forked from luck/tmp_suning_uos_patched
0b405a0f7e
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>
96 lines
1.5 KiB
C
96 lines
1.5 KiB
C
/*
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* shutdown.c
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*/
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extern void device_shutdown(void);
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#ifdef CONFIG_PM
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/*
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* main.c
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*/
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/*
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* Used to synchronize global power management operations.
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*/
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extern struct semaphore dpm_sem;
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/*
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* Used to serialize changes to the dpm_* lists.
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*/
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extern struct semaphore dpm_list_sem;
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/*
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* The PM lists.
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*/
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extern struct list_head dpm_active;
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extern struct list_head dpm_off;
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extern struct list_head dpm_off_irq;
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static inline struct dev_pm_info * to_pm_info(struct list_head * entry)
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{
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return container_of(entry, struct dev_pm_info, entry);
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}
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static inline struct device * to_device(struct list_head * entry)
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{
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return container_of(to_pm_info(entry), struct device, power);
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}
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extern int device_pm_add(struct device *);
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extern void device_pm_remove(struct device *);
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/*
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* sysfs.c
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*/
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extern int dpm_sysfs_add(struct device *);
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extern void dpm_sysfs_remove(struct device *);
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/*
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* resume.c
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*/
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extern void dpm_resume(void);
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extern void dpm_power_up(void);
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extern int resume_device(struct device *);
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/*
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* suspend.c
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*/
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extern int suspend_device(struct device *, pm_message_t);
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/*
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* runtime.c
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*/
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extern int dpm_runtime_suspend(struct device *, pm_message_t);
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extern void dpm_runtime_resume(struct device *);
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#else /* CONFIG_PM */
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static inline int device_pm_add(struct device * dev)
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{
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return 0;
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}
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static inline void device_pm_remove(struct device * dev)
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{
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}
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static inline int dpm_runtime_suspend(struct device * dev, pm_message_t state)
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{
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return 0;
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}
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static inline void dpm_runtime_resume(struct device * dev)
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{
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}
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#endif
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