diff options
| author | Lv Zheng <lv.zheng@intel.com> | 2014-12-15 01:47:52 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-12-15 15:10:23 +0100 |
| commit | 1741acea75ea51ce709304a26baf72e1e99b8f3a (patch) | |
| tree | 5edcf0bba4b240a152fbeb87057324f8dbaeabca /drivers/acpi/ec.c | |
| parent | Linux 3.18 (diff) | |
| download | linux-1741acea75ea51ce709304a26baf72e1e99b8f3a.tar.xz linux-1741acea75ea51ce709304a26baf72e1e99b8f3a.zip | |
ACPI / EC: Fix unexpected ec_remove_handlers() invocations
The ec_remove_handlers() is invoked without checking
EC_FLAGS_HANDLERS_INSTALLED, this patch enhances this check to avoid issues
that acpi_disable_gpe() is invoked unexpectedly to reduce the GPE runtime
count. This may happen when the EC handler installation failed on some
platforms.
Reported-by: Venkat Raghavulu <venkat.raghavulu@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/ec.c')
| -rw-r--r-- | drivers/acpi/ec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 5f9b74b9b71f..1b5853f384e2 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -844,6 +844,8 @@ static int ec_install_handlers(struct acpi_ec *ec) static void ec_remove_handlers(struct acpi_ec *ec) { + if (!test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags)) + return; acpi_disable_gpe(NULL, ec->gpe); if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle, ACPI_ADR_SPACE_EC, &acpi_ec_space_handler))) |