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PM: Reorganize device PM initialization 

Make the device power management initialization more straightforward
by moving the initialization of common (i.e. used by both runtime PM
and system suspend) fields to a separate routine.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Rafael J. Wysocki 2012-08-06 01:44:28 +02:00
parent cc7ad4564b
commit e91c11b1a7
2 changed files with 17 additions and 12 deletions
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7
drivers/base/power/main.c
View File

@ -57,20 +57,17 @@ static pm_message_t pm_transition;
static int async_error;
/**
* device_pm_init - Initialize the PM-related part of a device object.
* device_pm_sleep_init - Initialize system suspend-related device fields.
* @dev: Device object being initialized.
*/
void device_pm_init(struct device *dev)
void device_pm_sleep_init(struct device *dev)
{
dev->power.is_prepared = false;
dev->power.is_suspended = false;
init_completion(&dev->power.completion);
complete_all(&dev->power.completion);
dev->power.wakeup = NULL;
spin_lock_init(&dev->power.lock);
pm_runtime_init(dev);
INIT_LIST_HEAD(&dev->power.entry);
dev->power.power_state = PMSG_INVALID;
}
/**

22
drivers/base/power/power.h
View File

@ -1,5 +1,11 @@
#include <linux/pm_qos.h>
static inline void device_pm_init_common(struct device *dev)
{
spin_lock_init(&dev->power.lock);
dev->power.power_state = PMSG_INVALID;
}
#ifdef CONFIG_PM_RUNTIME
extern void pm_runtime_init(struct device *dev);
@ -25,7 +31,7 @@ static inline struct device *to_device(struct list_head *entry)
return container_of(entry, struct device, power.entry);
}
extern void device_pm_init(struct device *dev);
extern void device_pm_sleep_init(struct device *dev);
extern void device_pm_add(struct device *);
extern void device_pm_remove(struct device *);
extern void device_pm_move_before(struct device *, struct device *);
@ -34,12 +40,7 @@ extern void device_pm_move_last(struct device *);
#else /* !CONFIG_PM_SLEEP */
static inline void device_pm_init(struct device *dev)
{
spin_lock_init(&dev->power.lock);
dev->power.power_state = PMSG_INVALID;
pm_runtime_init(dev);
}
static inline void device_pm_sleep_init(struct device *dev) {}
static inline void device_pm_add(struct device *dev)
{
@ -60,6 +61,13 @@ static inline void device_pm_move_last(struct device *dev) {}
#endif /* !CONFIG_PM_SLEEP */
static inline void device_pm_init(struct device *dev)
{
device_pm_init_common(dev);
device_pm_sleep_init(dev);
pm_runtime_init(dev);
}
#ifdef CONFIG_PM
/*