path: root/Documentation/power
diff options
authorShuoX Liu <shuox.liu@intel.com>2013-01-23 21:49:37 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-01-26 00:39:12 +0100
commitfbadc58dd3a52c330c8f3926aa93011bf9d91fa0 (patch)
tree3610166150f5b4cbd6be81f34c6c589f841df0b9 /Documentation/power
parent43720bd6014327ac454434496cb953edcdb9f8d6 (diff)
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')
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
+ 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

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