linux-kernel - [PATCH] gpio: pisosr: Use devm_mutex

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Message-ID: <01910ebdaba7d8d0cdc4ac60eb70da8e29cb85f1.1757251512.git.christophe.jaillet@wanadoo.fr>
Date: Sun,  7 Sep 2025 15:25:38 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Linus Walleij <linus.walleij@...aro.org>,
	Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	linux-gpio@...r.kernel.org
Subject: [PATCH] gpio: pisosr: Use devm_mutex_init()

Use devm_mutex_init() instead of hand-writing it.

This saves some LoC, improves readability and saves some space in the
generated .o file.

Before:
======
   text	   data	    bss	    dec	    hex	filename
   8431	   1808	    192	  10431	   28bf	drivers/gpio/gpio-pisosr.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   8112	   1736	    192	  10040	   2738	drivers/gpio/gpio-pisosr.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/gpio/gpio-pisosr.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/gpio/gpio-pisosr.c b/drivers/gpio/gpio-pisosr.c
index a69b74866a13..7ec6a46ed600 100644
--- a/drivers/gpio/gpio-pisosr.c
+++ b/drivers/gpio/gpio-pisosr.c
@@ -108,11 +108,6 @@ static const struct gpio_chip template_chip = {
 	.can_sleep		= true,
 };
 
-static void pisosr_mutex_destroy(void *lock)
-{
-	mutex_destroy(lock);
-}
-
 static int pisosr_gpio_probe(struct spi_device *spi)
 {
 	struct device *dev = &spi->dev;
@@ -139,8 +134,7 @@ static int pisosr_gpio_probe(struct spi_device *spi)
 		return dev_err_probe(dev, PTR_ERR(gpio->load_gpio),
 				     "Unable to allocate load GPIO\n");
 
-	mutex_init(&gpio->lock);
-	ret = devm_add_action_or_reset(dev, pisosr_mutex_destroy, &gpio->lock);
+	ret = devm_mutex_init(dev, &gpio->lock);
 	if (ret)
 		return ret;
 
-- 
2.51.0