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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2020-02-21 01:46:18 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2020-02-21 10:01:25 -0800
commit63fb9623427fbb44e3782233b6e4714057b76ff2 (patch)
tree6659a2f1e164368abeb538c677e1f63634fc7c54 /drivers/acpi/sleep.c
parentebe7acadf5a9c4b67475e766e0e80ae6a2a79c61 (diff)
downloadlinux-63fb9623427fbb44e3782233b6e4714057b76ff2.tar.bz2
ACPI: PM: s2idle: Check fixed wakeup events in acpi_s2idle_wake()
Commit fdde0ff8590b ("ACPI: PM: s2idle: Prevent spurious SCIs from waking up the system") overlooked the fact that fixed events can wake up the system too and broke RTC wakeup from suspend-to-idle as a result. Fix this issue by checking the fixed events in acpi_s2idle_wake() in addition to checking wakeup GPEs and break out of the suspend-to-idle loop if the status bits of any enabled fixed events are set then. Fixes: fdde0ff8590b ("ACPI: PM: s2idle: Prevent spurious SCIs from waking up the system") Reported-and-tested-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: 5.4+ <stable@vger.kernel.org> # 5.4+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi/sleep.c')
-rw-r--r--drivers/acpi/sleep.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 152f7fc0b200..e5f95922bc21 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -1006,6 +1006,13 @@ static bool acpi_s2idle_wake(void)
return true;
/*
+ * If the status bit of any enabled fixed event is set, the
+ * wakeup is regarded as valid.
+ */
+ if (acpi_any_fixed_event_status_set())
+ return true;
+
+ /*
* If there are no EC events to process and at least one of the
* other enabled GPEs is active, the wakeup is regarded as a
* genuine one.