diff options
| author | Jiang Liu <jiang.liu@huawei.com> | 2013-06-29 00:24:38 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-07-15 01:33:10 +0200 |
| commit | 952c63e9512b63220886105cfc791507046fa39a (patch) | |
| tree | bf3bd0592ea0fac74418fe16b8a4125e2db799ea /drivers/acpi/battery.c | |
| parent | 472d963befe28b8614ea2789757b27536c8d79eb (diff) | |
| download | linux-952c63e9512b63220886105cfc791507046fa39a.tar.bz2 | |
ACPI: introduce helper function acpi_has_method()
Introduce helper function acpi_has_method() and use it in a number
of places to simplify code.
[rjw: Changelog]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/battery.c')
| -rw-r--r-- | drivers/acpi/battery.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 082b4dd252a8..a7627166e18b 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -548,12 +548,8 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery) static int acpi_battery_init_alarm(struct acpi_battery *battery) { - acpi_status status = AE_OK; - acpi_handle handle = NULL; - /* See if alarms are supported, and if so, set default */ - status = acpi_get_handle(battery->device->handle, "_BTP", &handle); - if (ACPI_FAILURE(status)) { + if (!acpi_has_method(battery->device->handle, "_BTP")) { clear_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags); return 0; } @@ -1066,7 +1062,7 @@ static int acpi_battery_add(struct acpi_device *device) { int result = 0; struct acpi_battery *battery = NULL; - acpi_handle handle; + if (!device) return -EINVAL; battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL); @@ -1078,8 +1074,7 @@ static int acpi_battery_add(struct acpi_device *device) device->driver_data = battery; mutex_init(&battery->lock); mutex_init(&battery->sysfs_lock); - if (ACPI_SUCCESS(acpi_get_handle(battery->device->handle, - "_BIX", &handle))) + if (acpi_has_method(battery->device->handle, "_BIX")) set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags); result = acpi_battery_update(battery); if (result) |