We only need to update the power_supply on power role change if the port
is connected, because otherwise the online status should be the same for
both cases.
Cc: stable <stable@kernel.org>
Fixes: 7616f006db ("usb: typec: ucsi: Update power_supply on power role change")
Signed-off-by: Myrrh Periwinkle <myrrhperiwinkle@qtmlabs.xyz>
Reported-and-tested-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Link: https://patch.msgid.link/20260519-ucsi-fix-2-v1-2-6f1239535187@qtmlabs.xyz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
UGREEN USB-C Multifunction Adapter Model CM512 (AKA "Revodok 107")
exposes two SVIDs: 0xff01 (DP Alt Mode) and 0x1d5c. The DISCOVER_MODES
step succeeds for 0xff01 and gets a NAK for 0x1d5c. Currently this
results in DP Alt Mode not being registered either, since the modes
are only registered once all of them have been discovered. The NAK
results in the processing being stopped and thus no Alt modes being
registered.
Improve the situation by handling the NAK gracefully and continue
processing the other modes.
Before this change, the TCPM log ends like this:
(more log entries before this)
[ 5.028287] AMS DISCOVER_SVIDS finished
[ 5.028291] cc:=4
[ 5.040040] SVID 1: 0xff01
[ 5.040054] SVID 2: 0x1d5c
[ 5.040082] AMS DISCOVER_MODES start
[ 5.040096] PD TX, header: 0x1b6f
[ 5.050946] PD TX complete, status: 0
[ 5.059609] PD RX, header: 0x264f [1]
[ 5.059626] Rx VDM cmd 0xff018043 type 1 cmd 3 len 2
[ 5.059640] AMS DISCOVER_MODES finished
[ 5.059644] cc:=4
[ 5.069994] Alternate mode 0: SVID 0xff01, VDO 1: 0x000c0045
[ 5.070029] AMS DISCOVER_MODES start
[ 5.070043] PD TX, header: 0x1d6f
[ 5.081139] PD TX complete, status: 0
[ 5.087498] PD RX, header: 0x184f [1]
[ 5.087515] Rx VDM cmd 0x1d5c8083 type 2 cmd 3 len 1
[ 5.087529] AMS DISCOVER_MODES finished
[ 5.087534] cc:=4
(no further log entries after this point)
After this patch the TCPM log looks exactly the same, but then
continues like this:
[ 5.100222] Skip SVID 0x1d5c (failed to discover mode)
[ 5.101699] AMS DFP_TO_UFP_ENTER_MODE start
(log goes on as the system initializes DP AltMode)
Cc: stable <stable@kernel.org>
Fixes: 41d9d75344 ("usb: typec: tcpm: add discover svids and discover modes support for sop'")
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: RD Babiera <rdbabiera@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://patch.msgid.link/20260429-tcpm-discover-modes-nak-fix-v4-1-75945d0ed30f@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
According to the cdns3 datasheet, the EPRST (Endpoint Reset) command
causes the DMA engine to reposition its internal pointer to the next
Transfer Descriptor (TD) if it was already processing one.
This issue is consistently observed during the ADB identification
process on macOS hosts, where the host issues a Clear_Halt. Although
commit 4bf2dd6513 ("usb: cdns3: gadget: toggle cycle bit before reset
endpoint") attempted to avoid DMA advance by toggling the cycle bit,
trace logs show that on certain hosts like macOS, the DMA pointer
(EP_TRADDR) still shifts after EPRST:
cdns3_ctrl_req: Clear Endpoint Feature(Halt ep1out)
cdns3_doorbell_epx: ep1out, ep_trbaddr f9c04030 <-- Should be f9c04000
cdns3_gadget_giveback: ep1out: req: ... length: 16384/16384
As shown above, the DMA pointer jumped to the next TD, causing
the controller to skip the initial TRBs of the request. This leads to
data misalignment and ADB protocol hangs on macOS.
Fix this by manually restoring the EP_TRADDR register to the starting
physical address of the current request after the EPRST operation is
complete.
Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
Cc: stable <stable@kernel.org>
Cc: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Yongchao Wu <yongchao.wu@autochips.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://patch.msgid.link/20260513160012.2547894-1-yongchao.wu@autochips.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
While being less compact, using named initializers allows to more easily
see which members of the structs are assigned which value without having
to lookup the declaration of the struct. And it's also more robust
against changes to the struct definition.
This patch doesn't modify the compiled array, only its representation in
source form benefits. The former was confirmed with x86 and arm64
builds.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Vladimir Zapolskiy <vz@kernel.org>
Link: https://patch.msgid.link/20260519161300.1598095-2-u.kleine-koenig@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
While being less compact, using named initializers allows to more easily
see which members of the structs are assigned which value without having
to lookup the declaration of the struct. And it's also more robust
against changes to the struct definition.
While touching all these arrays, unify usage of whitespace in the list
terminator.
This patch doesn't modify the compiled arrays, only their representation
in source form benefits. The former was confirmed with x86 and arm64
builds.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Richard Leitner <richard.leitner@linux.dev>
Link: https://patch.msgid.link/20260518135536.781168-2-u.kleine-koenig@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
While being less compact, using named initializers allows to more easily
see which members of the structs are assigned which value without having
to lookup the declaration of the struct. And it's also more robust
against changes to the struct definition.
The mentioned robustness is relevant for a planned change to struct
i2c_device_id that replaces .driver_data by an anonymous union.
While touching all these arrays, unify usage of whitespace in the list
terminator.
This patch doesn't modify the compiled arrays, only their representation
in source form benefits. The former was confirmed with x86 and arm64
builds.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/20260518110142.637215-2-u.kleine-koenig@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
AMD Promontory 21 (PROM21) xHCI PCI functions use the common xhci-pci
core for USB operation, but also expose controller-specific sensor data.
Add a small PROM21 PCI glue driver for AMD 1022:43fc and 1022:43fd
controllers.
The glue delegates USB host operation to the common xhci-pci core and
publishes a "hwmon" auxiliary device with parent-provided MMIO data.
Auxiliary device creation failure is logged but does not fail the xHCI
probe.
Make the PROM21 glue a hidden Kconfig tristate driven by the user-visible
SENSORS_PROM21_XHCI option. If sensor support is disabled, generic
xhci-pci binds PROM21 controllers normally. If sensor support is enabled,
the glue follows USB_XHCI_PCI.
This keeps the auxiliary device available for a modular sensor driver while
avoiding a built-in xhci-pci core handing PROM21 controllers to a glue
driver that is only available as a module during initramfs.
Assisted-by: Codex:gpt-5.5
Signed-off-by: Jihong Min <hurryman2212@gmail.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Tested-by: Yaroslav Isakov <yaroslav.isakov@gmail.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://patch.msgid.link/20260519000732.2334711-2-hurryman2212@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert dev_info() to dev_dbg().
Per 'Documentation/process/coding-style.rst':
13) Printing kernel messages
... When drivers are working properly they are quiet,
so prefer to use dev_dbg/pr_debug unless something is wrong.
While in there, correct the verb form and add 'with' for clarity.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/all/2026051628-squatter-stature-c0e0@gregkh/
Signed-off-by: Mauricio Faria de Oliveira <mfo@igalia.com>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Link: https://patch.msgid.link/20260520-ueagle-atm-cleanup-v1-1-010c8bc7b214@igalia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use FIELD_MODIFY() to remove open-coded bit manipulation.
No functional change intended.
Signed-off-by: Hans Zhang <18255117159@163.com>
Link: https://patch.msgid.link/20260430163919.47372-7-18255117159@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use FIELD_MODIFY() to remove open-coded bit manipulation.
No functional change intended.
Signed-off-by: Hans Zhang <18255117159@163.com>
Link: https://patch.msgid.link/20260430163919.47372-6-18255117159@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use FIELD_MODIFY() to remove open-coded bit manipulation.
No functional change intended.
Signed-off-by: Hans Zhang <18255117159@163.com>
Link: https://patch.msgid.link/20260430163919.47372-5-18255117159@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use FIELD_MODIFY() to remove open-coded bit manipulation.
No functional change intended.
Signed-off-by: Hans Zhang <18255117159@163.com>
Link: https://patch.msgid.link/20260430163919.47372-4-18255117159@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use FIELD_MODIFY() to remove open-coded bit manipulation.
No functional change intended.
Signed-off-by: Hans Zhang <18255117159@163.com>
Link: https://patch.msgid.link/20260430163919.47372-3-18255117159@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use FIELD_MODIFY() to remove open-coded bit manipulation.
No functional change intended.
Signed-off-by: Hans Zhang <18255117159@163.com>
Link: https://patch.msgid.link/20260430163919.47372-2-18255117159@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kernel-doc comment for dwc3_alloc_event_buffers states that the
function "Allocates @num event buffers", but the function does not have
a @num parameter and only allocates a single event buffer.
Remove the misleading "@num" reference from the brief description to
accurately reflect the function's behavior.
Signed-off-by: Shuping Bu <bushuping007@163.com>
Link: https://patch.msgid.link/20260520055023.2415635-1-bushuping007@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If devm_drm_dp_hpd_bridge_add() fails during fusb302_probe(), the original
code returned directly without cleaning up the resources.
Move bridge registration before the IRQ is requested and route bridge
registration failures through the existing TCPM unregister and fwnode
cleanup path.
Fixes: 5d79c52540 ("usb: typec: fusb302: add DRM DP HPD bridge support")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://patch.msgid.link/20260428-fusb-v2-1-aa3b5942cabb@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the missing sanity check on the size of interrupt-in transfers to
avoid parsing stale or uninitialised slab data (and leaking it to user
space).
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The driver overrides the maximum transfer size for a specific device
which only accepts 16 byte packets for its 32 byte bulk-out endpoint.
Make sure to never increase the maximum transfer size to prevent slab
corruption should a malicious device report a smaller endpoint max
packet size than expected.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Add the missing sanity check on the size of usa49wg indat transfers to
avoid parsing stale or uninitialised slab data.
Fixes: 0ca1268e10 ("USB Serial Keyspan: add support for USA-49WG & USA-28XG")
Cc: stable@vger.kernel.org # 2.6.23
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
The Belkin interrupt callback treats interrupt data as a four-byte
status report and reads LSR/MSR fields at offsets 2 and 3. The
interrupt-in buffer length is derived from endpoint wMaxPacketSize, and
short interrupt transfers may complete successfully with a smaller
actual_length.
Check the completed interrupt packet length before parsing status
fields so short interrupt endpoints and short successful packets are
ignored instead of causing out-of-bounds or stale status-byte reads.
KASAN report as below:
BUG: KASAN: slab-out-of-bounds in belkin_sa_read_int_callback()
Read of size 1
Call trace:
belkin_sa_read_int_callback() (drivers/usb/serial/belkin_sa.c:202)
__usb_hcd_giveback_urb() (drivers/usb/core/hcd.c:1630)
dummy_timer() (?:?)
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Assisted-by: Codex:gpt-5.5
Signed-off-by: Zhang Cen <rollkingzzc@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
The connector number in a UCSI CCI notification is a 7-bit field
supplied by the PPM. ucsi_connector_change() uses it to index the
ucsi->connector[] array without checking it against the number of
connectors the PPM reported at init time, so a buggy or malicious PPM
(EC firmware, or an I2C-attached UCSI controller on the ccg / stm32g0 /
glink transports) can drive schedule_work() on memory past the end of
the array.
Reject connector numbers that are zero or exceed cap.num_connectors
before dereferencing the array.
Assisted-by: gkh_clanker_t1000
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Benson Leung <bleung@chromium.org>
Cc: Jameson Thies <jthies@google.com>
Cc: Nathan Rebello <nathan.c.rebello@gmail.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: Pooja Katiyar <pooja.katiyar@intel.com>
Cc: Hsin-Te Yuan <yuanhsinte@chromium.org>
Cc: Abel Vesa <abelvesa@kernel.org>
Cc: stable <stable@kernel.org>
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://patch.msgid.link/2026051351-truck-steadfast-df48@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ucsi_displayport_vdm() handles a DP_CMD_CONFIGURE by copying the first
payload VDO from data[], but unlike the equivalent handler in
altmodes/displayport.c it does not check that count covers a VDO beyond
the header. A header-only Configure VDM (count == 1) would read one u32
past the caller's array.
In the normal UCSI path the caller controls count, so this is hardening
for non-standard delivery paths. NAK and bail when no configuration VDO
is present, matching the generic DP altmode driver's existing guard.
Assisted-by: gkh_clanker_t1000
Cc: Pooja Katiyar <pooja.katiyar@intel.com>
Cc: Johan Hovold <johan@kernel.org>
Cc: stable <stable@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/2026051351-vividly-flattered-eb3d@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
svdm_consume_modes() checks pmdata->altmodes against the array size once
before the loop over the count, but forgot to check the bound at every
point in the loop.
In the well-behaved SVDM discovery flow this is harmless because each of
at most SVID_DISCOVERY_MAX SVIDs contributes at most MODE_DISCOVERY_MAX
modes, exactly filling altmode_desc[ALTMODE_DISCOVERY_MAX]. But the
CMDT_RSP_ACK handler in tcpm_pd_svdm() does not correlate an incoming
ACK with any request the port actually sent. Once port->partner is set,
an unsolicited Discover Modes ACK is consumed unconditionally. A broken
or malicious port partner can therefore drive altmodes to
ALTMODE_DISCOVERY_MAX - 1 via the normal flow, and then send one extra
Discover Modes ACK with seven VDOs. Because the pre-loop check passes,
the loop could then writes up to five entries past altmode_desc[]. For
mode_data_prime the next field in struct tcpm_port is the
partner_altmode[] pointer array, which then receives partner-chosen
SVID/VDO bytes.
Move the bound check inside the loop so the array can never be indexed
past ALTMODE_DISCOVERY_MAX regardless of how many VDOs the partner
supplies or how the function was reached.
Assisted-by: gkh_clanker_t1000
Cc: Badhri Jagan Sridharan <badhri@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/2026051351-reshuffle-skillful-90af@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Properly validate the count passed from a device when calling
svdm_consume_identity() or svdm_consume_identity_sop_prime() as the
device-controlled value could index off of the static arrays, which
could leak data.
Assisted-by: gkh_clanker_t1000
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: stable <stable@kernel.org>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://patch.msgid.link/2026051350-plated-salute-0efe@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A broken/malicious port can transmit a CRC-valid frame whose header
advertises up to seven data objects but whose body carries fewer than
that. Check for this, and rightfully reject the message, instead of
reading from uninitialized stack memory.
Assisted-by: gkh_clanker_t1000
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: "André Draszik" <andre.draszik@linaro.org>
Cc: Badhri Jagan Sridharan <badhri@google.com>
Cc: Amit Sunil Dhamne <amitsd@google.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/2026051350-sitter-canopener-9045@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A broken/malicious device can send the incorrect count for a status
update VDO, which will cause the kernel to read uninitialized stack data
and send it off elsewhere.
Fix this up by correctly verifying the count for the update object.
Assisted-by: gkh_clanker_t1000
Cc: stable <stable@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/2026051350-reacquire-sculpture-4244@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
wcove_read_rx_buffer() copies the PD RX FIFO into the caller's
struct pd_message with
for (i = 0; i < USBC_RXINFO_RXBYTES(info); i++)
regmap_read(wcove->regmap, USBC_RX_DATA + i, msg + i);
which has two problems:
USBC_RXINFO_RXBYTES() is a 5-bit field (max 31) while struct pd_message
is 30 bytes (__le16 header + __le32 payload[PD_MAX_PAYLOAD], packed).
The byte count latched in RXINFO is the number of bytes the port partner
put on the wire, so a malicious partner that transmits a 31-byte frame
can drive the loop one byte past the destination if the WCOVE BMC
receiver does not enforce the PD object-count limit in hardware. The
existing FIXME flagged this as unverified.
Independently, regmap_read() takes an unsigned int * and stores a full
unsigned int at the destination. Passing the byte pointer msg + i means
each iteration writes four bytes; the high three are zero (val_bits is
8) and are normally overwritten by the next iteration, but the final
iteration's high bytes are not. With RXBYTES == 30 the i == 29 iteration
already writes three zero bytes past msg, which sits on the IRQ thread's
stack in wcove_typec_irq().
Clamp the loop to sizeof(struct pd_message) and read each register into
a local before storing only its low byte, so the copy can never exceed
the destination regardless of what RXINFO reports.
Assisted-by: gkh_clanker_t1000
Cc: stable <stable@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/2026051347-clustered-deflected-9543@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Core usually prints endpoint addresses with 0x%X format.
Change this code to use it too, instead of just %d.
Particularly for IN, 0x83 seems more readable than 131.
While at that, fix checkpatch warnings about multi-line
quoted strings, as well as missing or doubled whitespace
in those strings.
Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Link: https://patch.msgid.link/20260518073258.6532bdd5.michal.pecio@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tao Xue found that some common devices violate USB 3.x section 9.6.7
by reporting wBytesPerInterval lower than the size of packets they
actually send. I confirmed that AX88179 may set it to 0 and RTL8153
CDC configuration sets it to 8 but sends both 8 and 16 byte packets:
S Ii:11:007:3 -115:128 16 <
C Ii:11:007:3 0:128 8 = a1000000 01000000
S Ii:11:007:3 -115:128 16 <
C Ii:11:007:3 0:128 16 = a12a0000 01000800 00000000 00000000
Most xHCI host controllers neglect interrupt bandwidth reservations
and let such devices exceed theirs, some fail the URB with EOVERFLOW.
Assume that wBytesPerInterval lower than wMaxPacketSize is bogus and
increase it to the worst case maximum on interrupt IN endpoints. This
solves xHCI problems and appears to have no other effect. Interrupt
transfers are not limited to one interval and drivers submit URBs of
class defined size without looking at wBytesPerInterval. Any multi-
interval transfer is considered terminated by a packet shorter than
wMaxPacketSize regardless of wBytesPerInterval - see USB3 8.10.3.
Stay in spec on OUT endpoints and isochronous. No buggy devices are
known and we don't want to risk sending more data than the device
is prepared to handle or confusing isoc drivers regarding altsetting
capacities guaranteed by the device itself. And don't complain when
wMaxPacketSize <= wBytesPerInterval < wMaxPacketSize * (bMaxBurst+1)
because enabling this seems to be the exact goal of the spec.
Reported-and-tested-by: Tao Xue <xuetao09@huawei.com>
Closes: https://lore.kernel.org/linux-usb/20260402021400.28853-1-xuetao09@huawei.com/
Cc: stable@vger.kernel.org
Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Link: https://patch.msgid.link/20260518073207.5b7d26e7.michal.pecio@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is no good reason to have wBytesPerInterval < wMaxPacketSize -
either one is too low or the other too high, and we may want to warn
about such descriptors. Start with cleaning up our own root hubs.
USB 3.2 section 10.15.1 sets wMaxPacketSize and wBytesPerInterval of
SuperSpeed hub status endpoints at 2 bytes, so reduce wMaxPacketSize
from its former value of 4, which was derived from USB 2.0 spec and
the kernel's USB_MAXCHILDREN limit. They don't apply because USB 3.2
10.15.2.1 specifies SuperSpeed hubs to have up to 15 ports.
Suggested-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Link: https://patch.msgid.link/20260518073121.7bc1da0f.michal.pecio@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
do_flash() locates the first .cyacd record with
p = strnchr(fw->data, fw->size, ':');
while (p < eof) {
s = strnchr(p + 1, eof - p - 1, ':');
...
}
If the firmware image contains no ':' byte, strnchr() returns NULL.
NULL compares less than the valid kernel pointer eof, so the loop body
runs and strnchr() is called with p + 1 == (void *)1 and a length of
roughly (unsigned long)eof, causing a wonderful crash.
The not_signed_fw fallthrough earlier in do_flash() and the chip-state
branches in ccg_fw_update_needed() allow an unsigned blob to reach this
loop, so a root user who can place a crafted file under /lib/firmware
and write the do_flash sysfs attribute can trigger the oops.
Bail out with -EINVAL when the initial strnchr() returns NULL.
Assisted-by: gkh_clanker_t1000
Cc: stable <stable@kernel.org>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/2026051405-posture-shrill-7884@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The WebUSB GET_URL handler in composite_setup() narrows
landing_page_length to fit the host-supplied wLength using
landing_page_length = w_length
- WEBUSB_URL_DESCRIPTOR_HEADER_LENGTH + landing_page_offset;
If wLength is smaller than WEBUSB_URL_DESCRIPTOR_HEADER_LENGTH the
unsigned subtraction wraps, and the subsequent
memcpy(url_descriptor->URL,
cdev->landing_page + landing_page_offset,
landing_page_length - landing_page_offset);
ends up copying close to UINT_MAX bytes from cdev->landing_page into
cdev->req->buf. KASAN reports a slab-out-of-bounds in composite_setup
on the kmalloc-2k gadget_info allocation, and FORTIFY_SOURCE traps the
memcpy as a 4294967293-byte field-spanning write into
url_descriptor->URL (size 252).
A USB host can reach this from a single SETUP packet against any
gadget that has webusb/use=1 and a landingPage configured.
Handle the small-wLength case before the math: when the host requested
fewer bytes than the URL descriptor header, only the header is
meaningful and no URL bytes need to be copied. Setting
landing_page_length to landing_page_offset makes the existing memcpy a
no-op and leaves the descriptor returned to the host unchanged for all
larger wLength values.
Fixes: 93c473948c ("usb: gadget: add WebUSB landing page support")
Cc: stable <stable@kernel.org>
Signed-off-by: Jeremy Erazo <mendozayt13@gmail.com>
Link: https://patch.msgid.link/20260512160530.352318-1-mendozayt13@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Set the error code on these two error paths. The existing code returns
success.
Fixes: 77ed2f4538 ("usb: typec: tipd: Use read_power_status function in probe")
Fixes: 04041fd7d6 ("usb: typec: tipd: Read data status in probe and cache its value")
Cc: stable <stable@kernel.org>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/agL9o7wUK1dOVBTy@stanley.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The termios definitions are provided by the termios.h header file which
is included by tty.h so drop the redundant asm/termbits.h include
directive.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Add the missing atomic.h include to the two driver that use it but did
not include it directly.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
This driver no longer uses anything from atomic.h so drop the unused
include directive.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
These drivers (and usb-serial.c) no longer use anything from
moduleparam.h so drop the unnecessary include directives.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
These drivers (and usb-serial.c) no longer use anything from uaccess.h
directly so drop the unnecessary include directives.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Add the missing uaccess.h include, which is needed since TIOCSRS485
support was added, instead of relying on the header being included
indirectly.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
These drivers (and usb-serial.c) no longer use anything from tty_flip.h
directly so drop the unnecessary include directives.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
USB serial drivers do not use anything from tty_driver.h directly (only
core does) so drop the unnecessary include directives.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
In preparation for adding support for 3, 5, 6 and 7 port devices, replace
the current one-bit-per-type encoding of the number of ports with a more
compact four bit encoding (2..16 ports or undefined).
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'v7.1-rc3' into usb-next
We need the USB fixes in here as well to test and work off of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are some new modem device ids.
This one has been in linux-next with no reported issues.
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Merge tag 'usb-serial-7.1-rc3' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB serial device ids for 7.1-rc3
Here are some new modem device ids.
This one has been in linux-next with no reported issues.
* tag 'usb-serial-7.1-rc3' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: option: add Telit Cinterion LE910Cx compositions
None of the remaining boards put useful data into the platform_data
structures, so effectively this only works with DT based probing.
Remove all code that references this data, to stop using the legacy
gpiolib interfaces. The pxa27x version already supports gpio
descriptors, while the pxa25x version now does it the same way.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260427143300.2887692-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Various names for Qualcomm as a company are used in user-visible config
options: QCOM, Qualcomm and Qualcomm Technologies. Switch to unified
"Qualcomm" so it will be easier for users to identify the options when
for example running menuconfig.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260427070044.17974-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A flexible array member can be used to combine allocations and simplify
handling slightly.
Add __counted_by for extra runtime analysis.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260425014201.439251-1-rosenp@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When there's nothing going through the retimer, there's no reason to
keep it online. Put it in reset when possible to save power.
Also, remove the register cache-compare optimization as it makes little
sense now that the chip resets during almost all transitions and
tracking the validity of that cache becomes a headache.
Suggested-by: Jack Pham <jack.pham@oss.qualcomm.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: Anthony Ruhier <aruhier@mailbox.org>
Link: https://patch.msgid.link/20260420-topic-ps883x_unused_reset-v1-1-7aabf7004d2a@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Just like in a previous problem in this driver, usblp_ctrl_msg() will
collapse the usb_control_msg() return value to 0/-errno, discarding the
actual number of bytes transferred.
Ideally that short command should be detected and error out, but many
printers are known to send "incorrect" responses back so we can't just
do that.
statusbuf is kmalloc(8) at probe time and never filled before the first
LPGETSTATUS ioctl.
usblp_read_status() requests 1 byte. If a malicious printer responds
with zero bytes, *statusbuf is one byte of stale kmalloc heap,
sign-extended into the local int status, which the LPGETSTATUS path then
copy_to_user()s directly to the ioctl caller.
Fix this all by just zapping out the memory buffer when allocated at
probe time. If a later call does a short read, the data will be
identical to what the device sent it the last time, so there is no
"leak" of information happening.
Cc: Pete Zaitcev <zaitcev@redhat.com>
Assisted-by: gkh_clanker_t1000
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/2026042011-shredder-savage-48c6@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usblp_ctrl_msg() collapses the usb_control_msg() return value to
0/-errno, discarding the actual number of bytes transferred. A broken
printer can complete the GET_DEVICE_ID control transfer short and the
driver has no way to know.
usblp_cache_device_id_string() reads the 2-byte big-endian length prefix
from the response and trusts it (clamped only to the buffer bounds).
The buffer is kmalloc(1024) at probe time. A device that sends exactly
two bytes (e.g. 0x03 0xFF, claiming a 1023-byte ID) leaves
device_id_string[2..1022] holding stale kmalloc heap.
That stale data is then exposed:
- via the ieee1284_id sysfs attribute (sprintf("%s", buf+2), truncated
at the first NUL in the stale heap), and
- via the IOCNR_GET_DEVICE_ID ioctl, which copy_to_user()s the full
claimed length regardless of NULs, up to 1021 bytes of uninitialized
heap, with the leak size chosen by the device.
Fix this up by just zapping the buffer with zeros before each request
sent to the device.
Cc: Pete Zaitcev <zaitcev@redhat.com>
Assisted-by: gkh_clanker_t1000
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/2026042002-unicorn-greedily-3c63@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Linux Version Code is currently written to the GUID register before
PHY initialization. Certain PHY implementations (such as Synopsys eUSB
PHY performing link_sw_reset) clear the GUID register to its default
value during initialization, causing the kernel version information to
be lost.
Move the GUID register programming to occur after PHY initialization
completes to ensure the Linux version information persists.
Fixes: fa0ea13e9f ("usb: dwc3: core: write LINUX_VERSION_CODE to our GUID register")
Cc: stable <stable@kernel.org>
Reported-by: Pritam Manohar Sutar <pritam.sutar@samsung.com>
Signed-off-by: Selvarasu Ganesan <selvarasu.g@samsung.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260417063314.2359-1-selvarasu.g@samsung.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The port in debug accessory mode can be either a source or sink. The
previous tcpm_port_is_debug() function only checked for source port.
Commit 8db73e6a42 ("usb: typec: tcpm: allow sink (ufp) to toggle into
accessory mode debug") changed the detection logic to support both roles,
but left some logic in _tcpm_cc_change() unchanged, This causes the state
machine to transition to an incorrect state when operating as a sink in
debug accessory mode. Log as below:
[ 978.637541] CC1: 0 -> 5, CC2: 0 -> 5 [state TOGGLING, polarity 0, connected]
[ 978.637567] state change TOGGLING -> SRC_ATTACH_WAIT [rev1 NONE_AMS]
[ 978.637596] pending state change SRC_ATTACH_WAIT -> DEBUG_ACC_ATTACHED @ 180 ms [rev1 NONE_AMS]
[ 978.647098] CC1: 5 -> 0, CC2: 5 -> 5 [state SRC_ATTACH_WAIT, polarity 0, connected]
[ 978.647115] state change SRC_ATTACH_WAIT -> SRC_ATTACH_WAIT [rev1 NONE_AMS]
It should go to SNK_ATTACH_WAIT instead of SRC_ATTACH_WAIT state.
To fix this, add tcpm_port_is_debug_source() and tcpm_port_is_debug_sink()
helper to explicitly identify the power mode in debug accessory mode.
Update the state transition logic in _tcpm_cc_change() to ensure the state
machine transitions comply with Type-C specification. Also update the logic
in run_state_machine() to keep consistency.
Fixes: 8db73e6a42 ("usb: typec: tcpm: allow sink (ufp) to toggle into accessory mode debug")
Cc: stable <stable@kernel.org>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Amit Sunil Dhamne <amitsd@google.com>
Link: https://patch.msgid.link/20260424074009.2979266-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 01af542392 ("usb: ulpi: fix double free in
ulpi_register_interface() error path") removed kfree(ulpi) from
ulpi_register_interface() to fix a double-free when device_register()
fails.
But when ulpi_of_register() or ulpi_read_id() fail before
device_register() is called, the ulpi allocation is leaked.
Add kfree(ulpi) on both error paths to properly clean up the allocation.
Fixes: 01af542392 ("usb: ulpi: fix double free in ulpi_register_interface() error path")
Cc: stable <stable@kernel.org>
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260407-ulpi-v1-1-f3fafe53f7b2@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 65111084c6 ("USB: more omap_udc updates (dma and omap1710)")
added setting for DMA burst 4 mode. But I think this should be undone for
two reasons:
- It breaks DMA on 15xx boards - transfers just silently stall.
- On newer OMAP1 boards, like Nokia 770 (omap1710), there is no measurable
performance impact when testing TCP throughput with g_ether with large
15000 byte MTU size.
It's also worth noting that when the original change was made, the
OMAP_DMA_DATA_BURST_4 handling in arch/arm/plat-omap/dma.c was broken, and
actually resulted in the same as the OMAP_DMA_DATA_BURST_DIS i.e. burst
disabled. This was fixed not until a couple kernel releases later in an
unrelated commit 1a8bfa1eb9 ("[ARM] 3142/1: OMAP 2/5: Update files
common to omap1 and omap2").
So based on this it seems there was never really a very good reason to
enable this burst mode in omap_udc, so remove it now to allow 15xx DMA
to work again (it provides 2x throughput compared to PIO mode).
Fixes: 65111084c6 ("[PATCH] USB: more omap_udc updates (dma and omap1710)")
Cc: stable <stable@kernel.org>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Link: https://patch.msgid.link/ad06qHLclWHeSGnV@darkstar.musicnaut.iki.fi
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Expose Cadence USBSSP through the same platform path as USBSS, trim
Kconfig and Makefile: one core loadable object plus separate glue .ko
files.
Single cdns.ko bundles core, DRD, the generic "cdns,usb3" platform
driver in cdns3-plat.c, optional host.o, and optional gadget objects.
Use CONFIG_USB_CDNS3_GADGET as a bool to compile gadget support into
that module. Remove duplicate MODULE_* declarations from cdns3-plat.c
now that it links into the same module.
Kconfig: the generic platform driver is selected via CONFIG_USB_CDNS3.
Move CONFIG_USB_CDNSP_PCI beside CONFIG_USB_CDNS3_PCI_WRAP under
"Platform glue driver support". SoC glue entries (TI, i.MX, StarFive)
depend only on CONFIG_USB_CDNS3.
Tighten CONFIG_USB_CDNS_SUPPORT dependencies so the umbrella follows
host or gadget when either is built as a module. Match host and gadget
bools to the cdns.ko tristate with USB=USB_CDNS3 and USB_GADGET=USB_CDNS3
instead of comparing against USB_CDNS_SUPPORT.
Link host.o when CONFIG_USB_CDNS3_HOST is enabled and use that symbol in
host-export.h, removing the redundant CONFIG_USB_CDNS_HOST indirection.
Export cdns_core_init_role and reorganize the function cdns_init, and
controller version could be gotten before the gadget init function is
decided per controller.
Keep host_init / gadget_init callbacks in struct cdns, so core.c does
not need direct linkage to host or gadget objects. Refactor cdnsp-pci.c
into a thin PCI-to-platform wrapper.
drivers/usb/Makefile: descend into drivers/usb/cdns3/ only when
CONFIG_USB_CDNS_SUPPORT is enabled.
Assisted-by: Cursor:claude-4.6-opus
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peter Chen <peter.chen@cixtech.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260421023459.506145-3-peter.chen@cixtech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The device controller may update vbus status via usb_udc_vbus_handler(),
which tries to connect the gadget even though gadget_bind_driver() has
already called usb_udc_connect_control_locked(). This causes pullup() to
be called twice. Avoid this by checking if gadget->connected is true.
This also set gadget->connected as false in usb_gadget_activate() if it
became connected while it was being deactivated. Otherwise,
usb_gadget_connect_locked will return early and pullup() won't be called.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20260423095355.2673035-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Cadence CDNSP controller optionally supports eUSB2 (embedded USB2)
port. While this port type operates logically like high-speed USB 2.0,
it utilizes a different physical layer signaling.
This patch:
- Extends the port detection logic to recognize the eUSB2 protocol.
- Tracks the eUSB2 port offset in the cdnsp_device structure.
- Ensures that eUSB2 ports are correctly handled during Link State
transitions, specifically forcing L0 when LPM is capable, similar
to standard USB 2.0 ports.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://patch.msgid.link/20260420-eusb2v2_upstream-v2-1-9883645e2ede@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In C, bitfields are not necessarily safe to modify from multiple
threads without locking. Switch "of_node_reused" over to the "flags"
field so modifications are safe.
Cc: Johan Hovold <johan@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Acked-by: Manivannan Sadhasivam <mani@kernel.org> # PCI_PWRCTRL
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://patch.msgid.link/20260406162231.v5.8.I806b8636cd3724f6cd1f5e199318ab8694472d90@changeid
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Usual driver updates (ufs, lpfc, fnic, target, mpi3mr). The
substantive core changes are adding a 'serial' sysfs attribute and
getting sd to support > PAGE_SIZE sectors.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Usual driver updates (ufs, lpfc, fnic, target, mpi3mr).
The substantive core changes are adding a 'serial' sysfs attribute and
getting sd to support > PAGE_SIZE sectors"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (98 commits)
scsi: target: Don't validate ignored fields in PROUT PREEMPT
scsi: qla2xxx: Use nr_cpu_ids instead of NR_CPUS for qp_cpu_map allocation
scsi: ufs: core: Disable timestamp for Kioxia THGJFJT0E25BAIP
scsi: mpi3mr: Fix typo
scsi: sd: fix missing put_disk() when device_add(&disk_dev) fails
scsi: libsas: Delete unused to_dom_device() and to_dev_attr()
scsi: storvsc: Handle PERSISTENT_RESERVE_IN truncation for Hyper-V vFC
scsi: iscsi_tcp: Remove unneeded selections of CRYPTO and CRYPTO_MD5
scsi: lpfc: Update lpfc version to 15.0.0.0
scsi: lpfc: Add PCI ID support for LPe42100 series adapters
scsi: lpfc: Introduce 128G link speed selection and support
scsi: lpfc: Check ASIC_ID register to aid diagnostics during failed fw updates
scsi: lpfc: Update construction of SGL when XPSGL is enabled
scsi: lpfc: Remove deprecated PBDE feature
scsi: lpfc: Add REG_VFI mailbox cmd error handling
scsi: lpfc: Log MCQE contents for mbox commands with no context
scsi: lpfc: Select mailbox rq_create cmd version based on SLI4 if_type
scsi: lpfc: Break out of IRQ affinity assignment when mask reaches nr_cpu_ids
scsi: ufs: core: Make the header files self-contained
scsi: ufs: core: Remove an include directive from ufshcd-crypto.h
...
Here is the big set of USB and Thunderbolt changes for 7.1-rc1.
Lots of little things in here, nothing major, just constant
improvements, updates, and new features. Highlights are:
- new USB power supply driver support (will cause merge conflicts in
drivers/power/supply/Makefile, but it's a simple fix) These changes
did touch outside of drivers/usb/ but got acks from the relevant
mantainers for them.
- dts file updates and conversions
- string function conversions into "safer" ones
- new device quirks
- xhci driver updates
- usb gadget driver minor fixes
- typec driver additions and updates
- small number of thunderbolt driver changes
- dwc3 driver updates and additions of new hardware support
- other minor driver updates
All of these have been in the linux-next tree for a while with no
reported issues
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 7.1-rc1.
Lots of little things in here, nothing major, just constant
improvements, updates, and new features. Highlights are:
- new USB power supply driver support.
These changes did touch outside of drivers/usb/ but got acks from
the relevant mantainers for them.
- dts file updates and conversions
- string function conversions into "safer" ones
- new device quirks
- xhci driver updates
- usb gadget driver minor fixes
- typec driver additions and updates
- small number of thunderbolt driver changes
- dwc3 driver updates and additions of new hardware support
- other minor driver updates
All of these have been in the linux-next tree for a while with no
reported issues"
* tag 'usb-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (176 commits)
usb: dwc3: starfive: Add JHB100 USB 2.0 DRD controller
dt-bindings: usb: dwc3: add support for StarFive JHB100
dt-bindings: usb: atmel,at91sam9rl-udc: convert to DT schema
dt-bindings: usb: atmel,at91rm9200-udc: convert to DT schema
dt-bindings: usb: generic-ehci: fix schema structure and add at91sam9g45 constraints
dt-bindings: usb: generic-ohci: add AT91RM9200 OHCI binding support
arm: dts: at91: remove unused #address-cells/#size-cells from sam9x60 udc node
drivers/usb/host: Fix spelling error 'seperate' -> 'separate'
usbip: tools: add hint when no exported devices are found
USB: serial: iuu_phoenix: fix iuutool author name
usb: gadget: f_ncm: validate minimum block_len in ncm_unwrap_ntb()
usb: gadget: f_phonet: fix skb frags[] overflow in pn_rx_complete()
usb: gadget: f_hid: Add missing error code
usb: typec: cros_ec_ucsi: Load driver from OF and ACPI definitions
dt-bindings: chrome: Add cros-ec-ucsi compatibility to typec binding
USB: of: Simplify with scoped for each OF child loop
usbip: validate number_of_packets in usbip_pack_ret_submit()
usb: gadget: renesas_usb3: validate endpoint index in standard request handlers
usb: core: config: reverse the size check of the SSP isoc endpoint descriptor
usb: typec: ucsi: Set usb mode on partner change
...
JHB100 contains 2 dwc3 USB controllers and PHYs and working
as USB 2.0 speed. It can working in generic platform and
setting default properties.
Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Link: https://patch.msgid.link/20260410112500.90432-3-minda.chen@starfivetech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are the USB serial updates for 7.1-rc1, including:
- use strscpy() instead of strcpy()
- new modem device id
All have been in linux-next with no reported issues.
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Merge tag 'usb-serial-7.1-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB serial updates for 7.1-rc1
Here are the USB serial updates for 7.1-rc1, including:
- use strscpy() instead of strcpy()
- new modem device id
All have been in linux-next with no reported issues.
* tag 'usb-serial-7.1-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: iuu_phoenix: fix iuutool author name
USB: serial: option: add Telit Cinterion FN990A MBIM composition
USB: serial: ti_usb_3410_5052: use strscpy() instead of strcpy()
The original iuutool author is Juan Carlos Borrás - fix the spelling.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Johan Hovold <johan@kernel.org>
The block_len read from the host-supplied NTB header is checked against
ntb_max but has no lower bound. When block_len is smaller than
opts->ndp_size, the bounds check of:
ndp_index > (block_len - opts->ndp_size)
will underflow producing a huge unsigned value that ndp_index can never
exceed, defeating the check entirely.
The same underflow occurs in the datagram index checks against block_len
- opts->dpe_size. With those checks neutered, a malicious USB host can
choose ndp_index and datagram offsets that point past the actual
transfer, and the skb_put_data() copies adjacent kernel memory into the
network skb.
Fix this by rejecting block lengths that cannot hold at least the NTB
header plus one NDP. This will make block_len - opts->ndp_size and
block_len - opts->dpe_size both well-defined.
Commit 8d2b1a1ec9 ("CDC-NCM: avoid overflow in sanity checking") fixed
a related class of issues on the host side of NCM.
Fixes: 2b74b0a04d ("USB: gadget: f_ncm: add bounds checks to ncm_unwrap_ntb()")
Cc: stable <stable@kernel.org>
Assisted-by: gregkh_clanker_t1000
Link: https://patch.msgid.link/2026040753-baffle-handheld-624d@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A broken/bored/mean USB host can overflow the skb_shared_info->frags[]
array on a Linux gadget exposing a Phonet function by sending an
unbounded sequence of full-page OUT transfers.
pn_rx_complete() finalizes the skb only when req->actual < req->length,
where req->length is set to PAGE_SIZE by the gadget. If the host always
sends exactly PAGE_SIZE bytes per transfer, fp->rx.skb will never be
reset and each completion will add another fragment via
skb_add_rx_frag(). Once nr_frags exceeds MAX_SKB_FRAGS (default 17),
subsequent frag stores overwrite memory adjacent to the shinfo on the
heap.
Drop the skb and account a length error when the frag limit is reached,
matching the fix applied in t7xx by commit f0813bcd2d ("net: wwan:
t7xx: fix potential skb->frags overflow in RX path").
Cc: stable <stable@kernel.org>
Assisted-by: gregkh_clanker_t1000
Link: https://patch.msgid.link/2026040705-fruit-unloved-0701@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a USB/IP client receives a RET_SUBMIT response,
usbip_pack_ret_submit() unconditionally overwrites
urb->number_of_packets from the network PDU. This value is
subsequently used as the loop bound in usbip_recv_iso() and
usbip_pad_iso() to iterate over urb->iso_frame_desc[], a flexible
array whose size was fixed at URB allocation time based on the
*original* number_of_packets from the CMD_SUBMIT.
A malicious USB/IP server can set number_of_packets in the response
to a value larger than what was originally submitted, causing a heap
out-of-bounds write when usbip_recv_iso() writes to
urb->iso_frame_desc[i] beyond the allocated region.
KASAN confirmed this with kernel 7.0.0-rc5:
BUG: KASAN: slab-out-of-bounds in usbip_recv_iso+0x46a/0x640
Write of size 4 at addr ffff888106351d40 by task vhci_rx/69
The buggy address is located 0 bytes to the right of
allocated 320-byte region [ffff888106351c00, ffff888106351d40)
The server side (stub_rx.c) and gadget side (vudc_rx.c) already
validate number_of_packets in the CMD_SUBMIT path since commits
c6688ef9f2 ("usbip: fix stub_rx: harden CMD_SUBMIT path to handle
malicious input") and b78d830f00 ("usbip: fix vudc_rx: harden
CMD_SUBMIT path to handle malicious input"). The server side validates
against USBIP_MAX_ISO_PACKETS because no URB exists yet at that point.
On the client side we have the original URB, so we can use the tighter
bound: the response must not exceed the original number_of_packets.
This mirrors the existing validation of actual_length against
transfer_buffer_length in usbip_recv_xbuff(), which checks the
response value against the original allocation size.
Kelvin Mbogo's series ("usb: usbip: fix integer overflow in
usbip_recv_iso()", v2) hardens the receive-side functions themselves;
this patch complements that work by catching the bad value at its
source -- in usbip_pack_ret_submit() before the overwrite -- and
using the tighter per-URB allocation bound rather than the global
USBIP_MAX_ISO_PACKETS limit.
Fix this by checking rpdu->number_of_packets against
urb->number_of_packets in usbip_pack_ret_submit() before the
overwrite. On violation, clamp to zero so that usbip_recv_iso() and
usbip_pad_iso() safely return early.
Fixes: 1325f85fa4 ("staging: usbip: bugfix add number of packets for isochronous frames")
Cc: stable <stable@kernel.org>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Nathan Rebello <nathan.c.rebello@gmail.com>
Link: https://patch.msgid.link/20260402085259.234-1-nathan.c.rebello@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The GET_STATUS and SET/CLEAR_FEATURE handlers extract the endpoint
number from the host-supplied wIndex without any sort of validation.
Fix this up by validating the number of endpoints actually match up with
the number the device has before attempting to dereference a pointer
based on this math.
This is just like what was done in commit ee0d382feb ("usb: gadget:
aspeed_udc: validate endpoint index for ast udc") for the aspeed driver.
Fixes: 746bfe63bb ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Cc: stable <stable@kernel.org>
Assisted-by: gregkh_clanker_t1000
Link: https://patch.msgid.link/2026040647-sincerity-untidy-b104@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reverse the check of the size of the usb_ssp_isoc_ep_comp_descriptor
structure to be done before accessing the structure itself.
Functionally, this doesn't really do anything as the buffer is all
internal to the kernel, and reading off the end is just fine, but static
checking tools get picky when noticing that a potential read could be
made "outside" of an allocated buffer.
Not a bugfix, but a cleanup to keep tools from tripping over this
constantly and annoying me with their pointless reports.
Link: https://patch.msgid.link/2026040630-graded-postwar-760f@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently the partner usb_mode is only set in ucsi_register_partner().
If the partner enters USB4 operation after it is registered, this is not
reported to the typec class. The UCSI spec states that the Connector
Partner Changed bit can represent a Connector Partner Flags change. When
handling a UCSI partner change, check the partner flags for USB4
operation.
Signed-off-by: Jameson Thies <jthies@google.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://patch.msgid.link/20260402182438.867396-1-jthies@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Lenovo Yoga Book 9 14IAH10 (83KJ) has a composite USB device
(17EF:6161) that controls both touchscreens via a CDC ACM interface.
Interface 0 is a standard CDC ACM control interface, but interface 1
(the data interface) incorrectly declares vendor-specific class (0xFF)
instead of USB_CLASS_CDC_DATA. cdc-acm rejects the device at probe with
-EINVAL, leaving interface 0 unbound and EP 0x82 never polled.
With no consumer polling EP 0x82, the firmware's watchdog fires every
~20 seconds and resets the USB bus, producing a continuous disconnect/
reconnect loop that prevents the touchscreens from ever initialising.
Add two new quirk flags:
VENDOR_CLASS_DATA_IFACE: Bypasses the bInterfaceClass check in
acm_probe() that would otherwise reject the vendor-class data
interface with -EINVAL.
ALWAYS_POLL_CTRL: Submits the notification URB at probe() rather than
waiting for a TTY open. This keeps EP 0x82 polled at all times,
permanently suppressing the firmware watchdog. The URB is resubmitted
after port_shutdown() and on system resume. SET_CONTROL_LINE_STATE
(DTR|RTS) is sent at probe and after port_shutdown() to complete
firmware handshake.
Note: the firmware performs exactly 4 USB connect/disconnect cycles
(~19 s each) on every cold boot before stabilising. This is a fixed
firmware property; touch is available ~75-80 s after power-on.
Signed-off-by: Dave Carey <carvsdriver@gmail.com>
Cc: stable <stable@kernel.org>
Tested-by: Dave Carey <carvsdriver@gmail.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260402182950.389016-1-carvsdriver@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Expands range of matched bcdDevice values for the VL817 quirk entry.
This is based on experience with Axagon EE35-GTR rev1 3.5" HDD
enclosure, which reports its bcdDevice as 0x0843, but presumably other
vendors using this IC in their products may set it to any other value.
Signed-off-by: Daniel Brát <danek.brat@gmail.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260402172433.5227-1-danek.brat@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usb role switch will update ID and VBUS states at the same time, and
vbus will not drop when execute data role swap in Type-C usecase. So lets
not wait vbus drop in usb role switch case too.
Fixes: e1b5d2bed6 ("usb: chipidea: core: handle usb role switch in a common way")
Cc: stable@vger.kernel.org
Acked-by: Peter Chen <peter.chen@kernel.org>
Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260402071457.2516021-3-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For USB role switch-triggered IRQ, ID and VBUS change come together, for
example when switching from host to device mode. ID indicate a role switch
and VBUS is required to determine whether the device controller can start
operating. Currently, ci_irq_handler() handles only a single event per
invocation. This can cause an issue where switching to device mode results
in the device controller not working at all. Allowing ci_irq_handler() to
handle both ID and VBUS change in one call resolves this issue.
Meanwhile, this change also affects the VBUS event handling logic.
Previously, if an ID event indicated host mode the VBUS IRQ will be
ignored as the device disable BSE when stop() is called. With the new
behavior, if ID and VBUS IRQ occur together and the target mode is host,
the VBUS event is queued and ci_handle_vbus_change() will call
usb_gadget_vbus_connect(), after which USBMODE is switched to device mode,
causing host mode to stop working. To prevent this, an additional check is
added to skip handling VBUS event when current role is not device mode.
Suggested-by: Peter Chen <peter.chen@kernel.org>
Fixes: e1b5d2bed6 ("usb: chipidea: core: handle usb role switch in a common way")
Cc: stable@vger.kernel.org
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260402071457.2516021-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Notifications can arrive before ucsi_init() has populated
ucsi->cap.num_connectors via GET_CAPABILITY. At that point
num_connectors is still 0, causing all valid connector numbers to be
incorrectly rejected as bogus.
Skip the bounds check when num_connectors is 0 (not yet initialized).
Pre-init notifications are already handled safely by the early-event
guard in ucsi_connector_change().
Reported-by: Takashi Iwai <tiwai@suse.de>
Fixes: d2d8c17ac0 ("usb: typec: ucsi: validate connector number in ucsi_notify_common()")
Cc: stable@vger.kernel.org
Signed-off-by: Nathan Rebello <nathan.c.rebello@gmail.com>
Tested-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260407063958.863-1-nathan.c.rebello@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'v7.0-rc7' into usb-next
We need the USB fixes in here to build on and for testing
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 6076388ca1.
There were some build issues as reported by Arnd, so revert this for
now.
Cc: Peter Chen <peter.chen@cixtech.com>
Cc: Pawel Laszczak <pawell@cadence.com>
Reported-by: Arnd Bergmann <arnd@kernel.org>
Link: https://lore.kernel.org/r/ac+LEWMCQpLSnfoD@nchen-desktop
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 7b7f2dd913.
There was some problems with an earlier cdns3 change, so this one needs
to be backed out as well.
Cc: Pawel Laszczak <pawell@cadence.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Reported-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/ac+LEWMCQpLSnfoD@nchen-desktop
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xHCI hardware maintains its endpoint state between add_endpoint()
and drop_endpoint() calls followed by successful check_bandwidth().
So does the driver.
Core may call endpoint_disable() during xHCI endpoint life, so don't
clear host_ep->hcpriv then, because this breaks endpoint_reset().
If a driver calls usb_set_interface(), submits URBs which make host
sequence state non-zero and calls usb_clear_halt(), the device clears
its sequence state but xhci_endpoint_reset() bails out. The next URB
malfunctions: USB2 loses one packet, USB3 gets Transaction Error or
may not complete at all on some (buggy?) HCs from ASMedia and AMD.
This is triggered by uvcvideo on bulk video devices.
The code was copied from ehci_endpoint_disable() but it isn't needed
here - hcpriv should only be NULL on emulated root hub endpoints.
It might prevent resetting and inadvertently enabling a disabled and
dropped endpoint, but core shouldn't try to reset dropped endpoints.
Document xhci requirements regarding hcpriv. They are currently met.
Fixes: 18b74067ac ("xhci: Fix use-after-free regression in xhci clear hub TT implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-26-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Function xhci_setup_port_arrays() limits the number of roothub ports
for both USB 2 and 3, this causes code repetition.
Solve this by moving roothub port limits validation to
xhci_create_rhub_port_array().
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-24-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Resume roothubs without checking 'retval' value, as it is always '0'.
Due to changes made in commit 79989bd4ab ("xhci: always resume roothubs
if xHC was reset during resume") the check is redundant.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-23-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Improve readability of xhci_hub_report_usb3_link_state().
Comments are shortened and clarified, and the code now makes it explicit
when the Port Link State (PLS) value is modified versus when other status
bits are updated.
No functional changes.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-22-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A previous patch renamed the temporary variable holding the value read
from the PORTSC register from 'temp' to 'portsc'. This patch follows up
by updating the parameter names of all helper functions called from
xhci_hub_control() that receive a PORTSC value, as well as the functions
they call.
Function changed:
xhci_get_port_status()
L xhci_get_usb3_port_status()
L xhci_hub_report_usb3_link_state()
L xhci_del_comp_mod_timer()
xhci_get_ext_port_status()
xhci_port_state_to_neutral()
xhci_clear_port_change_bit()
xhci_port_speed()
The reason for the rename is to differentiate between port
status/change bit to be written to PORTSC and replying to hub-class
USB requests. Each of them use their specific macros.
Use "portsc" name for PORTSC values and "status" for values intended
for replying to hub-class USB request.
A dedicated structure for USB hub port status responses
('struct usb_port_status' from ch11.h) exists and will be integrated in
a later patch.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-21-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The variable 'temp' is used multiple times throughout xhci_hub_control()
for holding only PORTSC register values.
As a follow-up to introducing a dedicated variable for PORTPMSC, rename
all remaining 'temp' to 'portsc'. This improves readability and clarifies
what is being modified.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-20-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The code handling U1/U2 timeout updates reads and modifies the PORTPMSC
register using the generic 'temp' variable, which is also used for
PORTSC. This makes the code hard to read and increases the risk of mixing
up register contents.
Introduce a dedicated 'portpmsc' variable for PORTPMSC accesses and use
it in both U1 and U2 timeout handlers. This makes the intent clearer and
keeps register operations logically separated.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-19-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The xhci driver uses two different sources for Port Link State (PLS):
1. The PLS field in the PORTSC register (bits 8:5).
2. The PLS value encoded in bits 15:8 of the USB request wIndex,
received by xhci_hub_control().
While both represent similar link states, they differ in a few details,
for example, xHCI's Resume State. Because of these differences, the xhci
driver defines its own set of PLS macros in xhci-port.h, which are intended
to be used when reading and writing PORTSC. The generic USB Chapter 11
macros in ch11.h should only be used when parsing or replying to hub-class
USB requests.
To avoid mixing these two representations and prevent incorrect state
reporting, replace all uses of Chapter 11 PLS macros with the xHCI
versions when interacting with the PORTSC register.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-18-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Several hub control requests encode a descriptor type in the upper byte
of 'wValue'. Clean this up by extracting the descriptor type into a local
variable and using it for all relevant requests.
Replace magic value (0x02) with the appropriate macro (HUB_EXT_PORT_STATUS)
This improves readability and makes the handling of 'wValue' consistent.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-17-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In Set Port Feature requests, the upper byte of 'wIndex' encodes
feature-specific parameters. The current code reads these upper bits in
an early pre-processing block, and then the same feature is handled again
later in the main switch statement. This results in duplicated condition
checks and makes the control flow harder to follow.
Move all feature-specific extraction of 'wIndex' upper bits into the
main SetPortFeature logic so that each feature is handled in exactly one
place. This reduces duplication, makes the handling clearer, and keeps
'wIndex' parsing local to the code that actually uses the values.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-16-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Several helper functions take a parameter named 'wIndex', but the
value they receive is not the raw USB request wIndex field. The only
function that actually processes the USB hub request parameter is
xhci_hub_control(), which extracts the relevant port number (and other
upper-byte fields) before passing them down.
To avoid confusion between the USB request parameter and the derived
0-based port index, rename all such function parameters from 'wIndex'
to 'portnum'. This improves readability and makes the call intentions
clearer.
When a function accept struct 'xhci_port' pointer, use its port number
instead.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-15-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The USB request parameter 'wIndex' is a 16-bit field whose meaning depends
on the request type. For hub port operations, only bits 7:0 encode the port
number (1..MaxPorts). Despite this, the current code extracts the port
number into 'portnum1' while also modifying and using 'wIndex' directly as
a 0-based port index. This dual use is both confusing and error-prone,
since 'wIndex' is not always a pure port number.
Clean this up by deriving a single 0-based 'portnum' from 'wIndex' and
using it throughout the function. The original 'wIndex' value is no longer
modified or treated as a port number. This also matches existing xhci code.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-14-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On resume from S4 (power loss after suspend/hibernation), the xHCI
driver previously freed, reallocated, and fully reinitialized all
data structures. Most of this is unnecessary because the data is
restored from a saved image; only the xHCI registers lose their values.
This patch optimizes S4 resume by performing only a host controller
reset, which includes:
* Freeing or clearing runtime-created data.
* Rewriting xHCI registers.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-13-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Improve debug output for suspend failures, particularly when the controller
handshake does not complete. This will become important as upcoming patches
significantly rework the resume path, making more detailed suspend-side
messages valuable for debugging.
Add an explicit check of the Save/Restore Error (SRE) flag after a
successful Save State (CSS) operation. The xHCI specification
(note in section 4.23.2) states:
"After a Save or Restore State operation completes, the
Save/Restore Error (SRE) flag in USBSTS should be checked to
ensure the operation completed successfully."
Currently, the SRE error is only observed and warning is printed.
This patch does not introduce deeper error handling, as the correct
response is unclear and changes to suspend behavior may risk regressions
once the resume path is updated.
Additionally, simplify and clean up the suspend USBSTS CSS/SSS
handling code, improving readability and quirk handling for AMD
SNPS xHC controllers that occasionally do not clear the SSS bit.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-12-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Separate allocation and initialization in the xHCI core:
* xhci_mem_init() now only handles memory allocation.
* xhci_init() now only handles initialization.
This split allows xhci_init() to be reused when resuming from S4
suspend-to-disk.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-11-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Initialize objects that exist for the lifetime of the driver only once,
rather than repeatedly. These objects do not require re-initialization
after events such as S4 (suspend-to-disk).
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-10-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move ring initialization from xhci_ring_alloc() to xhci_ring_init().
Call xhci_ring_init() after xhci_ring_alloc(); in the future,
it can also be used to re-initialize the ring during resume.
Additionally, remove xhci_dbg_trace() from xhci_mem_init(). The command
ring's first segment DMA address is now printed during the trace call in
xhci_ring_init().
This refactoring lays also the groundwork for eventually replacing:
* xhci_dbc_ring_init()
* xhci_clear_command_ring()
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-9-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move the command ring TRB reservation from xhci_mem_init() to xhci_init().
Function xhci_mem_init() is intended for memory allocation,
while xhci_init() is for initialization.
This split allows xhci_init() to be reused when resuming from S4
suspend-to-disk.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-8-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Introduce xhci_rh_bw_cleanup() to release all bandwidth tracking
structures associated with xHCI roothub ports.
The new helper clears:
* TT bandwidth entries
* Per-interval endpoint lists
This refactors and consolidates the existing per-port cleanup logic
previously embedded in xhci_mem_cleanup(), reducing duplication and
making the teardown sequence easier to follow.
The helper will also be reused for upcoming S4 resume handling.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-7-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A Restore Error or Host Controller Error indicates that the host controller
failed to resume after suspend. In such cases, the xhci driver is fully
re-initialized, similar to a post-hibernation scenario.
The existing error check is only relevant when 'power_lost' is false.
If 'power_lost' is true, a Restore or Controller error has no effect:
no warning is printed and the 'power_lost' state remains unchanged.
Move the entire error check into the if '!power_lost' condition
to make this dependency explicit and simplify the resume logic.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-6-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function compliance_mode_recovery_timer_init() is called from
xhci_init() because the Compliance Mode Recovery Timer (CMRT) must be set
up before xhci_run() when the xhci driver is re-initialized.
To handle this case, the boolean flag 'comp_timer_running' was introduced
to track whether xhci_run() had already been called, ensuring that
xhci_resume() would not invoke compliance_mode_recovery_timer_init()
a second time.
This can be simplified by moving the 'done' label in xhci_resume() to
after the compliance_mode_recovery_timer_init() call. With this change,
the timer initialization runs only when the xhci driver has not been
re-initialized, making the 'comp_timer_running' flag unnecessary and
allowing it to be removed.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace kernel USB speed numbers with xHCI protocol IDs expected by HW.
They are numerically equal up to high speed, but instead of SuperSpeed
we were querying SuperSpeed+.
Gen1 hardware rejects such commands with TRB Error, which resulted in
zero available bandwidth being shown.
While at that, report failures properly. No attempt made at "tunneling"
all possible comp codes through errno, debugfs users may inspect the
result through event-ring/trbs.
Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
USBSTS is mostly RW1C, so to clear EINT we should write just this
one bit. Remove pointless code which ORs the bit with current value
of the register, even though the bit is already known to be set,
and writes the result back, which clears all active RW1C flags.
We used to inadvertently clear PCD and SRE in this way. PCD isn't
used by the driver and SRE is only used at resume, so clearing them
should make no difference. Don't clear them anymore.
Tested by connecting and mounting a storage device on a few HCs.
Before: xhci_irq USBSTS 0x00000018 EINT PCD -> 0x00000000
xhci_irq USBSTS 0x00000008 EINT -> 0x00000000
After: xhci_irq USBSTS 0x00000018 EINT PCD -> 0x00000010 PCD
xhci_irq USBSTS 0x00000018 EINT PCD -> 0x00000010 PCD
Some flags are RsvdZ - should be written as zero regardless of the
value read, so technically it was a bug. But no problems are known.
Signed-off-by: Michal Pecio <michal.pecio@gmail.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260402131342.2628648-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are some new modem and io_edgeport device ids.
All have been in linux-next with no reported issues.
-----BEGIN PGP SIGNATURE-----
iJEEABYKADkWIQQHbPq+cpGvN/peuzMLxc3C7H1lCAUCac47RhsUgAAAAAAEAA5t
YW51MiwyLjUrMS4xMSwyLDIACgkQC8XNwux9ZQj6ogD+J7RkeU4bfuFIJVYjDlZD
mY8ocNFYW62JJAE1ItNwkQcA/3YYUjmFTDZMCV3HtJsdqqVvFCDOo8Mv4Es1k2GJ
OicD
=dd+4
-----END PGP SIGNATURE-----
Merge tag 'usb-serial-7.0-rc7' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB serial device ids for 7.0-rc7
Here are some new modem and io_edgeport device ids.
All have been in linux-next with no reported issues.
* tag 'usb-serial-7.0-rc7' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: option: add MeiG Smart SRM825WN
USB: serial: io_edgeport: add support for Blackbox IC135A
USB: serial: option: add support for Rolling Wireless RW135R-GL
There was an issue when you did the following:
- setup and bind an hid gadget
- open /dev/hidg0
- use the resulting fd in EPOLL_CTL_ADD
- unbind the UDC
- bind the UDC
- use the fd in EPOLL_CTL_DEL
When CONFIG_DEBUG_LIST was enabled, a list_del corruption was reported
within remove_wait_queue (via ep_remove_wait_queue). After some
debugging I found out that the queues, which f_hid registers via
poll_wait were the problem. These were initialized using
init_waitqueue_head inside hidg_bind. So effectively, the bind function
re-initialized the queues while there were still items in them.
The solution is to move the initialization from hidg_bind to hidg_alloc
to extend their lifetimes to the lifetime of the function instance.
Additionally, I found many other possibly problematic init calls in the
bind function, which I moved as well.
Signed-off-by: Michael Zimmermann <sigmaepsilon92@gmail.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260331184844.2388761-1-sigmaepsilon92@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usbip_pad_iso() repositions ISO frame data within the transfer buffer
via memmove(). Neither the source offset (actualoffset, derived by
subtracting wire-supplied actual_length values) nor the destination
offset (iso_frame_desc[i].offset, taken directly from the wire) is
bounds-checked.
If a crafted actual_length wraps actualoffset negative through the
subtraction (see patch 2/3 for the root cause), the memmove source
points before the allocation - slab OOB read, data returned to
userspace.
Independently, iso_frame_desc[i].offset is never validated against
transfer_buffer_length. Setting offset past the end of the buffer
gives a fully controlled OOB write into whatever sits next in the
slab - confirmed with offset=400 on a 392-byte buffer, 64-byte write.
Add bounds checks for both the source and destination ranges before
each memmove call. Use unsigned comparisons after the sign check on
actualoffset to avoid signed/unsigned conversion surprises.
Signed-off-by: Kelvin Mbogo <addcontent08@gmail.com>
Link: https://patch.msgid.link/20260325103640.8090-3-addcontent08@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usbip_recv_iso() sums each frame's actual_length into an int
accumulator without checking the individual values first:
total_length += urb->iso_frame_desc[i].actual_length;
A malicious server can send actual_length = 0xFFFFFFFC for one frame
and a small value for the other, making the signed sum wrap around to
match urb->actual_length. The sanity check passes, and usbip_pad_iso()
later computes a negative actualoffset, feeding it to memmove() as a
source pointer - reads before the allocation, leaked to userspace via
USBDEVFS_REAPURB.
Reject any frame whose actual_length exceeds transfer_buffer_length
(one frame can't carry more data than the whole buffer), and widen the
accumulator to u32 so that many moderately-large frames can't wrap it
either.
Signed-off-by: Kelvin Mbogo <addcontent08@gmail.com>
Link: https://patch.msgid.link/20260325103640.8090-2-addcontent08@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usbip_recv_iso() computes the iso descriptor buffer size as:
int size = np * sizeof(*iso);
where np comes straight from the wire (urb->number_of_packets, set by
usbip_pack_ret_submit() before we get here). With np = 0x10000001 and
sizeof(*iso) == 16 the product is 0x100000010 which truncates to 16 on
a 32-bit int. kzalloc(16) succeeds but the following receive loop
writes np * 16 bytes into it - game over.
USBIP_MAX_ISO_PACKETS (1024) already exists in usbip_common.h for the
submit path but was never enforced on the receive side.
Clamp np to [1, USBIP_MAX_ISO_PACKETS] and switch to kcalloc() so
the allocator itself can catch overflows in the future. Fold the
existing np == 0 early return into the new bounds check.
usbip_pack_ret_submit() already copied the bogus np into
urb->number_of_packets before we run, so just returning -EPROTO is
not enough - processcompl() in the HCD will still iterate that many
iso_frame_desc entries when it completes the failed URB. Zero out
urb->number_of_packets before bailing to prevent that secondary crash
(confirmed on 6.12.0, processcompl+0x63 with CR2 in unmapped slab).
Signed-off-by: Kelvin Mbogo <addcontent08@gmail.com>
Link: https://patch.msgid.link/20260325103640.8090-1-addcontent08@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove usb_offload_get() and usb_offload_put() from the xHCI sideband
interrupter creation and removal paths.
The responsibility of manipulating offload_usage now lies entirely with
the USB class drivers. They have the precise context of when an offload
data stream actually starts and stops, ensuring a much more accurate
representation of offload activity for power management.
Cc: stable <stable@kernel.org>
Fixes: ef82a4803a ("xhci: sideband: add api to trace sideband usage")
Signed-off-by: Guan-Yu Lin <guanyulin@google.com>
Tested-by: Hailong Liu <hailong.liu@oppo.com>
Tested-by: hailong.liu@oppo.com
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260401123238.3790062-3-guanyulin@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace the coarse USB device lock with a dedicated offload_lock
spinlock to reduce contention during offload operations. Use
offload_pm_locked to synchronize with PM transitions and replace
the legacy offload_at_suspend flag.
Optimize usb_offload_get/put by switching from auto-resume/suspend
to pm_runtime_get_if_active(). This ensures offload state is only
modified when the device is already active, avoiding unnecessary
power transitions.
Cc: stable <stable@kernel.org>
Fixes: ef82a4803a ("xhci: sideband: add api to trace sideband usage")
Signed-off-by: Guan-Yu Lin <guanyulin@google.com>
Tested-by: Hailong Liu <hailong.liu@oppo.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260401123238.3790062-2-guanyulin@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When cdns3_gadget_start() fails, the DRD hardware is left in gadget mode
while software state remains INACTIVE, creating hardware/software state
inconsistency.
When switching to host mode via sysfs:
echo host > /sys/class/usb_role/13180000.usb-role-switch/role
The role state is not set to CDNS_ROLE_STATE_ACTIVE due to the error,
so cdns_role_stop() skips cleanup because state is still INACTIVE.
This violates the DRD controller design specification (Figure22),
which requires returning to idle state before switching roles.
This leads to a synchronous external abort in xhci_gen_setup() when
setting up the host controller:
[ 516.440698] configfs-gadget 13180000.usb: failed to start g1: -19
[ 516.442035] cdns-usb3 13180000.usb: Failed to add gadget
[ 516.443278] cdns-usb3 13180000.usb: set role 2 has failed
...
[ 1301.375722] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 1301.377716] Internal error: synchronous external abort: 96000010 [#1] PREEMPT SMP
[ 1301.382485] pc : xhci_gen_setup+0xa4/0x408
[ 1301.393391] backtrace:
...
xhci_gen_setup+0xa4/0x408 <-- CRASH
xhci_plat_setup+0x44/0x58
usb_add_hcd+0x284/0x678
...
cdns_role_set+0x9c/0xbc <-- Role switch
Fix by calling cdns_drd_gadget_off() in the error path to properly
clean up the DRD gadget state.
Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Yongchao Wu <yongchao.wu@autochips.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://patch.msgid.link/20260401001000.5761-1-yongchao.wu@autochips.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When platform_get_drvdata() returns NULL and probe defers, the error
path jumps to the 'depopulate' label, skipping put_device() for the
reference acquired by of_find_device_by_node(). This extra reference
prevents the child platform device from being freed when
of_platform_depopulate() is called, resulting in memory leaks reported
by kmemleak:
unreferenced object 0xffff0000c92c1480 (size 64):
comm "kworker/u16:2", pid 50, jiffies 4294895789
backtrace (crc 49d507d0):
kmemleak_alloc+0x34/0x40
__kmalloc_noprof+0x430/0x670
of_device_alloc+0xec/0x26c
of_platform_device_create_pdata+0x60/0x1f0
of_platform_bus_create+0x290/0x610
of_platform_populate+0x74/0x118
dwc3_imx8mp_probe+0x228/0x734
Fixes: 86767625f5 ("usb: dwc3: imx8mp: disable auto suspend for host role")
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260401134938.686748-1-xiaolei.wang@windriver.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
f_audio_complete() copies req->length bytes into a 4-byte stack
variable:
u32 data = 0;
memcpy(&data, req->buf, req->length);
req->length is derived from the host-controlled USB request path,
which can lead to a stack out-of-bounds write.
Validate req->actual against the expected payload size for the
supported control selectors and decode only the expected amount
of data.
This avoids copying a host-influenced length into a fixed-size
stack object.
Signed-off-by: Taegu Ha <hataegu0826@gmail.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260401191311.3604898-1-hataegu0826@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When device_register() fails, ulpi_register() calls put_device() on
ulpi->dev.
The device release callback ulpi_dev_release() drops the OF node
reference and frees ulpi, but the current error path in
ulpi_register_interface() then calls kfree(ulpi) again, causing a
double free.
Let put_device() handle the cleanup through ulpi_dev_release() and
avoid freeing ulpi again in ulpi_register_interface().
Fixes: 289fcff4bc ("usb: add bus type for USB ULPI")
Cc: stable <stable@kernel.org>
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260401025142.1398996-1-lgs201920130244@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When usb_submit_urb() fails in usbio_probe(), the previously allocated
URB is never freed, causing a memory leak.
Fix this by jumping to err_free_urb label to properly release the URB
on the error path.
Fixes: 121a0f839d ("usb: misc: Add Intel USBIO bridge driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Reviewed-by: Oliver Neukum <oneukum@suse.com>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Link: https://patch.msgid.link/20260331-usbio-v2-1-d8c48dad9463@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Razer Kiyo Pro (1532:0e05) is a USB 3.0 UVC webcam whose firmware
does not handle USB Link Power Management transitions reliably. When LPM
is active, the device can enter a state where it fails to respond to
control transfers, producing EPIPE (-32) errors on UVC probe control
SET_CUR requests. In the worst case, the stalled endpoint triggers an
xHCI stop-endpoint command that times out, causing the host controller
to be declared dead and every USB device on the bus to be disconnected.
This has been reported as Ubuntu Launchpad Bug #2061177. The failure
mode is:
1. UVC probe control SET_CUR returns -32 (EPIPE)
2. xHCI host not responding to stop endpoint command
3. xHCI host controller not responding, assume dead
4. All USB devices on the affected xHCI controller disconnect
Disabling LPM prevents the firmware from entering the problematic low-
power states that precede the stall. This is the same approach used for
other webcams with similar firmware issues (e.g., Logitech HD Webcam C270).
Cc: stable <stable@kernel.org>
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2061177
Signed-off-by: JP Hein <jp@jphein.com>
Link: https://patch.msgid.link/20260331003806.212565-2-jp@jphein.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When the gadget endpoint is disabled or not yet configured, the ep->desc
pointer can be NULL. This leads to a NULL pointer dereference when
__cdns3_gadget_ep_queue() is called, causing a kernel crash.
Add a check to return -ESHUTDOWN if ep->desc is NULL, which is the
standard return code for unconfigured endpoints.
This prevents potential crashes when ep_queue is called on endpoints
that are not ready.
Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Yongchao Wu <yongchao.wu@autochips.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://patch.msgid.link/20260331000407.613298-1-yongchao.wu@autochips.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 53a2d95df8 ("usb: core: add phy notify connect and disconnect")
causes double use of the 'usb3-phy' in certain cases.
Since that commit, if a generic PHY named 'usb3-phy' is specified in
the device tree, that is getting added to the 'phy_roothub' list of the
secondary HCD by the usb_phy_roothub_alloc_usb3_phy() function. However,
that PHY is getting added also to the primary HCD's 'phy_roothub' list
by usb_phy_roothub_alloc() if there is no generic PHY specified with
'usb2-phy' name.
This causes that the usb_add_hcd() function executes each phy operations
twice on the 'usb3-phy'. Once when the primary HCD is added, then once
again when the secondary HCD is added.
The issue affects the Marvell Armada 3700 platform at least, where a
custom name is used for the USB2 PHY:
$ git grep 'phy-names.*usb3' arch/arm64/boot/dts/marvell/armada-37xx.dtsi | tr '\t' ' '
arch/arm64/boot/dts/marvell/armada-37xx.dtsi: phy-names = "usb3-phy", "usb2-utmi-otg-phy";
Extend the usb_phy_roothub_alloc_usb3_phy() function to skip adding the
'usb3-phy' to the 'phy_roothub' list of the secondary HCD when 'usb2-phy'
is not specified in the device tree to avoid the double use.
Fixes: 53a2d95df8 ("usb: core: add phy notify connect and disconnect")
Cc: stable <stable@kernel.org>
Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
Link: https://patch.msgid.link/20260330-usb-avoid-usb3-phy-double-use-v1-1-d2113aecb535@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch introduces support for operating the Cadence USBSSP (cdnsp)
controller in a peripheral-only mode, bypassing the Dual-Role Device (DRD)
logic.
The change in BAR indexing (from BAR 2 to BAR 1) is a direct
consequence of switching from 64-bit to 32-bit addressing in the
Peripheral-only configuration.
Tested on PCI platform with Device-only configuration. Platform-side
changes are included to support the PCI glue layer's property injection.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com> # pci_ids.h
Link: https://patch.msgid.link/20260331-device_only-v1-1-00378b80365c@cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The net_device is allocated during function instance creation and
registered during the bind phase with the gadget device as its sysfs
parent. When the function unbinds, the parent device is destroyed, but
the net_device survives, resulting in dangling sysfs symlinks:
console:/ # ls -l /sys/class/net/usb0
lrwxrwxrwx ... /sys/class/net/usb0 ->
/sys/devices/platform/.../gadget.0/net/usb0
console:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0
ls: .../gadget.0/net/usb0: No such file or directory
Use device_move() to reparent the net_device between the gadget device
tree and /sys/devices/virtual across bind and unbind cycles. During the
final unbind, calling device_move(NULL) moves the net_device to the
virtual device tree before the gadget device is destroyed. On rebinding,
device_move() reparents the device back under the new gadget, ensuring
proper sysfs topology and power management ordering.
To maintain compatibility with legacy composite drivers (e.g., multi.c),
the borrowed_net flag is used to indicate whether the network device is
shared and pre-registered during the legacy driver's bind phase.
Fixes: f466c63538 ("usb: gadget: f_rndis: convert to new function interface with backward compatibility")
Cc: stable@vger.kernel.org
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260320-usb-net-lifecycle-v1-7-4886b578161b@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The net_device is allocated during function instance creation and
registered during the bind phase with the gadget device as its sysfs
parent. When the function unbinds, the parent device is destroyed, but
the net_device survives, resulting in dangling sysfs symlinks:
console:/ # ls -l /sys/class/net/usb0
lrwxrwxrwx ... /sys/class/net/usb0 ->
/sys/devices/platform/.../gadget.0/net/usb0
console:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0
ls: .../gadget.0/net/usb0: No such file or directory
Use device_move() to reparent the net_device between the gadget device
tree and /sys/devices/virtual across bind and unbind cycles. During the
final unbind, calling device_move(NULL) moves the net_device to the
virtual device tree before the gadget device is destroyed. On rebinding,
device_move() reparents the device back under the new gadget, ensuring
proper sysfs topology and power management ordering.
To maintain compatibility with legacy composite drivers (e.g., multi.c),
the bound flag is used to indicate whether the network device is shared
and pre-registered during the legacy driver's bind phase.
Fixes: 8cedba7c73 ("usb: gadget: f_subset: convert to new function interface with backward compatibility")
Cc: stable@vger.kernel.org
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260320-usb-net-lifecycle-v1-6-4886b578161b@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The net_device is allocated during function instance creation and
registered during the bind phase with the gadget device as its sysfs
parent. When the function unbinds, the parent device is destroyed, but
the net_device survives, resulting in dangling sysfs symlinks:
console:/ # ls -l /sys/class/net/usb0
lrwxrwxrwx ... /sys/class/net/usb0 ->
/sys/devices/platform/.../gadget.0/net/usb0
console:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0
ls: .../gadget.0/net/usb0: No such file or directory
Use device_move() to reparent the net_device between the gadget device
tree and /sys/devices/virtual across bind and unbind cycles. During the
final unbind, calling device_move(NULL) moves the net_device to the
virtual device tree before the gadget device is destroyed. On rebinding,
device_move() reparents the device back under the new gadget, ensuring
proper sysfs topology and power management ordering.
To maintain compatibility with legacy composite drivers (e.g., multi.c),
the bound flag is used to indicate whether the network device is shared
and pre-registered during the legacy driver's bind phase.
Fixes: b29002a157 ("usb: gadget: f_eem: convert to new function interface with backward compatibility")
Cc: stable@vger.kernel.org
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260320-usb-net-lifecycle-v1-5-4886b578161b@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The net_device is allocated during function instance creation and
registered during the bind phase with the gadget device as its sysfs
parent. When the function unbinds, the parent device is destroyed, but
the net_device survives, resulting in dangling sysfs symlinks:
console:/ # ls -l /sys/class/net/usb0
lrwxrwxrwx ... /sys/class/net/usb0 ->
/sys/devices/platform/.../gadget.0/net/usb0
console:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0
ls: .../gadget.0/net/usb0: No such file or directory
Use device_move() to reparent the net_device between the gadget device
tree and /sys/devices/virtual across bind and unbind cycles. During the
final unbind, calling device_move(NULL) moves the net_device to the
virtual device tree before the gadget device is destroyed. On rebinding,
device_move() reparents the device back under the new gadget, ensuring
proper sysfs topology and power management ordering.
To maintain compatibility with legacy composite drivers (e.g., multi.c),
the bound flag is used to indicate whether the network device is shared
and pre-registered during the legacy driver's bind phase.
Fixes: fee562a645 ("usb: gadget: f_ecm: convert to new function interface with backward compatibility")
Cc: stable@vger.kernel.org
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260320-usb-net-lifecycle-v1-4-4886b578161b@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The class/subclass/protocol options are suspectible to race conditions
as they can be accessed concurrently through configfs.
Use existing mutex to protect these options. This issue was identified
during code inspection.
Fixes: 73517cf49b ("usb: gadget: add RNDIS configfs options for class/subclass/protocol")
Cc: stable@vger.kernel.org
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260320-usb-net-lifecycle-v1-2-4886b578161b@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
geth_alloc() increments the reference count, but geth_free() fails to
decrement it. This prevents the configuration of attributes via configfs
after unlinking the function.
Decrement the reference count in geth_free() to ensure proper cleanup.
Fixes: 02832e56f8 ("usb: gadget: f_subset: add configfs support")
Cc: stable@vger.kernel.org
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260320-usb-net-lifecycle-v1-1-4886b578161b@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the current implementation, if a cable's alternate mode enter operation
is not supported, the tbt->plug[TYPEC_PLUG_SOP_P] pointer is cleared by the
time tbt_enter_mode() is called. This prevents the driver from identifying
the cable's VDO.
As a result, the Thunderbolt connection falls back to the default
TBT_CABLE_USB3_PASSIVE speed, even if the cable supports higher speeds.
To ensure the correct VDO value is used during mode entry, calculate and
store the enter_vdo earlier during the initialization phase in tbt_ready().
Cc: stable <stable@kernel.org>
Fixes: 100e257386 ("usb: typec: Add driver for Thunderbolt 3 Alternate Mode")
Tested-by: Madhu M <madhu.m@intel.corp-partner.google.com>
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://patch.msgid.link/20260324103012.1417616-1-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The typec plug alternate mode is already registered as part of the bus.
When both class and bus are set for a device, device_add() attempts to
create the "subsystem" symlink in the device's sysfs directory twice, once
for the bus and once for the class.
This results in a duplicate filename error during registration,
causing the alternate mode registration to fail with warnings:
cannot create duplicate filename '/devices/pci0000:00/0000:00:1f.0/
PNP0C09:00/GOOG0004:00/cros-ec-dev.1.auto/cros_ec_ucsi.3.auto/typec/
port1/port1-cable/port1-plug0/port1-plug0.0/subsystem'
typec port0-plug0: failed to register alternate mode (-17)
cros_ec_ucsi.3.auto: failed to registers svid 0x8087 mode 1
Cc: stable <stable@kernel.org>
Fixes: 67ab454262 ("usb: typec: Set the bus also for the port and plug altmodes")
Tested-by: Madhu M <madhu.m@intel.corp-partner.google.com>
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://patch.msgid.link/20260324102903.1416210-1-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dwc2_gadget_exit_clock_gating() internally calls call_gadget() macro,
which expects hsotg->lock to be held since it does spin_unlock/spin_lock
around the gadget driver callback invocation.
However, dwc2_hsotg_udc_stop() calls dwc2_gadget_exit_clock_gating()
without holding the lock. This leads to:
- spin_unlock on a lock that is not held (undefined behavior)
- The lock remaining held after dwc2_gadget_exit_clock_gating() returns,
causing a deadlock when spin_lock_irqsave() is called later in the
same function.
Fix this by acquiring hsotg->lock before calling
dwc2_gadget_exit_clock_gating() and releasing it afterwards, which
satisfies the locking requirement of the call_gadget() macro.
Fixes: af076a41f8 ("usb: dwc2: also exit clock_gating when stopping udc while suspended")
Cc: stable <stable@kernel.org>
Signed-off-by: Juno Choi <juno.choi@lge.com>
Link: https://patch.msgid.link/20260324014910.2798425-1-juno.choi@lge.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit b81ac4395b ("usb: gadget: uvc: allow for application to cleanly
shutdown") introduced two stages of synchronization waits totaling 1500ms
in uvc_function_unbind() to prevent several types of kernel panics.
However, this timing-based approach is insufficient during power
management (PM) transitions.
When the PM subsystem starts freezing user space processes, the
wait_event_interruptible_timeout() is aborted early, which allows the
unbind thread to proceed and nullify the gadget pointer
(cdev->gadget = NULL):
[ 814.123447][ T947] configfs-gadget.g1 gadget.0: uvc: uvc_function_unbind()
[ 814.178583][ T3173] PM: suspend entry (deep)
[ 814.192487][ T3173] Freezing user space processes
[ 814.197668][ T947] configfs-gadget.g1 gadget.0: uvc: uvc_function_unbind no clean disconnect, wait for release
When the PM subsystem resumes or aborts the suspend and tasks are
restarted, the V4L2 release path is executed and attempts to access the
already nullified gadget pointer, triggering a kernel panic:
[ 814.292597][ C0] PM: pm_system_irq_wakeup: 479 triggered dhdpcie_host_wake
[ 814.386727][ T3173] Restarting tasks ...
[ 814.403522][ T4558] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030
[ 814.404021][ T4558] pc : usb_gadget_deactivate+0x14/0xf4
[ 814.404031][ T4558] lr : usb_function_deactivate+0x54/0x94
[ 814.404078][ T4558] Call trace:
[ 814.404080][ T4558] usb_gadget_deactivate+0x14/0xf4
[ 814.404083][ T4558] usb_function_deactivate+0x54/0x94
[ 814.404087][ T4558] uvc_function_disconnect+0x1c/0x5c
[ 814.404092][ T4558] uvc_v4l2_release+0x44/0xac
[ 814.404095][ T4558] v4l2_release+0xcc/0x130
Address the race condition and NULL pointer dereference by:
1. State Synchronization (flag + mutex)
Introduce a 'func_unbound' flag in struct uvc_device. This allows
uvc_function_disconnect() to safely skip accessing the nullified
cdev->gadget pointer. As suggested by Alan Stern, this flag is protected
by a new mutex (uvc->lock) to ensure proper memory ordering and prevent
instruction reordering or speculative loads. This mutex is also used to
protect 'func_connected' for consistent state management.
2. Explicit Synchronization (completion)
Use a completion to synchronize uvc_function_unbind() with the
uvc_vdev_release() callback. This prevents Use-After-Free (UAF) by
ensuring struct uvc_device is freed after all video device resources
are released.
Fixes: b81ac4395b ("usb: gadget: uvc: allow for application to cleanly shutdown")
Cc: stable <stable@kernel.org>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jimmy Hu <hhhuuu@google.com>
Link: https://patch.msgid.link/20260320065427.1374555-1-hhhuuu@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Another Silicon Motion flash drive also randomly work incorrectly
(lsusb does not list the device) on Huawei hisi platforms during
500 reboot cycles, and the DELAY_INIT quirk fixes this issue.
Signed-off-by: Miao Li <limiao@kylinos.cn>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260319053927.264840-1-limiao870622@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
echi_brcm_wait_for_sof() gets called after disabling interrupts
in ehci_brcm_hub_control(). Use the atomic version of poll_timeout
to fix the warning.
Fixes: 9df231511b ("usb: ehci: Add new EHCI driver for Broadcom STB SoC's")
Cc: stable <stable@kernel.org>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260318185707.2588431-1-justin.chen@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
TCPCI maxim driver directly writes to the charger's register space to
set charger mode depending on the power role. As MAX77759 chg driver
exists, this WAR is not required.
Instead, use a regulator interface to source vbus when typec is in
source power mode. In other power modes, this regulator will be turned
off if active.
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: André Draszik <andre.draszik@linaro.org>
Link: https://patch.msgid.link/20260325-max77759-charger-v9-6-4486dd297adc@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Cadence USBSSP (CDNSP) controller was previously only accessible
through PCI, coupling the gadget driver with the PCI glue layer into a
single monolithic module (cdnsp-udc-pci). This prevented using the
CDNSP IP on SoC/platform designs that expose the controller through
device tree. It restructures the driver to decouple the CDNSP gadget
from PCI.
- Introduce CONFIG_USB_CDNSP as a standalone tristate (analogous to
CONFIG_USB_CDNS3), with USB_CDNSP_GADGET and USB_CDNSP_HOST as
bool sub-options. The gadget code builds as a separate cdnsp.ko
module.
- Regroup USBSSP and CDNS3 Kconfig options under the USB_CDNS_SUPPORT
menu so they appear properly grouped in menuconfig.
- Refactor cdnsp-pci.c into a thin PCI-to-platform wrapper (similar
to cdns3-pci-wrap.c) that registers a platform device and passes
PCI resources and platform data to the common platform driver.
- Auto-detect the controller version (USBSS vs USBSSP) at runtime by
reading the DRD/OTG Device ID register in cdns_drd_init(), and select
the appropriate gadget init function (cdns3_gadget_init or
cdnsp_gadget_init) based on cdns->version. This follows the same
pattern already used for host initialization.
- Fix gadget-export.h to use IS_REACHABLE() keyed on the tristate
module config (CONFIG_USB_CDNS3/CONFIG_USB_CDNSP) instead of
IS_ENABLED() on the bool gadget config. The bool configs are always
'y' when enabled, causing IS_ENABLED/IS_REACHABLE to always return
true and resulting in link errors when cdns-usb-common is built-in
but the gadget module is loadable.
- Add missing MODULE_LICENSE()/MODULE_DESCRIPTION() and
EXPORT_SYMBOL_GPL() to the cdns3 and cdnsp gadget modules, required
by modpost.
- Pass override_apb_timeout through cdns3_platform_data so the PCI
wrapper can communicate PCI-specific APB timeout values to the
common driver.
This patch is Assisted-by: Cursor:claude-4.6-opus
Signed-off-by: Peter Chen <peter.chen@cixtech.com>
Acked-by: Pawel Laszczak <pawell@cadence.com>
Link: https://patch.msgid.link/20260316064831.274865-3-peter.chen@cixtech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
FUSB302 fails to probe with -EINVAL if its interrupt line is connected via
an I2C GPIO expander, such as TI TCA6416.
Switch the interrupt handler to a threaded one, which also works behind
such GPIO expanders.
Cc: stable <stable@kernel.org>
Fixes: 309b6341d5 ("usb: typec: fusb302: Revert incorrect threaded irq fix")
Signed-off-by: Alexey Charkov <alchark@flipper.net>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Reviewed-by: Heikki Krogerus <heikki.krogrerus@linux.intel.com>
Link: https://patch.msgid.link/20260317-fusb302-irq-v2-1-dbabd5c5c961@flipper.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Existing checks for VID/PID/DID in the driver are redundant since the
driver is already matched to the device via I2C device ID and OF
compatible strings, and they preclude the use of fallback compatibles.
Remove them to make the driver slimmer and adding new clones easier.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Alexey Charkov <alchark@flipper.net>
Link: https://patch.msgid.link/20260318-husb311-v4-4-69e029255430@flipper.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some SpacemiT K1 boards (like OrangePi R2S) provide USB VBUS
through a controllable regulator. Add support for the optional
vbus-supply property so the regulator can be properly managed
in host mode instead of left always-on. Note that this doesn't
apply to USB Hub downstream ports with different VBUS supplies.
The enabled and disabled actions of the regulator are handled
automatically by devm_regulator_get_enable_optional().
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Anand Moon <linux.amoon@gmail.com>
Link: https://patch.msgid.link/20260326100010.3588454-2-amadeus@jmu.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function usb_gadget_udc_start() was renamed to
usb_gadget_udc_start_locked() by commit 286d9975a8 ("usb: gadget:
udc: core: Prevent soft_connect_store() race"). Update the comment
in usb_gadget_udc_set_speed() accordingly.
Assisted-by: unnamed:deepseek-v3.2 coccinelle
Signed-off-by: Kexin Sun <kexinsun@smail.nju.edu.cn>
Link: https://patch.msgid.link/20260321110006.8484-1-kexinsun@smail.nju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the chip indicates its "Connection Orientation" standard output control
in STANDARD_OUTPUT_CAPABILITIES register, it can do the thing by
programming CONFIG_STANDARD_OUTPUT register. Due to the optional feature,
the chip which not present this capability currently doesn't have a way to
correctly set the data path. This add the support to set orientation via
a simple GPIO.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260319-support-setting-orientation-use-gpio-v4-2-ab6dfa8610c2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This allows to reduce the size of the initramfs by only selecting
the related firmware when a given SOC is enabled.
Signed-off-by: Nicolas Chauvet <kwizart@gmail.com>
Link: https://patch.msgid.link/20260323140249.173603-1-kwizart@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
bdc_sr_xsf() decodes a 5-bit endpoint number from the hardware status
report and uses it to index bdc->bdc_ep_array[] directly. The array is
only allocated to bdc->num_eps for the current controller instance, so a
status report can carry an endpoint number that still fits the 5-bit
field but does not fit the runtime-sized endpoint table.
Reject status reports whose endpoint number is outside bdc->num_eps
before indexing the endpoint array.
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Justin Chen <justin.chen@broadcom.com>
Link: https://patch.msgid.link/20260323121730.75245-1-pengpeng@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver uses its own definitions for HID requests.
This leads to duplication and obfuscation. Use HID's
definitions.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260325171311.384010-2-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver uses its own definitions for HID requests.
This leads to duplication and obfuscation. Use HID's
definitions.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260325171311.384010-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If a runtime suspend is executed followed by a system suspend, the driver
may invoke dwc3_imx_suspend() twice, which causes enable_irq() to be
called twice as well. This leads to an unbalanced IRQ state and may
trigger warnings or malfunction. Prevent this by checking the pm_suspended
flag before running the imx suspend/resume path.
Fixes: 76fc9452a6 ("usb: dwc3: introduce flatten model driver of i.MX Soc")
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260317030546.1665206-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a gadget request is only partially transferred in transfer()
because the per-frame bandwidth budget is exhausted, the loop advances
to the next queued request. If that next request is a zero-length
packet (ZLP), len evaluates to zero and the code takes the
unlikely(len == 0) path, which sets is_short = 1. This bypasses the
bandwidth guard ("limit < ep->ep.maxpacket && limit < len") that
lives in the else branch and would otherwise break out of the loop for
non-zero requests. The is_short path then completes the URB before all
data from the first request has been transferred.
Reproducer (bulk IN, high speed):
Device side (FunctionFS with Linux AIO):
1. Queue a 65024-byte write via io_submit (127 * 512, i.e. a
multiple of the HS bulk max packet size).
2. Immediately queue a zero-length write (ZLP) via io_submit.
Host side:
3. Submit a 65536-byte bulk IN URB.
Expected: URB completes with actual_length = 65024.
Actual: URB completes with actual_length = 53248, losing 11776
bytes that leak into subsequent URBs.
At high speed the per-frame budget is 53248 bytes (512 * 13 * 8).
The 65024-byte request exhausts this budget after 53248 bytes, leaving
the request incomplete (req->req.actual < req->req.length). Neither
the request nor the URB is finished, and rescan is 0, so the loop
advances to the ZLP. For the ZLP, dev_len = 0, so len = min(12288, 0)
= 0, taking the unlikely(len == 0) path and setting is_short = 1.
The is_short handler then sets *status = 0, completing the URB with
only 53248 of the expected 65024 bytes.
Fix this by breaking out of the loop when the current request has
remaining data (req->req.actual < req->req.length). The request
resumes on the next timer tick, preserving correct data ordering.
Signed-off-by: Sebastian Urban <surban@surban.net>
Cc: stable <stable@kernel.org>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20260315151045.1155850-1-surban@surban.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When syscon_regmap_lookup_by_phandle_args() fails, the function was
returning directly without cleaning up the power domain initialized
earlier by dwc3_google_pm_domain_init().
Fix by jumping to err_deinit_pdom to properly clean up resources.
Fixes: 8995a37371 ("usb: dwc3: Add Google Tensor SoC DWC3 glue driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260316-dwc3-google-v1-1-c9bde1b02f62@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This device has a union descriptor that is just garbage
and needs a custom descriptor.
In principle this could be done with a (conditionally
activated) heuristic. That would match more devices
without a need for defining a new quirk. However,
this always carries the risk that the heuristics
does the wrong thing and leads to more breakage.
Defining the quirk and telling it exactly what to do
is the safe and conservative approach.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260317084139.1461008-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit ec35c19696 ("usb: gadget: f_ncm: Fix net_device lifecycle with
device_move") reparents the gadget device to /sys/devices/virtual during
unbind, clearing the gadget pointer. If the userspace tool queries on
the surviving interface during this detached window, this leads to a
NULL pointer dereference.
Unable to handle kernel NULL pointer dereference
Call trace:
eth_get_drvinfo+0x50/0x90
ethtool_get_drvinfo+0x5c/0x1f0
__dev_ethtool+0xaec/0x1fe0
dev_ethtool+0x134/0x2e0
dev_ioctl+0x338/0x560
Add a NULL check for dev->gadget in eth_get_drvinfo(). When detached,
skip copying the fw_version and bus_info strings, which is natively
handled by ethtool_get_drvinfo for empty strings.
Suggested-by: Val Packett <val@packett.cool>
Reported-by: Val Packett <val@packett.cool>
Closes: https://lore.kernel.org/linux-usb/10890524-cf83-4a71-b879-93e2b2cc1fcc@packett.cool/
Fixes: ec35c19696 ("usb: gadget: f_ncm: Fix net_device lifecycle with device_move")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260316-eth-null-deref-v1-1-07005f33be85@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This fixes an error in synchronization in the dummy-hcd driver. The
error has a somewhat involved history. The synchronization mechanism
was introduced by commit 7dbd8f4cab ("USB: dummy-hcd: Fix erroneous
synchronization change"), which added an emulated "interrupts enabled"
flag together with code emulating synchronize_irq() (it waits until
all current handler callbacks have returned).
But the emulated interrupt-disable occurred too late, after the driver
containing the handler callback routines had been told that it was
unbound and no more callbacks would occur. Commit 4a5d797a9f ("usb:
gadget: dummy_hcd: fix gpf in gadget_setup") tried to fix this by
moving the synchronize_irq() emulation code from dummy_stop() to
dummy_pullup(), which runs before the unbind callback.
There still were races, though, because the emulated interrupt-disable
still occurred too late. It couldn't be moved to dummy_pullup(),
because that routine can be called for reasons other than an impending
unbind. Therefore commits 7dc0c55e9f ("USB: UDC core: Add
udc_async_callbacks gadget op") and 04145a03db ("USB: UDC: Implement
udc_async_callbacks in dummy-hcd") added an API allowing the UDC core
to tell dummy-hcd exactly when emulated interrupts and their callbacks
should be disabled.
That brings us to the current state of things, which is still wrong
because the emulated synchronize_irq() occurs before the emulated
interrupt-disable! That's no good, beause it means that more emulated
interrupts can occur after the synchronize_irq() emulation has run,
leading to the possibility that a callback handler may be running when
the gadget driver is unbound.
To fix this, we have to move the synchronize_irq() emulation code yet
again, to the dummy_udc_async_callbacks() routine, which takes care of
enabling and disabling emulated interrupt requests. The
synchronization will now run immediately after emulated interrupts are
disabled, which is where it belongs.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Fixes: 04145a03db ("USB: UDC: Implement udc_async_callbacks in dummy-hcd")
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/c7bc93fe-4241-4d04-bd56-27c12ba35c97@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Syzbot testing was able to provoke an addressing exception and crash
in the usb_gadget_udc_reset() routine in
drivers/usb/gadgets/udc/core.c, resulting from the fact that the
routine was called with a second ("driver") argument of NULL. The bad
caller was set_link_state() in dummy_hcd.c, and the problem arose
because of a race between a USB reset and driver unbind.
These sorts of races were not supposed to be possible; commit
7dbd8f4cab ("USB: dummy-hcd: Fix erroneous synchronization change"),
along with a few followup commits, was written specifically to prevent
them. As it turns out, there are (at least) two errors remaining in
the code. Another patch will address the second error; this one is
concerned with the first.
The error responsible for the syzbot crash occurred because the
stop_activity() routine will sometimes drop and then re-acquire the
dum->lock spinlock. A call to stop_activity() occurs in
set_link_state() when handling an emulated USB reset, after the test
of dum->ints_enabled and before the increment of dum->callback_usage.
This allowed another thread (doing a driver unbind) to sneak in and
grab the spinlock, and then clear dum->ints_enabled and dum->driver.
Normally this other thread would have to wait for dum->callback_usage
to go down to 0 before it would clear dum->driver, but in this case it
didn't have to wait since dum->callback_usage had not yet been
incremented.
The fix is to increment dum->callback_usage _before_ calling
stop_activity() instead of after. Then the thread doing the unbind
will not clear dum->driver until after the call to
usb_gadget_udc_reset() safely returns and dum->callback_usage has been
decremented again.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: syzbot+19bed92c97bee999e5db@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-usb/68fc7c9c.050a0220.346f24.023c.GAE@google.com/
Tested-by: syzbot+19bed92c97bee999e5db@syzkaller.appspotmail.com
Fixes: 7dbd8f4cab ("USB: dummy-hcd: Fix erroneous synchronization change")
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/46135f42-fdbe-46b5-aac0-6ca70492af15@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The connector number extracted from CCI via UCSI_CCI_CONNECTOR() is a
7-bit field (0-127) that is used to index into the connector array in
ucsi_connector_change(). However, the array is only allocated for the
number of connectors reported by the device (typically 2-4 entries).
A malicious or malfunctioning device could report an out-of-range
connector number in the CCI, causing an out-of-bounds array access in
ucsi_connector_change().
Add a bounds check in ucsi_notify_common(), the central point where CCI
is parsed after arriving from hardware, so that bogus connector numbers
are rejected before they propagate further.
Fixes: bdc62f2bae ("usb: typec: ucsi: Simplified registration and I/O API")
Cc: stable <stable@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Nathan Rebello <nathan.c.rebello@gmail.com>
Link: https://patch.msgid.link/20260313222453.123-1-nathan.c.rebello@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A race condition between gether_disconnect() and eth_stop() leads to a
NULL pointer dereference. Specifically, if eth_stop() is triggered
concurrently while gether_disconnect() is tearing down the endpoints,
eth_stop() attempts to access the cleared endpoint descriptor, causing
the following NPE:
Unable to handle kernel NULL pointer dereference
Call trace:
__dwc3_gadget_ep_enable+0x60/0x788
dwc3_gadget_ep_enable+0x70/0xe4
usb_ep_enable+0x60/0x15c
eth_stop+0xb8/0x108
Because eth_stop() crashes while holding the dev->lock, the thread
running gether_disconnect() fails to acquire the same lock and spins
forever, resulting in a hardlockup:
Core - Debugging Information for Hardlockup core(7)
Call trace:
queued_spin_lock_slowpath+0x94/0x488
_raw_spin_lock+0x64/0x6c
gether_disconnect+0x19c/0x1e8
ncm_set_alt+0x68/0x1a0
composite_setup+0x6a0/0xc50
The root cause is that the clearing of dev->port_usb in
gether_disconnect() is delayed until the end of the function.
Move the clearing of dev->port_usb to the very beginning of
gether_disconnect() while holding dev->lock. This cuts off the link
immediately, ensuring eth_stop() will see dev->port_usb as NULL and
safely bail out.
Fixes: 2b3d942c48 ("usb ethernet gadget: split out network core")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260311-gether-disconnect-npe-v1-1-454966adf7c7@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Static structure "ti_tusb8041_data" is exactly the same as
"ti_tusb8020b_data" and "cypress_hx2vl_data" is the same as
"microchip_usb424_data". Drop the duplicated structures to reduce
driver size and memory usage without affecting functionality.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260318084626.34314-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a port is disabled, an attached device will be disconnected. This
causes a port-status-change event, which will race with hub autosuspend
(if the disabled port was the only connected port on its hub), causing
an immediate resume and a second autosuspend. Both of these can be
avoided by adding a short delay after the call to
usb_hub_set_port_power().
Below log shows what is happening:
$ echo 1 > usb1-port1/disable
[ 37.958239] usb 1-1: USB disconnect, device number 2
[ 37.964101] usb 1-1: unregistering device
[ 37.970070] hub 1-0:1.0: hub_suspend
[ 37.971305] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
[ 37.974412] usb usb1: bus auto-suspend, wakeup 1
[ 37.988175] usb usb1: suspend raced with wakeup event <---
[ 37.993947] usb usb1: usb auto-resume
[ 37.998401] hub 1-0:1.0: hub_resume
[ 38.105688] usb usb1-port1: status 0000, change 0000, 12 Mb/s
[ 38.112399] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0000
[ 38.118645] hub 1-0:1.0: hub_suspend
[ 38.122963] usb usb1: bus auto-suspend, wakeup 1
[ 38.200368] usb usb1: usb wakeup-resume
[ 38.204982] usb usb1: usb auto-resume
[ 38.209376] hub 1-0:1.0: hub_resume
[ 38.213676] usb usb1-port1: status 0101 change 0001
[ 38.321552] hub 1-0:1.0: state 7 ports 1 chg 0002 evt 0000
[ 38.327978] usb usb1-port1: status 0101, change 0000, 12 Mb/s
[ 38.457429] usb 1-1: new high-speed USB device number 3 using ci_hdrc
Then, port change bit will be fixed to the final state and
usb_clear_port_feature() can correctly clear it after this period. This
will also avoid usb runtime suspend routine to run because
usb_autopm_put_interface() not run yet.
Fixes: f061f43d74 ("usb: hub: port: add sysfs entry to switch port power")
Cc: stable@kernel.org
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260316095042.1559882-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
USB core only relaxes the default PM_QOS_FLAG_NO_POWER_OFF policy when
an upstream hub reports switchable port power. That misses internal
ports whose power is managed by platform firmware instead of the USB
hub descriptor.
Allow the port-poweroff policy to be exposed for hard-wired ports with
an ACPI-managed power resource. The existing runtime PM path still
requires the child usage count to drop and remote wakeup to be clear
before it will power the port down.
This lets internal devices such as CNVi Bluetooth use the existing USB
ACPI runtime power path even when the root hub reports no USB-standard
port power switching.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Link: https://patch.msgid.link/20260315223433.23452-1-sean@starlabs.systems
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Instead of "shrinking" the allocation by kmalloc()ing a new, smaller
buffer, utilize krealloc() to shrink the existing allocation. This saves
a memcpy(), as well as eliminates the temporary `smallbuf` allocation,
which guards against allocation failure under extreme memory pressure.
Signed-off-by: Bence Csókás <bence98@sch.bme.hu>
Link: https://patch.msgid.link/20260315-usb-krealloc-v2-1-32f83e090409@sch.bme.hu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the ID entries and platform data for the Corechips SL6341 onboard
USB 2.0/3.0 hub controller, which requires a reset pin and a power supply
for proper operation.
Signed-off-by: Alexey Charkov <alchark@flipper.net>
Link: https://patch.msgid.link/20260311-sl6341-v1-3-0a890056f054@flipper.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
clk_enable() may fail according to the API contract.
Previously, udc_enable() ignored its return value and returned void.
Modify udc_enable() to return the error code. Additionally, update
all of its callers (pxa_udc_pullup, pxa_udc_vbus_session,
pxa27x_udc_start, pxa_udc_probe, and pxa_udc_resume) to check
this return value and handle the failure properly with necessary
cleanups or rollbacks.
Signed-off-by: Zhaoyang Yu <2426767509@qq.com>
Link: https://patch.msgid.link/tencent_46693FE6DB434ACFB7412B16F6078AC01A06@qq.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On X1E80100, when we connect a USB4 capable dock, the PARTNER_FLAGS
indicate USB4_GEN3 being set whilst keeping the PARTNER_FLAGS_USB
cleared. Due to this, during ucsi_partner_change call, the usb role
is marked as ROLE_NONE and passed to DWC3 controller the same way.
Fix this by adding UCSI_USB4_IMPLIES_USB quirk and check for it to
decide and pass on proper ROLE information to DWC3 layer.
Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260312101431.2375709-1-krishna.kurapati@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function itself, if it has to wait to perform
IO, use interruptible sleep. Hence the sleep needed
to avoid the write code path racing with itself should also
use interruptible sleep.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260312094619.1590556-2-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver saves the minor number it gets upon registration
in its descriptor for debugging purposes. However, there is
inevitably a window between registration and saving the correct
minor in a descriptor. During this window the debugging output
will be wrong.
As wrong debug output is worse than no debug output, just
remove it.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260312094619.1590556-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A UAS device can in principle contain multiple busses.
A reset on the USB level will reset them all. We
cannot reset a single bus.
In practical terms this does not matter, as only
one method of reset is implemented, but we should
not lie.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260312123435.2015029-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert kzalloc_obj(s) to kzalloc_flex to save an allocation.
Add __counted_by to get extra runtime analysis. Move counting variable
assignment immediately after allocation as required by __counted_by.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260313003456.124270-1-rosenp@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Removes one allocation and one free by using a flexible array member.
Also added __counted_by for extra runtime analysis.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260311232043.18025-1-rosenp@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Driver core holds a reference to the USB device while it is bound to a
driver and there is no need to take additional references unless the
structure is needed after disconnect.
Drop the redundant device reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260305133851.2952-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Driver core holds a reference to the USB device while it is bound to a
driver and there is no need to take additional references unless the
structure is needed after disconnect.
Drop the redundant device reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
Link: https://patch.msgid.link/20260305133851.2952-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use a safer function strscpy() instead of strcpy() for copying to
arrays.
Only idiomatic code replacement, and no functional changes.
Signed-off-by: Ai Chao <aichao@kylinos.cn>
Signed-off-by: Johan Hovold <johan@kernel.org>
The Blackbox 724-746-5500 USB Director USB-RS-232 HUB, part number
IC135A, is a rebadged Edgeport/4 with its own USB device id.
Signed-off-by: Frej Drejhammar <frej@stacken.kth.se>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
Add USB_QUIRK_NO_BOS for ezcap401 capture card, without it dmesg will show
"unable to get BOS descriptor or descriptor too short" and "unable to
read config index 0 descriptor/start: -71" errors and device will not
able to work at full speed at 10gbs
Signed-off-by: Vyacheslav Vahnenko <vahnenko2003@gmail.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260313123638.20481-1-vahnenko2003@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb_role_switch_is_parent() was walking up to the parent node and checking
for the "usb-role-switch" property regardless of the type of the passed
fwnode. This could cause unrelated device nodes to be probed as potential
role switch parent, leading to spurious matches and "-EPROBE_DEFER" being
returned infinitely.
Till now only Type-B connector node will have a parent node which may
present "usb-role-switch" property and register the role switch device.
For Type-C connector node, its parent node will always be a Type-C chip
device which will never register the role switch device. However, it may
still present a non-boolean "usb-role-switch = <&usb_controller>" property
for historical compatibility.
So restrict the helper to only operate on Type-B connector when attempting
to get the role switch from parent node.
Fixes: 6fadd72943 ("usb: roles: get usb-role-switch from parent")
Cc: stable <stable@kernel.org>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Tested-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260309074313.2809867-3-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 1366cd228b.
The fwnode_usb_role_switch_get() returns NULL only if no connection is
found, returns ERR_PTR(-EPROBE_DEFER) if connection is found but deferred
probe is needed, or a valid pointer of usb_role_switch.
When switching from a NULL check to IS_ERR_OR_NULL(), usb_role_switch_get()
returns NULL and overwrites the ERR_PTR(-EPROBE_DEFER) returned by
fwnode_usb_role_switch_get(). This causes the deferred probe indication to
be lost, preventing the USB role switch from ever being retrieved.
Fixes: 1366cd228b ("tcpm: allow looking for role_sw device in the main node")
Cc: stable <stable@kernel.org>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Tested-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260309074313.2809867-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The network device outlived its parent gadget device during
disconnection, resulting in dangling sysfs links and null pointer
dereference problems.
A prior attempt to solve this by removing SET_NETDEV_DEV entirely [1]
was reverted due to power management ordering concerns and a NO-CARRIER
regression.
A subsequent attempt to defer net_device allocation to bind [2] broke
1:1 mapping between function instance and network device, making it
impossible for configfs to report the resolved interface name. This
results in a regression where the DHCP server fails on pmOS.
Use device_move to reparent the net_device between the gadget device and
/sys/devices/virtual/ across bind/unbind cycles. This preserves the
network interface across USB reconnection, allowing the DHCP server to
retain their binding.
Introduce gether_attach_gadget()/gether_detach_gadget() helpers and use
__free(detach_gadget) macro to undo attachment on bind failure. The
bind_count ensures device_move executes only on the first bind.
[1] https://lore.kernel.org/lkml/f2a4f9847617a0929d62025748384092e5f35cce.camel@crapouillou.net/
[2] https://lore.kernel.org/linux-usb/795ea759-7eaf-4f78-81f4-01ffbf2d7961@ixit.cz/
Fixes: 40d133d7f5 ("usb: gadget: f_ncm: convert to new function interface with backward compatibility")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260309-f-ncm-revert-v2-7-ea2afbc7d9b2@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit e065c6a7e4.
This commit is being reverted as part of a series-wide revert.
By deferring the net_device allocation to the bind() phase, a single
function instance will spawn multiple network devices if it is symlinked
to multiple USB configurations.
This causes regressions for userspace tools (like the postmarketOS DHCP
daemon) that rely on reading the interface name (e.g., "usb0") from
configfs. Currently, configfs returns the template "usb%d", causing the
userspace network setup to fail.
Crucially, because this patch breaks the 1:1 mapping between the
function instance and the network device, this naming issue cannot
simply be patched. Configfs only exposes a single 'ifname' attribute per
instance, making it impossible to accurately report the actual interface
name when multiple underlying network devices can exist for that single
instance.
All configurations tied to the same function instance are meant to share
a single network device. Revert this change to restore the 1:1 mapping
by allocating the network device at the instance level (alloc_inst).
Reported-by: David Heidelberg <david@ixit.cz>
Closes: https://lore.kernel.org/linux-usb/70b558ea-a12e-4170-9b8e-c951131249af@ixit.cz/
Fixes: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260309-f-ncm-revert-v2-6-ea2afbc7d9b2@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 7a7930c0f9.
This commit is being reverted as part of a series-wide revert.
By deferring the net_device allocation to the bind() phase, a single
function instance will spawn multiple network devices if it is symlinked
to multiple USB configurations.
This causes regressions for userspace tools (like the postmarketOS DHCP
daemon) that rely on reading the interface name (e.g., "usb0") from
configfs. Currently, configfs returns the template "usb%d", causing the
userspace network setup to fail.
Crucially, because this patch breaks the 1:1 mapping between the
function instance and the network device, this naming issue cannot
simply be patched. Configfs only exposes a single 'ifname' attribute per
instance, making it impossible to accurately report the actual interface
name when multiple underlying network devices can exist for that single
instance.
All configurations tied to the same function instance are meant to share
a single network device. Revert this change to restore the 1:1 mapping
by allocating the network device at the instance level (alloc_inst).
Reported-by: David Heidelberg <david@ixit.cz>
Closes: https://lore.kernel.org/linux-usb/70b558ea-a12e-4170-9b8e-c951131249af@ixit.cz/
Fixes: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260309-f-ncm-revert-v2-5-ea2afbc7d9b2@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 0c0981126b.
This commit is being reverted as part of a series-wide revert.
By deferring the net_device allocation to the bind() phase, a single
function instance will spawn multiple network devices if it is symlinked
to multiple USB configurations.
This causes regressions for userspace tools (like the postmarketOS DHCP
daemon) that rely on reading the interface name (e.g., "usb0") from
configfs. Currently, configfs returns the template "usb%d", causing the
userspace network setup to fail.
Crucially, because this patch breaks the 1:1 mapping between the
function instance and the network device, this naming issue cannot
simply be patched. Configfs only exposes a single 'ifname' attribute per
instance, making it impossible to accurately report the actual interface
name when multiple underlying network devices can exist for that single
instance.
All configurations tied to the same function instance are meant to share
a single network device. Revert this change to restore the 1:1 mapping
by allocating the network device at the instance level (alloc_inst).
Reported-by: David Heidelberg <david@ixit.cz>
Closes: https://lore.kernel.org/linux-usb/70b558ea-a12e-4170-9b8e-c951131249af@ixit.cz/
Fixes: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260309-f-ncm-revert-v2-4-ea2afbc7d9b2@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 56a512a9b4.
This commit is being reverted as part of a series-wide revert.
By deferring the net_device allocation to the bind() phase, a single
function instance will spawn multiple network devices if it is symlinked
to multiple USB configurations.
This causes regressions for userspace tools (like the postmarketOS DHCP
daemon) that rely on reading the interface name (e.g., "usb0") from
configfs. Currently, configfs returns the template "usb%d", causing the
userspace network setup to fail.
Crucially, because this patch breaks the 1:1 mapping between the
function instance and the network device, this naming issue cannot
simply be patched. Configfs only exposes a single 'ifname' attribute per
instance, making it impossible to accurately report the actual interface
name when multiple underlying network devices can exist for that single
instance.
All configurations tied to the same function instance are meant to share
a single network device. Revert this change to restore the 1:1 mapping
by allocating the network device at the instance level (alloc_inst).
Reported-by: David Heidelberg <david@ixit.cz>
Closes: https://lore.kernel.org/linux-usb/70b558ea-a12e-4170-9b8e-c951131249af@ixit.cz/
Fixes: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260309-f-ncm-revert-v2-3-ea2afbc7d9b2@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit fde0634ad9.
This commit is being reverted as part of a series-wide revert.
By deferring the net_device allocation to the bind() phase, a single
function instance will spawn multiple network devices if it is symlinked
to multiple USB configurations.
This causes regressions for userspace tools (like the postmarketOS DHCP
daemon) that rely on reading the interface name (e.g., "usb0") from
configfs. Currently, configfs returns the template "usb%d", causing the
userspace network setup to fail.
Crucially, because this patch breaks the 1:1 mapping between the
function instance and the network device, this naming issue cannot
simply be patched. Configfs only exposes a single 'ifname' attribute per
instance, making it impossible to accurately report the actual interface
name when multiple underlying network devices can exist for that single
instance.
All configurations tied to the same function instance are meant to share
a single network device. Revert this change to restore the 1:1 mapping
by allocating the network device at the instance level (alloc_inst).
Reported-by: David Heidelberg <david@ixit.cz>
Closes: https://lore.kernel.org/linux-usb/70b558ea-a12e-4170-9b8e-c951131249af@ixit.cz/
Fixes: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260309-f-ncm-revert-v2-2-ea2afbc7d9b2@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 0d6c8144ca.
This commit is being reverted as part of a series-wide revert.
By deferring the net_device allocation to the bind() phase, a single
function instance will spawn multiple network devices if it is symlinked
to multiple USB configurations.
This causes regressions for userspace tools (like the postmarketOS DHCP
daemon) that rely on reading the interface name (e.g., "usb0") from
configfs. Currently, configfs returns the template "usb%d", causing the
userspace network setup to fail.
Crucially, because this patch breaks the 1:1 mapping between the
function instance and the network device, this naming issue cannot
simply be patched. Configfs only exposes a single 'ifname' attribute per
instance, making it impossible to accurately report the actual interface
name when multiple underlying network devices can exist for that single
instance.
All configurations tied to the same function instance are meant to share
a single network device. Revert this change to restore the 1:1 mapping
by allocating the network device at the instance level (alloc_inst).
Reported-by: David Heidelberg <david@ixit.cz>
Closes: https://lore.kernel.org/linux-usb/70b558ea-a12e-4170-9b8e-c951131249af@ixit.cz/
Fixes: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Cc: stable <stable@kernel.org>
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260309-f-ncm-revert-v2-1-ea2afbc7d9b2@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dp_altmode_configure sets the signaling rate to the current
configuration's rate and then shifts the value to the Select
Configuration bitfield. On the initial configuration, dp->data.conf
is 0 to begin with, so the signaling rate field is never set, which
leads to some DisplayPort Alt Mode partners sending NAK to the
Configure message.
Set the signaling rate to the capabilities supported by both the
port and the port partner. If the cable supports DisplayPort Alt Mode,
then include its capabilities as well.
Fixes: a17fae8fc3 ("usb: typec: Add Displayport Alternate Mode 2.1 Support")
Cc: stable <stable@kernel.org>
Signed-off-by: RD Babiera <rdbabiera@google.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260310204106.3939862-2-rdbabiera@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds the necessary PCI ID for Intel Nova Lake -H
devices.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: stable <stable@kernel.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260309130204.208661-1-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Similar to other Huawei LTE modules using this quirk, this version with
another vid/pid suffers from spurious wakeups.
Setting the quirk fixes the issue for this device as well.
Cc: stable <stable@kernel.org>
Signed-off-by: Christoffer Sandberg <cs@tuxedo.de>
Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Link: https://patch.msgid.link/20260306172817.2098898-1-wse@tuxedocomputers.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Michal reported and debgged a NULL pointer dereference bug in the
recently added portli debugfs files
Oops is caused when there are more port registers counted in
xhci->max_ports than ports reported by Supported Protocol capabilities.
This is possible if max_ports is more than maximum port number, or
if there are gaps between ports of different speeds the 'Supported
Protocol' capabilities.
In such cases port->rhub will be NULL so we can't reach xhci behind it.
Add an explicit NULL check for this case, and print portli in hex
without dereferencing port->rhub.
Reported-by: Michal Pecio <michal.pecio@gmail.com>
Closes: https://lore.kernel.org/linux-usb/20260304103856.48b785fd.michal.pecio@gmail.com
Fixes: 384c57ec72 ("usb: xhci: Add debugfs support for xHCI Port Link Info (PORTLI) register.")
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260304223639.3882398-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The xHCI controller reports a Host Controller Error (HCE) in UAS Storage
Device plug/unplug scenarios on Android devices. HCE is checked in
xhci_irq() function and causes an interrupt storm (since the interrupt
isn’t cleared), leading to severe system-level faults.
When the xHC controller reports HCE in the interrupt handler, the driver
only logs a warning and assumes xHC activity will stop as stated in xHCI
specification. An interrupt storm does however continue on some hosts
even after HCE, and only ceases after manually disabling xHC interrupt
and stopping the controller by calling xhci_halt().
Add xhci_halt() to xhci_irq() function where STS_HCE status is checked,
mirroring the existing error handling pattern used for STS_FATAL errors.
This only fixes the interrupt storm. Proper HCE recovery requires resetting
and re-initializing the xHC.
CC: stable@vger.kernel.org
Signed-off-by: Dayu Jiang <jiangdayu@xiaomi.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260304223639.3882398-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xhci_alloc_command() allocates a command structure and, when the
second argument is true, also allocates a completion structure.
Currently, the error handling path in xhci_disable_slot() only frees
the command structure using kfree(), causing the completion structure
to leak.
Use xhci_free_command() instead of kfree(). xhci_free_command() correctly
frees both the command structure and the associated completion structure.
Since the command structure is allocated with zero-initialization,
command->in_ctx is NULL and will not be erroneously freed by
xhci_free_command().
This bug was found using an experimental static analysis tool we are
developing. The tool is based on the LLVM framework and is specifically
designed to detect memory management issues. It is currently under
active development and not yet publicly available, but we plan to
open-source it after our research is published.
The bug was originally detected on v6.13-rc1 using our static analysis
tool, and we have verified that the issue persists in the latest mainline
kernel.
We performed build testing on x86_64 with allyesconfig using GCC=11.4.0.
Since triggering these error paths in xhci_disable_slot() requires specific
hardware conditions or abnormal state, we were unable to construct a test
case to reliably trigger these specific error paths at runtime.
Fixes: 7faac1953e ("xhci: avoid race between disable slot command and host runtime suspend")
CC: stable@vger.kernel.org
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260304223639.3882398-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Quoting the bug report:
Due to compiler optimization or CPU out-of-order execution, the
desc->length update can be reordered before the memmove. If this
happens, wdm_read() can see the new length and call copy_to_user() on
uninitialized memory. This also violates LKMM data race rules [1].
Fix it by using WRITE_ONCE and memory barriers.
Fixes: afba937e54 ("USB: CDC WDM driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Closes: https://lore.kernel.org/linux-usb/CALbr=LbrUZn_cfp7CfR-7Z5wDTHF96qeuM=3fO2m-q4cDrnC4A@mail.gmail.com/
Reported-by: Gui-Dong Han <hanguidong02@gmail.com>
Reviewed-by: Gui-Dong Han <hanguidong02@gmail.com>
Link: https://patch.msgid.link/20260304130116.1721682-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In usbhs_remove(), the driver frees resources (including the pipe array)
while the interrupt handler (usbhs_interrupt) is still registered. If an
interrupt fires after usbhs_pipe_remove() but before the driver is fully
unbound, the ISR may access freed memory, causing a use-after-free.
Fix this by calling devm_free_irq() before freeing resources. This ensures
the interrupt handler is both disabled and synchronized (waits for any
running ISR to complete) before usbhs_pipe_remove() is called.
Fixes: f1407d5c66 ("usb: renesas_usbhs: Add Renesas USBHS common code")
Cc: stable <stable@kernel.org>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Link: https://patch.msgid.link/20260303073344.34577-1-fanwu01@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The CH343 USB/serial adapter is as buggy as it is popular (very).
One of its quirks is that despite being capable of signalling a
BREAK condition, it doesn't advertise it.
This used to work nonetheless until 66aad7d8d3 ("usb: cdc-acm:
return correct error code on unsupported break") applied some
reasonable restrictions, preventing breaks from being emitted on
devices that do not advertise CAP_BRK.
Add a quirk for this particular device, so that breaks can still
be produced on some of my machines attached to my console server.
Fixes: 66aad7d8d3 ("usb: cdc-acm: return correct error code on unsupported break")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable <stable@kernel.org>
Cc: Oliver Neukum <oneukum@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260301124440.1192752-1-maz@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The `check_command_size_in_blocks()` function calculates the data size
in bytes by left shifting `common->data_size_from_cmnd` by the block
size (`common->curlun->blkbits`). However, it does not validate whether
this shift operation will cause an integer overflow.
Initially, the block size is set up in `fsg_lun_open()` , and the
`common->data_size_from_cmnd` is set up in `do_scsi_command()`. During
initialization, there is no integer overflow check for the interaction
between two variables.
So if a malicious USB host sends a SCSI READ or WRITE command
requesting a large amount of data (`common->data_size_from_cmnd`), the
left shift operation can wrap around. This results in a truncated data
size, which can bypass boundary checks and potentially lead to memory
corruption or out-of-bounds accesses.
Fix this by using the check_shl_overflow() macro to safely perform the
shift and catch any overflows.
Fixes: 144974e7f9 ("usb: gadget: mass_storage: support multi-luns with different logic block size")
Signed-off-by: Seungjin Bae <eeodqql09@gmail.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20260228104324.1696455-2-eeodqql09@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When adding dynamic configuration for bInterval, the value was removed
from the static SuperSpeed endpoint descriptors but was not set from the
configured value in hidg_bind(). Thus at SuperSpeed the interrupt
endpoints have bInterval as zero which is not valid per the USB
specification.
Add the missing setting for SuperSpeed endpoints.
Fixes: ea34925f5b ("usb: gadget: hid: allow dynamic interval configuration via configfs")
Cc: stable <stable@kernel.org>
Signed-off-by: John Keeping <jkeeping@inmusicbrands.com>
Acked-by: Peter Korsgaard <peter@korsgaard.com>
Link: https://patch.msgid.link/20260227111540.431521-1-jkeeping@inmusicbrands.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some USB devices incorrectly report bNumConfigurations as 0 in their
device descriptor, which causes the USB core to reject them during
enumeration.
logs:
usb 1-2: device descriptor read/64, error -71
usb 1-2: no configurations
usb 1-2: can't read configurations, error -22
However, these devices actually work correctly when
treated as having a single configuration.
Add a new quirk USB_QUIRK_FORCE_ONE_CONFIG to handle such devices.
When this quirk is set, assume the device has 1 configuration instead
of failing with -EINVAL.
This quirk is applied to the device with VID:PID 5131:2007 which
exhibits this behavior.
Signed-off-by: Jie Deng <dengjie03@kylinos.cn>
Link: https://patch.msgid.link/20260227084931.1527461-1-dengjie03@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If get_1284_register() fails, the usb device reference count is
incorrect and needs to be properly dropped before returning. That will
happen when the kref is dropped in the call to destroy_priv(), so jump
to that error path instead of returning directly.
Cc: stable <stable@kernel.org>
Assisted-by: gkh_clanker_2000
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/2026022342-smokiness-stove-d792@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usb_control_msg(), usb_bulk_msg(), and usb_interrupt_msg() APIs in
usbcore allow unlimited timeout durations. And since they use
uninterruptible waits, this leaves open the possibility of hanging a
task for an indefinitely long time, with no way to kill it short of
unplugging the target device.
To prevent this sort of problem, enforce a maximum limit on the length
of these unkillable timeouts. The limit chosen here, somewhat
arbitrarily, is 60 seconds. On many systems (although not all) this
is short enough to avoid triggering the kernel's hung-task detector.
In addition, clear up the ambiguity of negative timeout values by
treating them the same as 0, i.e., using the maximum allowed timeout.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/linux-usb/3acfe838-6334-4f6d-be7c-4bb01704b33d@rowland.harvard.edu/
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
CC: stable@vger.kernel.org
Link: https://patch.msgid.link/15fc9773-a007-47b0-a703-df89a8cf83dd@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The synchronous message API in usbcore (usb_control_msg(),
usb_bulk_msg(), and so on) uses uninterruptible waits. However,
drivers may call these routines in the context of a user thread, which
means it ought to be possible to at least kill them.
For this reason, introduce a new usb_bulk_msg_killable() function
which behaves the same as usb_bulk_msg() except for using
wait_for_completion_killable_timeout() instead of
wait_for_completion_timeout(). The same can be done later for
usb_control_msg() later on, if it turns out to be needed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Suggested-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/linux-usb/3acfe838-6334-4f6d-be7c-4bb01704b33d@rowland.harvard.edu/
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
CC: stable@vger.kernel.org
Link: https://patch.msgid.link/248628b4-cc83-4e81-a620-3ce4e0376d41@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove the error path from the usb_phy_roothub_set_mode() function.
The code is clearly wrong, because phy_set_mode() calls can't be
balanced with phy_power_off() calls.
Additionally, the usb_phy_roothub_set_mode() function is called only
from usb_add_hcd() before it powers on the PHYs, so powering off those
makes no sense anyway.
Presumably, the code is copy-pasted from the phy_power_on() function
without adjusting the error handling.
Cc: stable@vger.kernel.org # v5.1+
Fixes: b97a313483 ("usb: core: comply to PHY framework")
Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20260218-usb-phy-poweroff-fix-v1-1-66e6831e860e@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support for responding to Sink Cap Extended msg request. To achieve
this, include parsing support for DT properties related to Sink Cap
Extended. The request for Sink Cap Ext is a control message while the
response is an extended message (chunked). As the Sink Caps Extended
Data Block size (24 Byte) is less than MaxExtendedMsgChunkLen (26 Byte),
a single chunk is sufficient to complete this AMS.
Supporting sink cap extended messages while responding to a
Get_Sink_Caps_Extended request when port is in Sink role is required in
order to be compliant with at least USB PD Rev3.1 Ver1.8.
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260223-skedb-v2-2-60675765bc7e@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Move VID field to chip info to accommodate different VIDs.
Add chip info for Etek Micro ET7304. ET7304 is functionally
identical to the Richtek RT1715, with the only difference
being the VID.
Signed-off-by: Yuanshen Cao <alex.caoys@gmail.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260220-et7304-v3-2-ede2d9634957@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use a safer function strscpy() instead of strcpy() for copying to
arrays.
Only idiomatic code replacement, and no functional changes.
Signed-off-by: Ai Chao <aichao@kylinos.cn>
Link: https://patch.msgid.link/20260310094434.3639602-7-aichao@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use a safer function strscpy() instead of strcpy() for copying to
arrays.
Only idiomatic code replacement, and no functional changes.
Signed-off-by: Ai Chao <aichao@kylinos.cn>
Link: https://patch.msgid.link/20260310094434.3639602-6-aichao@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use a safer function strscpy() instead of strcpy() for copying to
arrays.
Only idiomatic code replacement, and no functional changes.
Signed-off-by: Ai Chao <aichao@kylinos.cn>
Link: https://patch.msgid.link/20260310094434.3639602-5-aichao@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use a safer function strscpy() instead of strcpy() for copying to
arrays.
Only idiomatic code replacement, and no functional changes.
Signed-off-by: Ai Chao <aichao@kylinos.cn>
Link: https://patch.msgid.link/20260310094434.3639602-4-aichao@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use a safer function strscpy() instead of strcpy() for copying to
arrays.
Only idiomatic code replacement, and no functional changes.
Signed-off-by: Ai Chao <aichao@kylinos.cn>
Link: https://patch.msgid.link/20260310094434.3639602-3-aichao@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use a safer function strscpy() instead of strcpy() for copying to
arrays.
Only idiomatic code replacement, and no functional changes.
Signed-off-by: Ai Chao <aichao@kylinos.cn>
Link: https://patch.msgid.link/20260310094434.3639602-2-aichao@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some devices use combo PHYs (i.e. USB3 + DisplayPort), which also
handle the lane muxing. These PHYs are referenced twice from
the USB-C connector (USB super-speed lines and SBU/AUX lines)
resulting in the mux being configured twice. Avoid this by
dropping duplicates.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260223-typec-mux-duplication-fix-v2-2-0402fefc222e@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some devices use combo PHYs (i.e. USB3 + DisplayPort), which also
handle the orientation mux. These PHYs are referenced twice from
the USB-C connector (USB super-speed lines and SBU/AUX lines)
resulting in the switch being configured twice. Avoid this by
dropping duplicates.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260223-typec-mux-duplication-fix-v2-1-0402fefc222e@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The variable tps->partner is checked for an error pointer and then if it
is, it sends an error message but does not return and then immediately
dereferenced a few lines below:
tps->partner = typec_register_partner(tps->port, &desc);
if (IS_ERR(tps->partner))
dev_warn(tps->dev, "%s: failed to register partnet\n", __func__);
if (desc.identity) {
typec_partner_set_identity(tps->partner);
cd321x->cur_partner_identity = st.partner_identity;
}
Add early return and fix spelling mistake in error message.
Detected by Smatch:
drivers/usb/typec/tipd/core.c:827 cd321x_update_work() error:
'tps->partner' dereferencing possible ERR_PTR()
Fixes: 82432bbfb9 ("usb: typec: tipd: Handle mode transitions for CD321x")
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260218214621.38154-1-ethantidmore06@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
File-scope 'tcpci_pm_ops' is not used outside of this unit, so make it
static to silence sparse warning:
tcpm/tcpci.c:1002:1: warning: symbol 'tcpci_pm_ops' was not declared. Should it be static?
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://patch.msgid.link/20260216110403.159945-2-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The ucsi_run_command trace event is exposed in tracefs, but it never
produces any output because the UCSI core never invokes the associated
tracepoint. As a result, enabling the event under events/ucsi/ yields
no traces, preventing users from inspecting UCSI command sequencing.
Wire the tracepoint into the UCSI command path so that commands are
properly reported.
Example:
50.692342: ucsi_run_command: GET_CONNECTOR_STATUS -> OK (err=0)
50.692345: ucsi_connector_change: port0 status: change=4800, ...
51.750298: ucsi_run_command: GET_CABLE_PROPERTY -> FAIL (err=-5)
51.773360: ucsi_run_command: GET_CONNECTOR_STATUS -> OK (err=0)
Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260217103403.1956-1-loic.poulain@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Smatch warns that __dwc3_gadget_kick_transfer() might be missing an
error code when returning 'ret' at line 1691.
While 'ret' is guaranteed to be 0 at this point, returning an explicit 0
improves readability by removing a level of indirection and clarifies
the intent that this is a successful "no-op" path. This change also
silences the Smatch warning.
Suggested-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Zeeshan Ahmad <zeeshanahmad022019@gmail.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260306090643.47383-1-zeeshanahmad022019@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The platform_get_irq_byname_optional() function returns a non-zero
IRQ number on success and a negative error code on failure. It
never returns zero.
The current implementation in the modern dwc3-qcom driver checks for
a return value less than or equal to zero. Since zero is not a
valid return value, simplify the check to only look for negative
error codes. This aligns the logic with the standard return contract
of the platform IRQ APIs.
Signed-off-by: Zeeshan Ahmad <zeeshanahmad022019@gmail.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260225065157.8952-1-zeeshanahmad022019@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Driver core holds a reference to the USB interface and its parent USB
device while the interface is bound to a driver and there is no need to
take additional references unless the structures are needed after
disconnect.
Drop the redundant device reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260305111511.18386-6-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Driver core holds a reference to the USB interface and its parent USB
device while the interface is bound to a driver and there is no need to
take additional references unless the structures are needed after
disconnect.
Drop the redundant device reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260305111511.18386-5-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Driver core holds a reference to the USB interface while it is bound to
a driver and there is no need to take another reference unless the
interface is needed after disconnect.
Drop the redundant interface reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://patch.msgid.link/20260305111511.18386-4-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Driver core holds a reference to the USB interface and its parent USB
device while the interface is bound to a driver and there is no need to
take additional references unless the structures are needed after
disconnect.
Drop the redundant device reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260305111511.18386-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Driver core holds a reference to the USB interface and its parent USB
device while the interface is bound to a driver and there is no need to
take additional references unless the structures are needed after
disconnect.
Drop the redundant device reference to reduce cargo culting, make it
easier to spot drivers where an extra reference is needed, and reduce
the risk of memory leaks when drivers fail to release it.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260305111511.18386-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It should be 'HighSpeed' instead of 'HishSpeed'.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260304113916.856841-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add '*' to needs_full_reinit comment line to fix a kernel-doc issue.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://patch.msgid.link/20260304113916.856841-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support to use fusb302 based USB-C connectors with the DP altmode
helper code on devicetree based platforms. To get this working there
must be a DRM bridge chain from the DisplayPort controller to the USB-C
connector. E.g. on Rockchip RK3576:
root@rk3576 # cat /sys/kernel/debug/dri/0/encoder-0/bridges
bridge[0]: dw_dp_bridge_funcs
refcount: 7
type: [10] DP
OF: /soc/dp@27e40000:rockchip,rk3576-dp
ops: [0x47] detect edid hpd
bridge[1]: drm_aux_bridge_funcs
refcount: 4
type: [0] Unknown
OF: /soc/phy@2b010000:rockchip,rk3576-usbdp-phy
ops: [0x0]
bridge[2]: drm_aux_hpd_bridge_funcs
refcount: 5
type: [10] DP
OF: /soc/i2c@2ac50000/typec-portc@22/connector:usb-c-connector
ops: [0x4] hpd
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260310-fusb302-drm-dp-hpd-bridge-v1-1-ffd41ef9afe3@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Simplifies allocation and allows using __counted_by for extra runtime
analysis.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://patch.msgid.link/20260306031639.46942-1-rosenp@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Microchip USB3340x ULPI PHY requires a delay when switching to the
high-speed transmitter. See:
http://ww1.microchip.com/downloads/en/DeviceDoc/80000645A.pdf
Module 2 "Device Enumeration Failure with Link IP Systems"
For details on the behavior and fix, refer to the AMD (formerly Xilinx)
forum post: "USB stuck in full speed mode with USB3340 ULPI PHY, ZynqMP."
This patch uses the USB PHY Vendor-ID and Product-ID to detect the
USB3340 PHY and then applies the necessary fix if this PHY is found.
Signed-off-by: Ingo Rohloff <ingo.rohloff@lauterbach.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260305121452.54082-2-ingo.rohloff@lauterbach.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add a regulator-only entry matching OF-described USB Type-A connectors.
This allows platforms to explicitly model VBUS supply regulators for these
ports instead of calling them PHY supplies or making the respective
regulators always-on in their device trees.
Type-A ports won't typically need a dedicated driver, as there is nothing
to configure apart from the power supply, so there is no controller driver
to traverse the OF graph and request the VBUS regulator, unlike for Type-C
ports. Thus make it an onboard USB device, which it kind of really is.
Signed-off-by: Alexey Charkov <alchark@flipper.net>
Link: https://patch.msgid.link/20260217-typea-vbus-v1-1-657b4e55a4c2@flipper.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since the USB core code handles the generic USB PHYs automatically, the
optional PHY handling code has been removed from the 'ehci-orion' driver
entirely by commit e04585184d ("usb: ehci-orion: avoid double PHY
initialization"). However, the devm_phy_optional_get() call has been kept
so the driver still gets the PHY even though it is not used for anything
in the driver.
Drop the remaining code, and also remove the 'phy' member of the
'orion_ehci_hcd' structure to simplify the code.
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Gabor Juhos <j4g8y7@gmail.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://patch.msgid.link/20260221-ehci-orion-drop-phy-handling-v2-1-5e26aa73790b@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As the PHY subsystem already synchronizes concurrent accesses to a PHY
instance with a core-internal mutex remove the driver specific mutex
synchronization.
Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Link: https://patch.msgid.link/20260127-diogo-tegra_phy-v2-2-787b9eed3ed5@tecnico.ulisboa.pt
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This has us use the driver's completion preference by default. There is
no behavior changes with this patch and we queue completion to LIO's
completion workqueue by default.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Link: https://patch.msgid.link/20260222232946.7637-3-michael.christie@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The i.MX USB glue and DWC3 core are closely coupled. Describe the i.MX
USB block in a single block will bring more benefits than a parent-
child relation. To support the flatten model devicetree, DWC3 USB core
driver already support to directly register and initialize the core in
glue layer using one device. And many notification can be received in
glue layer timely and proper actions can be executed accordingly.
To align with mainstream, introduce a new driver to support flatten dwc3
devicetree model for i.MX Soc. Besides this driver disables wakeup irq
when system is active, no other function change in this version compared
to dwc3-imx8mp.c. After this new driver is settled, only maintenance
fixes will be added to dwc3-imx8mp.c, new features will only be added
to this new driver. Once all users switch to this new one, the legacy
driver will be removed at proper time.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260212-add-flatten-dts-based-dwc3-imx-driver-v5-3-ff04a75ce221@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The current design assumes that the controller remains powered when wakeup
is enabled. However, some SoCs provide wakeup capability even when the
controller itself is powered down, using separate dedicated wakeup logic.
This allows additional power savings, but requires the controller to be
fully re‑initialized after system resume.
To support these SoCs, introduce a flag needs_full_reinit for the purpose.
And the glue layer needs to indicate if the controller needs this behavior
by setting a same flag needs_full_reinit in dwc3_properties.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260212-add-flatten-dts-based-dwc3-imx-driver-v5-2-ff04a75ce221@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mdc800_device_read() submits download_urb and waits for completion.
If the timeout fires and the device has not responded, the function
returns without killing the URB, leaving it active.
A subsequent read() resubmits the same URB while it is still
in-flight, triggering the WARN in usb_submit_urb():
"URB submitted while active"
Check the return value of wait_event_timeout() and kill the URB if
it indicates timeout, ensuring the URB is complete before its status
is inspected or the URB is resubmitted.
Similar to
- commit 372c931319 ("USB: yurex: fix control-URB timeout handling")
- commit b98d5000c5 ("media: rc: iguanair: handle timeouts")
Signed-off-by: Ziyi Guo <n7l8m4@u.northwestern.edu>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260209151937.2247202-1-n7l8m4@u.northwestern.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If a signal arrives after a read has partially completed,
we need to return the number of bytes read. -EINTR is correct
only if that number is zero.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/20260209142048.1503791-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The bbu member of the descriptor must be set to the value
standing for uninitialized values before the URB whose
completion handler sets bbu is submitted. Otherwise there is
a window during which probing can overwrite already retrieved
data.
Cc: stable <stable@kernel.org>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20260209143720.1507500-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The ncm_set_alt function was holding a mutex to protect against races
with configfs, which invokes the might-sleep function inside an atomic
context.
Remove the struct net_device pointer from the f_ncm_opts structure to
eliminate the contention. The connection state is now managed by a new
boolean flag to preserve the use-after-free fix from
commit 6334b8e455 ("usb: gadget: f_ncm: Fix UAF ncm object at re-bind
after usb ep transport error").
BUG: sleeping function called from invalid context
Call Trace:
dump_stack_lvl+0x83/0xc0
dump_stack+0x14/0x16
__might_resched+0x389/0x4c0
__might_sleep+0x8e/0x100
...
__mutex_lock+0x6f/0x1740
...
ncm_set_alt+0x209/0xa40
set_config+0x6b6/0xb40
composite_setup+0x734/0x2b40
...
Fixes: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Cc: stable@kernel.org
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260221-legacy-ncm-v2-2-dfb891d76507@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle
with bind/unbind") deferred the allocation of the net_device. This
change leads to a NULL pointer dereference in the legacy NCM driver as
it attempts to access the net_device before it's fully instantiated.
Store the provided qmult, host_addr, and dev_addr into the struct
ncm_opts->net_opts during gncm_bind(). These values will be properly
applied to the net_device when it is allocated and configured later in
the binding process by the NCM function driver.
Fixes: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Cc: stable@kernel.org
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202602181727.fd76c561-lkp@intel.com
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20260221-legacy-ncm-v2-1-dfb891d76507@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The `tpg->tpg_nexus` pointer in the USB Target driver is dynamically
managed and tied to userspace configuration via ConfigFS. It can be
NULL if the USB host sends requests before the nexus is fully
established or immediately after it is dropped.
Currently, functions like `bot_submit_command()` and the data
transfer paths retrieve `tv_nexus = tpg->tpg_nexus` and immediately
dereference `tv_nexus->tvn_se_sess` without any validation. If a
malicious or misconfigured USB host sends a BOT (Bulk-Only Transport)
command during this race window, it triggers a NULL pointer
dereference, leading to a kernel panic (local DoS).
This exposes an inconsistent API usage within the module, as peer
functions like `usbg_submit_command()` and `bot_send_bad_response()`
correctly implement a NULL check for `tv_nexus` before proceeding.
Fix this by bringing consistency to the nexus handling. Add the
missing `if (!tv_nexus)` checks to the vulnerable BOT command and
request processing paths, aborting the command gracefully with an
error instead of crashing the system.
Fixes: c52661d60f ("usb-gadget: Initial merge of target module for UASP + BOT")
Cc: stable <stable@kernel.org>
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Reviewed-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260219023834.17976-1-jiashengjiangcool@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Several USB capture devices also need the USB_QUIRK_NO_BOS set for them
to work properly, odds are they are all the same chip inside, just
different vendor/product ids.
This fixes up:
- ASUS TUF 4K PRO
- Avermedia Live Gamer Ultra 2.1 (GC553G2)
- UGREEN 35871
to now run at full speed (10 Gbps/4K 60 fps mode.)
Link: https://lore.kernel.org/r/CACy+XB-f-51xGpNQFCSm5pE_momTQLu=BaZggHYU1DiDmFX=ug@mail.gmail.com
Cc: stable <stable@kernel.org>
Signed-off-by: A1RM4X <dev@a1rm4x.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This converts some of the visually simpler cases that have been split
over multiple lines. I only did the ones that are easy to verify the
resulting diff by having just that final GFP_KERNEL argument on the next
line.
Somebody should probably do a proper coccinelle script for this, but for
me the trivial script actually resulted in an assertion failure in the
middle of the script. I probably had made it a bit _too_ trivial.
So after fighting that far a while I decided to just do some of the
syntactically simpler cases with variations of the previous 'sed'
scripts.
The more syntactically complex multi-line cases would mostly really want
whitespace cleanup anyway.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is the exact same thing as the 'alloc_obj()' version, only much
smaller because there are a lot fewer users of the *alloc_flex()
interface.
As with alloc_obj() version, this was done entirely with mindless brute
force, using the same script, except using 'flex' in the pattern rather
than 'objs*'.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with: kmalloc_objs(TYPE, COUNT, ...)
Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)
(where TYPE may also be *VAR)
The resulting allocations no longer return "void *", instead returning
"TYPE *".
Signed-off-by: Kees Cook <kees@kernel.org>
Here is the "big" set of USB and Thunderbolt driver updates for 7.0-rc1.
Overall more lines were removed than added, thanks to dropping the
obsolete isp1362 USB host controller driver, always a nice change.
Other than that, nothing major happening here, highlights are:
- lots of dwc3 driver updates and new hardware support added
- usb gadget function driver updates
- usb phy driver updates
- typec driver updates and additions
- USB rust binding updates for syntax and formatting changes
- more usb serial device ids added
- other smaller USB core and driver updates and additions
All of these have been in linux-next for a long time, with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the "big" set of USB and Thunderbolt driver updates for
7.0-rc1. Overall more lines were removed than added, thanks to
dropping the obsolete isp1362 USB host controller driver, always a
nice change.
Other than that, nothing major happening here, highlights are:
- lots of dwc3 driver updates and new hardware support added
- usb gadget function driver updates
- usb phy driver updates
- typec driver updates and additions
- USB rust binding updates for syntax and formatting changes
- more usb serial device ids added
- other smaller USB core and driver updates and additions
All of these have been in linux-next for a long time, with no reported
problems"
* tag 'usb-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (77 commits)
usb: typec: ucsi: Add Thunderbolt alternate mode support
usb: typec: hd3ss3220: Check if regulator needs to be switched
usb: phy: tegra: parametrize PORTSC1 register offset
usb: phy: tegra: parametrize HSIC PTS value
usb: phy: tegra: return error value from utmi_wait_register
usb: phy: tegra: cosmetic fixes
dt-bindings: usb: renesas,usbhs: Add RZ/G3E SoC support
usb: dwc2: fix resume failure if dr_mode is host
usb: cdns3: fix role switching during resume
usb: dwc3: gadget: Move vbus draw to workqueue context
USB: serial: option: add Telit FN920C04 RNDIS compositions
usb: dwc3: Log dwc3 address in traces
usb: gadget: tegra-xudc: Add handling for BLCG_COREPLL_PWRDN
usb: phy: tegra: add HSIC support
usb: phy: tegra: use phy type directly
usb: typec: ucsi: Enforce mode selection for cros_ec_ucsi
usb: typec: ucsi: Support mode selection to activate altmodes
usb: typec: Introduce mode_selection bit
usb: typec: Implement mode selection
usb: typec: Expose alternate mode priority via sysfs
...
Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted
cleanups and fixes. The biggest core change is the massive code
motion in the sd driver to remove forward declarations and the most
significant change is to enumify the queuecommand return.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted
cleanups and fixes.
The biggest core change is the massive code motion in the sd driver to
remove forward declarations and the most significant change is to
enumify the queuecommand return"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (78 commits)
scsi: csiostor: Fix dereference of null pointer rn
scsi: buslogic: Reduce stack usage
scsi: ufs: host: mediatek: Require CONFIG_PM
scsi: ufs: mediatek: Fix page faults in ufs_mtk_clk_scale() trace event
scsi: smartpqi: Fix memory leak in pqi_report_phys_luns()
scsi: mpi3mr: Make driver probing asynchronous
scsi: ufs: core: Flush exception handling work when RPM level is zero
scsi: efct: Use IRQF_ONESHOT and default primary handler
scsi: ufs: core: Use a host-wide tagset in SDB mode
scsi: qla2xxx: target: Add WQ_PERCPU to alloc_workqueue() users
scsi: qla2xxx: Add WQ_PERCPU to alloc_workqueue() users
scsi: qla4xxx: Add WQ_PERCPU to alloc_workqueue() users
scsi: mpi3mr: Driver version update to 8.17.0.3.50
scsi: mpi3mr: Fixed the W=1 compilation warning
scsi: mpi3mr: Record and report controller firmware faults
scsi: mpi3mr: Update MPI Headers to revision 39
scsi: mpi3mr: Use negotiated link rate from DevicePage0
scsi: mpi3mr: Avoid redundant diag-fault resets
scsi: mpi3mr: Rename log data save helper to reflect threaded/BH context
scsi: mpi3mr: Add module parameter to control threaded IRQ polling
...
Total patches: 107
Reviews/patch: 1.07
Reviewed rate: 67%
- The 2 patch series "ocfs2: give ocfs2 the ability to reclaim
suballocator free bg" from Heming Zhao saves disk space by teaching
ocfs2 to reclaim suballocator block group space.
- The 4 patch series "Add ARRAY_END(), and use it to fix off-by-one
bugs" from Alejandro Colomar adds the ARRAY_END() macro and uses it in
various places.
- The 2 patch series "vmcoreinfo: support VMCOREINFO_BYTES larger than
PAGE_SIZE" from Pnina Feder makes the vmcore code future-safe, if
VMCOREINFO_BYTES ever exceeds the page size.
- The 7 patch series "kallsyms: Prevent invalid access when showing
module buildid" from Petr Mladek cleans up kallsyms code related to
module buildid and fixes an invalid access crash when printing
backtraces.
- The 3 patch series "Address page fault in
ima_restore_measurement_list()" from Harshit Mogalapalli fixes a
kexec-related crash that can occur when booting the second-stage kernel
on x86.
- The 6 patch series "kho: ABI headers and Documentation updates" from
Mike Rapoport updates the kexec handover ABI documentation.
- The 4 patch series "Align atomic storage" from Finn Thain adds the
__aligned attribute to atomic_t and atomic64_t definitions to get
natural alignment of both types on csky, m68k, microblaze, nios2,
openrisc and sh.
- The 2 patch series "kho: clean up page initialization logic" from
Pratyush Yadav simplifies the page initialization logic in
kho_restore_page().
- The 6 patch series "Unload linux/kernel.h" from Yury Norov moves
several things out of kernel.h and into more appropriate places.
- The 7 patch series "don't abuse task_struct.group_leader" from Oleg
Nesterov removes the usage of ->group_leader when it is "obviously
unnecessary".
- The 5 patch series "list private v2 & luo flb" from Pasha Tatashin
adds some infrastructure improvements to the live update orchestrator.
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Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves
disk space by teaching ocfs2 to reclaim suballocator block group
space (Heming Zhao)
- "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the
ARRAY_END() macro and uses it in various places (Alejandro Colomar)
- "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes
the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the
page size (Pnina Feder)
- "kallsyms: Prevent invalid access when showing module buildid" cleans
up kallsyms code related to module buildid and fixes an invalid
access crash when printing backtraces (Petr Mladek)
- "Address page fault in ima_restore_measurement_list()" fixes a
kexec-related crash that can occur when booting the second-stage
kernel on x86 (Harshit Mogalapalli)
- "kho: ABI headers and Documentation updates" updates the kexec
handover ABI documentation (Mike Rapoport)
- "Align atomic storage" adds the __aligned attribute to atomic_t and
atomic64_t definitions to get natural alignment of both types on
csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain)
- "kho: clean up page initialization logic" simplifies the page
initialization logic in kho_restore_page() (Pratyush Yadav)
- "Unload linux/kernel.h" moves several things out of kernel.h and into
more appropriate places (Yury Norov)
- "don't abuse task_struct.group_leader" removes the usage of
->group_leader when it is "obviously unnecessary" (Oleg Nesterov)
- "list private v2 & luo flb" adds some infrastructure improvements to
the live update orchestrator (Pasha Tatashin)
* tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits)
watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency
procfs: fix missing RCU protection when reading real_parent in do_task_stat()
watchdog/softlockup: fix sample ring index wrap in need_counting_irqs()
kcsan, compiler_types: avoid duplicate type issues in BPF Type Format
kho: fix doc for kho_restore_pages()
tests/liveupdate: add in-kernel liveupdate test
liveupdate: luo_flb: introduce File-Lifecycle-Bound global state
liveupdate: luo_file: Use private list
list: add kunit test for private list primitives
list: add primitives for private list manipulations
delayacct: fix uapi timespec64 definition
panic: add panic_force_cpu= parameter to redirect panic to a specific CPU
netclassid: use thread_group_leader(p) in update_classid_task()
RDMA/umem: don't abuse current->group_leader
drm/pan*: don't abuse current->group_leader
drm/amd: kill the outdated "Only the pthreads threading model is supported" checks
drm/amdgpu: don't abuse current->group_leader
android/binder: use same_thread_group(proc->tsk, current) in binder_mmap()
android/binder: don't abuse current->group_leader
kho: skip memoryless NUMA nodes when reserving scratch areas
...
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Merge tag 'pci-v7.0-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Don't try to enable Extended Tags on VFs since that bit is Reserved
and causes misleading log messages (Håkon Bugge)
- Initialize Endpoint Read Completion Boundary to match Root Port,
regardless of ACPI _HPX (Håkon Bugge)
- Apply _HPX PCIe Setting Record only to AER configuration, and only
when OS owns PCIe hotplug but not AER, to avoid clobbering Extended
Tag and Relaxed Ordering settings (Håkon Bugge)
Resource management:
- Move CardBus code to setup-cardbus.c and only build it when
CONFIG_CARDBUS is set (Ilpo Järvinen)
- Fix bridge window alignment with optional resources, where
additional alignment requirement was previously lost (Ilpo
Järvinen)
- Stop over-estimating bridge window size since they are now assigned
without any gaps between them (Ilpo Järvinen)
- Increase resource MAX_IORES_LEVEL to avoid /proc/iomem flattening
for nested bridges and endpoints (Ilpo Järvinen)
- Add pbus_mem_size_optional() to handle sizes of optional resources
(SR-IOV VF BARs, expansion ROMs, bridge windows) (Ilpo Järvinen)
- Don't claim disabled bridge windows to avoid spurious claim
failures (Ilpo Järvinen)
Driver binding:
- Fix device reference leak in pcie_port_remove_service() (Uwe
Kleine-König)
- Move pcie_port_bus_match() and pcie_port_bus_type to PCIe-specific
portdrv.c (Uwe Kleine-König)
- Convert portdrv to use pcie_port_bus_type.probe() and .remove()
callbacks so .probe() and .remove() can eventually be removed from
struct device_driver (Uwe Kleine-König)
Error handling:
- Clear stale errors on reporting agents upon probe so they don't
look like recent errors (Lukas Wunner)
- Add generic RAS tracepoint for hotplug events (Shuai Xue)
- Add RAS tracepoint for link speed changes (Shuai Xue)
Power management:
- Avoid redundant delay on transition from D3hot to D3cold if the
device was already in D3hot (Brian Norris)
- Prevent runtime suspend until devices are fully initialized to
avoid saving incompletely configured device state (Brian Norris)
Power control:
- Add power_on/off callbacks with generic signature to pwrseq,
tc9563, and slot drivers so they can be used by pwrctrl core
(Manivannan Sadhasivam)
- Add PCIe M.2 connector support to the slot pwrctrl driver
(Manivannan Sadhasivam)
- Switch to pwrctrl interfaces to create, destroy, and power on/off
devices, calling them from host controller drivers instead of the
PCI core (Manivannan Sadhasivam)
- Drop qcom .assert_perst() callbacks since this is now done by the
controller driver instead of the pwrctrl driver (Manivannan
Sadhasivam)
Virtualization:
- Remove an incorrect unlock in pci_slot_trylock() error handling
(Jinhui Guo)
- Lock the bridge device for slot reset (Keith Busch)
- Enable ACS after IOMMU configuration on OF platforms so ACS is
enabled an all devices; previously the first device enumerated
(typically a Root Port) didn't have ACS enabled (Manivannan
Sadhasivam)
- Disable ACS Source Validation for IDT 0x80b5 and 0x8090 switches to
work around hardware erratum; previously ACS SV was only
temporarily disabled, which worked for enumeration but not after
reset (Manivannan Sadhasivam)
Peer-to-peer DMA:
- Release per-CPU pgmap ref when vm_insert_page() fails to avoid hang
when removing the PCI device (Hou Tao)
- Remove incorrect p2pmem_alloc_mmap() warning about page refcount
(Hou Tao)
Endpoint framework:
- Add configfs sub-groups synchronously to avoid NULL pointer
dereference when racing with removal (Liu Song)
- Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink()
functions (Manikanta Maddireddy)
ASPEED PCIe controller driver:
- Add ASPEED Root Complex DT binding and driver (Jacky Chou)
Freescale i.MX6 PCIe controller driver:
- Add DT binding and driver support for an optional external refclock
in addition to the refclock from the internal PLL (Richard Zhu)
- Fix CLKREQ# control so host asserts it during enumeration and
Endpoints can use it afterwards to exit the L1.2 link state
(Richard Zhu)
NVIDIA Tegra PCIe controller driver:
- Export irq_domain_free_irqs() to allow PCI/MSI drivers that tear
down MSI domains to be built as modules (Aaron Kling)
- Allow pci-tegra to be built as a module (Aaron Kling)
NVIDIA Tegra194 PCIe controller driver:
- Relax Kconfig so tegra194 can be built for platforms beyond
Tegra194 (Vidya Sagar)
Qualcomm PCIe controller driver:
- Merge SC8180x DT binding into SM8150 (Krzysztof Kozlowski)
- Move SDX55, SDM845, QCS404, IPQ5018, IPQ6018, IPQ8074 Gen3,
IPQ8074, IPQ4019, IPQ9574, APQ8064, MSM8996, APQ8084 to dedicated
schema (Krzysztof Kozlowski)
- Add DT binding and driver support for SA8255p Endpoint being
configured by firmware (Mrinmay Sarkar)
- Parse PERST# from all PCIe bridge nodes for future platforms that
will have PERST# in Switch Downstream Ports as well as in Root
Ports (Manivannan Sadhasivam)
Renesas RZ/G3S PCIe controller driver:
- Use pci_generic_config_write() since the writability provided by
the custom wrapper is unnecessary (Claudiu Beznea)
SOPHGO PCIe controller driver:
- Disable ASPM L0s and L1 on Sophgo 2044 PCIe Root Ports (Inochi
Amaoto)
Synopsys DesignWare PCIe controller driver:
- Extend PCI_FIND_NEXT_CAP() and PCI_FIND_NEXT_EXT_CAP() to return a
pointer to the preceding Capability, to allow removal of
Capabilities that are advertised but not fully implemented (Qiang
Yu)
- Remove MSI and MSI-X Capabilities in platforms that can't support
them, so the PCI core automatically falls back to INTx (Qiang Yu)
- Add ASPM L1.1 and L1.2 Substates context to debugfs ltssm_status
for drivers that support this (Shawn Lin)
- Skip PME_Turn_Off broadcast and L2/L3 transition during suspend if
link is not up to avoid an unnecessary timeout (Manivannan
Sadhasivam)
- Revert dw-rockchip, qcom, and DWC core changes that used link-up
IRQs to trigger enumeration instead of waiting for link to be up
because the PCI core doesn't allocate bus number space for
hierarchies that might be attached (Niklas Cassel)
- Make endpoint iATU entry for MSI permanent instead of programming
it dynamically, which is slow and racy with respect to other
concurrent traffic, e.g., eDMA (Koichiro Den)
- Use iMSI-RX MSI target address when possible to fix endpoints using
32-bit MSI (Shawn Lin)
- Allow DWC host controller driver probe to continue if device is not
found or found but inactive; only fail when there's an error with
the link (Manivannan Sadhasivam)
- For controllers like NXP i.MX6QP and i.MX7D, where LTSSM registers
are not accessible after PME_Turn_Off, simply wait 10ms instead of
polling for L2/L3 Ready (Richard Zhu)
- Use multiple iATU entries to map large bridge windows and DMA
ranges when necessary instead of failing (Samuel Holland)
- Add EPC dynamic_inbound_mapping feature bit for Endpoint
Controllers that can update BAR inbound address translation without
requiring EPF driver to clear/reset the BAR first, and advertise it
for DWC-based Endpoints (Koichiro Den)
- Add EPC subrange_mapping feature bit for Endpoint Controllers that
can map multiple independent inbound regions in a single BAR,
implement subrange mapping, advertise it for DWC-based Endpoints,
and add Endpoint selftests for it (Koichiro Den)
- Make resizable BARs work for Endpoint multi-PF configurations;
previously it only worked for PF 0 (Aksh Garg)
- Fix Endpoint non-PF 0 support for BAR configuration, ATU mappings,
and Address Match Mode (Aksh Garg)
- Set up iATU when ECAM is enabled; previously IO and MEM outbound
windows weren't programmed, and ECAM-related iATU entries weren't
restored after suspend/resume, so config accesses failed (Krishna
Chaitanya Chundru)
Miscellaneous:
- Use system_percpu_wq and WQ_PERCPU to explicitly request per-CPU
work so WQ_UNBOUND can eventually be removed (Marco Crivellari)"
* tag 'pci-v7.0-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (176 commits)
PCI/bwctrl: Disable BW controller on Intel P45 using a quirk
PCI: Disable ACS SV for IDT 0x8090 switch
PCI: Disable ACS SV for IDT 0x80b5 switch
PCI: Cache ACS Capabilities register
PCI: Enable ACS after configuring IOMMU for OF platforms
PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404]
PCI: Add ACS quirk for Qualcomm Hamoa & Glymur
PCI: Use device_lock_assert() to verify device lock is held
PCI: Use lockdep_assert_held(pci_bus_sem) to verify lock is held
PCI: Fix pci_slot_lock () device locking
PCI: Fix pci_slot_trylock() error handling
PCI: Mark Nvidia GB10 to avoid bus reset
PCI: Mark ASM1164 SATA controller to avoid bus reset
PCI: host-generic: Avoid reporting incorrect 'missing reg property' error
PCI/PME: Replace RMW of Root Status register with direct write
PCI/AER: Clear stale errors on reporting agents upon probe
PCI: Don't claim disabled bridge windows
PCI: rzg3s-host: Fix device node reference leak in rzg3s_pcie_host_parse_port()
PCI: dwc: Fix missing iATU setup when ECAM is enabled
PCI: dwc: Clean up iATU index usage in dw_pcie_iatu_setup()
...
- Add the missing IRQF_COND_ONESHOT flag to devm_request_irq()
This is inconsistent vs. request_irq() and causes the same issues which
where addressed with the introduction of this flag
- Cleanup IRQF_ONESHOT and IRQF_NO_THREAD usage
Quite some drivers have inconsistent interrupt request flags related to
interrupt threading namely IRQF_ONESHOT and IRQF_NO_THREAD. This leads to
warnings and/or malfunction when forced interrupt threading is enabled.
- Remove stub primary (hard interrupt) handlers
A bunch of drivers implement a stub primary (hard interrupt) handler which
just returns IRQ_WAKE_THREAD. The same functionality is provided by the
core code when the primary handler argument of request_thread_irq() is set
to NULL.
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Merge tag 'irq-cleanups-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq cleanups from Thomas Gleixner:
"A series of treewide cleanups to ensure interrupt request consistency.
- Add the missing IRQF_COND_ONESHOT flag to devm_request_irq()
This is inconsistent vs request_irq() and causes the same issues
which where addressed with the introduction of this flag
- Cleanup IRQF_ONESHOT and IRQF_NO_THREAD usage
Quite some drivers have inconsistent interrupt request flags
related to interrupt threading namely IRQF_ONESHOT and
IRQF_NO_THREAD. This leads to warnings and/or malfunction when
forced interrupt threading is enabled.
- Remove stub primary (hard interrupt) handlers
A bunch of drivers implement a stub primary (hard interrupt)
handler which just returns IRQ_WAKE_THREAD. The same functionality
is provided by the core code when the primary handler argument of
request_thread_irq() is set to NULL"
* tag 'irq-cleanups-2026-02-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
media: pci: mg4b: Use IRQF_NO_THREAD
mfd: wm8350-core: Use IRQF_ONESHOT
thermal/qcom/lmh: Replace IRQF_ONESHOT with IRQF_NO_THREAD
rtc: amlogic-a4: Remove IRQF_ONESHOT
usb: typec: fusb302: Remove IRQF_ONESHOT
EDAC/altera: Remove IRQF_ONESHOT
char: tpm: cr50: Remove IRQF_ONESHOT
ARM: versatile: Remove IRQF_ONESHOT
scsi: efct: Use IRQF_ONESHOT and default primary handler
Bluetooth: btintel_pcie: Use IRQF_ONESHOT and default primary handler
bus: fsl-mc: Use default primary handler
mailbox: bcm-ferxrm-mailbox: Use default primary handler
iommu/amd: Use core's primary handler and set IRQF_ONESHOT
platform/x86: int0002: Remove IRQF_ONESHOT from request_irq()
genirq: Set IRQF_COND_ONESHOT in devm_request_irq().
- Remove the unused omap-cpufreq driver (Andreas Kemnade)
- Optimize error handling code in cpufreq_boost_trigger_state() and
make cpufreq_boost_trigger_state() return -EOPNOTSUPP if no policy
supports boost (Lifeng Zheng)
- Update cpufreq-dt-platdev list for tegra, qcom, TI (Aaron Kling,
Dhruva Gole, and Konrad Dybcio)
- Minor improvements to the cpufreq and cpumask rust implementation
(Alexandre Courbot, Alice Ryhl, Tamir Duberstein, and Yilin Chen)
- Add support for AM62L3 SoC to the ti-cpufreq driver (Dhruva Gole)
- Update arch_freq_scale in the CPPC cpufreq driver's frequency
invariance engine (FIE) in scheduler ticks if the related CPPC
registers are not in PCC (Jie Zhan)
- Assorted minor cleanups and improvements in ARM cpufreq drivers (Juan
Martinez, Felix Gu, Luca Weiss, and Sergey Shtylyov)
- Add generic helpers for sysfs show/store to cppc_cpufreq (Sumit
Gupta)
- Make the scaling_setspeed cpufreq sysfs attribute return the actual
requested frequency to avoid confusion (Pengjie Zhang)
- Simplify the idle CPU time granularity test in the ondemand cpufreq
governor (Frederic Weisbecker)
- Enable asym capacity in intel_pstate only when CPU SMT is not
possible (Yaxiong Tian)
- Update the description of rate_limit_us default value in cpufreq
documentation (Yaxiong Tian)
- Add a command line option to adjust the C-states table in the
intel_idle driver, remove the 'preferred_cstates' module parameter
from it, add C-states validation to it and clean it up (Artem
Bityutskiy)
- Make the menu cpuidle governor always check the time till the closest
timer event when the scheduler tick has been stopped to prevent it
from mistakenly selecting the deepest available idle state (Rafael
Wysocki)
- Update the teo cpuidle governor to avoid making suboptimal decisions
in certain corner cases and generally improve idle state selection
accuracy (Rafael Wysocki)
- Remove an unlikely() annotation on the early-return condition in
menu_select() that leads to branch misprediction 100% of the time
on systems with only 1 idle state enabled, like ARM64 servers (Breno
Leitao)
- Add Christian Loehle to MAINTAINERS as a cpuidle reviewer (Christian
Loehle)
- Stop flagging the PM runtime workqueue as freezable to avoid system
suspend and resume deadlocks in subsystems that assume asynchronous
runtime PM to work during system-wide PM transitions (Rafael Wysocki)
- Drop redundant NULL pointer checks before acomp_request_free() from
the hibernation code handling image saving (Rafael Wysocki)
- Update wakeup_sources_walk_start() to handle empty lists of wakeup
sources as appropriate (Samuel Wu)
- Make dev_pm_clear_wake_irq() check the power.wakeirq value under
power.lock to avoid race conditions (Gui-Dong Han)
- Avoid bit field races related to power.work_in_progress in the core
device suspend code (Xuewen Yan)
- Make several drivers discard pm_runtime_put() return value in
preparation for converting that function to a void one (Rafael
Wysocki)
- Add PL4 support for Ice Lake to the Intel RAPL power capping
driver (Daniel Tang)
- Replace sprintf() with sysfs_emit() in power capping sysfs show
functions (Sumeet Pawnikar)
- Make dev_pm_opp_get_level() return value match the documentation
after a previous update of the latter (Aleks Todorov)
- Use scoped for each OF child loop in the OPP code (Krzysztof
Kozlowski)
- Fix a bug in an example code snippet and correct typos in the energy
model management documentation (Patrick Little)
- Fix miscellaneous problems in cpupower (Kaushlendra Kumar):
* idle_monitor: Fix incorrect value logged after stop
* Fix inverted APERF capability check
* Use strcspn() to strip trailing newline
* Reset errno before strtoull()
* Show C0 in idle-info dump
- Improve cpupower installation procedure by making the systemd step
optional and allowing users to disable the installation of systemd's
unit file (João Marcos Costa)
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Merge tag 'pm-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"By the number of commits, cpufreq is the leading party (again) and the
most visible change there is the removal of the omap-cpufreq driver
that has not been used for a long time (good riddance). There are also
quite a few changes in the cppc_cpufreq driver, mostly related to
fixing its frequency invariance engine in the case when the CPPC
registers used by it are not in PCC. In addition to that, support for
AM62L3 is added to the ti-cpufreq driver and the cpufreq-dt-platdev
list is updated for some platforms. The remaining cpufreq changes are
assorted fixes and cleanups.
Next up is cpuidle and the changes there are dominated by intel_idle
driver updates, mostly related to the new command line facility
allowing users to adjust the list of C-states used by the driver.
There are also a few updates of cpuidle governors, including two menu
governor fixes and some refinements of the teo governor, and a
MAINTAINERS update adding Christian Loehle as a cpuidle reviewer.
[Thanks for stepping up Christian!]
The most significant update related to system suspend and hibernation
is the one to stop freezing the PM runtime workqueue during system PM
transitions which allows some deadlocks to be avoided. There is also a
fix for possible concurrent bit field updates in the core device
suspend code and a few other minor fixes.
Apart from the above, several drivers are updated to discard the
return value of pm_runtime_put() which is going to be converted to a
void function as soon as everybody stops using its return value, PL4
support for Ice Lake is added to the Intel RAPL power capping driver,
and there are assorted cleanups, documentation fixes, and some
cpupower utility improvements.
Specifics:
- Remove the unused omap-cpufreq driver (Andreas Kemnade)
- Optimize error handling code in cpufreq_boost_trigger_state() and
make cpufreq_boost_trigger_state() return -EOPNOTSUPP if no policy
supports boost (Lifeng Zheng)
- Update cpufreq-dt-platdev list for tegra, qcom, TI (Aaron Kling,
Dhruva Gole, and Konrad Dybcio)
- Minor improvements to the cpufreq and cpumask rust implementation
(Alexandre Courbot, Alice Ryhl, Tamir Duberstein, and Yilin Chen)
- Add support for AM62L3 SoC to the ti-cpufreq driver (Dhruva Gole)
- Update arch_freq_scale in the CPPC cpufreq driver's frequency
invariance engine (FIE) in scheduler ticks if the related CPPC
registers are not in PCC (Jie Zhan)
- Assorted minor cleanups and improvements in ARM cpufreq drivers
(Juan Martinez, Felix Gu, Luca Weiss, and Sergey Shtylyov)
- Add generic helpers for sysfs show/store to cppc_cpufreq (Sumit
Gupta)
- Make the scaling_setspeed cpufreq sysfs attribute return the actual
requested frequency to avoid confusion (Pengjie Zhang)
- Simplify the idle CPU time granularity test in the ondemand cpufreq
governor (Frederic Weisbecker)
- Enable asym capacity in intel_pstate only when CPU SMT is not
possible (Yaxiong Tian)
- Update the description of rate_limit_us default value in cpufreq
documentation (Yaxiong Tian)
- Add a command line option to adjust the C-states table in the
intel_idle driver, remove the 'preferred_cstates' module parameter
from it, add C-states validation to it and clean it up (Artem
Bityutskiy)
- Make the menu cpuidle governor always check the time till the
closest timer event when the scheduler tick has been stopped to
prevent it from mistakenly selecting the deepest available idle
state (Rafael Wysocki)
- Update the teo cpuidle governor to avoid making suboptimal
decisions in certain corner cases and generally improve idle state
selection accuracy (Rafael Wysocki)
- Remove an unlikely() annotation on the early-return condition in
menu_select() that leads to branch misprediction 100% of the time
on systems with only 1 idle state enabled, like ARM64 servers
(Breno Leitao)
- Add Christian Loehle to MAINTAINERS as a cpuidle reviewer
(Christian Loehle)
- Stop flagging the PM runtime workqueue as freezable to avoid system
suspend and resume deadlocks in subsystems that assume asynchronous
runtime PM to work during system-wide PM transitions (Rafael
Wysocki)
- Drop redundant NULL pointer checks before acomp_request_free() from
the hibernation code handling image saving (Rafael Wysocki)
- Update wakeup_sources_walk_start() to handle empty lists of wakeup
sources as appropriate (Samuel Wu)
- Make dev_pm_clear_wake_irq() check the power.wakeirq value under
power.lock to avoid race conditions (Gui-Dong Han)
- Avoid bit field races related to power.work_in_progress in the core
device suspend code (Xuewen Yan)
- Make several drivers discard pm_runtime_put() return value in
preparation for converting that function to a void one (Rafael
Wysocki)
- Add PL4 support for Ice Lake to the Intel RAPL power capping driver
(Daniel Tang)
- Replace sprintf() with sysfs_emit() in power capping sysfs show
functions (Sumeet Pawnikar)
- Make dev_pm_opp_get_level() return value match the documentation
after a previous update of the latter (Aleks Todorov)
- Use scoped for each OF child loop in the OPP code (Krzysztof
Kozlowski)
- Fix a bug in an example code snippet and correct typos in the
energy model management documentation (Patrick Little)
- Fix miscellaneous problems in cpupower (Kaushlendra Kumar):
* idle_monitor: Fix incorrect value logged after stop
* Fix inverted APERF capability check
* Use strcspn() to strip trailing newline
* Reset errno before strtoull()
* Show C0 in idle-info dump
- Improve cpupower installation procedure by making the systemd step
optional and allowing users to disable the installation of
systemd's unit file (João Marcos Costa)"
* tag 'pm-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits)
PM: sleep: core: Avoid bit field races related to work_in_progress
PM: sleep: wakeirq: harden dev_pm_clear_wake_irq() against races
cpufreq: Documentation: Update description of rate_limit_us default value
cpufreq: intel_pstate: Enable asym capacity only when CPU SMT is not possible
PM: wakeup: Handle empty list in wakeup_sources_walk_start()
PM: EM: Documentation: Fix bug in example code snippet
Documentation: Fix typos in energy model documentation
cpuidle: governors: teo: Refine intercepts-based idle state lookup
cpuidle: governors: teo: Adjust the classification of wakeup events
cpufreq: ondemand: Simplify idle cputime granularity test
cpufreq: userspace: make scaling_setspeed return the actual requested frequency
PM: hibernate: Drop NULL pointer checks before acomp_request_free()
cpufreq: CPPC: Add generic helpers for sysfs show/store
cpufreq: scmi: Fix device_node reference leak in scmi_cpu_domain_id()
cpufreq: ti-cpufreq: add support for AM62L3 SoC
cpufreq: dt-platdev: Add ti,am62l3 to blocklist
cpufreq/amd-pstate: Add comment explaining nominal_perf usage for performance policy
cpufreq: scmi: correct SCMI explanation
cpufreq: dt-platdev: Block the driver from probing on more QC platforms
rust: cpumask: rename methods of Cpumask for clarity and consistency
...
Introduce support for Thunderbolt (TBT) alternate mode to the UCSI driver.
This allows the driver to manage the entry and exit of TBT altmode by
providing the necessary typec_altmode_ops.
ucsi_altmode_update_active() is invoked when the Connector Partner Changed
bit is set in the GET_CONNECTOR_STATUS data. This ensures that the
alternate mode's active state is synchronized with the current mode the
connector is operating in.
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260206115754.828954-1-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Check regulator state as peripheral and detach can disable vbus.
Without this check we will try to disable the regulator twice if
we disconnect host and then connect as device.
Fixes: 27fbc19e52 ("usb: typec: hd3ss3220: Enable VBUS based on role state")
Signed-off-by: Jan Remmet <j.remmet@phytec.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linu.intel.com>
Link: https://patch.msgid.link/20260206-wip-jremmet-hd3ss3220_vbus_split-v4-1-ee5b4e402187@phytec.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When all files are closed, functionfs needs ffs_data_reset() to be
done before any further opens are allowed.
During that time we have ffs->state set to FFS_CLOSING; that makes
->open() fail with -EBUSY. Once ffs_data_reset() is done, it
switches state (to FFS_READ_DESCRIPTORS) indicating that opening
that thing is allowed again. There's a couple of additional twists:
* mounting with -o no_disconnect delays ffs_data_reset()
from doing that at the final ->release() to the first subsequent
open(). That's indicated by ffs->state set to FFS_DEACTIVATED;
if open() sees that, it immediately switches to FFS_CLOSING and
proceeds with doing ffs_data_reset() before returning to userland.
* a couple of usb callbacks need to force the delayed
transition; unfortunately, they are done in locking environment
that does not allow blocking and ffs_data_reset() can block.
As the result, if these callbacks see FFS_DEACTIVATED, they change
state to FFS_CLOSING and use schedule_work() to get ffs_data_reset()
executed asynchronously.
Unfortunately, the locking is rather insufficient. A fix attempted
in e5bf5ee266 ("functionfs: fix the open/removal races") had closed
a bunch of UAF, but it didn't do anything to the callbacks, lacked
barriers in transition from FFS_CLOSING to FFS_READ_DESCRIPTORS
_and_ it had been too heavy-handed in open()/open() serialization -
I've used ffs->mutex for that, and it's being held over actual IO on
ep0, complete with copy_from_user(), etc.
Even more unfortunately, the userland side is apparently racy enough
to have the resulting timing changes (no failures, just a delayed
return of open(2)) disrupt the things quite badly. Userland bugs
or not, it's a clear regression that needs to be dealt with.
Solution is to use a spinlock for serializing these state checks and
transitions - unlike ffs->mutex it can be taken in these callbacks
and it doesn't disrupt the timings in open().
We could introduce a new spinlock, but it's easier to use the one
that is already there (ffs->eps_lock) instead - the locking
environment is safe for it in all affected places.
Since now it is held over all places that alter or check the
open count (ffs->opened), there's no need to keep that atomic_t -
int would serve just fine and it's simpler that way.
Fixes: e5bf5ee266 ("functionfs: fix the open/removal races")
Fixes: 18d6b32fca ("usb: gadget: f_fs: add "no_disconnect" mode") # v4.0
Tested-by: Samuel Wu <wusamuel@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The PORTSC1 register has a different offset in Tegra20 compared to
Tegra30+, yet they share a crucial set of registers required for HSIC
functionality. Reflect this register offset change in the SoC config.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Link: https://patch.msgid.link/20260202080526.23487-5-clamor95@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The parallel transceiver select used in HSIC mode differs on Tegra20,
where it uses the UTMI value (0), whereas Tegra30+ uses a dedicated HSIC
value. Reflect this in the SoC config.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Link: https://patch.msgid.link/20260202080526.23487-4-clamor95@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Return exact error value from utmi_wait_register during HSIC power on.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Link: https://patch.msgid.link/20260202080526.23487-3-clamor95@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change TEGRA_USB_HOSTPC1_DEVLC_PTS_HSIC to its literal value instead of
using the BIT macro, as it is an enumeration. Correct the spelling in the
comment and rename uhsic_registers_shift to uhsic_registers_offset.
These changes are cosmetic and do not affect code behavior.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Link: https://patch.msgid.link/20260202080526.23487-2-clamor95@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 13b1f8e25b ("usb: dwc2: Force mode optimizations") removed the
dwc2_force_mode(hsotg, true) in dwc2_force_dr_mode() if dr_mode is host.
But this brings a bug: the controller fails to resume back as host,
further debugging shows that the controller is resumed as peripheral.
The reason is dwc2_force_dr_mode() missed the host mode forcing, and
when resuming from s2ram, GINTSTS is 0 by default, dwc2_is_device_mode
in dwc2_resume() misreads this as the controller is in peripheral mode.
Fix the resume failure by adding back the dwc2_force_mode(hsotg, true).
Then an obvious question is: why this bug hasn't been observed and fixed
for about six years? There are two resons: most dwc2 platforms set the
dr_mode as otg; Some platforms don't have suspend & resume support yet.
Fixes: 13b1f8e25b ("usb: dwc2: Force mode optimizations")
Cc: stable <stable@kernel.org>
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://patch.msgid.link/20260129021534.10411-1-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the role change while we are suspended, the cdns3 driver switches to the
new mode during resume. However, switching to host mode in this context
causes a NULL pointer dereference.
The host role's start() operation registers a xhci-hcd device, but its
probe is deferred while we are in the resume path. The host role's resume()
operation assumes the xhci-hcd device is already probed, which is not the
case, leading to the dereference. Since the start() operation of the new
role is already called, the resume operation can be skipped.
So skip the resume operation for the new role if a role switch occurs
during resume. Once the resume sequence is complete, the xhci-hcd device
can be probed in case of host mode.
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000208
Mem abort info:
...
Data abort info:
...
[0000000000000208] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] SMP
Modules linked in:
CPU: 0 UID: 0 PID: 146 Comm: sh Not tainted
6.19.0-rc7-00013-g6e64f4aabfae-dirty #135 PREEMPT
Hardware name: Texas Instruments J7200 EVM (DT)
pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : usb_hcd_is_primary_hcd+0x0/0x1c
lr : cdns_host_resume+0x24/0x5c
...
Call trace:
usb_hcd_is_primary_hcd+0x0/0x1c (P)
cdns_resume+0x6c/0xbc
cdns3_controller_resume.isra.0+0xe8/0x17c
cdns3_plat_resume+0x18/0x24
platform_pm_resume+0x2c/0x68
dpm_run_callback+0x90/0x248
device_resume+0x100/0x24c
dpm_resume+0x190/0x2ec
dpm_resume_end+0x18/0x34
suspend_devices_and_enter+0x2b0/0xa44
pm_suspend+0x16c/0x5fc
state_store+0x80/0xec
kobj_attr_store+0x18/0x2c
sysfs_kf_write+0x7c/0x94
kernfs_fop_write_iter+0x130/0x1dc
vfs_write+0x240/0x370
ksys_write+0x70/0x108
__arm64_sys_write+0x1c/0x28
invoke_syscall+0x48/0x10c
el0_svc_common.constprop.0+0x40/0xe0
do_el0_svc+0x1c/0x28
el0_svc+0x34/0x108
el0t_64_sync_handler+0xa0/0xe4
el0t_64_sync+0x198/0x19c
Code: 52800003 f9407ca5 d63f00a0 17ffffe4 (f9410401)
---[ end trace 0000000000000000 ]---
Cc: stable <stable@kernel.org>
Fixes: 2cf2581cd2 ("usb: cdns3: add power lost support for system resume")
Signed-off-by: Thomas Richard (TI) <thomas.richard@bootlin.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://patch.msgid.link/20260130-usb-cdns3-fix-role-switching-during-resume-v1-1-44c456852b52@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently dwc3_gadget_vbus_draw() can be called from atomic
context, which in turn invokes power-supply-core APIs. And
some these PMIC APIs have operations that may sleep, leading
to kernel panic.
Fix this by moving the vbus_draw into a workqueue context.
Fixes: 99288de360 ("usb: dwc3: add an alternate path in vbus_draw callback")
Cc: stable <stable@kernel.org>
Tested-by: Samuel Wu <wusamuel@google.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Prashanth K <prashanth.k@oss.qualcomm.com>
Link: https://patch.msgid.link/20260204054155.3063825-1-prashanth.k@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are some new modem device ids for 6.20-rc1.
Everything has been in linux-next with no reported issues.
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YW51MiwyLjUrMS4xMSwyLDIACgkQC8XNwux9ZQiMEQD/cdK1J++w+QgeyIq/uGa9
vUVgZnkD26ZsWKU6xnBNYo8BAJDmomuSR67ruPLjLEDcgGIrmx+bbsHHS9O5Vuol
ojIB
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Merge tag 'usb-serial-6.20-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB serial device ids for 6.20-rc1
Here are some new modem device ids for 6.20-rc1.
Everything has been in linux-next with no reported issues.
* tag 'usb-serial-6.20-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: option: add Telit FN920C04 RNDIS compositions
Merge updates related to runtime PM for 6.20-rc1/7.0-rc1:
- Make several drivers discard pm_runtime_put() return value in
preparation for converting that function to a void one (Rafael
Wysocki)
* pm-runtime:
drm: Discard pm_runtime_put() return value
genirq/chip: Change irq_chip_pm_put() return type to void
scsi: ufs: core: Discard pm_runtime_put() return values
platform/chrome: cros_hps_i2c: Discard pm_runtime_put() return value
coresight: Discard pm_runtime_put() return values
hwspinlock: omap: Discard pm_runtime_put() return value
watchdog: rzv2h_wdt: Discard pm_runtime_put() return value
watchdog: rz: Discard pm_runtime_put() return values
media: ccs: Discard pm_runtime_put() return value
drm/imagination: Discard pm_runtime_put() return value
USB: core: Discard pm_runtime_put() return value
Passing IRQF_ONESHOT ensures that the interrupt source is masked until
the secondary (threaded) handler is done. If only a primary handler is
used then the flag makes no sense because the interrupt can not fire
(again) while its handler is running.
The flag also prevents force-threading of the primary handler and the
irq-core will warn about this.
Remove IRQF_ONESHOT from irqflags.
Fixes: 309b6341d5 ("usb: typec: fusb302: Revert incorrect threaded irq fix")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260128095540.863589-12-bigeasy@linutronix.de
When multiple DWC3 controllers are being used, trace events from
different instances get mixed up making debugging difficult as
there's no way to distinguish which instance generated the trace.
Use the register base address of dwc3 controller and append it to
trace events, so that the source instance is clearly identifiable.
Example trace output,
before -> dwc3_event: event (00000101): Reset [U0]
after -> dwc3_event: 0x000000000a600000: event (00000101): Reset [U0]
Signed-off-by: Prashanth K <prashanth.k@oss.qualcomm.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260122105000.4126769-1-prashanth.k@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The COREPLL_PWRDN bit in the BLCG register must be set when the XUSB
device controller is powergated and cleared when it is unpowergated.
If this bit is not explicitly controlled, the core PLL may remain in an
incorrect power state across suspend/resume or ELPG transitions.
Therefore, update the driver to explicitly control this bit during
powergate transitions.
Fixes: 49db427232 ("usb: gadget: Add UDC driver for tegra XUSB device mode controller")
Cc: stable <stable@kernel.org>
Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Link: https://patch.msgid.link/20260123173121.4093902-1-waynec@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In clang version 21.1 and later the -Wimplicit-enum-enum-cast warning
option has been introduced. This warning is enabled by default and can
be used to catch .queuecommand() implementations that return another
value than 0 or one of the SCSI_MLQUEUE_* constants. Hence this patch
that changes the return type of the .queuecommand() implementations from
'int' into 'enum scsi_qc_status'. No functionality has been changed.
Cc: Damien Le Moal <dlemoal@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260115210357.2501991-6-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add support for HSIC USB mode, which can be set for second USB controller
and PHY on Tegra SoC along with already supported UTMI or ULPI.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Link: https://patch.msgid.link/20260122151125.7367-3-clamor95@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Refactor to directly use enum usb_phy_interface to determine the PHY mode.
This change is in preparation for adding support for HSIC mode.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Link: https://patch.msgid.link/20260122151125.7367-2-clamor95@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The mode selection sequence is initiated by the driver after all partner
alternate modes have been successfully registered.
When a partner is disconnected, the driver also stops the mode selection
process and releases resources via `typec_mode_selection_delete`.
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260119131824.2529334-8-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If the ucsi port driver supports modes selection, it should implement
`add_partner_altmodes` and `remove_partner_altmodes` ucsi operations. With
these operations the driver can manage the mode selection process.
Once partner altmodes are registered, `add_partner_altmodes` is called to
start the mode selection. When the partner is unregistered,
`remove_partner_altmodes` is supposed to stop any ongoing processes and
clean up the resources.
`typec_altmode_state_update` informes mode selection about the current mode
of the Type-C connector.
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260119131824.2529334-7-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The port driver sets this bit for an alternate mode description to indicate
support for the mode selection feature. Once set, individual Alt Mode
drivers will no longer attempt to activate their respective modes within
their probe functions. This prevents race conditions and non-prioritized
activation.
The bit is not set by default. If left unset, the system retains the
current behavior where Alt Mode drivers manage their own activation logic.
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260119131824.2529334-6-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The mode selection process is controlled by the following API functions,
which allow to initiate and complete mode entry based on the priority of
each mode:
`typec_mode_selection_start` function compiles a priority list of supported
Alternate Modes.
`typec_altmode_state_update` function is invoked by the port driver to
communicate the current mode of the Type-C connector.
`typec_mode_selection_delete` function stops the currently running mode
selection process and releases all associated system resources.
`mode_selection_work_fn` task attempts to activate modes. The process stops
on success; otherwise, it proceeds to the next mode after a timeout or
error.
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260119131824.2529334-5-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch introduces a priority sysfs attribute to the USB Type-C
alternate mode port interface. This new attribute allows user-space to
configure the numeric priority of alternate modes managing their preferred
order of operation. If a new priority value conflicts with an existing
mode's priority, the priorities of the conflicting mode and all subsequent
modes are automatically incremented to ensure uniqueness.
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260119131824.2529334-4-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This new field in the port properties dictates whether the Platform Policy
Manager (PPM) allows the OS Policy Manager (OPM) to change the currently
active, negotiated alternate mode.
Signed-off-by: Andrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://patch.msgid.link/20260119131824.2529334-2-akuchynski@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The generic USB PHY driver uses the existence of the "clocks" property
to see if a clock is optional or not. Use devm_clk_get_optional()
instead, which exists for this purpose. As usb_phy_generic.clk is now
either a valid clock pointer or NULL, and all clock operations handle
NULL pointers gracefully, several IS_ERR() checks can be removed,
simplifying the code.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
...
Link: https://patch.msgid.link/5cc21d821edf5d40f56a74cd251bb1b982876b72.1769004444.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
bdc_run() can be ran during atomic context leading to a sleep during
atomic warning. Fix this by replacing read_poll_timeout() with
read_poll_timeout_atomic().
Fixes: 75ae051efc ("usb: gadget: bdc: use readl_poll_timeout() to simplify code")
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260120200754.2488765-1-justin.chen@broadcom.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add dbc_manufacturer sysfs attribute to allow changing the manufacturer
description presented by the debug device when a host requests a string
descriptor with iManufacturer index.
Value can only be changed while debug capability (DbC) is in disabled
state to prevent USB device descriptor change while connected to a USB
host.
The default value is "Linux Foundation".
The string length can be from 1 to 126 characters.
String is terminated at null or newline, driver does not support empty
string.
[ mn: Improve commit message and sysfs entry documentation ]
Signed-off-by: Łukasz Bartosik <ukaszb@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260120181148.128712-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add dbc_product sysfs attribute to allow changing the product description
presented by the debug device when a host requests a string descriptor
with iProduct index.
Value can only be changed while debug capability (DbC) is in disabled
state to prevent USB device descriptor change while connected to a USB
host.
The default value is "Linux USB Debug Target".
The field length can be from 1 to 126 characters.
String is terminated at null or newline, driver does not support empty
string.
[ mn: Improve commit message and sysfs entry documentation ]
Signed-off-by: Łukasz Bartosik <ukaszb@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260120181148.128712-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add dbc_serial sysfs attribute to allow changing the serial number
string descriptor presented by the debug device when a host requests a
string descriptor with iSerialNumber index.
Value can only be changed while debug capability (DbC) is in disabled
state to prevent USB device descriptor change while connected to a USB
host.
The default value is "0001".
The field length can be from 1 to 126 characters.
String is terminated at null or newline, driver does not support empty
string.
[ mn: Improve commit message and sysfs entry documentation ]
Signed-off-by: Łukasz Bartosik <ukaszb@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260120181148.128712-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reorganize the code to prepare ground for setting serial number,
product and manufacturer names through sysfs. This commit:
1. Introduces new buffers for storing serial number, product and
manufacturer name in utf8. The buffers will be used by sysfs
*_show and *_store functions.
2. Increases USB string descriptor data maximum length to the
value from USB specification (126 bytes of data).
3. Adds new helper functions get_str_desc_len, prepare_len
and xhci_dbc_populate_str_desc.
Signed-off-by: Łukasz Bartosik <ukaszb@chromium.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260120181148.128712-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For systems where the ID pin isn't available as gpio use the ATTACHED_STATE
register instead to control vbus.
>From the datasheet:
"This is an additional method to communicate attach other
than the ID pin. These bits can be read by the application to
determine what was attached."
Use this method if id-gpios property is not set, but the connector node
has vbus-supply defined.
Signed-off-by: Jan Remmet <j.remmet@phytec.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260115-wip-jremmet-hd3ss3220_vbus-v1-1-b7d9adfbe346@phytec.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The platform_get_irq_byname() function already prints an error message
internally upon failure using dev_err_probe(). Therefore, the explicit
dev_err() is redundant and results in duplicate error logs.
Remove the redundant dev_err() call to clean up the error path.
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260115023800.4142416-1-nichen@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We found that calling irq_dispose_mapping() caused a kernel warning
when removing the driver. The IRQs are obtained using
platform_get_irq(), which returns a Linux virtual IRQ number directly
managed by the device core, not by the OF subsystem. Therefore, the
driver should not call irq_dispose_mapping() for these IRQs.
Fixes: 5df186e2ef ("usb: xhci: tegra: Support USB wakeup function for Tegra234")
Cc: stable@vger.kernel.org
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Wei-Cheng Chen <weichengc@nvidia.com>
Link: https://patch.msgid.link/20260115103621.587366-1-weichengc@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove <linux/hex.h> from <linux/kernel.h> and update all users/callers of
hex.h interfaces to directly #include <linux/hex.h> as part of the process
of putting kernel.h on a diet.
Removing hex.h from kernel.h means that 36K C source files don't have to
pay the price of parsing hex.h for the roughly 120 C source files that
need it.
This change has been build-tested with allmodconfig on most ARCHes. Also,
all users/callers of <linux/hex.h> in the entire source tree have been
updated if needed (if not already #included).
Link: https://lkml.kernel.org/r/20251215005206.2362276-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Yury Norov (NVIDIA) <yury.norov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The WCH CH334/CH335[0] are USB2.0 protocol compliant 4-port USB HUB
controller chips, supporting USB2.0 high-speed and full-speed for
upstream ports, and USB2.0 high-speed 480Mbps, full-speed 12Mbps and
low-speed 1.5Mbps for downstream ports, supporting not only low-cost STT
mode (single TT schedules 4 downstream ports in time share), but also
supports high performance MTT mode (4 TTs each corresponding to 1 port,
concurrent processing).
[0]: https://www.wch-ic.com/downloads/CH334DS1_PDF.html
Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
Link: https://patch.msgid.link/20260113095827.115-3-kernel@airkyi.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use dwc pointer in dwc3_readl() dwc3_writel() instead of passing
the dwc->regs. This would help us access the dwc structure and
log the base address in traces. There's no functional changes in
this patch, just refactoring existing APIs.
Signed-off-by: Prashanth K <prashanth.k@oss.qualcomm.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260114100748.2950103-3-prashanth.k@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove dep->regs from struct dwc3_ep and reuse dwc->regs instead.
Thus eliminating redundant iomem addresses and making register
access more consistent across the driver.
Signed-off-by: Prashanth K <prashanth.k@oss.qualcomm.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260114100748.2950103-2-prashanth.k@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xhci_sideband_remove_endpoint() incorrecly assumes that the endpoint is
running and has a valid transfer ring.
Lianqin reported a crash during suspend/wake-up stress testing, and
found the cause to be dereferencing a non-existing transfer ring
'ep->ring' during xhci_sideband_remove_endpoint().
The endpoint and its ring may be in unknown state if this function
is called after xHCI was reinitialized in resume (lost power), or if
device is being re-enumerated, disconnected or endpoint already dropped.
Fix this by both removing unnecessary ring access, and by checking
ep->ring exists before dereferencing it. Also make sure endpoint is
running before attempting to stop it.
Remove the xhci_initialize_ring_info() call during sideband endpoint
removal as is it only initializes ring structure enqueue, dequeue and
cycle state values to their starting values without changing actual
hardware enqueue, dequeue and cycle state. Leaving them out of sync
is worse than leaving it as it is. The endpoint will get freed in after
this in most usecases.
If the (audio) class driver want's to reuse the endpoint after offload
then it is up to the class driver to ensure endpoint is properly set up.
Reported-by: 胡连勤 <hulianqin@vivo.com>
Closes: https://lore.kernel.org/linux-usb/TYUPR06MB6217B105B059A7730C4F6EC8D2B9A@TYUPR06MB6217.apcprd06.prod.outlook.com/
Tested-by: 胡连勤 <hulianqin@vivo.com>
Fixes: de66754e9f ("xhci: sideband: add initial api to register a secondary interrupter entity")
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20260115233758.364097-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here's a fix for an f81232 enumeration issue that could prevent some
ports from being enabled (e.g. during driver rebind).
Included are also some new device ids.
All have been in linux-next with no reported issues.
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Merge tag 'usb-serial-6.19-rc6' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB serial fix for 6.19-rc6
Here's a fix for an f81232 enumeration issue that could prevent some
ports from being enabled (e.g. during driver rebind).
Included are also some new device ids.
All have been in linux-next with no reported issues.
* tag 'usb-serial-6.19-rc6' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: f81232: fix incomplete serial port generation
USB: serial: ftdi_sio: add support for PICAXE AXE027 cable
USB: serial: option: add Telit LE910 MBIM composition
Based on the reality[1][2] that vb2_dma_sg_alloc() can't alloc buffer with
device DMA limits, those device will always get below error: "swiotlb
buffer is full (sz: 393216 bytes), total 65536 (slots), used 2358 (slots)"
and the uvc gadget function can't work at all.
The videobuf2-dma-sg.c driver doesn't has a formal improve about this issue
till now. For UVC gadget, the videobuf2 subsystem doesn't do dma_map() on
vmalloc returned big buffer when allocate the video buffers, however, it do
it for dma_sg returned buffer. So the issue happens for vb2_dma_sg_alloc().
To workaround the issue, lets retry vb2_reqbufs() with
vb_vmalloc_memops if it fails to allocate buffer with vb2_dma_sg_memops.
If use vmalloced buffer, UVC gadget will allocate some small buffers for
each usb_request to do dma transfer, then uvc driver will memcopy data
from big buffer to small buffer.
Link[1]: https://lore.kernel.org/linux-media/20230828075420.2009568-1-anle.pan@nxp.com/
Link[2]: https://lore.kernel.org/linux-media/20230914145812.12851-1-hui.fang@nxp.com/
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260113-uvc-gadget-fix-patch-v2-4-62950ef5bcb5@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
uvcg_queue_init() may fail, but its return value is currently ignored.
Propagate the error code from uvcg_queue_init() to correctly report
initialization failures.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260113-uvc-gadget-fix-patch-v2-3-62950ef5bcb5@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
According to USB specification:
For full-/high-speed isochronous endpoints, the bInterval value is
used as the exponent for a 2^(bInterval-1) value.
To correctly convert bInterval as interval_duration:
interval_duration = 2^(bInterval-1) * frame_interval
Because the unit of video->interval is 100ns, add a comment info to
make it clear.
Fixes: 48dbe73117 ("usb: gadget: uvc: set req_size and n_requests based on the frame interval")
Cc: stable@vger.kernel.org
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260113-uvc-gadget-fix-patch-v2-2-62950ef5bcb5@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current req_payload_size calculation has 2 issue:
(1) When the first time calculate req_payload_size for all the buffers,
reqs_per_frame = 0 will be the divisor of DIV_ROUND_UP(). So
the result is undefined.
This happens because VIDIOC_STREAMON is always executed after
VIDIOC_QBUF. So video->reqs_per_frame will be 0 until VIDIOC_STREAMON
is run.
(2) The buf->req_payload_size may be bigger than max_req_size.
Take YUYV pixel format as example:
If bInterval = 1, video->interval = 666666, high-speed:
video->reqs_per_frame = 666666 / 1250 = 534
720p: buf->req_payload_size = 1843200 / 534 = 3452
1080p: buf->req_payload_size = 4147200 / 534 = 7766
Based on such req_payload_size, the controller can't run normally.
To fix above issue, assign max_req_size to buf->req_payload_size when
video->reqs_per_frame = 0. And limit buf->req_payload_size to
video->req_size if it's large than video->req_size. Since max_req_size
is used at many place, add it to struct uvc_video and set the value once
endpoint is enabled.
Fixes: 98ad032915 ("usb: gadget: uvc: set req_length based on payload by nreqs instead of req_size")
Cc: stable@vger.kernel.org
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260113-uvc-gadget-fix-patch-v2-1-62950ef5bcb5@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ignore USB role switches if dwc3-apple is already in the desired state.
The USB-C port controller on M2 and M1/M2 Pro/Max/Ultra devices issues
additional interrupts which result in USB role switches to the already
active role.
Ignore these USB role switches to ensure the USB-C port controller and
dwc3-apple are always in a consistent state. This matches the behaviour
in __dwc3_set_mode() in core.c.
Fixes detecting USB 2.0 and 3.x devices on the affected systems. The
reset caused by the additional role switch appears to leave the USB
devices in a state which prevents detection when the phy and dwc3 is
brought back up again.
Fixes: 0ec946d32e ("usb: dwc3: Add Apple Silicon DWC3 glue layer driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Janne Grunau <j@jannau.net>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Sven Peter <sven@kernel.org>
Tested-by: Sven Peter <sven@kernel.org> # M1 mac mini and macbook air
Link: https://patch.msgid.link/20260109-apple-dwc3-role-switch-v1-1-11623b0f6222@jannau.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When some wake IRQs are disabled in the device tree, the corresponding
interrupt entries are removed from DT. In such cases, the driver
currently calls platform_get_irq(), which returns -ENXIO and logs
an error like:
tegra-xusb 3610000.usb: error -ENXIO: IRQ index 2 not found
However, not all wake IRQs are mandatory. The hardware can operate
normally even if some wake sources are not defined in DT. To avoid this
false alarm and allow missing wake IRQs gracefully, use
platform_get_irq_optional() instead of platform_get_irq().
Fixes: 5df186e2ef ("usb: xhci: tegra: Support USB wakeup function for Tegra234")
Cc: stable <stable@kernel.org>
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Signed-off-by: Wei-Cheng Chen <weichengc@nvidia.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://patch.msgid.link/20260112145653.95691-1-weichengc@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 9beeee6584 ("USB: EHCI: log a warning if ehci-hcd is not
loaded first") said that ehci-hcd should be loaded before ohci-hcd and
uhci-hcd. However, commit 05c92da0c5 ("usb: ohci/uhci - add soft
dependencies on ehci_pci") only makes ohci-pci/uhci-pci depend on ehci-
pci, which is not enough and we may still see the warnings in boot log.
To eliminate the warnings we should make ohci-hcd/uhci-hcd depend on
ehci-hcd. But Alan said that the warning introduced by 9beeee6584
is bogus, we only need the soft dependencies in the PCI level rather
than the HCD level.
However, there is really another neccessary soft dependencies between
ohci-platform/uhci-platform and ehci-platform, which is added by this
patch. The boot logs are below.
1. ohci-platform loaded before ehci-platform:
ohci-platform 1f058000.usb: Generic Platform OHCI controller
ohci-platform 1f058000.usb: new USB bus registered, assigned bus number 1
ohci-platform 1f058000.usb: irq 28, io mem 0x1f058000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 4 ports detected
Warning! ehci_hcd should always be loaded before uhci_hcd and ohci_hcd, not after
usb 1-4: new low-speed USB device number 2 using ohci-platform
ehci-platform 1f050000.usb: EHCI Host Controller
ehci-platform 1f050000.usb: new USB bus registered, assigned bus number 2
ehci-platform 1f050000.usb: irq 29, io mem 0x1f050000
ehci-platform 1f050000.usb: USB 2.0 started, EHCI 1.00
usb 1-4: device descriptor read/all, error -62
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 4 ports detected
usb 1-4: new low-speed USB device number 3 using ohci-platform
input: YSPRINGTECH USB OPTICAL MOUSE as /devices/platform/bus@10000000/1f058000.usb/usb1/1-4/1-4:1.0/0003:10C4:8105.0001/input/input0
hid-generic 0003:10C4:8105.0001: input,hidraw0: USB HID v1.11 Mouse [YSPRINGTECH USB OPTICAL MOUSE] on usb-1f058000.usb-4/input0
2. ehci-platform loaded before ohci-platform:
ehci-platform 1f050000.usb: EHCI Host Controller
ehci-platform 1f050000.usb: new USB bus registered, assigned bus number 1
ehci-platform 1f050000.usb: irq 28, io mem 0x1f050000
ehci-platform 1f050000.usb: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 4 ports detected
ohci-platform 1f058000.usb: Generic Platform OHCI controller
ohci-platform 1f058000.usb: new USB bus registered, assigned bus number 2
ohci-platform 1f058000.usb: irq 29, io mem 0x1f058000
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 4 ports detected
usb 2-4: new low-speed USB device number 2 using ohci-platform
input: YSPRINGTECH USB OPTICAL MOUSE as /devices/platform/bus@10000000/1f058000.usb/usb2/2-4/2-4:1.0/0003:10C4:8105.0001/input/input0
hid-generic 0003:10C4:8105.0001: input,hidraw0: USB HID v1.11 Mouse [YSPRINGTECH USB OPTICAL MOUSE] on usb-1f058000.usb-4/input0
In the later case, there is no re-connection for USB-1.0/1.1 devices,
which is expected.
Cc: stable <stable@kernel.org>
Reported-by: Shengwen Xiao <atzlinux@sina.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20260112084802.1995923-1-chenhuacai@loongson.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now that the upstream code has been getting broader test coverage by our
users we occasionally see issues with USB2 devices plugged in during boot.
Before Linux is running, the USB2 PHY has usually been running in device
mode and it turns out that sometimes host->device or device->host
transitions don't work.
The root cause: If the role inside the USB2 PHY is re-configured when it
has already been powered on or when dwc3 has already enabled the ULPI
interface the new configuration sometimes doesn't take affect until dwc3
is reset again. Fix this rare issue by configuring the role much earlier.
Note that the USB3 PHY does not suffer from this issue and actually
requires dwc3 to be up before the correct role can be configured there.
Reported-by: James Calligeros <jcalligeros99@gmail.com>
Reported-by: Janne Grunau <j@jannau.net>
Fixes: 0ec946d32e ("usb: dwc3: Add Apple Silicon DWC3 glue layer driver")
Cc: stable <stable@kernel.org>
Tested-by: Janne Grunau <j@jannau.net>
Reviewed-by: Janne Grunau <j@jannau.net>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Sven Peter <sven@kernel.org>
Link: https://patch.msgid.link/20260109-dwc3-apple-usb2phy-fix-v2-1-ab6b041e3b26@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The ChipIdea UDC driver can encounter "not page aligned sg buffer"
errors when a USB device is reconnected after being disconnected
during an active transfer. This occurs because _ep_nuke() returns
requests to the gadget layer without properly unmapping DMA buffers
or cleaning up scatter-gather bounce buffers.
Root cause:
When a disconnect happens during a multi-segment DMA transfer, the
request's num_mapped_sgs field and sgt.sgl pointer remain set with
stale values. The request is returned to the gadget driver with status
-ESHUTDOWN but still has active DMA state. If the gadget driver reuses
this request on reconnect without reinitializing it, the stale DMA
state causes _hardware_enqueue() to skip DMA mapping (seeing non-zero
num_mapped_sgs) and attempt to use freed/invalid DMA addresses,
leading to alignment errors and potential memory corruption.
The normal completion path via _hardware_dequeue() properly calls
usb_gadget_unmap_request_by_dev() and sglist_do_debounce() before
returning the request. The _ep_nuke() path must do the same cleanup
to ensure requests are returned in a clean, reusable state.
Fix:
Add DMA unmapping and bounce buffer cleanup to _ep_nuke() to mirror
the cleanup sequence in _hardware_dequeue():
- Call usb_gadget_unmap_request_by_dev() if num_mapped_sgs is set
- Call sglist_do_debounce() with copy=false if bounce buffer exists
This ensures that when requests are returned due to endpoint shutdown,
they don't retain stale DMA mappings. The 'false' parameter to
sglist_do_debounce() prevents copying data back (appropriate for
shutdown path where transfer was aborted).
Signed-off-by: Mario Peter <mario.peter@leica-geosystems.com>
Reviewed-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://patch.msgid.link/20260108165902.795354-1-mario.peter@leica-geosystems.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently the wakeup and controller interrupt name are same. It's not
easy to find the correct one in /proc/interrupt at the first glance.
Rename the wakeup interrupt name for better distinction.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://patch.msgid.link/20260112110408.3263954-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we don't have a usb3 phy we don't need to assert the core resets.
Deassert them even if we didn't assert them to support booting when the
bootloader never released the core from reset.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20260106171018.501612-1-sean.anderson@linux.dev
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It turns out that warning about which USB host controller is loaded
before another one doesn't really matter. All that really is needed is
the PCI softdep module loading logic, which has been present in the
kernel ever since commit 05c92da0c5 ("usb: ohci/uhci - add soft
dependencies on ehci_pci")
So remove the warning messages, they are not useful, not needed, and
only confuse people. As can be seen in the discussion at
https://lore.kernel.org/r/20251230080014.3934590-1-chenhuacai@loongson.cn
Cc: Huacai Chen <chenhuacai@loongson.cn>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/2026010739-diffuser-shelter-e31c@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Do dwc3 core auto suspend enable for device and disable for host
, this can make sure dwc3 core device auto suspend setting is
correct all the time, the background of disable dwc3 core device
auto suspend is to make its parent device suspend immediately
(so wakeup enable can be enabled) after xhci-plat device suspended,
for device mode, we keep the dwc3 core device auto suspend is to
give some wait for gadget to be enumerated.
Note: It's a temporary solution until we switch to using the new
flatten model.
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260108081433.2119328-3-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It's confuse to let "dwc3" represent a platform_device, because "dwc3"
may also represent a dwc3 core structure. Rename it for better
distinction.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260108081433.2119328-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Call dwc3_pre_set_role() to support both extcon and otg usecase, so that
the glue driver can do proper action in case of role changes.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://patch.msgid.link/20260108081433.2119328-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently, DMA_FROM_DEVICE is used when attaching DMABUFs to IN
endpoints and DMA_TO_DEVICE for OUT endpoints. This is inverted from
how it should be.
The result is IOMMU read-only mappings placed on OUT queues,
triggering arm-smmu write faults.
Put differently, OUT endpoints flow data from host -> gadget, meaning
the UDC peripheral needs to have write access to the buffer to fill it
with the incoming data.
This commit flips the directions and updates the implicit-sync helpers
so IN endpoints act as readers and OUT endpoints as writers.
Signed-off-by: Sam Day <me@samcday.com>
Tested-by: David Heidelberg <david@ixit.cz> # OnePlus 6T on sdm845-next-20251119
Link: https://patch.msgid.link/20260108-ffs-dmabuf-ioctl-fix-v1-2-e51633891a81@samcday.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When ffs_epfile_ioctl handles FUNCTIONFS_DMABUF_* ioctls, it's currently
falling through when copy_from_user fails.
However, this fallthrough isn't being checked properly, so the handler
continues executing further than it should. It then tries the secondary
dispatch where it ultimately gives up and returns -ENOTTY.
The end result is invalid ioctl invocations will yield a -ENOTTY rather
than an -EFAULT.
It's a common pattern elsewhere in the kernel code to directly return
-EFAULT when copy_from_user fails. So we update ffs_epfile_ioctl to do
the same and fix this issue.
Signed-off-by: Sam Day <me@samcday.com>
Link: https://patch.msgid.link/20260108-ffs-dmabuf-ioctl-fix-v1-1-e51633891a81@samcday.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In usbg_submit_command(), which handles the UAS protocol, the 'data_len'
member of the 'usbg_cmd' structure was left uninitialized by the
logic, relying instead on the zeroing performed by usbg_get_cmd().
In contrast, the BOT path (bot_submit_command) explicitly initializes
this field from the Command Block Wrapper (CBW). This discrepancy is
evident in error handling paths where __target_init_cmd() is called
using cmd->data_len.
Explicitly initialize cmd->data_len to 0 in the UAS path and use this
variable when calling target_submit_cmd(). This ensures architectural
consistency between the UAS and BOT protocols within the driver and
avoids reliance on implicit memory state during error transitions.
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com>
Link: https://patch.msgid.link/20260107190622.26070-1-jiashengjiangcool@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Fintek F81532A/534A/535/536 family relies on the
F81534A_CTRL_CMD_ENABLE_PORT (116h) register during initialization to
both determine serial port status and control port creation. If the
driver experiences fast load/unload cycles, the device state may becomes
unstable, resulting in the incomplete generation of serial ports.
Performing a dummy read operation on the register prior to the initial
write command resolves the issue. This clears the device's stale internal
state. Subsequent write operations will correctly generate all serial
ports.
This patch also removes the retry loop in f81534a_ctrl_set_register()
because the stale state has been fixed.
Tested on: HygonDM1SLT(Hygon C86 3250 8-core Processor)
Signed-off-by: Ji-Ze Hong (Peter Hong) <peter_hong@fintek.com.tw>
Signed-off-by: Johan Hovold <johan@kernel.org>
Add PCI_VENDOR_ID_ASPEED to the shared pci_ids.h header and remove the
duplicate local definition from ehci-pci.c.
This prepares for adding a PCI quirk for ASPEED devices.
Signed-off-by: Nirmoy Das <nirmoyd@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://patch.msgid.link/20251217154529.377586-1-nirmoyd@nvidia.com
To allow the return type of pm_runtime_put() to be changed to void in the
future, modify usb_autopm_put_interface_async() to discard the return
value of pm_runtime_put().
That value is merely used in a debug comment printed by the function in
question and it is not a particularly useful piece of information
because pm_runtime_put() does not guarantee that the device will be
suspended even if it successfully queues up a work item to check
whether or not the device can be suspended.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/5058509.GXAFRqVoOG@rafael.j.wysocki
Add USB_QUIRK_NO_BOS quirk flag to skip requesting the BOS descriptor
for devices that cannot handle it.
Add Elgato 4K X (0fd9:009b) to the quirk table. This device hangs when
the BOS descriptor is requested at SuperSpeed Plus (10Gbps).
Link: https://bugzilla.kernel.org/show_bug.cgi?id=220027
Cc: stable <stable@kernel.org>
Signed-off-by: Johannes Brüderl <johannes.bruederl@gmail.com>
Link: https://patch.msgid.link/20251207090220.14807-1-johannes.bruederl@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If ports are defined in the tcpc main node, fwnode_usb_role_switch_get()
returns an error, meaning usb_role_switch_get() (which would succeed)
never gets a chance to run as port->role_sw isn't NULL, causing a
regression on devices where this is the case.
Fix this by turning the NULL check into IS_ERR_OR_NULL(), so
usb_role_switch_get() can actually run and the device get properly probed.
Fixes: 2d8713f807 ("tcpm: switch check for role_sw device with fw_node")
Cc: stable <stable@kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Arnaud Ferraris <arnaud.ferraris@collabora.com>
Link: https://patch.msgid.link/20260105-fix-ppp-power-v2-1-6924f5a41224@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Synopsys renamed DWC_usb32 IP to DWC_usb4 as of IP version 1.30. No
functional change except checking for the IP_NAME here. The driver will
treat the new IP_NAME as if it's DWC_usb32. Additional features for USB4
will be introduced and checked separately.
Cc: stable@vger.kernel.org
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/e6f1827754c7a7ddc5eb7382add20bfe3a9b312f.1767390747.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently, the net_device is allocated in ncm_alloc_inst() and freed in
ncm_free_inst(). This ties the network interface's lifetime to the
configuration instance rather than the USB connection (bind/unbind).
This decoupling causes issues when the USB gadget is disconnected where
the underlying gadget device is removed. The net_device can outlive its
parent, leading to dangling sysfs links and NULL pointer dereferences
when accessing the freed gadget device.
Problem 1: NULL pointer dereference on disconnect
Unable to handle kernel NULL pointer dereference at virtual address
0000000000000000
Call trace:
__pi_strlen+0x14/0x150
rtnl_fill_ifinfo+0x6b4/0x708
rtmsg_ifinfo_build_skb+0xd8/0x13c
rtmsg_ifinfo+0x50/0xa0
__dev_notify_flags+0x4c/0x1f0
dev_change_flags+0x54/0x70
do_setlink+0x390/0xebc
rtnl_newlink+0x7d0/0xac8
rtnetlink_rcv_msg+0x27c/0x410
netlink_rcv_skb+0x134/0x150
rtnetlink_rcv+0x18/0x28
netlink_unicast+0x254/0x3f0
netlink_sendmsg+0x2e0/0x3d4
Problem 2: Dangling sysfs symlinks
console:/ # ls -l /sys/class/net/ncm0
lrwxrwxrwx ... /sys/class/net/ncm0 ->
/sys/devices/platform/.../gadget.0/net/ncm0
console:/ # ls -l /sys/devices/platform/.../gadget.0/net/ncm0
ls: .../gadget.0/net/ncm0: No such file or directory
Move the net_device allocation to ncm_bind() and deallocation to
ncm_unbind(). This ensures the network interface exists only when the
gadget function is actually bound to a configuration.
To support pre-bind configuration (e.g., setting interface name or MAC
address via configfs), cache user-provided options in f_ncm_opts
using the gether_opts structure. Apply these cached settings to the
net_device upon creation in ncm_bind().
Preserve the use-after-free fix from commit 6334b8e455 ("usb: gadget:
f_ncm: Fix UAF ncm object at re-bind after usb ep transport error").
Check opts->net in ncm_set_alt() and ncm_disable() to ensure
gether_disconnect() runs only if a connection was established.
Fixes: 40d133d7f5 ("usb: gadget: f_ncm: convert to new function interface with backward compatibility")
Cc: stable@kernel.org
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20251230-ncm-refactor-v1-3-793e347bc7a7@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The net_device in the u_ether framework currently requires explicit
calls to unregister and free the device.
Introduce gether_unregister_free_netdev() and the corresponding
auto-cleanup macro. This ensures that if a net_device is registered, it
is properly unregistered and the associated work queue is flushed before
the memory is freed.
This is a preparatory patch to simplify error handling paths in gadget
drivers by removing the need for explicit goto labels for net_device
cleanup.
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20251230-ncm-refactor-v1-2-793e347bc7a7@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently, the net_device is allocated when the function instance is
created (e.g., in ncm_alloc_inst()). While this allows userspace to
configure the device early, it decouples the net_device lifecycle from
the actual USB connection state (bind/unbind). The goal is to defer
net_device creation to the bind callback to properly align the lifecycle
with its parent gadget device.
However, deferring net_device allocation would prevent userspace from
configuring parameters (like interface name or MAC address) before the
net_device exists.
Introduce a new structure, struct gether_opts, associated with the
usb_function_instance, to cache settings independently of the
net_device. These settings include the interface name pattern, MAC
addresses (device and host), queue multiplier, and address assignment
type.
New helper functions are added:
- gether_setup_opts_default(): Initializes struct gether_opts with
defaults, including random MAC addresses.
- gether_apply_opts(): Applies the cached options from a struct
gether_opts to a valid net_device.
To expose these options to userspace, new configfs macros
(USB_ETHER_OPTS_ITEM and USB_ETHER_OPTS_ATTR_*) are defined in
u_ether_configfs.h. These attributes are part of the function
instance's configfs group.
This refactoring is a preparatory step. It allows the subsequent patch
to safely move the net_device allocation from the instance creation
phase to the bind phase without losing the ability to pre-configure
the interface via configfs.
Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20251230-ncm-refactor-v1-1-793e347bc7a7@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
EXTCON_TCSS_CROS_EC isn't used anywhere else in the kernel tree,
so drop it from this Kconfig file.
(unless it should be EXTCON_USBC_CROS_EC ?)
Fixes: f1a2241778 ("usb: typec: ucsi: Implement ChromeOS UCSI driver")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://patch.msgid.link/20251228190604.2484082-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The fhci-hcd driver does not really depend on any symbols controlled by
the OF_GPIO switch. It was probably added by accident so remove it.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260106132706.45433-1-bartosz.golaszewski@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support to configure maxburst via configfs for bulk endpoints.
Update gadget documentation describing the new configfs property.
Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Link: https://patch.msgid.link/20251227145224.2091397-1-krishna.kurapati@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The last user of the platform driver was a Blackfin BF533 powered board,
and it was removed in commit 4ba66a9760 ("arch: remove blackfin port")
along with the whole Blackfin architecture support 7 years ago.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://patch.msgid.link/20251226000237.1440642-1-vz@mleia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold <johan@kernel.org> says:
The new buffer management code has not been tested or reviewed properly
and breaks boot of machines like the Lenovo ThinkPad X13s.
Fixing this will require designing a proper interface for managing these
transactions, something which most likely involves reverting most of the
offending commit anyway.
Revert the broken code to fix the regression and let Intel come up with
a properly tested implementation for a later kernel.
Link: https://lore.kernel.org/r/20251222152204.2846-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 3e082978c3.
The new buffer management code has not been tested or reviewed properly
and breaks boot of machines like the Lenovo ThinkPad X13s:
Unable to handle kernel NULL pointer dereference at virtual address
0000000000000000
CPU: 0 UID: 0 PID: 813 Comm: kworker/0:3 Not tainted 6.19.0-rc2 #26 PREEMPT
Hardware name: LENOVO 21BYZ9SRUS/21BYZ9SRUS, BIOS N3HET87W (1.59 ) 12/05/2023
Workqueue: events ucsi_handle_connector_change [typec_ucsi]
Call trace:
ucsi_sync_control_common+0xe4/0x1ec [typec_ucsi] (P)
ucsi_run_command+0xcc/0x194 [typec_ucsi]
ucsi_send_command_common+0x84/0x2a0 [typec_ucsi]
ucsi_get_connector_status+0x48/0x78 [typec_ucsi]
ucsi_handle_connector_change+0x5c/0x4f4 [typec_ucsi]
process_one_work+0x208/0x60c
worker_thread+0x244/0x388
The new code completely ignores concurrency so that the message length
can be updated while a transaction is ongoing. In the above case, the
length ends up being modified by another thread while processing an ack
so that the NULL cci pointer is dereferenced.
Fixing this will require designing a proper interface for managing these
transactions, something which most likely involves reverting most of the
offending commit anyway.
Revert the broken code to fix the regression and let Intel come up with
a properly tested implementation for a later kernel.
Fixes: 3e082978c3 ("usb: typec: ucsi: Update UCSI structure to have message in and message out fields")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20251222152204.2846-5-johan@kernel.org
This reverts commit db0028637c.
The new buffer management code that this feature relies on is broken so
revert for now.
As for the in buffer, nothing prevents the out message size and buffer
from being modified while the message is being processed due to lack of
serialisation.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20251222152204.2846-4-johan@kernel.org
This reverts commit 775fae520e.
The new buffer management code that this relies on is broken so revert
for now.
It also looks like the error handling needs some more thought as the
message out size is not reset on errors.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20251222152204.2846-3-johan@kernel.org
This reverts commit 1b474ee01f.
The new buffer management code that this feature relies on is broken so
revert for now.
The interface for writing data and support for UCSI_SET_PDOS looks like
it could use some more thought as well.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20251222152204.2846-2-johan@kernel.org
This reverts commit 14ad4c10d5.
The originally offending commit will be reverted instead of this fix up
at this point in time, so revert this fix.
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Mario Limonciello (AMD) <superm1@kernel.org>
Cc: stable <stable@kernel.org>
Cc: Johan Hovold <johan@kernel.org>
Fixes: 14ad4c10d5 ("usb: typec: ucsi: Fix null pointer dereference in ucsi_sync_control_common")
Link: https://lore.kernel.org/r/20251222152204.2846-1-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 5106dbab44.
There are reported issues in this file, so revert the commit for now so
that the original offending changes can be reverted and working systems
can be restored. This can come back at a later time if it is rebased
yet-again (sorry.)
Cc: stable <stable@kernel.org>
Cc: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20251222152204.2846-1-johan@kernel.org
Fixes: 5106dbab44 ("usb: typec: ucsi: Get connector status after enable notifications")
Cc: Kenneth R. Crudup <kenny@panix.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Hsin-Te Yuan <yuanhsinte@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Error labels should be named after what they do rather than after from
where they are jumped to.
Rename the probe error labels for consistency and to improve
readability.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://patch.msgid.link/20251218153519.19453-6-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Error labels should be named after what they do rather than after from
where they are jumped to.
Rename the probe error labels for consistency and to improve
readability.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://patch.msgid.link/20251218153519.19453-5-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A recent change fixing a device reference leak in a UDC driver
introduced a potential use-after-free in the non-OF case as the
isp1301_get_client() helper only increases the reference count for the
returned I2C device in the OF case.
Increment the reference count also for non-OF so that the caller can
decrement it unconditionally.
Note that this is inherently racy just as using the returned I2C device
is since nothing is preventing the PHY driver from being unbound while
in use.
Fixes: c84117912b ("USB: lpc32xx_udc: Fix error handling in probe")
Cc: stable@vger.kernel.org
Cc: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://patch.msgid.link/20251218153519.19453-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A recent change fixing a device reference leak introduced a clock
imbalance by reusing an error path so that the clock may be disabled
before having been enabled.
Note that the clock framework allows for passing in NULL clocks so there
is no risk for a NULL pointer dereference.
Also drop the bogus I2C client NULL check added by the offending commit
as the pointer has already been verified to be non-NULL.
Fixes: c84117912b ("USB: lpc32xx_udc: Fix error handling in probe")
Cc: stable@vger.kernel.org
Cc: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://patch.msgid.link/20251218153519.19453-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Originally, the notification for connector change will be enabled after
the first read of the connector status. Therefore, if the event happens
during this window, it will be missing and make the status unsynced.
Get the connector status only after enabling the notification for
connector change to ensure the status is synced.
Fixes: c1b0bc2dab ("usb: typec: Add support for UCSI interface")
Cc: stable <stable@kernel.org>
Tested-by: Kenneth R. Crudup <kenny@panix.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Hsin-Te Yuan <yuanhsinte@chromium.org>
Link: https://patch.msgid.link/20251218-ucsi-v7-1-aea83e83fb12@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We cannot determine which models require the NO_ATA_1X and
IGNORE_RESIDUE quirks aside from the EL-R12 optical drive device.
Fixes: 955a48a535 ("usb: usb-storage: No additional quirks need to be added to the EL-R12 optical drive.")
Signed-off-by: Chen Changcheng <chenchangcheng@kylinos.cn>
Link: https://patch.msgid.link/20251218012318.15978-1-chenchangcheng@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support for the DWC3 USB controller found on Google Tensor G5
(codename: laguna). The controller features dual-role functionality
and hibernation.
The primary focus is implementing hibernation support in host mode,
enabling the controller to enter a low-power state (D3). This is
particularly relevant during system power state transition and
runtime power management for power efficiency.
Highlights:
- Align suspend callback with dwc3_suspend_common() for deciding
between a full teardown and hibernation in host mode.
- Integration with `psw` (power switchable) and `top` power domains,
managing their states and device links to support hibernation.
- A notifier callback dwc3_google_usb_psw_pd_notifier() for
`psw` power domain events to manage controller state
transitions to/from D3.
- Coordination of the `non_sticky` reset during power state
transitions, asserting it on D3 entry and deasserting on D0 entry
in hibernation scenario.
- Handling of high-speed and super-speed PME interrupts
that are generated by remote wakeup during hibernation.
Co-developed-by: Joy Chakraborty <joychakr@google.com>
Signed-off-by: Joy Chakraborty <joychakr@google.com>
Co-developed-by: Naveen Kumar <mnkumar@google.com>
Signed-off-by: Naveen Kumar <mnkumar@google.com>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Roy Luo <royluo@google.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20251218-controller-v10-2-4047c9077274@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
'struct configfs_item_operations' and 'configfs_group_operations' are not
modified in these drivers.
Constifying these structures moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.
On a x86_64, with allmodconfig, as an example:
Before:
======
text data bss dec hex filename
65061 20968 256 86285 1510d drivers/usb/gadget/configfs.o
After:
=====
text data bss dec hex filename
66181 19848 256 86285 1510d drivers/usb/gadget/configfs.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/49cec1cb84425f854de80b6d69b53a5a3cda8189.1766164523.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When clk_bulk_prepare_enable() fails, the error path jumps to
err_resetc_assert, skipping clk_bulk_put_all() and leaking the
clock references acquired by clk_bulk_get_all().
Add err_clk_put_all label to properly release clock resources
in all error paths.
Found via static analysis and code review.
Fixes: c0c61471ef ("usb: dwc3: of-simple: Convert to bulk clk API")
Cc: stable <stable@kernel.org>
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20251211064937.2360510-1-linmq006@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add missing null check for cci parameter before dereferencing it in
ucsi_sync_control_common(). The function can be called with cci=NULL
from ucsi_acknowledge(), which leads to a null pointer dereference
when accessing *cci in the condition check.
The crash occurs because the code checks if cci is not null before
calling ucsi->ops->read_cci(ucsi, cci), but then immediately
dereferences cci without a null check in the following condition:
(*cci & UCSI_CCI_COMMAND_COMPLETE).
KASAN trace:
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
RIP: 0010:ucsi_sync_control_common+0x2ae/0x4e0 [typec_ucsi]
Cc: stable <stable@kernel.org>
Fixes: 667ecac558 ("usb: typec: ucsi: return CCI and message from sync_control callback")
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20251216122210.5457-1-superm1@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
lpc32xx_udc_probe() acquires an i2c_client reference through
isp1301_get_client() but fails to release it in both error handling
paths and the normal removal path. This could result in a reference
count leak for the I2C device, preventing proper cleanup and potentially
leading to resource exhaustion. Add put_device() to release the
reference in the probe failure path and in the remove function.
Calling path: isp1301_get_client() -> of_find_i2c_device_by_node() ->
i2c_find_device_by_fwnode(). As comments of i2c_find_device_by_fwnode()
says, 'The user must call put_device(&client->dev) once done with the
i2c client.'
Found by code review.
Cc: stable <stable@kernel.org>
Fixes: 24a28e4283 ("USB: gadget driver for LPC32xx")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Link: https://patch.msgid.link/20251215020931.15324-1-make24@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The delayed work item otg_event is initialized in fsl_otg_conf() and
scheduled under two conditions:
1. When a host controller binds to the OTG controller.
2. When the USB ID pin state changes (cable insertion/removal).
A race condition occurs when the device is removed via fsl_otg_remove():
the fsl_otg instance may be freed while the delayed work is still pending
or executing. This leads to use-after-free when the work function
fsl_otg_event() accesses the already freed memory.
The problematic scenario:
(detach thread) | (delayed work)
fsl_otg_remove() |
kfree(fsl_otg_dev) //FREE| fsl_otg_event()
| og = container_of(...) //USE
| og-> //USE
Fix this by calling disable_delayed_work_sync() in fsl_otg_remove()
before deallocating the fsl_otg structure. This ensures the delayed work
is properly canceled and completes execution prior to memory deallocation.
This bug was identified through static analysis.
Fixes: 0807c500a1 ("USB: add Freescale USB OTG Transceiver driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Link: https://patch.msgid.link/20251205034831.12846-1-duoming@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Selecting DRM_AUX_HPD_BRIDGE is not possible from a built-in driver when
CONFIG_DRM=m:
WARNING: unmet direct dependencies detected for DRM_AUX_HPD_BRIDGE
Depends on [m]: HAS_IOMEM [=y] && DRM [=m] && DRM_BRIDGE [=y] && OF [=y]
Selected by [y]:
- UCSI_HUAWEI_GAOKUN [=y] && USB_SUPPORT [=y] && TYPEC [=y] && TYPEC_UCSI [=y] && EC_HUAWEI_GAOKUN [=y] && DRM_BRIDGE [=y] && OF [=y]
Add the same dependency we have in similar drivers to work around this.
Fixes: 00327d7f2c ("usb: typec: ucsi: add Huawei Matebook E Go ucsi driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251204101111.1035975-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On some platforms, switching USB roles from host to device can trigger
controller faults due to premature PHY power-down. This occurs when the
PHY is disabled too early during teardown, causing synchronization
issues between the PHY and controller.
Keep susphy enabled during dwc3_host_exit() and dwc3_gadget_exit()
ensures the PHY remains in a low-power state capable of handling
required commands during role switch.
Cc: stable <stable@kernel.org>
Fixes: 6d73572206 ("usb: dwc3: core: Prevent phy suspend during init")
Suggested-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Udipto Goswami <udipto.goswami@oss.qualcomm.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20251126054221.120638-1-udipto.goswami@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ucsi_psy_get_voltage_max and ucsi_psy_get_current_max are calculated
using whichever pdo is in the last position of the src_pdos array, presuming
it to be a fixed pdo, so the pdo_fixed_voltage or pdo_max_current
helpers are used on that last pdo.
However, non-Fixed PDOs such as Battery PDOs, Augmented PDOs (used for AVS and
for PPS) may exist, and are always at the end of the array if they do.
In the event one of these more advanced chargers are attached the helpers for
fixed return mangled values.
Here's an example case of a Google Pixel Flex Dual Port 67W USB-C Fast Charger
with PPS support:
POWER_SUPPLY_NAME=ucsi-source-psy-cros_ec_ucsi.4.auto2
POWER_SUPPLY_TYPE=USB
POWER_SUPPLY_CHARGE_TYPE=Standard
POWER_SUPPLY_USB_TYPE=C [PD] PD_PPS PD_DRP
POWER_SUPPLY_ONLINE=1
POWER_SUPPLY_VOLTAGE_MIN=5000000
POWER_SUPPLY_VOLTAGE_MAX=13400000
POWER_SUPPLY_VOLTAGE_NOW=20000000
POWER_SUPPLY_CURRENT_MAX=5790000
POWER_SUPPLY_CURRENT_NOW=3250000
Voltage Max is reading as 13.4V, but that's an incorrect decode of the PPS
APDO in the last position. Same goes for CURRENT_MAX. 5.79A is incorrect.
Instead, enumerate through the src_pdos and filter just for Fixed PDOs for
now, and find the one with the highest voltage and current respectively.
After, from the same charger:
POWER_SUPPLY_NAME=ucsi-source-psy-cros_ec_ucsi.4.auto2
POWER_SUPPLY_TYPE=USB
POWER_SUPPLY_CHARGE_TYPE=Standard
POWER_SUPPLY_USB_TYPE=C [PD] PD_PPS PD_DRP
POWER_SUPPLY_ONLINE=1
POWER_SUPPLY_VOLTAGE_MIN=5000000
POWER_SUPPLY_VOLTAGE_MAX=20000000
POWER_SUPPLY_VOLTAGE_NOW=20000000
POWER_SUPPLY_CURRENT_MAX=4000000
POWER_SUPPLY_CURRENT_NOW=3250000
Signed-off-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251208174918.289394-3-bleung@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
current_now would always return 0 in for non-PD power sources, and the
negotiated current based on the Request RDO in PD mode.
For USB Type-C current or legacy Default USB cases current_now will present
the max value of those modes, as that is the equivalent of the Request RDO
in PD.
Also, current_now will now return 0 when the port is disconnected to match
the same behavior of current_max.
Signed-off-by: Benson Leung <bleung@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251208174918.289394-2-bleung@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When using f_midi from configfs the USB MIDI interface string is hardcoded
to 'MIDI function'.
This USB string descriptor is used by some third-party OS or software to
display the name of the MIDI device
Since we add an additional string option a new macro block was created to
factorize declarations
Signed-off-by: Victor Krawiec <victor.krawiec@arturia.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20251209164006.143219-1-victor.krawiec@arturia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The DRM may want to register a notifier on the typec bus to know when
a typec altmode device is added, and distinguish between different
types of typec altmode device.
Export these things.
Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251208015500.94-3-kernel@airkyi.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The port and plug altmodes can't be bound to the altmode
drivers because the altmode drivers are meant for partner
communication using the VDM (vendor defined messages), but
they can still be part of the bus. The bus will make sure
that the normal bus notifications are available also with
the port altmodes.
The previously used common device type for all alternate
modes is replaced with separate dedicated device types for
port, plug, and partner alternate modes.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
Link: https://patch.msgid.link/20251208015500.94-2-kernel@airkyi.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support for the AST2700 SOC in the vhub gadget driver. AST2700
uses a 64-bit DMA addressing capability, so select 64-bit DMA mask
for compatible. AST2700 vhub also requires an reset line, so hook
up the optional reset control and assert/deassert it during probe
and remove.
Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Link: https://patch.msgid.link/20251128-upstream_vhub-v2-2-1fa66a5833c2@aspeedtech.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here is the big set of USB and Thunderbolt driver updates for 6.19-rc1.
Nothing major here, just lots of tiny updates for most of the common USB
drivers. Included in here are:
- more xhci driver updates and fixes
- Thunderbolt driver cleanups
- usb serial driver updates
- typec driver updates
- USB tracepoint additions
- dwc3 driver updates, including support for Apple hardware
- lots of other smaller driver updates and cleanups
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt driver updates for
6.19-rc1. Nothing major here, just lots of tiny updates for most of
the common USB drivers. Included in here are:
- more xhci driver updates and fixes
- Thunderbolt driver cleanups
- usb serial driver updates
- typec driver updates
- USB tracepoint additions
- dwc3 driver updates, including support for Apple hardware
- lots of other smaller driver updates and cleanups
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (161 commits)
usb: gadget: tegra-xudc: Always reinitialize data toggle when clear halt
USB: serial: option: move Telit 0x10c7 composition in the right place
USB: serial: option: add Telit Cinterion FE910C04 new compositions
usb: typec: ucsi: fix use-after-free caused by uec->work
usb: typec: ucsi: fix probe failure in gaokun_ucsi_probe()
usb: dwc3: core: Remove redundant comment in core init
usb: phy: Initialize struct usb_phy list_head
USB: serial: option: add Foxconn T99W760
usb: usb-storage: No additional quirks need to be added to the EL-R12 optical drive.
usb: typec: hd3ss3220: Enable VBUS based on ID pin state
dt-bindings: usb: ti,hd3ss3220: Add support for VBUS based on ID state
usb: typec: anx7411: add WQ_PERCPU to alloc_workqueue users
USB: add WQ_PERCPU to alloc_workqueue users
dt-bindings: usb: dwc3-xilinx: Describe the reset constraint for the versal platform
drivers/usb/storage: use min() instead of min_t()
usb: raw-gadget: cap raw_io transfer length to KMALLOC_MAX_SIZE
usb: ohci-da8xx: remove unused platform data
usb: gadget: functionfs: use dma_buf_unmap_attachment_unlocked() helper
usb: uas: reduce time under spinlock
usb: dwc3: eic7700: Add EIC7700 USB driver
...
dentries of created objects in dcache (and undo it when removing those).
Reference is grabbed and not released, but it's not actually _stored_
anywhere. That works, but it's hard to follow and verify; among other
things, we have no way to tell _which_ of the increments is intended
to be an unpaired one. Worse, on removal we need to decide whether
the reference had already been dropped, which can be non-trivial if
that removal is on umount and we need to figure out if this dentry is
pinned due to e.g. unlink() not done. Usually that is handled by using
kill_litter_super() as ->kill_sb(), but there are open-coded special
cases of the same (consider e.g. /proc/self).
Things get simpler if we introduce a new dentry flag (DCACHE_PERSISTENT)
marking those "leaked" dentries. Having it set claims responsibility
for +1 in refcount.
The end result this series is aiming for:
* get these unbalanced dget() and dput() replaced with new primitives that
would, in addition to adjusting refcount, set and clear persistency flag.
* instead of having kill_litter_super() mess with removing the remaining
"leaked" references (e.g. for all tmpfs files that hadn't been removed
prior to umount), have the regular shrink_dcache_for_umount() strip
DCACHE_PERSISTENT of all dentries, dropping the corresponding
reference if it had been set. After that kill_litter_super() becomes
an equivalent of kill_anon_super().
Doing that in a single step is not feasible - it would affect too many places
in too many filesystems. It has to be split into a series.
This work has really started early in 2024; quite a few preliminary pieces
have already gone into mainline. This chunk is finally getting to the
meat of that stuff - infrastructure and most of the conversions to it.
Some pieces are still sitting in the local branches, but the bulk of
that stuff is here.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull persistent dentry infrastructure and conversion from Al Viro:
"Some filesystems use a kinda-sorta controlled dentry refcount leak to
pin dentries of created objects in dcache (and undo it when removing
those). A reference is grabbed and not released, but it's not actually
_stored_ anywhere.
That works, but it's hard to follow and verify; among other things, we
have no way to tell _which_ of the increments is intended to be an
unpaired one. Worse, on removal we need to decide whether the
reference had already been dropped, which can be non-trivial if that
removal is on umount and we need to figure out if this dentry is
pinned due to e.g. unlink() not done. Usually that is handled by using
kill_litter_super() as ->kill_sb(), but there are open-coded special
cases of the same (consider e.g. /proc/self).
Things get simpler if we introduce a new dentry flag
(DCACHE_PERSISTENT) marking those "leaked" dentries. Having it set
claims responsibility for +1 in refcount.
The end result this series is aiming for:
- get these unbalanced dget() and dput() replaced with new primitives
that would, in addition to adjusting refcount, set and clear
persistency flag.
- instead of having kill_litter_super() mess with removing the
remaining "leaked" references (e.g. for all tmpfs files that hadn't
been removed prior to umount), have the regular
shrink_dcache_for_umount() strip DCACHE_PERSISTENT of all dentries,
dropping the corresponding reference if it had been set. After that
kill_litter_super() becomes an equivalent of kill_anon_super().
Doing that in a single step is not feasible - it would affect too many
places in too many filesystems. It has to be split into a series.
This work has really started early in 2024; quite a few preliminary
pieces have already gone into mainline. This chunk is finally getting
to the meat of that stuff - infrastructure and most of the conversions
to it.
Some pieces are still sitting in the local branches, but the bulk of
that stuff is here"
* tag 'pull-persistency' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (54 commits)
d_make_discardable(): warn if given a non-persistent dentry
kill securityfs_recursive_remove()
convert securityfs
get rid of kill_litter_super()
convert rust_binderfs
convert nfsctl
convert rpc_pipefs
convert hypfs
hypfs: swich hypfs_create_u64() to returning int
hypfs: switch hypfs_create_str() to returning int
hypfs: don't pin dentries twice
convert gadgetfs
gadgetfs: switch to simple_remove_by_name()
convert functionfs
functionfs: switch to simple_remove_by_name()
functionfs: fix the open/removal races
functionfs: need to cancel ->reset_work in ->kill_sb()
functionfs: don't bother with ffs->ref in ffs_data_{opened,closed}()
functionfs: don't abuse ffs_data_closed() on fs shutdown
convert selinuxfs
...
- Allow power-off for out-of-band wakeup-capable devices
- Drop the redundant call to dev_pm_domain_detach() for the amba bus
- Extend the genpd governor for CPUs to account for IPIs
pmdomain providers:
- bcm: Add support for BCM2712
- mediatek: Add support for MFlexGraphics power domains
- mediatek: Add support for MT8196 power domains
- qcom: Add RPMh power domain support for Kaanapali
- rockchip: Add support for RV1126B
pmdomain consumers:
- usb: dwc3: Enable out of band wakeup for i.MX95
- usb: chipidea: Enable out of band wakeup for i.MX95
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Merge tag 'pmdomain-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain updates from Ulf Hansson:
"pmdomain core:
- Allow power-off for out-of-band wakeup-capable devices
- Drop the redundant call to dev_pm_domain_detach() for the amba bus
- Extend the genpd governor for CPUs to account for IPIs
pmdomain providers:
- bcm: Add support for BCM2712
- mediatek: Add support for MFlexGraphics power domains
- mediatek: Add support for MT8196 power domains
- qcom: Add RPMh power domain support for Kaanapali
- rockchip: Add support for RV1126B
pmdomain consumers:
- usb: dwc3: Enable out of band wakeup for i.MX95
- usb: chipidea: Enable out of band wakeup for i.MX95"
* tag 'pmdomain-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (26 commits)
pmdomain: Extend the genpd governor for CPUs to account for IPIs
smp: Introduce a helper function to check for pending IPIs
pmdomain: mediatek: convert from clk round_rate() to determine_rate()
amba: bus: Drop dev_pm_domain_detach() call
pmdomain: bcm: bcm2835-power: Prepare to support BCM2712
pmdomain: mediatek: mtk-mfg: select MAILBOX in Kconfig
pmdomain: mediatek: Add support for MFlexGraphics
pmdomain: mediatek: Fix build-errors
cpuidle: psci: Replace deprecated strcpy in psci_idle_init_cpu
pmdomain: rockchip: Add support for RV1126B
pmdomain: mediatek: Add support for MT8196 HFRPSYS power domains
pmdomain: mediatek: Add support for MT8196 SCPSYS power domains
pmdomain: mediatek: Add support for secure HWCCF infra power on
pmdomain: mediatek: Add support for Hardware Voter power domains
pmdomain: qcom: rpmhpd: Add RPMh power domain support for Kaanapali
usb: dwc3: imx8mp: Set out of band wakeup for i.MX95
usb: chipidea: ci_hdrc_imx: Set out of band wakeup for i.MX95
usb: chipidea: core: detach power domain for ci_hdrc platform device
pmdomain: core: Allow power-off for out-of-band wakeup-capable devices
PM: wakeup: Add out-of-band system wakeup support for devices
...
- Introduce and document a QoS limit on CPU exit latency during wakeup
from suspend-to-idle (Ulf Hansson)
- Add support for building libcpupower statically (Zuo An)
- Add support for sending netlink notifications to user space on energy
model updates (Changwoo Mini, Peng Fan)
- Minor improvements to the Rust OPP interface (Tamir Duberstein)
- Fixes to scope-based pointers in the OPP library (Viresh Kumar)
- Use residency threshold in polling state override decisions in the
menu cpuidle governor (Aboorva Devarajan)
- Add sanity check for exit latency and target residency in the cpufreq
core (Rafael Wysocki)
- Use this_cpu_ptr() where possible in the teo governor (Christian
Loehle)
- Rework the handling of tick wakeups in the teo cpuidle governor to
increase the likelihood of stopping the scheduler tick in the cases
when tick wakeups can be counted as non-timer ones (Rafael Wysocki)
- Fix a reverse condition in the teo cpuidle governor and drop a
misguided target residency check from it (Rafael Wysocki)
- Clean up multiple minor defects in the teo cpuidle governor (Rafael
Wysocki)
- Update header inclusion to make it follow the Include What You Use
principle (Andy Shevchenko)
- Enable MSR-based RAPL PMU support in the intel_rapl power capping
driver and arrange for using it on the Panther Lake and Wildcat Lake
processors (Kuppuswamy Sathyanarayanan)
- Add support for Nova Lake and Wildcat Lake processors to the
intel_rapl power capping driver (Kaushlendra Kumar, Srinivas
Pandruvada)
- Add OPP and bandwidth support for Tegra186 (Aaron Kling)
- Optimizations for parameter array handling in the amd-pstate cpufreq
driver (Mario Limonciello)
- Fix for mode changes with offline CPUs in the amd-pstate cpufreq
driver (Gautham Shenoy)
- Preserve freq_table_sorted across suspend/hibernate in the cpufreq
core (Zihuan Zhang)
- Adjust energy model rules for Intel hybrid platforms in the
intel_pstate cpufreq driver and improve printing of debug messages
in it (Rafael Wysocki)
- Replace deprecated strcpy() in cpufreq_unregister_governor()
(Thorsten Blum)
- Fix duplicate hyperlink target errors in the intel_pstate cpufreq
driver documentation and use :ref: directive for internal linking in
it (Swaraj Gaikwad, Bagas Sanjaya)
- Add Diamond Rapids OOB mode support to the intel_pstate cpufreq
driver (Kuppuswamy Sathyanarayanan)
- Use mutex guard for driver locking in the intel_pstate driver and
eliminate some code duplication from it (Rafael Wysocki)
- Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra
Kumar)
- Minor improvements to various cpufreq drivers (Christian Marangi, Hal
Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu)
- Replace snprintf() with scnprintf() in show_trace_dev_match()
(Kaushlendra Kumar)
- Fix memory allocation error handling in pm_vt_switch_required()
(Malaya Kumar Rout)
- Introduce CALL_PM_OP() macro and use it to simplify code in
generic PM operations (Kaushlendra Kumar)
- Add module param to backtrace all CPUs in the device power management
watchdog (Sergey Senozhatsky)
- Rework message printing in swsusp_save() (Rafael Wysocki)
- Make it possible to change the number of hibernation compression
threads (Xueqin Luo)
- Clarify that only cgroup1 freezer uses PM freezer (Tejun Heo)
- Add document on debugging shutdown hangs to PM documentation and
correct a mistaken configuration option in it (Mario Limonciello)
- Shut down wakeup source timer before removing the wakeup source from
the list (Kaushlendra Kumar, Rafael Wysocki)
- Introduce new PMSG_POWEROFF event for system shutdown handling with
the help of PM device callbacks (Mario Limonciello)
- Make pm_test delay interruptible by wakeup events (Riwen Lu)
- Clean up kernel-doc comment style usage in the core hibernation
code and remove unuseful comments from it (Sunday Adelodun, Rafael
Wysocki)
- Add support for handling wakeup events and aborting the suspend
process while it is syncing file systems (Samuel Wu, Rafael Wysocki)
- Add WQ_UNBOUND to pm_wq workqueue (Marco Crivellari)
- Add runtime PM wrapper macros for ACQUIRE()/ACQUIRE_ERR() and use
them in the PCI core and the ACPI TAD driver (Rafael Wysocki)
- Improve runtime PM in the ACPI TAD driver (Rafael Wysocki)
- Update pm_runtime_allow/forbid() documentation (Rafael Wysocki)
- Fix typos in runtime.c comments (Malaya Kumar Rout)
- Move governor.h from devfreq under include/linux/ and rename to
devfreq-governor.h to allow devfreq governor definitions in out
of drivers/devfreq/ (Dmitry Baryshkov)
- Use min() to improve readability in tegra30-devfreq.c (Thorsten
Blum)
- Fix potential use-after-free issue of OPP handling in
hisi_uncore_freq.c (Pengjie Zhang)
- Fix typo in DFSO_DOWNDIFFERENTIAL macro name in
governor_simpleondemand.c in devfreq (Riwen Lu)
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Merge tag 'pm-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"There are quite a few interesting things here, including new hardware
support, new features, some bug fixes and documentation updates. In
addition, there are a usual bunch of minor fixes and cleanups all
over.
In the new hardware support category, there are intel_pstate and
intel_rapl driver updates to support new processors, Panther Lake,
Wildcat Lake, Noval Lake, and Diamond Rapids in the OOB mode, OPP and
bandwidth allocation support in the tegra186 cpufreq driver, and
JH7110S SOC support in dt-platdev cpufreq.
The new features are the PM QoS CPU latency limit for suspend-to-idle,
the netlink support for the energy model management, support for
terminating system suspend via a wakeup event during the sync of file
systems, configurable number of hibernation compression threads, the
runtime PM auto-cleanup macros, and the "poweroff" PM event that is
expected to be used during system shutdown.
Bugs are mostly fixed in cpuidle governors, but there are also fixes
elsewhere, like in the amd-pstate cpufreq driver.
Documentation updates include, but are not limited to, a new doc on
debugging shutdown hangs, cross-referencing fixes and cleanups in the
intel_pstate documentation, and updates of comments in the core
hibernation code.
Specifics:
- Introduce and document a QoS limit on CPU exit latency during
wakeup from suspend-to-idle (Ulf Hansson)
- Add support for building libcpupower statically (Zuo An)
- Add support for sending netlink notifications to user space on
energy model updates (Changwoo Mini, Peng Fan)
- Minor improvements to the Rust OPP interface (Tamir Duberstein)
- Fixes to scope-based pointers in the OPP library (Viresh Kumar)
- Use residency threshold in polling state override decisions in the
menu cpuidle governor (Aboorva Devarajan)
- Add sanity check for exit latency and target residency in the
cpufreq core (Rafael Wysocki)
- Use this_cpu_ptr() where possible in the teo governor (Christian
Loehle)
- Rework the handling of tick wakeups in the teo cpuidle governor to
increase the likelihood of stopping the scheduler tick in the cases
when tick wakeups can be counted as non-timer ones (Rafael Wysocki)
- Fix a reverse condition in the teo cpuidle governor and drop a
misguided target residency check from it (Rafael Wysocki)
- Clean up multiple minor defects in the teo cpuidle governor (Rafael
Wysocki)
- Update header inclusion to make it follow the Include What You Use
principle (Andy Shevchenko)
- Enable MSR-based RAPL PMU support in the intel_rapl power capping
driver and arrange for using it on the Panther Lake and Wildcat
Lake processors (Kuppuswamy Sathyanarayanan)
- Add support for Nova Lake and Wildcat Lake processors to the
intel_rapl power capping driver (Kaushlendra Kumar, Srinivas
Pandruvada)
- Add OPP and bandwidth support for Tegra186 (Aaron Kling)
- Optimizations for parameter array handling in the amd-pstate
cpufreq driver (Mario Limonciello)
- Fix for mode changes with offline CPUs in the amd-pstate cpufreq
driver (Gautham Shenoy)
- Preserve freq_table_sorted across suspend/hibernate in the cpufreq
core (Zihuan Zhang)
- Adjust energy model rules for Intel hybrid platforms in the
intel_pstate cpufreq driver and improve printing of debug messages
in it (Rafael Wysocki)
- Replace deprecated strcpy() in cpufreq_unregister_governor()
(Thorsten Blum)
- Fix duplicate hyperlink target errors in the intel_pstate cpufreq
driver documentation and use :ref: directive for internal linking
in it (Swaraj Gaikwad, Bagas Sanjaya)
- Add Diamond Rapids OOB mode support to the intel_pstate cpufreq
driver (Kuppuswamy Sathyanarayanan)
- Use mutex guard for driver locking in the intel_pstate driver and
eliminate some code duplication from it (Rafael Wysocki)
- Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra
Kumar)
- Minor improvements to various cpufreq drivers (Christian Marangi,
Hal Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu)
- Replace snprintf() with scnprintf() in show_trace_dev_match()
(Kaushlendra Kumar)
- Fix memory allocation error handling in pm_vt_switch_required()
(Malaya Kumar Rout)
- Introduce CALL_PM_OP() macro and use it to simplify code in generic
PM operations (Kaushlendra Kumar)
- Add module param to backtrace all CPUs in the device power
management watchdog (Sergey Senozhatsky)
- Rework message printing in swsusp_save() (Rafael Wysocki)
- Make it possible to change the number of hibernation compression
threads (Xueqin Luo)
- Clarify that only cgroup1 freezer uses PM freezer (Tejun Heo)
- Add document on debugging shutdown hangs to PM documentation and
correct a mistaken configuration option in it (Mario Limonciello)
- Shut down wakeup source timer before removing the wakeup source
from the list (Kaushlendra Kumar, Rafael Wysocki)
- Introduce new PMSG_POWEROFF event for system shutdown handling with
the help of PM device callbacks (Mario Limonciello)
- Make pm_test delay interruptible by wakeup events (Riwen Lu)
- Clean up kernel-doc comment style usage in the core hibernation
code and remove unuseful comments from it (Sunday Adelodun, Rafael
Wysocki)
- Add support for handling wakeup events and aborting the suspend
process while it is syncing file systems (Samuel Wu, Rafael
Wysocki)
- Add WQ_UNBOUND to pm_wq workqueue (Marco Crivellari)
- Add runtime PM wrapper macros for ACQUIRE()/ACQUIRE_ERR() and use
them in the PCI core and the ACPI TAD driver (Rafael Wysocki)
- Improve runtime PM in the ACPI TAD driver (Rafael Wysocki)
- Update pm_runtime_allow/forbid() documentation (Rafael Wysocki)
- Fix typos in runtime.c comments (Malaya Kumar Rout)
- Move governor.h from devfreq under include/linux/ and rename to
devfreq-governor.h to allow devfreq governor definitions in out of
drivers/devfreq/ (Dmitry Baryshkov)
- Use min() to improve readability in tegra30-devfreq.c (Thorsten
Blum)
- Fix potential use-after-free issue of OPP handling in
hisi_uncore_freq.c (Pengjie Zhang)
- Fix typo in DFSO_DOWNDIFFERENTIAL macro name in
governor_simpleondemand.c in devfreq (Riwen Lu)"
* tag 'pm-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (96 commits)
PM / devfreq: Fix typo in DFSO_DOWNDIFFERENTIAL macro name
cpuidle: Warn instead of bailing out if target residency check fails
cpuidle: Update header inclusion
Documentation: power/cpuidle: Document the CPU system wakeup latency QoS
cpuidle: Respect the CPU system wakeup QoS limit for cpuidle
sched: idle: Respect the CPU system wakeup QoS limit for s2idle
pmdomain: Respect the CPU system wakeup QoS limit for cpuidle
pmdomain: Respect the CPU system wakeup QoS limit for s2idle
PM: QoS: Introduce a CPU system wakeup QoS limit
cpuidle: governors: teo: Add missing space to the description
PM: hibernate: Extra cleanup of comments in swap handling code
PM / devfreq: tegra30: use min to simplify actmon_cpu_to_emc_rate
PM / devfreq: hisi: Fix potential UAF in OPP handling
PM / devfreq: Move governor.h to a public header location
powercap: intel_rapl: Enable MSR-based RAPL PMU support
powercap: intel_rapl: Prepare read_raw() interface for atomic-context callers
cpufreq: qcom-nvmem: fix compilation warning for qcom_cpufreq_ipq806x_match_list
PM: sleep: Call pm_sleep_fs_sync() instead of ksys_sync_helper()
PM: sleep: Add support for wakeup during filesystem sync
cpufreq: ACPI: Replace udelay() with usleep_range()
...
The driver previously skipped handling ClearFeature(ENDPOINT_HALT)
when the endpoint was already not halted. This prevented the
controller from resetting the data sequence number and reinitializing
the endpoint state.
According to USB 3.2 specification Rev. 1.1, section 9.4.5,
ClearFeature(ENDPOINT_HALT) must always reset the data sequence and
set the stream state machine to Disabled, regardless of whether the
endpoint was halted.
Remove the early return so that ClearFeature(ENDPOINT_HALT) always
resets the endpoint sequence state as required by the specification.
Fixes: 49db427232 ("usb: gadget: Add UDC driver for tegra XUSB device mode controller")
Cc: stable <stable@kernel.org>
Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
Signed-off-by: Wayne Chang <waynec@nvidia.com>
Link: https://patch.msgid.link/20251127033540.2287517-1-waynec@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are the USB serial updates for 6.19-rc1:
- fix belkin_sa and kobil_sct TIOCMBIS and TIOCMBIC ioctls
- match on interface number for dual-port ftdi devices with reserved
jtag port
- do not log reserved ftdi jtag ports on probe
- apply ftdi_sio NDI quirk remapping 19200 bps consistently
- drop ftdi_sio NDI quirk module parameter
- clean up ftdi_sio quirk implementations
- add more modem device ids
Included are also various clean ups.
All have been in linux-next with no reported issues.
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Merge tag 'usb-serial-6.19-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
USB serial updates for 6.19-rc1
Here are the USB serial updates for 6.19-rc1:
- fix belkin_sa and kobil_sct TIOCMBIS and TIOCMBIC ioctls
- match on interface number for dual-port ftdi devices with reserved
jtag port
- do not log reserved ftdi jtag ports on probe
- apply ftdi_sio NDI quirk remapping 19200 bps consistently
- drop ftdi_sio NDI quirk module parameter
- clean up ftdi_sio quirk implementations
- add more modem device ids
Included are also various clean ups.
All have been in linux-next with no reported issues.
* tag 'usb-serial-6.19-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: option: move Telit 0x10c7 composition in the right place
USB: serial: option: add Telit Cinterion FE910C04 new compositions
USB: serial: option: add Foxconn T99W760
USB: serial: ftdi_sio: drop NDI quirk module parameter
USB: serial: ftdi_sio: clean up NDI speed hack
USB: serial: ftdi_sio: enable NDI speed hack consistently
USB: serial: ftdi_sio: rename quirk symbols
USB: serial: ftdi_sio: clean up quirk comments
USB: serial: ftdi_sio: rewrite 8u2232c quirk
USB: serial: ftdi_sio: silence jtag probe
USB: serial: ftdi_sio: match on interface number for jtag
USB: serial: kobil_sct: drop unnecessary initialisations
USB: serial: kobil_sct: clean up set_termios()
USB: serial: kobil_sct: add control request helpers
USB: serial: kobil_sct: clean up device type checks
USB: serial: kobil_sct: clean up tiocmset()
USB: serial: belkin_sa: clean up tiocmset()
USB: serial: kobil_sct: fix TIOCMBIS and TIOCMBIC
USB: serial: belkin_sa: fix TIOCMBIS and TIOCMBIC
Move Telit 0x10c7 composition right after 0x10c6 composition and
before 0x10c8 composition.
Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
The delayed work uec->work is scheduled in gaokun_ucsi_probe()
but never properly canceled in gaokun_ucsi_remove(). This creates
use-after-free scenarios where the ucsi and gaokun_ucsi structure
are freed after ucsi_destroy() completes execution, while the
gaokun_ucsi_register_worker() might be either currently executing
or still pending in the work queue. The already-freed gaokun_ucsi
or ucsi structure may then be accessed.
Furthermore, the race window is 3 seconds, which is sufficiently
long to make this bug easily reproducible. The following is the
trace captured by KASAN:
==================================================================
BUG: KASAN: slab-use-after-free in __run_timers+0x5ec/0x630
Write of size 8 at addr ffff00000ec28cc8 by task swapper/0/0
...
Call trace:
show_stack+0x18/0x24 (C)
dump_stack_lvl+0x78/0x90
print_report+0x114/0x580
kasan_report+0xa4/0xf0
__asan_report_store8_noabort+0x20/0x2c
__run_timers+0x5ec/0x630
run_timer_softirq+0xe8/0x1cc
handle_softirqs+0x294/0x720
__do_softirq+0x14/0x20
____do_softirq+0x10/0x1c
call_on_irq_stack+0x30/0x48
do_softirq_own_stack+0x1c/0x28
__irq_exit_rcu+0x27c/0x364
irq_exit_rcu+0x10/0x1c
el1_interrupt+0x40/0x60
el1h_64_irq_handler+0x18/0x24
el1h_64_irq+0x6c/0x70
arch_local_irq_enable+0x4/0x8 (P)
do_idle+0x334/0x458
cpu_startup_entry+0x60/0x70
rest_init+0x158/0x174
start_kernel+0x2f8/0x394
__primary_switched+0x8c/0x94
Allocated by task 72 on cpu 0 at 27.510341s:
kasan_save_stack+0x2c/0x54
kasan_save_track+0x24/0x5c
kasan_save_alloc_info+0x40/0x54
__kasan_kmalloc+0xa0/0xb8
__kmalloc_node_track_caller_noprof+0x1c0/0x588
devm_kmalloc+0x7c/0x1c8
gaokun_ucsi_probe+0xa0/0x840 auxiliary_bus_probe+0x94/0xf8
really_probe+0x17c/0x5b8
__driver_probe_device+0x158/0x2c4
driver_probe_device+0x10c/0x264
__device_attach_driver+0x168/0x2d0
bus_for_each_drv+0x100/0x188
__device_attach+0x174/0x368
device_initial_probe+0x14/0x20
bus_probe_device+0x120/0x150
device_add+0xb3c/0x10fc
__auxiliary_device_add+0x88/0x130
...
Freed by task 73 on cpu 1 at 28.910627s:
kasan_save_stack+0x2c/0x54
kasan_save_track+0x24/0x5c
__kasan_save_free_info+0x4c/0x74
__kasan_slab_free+0x60/0x8c
kfree+0xd4/0x410
devres_release_all+0x140/0x1f0
device_unbind_cleanup+0x20/0x190
device_release_driver_internal+0x344/0x460
device_release_driver+0x18/0x24
bus_remove_device+0x198/0x274
device_del+0x310/0xa84
...
The buggy address belongs to the object at ffff00000ec28c00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 200 bytes inside of
freed 512-byte region
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4ec28
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x3fffe0000000040(head|node=0|zone=0|lastcpupid=0x1ffff)
page_type: f5(slab)
raw: 03fffe0000000040 ffff000008801c80 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
head: 03fffe0000000040 ffff000008801c80 dead000000000122 0000000000000000
head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
head: 03fffe0000000002 fffffdffc03b0a01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff00000ec28b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff00000ec28c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff00000ec28c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff00000ec28d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff00000ec28d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Add disable_delayed_work_sync() in gaokun_ucsi_remove() to ensure
that uec->work is properly canceled and prevented from executing
after the ucsi and gaokun_ucsi structure have been deallocated.
Fixes: 00327d7f2c ("usb: typec: ucsi: add Huawei Matebook E Go ucsi driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/cc31e12ef9ffbf86676585b02233165fd33f0d8e.1764065838.git.duoming@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The gaokun_ucsi_probe() uses ucsi_create() to allocate a UCSI instance.
The ucsi_create() validates whether ops->poll_cci is defined, and if not,
it directly returns -EINVAL. However, the gaokun_ucsi_ops structure does
not define the poll_cci, causing ucsi_create() always fail with -EINVAL.
This issue can be observed in the kernel log with the following error:
ucsi_huawei_gaokun.ucsi huawei_gaokun_ec.ucsi.0: probe with driver
ucsi_huawei_gaokun.ucsi failed with error -22
Fix the issue by adding the missing poll_cci callback to gaokun_ucsi_ops.
Fixes: 00327d7f2c ("usb: typec: ucsi: add Huawei Matebook E Go ucsi driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Pengyu Luo <mitltlatltl@gmail.com>
Link: https://patch.msgid.link/4d077d6439d728be68646bb8c8678436a3a0885e.1764065838.git.duoming@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove redundant comment which was put in to address LLUCTL register
modifications for all applicable ports of multiport controller. Although
the support was added, the todo comment wasn't removed then.
Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20251116123033.131004-1-krishna.kurapati@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As part of the registration of a new 'struct usb_phy' with the USB PHY core
via either usb_add_phy(struct usb_phy *x, ...) or usb_add_phy_dev(struct
usb_phy *x) these functions call list_add_tail(&x->head, phy_list) in
order for the new instance x to be stored in phy_list, a static list
kept internally by the core.
After 7d21114dc6 ("usb: phy: Introduce one extcon device into usb phy")
when executing either of the registration functions above it is possible
that usb_add_extcon() fails, leading to either function returning before
the call to list_add_tail(), leaving x->head uninitialized.
Then, when a driver tries to undo the failed registration by calling
usb_remove_phy(struct usb_phy *x) there will be an unconditional call to
list_del(&x->head) acting on an uninitialized variable, and thus a
possible NULL pointer dereference.
Fix this by initializing x->head before usb_add_extcon() has a
chance to fail. Note that this was not needed before 7d21114dc6 since
list_add_phy() was executed unconditionally and it guaranteed that x->head
was initialized.
Fixes: 7d21114dc6 ("usb: phy: Introduce one extcon device into usb phy")
Cc: stable <stable@kernel.org>
Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Link: https://patch.msgid.link/20251121-diogo-smaug_typec-v2-1-5c37c1169d57@tecnico.ulisboa.pt
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
devm_pm_runtime_enable() can fail due to memory allocation.
The current code ignores its return value, potentially causing
pm_runtime_resume_and_get() to operate on uninitialized runtime
PM state.
Check the return value of devm_pm_runtime_enable() and return on failure.
Fixes: 3e6e14ffde ("usb: gadget: udc: add Renesas RZ/N1 USBF controller support")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Acked-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251124022215.1619-1-vulab@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A report from Oleg Smirnov indicates that the unusual_devs quirks
entry for the Novatek camera does not need to override the subclass
and protocol parameters:
[3266355.209532] usb 1-3: new high-speed USB device number 10 using xhci_hcd
[3266355.333031] usb 1-3: New USB device found, idVendor=0603, idProduct=8611, bcdDevice= 1.00
[3266355.333040] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[3266355.333043] usb 1-3: Product: YICARCAM
[3266355.333045] usb 1-3: Manufacturer: XIAO-YI
[3266355.333047] usb 1-3: SerialNumber: 966110000000100
[3266355.338621] usb-storage 1-3:1.0: USB Mass Storage device detected
[3266355.338817] usb-storage 1-3:1.0: Quirks match for vid 0603 pid 8611: 4000
[3266355.338821] usb-storage 1-3:1.0: This device (0603,8611,0100 S 06 P 50) has unneeded SubClass and Protocol entries in unusual_devs.h (kernel 6.16.10-arch1-1)
Please send a copy of this message to
<linux-usb@vger.kernel.org> and <usb-storage@lists.one-eyed-alien.net>
The overrides are harmless but they do provoke the driver into logging
this annoying message. Update the entry to remove the unneeded entries.
Reported-by: stealth <oleg.smirnov.1988@gmail.com>
Closes: https://lore.kernel.org/CAKxjRRxhC0s19iEWoN=pEMqXJ_z8w_moC0GCXSqSKCcOddnWjQ@mail.gmail.com/
Fixes: 6ca8af3c8f ("USB: storage: Add unusual-devs entry for Novatek NTK96550-based camera")
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/b440f177-f0b8-4d5a-8f7b-10855d4424ee@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The optical drive of EL-R12 has the same vid and pid as INIC-3069,
as follows:
T: Bus=02 Lev=02 Prnt=02 Port=01 Cnt=01 Dev#= 3 Spd=5000 MxCh= 0
D: Ver= 3.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 9 #Cfgs= 1
P: Vendor=13fd ProdID=3940 Rev= 3.10
S: Manufacturer=HL-DT-ST
S: Product= DVD+-RW GT80N
S: SerialNumber=423349524E4E38303338323439202020
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=144mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=02 Prot=50 Driver=usb-storage
E: Ad=83(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=0a(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
This will result in the optical drive device also adding
the quirks of US_FL_NO_ATA_1X. When performing an erase operation,
it will fail, and the reason for the failure is as follows:
[ 388.967742] sr 5:0:0:0: [sr0] tag#0 Send: scmd 0x00000000d20c33a7
[ 388.967742] sr 5:0:0:0: [sr0] tag#0 CDB: ATA command pass through(12)/Blank a1 11 00 00 00 00 00 00 00 00 00 00
[ 388.967773] sr 5:0:0:0: [sr0] tag#0 Done: SUCCESS Result: hostbyte=DID_TARGET_FAILURE driverbyte=DRIVER_OK cmd_age=0s
[ 388.967773] sr 5:0:0:0: [sr0] tag#0 CDB: ATA command pass through(12)/Blank a1 11 00 00 00 00 00 00 00 00 00 00
[ 388.967803] sr 5:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current]
[ 388.967803] sr 5:0:0:0: [sr0] tag#0 Add. Sense: Invalid field in cdb
[ 388.967803] sr 5:0:0:0: [sr0] tag#0 scsi host busy 1 failed 0
[ 388.967803] sr 5:0:0:0: Notifying upper driver of completion (result 8100002)
[ 388.967834] sr 5:0:0:0: [sr0] tag#0 0 sectors total, 0 bytes done.
For the EL-R12 standard optical drive, all operational commands
and usage scenarios were tested without adding the IGNORE_RESIDUE quirks,
and no issues were encountered. It can be reasonably concluded
that removing the IGNORE_RESIDUE quirks has no impact.
Signed-off-by: Chen Changcheng <chenchangcheng@kylinos.cn>
Link: https://patch.msgid.link/20251121064020.29332-1-chenchangcheng@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is a ID pin present on HD3SS3220 controller that can be routed
to SoC. As per the datasheet:
"Upon detecting a UFP device, HD3SS3220 will keep ID pin high if VBUS is
not at VSafe0V. Once VBUS is at VSafe0V, the HD3SS3220 will assert ID pin
low. This is done to enforce Type-C requirement that VBUS must be at
VSafe0V before re-enabling VBUS"
Add support to read the ID pin state and enable VBUS accordingly.
Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251111072025.2199142-3-krishna.kurapati@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.
This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.
This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:
commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")
This change adds a new WQ_PERCPU flag to explicitly request
alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified.
With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.
Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251107153737.301413-3-marco.crivellari@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.
This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.
This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:
commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")
This change adds a new WQ_PERCPU flag to explicitly request
alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified.
With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.
Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Link: https://patch.msgid.link/20251107153737.301413-2-marco.crivellari@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
min_t(unsigned int, a, b) casts an 'unsigned long' to 'unsigned int'.
Use min(a, b) instead as it promotes any 'unsigned int' to 'unsigned long'
and so cannot discard significant bits.
In this case the 'unsigned long' value is small enough that the result
is ok.
Detected by an extra check added to min_t().
Signed-off-by: David Laight <david.laight.linux@gmail.com>
Link: https://patch.msgid.link/20251119224140.8616-29-david.laight.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The previous commit removed the PAGE_SIZE limit on transfer length of
raw_io buffer in order to avoid any problems with emulating USB devices
whose full configuration descriptor exceeds PAGE_SIZE in length. However
this also removes the upperbound on user supplied length, allowing very
large values to be passed to the allocator.
syzbot on fuzzing the transfer length with very large value (1.81GB)
results in kmalloc() to fall back to the page allocator, which triggers
a kernel warning as the page allocator cannot handle allocations more
than MAX_PAGE_ORDER/KMALLOC_MAX_SIZE.
Since there is no limit imposed on the size of buffer for both control
and non control transfers, cap the raw_io transfer length to
KMALLOC_MAX_SIZE and return -EINVAL for larger transfer length to
prevent any warnings from the page allocator.
Fixes: 37b9dd0d11 ("usb: raw-gadget: do not limit transfer length")
Tested-by: syzbot+d8fd35fa6177afa8c92b@syzkaller.appspotmail.com
Reported-by: syzbot+d8fd35fa6177afa8c92b@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/68fc07a0.a70a0220.3bf6c6.01ab.GAE@google.com/
Signed-off-by: Gopi Krishna Menon <krishnagopi487@gmail.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Link: https://patch.msgid.link/20251028165659.50962-1-krishnagopi487@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a UAS device is unplugged during data transfer, there is
a probability of a system panic occurring. The root cause is
an access to an invalid memory address during URB callback handling.
Specifically, this happens when the dma_direct_unmap_sg() function
is called within the usb_hcd_unmap_urb_for_dma() interface, but the
sg->dma_address field is 0 and the sg data structure has already been
freed.
The SCSI driver sends transfer commands by invoking uas_queuecommand_lck()
in uas.c, using the uas_submit_urbs() function to submit requests to USB.
Within the uas_submit_urbs() implementation, three URBs (sense_urb,
data_urb, and cmd_urb) are sequentially submitted. Device removal may
occur at any point during uas_submit_urbs execution, which may result
in URB submission failure. However, some URBs might have been successfully
submitted before the failure, and uas_submit_urbs will return the -ENODEV
error code in this case. The current error handling directly calls
scsi_done(). In the SCSI driver, this eventually triggers scsi_complete()
to invoke scsi_end_request() for releasing the sgtable. The successfully
submitted URBs, when being unlinked to giveback, call
usb_hcd_unmap_urb_for_dma() in hcd.c, leading to exceptions during sg
unmapping operations since the sg data structure has already been freed.
This patch modifies the error condition check in the uas_submit_urbs()
function. When a UAS device is removed but one or more URBs have already
been successfully submitted to USB, it avoids immediately invoking
scsi_done() and save the cmnd to devinfo->cmnd array. If the successfully
submitted URBs is completed before devinfo->resetting being set, then
the scsi_done() function will be called within uas_try_complete() after
all pending URB operations are finalized. Otherwise, the scsi_done()
function will be called within uas_zap_pending(), which is executed after
usb_kill_anchored_urbs().
The error handling only takes effect when uas_queuecommand_lck() calls
uas_submit_urbs() and returns the error value -ENODEV . In this case,
the device is disconnected, and the flow proceeds to uas_disconnect(),
where uas_zap_pending() is invoked to call uas_try_complete().
Fixes: eb2a86ae8c ("USB: UAS: fix disconnect by unplugging a hub")
Cc: stable <stable@kernel.org>
Signed-off-by: Yu Chen <chenyu45@xiaomi.com>
Signed-off-by: Owen Gu <guhuinan@xiaomi.com>
Acked-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20251120123336.3328-1-guhuinan@xiaomi.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch addresses a race condition caused by unsynchronized
execution of multiple call paths invoking `dwc3_remove_requests()`,
leading to premature freeing of USB requests and subsequent crashes.
Three distinct execution paths interact with `dwc3_remove_requests()`:
Path 1:
Triggered via `dwc3_gadget_reset_interrupt()` during USB reset
handling. The call stack includes:
- `dwc3_ep0_reset_state()`
- `dwc3_ep0_stall_and_restart()`
- `dwc3_ep0_out_start()`
- `dwc3_remove_requests()`
- `dwc3_gadget_del_and_unmap_request()`
Path 2:
Also initiated from `dwc3_gadget_reset_interrupt()`, but through
`dwc3_stop_active_transfers()`. The call stack includes:
- `dwc3_stop_active_transfers()`
- `dwc3_remove_requests()`
- `dwc3_gadget_del_and_unmap_request()`
Path 3:
Occurs independently during `adb root` execution, which triggers
USB function unbind and bind operations. The sequence includes:
- `gserial_disconnect()`
- `usb_ep_disable()`
- `dwc3_gadget_ep_disable()`
- `dwc3_remove_requests()` with `-ESHUTDOWN` status
Path 3 operates asynchronously and lacks synchronization with Paths
1 and 2. When Path 3 completes, it disables endpoints and frees 'out'
requests. If Paths 1 or 2 are still processing these requests,
accessing freed memory leads to a crash due to use-after-free conditions.
To fix this added check for request completion and skip processing
if already completed and added the request status for ep0 while queue.
Fixes: 72246da40f ("usb: Introduce DesignWare USB3 DRD Driver")
Cc: stable <stable@kernel.org>
Suggested-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Manish Nagar <manish.nagar@oss.qualcomm.com>
Link: https://patch.msgid.link/20251120074435.1983091-1-manish.nagar@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When DbC is disconnected then xhci_dbc_tty_unregister_device()
is called. However if there is any user space process blocked
on write to DbC terminal device then it will never be signalled
and thus stay blocked indifinitely.
This fix adds a tty_vhangup() call in xhci_dbc_tty_unregister_device().
The tty_vhangup() wakes up any blocked writers and causes subsequent
write attempts to DbC terminal device to fail.
Cc: stable <stable@kernel.org>
Fixes: dfba2174dc ("usb: xhci: Add DbC support in xHCI driver")
Signed-off-by: Łukasz Bartosik <ukaszb@chromium.org>
Link: https://patch.msgid.link/20251119212910.1245694-1-ukaszb@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Discovered by Atuin - Automated Vulnerability Discovery Engine.
new_pba comes from the status packet returned after each write.
A bogus device could report values beyond the block count derived
from info->capacity, letting the driver walk off the end of
pba_to_lba[] and corrupt heap memory.
Reject PBAs that exceed the computed block count and fail the
transfer so we avoid touching out-of-range mapping entries.
Signed-off-by: Tianchu Chen <flynnnchen@tencent.com>
Cc: stable <stable@kernel.org>
Link: https://patch.msgid.link/B2DC73A3EE1E3A1D+202511161322001664687@tencent.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We no longer support any board files for DaVinci in mainline and so
struct da8xx_ohci_root_hub is no longer used. Remove it together with
all the code it's used for.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20251114-davinci-usb-v1-1-737380353a74@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace the open-coded dma_resv_lock()/dma_resv_unlock() around
dma_buf_unmap_attachment() in ffs_dmabuf_release() with the
dma_buf_unmap_attachment_unlocked() helper.
This aligns FunctionFS DMABUF unmap handling with the standard
DMA-BUF API, avoids duplicating locking logic and eases future
maintenance. No functional change.
Reviewed-by: fanggeng <fanggeng@lixiang.com>
Signed-off-by: Liang Jie <liangjie@lixiang.com>
Link: https://patch.msgid.link/20251114084246.2064845-1-buaajxlj@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The EIC7700 instantiates two USB 3.0 DWC3 IPs, each of which is backward
compatible with USB interfaces. It supports Super-speed (5Gb/s), DRD mode,
and compatible with xHCI 1.1, etc. Each of instances supports 16 endpoints
in device's mode and max 64 devices in host's mode.
This module needs to interact with the NOC via the AXI master bus, thus
requiring some HSP configuration operations to achieve this. Ops include
bus filter, pm signal or status to usb bus and so on.
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Senchuan Zhang <zhangsenchuan@eswincomputing.com>
Signed-off-by: Hang Cao <caohang@eswincomputing.com>
Link: https://patch.msgid.link/20251112055346.1655-1-caohang@eswincomputing.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add debugfs entry for writing message_out data structure to handle
UCSI 2.1 and 3.0 commands through debugfs interface.
Users writing to the message_out debugfs file should ensure the input
data adheres to the following format:
1. Input must be a non-empty valid hexadecimal string.
2. Input length of hexadecimal string must not exceed 256 bytes of
length to be in alignment with the message out data structure size
as per the UCSI specification v2.1.
3. If the input string length is odd, then user needs to prepend a
'0' to the first character for proper hex conversion.
Below are examples of valid hex strings. Note that these values are
just examples. The exact values depend on specific command use case.
#echo 1A2B3C4D > message_out
#echo 01234567 > message_out
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Pooja Katiyar <pooja.katiyar@intel.com>
Link: https://patch.msgid.link/0a81c2209eb299c1af191cd7ce758a92d5adf81b.1761773881.git.pooja.katiyar@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add support for updating message out data structure for UCSI
ACPI interface for UCSI 2.1 and UCSI 3.0 commands such as
Set PDOs and LPM Firmware Update.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Pooja Katiyar <pooja.katiyar@intel.com>
Link: https://patch.msgid.link/5bb1f367e44c9fc5244c3e10e513f02d62fe8166.1761773881.git.pooja.katiyar@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update UCSI structure by adding fields for incoming and outgoing
messages. Update .sync_control function and other related functions
to use these new fields within the UCSI structure, instead of handling
them as separate parameters.
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Pooja Katiyar <pooja.katiyar@intel.com>
Link: https://patch.msgid.link/214b0a90c3220db33084ab714f4f33a004f70a41.1761773881.git.pooja.katiyar@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The spec requires at least one interface respectively country.
It allows multiple ones. This needs to be clearly said in the UAPI.
This is subject to sanity checking in cdc_parse_cdc_header(), thus
we can trust the length.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20251111134641.4118827-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(),
pm_runtime_autosuspend() and pm_request_autosuspend() now include a call
to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to
pm_runtime_mark_last_busy().
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://patch.msgid.link/20251111095117.95023-1-sakari.ailus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Renesas RZ/G3S SoC supports a power-saving mode in which power to most
SoC components is turned off, including the USB subsystem.
To properly restore from such a state, the reset signal needs to be
asserted/de-asserted during suspend/resume. Add reset assert/de-assert on
suspend/resume.
The resume code has been moved into a separate function to allow reusing
it in case reset_control_assert() from suspend fails.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20251106143625.3050119-5-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Renesas RZ/G3S SoC supports a power-saving mode in which power to most
of the SoC components is turned off, including the USB blocks. On the
resume path, the reset signal must be de-asserted before applying any
settings to the USB registers. To handle this properly, call
reset_control_assert() and reset_control_deassert() during suspend and
resume, respectively.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20251106143625.3050119-4-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Renesas RZ/G3S SoC supports a power-saving mode in which power to most
of the SoC components is turned off, including the USB blocks. On the
resume path, the reset signal must be de-asserted before applying any
settings to the USB registers. To handle this properly, call
reset_control_assert() and reset_control_deassert() during suspend and
resume, respectively.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://patch.msgid.link/20251106143625.3050119-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There is no need to check the entries in priv->clks[] array before passing
it to clk_disable_unprepare() as the clk_disable_unprepare() already
check if it receives a NULL or error pointer as argument. Remove this
check. This makes the code simpler.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251106143625.3050119-2-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The driver contains orientation detection logic and correctly calls
typec_set_orientation(), but forgets to set the orientation_aware
capability, so the orientation value is not visible in sysfs - Fix that.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251107151311.2089806-1-peter@korsgaard.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.
This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.
This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:
commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")
This change adds a new WQ_PERCPU flag to explicitly request
alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified.
With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.
Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Link: https://patch.msgid.link/20251107154236.306620-1-marco.crivellari@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently if a user enqueues a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistency cannot be addressed without refactoring the API.
This continues the effort to refactor workqueue APIs, which began with
the introduction of new workqueues and a new alloc_workqueue flag in:
commit 128ea9f6cc ("workqueue: Add system_percpu_wq and system_dfl_wq")
commit 930c2ea566 ("workqueue: Add new WQ_PERCPU flag")
Switch to using system_percpu_wq because system_wq is going away as part of
a workqueue restructuring.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://patch.msgid.link/20251106152712.279042-1-marco.crivellari@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dwc2 on most platforms needs phy controller, clock and power supply.
All of them must be enabled/activated to properly operate. If dwc2
is configured as peripheral mode, then all the above three hardware
resources are disabled at the end of the probe:
/* Gadget code manages lowlevel hw on its own */
if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
dwc2_lowlevel_hw_disable(hsotg);
But the dwc2_suspend() tries to read the dwc2's reg to check whether
is_device_mode or not, this would result in hang during suspend if dwc2
is configured as peripheral mode.
Fix this hang by bypassing suspend/resume if lowlevel hw isn't
enabled.
Fixes: 09a75e8577 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://patch.msgid.link/20251104002503.17158-3-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dwc2 on most platforms needs phy controller, clock and power supply.
All of them must be enabled/activated to properly operate. If dwc2
is configured as peripheral mode, then all the above three hardware
resources are disabled at the end of the probe:
/* Gadget code manages lowlevel hw on its own */
if (hsotg->dr_mode == USB_DR_MODE_PERIPHERAL)
dwc2_lowlevel_hw_disable(hsotg);
But dwc2_driver_shutdown() tries to disable the interrupts on HW IP
level. This would result in hang during shutdown if dwc2 is configured
as peripheral mode.
Fix this hang by only disable and sync irq when lowlevel hw is enabled.
Fixes: 4fdf228cdf ("usb: dwc2: Fix shutdown callback in platform")
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://patch.msgid.link/20251104002503.17158-2-jszhang@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For UCSI 2.0 and above, since the orientation is part of the paylad,
set the orientation_aware by default and let the implementation specific
update_connector op override if necessary.
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20251028-b4-ucsi-set-orientation-aware-on-version-2-and-above-v1-1-d3425f5679af@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A failure to take a lock with O_NONBLOCK needs to result
in -EAGAIN. Change it.
Fixes: 66e3e59189 ("usb: Add driver for Altus Metrum ChaosKey device (v2)")
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20251030093918.2248104-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Each xHCI roothub port has a Port Link Info (PORTLI) register that is
used by USB3 and eUSB2V2 ports.
USB3 ports show link error count, rx lane count, and tx lane count.
eUSB2V2 ports show Rx Data Rate (RDR) and Tx Data Rate (TDR).
Rx/Tx Data Rate is a multiple of USB2 2.0 HS 480 Mb/s data rates,
and is only valid if a eUSB2V2 device is connected (CCS=1).
0 = "USB 2.0 HS" normal HS 480 Mb/s, no eUSB2V2 in use
1 = "HS1" Assymetric eUSB2V2 where this direction runs normal 480Mb/s
2 = "HS2" 960Mb/s
...
10 = "HS10" 4.8 Gb/s, max eUSB2V2 rate
PORTLI is Reserved and preserve "RsvdP" for normal USB2 ports
Sample output of USB3 port PORTLI:
cat /sys/kernel/debug/usb/xhci/0000:00:14.0/ports/port14/portli
0x00000000 LEC=0 RLC=0 TLC=0
Signed-off-by: Rai, Amardeep <amardeep.rai@intel.com>
Co-developed-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-24-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert single bit-field macros to simple masks. The change makes the
masks more universal. Multi bit-field macros are changed in the next
commit. After both changes, all masks in xhci-caps.h will follow the
same format. I plan to introduce this change to all xhci macros.
Bit shift operations on a 32-bit signed can be problematic on some
architectures. Instead use BIT() macro, which returns a 64-bit unsigned
value. This ensures that the shift operation is performed on an unsigned
type, which is safer and more portable across different architectures.
Using unsigned integers for bit shifts avoids issues related to sign bits
and ensures consistent behavior.
Switch from 32-bit to 64-bit?
As far as I am aware, this does not cause any issues.
Performing bitwise operations between 32 and 64 bit values, the smaller
operand is promoted to match the size of the larger one, resulting in a
64-bit operation. This promotion extends the 32-bit value to 64 bits,
by zero-padding (for unsigned).
Will the change to 64-bit slow down the xhci driver?
On a 64-bit architecture - No. On a 32-bit architecture, yes? but in my
opinion the performance decrease does not outweigh the readability and
other benefits of using BIT() macro.
Why not use FIELD_GET() and FIELD_PREP()?
While they can be used for single bit macros, I prefer to use simple
bitwise operation directly. Because, it takes less space, is less overhead
and is as clear as if using FIELD_GET() and FIELD_PREP().
Why not use test_bit() macro?
Same reason as with FIELD_GET() and FIELD_PREP().
Suggested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-23-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Drop the dependency of xhci-caps.h on xhci-ext-caps.h by eliminating 2
instances where macros in xhci-caps.h were redefined from xhci-ext-caps.h.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-22-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Max Scratchpad Buffers consist of two bit-fields:
bits 25:21 - Max Scratchpad Buffers High, 5 Most significant bits
bits 27:31 - Max Scratchpad Buffers Low, 5 Least significant bits
Combined they create the Max Scratchpad Buffers value.
Add two new macros, 'HCS_MAX_SP_HI' and 'HCS_MAX_SP_LO', to separately
extract the high and low parts of the Max Scratchpad Buffers. These are
then combined using 'HCS_MAX_SCRATCHPAD' macro. This change simplifies
the code and makes it similar to other split value register macros in the
xhci driver.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-21-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The IST is represented by bits 2:0, with bit 3 indicating the unit of
measurement, Frames or Microframes. Introduce xhci_ist_microframes(),
which returns the IST value in Microframes, simplifying the code and
reducing duplication.
Improve documentation in xhci-caps.h to clarify the IST register specifics,
including the unit conversion details. These change removes the need to
explain it each time the IST values is retrieved.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-20-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
No functional changes.
This patch updates comments in xhci-caps.h for better readability and
consistency. Each Capability Register bit field now includes a brief
description of its name and valid range, following a uniform comment
format across the file.
These updates are based on the xHCI specification, revision 1.2.
Bit field comment format:
/* <bit range> - <Field name>,<noteworthy information if any> */
Why print the bit range?
The bit range aids in identifying missing macros and reserved bit ranges.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-19-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The xHCI driver defines only 128 interrupter register slots, yet allows up
to 2047 interrupters. According to the xHCI specification, the maximum
valid number of interrupters is 1024. These mismatches can lead to
out-of-range accesses and excessive memory use.
The Number of Interrupters (MaxIntrs) field occupies bits 18:8 of the
HCSPARAMS1 register, which can yield a value up to 2047, although the
specification limits it to 1024. Cap the value using the 'MAX_HC_INTRS'
macro.
Set 'xhci->max_intrs' to the minimum of the value reported by the
HCSPARAMS1 register and 'MAX_HC_INTRS'. The interrupter register slot
array is defined for 1024 entries, serving only as a structural template
and not increasing memory usage.
Although the xHCI specification allows up to 1024 interrupters, raising
'MAX_HC_INTRS' above 128 provides no practical benefit. The driver only
uses the primary interrupter (0), and secondary interrupters (1+) are
rarely, if ever, used in practice. No reports exist of usage beyond 128.
Therefore, I have limited it to 128.
Summary:
* Interrupter allocations are now limited to 128 from 2047.
* Interrupter Register template slots are set to 1024 from 128.
* Macro 'MAX_HC_INTRS' can be modified to set the interrupter limit.
==== Detailed interrupter explanation ====
There are two relevant components:
Interrupter array:
This holds the software interrupter structures and is allocated by the
xhci driver. The number of interrupters allocated is determined by the
HCSPARAMS1 register field, which specifies the supported interrupter
count.
Interrupter register slots:
This is a template struct used to access the hardware's runtime
registers. It is not allocated by the driver, the hardware defines and
owns this memory region, and the driver only maps it for MMIO access.
Each entry in the interrupter array points to its corresponding
interrupter register slot in the hardware region once that interrupter
is enabled.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-18-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The xHCI driver allocates various port-related structures based on the
maximum number of ports reported by the controller. The Number of Ports
(MaxPorts) field occupies bits 31:24 of the HCSPARAMS1 register and can
represent values up to 255. However, the 'HCS_MAX_PORTS()' macro currently
reads bits 30:24, effectively limiting the maximum to 127.
Fixing the macro increases the reported port limit to 255, which in turn
increases memory usage regardless of how many ports are actually used.
To maintain compatibility and control memory consumption, set
'xhci->max_ports' to the minimum of the value read from 'HCS_MAX_PORTS()'
and 127 (MAX_HC_PORTS). This preserves the existing limit while making
the restriction explicit and easier to adjust in the future.
Summary:
* Port allocations are now limited to 127.
* HC max ports macro now correctly reads the MaxPorts value.
* Macro 'MAX_HC_PORTS' can be modified to set the port limit.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-17-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 32-bit read-only HCSPARAMS1 register contains the following fields:
Bits 7:0 - Number of Device Slots (MaxSlots)
Bits 18:8 - Number of Interrupters (MaxIntrs)
Bits 23:19 - Reserved
Bits 31:24 - Number of Ports (MaxPorts)
Since the register value is constant for the lifetime of the controller,
it is cached in 'xhci->hcs_params1'. However, platform drivers may
override the number of interrupters through a separate variable,
'xhci->max_interrupters', leaving only the maximum slots and ports values
still derived from the cached register.
To simplify the code and improve readability, replace 'xhci->hcs_params1'
with two dedicated 'u8' fields: 'xhci->max_slots' and 'xhci->max_ports'.
These values are initialized once and used directly instead of calling
'HCS_MAX_SLOTS()' and 'HCS_MAX_PORTS()' macros.
This change reduces code clutter without increasing memory usage.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-16-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Structural Parameters 1 (HCSPARAMS1) register is read and cached in
'xhci->hcs_params1' during host controller initialization. Since this
register is read-only and its value remains constant for the lifetime of
the controller, re-reading it later is unnecessary.
Replace subsequent register reads with the cached 'xhci->hcs_params1'
value to avoid redundant MMIO access.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-15-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove endpoint number 'ep_num' argument and memory operation from
xhci_log_ctx() trace function. These changes were added in commit
1d27fabec0 ("xhci: add xhci_address_ctx trace event") on Aug 14, 2013
and have never been used.
Signed-off-by: Niklas Neronin <niklas.neronin@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://patch.msgid.link/20251119142417.2820519-14-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
