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PM / Runtime: Fix error path for prepare 

If a device prepare callback for some reason would fail, the PM core
prevented the device from going inactive forever.

In this case, to reverse the pm_runtime_get_noresume() we invokes the
asyncronous pm_runtime_put(), thus restoring the usage count.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ulf Hansson 2013-11-13 15:45:03 +01:00 committed by Rafael J. Wysocki
parent ea309944e2
commit aa1b9f13b3
1 changed files with 3 additions and 0 deletions
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3
drivers/base/power/main.c
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@ -1277,6 +1277,9 @@ static int device_prepare(struct device *dev, pm_message_t state)
device_unlock(dev);
if (error)
pm_runtime_put(dev);
return error;
}