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c7d9ca90aa
kernel-ark/drivers/acpi
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Jeff Wu c7d9ca90aa ACPI: add _STA evaluation at do_acpi_find_child() 
Once do_acpi_find_child() has found the first matching handle, it
makes the acpi_get_child() loop stop and return that handle.  On some
platforms, though, there are multiple devices with the same value of
"_ADR" in the same namespace scope, and if one of them is enabled,
the others will be disabled.  For example:

 Address : 0x1FFFF ; path : SB_PCI0.SATA.DEV0
 Address : 0x1FFFF ; path : SB_PCI0.SATA.DEV1
 Address : 0x1FFFF ; path : SB_PCI0.SATA.DEV2

If DEV0 and DEV1 are disabled and DEV2 is enabled, the handle of DEV2
should be returned, but actually the function always returns the
handle of DEV0.

To address that issue, make do_acpi_find_child() evaluate _STA to
check the device status.  If a matching device object exists, but is
disabled, acpi_get_child() will continue to walk the namespace in the
hope of finding an enabled one.  If one is found, its handle will be
returned, but otherwise the function will return the handle of the
disabled object found before (in case it is enabled going forward).

[rjw: Changelog]
Signed-off-by: Jeff Wu <zlinuxkernel@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-06-19 23:34:58 +02:00
..
acpica ACPICA: ACPICA: Fix for _INI regression 2013-05-08 15:31:53 +02:00
apei Merge branch 'acpi-fixes' 2013-06-07 12:35:23 +02:00
ac.c ACPI / AC: Add sleep quirk for Thinkpad e530 2013-05-12 14:03:15 +02:00
acpi_i2c.c ACPI / I2C: Use parent's ACPI_HANDLE() in acpi_i2c_register_devices() 2013-04-02 15:30:41 +02:00
acpi_ipmi.c IPMI/ACPI: Add the IPMI opregion driver to enable ACPI to access BMC controller 2010-12-14 00:22:14 -05:00
acpi_lpss.c ACPI / LPSS: register clock device for Lynxpoint DMA properly 2013-05-14 10:23:58 +05:30
acpi_memhotplug.c ACPI / memhotplug: Remove info->failed bit 2013-03-25 00:36:25 +01:00
acpi_pad.c ACPI / acpi_pad: Used PTR_RET 2013-03-25 00:13:15 +01:00
acpi_platform.c ACPI / scan: Add special handler for Intel Lynxpoint LPSS devices 2013-03-21 22:44:38 +01:00
battery.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
bgrt.c efi: Fix the ACPI BGRT driver for images located in EFI boot services memory 2012-09-29 12:21:03 -07:00
blacklist.c acpi: delete module.h include from files explicitly not needing it 2011-10-31 19:30:33 -04:00
bus.c ACPI: replace kmalloc+memcpy with kmemdup 2013-03-24 23:31:33 +01:00
button.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
cm_sbs.c
container.c Merge branch 'acpi-assorted' 2013-04-28 01:54:08 +02:00
custom_method.c The sweeping change is to make add_taint() explicitly indicate whether to disable 2013-02-25 15:41:43 -08:00
debugfs.c acpi: add export.h to files using THIS_MODULE/EXPORT_SYMBOL 2011-10-31 19:30:34 -04:00
device_pm.c ACPI / PM: Do not execute _PS0 for devices without _PSC during initialization 2013-06-07 12:33:57 +02:00
dock.c ACPI / hotplug: Fix concurrency issues and memory leaks 2013-02-13 14:36:47 +01:00
ec_sys.c ACPI / EC: access user space with get_user()/put_user() 2013-06-19 23:29:20 +02:00
ec.c ACPI / EC: Restart transaction even when the IBF flag set 2013-05-12 14:03:15 +02:00
event.c acpi: add export.h to files using THIS_MODULE/EXPORT_SYMBOL 2011-10-31 19:30:34 -04:00
fan.c ACPI / fan: avoid null pointer deference error 2013-03-25 23:01:00 +01:00
glue.c ACPI: add _STA evaluation at do_acpi_find_child() 2013-06-19 23:34:58 +02:00
hed.c ACPI: Remove useless type argument of driver .remove() operation 2013-01-26 00:37:24 +01:00
internal.h dma: acpi-dma: parse CSRT to extract additional resources 2013-05-14 10:23:57 +05:30
Kconfig Merge branch 'acpi-assorted' 2013-04-28 01:54:08 +02:00
Makefile Power management and ACPI fixes for 3.10-rc3 2013-05-25 20:32:00 -07:00
numa.c x86, ACPI, mm: Revert movablemem_map support 2013-03-02 09:34:39 -08:00
nvs.c ACPI / PM: print physical addresses consistently with other parts of kernel 2012-03-30 02:46:57 -04:00
osl.c ACPI: Fix wrong parameter passed to memblock_reserve 2013-04-24 13:50:17 +02:00
pci_irq.c PCI/ACPI: Don't cache _PRT, and don't associate them with bus numbers 2013-02-16 11:58:34 -07:00
pci_link.c ACPI: Set length even for TYPE_END_TAG acpi resource 2013-03-24 01:00:38 +01:00
pci_root.c PCI: acpiphp: Re-enumerate devices when host bridge receives Bus Check 2013-05-17 14:12:06 -06:00
pci_slot.c PCI/ACPI: Handle PCI slot devices when creating/destroying PCI buses 2013-04-12 15:38:25 -06:00
power.c Merge branch 'acpi-pm' 2013-04-28 01:54:00 +02:00
proc.c procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
processor_core.c ACPI / processor: Remove redundant NULL check before kfree 2013-03-04 14:23:39 +01:00
processor_driver.c ACPI / PM: Move processor suspend/resume to syscore_ops 2013-05-12 14:03:14 +02:00
processor_idle.c ACPI / PM: Move processor suspend/resume to syscore_ops 2013-05-12 14:03:14 +02:00
processor_perflib.c acpi: Export the acpi_processor_get_performance_info 2013-03-06 10:00:34 -05:00
processor_thermal.c ACPI / processor_thermal: avoid null pointer deference error 2013-03-25 23:01:01 +01:00
processor_throttling.c ACPI: suppress compiler warnings in processor_throttling.c 2013-03-25 00:05:48 +01:00
reboot.c Revert "ACPI: ignore FADT reset-reg-sup flag" 2012-04-20 11:19:35 -07:00
resource.c ACPI: remove unnecessary INIT_LIST_HEAD 2012-11-27 13:49:36 +01:00
sbs.c proc: Supply a function to remove a proc entry by PDE 2013-05-01 17:29:46 -04:00
sbshc.c ACPI: Remove useless type argument of driver .remove() operation 2013-01-26 00:37:24 +01:00
sbshc.h
scan.c ACPI / video: Do not bind to device objects with a scan handler 2013-06-10 13:00:29 +02:00
sleep.c ACPI / PM: fix suspend and resume on Sony Vaio VGN-FW21M 2013-03-27 00:04:53 +01:00
sleep.h ACPI: Drop power resources driver 2013-01-17 14:11:06 +01:00
sysfs.c ACPI / hotplug: Make acpi_hotplug_profile_ktype static 2013-03-19 00:16:15 +01:00
tables.c ACPICA: Cleanup table handler naming conflicts. 2013-01-11 13:10:16 +01:00
thermal.c ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points 2013-04-26 13:34:40 +02:00
utils.c ACPI: Add acpi_handle_<level>() interfaces 2012-11-21 23:20:22 +01:00
video_detect.c ACPI / video: Add "Asus UL30A" to ACPI video detect blacklist 2013-05-23 01:41:45 +02:00
video.c ACPI / video: Do not bind to device objects with a scan handler 2013-06-10 13:00:29 +02:00
wakeup.c ACPI / Wakeup: Enable button GPEs unconditionally during initialization 2011-02-12 01:39:53 +01:00