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ACPI / PM: Use ACPI_COMPANION() to get ACPI companions of devices 

The ACPI device PM code in device_pm.c uses a special function,
acpi_dev_pm_get_node(), to obtain an ACPI companion object of a given
device.  However, that is not necessary any more after recent changes
that introduced the ACPI_COMPANION() macro serving exactly the same
purpose, but working in a much more straightforward way.  For this
reason, drop acpi_dev_pm_get_node() and use ACPI_COMPANION() instead
of it everywhere.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2014-01-27 23:10:24 +01:00
parent d8ec26d7f8
commit 79c0373f3e
1 changed files with 6 additions and 18 deletions
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24
drivers/acpi/device_pm.c
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@ -712,18 +712,6 @@ int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
}
#endif /* CONFIG_PM_SLEEP */
/**
* acpi_dev_pm_get_node - Get ACPI device node for the given physical device.
* @dev: Device to get the ACPI node for.
*/
struct acpi_device *acpi_dev_pm_get_node(struct device *dev)
{
acpi_handle handle = ACPI_HANDLE(dev);
struct acpi_device *adev;
return handle && !acpi_bus_get_device(handle, &adev) ? adev : NULL;
}
/**
* acpi_dev_pm_low_power - Put ACPI device into a low-power state.
* @dev: Device to put into a low-power state.
@ -764,7 +752,7 @@ static int acpi_dev_pm_full_power(struct acpi_device *adev)
*/
int acpi_dev_runtime_suspend(struct device *dev)
{
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
struct acpi_device *adev = ACPI_COMPANION(dev);
bool remote_wakeup;
int error;
@ -795,7 +783,7 @@ EXPORT_SYMBOL_GPL(acpi_dev_runtime_suspend);
*/
int acpi_dev_runtime_resume(struct device *dev)
{
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
struct acpi_device *adev = ACPI_COMPANION(dev);
int error;
if (!adev)
@ -848,7 +836,7 @@ EXPORT_SYMBOL_GPL(acpi_subsys_runtime_resume);
*/
int acpi_dev_suspend_late(struct device *dev)
{
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
struct acpi_device *adev = ACPI_COMPANION(dev);
u32 target_state;
bool wakeup;
int error;
@ -880,7 +868,7 @@ EXPORT_SYMBOL_GPL(acpi_dev_suspend_late);
*/
int acpi_dev_resume_early(struct device *dev)
{
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
struct acpi_device *adev = ACPI_COMPANION(dev);
int error;
if (!adev)
@ -971,7 +959,7 @@ static struct dev_pm_domain acpi_general_pm_domain = {
*/
int acpi_dev_pm_attach(struct device *dev, bool power_on)
{
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
struct acpi_device *adev = ACPI_COMPANION(dev);
if (!adev)
return -ENODEV;
@ -1003,7 +991,7 @@ EXPORT_SYMBOL_GPL(acpi_dev_pm_attach);
*/
void acpi_dev_pm_detach(struct device *dev, bool power_off)
{
struct acpi_device *adev = acpi_dev_pm_get_node(dev);
struct acpi_device *adev = ACPI_COMPANION(dev);
if (adev && dev->pm_domain == &acpi_general_pm_domain) {
dev->pm_domain = NULL;