Rafael J. Wysocki 0671627a5f ACPI: PM: s2idle: Avoid possible race related to the EC GPE ... commit e3728b50cd upstream. It is theoretically possible for the ACPI EC GPE to be set after the s2idle_ops->wake() called from s2idle_loop() has returned and before the subsequent pm_wakeup_pending() check is carried out. If that happens, the resulting wakeup event will cause the system to resume even though it may be a spurious one. To avoid that race, first make the ->wake() callback in struct platform_s2idle_ops return a bool value indicating whether or not to let the system resume and rearrange s2idle_loop() to use that value instad of the direct pm_wakeup_pending() call if ->wake() is present. Next, rework acpi_s2idle_wake() to process EC events and check pm_wakeup_pending() before re-arming the SCI for system wakeup to prevent it from triggering prematurely and add comments to that function to explain the rationale for the new code flow. Fixes: 56b9918490 ("PM: sleep: Simplify suspend-to-idle control flow") Cc: 5.4+ <stable@vger.kernel.org> # 5.4+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-02-19 19:52:56 +01:00
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Kconfig	pci-v5.3-changes	2019-07-15 20:44:49 -07:00
Makefile	PM: Introduce an Energy Model management framework	2018-12-11 15:16:58 +01:00
autosleep.c	PM / wakeup: Show wakeup sources stats in sysfs	2019-08-21 00:20:40 +02:00
console.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
energy_model.c	sched/topology: Remove unused 'sd' parameter from arch_scale_cpu_capacity()	2019-06-24 19:23:39 +02:00
hibernate.c	hibernate: Disable when the kernel is locked down	2019-08-19 21:54:15 -07:00
main.c	PM: sleep: include <linux/pm_runtime.h> for pm_wq	2019-10-10 11:11:56 +02:00
power.h	PM: hibernate: powerpc: Expose pfn_is_nosave() prototype	2019-06-14 10:48:56 +02:00
poweroff.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 248	2019-06-19 17:09:08 +02:00
process.c	PM / sleep: Show freezing tasks that caused a suspend abort	2018-09-10 12:09:10 +02:00
qos.c	PM: QoS: Invalidate frequency QoS requests after removal	2019-11-20 10:46:42 +01:00
snapshot.c	PM: hibernate: fix crashes with init_on_free=1	2020-01-29 16:45:25 +01:00
suspend.c	ACPI: PM: s2idle: Avoid possible race related to the EC GPE	2020-02-19 19:52:56 +01:00
suspend_test.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428	2019-06-05 17:37:16 +02:00
swap.c	kernel: power: swap: use kzalloc() instead of kmalloc() followed by memset()	2019-06-28 10:20:39 +02:00
user.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428	2019-06-05 17:37:16 +02:00
wakelock.c	PM / wakeup: Show wakeup sources stats in sysfs	2019-08-21 00:20:40 +02:00