[PATCH 7/8] Input: poller - convert locking to guard notation

[Dmitry Torokhov]

Use guard() notation instead of explicitly acquiring and releasing
mutex to simplify the code and ensure that it is released.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
---
 drivers/input/input-poller.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/input/input-poller.c b/drivers/input/input-poller.c
index 688e3cb1c2a0..9c57713a6151 100644
--- a/drivers/input/input-poller.c
+++ b/drivers/input/input-poller.c
@@ -162,7 +162,7 @@ static ssize_t input_dev_set_poll_interval(struct device *dev,
 	if (interval > poller->poll_interval_max)
 		return -EINVAL;
 
-	mutex_lock(&input->mutex);
+	guard(mutex)(&input->mutex);
 
 	poller->poll_interval = interval;
 
@@ -172,8 +172,6 @@ static ssize_t input_dev_set_poll_interval(struct device *dev,
 			input_dev_poller_queue_work(poller);
 	}
 
-	mutex_unlock(&input->mutex);
-
 	return count;
 }
 
-- 
2.47.0.277.g8800431eea-goog