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kernel_samsung_a53x/drivers/acpi
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Nikita Kiryushin bb9c936375 ACPI: video: check for error while searching for backlight device parent 
[ Upstream commit ccd45faf4973746c4f30ea41eec864e5cf191099 ]

If acpi_get_parent() called in acpi_video_dev_register_backlight()
fails, for example, because acpi_ut_acquire_mutex() fails inside
acpi_get_parent), this can lead to incorrect (uninitialized)
acpi_parent handle being passed to acpi_get_pci_dev() for detecting
the parent pci device.

Check acpi_get_parent() result and set parent device only in case of success.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 9661e92c10a9 ("acpi: tie ACPI backlight devices to PCI devices if possible")
Signed-off-by: Nikita Kiryushin <kiryushin@ancud.ru>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-18 12:12:20 +01:00
..
acpica Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
apei Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
arm64 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dptf Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfit Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
numa Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pmic Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
x86 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ac.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_adxl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_amba.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_apd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_cmos_rtc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_configfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_dbg.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_extlog.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_ipmi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_lpat.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_lpit.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_lpss.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_memhotplug.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_pad.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_platform.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_pnp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_processor.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_tad.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acpi_video.c ACPI: video: check for error while searching for backlight device parent 2024-11-18 12:12:20 +01:00
acpi_watchdog.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
battery.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bgrt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blacklist.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bus.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
button.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
container.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cppc_acpi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
custom_method.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
debugfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
device_pm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
device_sysfs.c ACPI: sysfs: Fix create_pnp_modalias() and create_of_modalias() 2024-11-18 11:42:50 +01:00
dock.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ec.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ec_sys.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
event.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
evged.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fan.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fan.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
glue.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hed.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ioapic.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
irq.c ACPI: irq: Fix incorrect return value in acpi_register_gsi() 2024-11-08 11:26:19 +01:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nvs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
osi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
osl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_irq.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_link.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_mcfg.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_root.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pci_slot.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
power.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pptt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
proc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_core.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_driver.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_idle.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_pdc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_perflib.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_thermal.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
processor_throttling.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
property.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
reboot.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
resource.c ACPI: resource: Add another DMI match for the TongFang GMxXGxx 2024-11-18 12:12:18 +01:00
sbs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sbshc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sbshc.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
scan.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sleep.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sleep.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
spcr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sysfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tables.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
thermal.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
tiny-power-button.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
utils.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
video_detect.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
wakeup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00