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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2012-06-16 15:20:11 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2012-07-03 19:06:25 +0200 |
| commit | 6e797a078824b30afbfae6cc4b1c2b21c51761ef (patch) | |
| tree | 7f58824b2c1e62b954683900024a5b97a4d30b4d /include/linux/cpuidle.h | |
| parent | dc7fd275ae60ef8edf952aff2a62462f5d892fd4 (diff) | |
| download | lwn-6e797a078824b30afbfae6cc4b1c2b21c51761ef.tar.gz lwn-6e797a078824b30afbfae6cc4b1c2b21c51761ef.zip | |
PM / cpuidle: Add driver reference counter
Add a reference counter for the cpuidle driver, so that it can't
be unregistered when it is in use.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include/linux/cpuidle.h')
| -rw-r--r-- | include/linux/cpuidle.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 8570012a535a..27cfced7b57b 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -136,7 +136,9 @@ struct cpuidle_driver { extern void disable_cpuidle(void); extern int cpuidle_idle_call(void); extern int cpuidle_register_driver(struct cpuidle_driver *drv); -struct cpuidle_driver *cpuidle_get_driver(void); +extern struct cpuidle_driver *cpuidle_get_driver(void); +extern struct cpuidle_driver *cpuidle_driver_ref(void); +extern void cpuidle_driver_unref(void); extern void cpuidle_unregister_driver(struct cpuidle_driver *drv); extern int cpuidle_register_device(struct cpuidle_device *dev); extern void cpuidle_unregister_device(struct cpuidle_device *dev); @@ -157,6 +159,8 @@ static inline int cpuidle_idle_call(void) { return -ENODEV; } static inline int cpuidle_register_driver(struct cpuidle_driver *drv) {return -ENODEV; } static inline struct cpuidle_driver *cpuidle_get_driver(void) {return NULL; } +static inline struct cpuidle_driver *cpuidle_driver_ref(void) {return NULL; } +static inline void cpuidle_driver_unref(void) {} static inline void cpuidle_unregister_driver(struct cpuidle_driver *drv) { } static inline int cpuidle_register_device(struct cpuidle_device *dev) {return -ENODEV; } |