kernel-ark/drivers/base/power/power.h
David Brownell 0b405a0f7e [PATCH] Driver Core: remove driver model detach_state
The driver model has a "detach_state" mechanism that:

 - Has never been used by any in-kernel drive;
 - Is superfluous, since driver remove() methods can do the same thing;
 - Became buggy when the suspend() parameter changed semantics and type;
 - Could self-deadlock when called from certain suspend contexts;
 - Is effectively wasted documentation, object code, and headspace.

This removes that "detach_state" mechanism; net code shrink, as well
as a per-device saving in the driver model and sysfs.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-05-17 14:54:55 -07:00

96 lines
1.5 KiB
C

/*
* shutdown.c
*/
extern void device_shutdown(void);
#ifdef CONFIG_PM
/*
* main.c
*/
/*
* Used to synchronize global power management operations.
*/
extern struct semaphore dpm_sem;
/*
* Used to serialize changes to the dpm_* lists.
*/
extern struct semaphore dpm_list_sem;
/*
* The PM lists.
*/
extern struct list_head dpm_active;
extern struct list_head dpm_off;
extern struct list_head dpm_off_irq;
static inline struct dev_pm_info * to_pm_info(struct list_head * entry)
{
return container_of(entry, struct dev_pm_info, entry);
}
static inline struct device * to_device(struct list_head * entry)
{
return container_of(to_pm_info(entry), struct device, power);
}
extern int device_pm_add(struct device *);
extern void device_pm_remove(struct device *);
/*
* sysfs.c
*/
extern int dpm_sysfs_add(struct device *);
extern void dpm_sysfs_remove(struct device *);
/*
* resume.c
*/
extern void dpm_resume(void);
extern void dpm_power_up(void);
extern int resume_device(struct device *);
/*
* suspend.c
*/
extern int suspend_device(struct device *, pm_message_t);
/*
* runtime.c
*/
extern int dpm_runtime_suspend(struct device *, pm_message_t);
extern void dpm_runtime_resume(struct device *);
#else /* CONFIG_PM */
static inline int device_pm_add(struct device * dev)
{
return 0;
}
static inline void device_pm_remove(struct device * dev)
{
}
static inline int dpm_runtime_suspend(struct device * dev, pm_message_t state)
{
return 0;
}
static inline void dpm_runtime_resume(struct device * dev)
{
}
#endif