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Wed, 23 Apr 2025 00:15:18 -0700 (PDT) From: Bartosz Golaszewski Date: Wed, 23 Apr 2025 09:15:04 +0200 Subject: [PATCH 02/12] gpio: imx-scu: use lock guards Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250423-gpiochip-set-rv-gpio-part2-v1-2-b22245cde81a@linaro.org> References: <20250423-gpiochip-set-rv-gpio-part2-v1-0-b22245cde81a@linaro.org> In-Reply-To: <20250423-gpiochip-set-rv-gpio-part2-v1-0-b22245cde81a@linaro.org> To: Linus Walleij , Bartosz Golaszewski , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Lixu Zhang , Sakari Ailus , Yinbo Zhu Cc: linux-gpio@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1992; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=MkOnT4yNUZeyHThpCK5EaJBEstX46Cy8bj/Sje8L+og=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBoCJOBKq6/ZTVbZPDWRuhYrH8TZUsVagJXdkY5i QrnwxvwAYeJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCaAiTgQAKCRARpy6gFHHX ckEeD/9l4SbUhQKoQaEIERaYqDCzXTHhqB5KuenMgC5r/g5sYiqxqQjudVfEJavtD4haF+6aS9o xBIvX9GLhKUl5ZIikmZsrdlMshgyIY28XvfD/BydQE7ZJUgLGaEW4ZjytZz1E/tb5W1O/0WR0NY hshNdM49zRWRWZX1Nj4xFECkTnuriQt6vmLJPjpTRc9vO6lI6hRu44vwjuC1+TrsGWo8E6drr5H shZ1C+A2LYp6h2edfZQsuuJb5IDheLLXrvKO4LqnN15DZFRU6Y6wTy/WreZUw6PZm7I0cUftKdc 0ScZ/KPtiTI0XPv3J5Q/skCvJBb8trn1KYQCEEo4Mr2kmHiKvQbTocvrnd9vHZm6iiCV9DUqHgE tZMYBL/xY6sxHdGwez2RZp3AwIv45VDRo9qEEPgDwPAjZSPISB9pOVdqLbIcTQqz4dAWvTiPBb2 tlYO46y6cpcw+IgSpYcXNJJR69S76gYbbfqTlXnIbrvHyPBN/aFH/dMKoKT5FPIz1PhwVILoE2Y 6dyGGas9foRrvCR4ndO+4uzKrs8XDjvws3vVumzhIUtsJ0W7NHvpiVOHfg7OW3efAMUSP8oyphB byaiS/R0pIxiZ+DHEKog1C2cE0qzDut0dyfGx+V+wagrqQ3BRdYAo1aT06StAe6hSgK/ej4OGdU +WVTqdlbOWnq5cw== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski Simplify the code by using lock guards from cleanup.h with the driver's mutex. Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpio-imx-scu.c | 26 ++++++++++++-------------- 1 file changed, 12 insertions(+), 14 deletions(-) diff --git a/drivers/gpio/gpio-imx-scu.c b/drivers/gpio/gpio-imx-scu.c index 403d03f18122..99df95e65820 100644 --- a/drivers/gpio/gpio-imx-scu.c +++ b/drivers/gpio/gpio-imx-scu.c @@ -6,8 +6,10 @@ * to control the PIN resources on SCU domain. */ =20 +#include #include #include +#include #include #include #include @@ -37,13 +39,11 @@ static int imx_scu_gpio_get(struct gpio_chip *chip, uns= igned int offset) int level; int err; =20 - mutex_lock(&priv->lock); - - /* to read PIN state via scu api */ - err =3D imx_sc_misc_get_control(priv->handle, - scu_rsrc_arr[offset], 0, &level); - mutex_unlock(&priv->lock); - + scoped_guard(mutex, &priv->lock) { + /* to read PIN state via scu api */ + err =3D imx_sc_misc_get_control(priv->handle, + scu_rsrc_arr[offset], 0, &level); + } if (err) { dev_err(priv->dev, "SCU get failed: %d\n", err); return err; @@ -57,13 +57,11 @@ static void imx_scu_gpio_set(struct gpio_chip *chip, un= signed int offset, int va struct scu_gpio_priv *priv =3D gpiochip_get_data(chip); int err; =20 - mutex_lock(&priv->lock); - - /* to set PIN output level via scu api */ - err =3D imx_sc_misc_set_control(priv->handle, - scu_rsrc_arr[offset], 0, value); - mutex_unlock(&priv->lock); - + scoped_guard(mutex, &priv->lock) { + /* to set PIN output level via scu api */ + err =3D imx_sc_misc_set_control(priv->handle, + scu_rsrc_arr[offset], 0, value); + } if (err) dev_err(priv->dev, "SCU set (%d) failed: %d\n", scu_rsrc_arr[offset], err); --=20 2.45.2