goodix_ts_read_input_report() copies the number of touch points reported
by the device into an on-stack buffer
u8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
which is sized for at most GOODIX_MAX_CONTACTS (10) contacts. The only
runtime check bounds the per-interrupt count against ts->max_touch_num,
but that value is taken verbatim from a 4-bit field of the device
configuration block and is never clamped:
ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f;
The nibble can be 0..15, so a malfunctioning, malicious or counterfeit
controller (or an attacker tampering with the I2C bus) can advertise up
to 15 contacts. goodix_ts_read_input_report() then accepts a touch_num
of up to 15 and the second goodix_i2c_read() writes
ts->contact_size * (touch_num - 1) bytes past the one-contact header into
point_data - up to 30 bytes (45 with the 9-byte report format) beyond the
92-byte buffer: a stack out-of-bounds write.
Clamp max_touch_num to GOODIX_MAX_CONTACTS, the number of contacts
point_data[] is sized for, when reading it from the configuration.
Fixes: a7ac7c95d4 ("Input: goodix - use max touch number from device config")
Cc: stable@vger.kernel.org
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Link: https://patch.msgid.link/20260612-b4-disp-6844625d-v1-1-df0aed080c9d@proton.me
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
mms114_interrupt() reads a packet of touch data from the device into a
fixed-size on-stack buffer
struct mms114_touch touch[MMS114_MAX_TOUCH];
which holds MMS114_MAX_TOUCH (10) events of MMS114_EVENT_SIZE (8) bytes,
i.e. 80 bytes. The length of the I2C read into it is taken verbatim from
the device:
packet_size = mms114_read_reg(data, MMS114_PACKET_SIZE);
if (packet_size <= 0)
goto out;
...
error = __mms114_read_reg(data, MMS114_INFORMATION, packet_size,
(u8 *)touch);
packet_size is a single device register byte (0x0F) and the only check
is the lower bound packet_size <= 0; it is never bounded against the
size of touch[]. A malfunctioning, malicious or counterfeit controller
(or an attacker tampering with the I2C bus) can report a packet_size of
up to 255, so __mms114_read_reg() writes up to 175 bytes past the end of
touch[] on the IRQ-thread stack: a stack out-of-bounds write that can
overwrite the stack canary, saved registers and the return address.
A well-formed device never reports more than the buffer holds, so reject
an oversized packet and drop the report, consistent with the handler's
other error paths, rather than reading past the buffer.
Fixes: 07b8481d4a ("Input: add MELFAS mms114 touchscreen driver")
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260612-b4-disp-dc4b8dc4-v1-1-d7cb0a828d92@proton.me
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
tw_interrupt() accumulates each non-zero serial byte into a fixed
three-byte buffer with a running index that is only reset once a full
packet has been received *and* the device's two Y bytes agree:
tw->data[tw->idx++] = data;
if (tw->idx == TW_LENGTH && tw->data[1] == tw->data[2]) {
...
tw->idx = 0;
}
The reset is gated on tw->data[1] == tw->data[2], a value the device
controls. A malicious, malfunctioning or counterfeit Touchwindow
peripheral can stream non-zero bytes whose 2nd and 3rd bytes differ: the
index reaches TW_LENGTH without the equality holding, is never reset, and
keeps growing, so tw->data[tw->idx++] walks off the end of the three-byte
array and the rest of the heap-allocated struct tw, one attacker-chosen
byte at a time -- an unbounded, device-driven heap out-of-bounds write.
Reset the index on every completed packet and report an event only when
the two Y bytes match, like the other serio touchscreen drivers do.
Fixes: 11ea3173d5 ("Input: add driver for Touchwin serial touchscreens")
Cc: stable@vger.kernel.org
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Link: https://patch.msgid.link/20260613-b4-disp-69921bfd-v1-1-82c036899959@proton.me
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Propagate the actual error code returned by rmi_read() in
rmi_f12_read_sensor_tuning() instead of hardcoding -ENODEV.
Also, since rmi_read() returns 0 on success, use 'if (ret)'
instead of 'if (ret < 0)'.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-19-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Use min_t() to simplify the clamping logic when calculating the
number of objects to process and the number of valid bytes in the
attention handler.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-18-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Using sizeof(*ptr) is preferred over sizeof(struct) because it is
more robust against type changes. Also switch to checking for
allocation failure immediately after each call, and update
formatting.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-17-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The sensor->data_pkt buffer is used exclusively to store incoming
hardware data during the attention handler, where it is entirely
overwritten by either memcpy() or rmi_read_block(). Therefore,
there is no need to zero-initialize it during probe.
Switch to devm_kmalloc() to avoid the unnecessary memset overhead.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-16-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Use a flexible array member to allocate the IRQ masks at the end of
the f12_data structure, and use the struct_size() helper to
calculate the allocation size safely. This replaces manual pointer
arithmetic.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-15-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Use get_unaligned_le16() instead of manual bit shifts to construct
16-bit values for max_x, max_y, pitch_x, pitch_y, and object
coordinates in the F12 parsing logic. This simplifies the code and
makes the endianness explicit.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-14-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Change reg_size from unsigned long to u32 to save space and ensure
consistent size across 32-bit and 64-bit architectures, and use
DECLARE_BITMAP() for subpacket_map.
Also pack the structure by rearranging the members to avoid holes,
and use size_add() to prevent potential integer overflows when
calculating the total size of registers.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-13-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The F12 probe function contains highly repetitive logic for parsing
register descriptors and their individual data items. Refactor the
function to use loops to eliminate redundancy, and clarify the code.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-12-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
struct rmi_function contains a flexible array member irq_mask.
Convert the manual kzalloc size calculation to use the kzalloc_flex()
macro.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-11-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Currently, rmi_create_function() allocates memory for the rmi_function
structure, but rmi_register_function() initializes the device via
device_initialize(). This split of ownership makes error handling in
rmi_create_function() confusing because the caller must be aware that
if rmi_register_function() fails, it has already called put_device() to
clean up the memory.
To make the memory lifecycle explicit and fix potential leaks cleanly
introduce rmi_alloc_function() to handle memory allocation and device
initialization, and make the caller of rmi_register_function()
responsible for cleanup.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-10-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The presence map is only used during the parsing of the register
descriptor, so we can make it a local variable instead of storing it
in struct rmi_register_descriptor.
Also fix the spelling of the constant and the variable name (presence
instead of presense).
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-9-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
rmi_register_desc_has_subpacket() should use RMI_REG_DESC_SUBPACKET_BITS,
not RMI_REG_DESC_PRESENCE_BITS, as the limit for subpacket_map.
Fixes: 2b6a321da9 ("Input: synaptics-rmi4 - add support for Synaptics RMI4 devices")
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-8-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
bitmap_copy() takes number of bits, not bytes (or longs). Correct
the bit count in rmi_driver_set_irq_bits() and
rmi_driver_clear_irq_bits().
Fixes: 2b6a321da9 ("Input: synaptics-rmi4 - add support for Synaptics RMI4 devices")
Cc: stable@vger.kernel.org
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-7-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
attn_fifo is allocated as part of struct rmi_driver_data using
devm_kzalloc in rmi_driver_probe. However, it is never initialized.
A zero-initialized kfifo has its mask set to 0, which effectively
limits its capacity to 1 element instead of the declared 16.
This can lead to lost attention data and memory leaks of the attention
data payload if multiple attention events are received before the
threaded interrupt handler can process them.
Initialize attn_fifo using INIT_KFIFO after allocating rmi_driver_data.
Reported-by: sashiko-bot@kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
RMI_REG_DESC_SUBPACKET_BITS is defined as 296 (37 * BITS_PER_BYTE). This
may overflow num_subpackets in struct rmi_register_desc_item which is
defined as a u8.
Fix this by changing the type of num_subpackets to u16.
Fixes: 2b6a321da9 ("Input: synaptics-rmi4 - add support for Synaptics RMI4 devices")
Cc: stable@vger.kernel.org
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-4-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The number of registers in the RMI4 register descriptor is populated
by counting the bits in the presence map using bitmap_weight(). Since
the presence map can contain up to 256 bits (RMI_REG_DESC_PRESENSE_BITS),
storing this count in a u8 can overflow to 0 if all 256 bits are set.
Change the num_registers field in struct rmi_register_descriptor
from u8 to u16 to prevent potential integer overflow and ensure safe
processing of devices reporting large descriptors.
Fixes: 2b6a321da9 ("Input: synaptics-rmi4 - add support for Synaptics RMI4 devices")
Cc: stable@vger.kernel.org
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-3-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Factor out parsing a register descriptor item from
rmi_read_register_desc() and ensure there are no out-of-bounds accesses.
Use get_unaligned_le16() and get_unaligned_le32() for reading multi-byte
values.
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes: 2b6a321da9 ("Input: synaptics-rmi4 - add support for Synaptics RMI4 devices")
Cc: stable@vger.kernel.org
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-2-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
When reading the register descriptor, the base address is incremented by
1 to read the presence register block. However, after reading the
presence register block, the address is incorrectly incremented by only
1 byte (++addr) instead of the actual size of the presence block
(size_presence_reg). This causes the subsequent structure block read to
read from the wrong memory location if the presence block is larger than
1 byte.
Fix this by advancing the address by size_presence_reg.
Fixes: 2b6a321da9 ("Input: synaptics-rmi4 - add support for Synaptics RMI4 devices")
Cc: stable@vger.kernel.org
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/20260505045952.1570713-1-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver accesses the message payload (msg[0]) without checking if
the length is greater than zero. The parent MFD driver can produce a
payload with a length of 0, in which case msg[0] would be uninitialized
or stale.
Add a check to return early if len is less than 1.
Reported-by: sashiko-bot@kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Link: https://patch.msgid.link/aintAvTyw4CVb5hG@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver acquires the micro->lock spinlock in process context (in
micro_key_start() and micro_key_stop()) without disabling interrupts.
However, this lock is also acquired in hardirq context by the MFD core
rx handler (micro_rx_msg()) which is called from the serial ISR.
This can lead to a lock inversion deadlock if the interrupt fires on the
same CPU while the process context holds the lock.
Fix this by using guard(spinlock_irq) instead of guard(spinlock) in
micro_key_start() and micro_key_stop() to disable interrupts while
holding the lock.
Reported-by: sashiko-bot@kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Link: https://patch.msgid.link/aij-pfaKK-Nna7wf@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
If rmi_register_physical_driver() fails, the current error path
unregisters only the RMI bus. The function handlers registered
earlier remain registered with the driver core.
Add a separate error path to unregister the function handlers
before unregistering the bus in this failure case.
Fixes: 2b6a321da9 ("Input: synaptics-rmi4 - add support for Synaptics RMI4 devices")
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260610064633.2837084-1-haoxiang_li2024@163.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The workaround for XPT2046 clears the command register, giving the
touchscreen controller a NOP. The change incorrectly re-uses the
req->scratch variable which is used as rx_buf for xfer[5], so by
the time xfer[6] occurs, the contents of req->scratch may not be
0. It was found that the touchscreen controller can end up in
a completely unresponsive state due to it being given a command
the driver does not expect.
Instead, rely on the spi_transfer behavior of tx_buf being NULL to
transmit all 0 bits and use the scratch variable for the rx_buf for
both the 1 byte command to and 2 byte response from the controller.
Also relocates the scratch member of struct ser_req to force it
into a different cache line to prevent any potential issues of
DMA stepping on unrelated data in other struct members due to
sharing the same cache line.
This change was tested on real TSC2046 and ADS7843 controllers,
but not the XPT2046 the workaround was originally created for.
Confirming that the original modification to clear the command
register does not impact either real controller.
Fixes: 781a07da9b ("Input: ads7846 - add dummy command register clearing cycle")
Cc: stable@vger.kernel.org
Co-developed-by: Mark Featherston <mark@embeddedTS.com>
Signed-off-by: Mark Featherston <mark@embeddedTS.com>
Signed-off-by: Kris Bahnsen <kris@embeddedTS.com>
Link: https://patch.msgid.link/20260507164943.760009-1-kris@embeddedTS.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
On some boards, the SPI controller is limited to half-duplex and the driver
fails spamming "ads7846 spi2.1: spi_sync --> -22". Restore half-duplex
support with multiple SPI transfers.
Fixes: 9c9509717b ("Input: ads7846 - convert to full duplex")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Link: https://patch.msgid.link/20260419161848.825831-2-aaro.koskinen@iki.fi
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Explicitly assigning .driver_data in drivers that don't use this member
is silly and a bit irritating. Drop these. Also simplify the list
terminator entry to be just empty to match what most other device_id
tables do.
There is no changed semantic, not even a change in the compiled result.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/f987c14dea1d3236d3889e5cf96c01eef6a2445d.1781016727.git.u.kleine-koenig@baylibre.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver parses CDC union descriptors in ims_pcu_get_cdc_union_desc()
by iterating through the extra descriptor data. However, it does not
verify that the bLength of each descriptor is at least 2. A malicious
device could provide a descriptor with bLength = 0, leading to an
infinite loop in the driver.
Add a check to ensure bLength is at least 2 before proceeding with
parsing.
Fixes: 628329d524 (Input: add IMS Passenger Control Unit driver)
Cc: stable@vger.kernel.org
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver processes response data from device buffers without verifying
that the device actually sent enough data. This can lead to
out-of-bounds reads or processing stale data.
Add checks for the expected response length before accessing the
buffers.
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
In ims_pcu_line_setup(), the driver uses pcu->cmd_buf as a transfer
buffer for usb_control_msg(). However, pcu->cmd_buf is embedded in the
struct ims_pcu allocation, which violates DMA mapping rules regarding
cacheline alignment.
Use a heap-allocated buffer for the line coding data instead.
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The debug logging in ims_pcu_irq() unconditionally prints data from
pcu->urb_in_buf. However, if the interrupt fired for pcu->urb_ctrl, the
actual data resides in pcu->urb_ctrl_buf. If urb->actual_length for the
control URB exceeds pcu->max_in_size, this leads to an out-of-bounds
read.
Fix this by printing from the correct buffer associated with the URB.
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver currently assumes that the first endpoint of the control
interface is an interrupt IN endpoint without verifying it. A malicious
device could provide a different endpoint type, which would then be
passed to usb_fill_int_urb(), potentially leading to kernel warnings
or undefined behavior.
Verify that the control endpoint is an interrupt IN endpoint.
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The ims_pcu_reset_device() sysfs callback calls ims_pcu_execute_command()
without acquiring pcu->cmd_mutex. This can lead to data races and
corruption of the shared command buffer if triggered concurrently with
other commands.
Acquire pcu->cmd_mutex before calling ims_pcu_execute_command().
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The firmware object was not being released if validation failed.
Use __free(firmware) to ensure the firmware is always released.
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
The driver currently trusts the bMasterInterface0 from the CDC union
descriptor without verifying that it matches the interface being
probed. This could lead to the driver overwriting the private data of
another interface.
Validate that the control interface found in the descriptor is indeed
the one we are probing.
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
ims_pcu_disconnect() only intended to perform cleanup when the primary
(control) interface is unbound. However, it currently relies on the
interface class to distinguish between control and data interfaces.
A malicious device could present a data interface with the same class
as the control interface, leading to premature cleanup and potential
use-after-free or double-free.
Switch to verifying that the interface being disconnected is indeed
the control interface.
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
During probe the driver claims the data interface, but it never releases
it. Release it in disconnect to avoid leaving it permanently claimed.
Fixes: 628329d524 ("Input: add IMS Passenger Control Unit driver")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
ims_pcu_reset_packet() incorrectly sets have_stx to true, which implies
that the start-of-packet delimiter has already been received. This
causes the protocol parser to skip waiting for the next STX byte and
potentially process garbage data.
Correctly set have_stx to false when resetting the packet state.
Fixes: 875115b82c ("Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()")
Cc: stable@vger.kernel.org
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
When the driver was converted to use the driver core to instantiate device
attributes (via .dev_groups in the usb_driver structure), the attributes
started appearing on all interfaces bound to the driver. Since the ims-pcu
driver manually claims the secondary data interface during probe, the
driver core automatically creates the sysfs attributes for that interface
as well.
However, the driver only supports these attributes on the primary control
interface. Data interfaces lack the necessary descriptors and internal
state to handle these requests, and accessing them can lead to unexpected
behavior or crashes.
Fix this by updating the is_visible() callbacks for both the main and OFN
attribute groups to verify that the interface being accessed is indeed the
control interface.
Fixes: 204d18a7a0 ("Input: ims-pcu - use driver core to instantiate device attributes")
Reported-by: Sashiko bot <sashiko-bot@kernel.org>
Assisted-by: Gemini:gemini-3.1-pro
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/ahp23lj4_vXIeUBl@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Rework the driver to use modern style:
- Remove global state by introducing a per-device structure
- Use devm for resource management (input device allocation)
- Use dev_err_probe() for error reporting in the probe path
- Clean up unused definitions and headers.
Assisted-by: Gemini:gemini-3.1-pro
Link: https://patch.msgid.link/ahp6qt_viW3l-NlX@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Simplify resource mapping by using devm_platform_ioremap_resource()
instead of the longer devm_platform_get_and_ioremap_resource() helper
as the last argument is NULL.
Additionally, use platform_get_irq() to retrieve the interrupt
instead of irq_of_parse_and_map() and propagate its error code on
failure. irq_of_parse_and_map() requires irq_dispose_mapping, which is
missing.
Assisted-by: Antigravity:Gemini-3.5-Flash
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260603192415.6679-1-rosenp@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Remove the Xilinx XPS PS/2 controller driver. This driver supports an
old Xilinx EDK IP core that is no longer in active use. The hardware
is not available on modern platforms, and the driver has no users here.
Assisted-by: opencode:big-pickle
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260603054217.442016-1-rosenp@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Previously, only the type value was settable. The proto value is used
internally for choosing the right drivers, so we should expose it. The
other values make sense to expose as well.
Signed-off-by: Vicki Pfau <vi@endrift.com>
Link: https://patch.msgid.link/20260522015040.3953472-2-vi@endrift.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Merge tag 'v7.1-rc6' into next
Sync up with mainline to pull in a fix to IMS PCU driver and other
enhancements.
