Messages in this thread Patch in this message | | | From | Tomeu Vizoso <> | Subject | [PATCH v3 2/2] PM / Runtime: Add pm_runtime_enable_recursive | Date | Tue, 19 May 2015 16:11:16 +0200 |
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This function makes less cumbersome to enable runtime PM in a device and its descendants.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> --- drivers/base/power/runtime.c | 15 +++++++++++++++ include/linux/pm_runtime.h | 1 + 2 files changed, 16 insertions(+)
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 5070c4f..2c96f3f 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -1189,6 +1189,21 @@ void pm_runtime_enable(struct device *dev) } EXPORT_SYMBOL_GPL(pm_runtime_enable); +static int __pm_runtime_enable_recursive(struct device *dev, void *data) +{ + pm_runtime_enable(dev); + + device_for_each_child(dev, NULL, __pm_runtime_enable_recursive); + + return 0; +} + +void pm_runtime_enable_recursive(struct device *dev) +{ + __pm_runtime_enable_recursive(dev, NULL); +} +EXPORT_SYMBOL_GPL(pm_runtime_enable_recursive); + /** * pm_runtime_forbid - Block runtime PM of a device. * @dev: Device to handle. diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 30e84d4..d393ac3 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -43,6 +43,7 @@ extern int pm_schedule_suspend(struct device *dev, unsigned int delay); extern int __pm_runtime_set_status(struct device *dev, unsigned int status); extern int pm_runtime_barrier(struct device *dev); extern void pm_runtime_enable(struct device *dev); +extern void pm_runtime_enable_recursive(struct device *dev); extern void __pm_runtime_disable(struct device *dev, bool check_resume); extern void pm_runtime_allow(struct device *dev); extern void pm_runtime_forbid(struct device *dev); -- 2.4.1
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