ACPI: introduce helper function acpi_execute_simple_method()

Introduce helper function acpi_execute_simple_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>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index a7627166e18b..74669ac4c615 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -525,18 +525,14 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
 static int acpi_battery_set_alarm(struct acpi_battery *battery)
 {
         acpi_status status = 0;
-        union acpi_object arg0 = { .type = ACPI_TYPE_INTEGER };
-        struct acpi_object_list arg_list = { 1, &arg0 };
 
         if (!acpi_battery_present(battery) ||
             !test_bit(ACPI_BATTERY_ALARM_PRESENT, &battery->flags))
                 return -ENODEV;
 
-        arg0.integer.value = battery->alarm;
-
         mutex_lock(&battery->lock);
-        status = acpi_evaluate_object(battery->device->handle, "_BTP",
-                                 &arg_list, NULL);
+        status = acpi_execute_simple_method(battery->device->handle, "_BTP",
+                                            battery->alarm);
         mutex_unlock(&battery->lock);
 
         if (ACPI_FAILURE(status))