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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 /Documentation/power | |
| parent | PM / tracing: remove deprecated power trace API (diff) | |
| download | linux-fbadc58dd3a52c330c8f3926aa93011bf9d91fa0.tar.xz linux-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 'Documentation/power')
| -rw-r--r-- | Documentation/power/runtime_pm.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 03591a750f99..6c9f5d9aa115 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -426,6 +426,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: 'power.runtime_error' is set or 'power.disable_depth' is greater than zero) + bool pm_runtime_active(struct device *dev); + - return true if the device's runtime PM status is 'active' or its + 'power.disable_depth' field is not equal to zero, or false otherwise + bool pm_runtime_suspended(struct device *dev); - return true if the device's runtime PM status is 'suspended' and its 'power.disable_depth' field is equal to zero, or false otherwise |