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authorShuoX Liu <shuox.liu@intel.com>2013-01-24 00:49:37 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-26 03:39:12 +0400
commitfbadc58dd3a52c330c8f3926aa93011bf9d91fa0 (patch)
tree3610166150f5b4cbd6be81f34c6c589f841df0b9 /include/linux/pm_runtime.h
parent43720bd6014327ac454434496cb953edcdb9f8d6 (diff)
downloadlinux-fbadc58dd3a52c330c8f3926aa93011bf9d91fa0.tar.xz
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.h7
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; }