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intel_menlow: convert acpi_get_handle() to acpi_has_method()

소스 검색 
acpi_has_method() is a new ACPI API introduced to check
the existence of an ACPI control method.

It can be used to replace acpi_get_handle() in the case that
1. the calling function doesn't need the ACPI handle of the control method.
and
2. the calling function doesn't care the reason why the method is unavailable.

Convert acpi_get_handle() to acpi_has_method()
in drivers/platform/x86/intel_menlow.c in this patch.

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>
This commit is contained in:
Zhang Rui
2013-09-03 08:32:04 +08:00
committed by Rafael J. Wysocki
부모 dd13b9a6d5
커밋 70122e3d31
1개의 변경된 파일과 2개의 추가작업 그리고 6개의 파일을 삭제
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8
drivers/platform/x86/intel_menlow.c
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@@ -156,19 +156,15 @@ static struct thermal_cooling_device_ops memory_cooling_ops = {
static int intel_menlow_memory_add(struct acpi_device *device)
{
int result = -ENODEV;
acpi_status status = AE_OK;
acpi_handle dummy;
struct thermal_cooling_device *cdev;
if (!device)
return -EINVAL;
status = acpi_get_handle(device->handle, MEMORY_GET_BANDWIDTH, &dummy);
if (ACPI_FAILURE(status))
if (!acpi_has_method(device->handle, MEMORY_GET_BANDWIDTH))
goto end;
status = acpi_get_handle(device->handle, MEMORY_SET_BANDWIDTH, &dummy);
if (ACPI_FAILURE(status))
if (!acpi_has_method(device->handle, MEMORY_SET_BANDWIDTH))
goto end;
cdev = thermal_cooling_device_register("Memory controller", device,