summaryrefslogtreecommitdiff
path: root/drivers/acpi/device_pm.c
diff options
context:
space:
mode:
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-07-23 01:01:41 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-07-23 01:01:41 +0200
commit17653a3e098dc20ae1db7459344a81c386625696 (patch)
tree63c7cd4e92102ac257a9274705c672725c10b3fc /drivers/acpi/device_pm.c
parentf35cec255557d1037ff0d772edfd6e7b1e92cdc0 (diff)
ACPI / PM: Use ACPI_COMPANION() instead of ACPI_HANDLE()
The ACPI_HANDLE() macro evaluates ACPI_COMPANION() internally to return the handle of the device's ACPI companion, so it is much more straightforward and efficient to use ACPI_COMPANION() directly to obtain the device's ACPI companion object instead of using ACPI_HANDLE() and acpi_bus_get_device() on the returned handle for the same thing. Do that in three places in the ACPI device PM code. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/device_pm.c')
-rw-r--r--drivers/acpi/device_pm.c21
1 files changed, 9 insertions, 12 deletions
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index ad2810900799..67075f800e34 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -596,7 +596,6 @@ static int acpi_dev_pm_get_state(struct device *dev, struct acpi_device *adev,
*/
int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p, int d_max_in)
{
- acpi_handle handle = ACPI_HANDLE(dev);
struct acpi_device *adev;
int ret, d_min, d_max;
@@ -611,8 +610,9 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p, int d_max_in)
d_max_in = ACPI_STATE_D3_HOT;
}
- if (!handle || acpi_bus_get_device(handle, &adev)) {
- dev_dbg(dev, "ACPI handle without context in %s!\n", __func__);
+ adev = ACPI_COMPANION(dev);
+ if (!adev) {
+ dev_dbg(dev, "ACPI companion missing in %s!\n", __func__);
return -ENODEV;
}
@@ -700,15 +700,13 @@ static int acpi_device_wakeup(struct acpi_device *adev, u32 target_state,
int acpi_pm_device_run_wake(struct device *phys_dev, bool enable)
{
struct acpi_device *adev;
- acpi_handle handle;
if (!device_run_wake(phys_dev))
return -EINVAL;
- handle = ACPI_HANDLE(phys_dev);
- if (!handle || acpi_bus_get_device(handle, &adev)) {
- dev_dbg(phys_dev, "ACPI handle without context in %s!\n",
- __func__);
+ adev = ACPI_COMPANION(phys_dev);
+ if (!adev) {
+ dev_dbg(phys_dev, "ACPI companion missing in %s!\n", __func__);
return -ENODEV;
}
@@ -725,16 +723,15 @@ EXPORT_SYMBOL(acpi_pm_device_run_wake);
*/
int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
{
- acpi_handle handle;
struct acpi_device *adev;
int error;
if (!device_can_wakeup(dev))
return -EINVAL;
- handle = ACPI_HANDLE(dev);
- if (!handle || acpi_bus_get_device(handle, &adev)) {
- dev_dbg(dev, "ACPI handle without context in %s!\n", __func__);
+ adev = ACPI_COMPANION(dev);
+ if (!adev) {
+ dev_dbg(dev, "ACPI companion missing in %s!\n", __func__);
return -ENODEV;
}