[PATCH] acpi/mem_hotplug: Use defined marco METHOD_NAME__STA

[Zhang Yanfei]

From: Zhang Yanfei <zhangyan...@cn.fujitsu.com>

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

Signed-off-by: Zhang Yanfei <zhangyan...@cn.fujitsu.com>
---
 drivers/acpi/acpi_memhotplug.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index 999adb5..dc0880d 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
-- 
1.7.1
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