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authorZhang Rui <rui.zhang@intel.com>2013-09-03 08:32:04 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-09-24 01:37:55 +0200
commit70122e3d3108d89d7d2dc0d8a11e7163a84d9d40 (patch)
tree3237deff188ee0d5af08f6640022d3878aef538e /drivers/platform/x86/intel_menlow.c
parentdd13b9a6d58d15a2cc596e1eb0baa043705c7bc8 (diff)
intel_menlow: convert acpi_get_handle() to acpi_has_method()
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>
Diffstat (limited to 'drivers/platform/x86/intel_menlow.c')
-rw-r--r--drivers/platform/x86/intel_menlow.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/platform/x86/intel_menlow.c b/drivers/platform/x86/intel_menlow.c
index d6cfc1558c2..11244f8703c 100644
--- a/drivers/platform/x86/intel_menlow.c
+++ b/drivers/platform/x86/intel_menlow.c
@@ -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,