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linux-sg2042/drivers/acpi
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Rafael J. Wysocki 78579b7c7e ACPI / PM: Ignore wakeup setting if the ACPI companion can't wake up 
As reported by Dmitry, on some Chromebooks there are devices with
corresponding ACPI objects and with unusual system wakeup
configuration.  Namely, they technically are wakeup-capable, but the
wakeup is handled via a platform-specific out-of-band mechanism and
the ACPI PM layer has no information on the wakeup capability.  As
a result, device_may_wakeup(dev) called from acpi_dev_suspend_late()
returns 'true' for those devices, but the wakeup.flags.valid flag is
unset for the corresponding ACPI device objects, so acpi_device_wakeup()
reproducibly fails for them causing acpi_dev_suspend_late() to return
an error code.  The entire system suspend is then aborted and the
machines in question cannot suspend at all.

Address the problem by ignoring the device_may_wakeup(dev) return
value in acpi_dev_suspend_late() if the ACPI companion of the device
being handled has wakeup.flags.valid unset (in which case it is clear
that the wakeup is supposed to be handled by other means).

This fixes a regression introduced by commit a76e9bd89a (i2c:
attach/detach I2C client device to the ACPI power domain) as the
affected systems could suspend and resume successfully before that
commit.

Fixes: a76e9bd89a (i2c: attach/detach I2C client device to the ACPI power domain)
Reported-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Cc: 3.13+ <stable@vger.kernel.org> # 3.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 		2014-11-20 01:24:16 +01:00
..
acpica ACPICA: iASL/Disassembler: Add support for hardware summary mapfiles. 2014-10-21 00:39:40 +02:00
apei ACPI and power management updates for 3.17-rc1 2014-08-06 20:34:19 -07:00
Kconfig Thermal: int340x thermal: select ACPI fan driver 2014-10-17 14:30:41 +08:00
Makefile ACPI: introduce ACPI int340x thermal scan handler 2014-09-11 23:35:15 +08:00
ac.c Revert "ACPI / AC: Remove AC's proc directory." 2014-07-07 01:13:46 +02:00
acpi_cmos_rtc.c ACPI / RTC: Fix CMOS RTC opregion handler accesses to wrong addresses 2014-09-08 15:38:41 +02:00
acpi_extlog.c ACPI and power management updates for 3.17-rc1 2014-08-06 20:34:19 -07:00
acpi_ipmi.c ACPI / IPMI: Cleanup coding styles 2013-09-30 19:46:13 +02:00
acpi_lpss.c Merge back earlier 'acpi-lpss' material for v3.18. 2014-09-29 15:29:18 +02:00
acpi_memhotplug.c ACPI / scan: always register memory hotplug scan handler 2014-05-30 16:04:36 +02:00
acpi_pad.c ACPI / PAD: Use time_before() for time comparison 2014-05-27 01:38:23 +02:00
acpi_platform.c ACPI and power management updates for 3.18-rc2 2014-10-24 11:29:31 -07:00
acpi_pnp.c ACPI and power management updates for 3.18-rc1 2014-10-09 16:07:43 -04:00
acpi_processor.c ACPI: Don't use acpi_lapic in ACPI core code 2014-07-21 13:50:58 +02:00
battery.c ACPI / battery: Replace strnicmp with strncasecmp 2014-09-24 23:26:32 +02:00
battery.h ACPI / battery: move some ACPI_BATTERY_* definitions to header 2014-03-19 01:57:46 +01:00
bgrt.c acpi: bgrt: fix build error due to attribute change 2013-08-22 08:34:39 -07:00
blacklist.c ACPI / blacklist: blacklist Win8 OSI for Dell Vostro 3546 2014-10-30 01:32:43 +01:00
bus.c ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug() 2014-09-15 13:15:34 -06:00
button.c ACPI / button: Do not propagate wakeup-from-suspend events 2014-07-23 00:59:04 +02:00
cm_sbs.c ACPI: Revert "ACPI: Remove CONFIG_ACPI_PROCFS_POWER and cm_sbsc.c" 2014-05-06 01:52:09 +02:00
container.c ACPI / hotplug: Generate online uevents for ACPI containers 2014-09-21 02:58:18 +02:00
custom_method.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
debugfs.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
device_pm.c ACPI / PM: Ignore wakeup setting if the ACPI companion can't wake up 2014-11-20 01:24:16 +01:00
dock.c ACPI / dock: Drop dock_device_ids[] table 2014-04-07 14:11:35 +02:00
ec.c ACPI / EC: Fix regression due to conflicting firmware behavior between Samsung and Acer. 2014-10-29 16:52:35 +01:00
ec_sys.c ACPI / EC: Mark the function acpi_ec_add_debugfs() as static in ec_sys.c 2014-01-06 00:13:22 +01:00
event.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
fan.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-10-24 11:21:43 -07:00
glue.c ACPI / scan: Add bind/unbind callbacks to struct acpi_scan_handler 2014-02-11 00:35:46 +01:00
hed.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
int340x_thermal.c Thermal: introduce int3400 thermal driver 2014-10-10 13:57:09 +08:00
internal.h ACPI / fan: use acpi_device_xxx_power instead of acpi_bus equivelant 2014-10-10 13:57:12 +08:00
numa.c ACPI / numa: Use __weak, not the gcc-specific version 2014-02-03 10:39:43 -07:00
nvs.c ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem. 2014-05-27 18:13:08 +02:00
osl.c Merge branch 'acpi-pm' 2014-10-07 01:17:50 +02:00
pci_irq.c x86, irq, PCI: Keep IRQ assignment for runtime power management 2014-08-29 13:38:00 +02:00
pci_link.c ACPI: Remove duplicate definitions of PREFIX 2014-03-19 02:01:57 +01:00
pci_root.c ACPI: Support _OSI("Darwin") correctly 2014-09-24 23:31:12 +02:00
pci_slot.c ACPI / PCI: Include appropriate header file in pci_slot.c 2014-01-06 00:13:22 +01:00
power.c ACPI: Remove duplicate definitions of PREFIX 2014-03-19 02:01:57 +01:00
proc.c ACPI / proc: remove unneeded NULL check 2014-02-05 01:06:21 +01:00
processor_core.c ACPI / processor: use container_of instead of casting first structure member 2014-09-24 23:13:02 +02:00
processor_driver.c ACPI / processor: Make acpi_cpu_soft_notify() process CPU FROZEN events 2014-08-06 22:22:03 +02:00
processor_idle.c ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock 2014-09-03 23:05:55 +02:00
processor_pdc.c ACPI / processor: Introduce ARCH_MIGHT_HAVE_ACPI_PDC 2014-07-21 13:50:58 +02:00
processor_perflib.c ACPI / processor: use acpi_evaluate_ost() to replace open-coded version 2014-02-21 00:27:47 +01:00
processor_thermal.c ACPI: correct minor typos 2013-12-07 01:38:45 +01:00
processor_throttling.c ACPI / processor: Rework processor throttling with work_on_cpu() 2014-02-27 00:21:05 +01:00
reboot.c Revert "ACPI: ignore FADT reset-reg-sup flag" 2012-04-20 11:19:35 -07:00
resource.c ACPI / resources: only reject zero length resources based at address zero 2014-07-07 22:11:09 +02:00
sbs.c ACPI / SBS: Fix check in acpi_ac_get_present() 2014-09-28 01:27:42 +02:00
sbshc.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
sbshc.h
…
scan.c ACPI: Use ACPI companion to match only the first physical device 2014-10-27 18:41:46 +01:00
sleep.c ACPI / sleep: Rework the handling of ACPI GPE wakeup from suspend-to-idle 2014-09-30 21:06:07 +02:00
sleep.h ACPI: Drop power resources driver 2013-01-17 14:11:06 +01:00
sysfs.c ACPICA: Events: Reduce source code difference for the ACPI_EVENT_FLAG_HANDLE renaming. 2014-10-21 00:39:40 +02:00
tables.c ACPI: use kstrto*() instead of simple_strto*() 2014-06-17 14:01:56 +02:00
thermal.c Thermal: move the KELVIN_TO_MILLICELSIUS macro to thermal.h 2014-10-10 13:57:15 +08:00
utils.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-10-24 11:21:43 -07:00
video.c Merge back 'acpi-video' material for v3.18. 2014-10-03 15:46:02 +02:00
video_detect.c ACPI / video: force vendor backlight on Lenovo Ideapad Z570 2014-09-24 23:09:41 +02:00
wakeup.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00