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linux/drivers/acpi
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Rafael J. Wysocki 79d914f5fe ACPI / scan: No implicit wake notification for buttons 
commit bd9b2f9aff upstream.

The ACPI device enumeration code in Linux assumes that buttons always
are wakeup devices, so it calls acpi_setup_gpe_for_wake() for them
which leads to undesirable side effects.  Namely, that function sets
up implicit device wake notification mechanism for a given GPE if
there is no handler method in the ACPI namespace, which from the
ACPICA's perspective means that there always is a way to handle
that GPE if enabled.  However, we don't handle wake notify events
for buttons, so if there are no handler methods for their GPEs in
the namespace, enabling a button GPE at run time leads to a GPE
storm in some cases (the GPE triggers, ACPICA carries out the
implicit wake notification for it which isn't handled, so the
GPE triggers again and so on).

To prevent that from happening use acpi_mark_gpe_for_wake()
instead of acpi_setup_gpe_for_wake() for buttons which will cause
ACPICA to only enable button GPEs if there are handler methods for
the in the namespace.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Joseph Salisbury <joseph.salisbury@canonical.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2015-01-16 14:34:52 +00:00
..
acpica ACPICA: Add new GPE public interface - acpi_mark_gpe_for_wake. 2015-01-16 14:34:51 +00:00
apei ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem. 2014-05-27 18:13:08 +02:00
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 2014-10-05 13:40:59 -07:00
acpi_extlog.c ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem. 2014-05-27 18:13:08 +02:00
acpi_ipmi.c ACPI / IPMI: Cleanup coding styles 2013-09-30 19:46:13 +02:00
acpi_lpss.c ACPI / platform / LPSS: disable async suspend/resume of LPSS devices 2014-10-05 13:41:02 -07:00
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 Merge branch 'acpi-platform' 2014-06-03 23:11:52 +02:00
acpi_pnp.c ACPI / PNP: add soc_button_array device ID to PNP IDs list 2014-07-09 14:31:04 +02:00
acpi_processor.c ACPI / processor: Check if LAPIC is present during initialization 2014-05-16 16:27:35 +02:00
battery.c Revert "ACPI / battery: fix wrong value of capacity_now reported when fully charged" 2014-10-05 13:40:59 -07:00
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: Add dmi_enable_osi_linux quirk for Asus EEE PC 1015PX 2014-05-08 00:35:50 +02:00
bus.c Merge branch 'acpica' 2014-06-03 23:12:27 +02:00
button.c ACPI / button: Add ACPI Button event via netlink routine 2014-03-19 02:06:15 +01:00
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 2014-10-05 13:41:02 -07:00
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: Fix PM initialization for devices that are not present 2015-01-16 14:34:26 +00:00
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. 2014-11-13 11:48:54 +00:00
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 ACPI / fan: do nothing in suspend and poweroff callback 2014-02-20 21:42:09 +01:00
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
internal.h ACPI / scan: always register ACPI LPSS scan handler 2014-05-30 16:04:36 +02:00
Kconfig ACPI / proc: Do not say when /proc interfaces will be deleted in Kconfig 2014-05-10 13:51:36 +02:00
Makefile ACPI / scan: always register ACPI LPSS scan handler 2014-05-30 16:04:36 +02:00
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 ACPI: use kstrto*() instead of simple_strto*() 2014-06-17 14:01:56 +02:00
pci_irq.c ACPI / PCI: Do not call ISA-specific code if ISA is not supported 2014-02-20 21:37:42 +01:00
pci_link.c ACPI: Remove duplicate definitions of PREFIX 2014-03-19 02:01:57 +01:00
pci_root.c Merge branches 'acpi-cleanup', 'acpi-thermal', 'acpi-pci', 'acpi-lpss' and 'acpi-button' 2014-03-20 13:20:47 +01:00
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 Merge branches 'acpi-processor' and 'pnp' 2014-04-01 22:09:50 +02:00
processor_driver.c ACPI / processor: Fix STARTING/DYING action in acpi_cpu_soft_notify() 2014-05-16 16:36:03 +02:00
processor_idle.c ACPI / cpuidle: fix deadlock between cpuidle_lock and cpu_hotplug.lock 2014-09-17 09:22:10 -07:00
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 / battery: move some ACPI_BATTERY_* definitions to header 2014-03-19 01:57:46 +01:00
sbshc.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00
sbshc.h ACPI: SBS: Ignore alarms coming from unknown devices 2007-12-14 15:14:06 -05:00
scan.c ACPI / scan: No implicit wake notification for buttons 2015-01-16 14:34:52 +00:00
sleep.c PM / sleep: trace events for suspend/resume 2014-06-07 00:18:07 +02:00
sleep.h ACPI: Drop power resources driver 2013-01-17 14:11:06 +01:00
sysfs.c ACPI: Remove duplicate definitions of PREFIX 2014-03-19 02:01:57 +01:00
tables.c ACPI: use kstrto*() instead of simple_strto*() 2014-06-17 14:01:56 +02:00
thermal.c Merge back earlier ACPI thermal material. 2014-05-29 13:28:14 +02:00
utils.c ACPI: add dynamic_debug support 2014-05-26 14:38:57 +02:00
video.c ACPI / video: disable native backlight for ThinkPad X201s 2014-10-05 13:41:02 -07:00
video_detect.c ACPI / video: Add Dell Inspiron 5737 to the blacklist 2014-07-07 23:38:10 +02:00
wakeup.c ACPI: Clean up inclusions of ACPI header files 2013-12-07 01:03:14 +01:00