Shin'ichiro Kawasaki 847e1eb30e platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe ... commit 5913320eb0 upstream. p2sb_bar() unhides P2SB device to get resources from the device. It guards the operation by locking pci_rescan_remove_lock so that parallel rescans do not find the P2SB device. However, this lock causes deadlock when PCI bus rescan is triggered by /sys/bus/pci/rescan. The rescan locks pci_rescan_remove_lock and probes PCI devices. When PCI devices call p2sb_bar() during probe, it locks pci_rescan_remove_lock again. Hence the deadlock. To avoid the deadlock, do not lock pci_rescan_remove_lock in p2sb_bar(). Instead, do the lock at fs_initcall. Introduce p2sb_cache_resources() for fs_initcall which gets and caches the P2SB resources. At p2sb_bar(), refer the cache and return to the caller. Before operating the device at P2SB DEVFN for resource cache, check that its device class is PCI_CLASS_MEMORY_OTHER 0x0580 that PCH specifications define. This avoids unexpected operation to other devices at the same DEVFN. Link: https://lore.kernel.org/linux-pci/6xb24fjmptxxn5js2fjrrddjae6twex5bjaftwqsuawuqqqydx@7cl3uik5ef6j/ Fixes: 9745fb0747 ("platform/x86/intel: Add Primary to Sideband (P2SB) bridge support") Cc: stable@vger.kernel.org Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Link: https://lore.kernel.org/r/20240108062059.3583028-2-shinichiro.kawasaki@wdc.com Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Tested-by Klara Modin <klarasmodin@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-01-31 16:19:07 -08:00
..
accel	accel/habanalabs: fix information leak in sec_attest_info()	2024-01-25 15:35:38 -08:00
accessibility
acpi	acpi: property: Let args be NULL in __acpi_node_get_property_reference	2024-01-25 15:35:51 -08:00
amba
android	binder: fix race between mmput() and do_exit()	2024-01-25 15:35:42 -08:00
ata	scsi: sd: Fix system start for ATA devices	2023-12-08 08:52:17 +01:00
atm	atm: solos-pci: Fix potential deadlock on &tx_queue_lock	2023-12-20 17:01:46 +01:00
auxdisplay	drm for 6.6-rc1	2023-08-30 13:34:34 -07:00
base	rtc: Extend timeout for waiting for UIP to clear to 1s	2024-01-31 16:18:56 -08:00
bcma
block	rbd: don't move requests to the running list on errors	2024-01-31 16:19:06 -08:00
bluetooth	Bluetooth: btmtkuart: fix recv_buf() return value	2024-01-25 15:35:29 -08:00
bus	bus: mhi: host: Add spinlock to protect WP access when queueing TREs	2024-01-31 16:18:52 -08:00
cache	riscv: RISCV_NONSTANDARD_CACHE_OPS shouldn't depend on RISCV_DMA_NONCOHERENT	2023-10-26 09:42:37 +02:00
cdrom
cdx
char	hwrng: core - Fix page fault dead lock on mmap-ed hwrng	2024-01-31 16:18:50 -08:00
clk	clk: qcom: dispcc-sm8550: Update disp PLL settings	2024-01-25 15:35:38 -08:00
clocksource	clocksource/drivers/timer-ti-dm: Fix make W=n kerneldoc warnings	2024-01-25 15:35:42 -08:00
comedi	Revert "comedi: add HAS_IOPORT dependencies"	2023-09-12 15:49:20 +02:00
connector	connector: Fix proc_event_num_listeners count not cleared	2024-01-20 11:51:47 +01:00
counter	First set of Counter fixes for 6.6	2023-10-02 13:13:15 +02:00
cpufreq	cpufreq: scmi: process the result of devm_of_clk_add_hw_provider()	2024-01-25 15:35:14 -08:00
cpuidle	cpuidle: haltpoll: Do not enable interrupts when entering idle	2024-01-25 15:35:15 -08:00
crypto	crypto: sahara - do not resize req->src when doing hash operations	2024-01-25 15:35:18 -08:00
cxl	cxl/port: Fix missing target list lock	2024-01-25 15:35:55 -08:00
dax
dca
devfreq	PM / devfreq: Fix buffer overflow in trans_stat_show	2024-01-31 16:18:50 -08:00
dio
dma	dmaengine: idxd: Move dma_free_coherent() out of spinlocked context	2024-01-31 16:18:47 -08:00
dma-buf	dma-buf: fix check in dma_resv_add_fence	2023-12-08 08:52:19 +01:00
edac	EDAC/thunderx: Fix possible out-of-bounds string access	2024-01-25 15:35:12 -08:00
eisa
extcon
firewire	firewire: ohci: suppress unexpected system reboot in AMD Ryzen machines and ASM108x/VT630x PCIe cards	2024-01-10 17:17:00 +01:00
firmware	firmware: ti_sci: Fix an off-by-one in ti_sci_debugfs_create()	2024-01-25 15:35:20 -08:00
fpga	fpga: Fix memory leak for fpga_region_test_class_find()	2023-10-24 19:32:39 +02:00
fsi
gnss
gpio	gpio: mlxbf3: add an error code check in mlxbf3_gpio_probe	2024-01-25 15:35:58 -08:00
gpu	Revert "drm/amd: Enable PCIe PME from D3"	2024-01-31 16:19:00 -08:00
greybus
hid	HID: wacom: Correct behavior when processing some confidence == false touches	2024-01-25 15:35:48 -08:00
hsi
hte	hte: tegra: Fix missing error code in tegra_hte_test_probe()	2023-11-20 11:59:08 +01:00
hv	hyperv-next for v6.6	2023-09-04 11:26:29 -07:00
hwmon	hwmon: (corsair-psu) Fix probe when built-in	2024-01-20 11:51:42 +01:00
hwspinlock
hwtracing	coresight: etm4x: Fix width of CCITMIN field	2024-01-20 11:51:49 +01:00
i2c	i2c: s3c24xx: fix transferring more than one message in polling mode	2024-01-25 15:36:01 -08:00
i3c	i3c: master: svc: fix random hot join failure since timeout error	2023-11-28 17:20:06 +00:00
idle	x86: Fix CPUIDLE_FLAG_IRQ_ENABLE leaking timer reprogram	2024-01-25 15:35:12 -08:00
iio	iio: adc: ad7091r: Enable internal vref if external vref is not supplied	2024-01-31 16:18:47 -08:00
infiniband	IB/iser: Prevent invalidating wrong MR	2024-01-25 15:35:40 -08:00
input	Input: atkbd - use ab83 as id when skipping the getid command	2024-01-25 15:35:41 -08:00
interconnect	interconnect: qcom: sm8250: Enable sync_state	2024-01-01 12:42:36 +00:00
iommu	iommu: Don't reserve 0-length IOVA region	2024-01-25 15:35:54 -08:00
ipack
irqchip	irqchip/gic-v3-its: Flush ITS tables correctly in non-coherent GIC designs	2023-12-03 07:33:02 +01:00
isdn	isdn: mISDN: hfcsusb: Spelling fix in comment	2023-10-23 09:39:46 +01:00
leds	leds: aw200xx: Fix write to DIM parameter	2024-01-25 15:35:49 -08:00
macintosh	powerpc updates for 6.6	2023-08-31 12:43:10 -07:00
mailbox	mailbox: qcom-ipcc: fix incorrect num_chans counting	2023-09-05 10:11:01 -05:00
mcb	mcb: fix error handling for different scenarios when parsing	2023-11-28 17:20:05 +00:00
md	Revert "Revert "md/raid5: Wait for MD_SB_CHANGE_PENDING in raid5d""	2024-01-25 15:36:01 -08:00
media	media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run	2024-01-31 16:18:55 -08:00
memory	memory: tegra: Set BPMP msg flags to reset IPC channels	2023-11-20 11:59:17 +01:00
memstick
message
mfd	mfd: intel-lpss: Fix the fractional clock divider flags	2024-01-25 15:35:49 -08:00
misc	misc: mei: client.c: fix problem of return '-EOVERFLOW' in mei_cl_write	2023-12-13 18:45:29 +01:00
mmc	mmc: mmc_spi: remove custom DMA mapped buffers	2024-01-31 16:18:55 -08:00
most
mtd	mtd: rawnand: Clarify conditions to enable continuous reads	2024-01-31 16:18:50 -08:00
mux	mux: Explicitly include correct DT includes	2023-08-28 13:36:24 -05:00
net	hv_netvsc: Calculate correct ring size when PAGE_SIZE is not 4 Kbytes	2024-01-31 16:19:06 -08:00
nfc	nfc: virtual_ncidev: Add variable to check if ndev is running	2023-12-20 17:01:59 +01:00
ntb
nubus
nvdimm	nd_btt: Make BTT lanes preemptible	2023-11-20 11:59:19 +01:00
nvme	nvmet-tcp: Fix the H2C expected PDU len calculation	2024-01-25 15:35:55 -08:00
nvmem	nvmem: brcm_nvram: store a copy of NVRAM content	2024-01-01 12:42:44 +00:00
of	of: unittest: Fix of_count_phandle_with_args() expected value message	2024-01-25 15:35:40 -08:00
opp	OPP: Pass rounded rate to _set_opp()	2024-01-31 16:18:49 -08:00
parisc	parisc/power: Fix power soft-off button emulation on qemu	2024-01-31 16:18:52 -08:00
parport	parport: parport_serial: Add Brainboxes device IDs and geometry	2024-01-20 11:51:48 +01:00
pci	PCI: mediatek-gen3: Fix translation window size calculation	2024-01-25 15:35:55 -08:00
pcmcia	pcmcia: ds: fix possible name leak in error path in pcmcia_device_add()	2023-11-20 11:59:31 +01:00
peci
perf	drivers/perf: hisi: Fix some event id for HiSilicon UC pmu	2024-01-25 15:35:13 -08:00
phy	phy: sunplus: return negative error code in sp_usb_phy_probe	2024-01-10 17:16:57 +01:00
pinctrl	pinctrl: cy8c95x0: Fix get_pincfg	2024-01-20 11:51:46 +01:00
platform	platform/x86: p2sb: Allow p2sb_bar() calls during PCI device probe	2024-01-31 16:19:07 -08:00
pmdomain	pmdomain: imx: Make imx pgc power domain also set the fwnode	2023-11-28 17:20:00 +00:00
pnp
power	power: supply: Fix null pointer dereference in smb2_probe	2024-01-25 15:35:54 -08:00
powercap	powercap: DTPM: Fix missing cpufreq_cpu_put() calls	2023-12-13 18:45:25 +01:00
pps
ps3
ptp	ptp: annotate data-race around q->head and q->tail	2023-11-28 17:19:51 +00:00
pwm	pwm: Fix out-of-bounds access in of_pwm_single_xlate()	2024-01-25 15:35:46 -08:00
rapidio
ras
regulator	regulator: qcom-rpmh: Fix smps4 regulator for pm8550ve	2023-11-20 11:59:07 +01:00
remoteproc	remoteproc updates for v6.6	2023-09-04 15:12:26 -07:00
reset	reset: hisilicon: hi6220: fix Wvoid-pointer-to-enum-cast warning	2024-01-20 11:51:44 +01:00
rpmsg	rpmsg: virtio: Free driver_override when rpmsg_remove()	2024-01-31 16:18:50 -08:00
rtc	rtc: Extend timeout for waiting for UIP to clear to 1s	2024-01-31 16:18:56 -08:00
s390	s390/vfio-ap: do not reset queue removed from host config	2024-01-31 16:18:51 -08:00
sbus	sbus: Explicitly include correct DT includes	2023-08-28 13:36:24 -05:00
scsi	scsi: core: Kick the requeue list after inserting when flushing	2024-01-31 16:18:48 -08:00
sh
siox
slimbus
soc	soc: fsl: cpm1: qmc: Fix rx channel reset	2024-01-31 16:18:51 -08:00
soundwire	soundwire: fix initializing sysfs for same devices on different buses	2024-01-31 16:18:47 -08:00
spi	spi: coldfire-qspi: Remove an erroneous clk_disable_unprepare() from the remove function	2024-01-25 15:35:55 -08:00
spmi	spmi: mtk-pmif: Serialize PMIF status check and command submission	2024-01-25 15:35:53 -08:00
ssb
staging	media: rkvdec: Hook the (TRY_)DECODER_CMD stateless ioctls	2024-01-25 15:35:32 -08:00
target	scsi: target: core: add missing file_{start,end}_write()	2024-01-25 15:35:45 -08:00
tc
tee	tee: optee: Fix supplicant based device enumeration	2023-12-13 18:45:11 +01:00
thermal	drivers/thermal/loongson2_thermal: Fix incorrect PTR_ERR() judgment	2024-01-25 15:35:15 -08:00
thunderbolt	thunderbolt: Fix memory leak in margining_port_remove()	2024-01-01 12:42:46 +00:00
tty	serial: Do not hold the port lock when setting rx-during-tx GPIO	2024-01-31 16:18:58 -08:00
ufs	scsi: ufs: core: Remove the ufshcd_hba_exit() call from ufshcd_async_scan()	2024-01-31 16:18:48 -08:00
uio	uio: Fix use-after-free in uio_open	2024-01-20 11:51:48 +01:00
usb	usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer	2024-01-25 15:35:54 -08:00
vdpa	vdpa: Fix an error handling path in eni_vdpa_probe()	2024-01-25 15:35:54 -08:00
vfio	hisi_acc_vfio_pci: Update migration data pointer correctly on saving/resume	2024-01-25 15:35:55 -08:00
vhost	virtio/vsock: send credit update during setting SO_RCVLOWAT	2024-01-25 15:35:26 -08:00
video	fbdev: flush deferred IO before closing	2024-01-25 15:35:45 -08:00
virt	virt: sevguest: Fix passing a stack buffer as a scatterlist target	2023-11-20 11:59:30 +01:00
virtio	virtio_ring: fix syncs DMA memory with different direction	2024-01-05 15:19:41 +01:00
vlynq
w1	w1: ds2482: Switch back to use struct i2c_driver's .probe()	2023-09-13 10:48:42 +02:00
watchdog	watchdog: rti_wdt: Drop runtime pm reference count when watchdog is unused	2024-01-25 15:35:37 -08:00
xen	swiotlb-xen: provide the "max_mapping_size" method	2023-12-03 07:33:07 +01:00
zorro
Kconfig	Merge patch series "Add non-coherent DMA support for AX45MP"	2023-09-08 11:24:34 -07:00
Makefile	pmdomain: Rename the genpd subsystem to pmdomain	2023-09-13 11:09:21 +02:00