diff options
Diffstat (limited to 'Documentation/power/runtime_pm.rst')
| -rw-r--r-- | Documentation/power/runtime_pm.rst | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/power/runtime_pm.rst b/Documentation/power/runtime_pm.rst index 18ae21bf7f92..b48cac5f9048 100644 --- a/Documentation/power/runtime_pm.rst +++ b/Documentation/power/runtime_pm.rst @@ -378,7 +378,11 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: `int pm_runtime_get_sync(struct device *dev);` - increment the device's usage counter, run pm_runtime_resume(dev) and - return its result + return its result; + note that it does not drop the device's usage counter on errors, so + consider using pm_runtime_resume_and_get() instead of it, especially + if its return value is checked by the caller, as this is likely to + result in cleaner code. `int pm_runtime_get_if_in_use(struct device *dev);` - return -EINVAL if 'power.disable_depth' is nonzero; otherwise, if the |