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| author | ShuoX Liu <shuox.liu@intel.com> | 2013-01-23 21:49:37 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-01-26 00:39:12 +0100 |
| commit | fbadc58dd3a52c330c8f3926aa93011bf9d91fa0 (patch) | |
| tree | 3610166150f5b4cbd6be81f34c6c589f841df0b9 /include/linux/pm_runtime.h | |
| parent | 43720bd6014327ac454434496cb953edcdb9f8d6 (diff) | |
| download | lwn-fbadc58dd3a52c330c8f3926aa93011bf9d91fa0.tar.gz lwn-fbadc58dd3a52c330c8f3926aa93011bf9d91fa0.zip | |
PM / Runtime: Add new helper function: pm_runtime_active()
This boolean function simply returns whether or not the runtime
status of the device is 'active'. The typical scenario is driver
calls pm_runtime_get firstly, then check pm_runtime_active in
atomic environment.
Also add entry to Documentation/power/runtime.txt
Signed-off-by: Yanmin Zhang <yanmin.zhang@intel.com>
Signed-off-by: ShuoX Liu <shuox.liu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/pm_runtime.h')
| -rw-r--r-- | include/linux/pm_runtime.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index f271860c78d5..c785c215abfc 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -80,6 +80,12 @@ static inline bool pm_runtime_suspended(struct device *dev) && !dev->power.disable_depth; } +static inline bool pm_runtime_active(struct device *dev) +{ + return dev->power.runtime_status == RPM_ACTIVE + || dev->power.disable_depth; +} + static inline bool pm_runtime_status_suspended(struct device *dev) { return dev->power.runtime_status == RPM_SUSPENDED; @@ -132,6 +138,7 @@ static inline void pm_runtime_put_noidle(struct device *dev) {} static inline bool device_run_wake(struct device *dev) { return false; } static inline void device_set_run_wake(struct device *dev, bool enable) {} static inline bool pm_runtime_suspended(struct device *dev) { return false; } +static inline bool pm_runtime_active(struct device *dev) { return true; } static inline bool pm_runtime_status_suspended(struct device *dev) { return false; } static inline bool pm_runtime_enabled(struct device *dev) { return false; } |