ACPI / memhotplug: Use defined marco METHOD_NAME__STA

We already have predefined marco for method name "_STA', so
using the marco instead of directly using the string.

Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 999adb5499c7..dc0880db909c 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -152,8 +152,9 @@ static int acpi_memory_check_device(struct acpi_memory_device *mem_device)
         unsigned long long current_status;
 
         /* Get device present/absent information from the _STA */
-        if (ACPI_FAILURE(acpi_evaluate_integer(mem_device->device->handle, "_STA",
-                                               NULL, &current_status)))
+        if (ACPI_FAILURE(acpi_evaluate_integer(mem_device->device->handle,
+                                               METHOD_NAME__STA, NULL,
+                                               &current_status)))
                 return -ENODEV;
         /*
          * Check for device status. Device should be