mirror of
https://github.com/torvalds/linux.git
synced 2024-12-03 01:21:28 +00:00
e3728b50cd
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:
|
||
|---|---|---|
| .. | ||
| autosleep.c | ||
| console.c | ||
| energy_model.c | ||
| hibernate.c | ||
| Kconfig | ||
| main.c | ||
| Makefile | ||
| power.h | ||
| poweroff.c | ||
| process.c | ||
| qos.c | ||
| snapshot.c | ||
| suspend_test.c | ||
| suspend.c | ||
| swap.c | ||
| user.c | ||
| wakelock.c | ||