wmi: convert acpi_evaluate_object() to acpi_execute_simple_method()

acpi_execute_simple_method() is a new ACPI API introduced to invoke
an ACPI control method that has single integer parameter and no return value.

Convert acpi_evaluate_object() to acpi_execute_simple_method()
in drivers/platform/x86/wmi.c

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
CC: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
index 601ea95..3bb5506 100644 (file)
--- a/drivers/platform/x86/wmi.c
+++ b/drivers/platform/x86/wmi.c
@@ -252,8 +252,6 @@ static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable)
 {
        struct guid_block *block = NULL;
        char method[5];
-       struct acpi_object_list input;
-       union acpi_object params[1];
        acpi_status status;
        acpi_handle handle;
 
@@ -263,13 +261,9 @@ static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable)
        if (!block)
                return AE_NOT_EXIST;
 
-       input.count = 1;
-       input.pointer = params;
-       params[0].type = ACPI_TYPE_INTEGER;
-       params[0].integer.value = enable;
 
        snprintf(method, 5, "WE%02X", block->notify_id);
-       status = acpi_evaluate_object(handle, method, &input, NULL);
+       status = acpi_execute_simple_method(handle, method, enable);
 
        if (status != AE_OK && status != AE_NOT_FOUND)
                return status;
@@ -355,8 +349,8 @@ struct acpi_buffer *out)
        struct wmi_block *wblock = NULL;
        acpi_handle handle, wc_handle;
        acpi_status status, wc_status = AE_ERROR;
-       struct acpi_object_list input, wc_input;
-       union acpi_object wc_params[1], wq_params[1];
+       struct acpi_object_list input;
+       union acpi_object wq_params[1];
        char method[5];
        char wc_method[5] = "WC";
 
@@ -386,11 +380,6 @@ struct acpi_buffer *out)
         * enable collection.
         */
        if (block->flags & ACPI_WMI_EXPENSIVE) {
-               wc_input.count = 1;
-               wc_input.pointer = wc_params;
-               wc_params[0].type = ACPI_TYPE_INTEGER;
-               wc_params[0].integer.value = 1;
-
                strncat(wc_method, block->object_id, 2);
 
                /*
@@ -400,8 +389,8 @@ struct acpi_buffer *out)
                 */
                wc_status = acpi_get_handle(handle, wc_method, &wc_handle);
                if (ACPI_SUCCESS(wc_status))
-                       wc_status = acpi_evaluate_object(handle, wc_method,
-                               &wc_input, NULL);
+                       wc_status = acpi_execute_simple_method(handle,
+                                                               wc_method, 1);
        }
 
        strcpy(method, "WQ");
@@ -414,9 +403,7 @@ struct acpi_buffer *out)
         * the WQxx method failed - we should disable collection anyway.
         */
        if ((block->flags & ACPI_WMI_EXPENSIVE) && ACPI_SUCCESS(wc_status)) {
-               wc_params[0].integer.value = 0;
-               status = acpi_evaluate_object(handle,
-               wc_method, &wc_input, NULL);
+               status = acpi_execute_simple_method(handle, wc_method, 0);
        }
 
        return status;