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linux/drivers/acpi
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Rafael J. Wysocki f4a42f8492 ACPI / scan: Prefer devices without _HID/_CID for _ADR matching 
[ Upstream commit c2a6bbaf0c ]

The way acpi_find_child_device() works currently is that, if there
are two (or more) devices with the same _ADR value in the same
namespace scope (which is not specifically allowed by the spec and
the OS behavior in that case is not defined), the first one of them
found to be present (with the help of _STA) will be returned.

This covers the majority of cases, but is not sufficient if some of
the devices in question have a _HID (or _CID) returning some valid
ACPI/PNP device IDs (which is disallowed by the spec) and the
ASL writers' expectation appears to be that the OS will match
devices without a valid ACPI/PNP device ID against a given bus
address first.

To cover this special case as well, modify find_child_checks()
to prefer devices without ACPI/PNP device IDs over devices that
have them.

Suggested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-06 19:19:45 -07:00
..
acpica ACPICA: acpi_get_sleep_type_data: Reduce warnings 2016-10-07 15:23:48 +02:00
apei ACPI / APEI: Fix NMI notification handling 2017-01-19 20:17:22 +01:00
pmic
ac.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
acpi_apd.c ACPI: Remove clk.h include 2015-07-20 10:52:45 -07:00
acpi_cmos_rtc.c
acpi_extlog.c
acpi_ipmi.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
acpi_lpat.c
acpi_lpss.c PM / PCI / ACPI: Kick devices that might have been reset by firmware 2015-10-14 02:17:34 +02:00
acpi_memhotplug.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
acpi_pad.c ACPI / PAD: power_saving_thread() is not freezable 2015-10-26 04:42:54 +01:00
acpi_platform.c ACPI: Do not create a platform_device for IOAPIC/IOxAPIC 2017-04-08 09:53:31 +02:00
acpi_pnp.c ACPI / scan: constify first argument of struct acpi_scan_handler::match 2015-09-15 02:56:29 +02:00
acpi_processor.c ACPI / processor: Request native thermal interrupt handling via _OSC 2016-05-11 11:21:26 +02:00
acpi_video.c ACPI / video: skip evaluating _DOD when it does not exist 2017-03-26 12:13:17 +02:00
battery.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
battery.h
bgrt.c
blacklist.c ACPI / blacklist: Make Dell Latitude 3350 ethernet work 2017-03-30 09:35:20 +02:00
bus.c ACPI / processor: Request native thermal interrupt handling via _OSC 2016-05-11 11:21:26 +02:00
button.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
cm_sbs.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
container.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
cppc_acpi.c ACPI / CPPC: Prevent cpc_desc_ptr points to the invalid data 2016-09-07 08:32:38 +02:00
custom_method.c
debugfs.c ACPI: fix acpi_debugfs_init prototype 2015-08-07 02:55:18 +02:00
device_pm.c PM / PCI / ACPI: Kick devices that might have been reset by firmware 2015-10-14 02:17:34 +02:00
device_sysfs.c ACPI / property: avoid leaking format string into kobject name 2016-01-08 01:01:41 +01:00
dock.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
ec_sys.c ACPI / EC: Fix broken 64bit big-endian users of 'global_lock' 2015-10-04 11:36:07 +01:00
ec.c ACPI / EC: Work around method reentrancy limit in ACPICA for _Qxx 2016-08-20 18:09:27 +02:00
event.c
fan.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
glue.c ACPI / scan: Prefer devices without _HID/_CID for _ADR matching 2017-08-06 19:19:45 -07:00
gsi.c acpi/gsi: Cleanup acpi_register_gsi 2015-10-13 19:01:25 +02:00
hed.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
int340x_thermal.c ACPI: Eliminate CONFIG_.*{, _MODULE} #ifdef in favor of IS_ENABLED() 2015-09-15 03:05:45 +02:00
internal.h ACPI / processor: Request native thermal interrupt handling via _OSC 2016-05-11 11:21:26 +02:00
ioapic.c
Kconfig Merge branches 'acpica', 'acpi-video' and 'device-properties' 2015-12-04 14:01:17 +01:00
Makefile ACPI: Fix incompatibility with mcount-based function graph tracing 2017-04-08 09:53:31 +02:00
nfit.c acpi, nfit, libnvdimm: fix interleave set cookie calculation (64-bit comparison) 2017-04-21 09:30:05 +02:00
nfit.h acpi, nfit: check for the correct event code in notifications 2016-10-28 03:01:34 -04:00
numa.c ACPI / SRAT: fix SRAT parsing order with both LAPIC and X2APIC present 2016-09-07 08:32:45 +02:00
nvs.c
osl.c ACPI / osi: Fix an issue that acpi_osi=!* cannot disable ACPICA internal strings 2016-06-01 12:15:50 -07:00
pci_irq.c Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()" 2016-04-20 15:42:16 +09:00
pci_link.c ACPI / PCI: Remove duplicated penalty on SCI IRQ 2015-09-26 01:53:07 +02:00
pci_root.c x86/PCI/ACPI: Fix regression caused by commit 4d6b4e69a2 2015-12-02 02:30:15 +01:00
pci_slot.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
power.c ACPI / power: Avoid maybe-uninitialized warning 2017-04-27 09:09:33 +02:00
proc.c ACPI: change acpi_sleep_proc_init() to return void 2015-09-15 03:03:15 +02:00
processor_core.c
processor_driver.c ACPI / processor: Fix thermal cooling device regression 2015-12-21 03:41:49 +01:00
processor_idle.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
processor_pdc.c
processor_perflib.c Merge branch 'pm-cpufreq' 2015-09-01 15:52:35 +02:00
processor_thermal.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
processor_throttling.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
property.c ACPI / property: Fix subnode lookup scope for data-only subnodes 2015-10-22 00:54:03 +02:00
reboot.c
resource.c PCI: ACPI: IA64: fix IO port generic range check 2016-04-12 09:08:37 -07:00
sbs.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
sbshc.c Revert "ACPI / SBS: Add 5 us delay to fix SBS hangs on MacBook" 2015-11-16 23:26:45 +01:00
sbshc.h
scan.c ACPI / drivers: replace acpi_probe_lock spinlock with mutex 2016-09-07 08:32:45 +02:00
sleep.c ACPI / PM: Runtime resume devices when waking from hibernate 2016-04-12 09:09:03 -07:00
sleep.h
sysfs.c ACPI / sysfs: fix error code in get_status() 2016-09-07 08:32:45 +02:00
tables.c ACPI / tables: test the correct variable 2015-10-15 01:31:24 +02:00
thermal.c linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUS 2015-10-10 11:32:30 +08:00
utils.c ACPI: Remove FSF mailing addresses 2015-07-08 02:27:32 +02:00
video_detect.c ACPI / video: Add force_native quirk for HP Pavilion dv6 2017-01-09 08:07:44 +01:00
wakeup.c