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fae0e055d0
linux/drivers
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Ilpo Järvinen fae0e055d0 PCI: Do not wait for disconnected devices when resuming 
[ Upstream commit 6613443ffc ]

On runtime resume, pci_dev_wait() is called:

  pci_pm_runtime_resume()
    pci_pm_bridge_power_up_actions()
      pci_bridge_wait_for_secondary_bus()
        pci_dev_wait()

While a device is runtime suspended along with its PCI hierarchy, the
device could get disconnected. In such case, the link will not come up no
matter how long pci_dev_wait() waits for it.

Besides the above mentioned case, there could be other ways to get the
device disconnected while pci_dev_wait() is waiting for the link to come
up.

Make pci_dev_wait() exit if the device is already disconnected to avoid
unnecessary delay.

The use cases of pci_dev_wait() boil down to two:

  1. Waiting for the device after reset
  2. pci_bridge_wait_for_secondary_bus()

The callers in both cases seem to benefit from propagating the
disconnection as error even if device disconnection would be more
analoguous to the case where there is no device in the first place which
return 0 from pci_dev_wait(). In the case 2, it results in unnecessary
marking of the devices disconnected again but that is just harmless extra
work.

Also make sure compiler does not become too clever with dev->error_state
and use READ_ONCE() to force a fetch for the up-to-date value.

Link: https://lore.kernel.org/r/20240208132322.4811-1-ilpo.jarvinen@linux.intel.com
Reported-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-06-27 13:49:05 +02:00
..
accel kthread: add kthread_stop_put 2024-06-12 11:12:52 +02:00
accessibility speakup: Fix sizeof() vs ARRAY_SIZE() bug 2024-06-12 11:11:18 +02:00
acpi ACPI: EC: Install address space handler at the namespace root 2024-06-27 13:49:05 +02:00
amba
android binder: fix max_thread type inconsistency 2024-05-25 16:22:54 +02:00
ata ata: pata_legacy: make legacy_exit() work again 2024-06-16 13:47:33 +02:00
atm atm: idt77252: fix a memleak in open_card_ubr0 2024-02-16 19:10:49 +01:00
auxdisplay
base drivers: core: synchronize really_probe() and dev_uevent() 2024-06-21 14:38:37 +02:00
bcma
block null_blk: Print correct max open zones limit in null_init_zoned_dev() 2024-06-21 14:38:40 +02:00
bluetooth Bluetooth: ath3k: Fix multiple issues reported by checkpatch.pl 2024-06-27 13:49:02 +02:00
bus bus: mhi: host: Add MHI_PM_SYS_ERR_FAIL state 2024-04-13 13:07:38 +02:00
cache cache: ax45mp_cache: Align end size to cache boundary in ax45mp_dma_cache_wback() 2024-03-01 13:35:08 +01:00
cdrom
cdx
char tpm_tis: Do *not* flush uninitialized work 2024-06-16 13:47:41 +02:00
clk clkdev: Update clkdev id usage to allow for longer names 2024-06-21 14:38:38 +02:00
clocksource clocksource/drivers/arm_global_timer: Fix maximum prescaler value 2024-04-03 15:28:50 +02:00
comedi comedi: vmk80xx: fix incomplete endpoint checking 2024-04-27 17:11:39 +02:00
connector connector/cn_proc: revert "connector: Fix proc_event_num_listeners count not cleared" 2024-02-23 09:25:01 +01:00
counter
cpufreq cpufreq: amd-pstate: fix memory leak on CPU EPP exit 2024-06-27 13:49:05 +02:00
cpuidle cpuidle: Avoid potential overflow in integer multiplication 2024-04-13 13:07:29 +02:00
crypto crypto: hisilicon/qm - Add the err memory release process to qm uninit 2024-06-27 13:49:00 +02:00
cxl cxl/region: Fix memregion leaks in devm_cxl_add_region() 2024-06-21 14:38:26 +02:00
dax
dca
devfreq PM / devfreq: Synchronize devfreq_monitor_[start/stop] 2024-02-05 20:14:15 +00:00
dio
dma Avoid hw_desc array overrun in dw-axi-dmac 2024-06-27 13:49:04 +02:00
dma-buf dma-buf: handle testing kthreads creation failure 2024-06-21 14:38:40 +02:00
edac EDAC/igen6: Convert PCIBIOS_* return codes to errnos 2024-06-16 13:47:47 +02:00
eisa
extcon extcon: max8997: select IRQ_DOMAIN instead of depending on it 2024-06-12 11:12:27 +02:00
firewire firewire: ohci: fulfill timestamp for some local asynchronous transaction 2024-05-17 12:02:30 +02:00
firmware firmware: qcom_scm: disable clocks if qcom_scm_bw_enable() fails 2024-06-21 14:38:21 +02:00
fpga fpga: region: add owner module and take its refcount 2024-06-12 11:12:23 +02:00
fsi
gnss
gpio gpio: tqmx86: fix broken IRQ_TYPE_EDGE_BOTH interrupt type 2024-06-21 14:38:30 +02:00
gpu drm/lima: mask irqs in timeout path before hard reset 2024-06-27 13:49:03 +02:00
greybus greybus: Fix use-after-free bug in gb_interface_release due to race condition. 2024-06-21 14:38:48 +02:00
hid HID: asus: fix more n-key report descriptors if n-key quirked 2024-06-27 13:49:02 +02:00
hsi
hte
hv Drivers: hv: vmbus: Don't free ring buffers that couldn't be re-encrypted 2024-05-17 12:02:17 +02:00
hwmon hwmon: (shtc1) Fix property misspelling 2024-06-12 11:13:00 +02:00
hwspinlock
hwtracing intel_th: pci: Add Lunar Lake support 2024-06-21 14:38:43 +02:00
i2c i2c: designware: Fix the functionality flags of the slave-only interface 2024-06-21 14:38:50 +02:00
i3c i3c: master: svc: fix invalidate IBI type and miss call client IBI handler 2024-06-16 13:47:46 +02:00
idle
iio iio: invensense: fix interrupt timestamp alignment 2024-06-21 14:38:42 +02:00
infiniband RDMA/bnxt_re: Fix the sparse warnings 2024-06-12 11:13:02 +02:00
input Input: cyapa - add missing input core locking to suspend/resume functions 2024-06-12 11:12:40 +02:00
interconnect interconnect: qcom: qcm2290: Fix mas_snoc_bimc QoS port assignment 2024-06-12 11:12:18 +02:00
iommu iommu/arm-smmu-v3: Free MSIs in case of ENOMEM 2024-06-27 13:49:03 +02:00
ipack
irqchip irqchip/gic-v3-its: Fix potential race condition in its_vlpi_prop_update() 2024-06-21 14:38:39 +02:00
isdn
leds leds: pwm: Disable PWM when going to suspend 2024-06-12 11:12:24 +02:00
macintosh macintosh/via-macii: Fix "BUG: sleeping function called from invalid context" 2024-06-12 11:11:47 +02:00
mailbox mailbox: arm_mhuv2: Fix a bug for mhuv2_sender_interrupt 2024-02-05 20:14:31 +00:00
mcb
md md/raid5: fix deadlock that raid5d() wait for itself to clear MD_SB_CHANGE_PENDING 2024-06-16 13:47:34 +02:00
media media: mtk-vcodec: potential null pointer deference in SCP 2024-06-27 13:49:03 +02:00
memory memory: tegra: Correct DLA client names 2024-03-26 18:19:32 -04:00
memstick
message
mfd mfd: cs42l43: Fix wrong GPIO_FN_SEL and SPI_CLK_CONFIG1 defaults 2024-03-26 18:19:55 -04:00
misc misc: microchip: pci1xxxx: Fix a memory leak in the error handling of gp_aux_bus_probe() 2024-06-21 14:38:49 +02:00
mmc mmc: sdhci-acpi: Add quirk to enable pull-up on the card-detect GPIO on Asus T100TA 2024-06-16 13:47:37 +02:00
most
mtd mtd: rawnand: hynix: fixed typo 2024-06-12 11:11:58 +02:00
mux
net wifi: mt76: mt7921s: fix potential hung tasks during chip recovery 2024-06-27 13:49:02 +02:00
nfc NFC: trf7970a: disable all regulators on removal 2024-05-02 16:32:36 +02:00
ntb NTB: fix possible name leak in ntb_register_device() 2024-03-26 18:19:48 -04:00
nubus
nvdimm
nvme nvmet-passthru: propagate status from id override functions 2024-06-21 14:38:35 +02:00
nvmem nvmem: add explicit config option to read old syntax fixed OF cells 2024-05-17 12:01:55 +02:00
of of: module: add buffer overflow check in of_modalias() 2024-06-12 11:12:10 +02:00
opp OPP: debugfs: Fix warning around icc_get_name() 2024-03-26 18:19:40 -04:00
parisc parisc/power: Fix power soft-off button emulation on qemu 2024-01-31 16:18:52 -08:00
parport
pci PCI: Do not wait for disconnected devices when resuming 2024-06-27 13:49:05 +02:00
pcmcia
peci
perf perf/arm-dmc620: Fix lockdep assert in ->event_init() 2024-06-12 11:12:46 +02:00
phy phy: qcom: qmp-combo: fix duplicate return in qmp_v4_configure_dp_phy 2024-06-12 11:12:14 +02:00
pinctrl pinctrl: qcom: pinctrl-sm7150: Fix sdc1 and ufs special pins regs 2024-06-12 11:12:24 +02:00
platform platform/x86: p2sb: Don't init until unassigned resources have been assigned 2024-06-27 13:49:03 +02:00
pmdomain pmdomain: ti-sci: Fix duplicate PD referrals 2024-06-21 14:38:44 +02:00
pnp PNP: ACPI: fix fortify warning 2024-02-05 20:14:15 +00:00
power power: supply: cros_usbpd: provide ID table for avoiding fallback match 2024-06-27 13:49:03 +02:00
powercap powercap: intel_rapl_tpmi: Fix System Domain probing 2024-04-03 15:28:19 +02:00
pps
ps3
ptp ptp: Fix error message on failed pin verification 2024-06-21 14:38:18 +02:00
pwm pwm: Rename pwm_apply_state() to pwm_apply_might_sleep() 2024-06-12 11:12:24 +02:00
rapidio
ras
regulator regulator: tps6594-regulator: Correct multi-phase configuration 2024-06-12 11:12:48 +02:00
remoteproc remoteproc: k3-r5: Jump to error handling labels in start/stop errors 2024-06-21 14:38:47 +02:00
reset
rpmsg rpmsg: virtio: Free driver_override when rpmsg_remove() 2024-01-31 16:18:50 -08:00
rtc nvmem: add explicit config option to read old syntax fixed OF cells 2024-05-17 12:01:55 +02:00
s390 s390/ap: Fix crash in AP internal function modify_bitmap() 2024-06-16 13:47:46 +02:00
sbus
scsi scsi: qedi: Fix crash while reading debugfs attribute 2024-06-27 13:49:01 +02:00
sh
siox
slimbus slimbus: qcom-ngd-ctrl: Add timeout for wait operation 2024-05-17 12:02:33 +02:00
soc soc: qcom: rpmh-rsc: Enhance check for VRM in-flight request 2024-06-16 13:47:33 +02:00
soundwire soundwire: cadence: fix invalid PDI offset 2024-06-12 11:12:15 +02:00
spi spi: stm32: Don't warn about spurious interrupts 2024-06-12 11:12:59 +02:00
spmi spmi: hisi-spmi-controller: Do not override device identifier 2024-06-21 14:38:40 +02:00
ssb ssb: Fix potential NULL pointer dereference in ssb_device_uevent() 2024-06-27 13:49:01 +02:00
staging greybus: arche-ctrl: move device table to its right location 2024-06-12 11:12:17 +02:00
target scsi: target: Fix SELinux error when systemd-modules loads the target module 2024-05-17 12:02:15 +02:00
tc
tee tee: optee: Fix kernel panic caused by incorrect error handling 2024-04-03 15:28:44 +02:00
thermal thermal/drivers/qcom/lmh: Check for SCM availability at probe 2024-06-16 13:47:33 +02:00
thunderbolt thunderbolt: debugfs: Fix margin debugfs node creation condition 2024-06-21 14:38:25 +02:00
tty tty: add the option to have a tty reject a new ldisc 2024-06-27 13:49:05 +02:00
ufs scsi: ufs: core: Quiesce request queues before checking pending cmds 2024-06-21 14:38:34 +02:00
uio uio_hv_generic: Don't free decrypted memory 2024-05-17 12:02:17 +02:00
usb usb: gadget: function: Remove usage of the deprecated ida_simple_xx() API 2024-06-27 13:49:04 +02:00
vdpa vdpa/mlx5: Allow CVQ size changes 2024-03-26 18:20:10 -04:00
vfio vfio/pci: Collect hot-reset devices to local buffer 2024-06-27 13:49:05 +02:00
vhost vhost: Add smp_rmb() in vhost_enable_notify() 2024-04-17 11:19:35 +02:00
video fbdev: savage: Handle err return when savagefb_check_var failed 2024-06-16 13:47:37 +02:00
virt drivers/virt/acrn: fix PFNMAP PTE checks in acrn_vm_ram_map() 2024-06-12 11:12:09 +02:00
virtio virtio: delete vq in vp_find_vqs_msix() when request_irq() fails 2024-06-12 11:12:49 +02:00
vlynq
w1 nvmem: add explicit config option to read old syntax fixed OF cells 2024-05-17 12:01:55 +02:00
watchdog watchdog: rti_wdt: Set min_hw_heartbeat_ms to accommodate a safety margin 2024-06-16 13:47:43 +02:00
xen drivers/xen: Improve the late XenStore init protocol 2024-06-12 11:12:51 +02:00
zorro
Kconfig
Makefile