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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-03-25 11:55:48 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-03-25 12:57:27 +0100 |
| commit | d5406284ff803a578ca503373624312770319054 (patch) | |
| tree | 82bf955cf0a12f1d42f44f1a1026dfd659762e96 /drivers/acpi/internal.h | |
| parent | 0ce792d660bda990c675eaf14ce09594a9b85cbf (diff) | |
| download | lwn-d5406284ff803a578ca503373624312770319054.tar.gz lwn-d5406284ff803a578ca503373624312770319054.zip | |
ACPI: PM: s2idle: Refine active GPEs check
The check for any active GPEs added by commit fdde0ff8590b ("ACPI:
PM: s2idle: Prevent spurious SCIs from waking up the system") turns
out to be insufficiently precise to prevent some systems from
resuming prematurely due to a spurious EC wakeup, so refine it
by first checking if any GPEs other than the EC GPE are active
and skipping all of the SCIs coming from the EC that do not produce
any genuine wakeup events after processing.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206629
Fixes: fdde0ff8590b ("ACPI: PM: s2idle: Prevent spurious SCIs from waking up the system")
Reported-by: Ondřej Caletka <ondrej@caletka.cz>
Tested-by: Ondřej Caletka <ondrej@caletka.cz>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/internal.h')
| -rw-r--r-- | drivers/acpi/internal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 3616daec650b..d44c591c4ee4 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -202,6 +202,7 @@ void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit); #ifdef CONFIG_PM_SLEEP void acpi_ec_flush_work(void); +bool acpi_ec_other_gpes_active(void); bool acpi_ec_dispatch_gpe(void); #endif |