linux-kernel - [PATCH v1 1/3] gpio: pca9570: Use devm_mutex

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Message-ID: <20260113100913.136777-2-andriy.shevchenko@linux.intel.com>
Date: Tue, 13 Jan 2026 11:08:04 +0100
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Linus Walleij <linusw@...nel.org>,
	Bartosz Golaszewski <brgl@...nel.org>
Subject: [PATCH v1 1/3] gpio: pca9570: Use devm_mutex_init() for mutex initialization

Replace mutex_init() with the devm_mutex_init(), to ensure proper mutex
cleanup during probe failure and driver removal.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/gpio/gpio-pca9570.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-pca9570.c b/drivers/gpio/gpio-pca9570.c
index c5a1287079a0..eae35135c71e 100644
--- a/drivers/gpio/gpio-pca9570.c
+++ b/drivers/gpio/gpio-pca9570.c
@@ -115,7 +115,9 @@ static int pca9570_set(struct gpio_chip *chip, unsigned int offset, int value)
 
 static int pca9570_probe(struct i2c_client *client)
 {
+	struct device *dev = &client->dev;
 	struct pca9570 *gpio;
+	int ret;
 
 	gpio = devm_kzalloc(&client->dev, sizeof(*gpio), GFP_KERNEL);
 	if (!gpio)
@@ -132,7 +134,9 @@ static int pca9570_probe(struct i2c_client *client)
 	gpio->chip.ngpio = gpio->chip_data->ngpio;
 	gpio->chip.can_sleep = true;
 
-	mutex_init(&gpio->lock);
+	ret = devm_mutex_init(dev, &gpio->lock);
+	if (ret)
+		return ret;
 
 	/* Read the current output level */
 	pca9570_read(gpio, &gpio->out);
-- 
2.50.1