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

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Message-ID: <20241107071538.195340-8-dmitry.torokhov@gmail.com>
Date: Wed,  6 Nov 2024 23:15:34 -0800
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: Jiri Kosina <jikos@...nel.org>,
	Benjamin Tissoires <bentiss@...nel.org>,
	Hans de Goede <hdegoede@...hat.com>
Cc: linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 7/8] Input: poller - convert locking to guard notation

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@...il.com>
---
 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