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authorJiang Liu <jiang.liu@huawei.com>2013-06-29 00:24:38 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-15 01:33:10 +0200
commit952c63e9512b63220886105cfc791507046fa39a (patch)
treebf3bd0592ea0fac74418fe16b8a4125e2db799ea /drivers/acpi/battery.c
parent472d963befe28b8614ea2789757b27536c8d79eb (diff)
downloadlinux-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.c11
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)