linux-kernel - [PATCH 5/8] Input: mt - convert locking to guard notation

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Message-ID: <20241107071538.195340-6-dmitry.torokhov@gmail.com>
Date: Wed,  6 Nov 2024 23:15:32 -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 5/8] Input: mt - convert locking to guard notation

Use guard() notation instead of explicitly acquiring and releasing
spinlocks to simplify the code and ensure that all locks are released.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/input/input-mt.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c
index 6b04a674f832..45e41fc9059c 100644
--- a/drivers/input/input-mt.c
+++ b/drivers/input/input-mt.c
@@ -285,14 +285,10 @@ void input_mt_drop_unused(struct input_dev *dev)
 	struct input_mt *mt = dev->mt;
 
 	if (mt) {
-		unsigned long flags;
-
-		spin_lock_irqsave(&dev->event_lock, flags);
+		guard(spinlock_irqsave)(&dev->event_lock);
 
 		__input_mt_drop_unused(dev, mt);
 		mt->frame++;
-
-		spin_unlock_irqrestore(&dev->event_lock, flags);
 	}
 }
 EXPORT_SYMBOL(input_mt_drop_unused);
@@ -339,11 +335,8 @@ void input_mt_sync_frame(struct input_dev *dev)
 		return;
 
 	if (mt->flags & INPUT_MT_DROP_UNUSED) {
-		unsigned long flags;
-
-		spin_lock_irqsave(&dev->event_lock, flags);
+		guard(spinlock_irqsave)(&dev->event_lock);
 		__input_mt_drop_unused(dev, mt);
-		spin_unlock_irqrestore(&dev->event_lock, flags);
 	}
 
 	if ((mt->flags & INPUT_MT_POINTER) && !(mt->flags & INPUT_MT_SEMI_MT))
-- 
2.47.0.277.g8800431eea-goog