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Mon, 06 Oct 2025 06:00:39 -0700 (PDT) From: Bartosz Golaszewski Date: Mon, 06 Oct 2025 15:00:19 +0200 Subject: [PATCH 4/9] gpio: swnode: don't use the swnode's name as the key for GPIO lookup Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251006-reset-gpios-swnodes-v1-4-6d3325b9af42@linaro.org> References: <20251006-reset-gpios-swnodes-v1-0-6d3325b9af42@linaro.org> In-Reply-To: <20251006-reset-gpios-swnodes-v1-0-6d3325b9af42@linaro.org> To: Linus Walleij , Bartosz Golaszewski , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , Philipp Zabel , Krzysztof Kozlowski Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1995; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=j0RRfSQSsKVGeiwXPp8qsWRU8zLDV2TSTGFBIXN+YdY=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBo471wtB/HnaJ+O09mQ+9lgzCae0qQw32NwTefs jSgoICyADGJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCaOO9cAAKCRARpy6gFHHX ctnHD/4+TTw++elPkjzjI+nwSVBBsHusvZ7gjWSbofVCsBjApKaJ9Jkxm8Nlj/uyMBJ4WBQwwNo hpq036tS1eW5uIhf3nUOQ1tTJ9a0Z0LBUE7Vp7/Xsul0r6BB1JGZuW6MKXsSi160DQn/i0NK4RZ PvMLswbpfF/6d1JlYrD2l7+aBNwx6qG4sDt7HAdVoA4opQqYU1GE2zbOLFylFdVcPTKoypmVM5R YtUytXE52w8c00pwe8sZKJs8RHpz/6m8Rxe1YyH9Bt4X7BrAxxqJbaPNDXyrdew34ShdrpxnHrC ePzLlLx9GPkLxLG+GB8JjySOlClZyiqDzWH7F6XxWLjXm+mVS7X4AwvoN9JAZyRdZPDE6K5Acyv 36sD88S8vx1ACVfqhh5OosZZJdyT2cdp+3+jlhQpGh74rLJomPs/67Xw8lagwFNwwnMF7H4VCXg m0qRihA289PN8TWMEF2feUNL5em0YXu3yRgf4OA1h90O2oxbJt/jVl3DH0CJb7hnXzbHfkhsaXE gVpBsfy6W+IOhPurkNZmV14obSmYS9RE9FA+tDi84Hi5VKn77gK3hZryWIJWEs+97srDMd17fan dyHc7gZalByu7pstT5/2NsYlFvSM+O+G7/QHZuUTuLLGzB6UXoI/FLDPiJXZLo0cNMBb0oG37rb Bj5vwuIyKtX6u+A== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski Looking up a GPIO controller by label that is the name of the software node is wonky at best - the GPIO controller driver is free to set a different label than the name of its firmware node. We're already being passed a firmware node handle attached to the GPIO device to swnode_get_gpio_device() so use it instead for a more precise lookup. Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpiolib-swnode.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/gpio/gpiolib-swnode.c b/drivers/gpio/gpiolib-swnode.c index f21dbc28cf2c8c2d06d034b7c89d302cc52bb9b5..573b5216cfda105bafa58e04fc5ad3a38d283698 100644 --- a/drivers/gpio/gpiolib-swnode.c +++ b/drivers/gpio/gpiolib-swnode.c @@ -7,6 +7,7 @@ #define pr_fmt(fmt) "gpiolib: swnode: " fmt +#include #include #include #include @@ -26,23 +27,20 @@ static struct gpio_device *swnode_get_gpio_device(struct fwnode_handle *fwnode) { - const struct software_node *gdev_node; - struct gpio_device *gdev; - - gdev_node = to_software_node(fwnode); - if (!gdev_node || !gdev_node->name) - return ERR_PTR(-EINVAL); + struct gpio_device *gdev __free(gpio_device_put) = + gpio_device_find_by_fwnode(fwnode); + if (!gdev) + return ERR_PTR(-EPROBE_DEFER); /* * Check for a special node that identifies undefined GPIOs, this is * primarily used as a key for internal chip selects in SPI bindings. */ if (IS_ENABLED(CONFIG_GPIO_SWNODE_UNDEFINED) && - !strcmp(gdev_node->name, GPIOLIB_SWNODE_UNDEFINED_NAME)) + !strcmp(fwnode_get_name(fwnode), GPIOLIB_SWNODE_UNDEFINED_NAME)) return ERR_PTR(-ENOENT); - gdev = gpio_device_find_by_label(gdev_node->name); - return gdev ?: ERR_PTR(-EPROBE_DEFER); + return no_free_ptr(gdev); } static int swnode_gpio_get_reference(const struct fwnode_handle *fwnode, -- 2.48.1