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Commit 2421ad48 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

ACPI / PM: Drop two functions that are not used any more 



Two functions defined in device_pm.c, acpi_dev_pm_add_dependent()
and acpi_dev_pm_remove_dependent(), have no callers and may be
dropped, so drop them.

Moreover, they are the only functions adding entries to and removing
entries from the power_dependent list in struct acpi_device, so drop
that list too.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent b08fc109

drivers/acpi/device_pm.c

+0 −56
Original line number Diff line number Diff line
@@ -1025,60 +1025,4 @@ void acpi_dev_pm_detach(struct device *dev, bool power_off) 
	}

}

EXPORT_SYMBOL_GPL(acpi_dev_pm_detach);



/**

 * acpi_dev_pm_add_dependent - Add physical device depending for PM.

 * @handle: Handle of ACPI device node.

 * @depdev: Device depending on that node for PM.

 */

void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev)

{

	struct acpi_device_physical_node *dep;

	struct acpi_device *adev;



	if (!depdev || acpi_bus_get_device(handle, &adev))

		return;



	mutex_lock(&adev->physical_node_lock);



	list_for_each_entry(dep, &adev->power_dependent, node)

		if (dep->dev == depdev)

			goto out;



	dep = kzalloc(sizeof(*dep), GFP_KERNEL);

	if (dep) {

		dep->dev = depdev;

		list_add_tail(&dep->node, &adev->power_dependent);

	}



 out:

	mutex_unlock(&adev->physical_node_lock);

}

EXPORT_SYMBOL_GPL(acpi_dev_pm_add_dependent);



/**

 * acpi_dev_pm_remove_dependent - Remove physical device depending for PM.

 * @handle: Handle of ACPI device node.

 * @depdev: Device depending on that node for PM.

 */

void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev)

{

	struct acpi_device_physical_node *dep;

	struct acpi_device *adev;



	if (!depdev || acpi_bus_get_device(handle, &adev))

		return;



	mutex_lock(&adev->physical_node_lock);



	list_for_each_entry(dep, &adev->power_dependent, node)

		if (dep->dev == depdev) {

			list_del(&dep->node);

			kfree(dep);

			break;

		}



	mutex_unlock(&adev->physical_node_lock);

}

EXPORT_SYMBOL_GPL(acpi_dev_pm_remove_dependent);

#endif /* CONFIG_PM */

drivers/acpi/scan.c

+0 −1
Original line number Diff line number Diff line
@@ -999,7 +999,6 @@ int acpi_device_add(struct acpi_device *device, 
	INIT_LIST_HEAD(&device->wakeup_list);

	INIT_LIST_HEAD(&device->physical_node_list);

	mutex_init(&device->physical_node_lock);

	INIT_LIST_HEAD(&device->power_dependent);



	new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL);

	if (!new_bus_id) {

include/acpi/acpi_bus.h

+0 −7
Original line number Diff line number Diff line
@@ -311,7 +311,6 @@ struct acpi_device { 
	unsigned int physical_node_count;

	struct list_head physical_node_list;

	struct mutex physical_node_lock;

	struct list_head power_dependent;

	void (*remove)(struct acpi_device *);

};
@@ -456,8 +455,6 @@ acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 
acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,

				    acpi_notify_handler handler);

int acpi_pm_device_sleep_state(struct device *, int *, int);

void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);

void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);

#else

static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev,

					       acpi_notify_handler handler,
@@ -478,10 +475,6 @@ static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 
	return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ?

		m : ACPI_STATE_D0;

}

static inline void acpi_dev_pm_add_dependent(acpi_handle handle,

					     struct device *depdev) {}

static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,

						struct device *depdev) {}

#endif



#ifdef CONFIG_PM_RUNTIME