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[13/17] Input: pmic8xxx-keypad - use guard notation when acquiring mutex

Message ID 20240825051627.2848495-14-dmitry.torokhov@gmail.com
State Accepted
Commit 9e09354cb6f6858e3e54627c2e4f49d07bfae45e
Headers show
Series Convert keyboard drivers to use new cleanup facilities | expand

Commit Message

Dmitry Torokhov Aug. 25, 2024, 5:16 a.m. UTC 
This makes the code more compact and error handling more robust
by ensuring that mutexes are released in all code paths when control
leaves critical section.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
 drivers/input/keyboard/pmic8xxx-keypad.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
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Patch

diff --git a/drivers/input/keyboard/pmic8xxx-keypad.c b/drivers/input/keyboard/pmic8xxx-keypad.c
index 26a005f9ace3..35d1aa2a22a5 100644
--- a/drivers/input/keyboard/pmic8xxx-keypad.c
+++ b/drivers/input/keyboard/pmic8xxx-keypad.c
@@ -630,12 +630,10 @@  static int pmic8xxx_kp_suspend(struct device *dev)
 	if (device_may_wakeup(dev)) {
 		enable_irq_wake(kp->key_sense_irq);
 	} else {
-		mutex_lock(&input_dev->mutex);
+		guard(mutex)(&input_dev->mutex);
 
 		if (input_device_enabled(input_dev))
 			pmic8xxx_kp_disable(kp);
-
-		mutex_unlock(&input_dev->mutex);
 	}
 
 	return 0;
@@ -650,12 +648,10 @@  static int pmic8xxx_kp_resume(struct device *dev)
 	if (device_may_wakeup(dev)) {
 		disable_irq_wake(kp->key_sense_irq);
 	} else {
-		mutex_lock(&input_dev->mutex);
+		guard(mutex)(&input_dev->mutex);
 
 		if (input_device_enabled(input_dev))
 			pmic8xxx_kp_enable(kp);
-
-		mutex_unlock(&input_dev->mutex);
 	}
 
 	return 0;