Hans de Goede a826af1dea ACPI: scan: Make acpi_bus_get_device() clear return pointer on error ... commit 78a18fec52 upstream. Set the acpi_device pointer which acpi_bus_get_device() returns-by- reference to NULL on errors. We've recently had 2 cases where callers of acpi_bus_get_device() did not properly error check the return value, so set the returned- by-reference acpi_device pointer to NULL, because at least some callers of acpi_bus_get_device() expect that to be done on errors. [ rjw: This issue was exposed by commit 71da201f38 ("ACPI: scan: Defer enumeration of devices with _DEP lists") which caused it to be much more likely to occur on some systems, but the real defect had been introduced by an earlier commit. ] Fixes: 40e7fcb192 ("ACPI: Add _DEP support to fix battery issue on Asus T100TA") Fixes: bcfcd409d4 ("usb: split code locating ACPI companion into port and device") Reported-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Diagnosed-by: Rafael J. Wysocki <rafael@kernel.org> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Cc: All applicable <stable@vger.kernel.org> [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-01-27 11:47:40 +01:00
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acpica	ACPICA: Do not increment operation_region reference counts for field units	2020-08-19 08:16:05 +02:00
apei	x86/mm: split vmalloc_sync_all()	2020-03-25 08:25:58 +01:00
arm64	ACPI/IORT: Fix PMCG node single ID mapping handling	2020-06-22 09:30:54 +02:00
dptf	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
hmat	ACPI: HMAT: Fix handling of changes from ACPI 6.2 to ACPI 6.3	2020-11-05 11:43:19 +01:00
nfit	ACPI: NFIT: Fix comparison to '-ENXIO'	2020-11-10 12:37:31 +01:00
pmic	ACPI / PMIC: intel: Drop double removal of address space handler	2019-07-03 13:03:41 +02:00
x86	x86/intel: Aggregate big core mobile naming	2019-08-28 11:29:31 +02:00
Kconfig	ia64: remove support for machvecs	2019-08-16 14:32:26 -07:00
Makefile	ACPI: Always build evged in	2020-10-17 10:11:22 +02:00
ac.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
acpi_adxl.c	ACPI/ADXL: Add address translation interface using an ACPI DSM	2018-10-16 10:03:00 +02:00
acpi_amba.c	Merge 5.2-rc6 into char-misc-next	2019-06-23 09:23:33 +02:00
acpi_apd.c	i2c: imx: ACPI support for NXP i2c controller	2019-09-13 15:12:38 +01:00
acpi_cmos_rtc.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
acpi_configfs.c	ACPI: configfs: Disallow loading ACPI tables when locked down	2020-06-30 15:37:07 -04:00
acpi_dbg.c	ACPI: debug: don't allow debugging when ACPI is disabled	2020-11-05 11:43:25 +01:00
acpi_extlog.c	ACPI / extlog: Check for RDMSR failure	2020-11-05 11:43:24 +01:00
acpi_ipmi.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
acpi_lpat.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
acpi_lpit.c	Merge branches 'acpi-pm' and 'pm-pci'	2019-07-08 10:49:36 +02:00
acpi_lpss.c	ACPI: LPSS: Add dmi quirk for skipping _DEP check for some device-links	2019-12-17 19:56:32 +01:00
acpi_memhotplug.c	mm/memory_hotplug: rename walk_memory_range() and pass start+size instead of pfns	2019-07-18 17:08:06 -07:00
acpi_pad.c	ACPI, x86: Add Zhaoxin processors support for NONSTOP TSC	2019-06-22 11:45:57 +02:00
acpi_platform.c	ACPI: platform: Unregister stale platform devices	2020-01-26 10:01:04 +01:00
acpi_pnp.c	ACPI: PNP: compare the string length in the matching_id()	2020-12-30 11:51:32 +01:00
acpi_processor.c	ACPI / processor: don't print errors for processorIDs == 0xff	2019-08-09 10:48:34 +02:00
acpi_tad.c	ACPI: TAD: Add low-level support for real time capability	2018-10-18 09:11:53 +02:00
acpi_video.c	ACPI: video: Add new hw_changes_brightness quirk, set it on PB Easynote MZ35	2019-07-16 17:30:09 +02:00
acpi_watchdog.c	ACPI: watchdog: Allow disabling WDAT at boot	2020-03-21 08:11:47 +01:00
battery.c	ACPI / battery: Deal better with neither design nor full capacity not being reported	2020-02-11 04:35:20 -08:00
bgrt.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
blacklist.c	ACPI: blacklist: fix clang warning for unused DMI table	2019-07-11 22:45:00 +02:00
bus.c	ACPI: bus: Fix NULL pointer check in acpi_bus_get_private_data()	2019-12-17 19:56:34 +01:00
button.c	ACPI: button: Add DMI quirk for Medion Akoya E2228T	2020-11-24 13:29:00 +01:00
cm_sbs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
container.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
cppc_acpi.c	ACPI: CPPC: Fix reference count leak in acpi_cppc_processor_probe()	2020-06-17 16:40:28 +02:00
custom_method.c	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
debugfs.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
device_pm.c	PM: ACPI: PCI: Drop acpi_pm_set_bridge_wakeup()	2020-12-30 11:51:32 +01:00
device_sysfs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
dock.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
ec.c	ACPI: EC: PM: Drop ec_no_wakeup check from acpi_ec_dispatch_gpe()	2020-11-05 11:43:25 +01:00
ec_sys.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482	2019-06-19 17:09:52 +02:00
event.c	ACPI: event: replace strcpy() by strscpy()	2019-04-23 10:54:26 +02:00
evged.c	ACPI: GED: fix -Wformat	2020-11-22 10:14:12 +01:00
fan.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
glue.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428	2019-06-05 17:37:16 +02:00
hed.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174	2019-05-30 11:26:41 -07:00
internal.h	ACPI: scan: Harden acpi_device_add() against device ID overflows	2021-01-19 18:26:12 +01:00
ioapic.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
irq.c	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-07-08 11:01:13 -07:00
numa.c	ACPI: Add out of bounds and numa_off protections to pxm_to_node()	2020-11-05 11:43:18 +01:00
nvs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428	2019-06-05 17:37:16 +02:00
osi.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
osl.c	ACPI: OSL: only free map once in osl.c	2019-12-17 19:56:33 +01:00
pci_irq.c	ACPI / PCI: fix acpi_pci_irq_enable() memory leak	2019-09-03 09:41:25 +02:00
pci_link.c	ACPI/PCI: Remove surplus parentheses from a return statement	2019-08-21 00:05:20 +02:00
pci_mcfg.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 459	2019-06-19 17:09:09 +02:00
pci_root.c	PCI: Move ASPM declarations to linux/pci.h	2019-08-28 08:28:39 -05:00
pci_slot.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 491	2019-06-19 17:09:52 +02:00
power.c	ACPI / PM: Introduce concept of a _PR0 dependent device	2019-06-27 12:31:57 +02:00
pptt.c	ACPI/PPTT: Add support for ACPI 6.3 thread flag	2019-08-12 12:59:15 +01:00
proc.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
processor_core.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
processor_driver.c	cpufreq: Use per-policy frequency QoS	2019-10-21 02:05:21 +02:00
processor_idle.c	ACPI, x86: Add Zhaoxin processors support for NONSTOP TSC	2019-06-22 11:45:57 +02:00
processor_pdc.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
processor_perflib.c	ACPI: processor: Add QoS requests for all CPUs	2019-10-25 11:33:48 +02:00
processor_thermal.c	ACPI: processor: Add QoS requests for all CPUs	2019-10-25 11:33:48 +02:00
processor_throttling.c	x86: ACPI: fix CPU hotplug deadlock	2020-04-23 10:36:38 +02:00
property.c	Char/Misc driver patches for 5.4-rc1	2019-09-18 11:14:31 -07:00
reboot.c	ACPI: Allow CONFIG_PCI to be unset for reboot	2018-12-20 10:19:49 +01:00
resource.c	Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"	2020-12-30 11:51:32 +01:00
sbs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157	2019-05-30 11:26:37 -07:00
sbshc.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372	2019-06-05 17:37:10 +02:00
sbshc.h	ACPI: SBS: remove unused const variable 'SMBUS_PEC'	2019-08-23 12:55:09 +02:00
scan.c	ACPI: scan: Make acpi_bus_get_device() clear return pointer on error	2021-01-27 11:47:40 +01:00
sleep.c	ACPI: EC: PM: Avoid flushing EC work when EC GPE is inactive	2020-05-27 17:46:10 +02:00
sleep.h	ACPI: PM: Add acpi_[un]register_wakeup_handler()	2020-04-13 10:48:08 +02:00
spcr.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
sysfs.c	ACPI: sysfs: Fix pm_profile_attr type	2020-06-30 15:37:06 -04:00
tables.c	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
thermal.c	ACPI: thermal: Remove redundant acpi_has_method() calls	2019-09-02 22:52:50 +02:00
utils.c	bus_find_device: Unify the match callback with class_find_device	2019-06-24 05:22:31 +02:00
video_detect.c	ACPI: video: use ACPI backlight for HP 635 Notebook	2020-11-05 11:43:25 +01:00
wakeup.c	ACPI: PM: Add acpi_[un]register_wakeup_handler()	2020-04-13 10:48:08 +02:00