diff options
| author | Erik Schmauss <erik.schmauss@intel.com> | 2018-03-15 02:12:59 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-03-18 20:52:00 +0300 |
| commit | 87cd826b5979d91d4f2ba189e0652820f2da417f (patch) | |
| tree | bf6d9d3f5edf4eb692af63289b2fbf6724465f8e /drivers/acpi/acpica/evxface.c | |
| parent | 8d5934952f26c25431dbc21aa8ae7614bb8f88c3 (diff) | |
| download | linux-87cd826b5979d91d4f2ba189e0652820f2da417f.tar.xz | |
ACPICA: Events: Dispatch GPEs after enabling for the first time
After being enabled for the first time, the GPEs may have STS bits already
set. Setting EN bits is not sufficient to trigger the GPEs again, so this
patch polls GPEs after enabling them for the first time.
This is a cleaner version on top of the "GPE clear" fix generated according
to Mika's report and Rafael's original Linux based fix. Based on Linux
commit originated from Rafael J. Wysocki, fixed by Lv Zheng.
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/evxface.c')
| -rw-r--r-- | drivers/acpi/acpica/evxface.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c index 9b3c01bf1438..b6e462f33b0d 100644 --- a/drivers/acpi/acpica/evxface.c +++ b/drivers/acpi/acpica/evxface.c @@ -1006,6 +1006,15 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, (ACPI_GPE_DISPATCH_TYPE(handler->original_flags) == ACPI_GPE_DISPATCH_NOTIFY)) && handler->originally_enabled) { (void)acpi_ev_add_gpe_reference(gpe_event_info); + if (ACPI_GPE_IS_POLLING_NEEDED(gpe_event_info)) { + + /* Poll edge triggered GPEs to handle existing events */ + + acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + (void)acpi_ev_detect_gpe(gpe_device, gpe_event_info, + gpe_number); + flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + } } acpi_os_release_lock(acpi_gbl_gpe_lock, flags); |