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Commit 20d652d7 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

PM: Update kerneldoc comments in drivers/base/power/main.c 



The kerneldoc comments in drivers/base/power/main.c are generally
outdated and some of them don't describe the functions very
accurately.  Update them and standardize the format to use spaces
instead of tabs.

Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Acked-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
parent 9d62ec6c

drivers/base/power/main.c

+84 −85
Original line number Diff line number Diff line
@@ -50,7 +50,7 @@ static DEFINE_MUTEX(dpm_list_mtx); 
static bool transition_started;



/**

 * device_pm_init - Initialize the PM-related part of a device object

 * device_pm_init - Initialize the PM-related part of a device object.

 * @dev: Device object being initialized.

 */

void device_pm_init(struct device *dev)
@@ -60,7 +60,7 @@ void device_pm_init(struct device *dev) 
}



/**

 *	device_pm_lock - lock the list of active devices used by the PM core

 * device_pm_lock - Lock the list of active devices used by the PM core.

 */

void device_pm_lock(void)

{
@@ -68,7 +68,7 @@ void device_pm_lock(void) 
}



/**

 *	device_pm_unlock - unlock the list of active devices used by the PM core

 * device_pm_unlock - Unlock the list of active devices used by the PM core.

 */

void device_pm_unlock(void)

{
@@ -76,8 +76,8 @@ void device_pm_unlock(void) 
}



/**

 *	device_pm_add - add a device to the list of active devices

 *	@dev:	Device to be added to the list

 * device_pm_add - Add a device to the PM core's list of active devices.

 * @dev: Device to add to the list.

 */

void device_pm_add(struct device *dev)

{
@@ -103,10 +103,8 @@ void device_pm_add(struct device *dev) 
}



/**

 *	device_pm_remove - remove a device from the list of active devices

 *	@dev:	Device to be removed from the list

 *

 *	This function also removes the device's PM-related sysfs attributes.

 * device_pm_remove - Remove a device from the PM core's list of active devices.

 * @dev: Device to be removed from the list.

 */

void device_pm_remove(struct device *dev)

{
@@ -120,9 +118,9 @@ void device_pm_remove(struct device *dev) 
}



/**

 *	device_pm_move_before - move device in dpm_list

 *	@deva:  Device to move in dpm_list

 *	@devb:  Device @deva should come before

 * device_pm_move_before - Move device in the PM core's list of active devices.

 * @deva: Device to move in dpm_list.

 * @devb: Device @deva should come before.

 */

void device_pm_move_before(struct device *deva, struct device *devb)

{
@@ -136,9 +134,9 @@ void device_pm_move_before(struct device *deva, struct device *devb) 
}



/**

 *	device_pm_move_after - move device in dpm_list

 *	@deva:  Device to move in dpm_list

 *	@devb:  Device @deva should come after

 * device_pm_move_after - Move device in the PM core's list of active devices.

 * @deva: Device to move in dpm_list.

 * @devb: Device @deva should come after.

 */

void device_pm_move_after(struct device *deva, struct device *devb)

{
@@ -152,8 +150,8 @@ void device_pm_move_after(struct device *deva, struct device *devb) 
}



/**

 * 	device_pm_move_last - move device to end of dpm_list

 * 	@dev:   Device to move in dpm_list

 * device_pm_move_last - Move device to end of the PM core's list of devices.

 * @dev: Device to move in dpm_list.

 */

void device_pm_move_last(struct device *dev)

{
@@ -164,8 +162,8 @@ void device_pm_move_last(struct device *dev) 
}



/**

 *	pm_op - execute the PM operation appropiate for given PM event

 *	@dev:	Device.

 * pm_op - Execute the PM operation appropriate for given PM event.

 * @dev: Device to handle.

 * @ops: PM operations to choose from.

 * @state: PM transition of the system being carried out.

 */
@@ -225,13 +223,13 @@ static int pm_op(struct device *dev, 
}



/**

 *	pm_noirq_op - execute the PM operation appropiate for given PM event

 *	@dev:	Device.

 * pm_noirq_op - Execute the PM operation appropriate for given PM event.

 * @dev: Device to handle.

 * @ops: PM operations to choose from.

 * @state: PM transition of the system being carried out.

 *

 *	The operation is executed with interrupts disabled by the only remaining

 *	functional CPU in the system.

 * The driver of @dev will not receive interrupts while this function is being

 * executed.

 */

static int pm_noirq_op(struct device *dev,

			const struct dev_pm_ops *ops,
@@ -329,11 +327,12 @@ static void pm_dev_err(struct device *dev, pm_message_t state, char *info, 
/*------------------------- Resume routines -------------------------*/



/**

 *	device_resume_noirq - Power on one device (early resume).

 *	@dev:	Device.

 * device_resume_noirq - Execute an "early resume" callback for given device.

 * @dev: Device to handle.

 * @state: PM transition of the system being carried out.

 *

 *	Must be called with interrupts disabled.

 * The driver of @dev will not receive interrupts while this function is being

 * executed.

 */

static int device_resume_noirq(struct device *dev, pm_message_t state)

{
@@ -355,14 +354,11 @@ static int device_resume_noirq(struct device *dev, pm_message_t state) 
}



/**

 *	dpm_resume_noirq - Power on all regular (non-sysdev) devices.

 * dpm_resume_noirq - Execute "early resume" callbacks for non-sysdev devices.

 * @state: PM transition of the system being carried out.

 *

 *	Call the "noirq" resume handlers for all devices marked as

 *	DPM_OFF_IRQ and enable device drivers to receive interrupts.

 *

 *	Must be called under dpm_list_mtx.  Device drivers should not receive

 *	interrupts while it's being executed.

 * Call the "noirq" resume handlers for all devices marked as DPM_OFF_IRQ and

 * enable device drivers to receive interrupts.

 */

void dpm_resume_noirq(pm_message_t state)

{
@@ -384,8 +380,8 @@ void dpm_resume_noirq(pm_message_t state) 
EXPORT_SYMBOL_GPL(dpm_resume_noirq);



/**

 *	device_resume - Restore state for one device.

 *	@dev:	Device.

 * device_resume - Execute "resume" callbacks for given device.

 * @dev: Device to handle.

 * @state: PM transition of the system being carried out.

 */

static int device_resume(struct device *dev, pm_message_t state)
@@ -435,11 +431,11 @@ static int device_resume(struct device *dev, pm_message_t state) 
}



/**

 *	dpm_resume - Resume every device.

 * dpm_resume - Execute "resume" callbacks for non-sysdev devices.

 * @state: PM transition of the system being carried out.

 *

 *	Execute the appropriate "resume" callback for all devices the status of

 *	which indicates that they are inactive.

 * Execute the appropriate "resume" callback for all devices whose status

 * indicates that they are suspended.

 */

static void dpm_resume(pm_message_t state)

{
@@ -476,8 +472,8 @@ static void dpm_resume(pm_message_t state) 
}



/**

 *	device_complete - Complete a PM transition for given device

 *	@dev:	Device.

 * device_complete - Complete a PM transition for given device.

 * @dev: Device to handle.

 * @state: PM transition of the system being carried out.

 */

static void device_complete(struct device *dev, pm_message_t state)
@@ -503,11 +499,11 @@ static void device_complete(struct device *dev, pm_message_t state) 
}



/**

 *	dpm_complete - Complete a PM transition for all devices.

 * dpm_complete - Complete a PM transition for all non-sysdev devices.

 * @state: PM transition of the system being carried out.

 *

 *	Execute the ->complete() callbacks for all devices that are not marked

 *	as DPM_ON.

 * Execute the ->complete() callbacks for all devices whose PM status is not

 * DPM_ON (this allows new devices to be registered).

 */

static void dpm_complete(pm_message_t state)

{
@@ -537,11 +533,11 @@ static void dpm_complete(pm_message_t state) 
}



/**

 *	dpm_resume_end - Restore state of each device in system.

 * dpm_resume_end - Execute "resume" callbacks and complete system transition.

 * @state: PM transition of the system being carried out.

 *

 *	Resume all the devices, unlock them all, and allow new

 *	devices to be registered once again.

 * Execute "resume" callbacks for all devices and complete the PM transition of

 * the system.

 */

void dpm_resume_end(pm_message_t state)

{
@@ -555,9 +551,11 @@ EXPORT_SYMBOL_GPL(dpm_resume_end); 
/*------------------------- Suspend routines -------------------------*/



/**

 *	resume_event - return a PM message representing the resume event

 *	               corresponding to given sleep state.

 * resume_event - Return a "resume" message for given "suspend" sleep state.

 * @sleep_state: PM message representing a sleep state.

 *

 * Return a PM message representing the resume event corresponding to given

 * sleep state.

 */

static pm_message_t resume_event(pm_message_t sleep_state)

{
@@ -574,11 +572,12 @@ static pm_message_t resume_event(pm_message_t sleep_state) 
}



/**

 *	device_suspend_noirq - Shut down one device (late suspend).

 *	@dev:	Device.

 * device_suspend_noirq - Execute a "late suspend" callback for given device.

 * @dev: Device to handle.

 * @state: PM transition of the system being carried out.

 *

 *	This is called with interrupts off and only a single CPU running.

 * The driver of @dev will not receive interrupts while this function is being

 * executed.

 */

static int device_suspend_noirq(struct device *dev, pm_message_t state)

{
@@ -595,13 +594,11 @@ static int device_suspend_noirq(struct device *dev, pm_message_t state) 
}



/**

 *	dpm_suspend_noirq - Power down all regular (non-sysdev) devices.

 * dpm_suspend_noirq - Execute "late suspend" callbacks for non-sysdev devices.

 * @state: PM transition of the system being carried out.

 *

 *	Prevent device drivers from receiving interrupts and call the "noirq"

 *	suspend handlers.

 *

 *	Must be called under dpm_list_mtx.

 * Prevent device drivers from receiving interrupts and call the "noirq" suspend

 * handlers for all non-sysdev devices.

 */

int dpm_suspend_noirq(pm_message_t state)

{
@@ -626,8 +623,8 @@ int dpm_suspend_noirq(pm_message_t state) 
EXPORT_SYMBOL_GPL(dpm_suspend_noirq);



/**

 *	device_suspend - Save state of one device.

 *	@dev:	Device.

 * device_suspend - Execute "suspend" callbacks for given device.

 * @dev: Device to handle.

 * @state: PM transition of the system being carried out.

 */

static int device_suspend(struct device *dev, pm_message_t state)
@@ -675,10 +672,8 @@ static int device_suspend(struct device *dev, pm_message_t state) 
}



/**

 *	dpm_suspend - Suspend every device.

 * dpm_suspend - Execute "suspend" callbacks for all non-sysdev devices.

 * @state: PM transition of the system being carried out.

 *

 *	Execute the appropriate "suspend" callbacks for all devices.

 */

static int dpm_suspend(pm_message_t state)

{
@@ -712,9 +707,12 @@ static int dpm_suspend(pm_message_t state) 
}



/**

 *	device_prepare - Execute the ->prepare() callback(s) for given device.

 *	@dev:	Device.

 * device_prepare - Prepare a device for system power transition.

 * @dev: Device to handle.

 * @state: PM transition of the system being carried out.

 *

 * Execute the ->prepare() callback(s) for given device.  No new children of the

 * device may be registered after this function has returned.

 */

static int device_prepare(struct device *dev, pm_message_t state)

{
@@ -750,10 +748,10 @@ static int device_prepare(struct device *dev, pm_message_t state) 
}



/**

 *	dpm_prepare - Prepare all devices for a PM transition.

 * dpm_prepare - Prepare all non-sysdev devices for a system PM transition.

 * @state: PM transition of the system being carried out.

 *

 *	Execute the ->prepare() callback for all devices.

 * Execute the ->prepare() callback(s) for all devices.

 */

static int dpm_prepare(pm_message_t state)

{
@@ -804,10 +802,11 @@ static int dpm_prepare(pm_message_t state) 
}



/**

 *	dpm_suspend_start - Save state and stop all devices in system.

 * dpm_suspend_start - Prepare devices for PM transition and suspend them.

 * @state: PM transition of the system being carried out.

 *

 *	Prepare and suspend all devices.

 * Prepare all non-sysdev devices for system PM transition and execute "suspend"

 * callbacks for them.

 */

int dpm_suspend_start(pm_message_t state)

{