PM / Runtime: Improve prepare handling at system suspend for genpd

When genpd prepares for a system suspend it will fetch a runtime
reference for the device. When returning it we now use the
asyncronous runtime PM API. Thus we don't have to wait for the
device to become idle|suspended before we move on and handle the
next device in queue.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index bba575841f53..7072404c8b6d 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -920,7 +920,7 @@ static int pm_genpd_prepare(struct device *dev)
                 pm_wakeup_event(dev, 0);
 
         if (pm_wakeup_pending()) {
-                pm_runtime_put_sync(dev);
+                pm_runtime_put(dev);
                 return -EBUSY;
         }
 
@@ -961,7 +961,7 @@ static int pm_genpd_prepare(struct device *dev)
                 pm_runtime_enable(dev);
         }
 
-        pm_runtime_put_sync(dev);
+        pm_runtime_put(dev);
         return ret;
 }