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authorDmitry Baryshkov <dmitry.baryshkov@linaro.org>2021-07-31 22:50:32 +0300
committerStephen Boyd <sboyd@kernel.org>2021-08-26 21:27:51 +0300
commitb3636a3a2c51715736d3ec45f635ed03191962ce (patch)
tree1d272a76183dccc1ac1980148239962a51fda3ec /drivers/base
parent5d9bc010db0a4f5b17b3f5f982a85c49bb911754 (diff)
downloadlinux-b3636a3a2c51715736d3ec45f635ed03191962ce.tar.xz
PM: runtime: add devm_pm_runtime_enable helper
A typical code pattern for pm_runtime_enable() call is to call it in the _probe function and to call pm_runtime_disable() both from _probe error path and from _remove function. For some drivers the whole remove function would consist of the call to pm_remove_disable(). Add helper function to replace this bolierplate piece of code. Calling devm_pm_runtime_enable() removes the need for calling pm_runtime_disable() both in the probe()'s error path and in the remove() function. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20210731195034.979084-2-dmitry.baryshkov@linaro.org Acked-by: Rafael J. Wysocki <rafael@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/runtime.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 8a66eaf731e4..ec94049442b9 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -1447,6 +1447,23 @@ void pm_runtime_enable(struct device *dev)
}
EXPORT_SYMBOL_GPL(pm_runtime_enable);
+static void pm_runtime_disable_action(void *data)
+{
+ pm_runtime_disable(data);
+}
+
+/**
+ * devm_pm_runtime_enable - devres-enabled version of pm_runtime_enable.
+ * @dev: Device to handle.
+ */
+int devm_pm_runtime_enable(struct device *dev)
+{
+ pm_runtime_enable(dev);
+
+ return devm_add_action_or_reset(dev, pm_runtime_disable_action, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_runtime_enable);
+
/**
* pm_runtime_forbid - Block runtime PM of a device.
* @dev: Device to handle.