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, 5 deletions

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 187ab61889e6..81b0f03d97db 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -31,12 +31,9 @@ static u8 sleep_states[ACPI_S_STATE_COUNT];
 
 static void acpi_sleep_tts_switch(u32 acpi_state)
 {
-        union acpi_object in_arg = { ACPI_TYPE_INTEGER };
-        struct acpi_object_list arg_list = { 1, &in_arg };
-        acpi_status status = AE_OK;
+        acpi_status status;
 
-        in_arg.integer.value = acpi_state;
-        status = acpi_evaluate_object(NULL, "\\_TTS", &arg_list, NULL);
+        status = acpi_execute_simple_method(NULL, "\\_TTS", acpi_state);
         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
                 /*
                  * OS can't evaluate the _TTS object correctly. Some warning