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Wed, 22 Oct 2025 06:41:16 -0700 (PDT) From: Bartosz Golaszewski Date: Wed, 22 Oct 2025 15:41:03 +0200 Subject: [PATCH v2 4/9] gpio: swnode: don't use the swnode's name as the key for GPIO lookup 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: <20251022-reset-gpios-swnodes-v2-4-69088530291b@linaro.org> References: <20251022-reset-gpios-swnodes-v2-0-69088530291b@linaro.org> In-Reply-To: <20251022-reset-gpios-swnodes-v2-0-69088530291b@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/ZANAwAKARGnLqAUcddyAcsmYgBo+N7zN9M1F6+4W/2WiZN30Pc19ffcx3bG0PGon jferVnkFZGJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCaPje8wAKCRARpy6gFHHX crbjEADRzMnnMUvUDGxPFquwAawTcGYdsAROSzDL8Hjb3McdgxFrLrM4VxiTYVIV6UQOECIo4of bYwC/B/dsBs1Wpwuk1R0B+4axozYKb43/odBDt6YX0vD8p/5aKc5liBbPWhr8wT4xqHsf/HVDEb trKeSG4W6WFkHcaxXdhql7jNUX2dr7Qxnif77badixcUQiUo7q2Hq8k9d4X9maW3/hqdXqi0jX/ ds1Nwf+sa8fzOmWdQXGFbV6j+G8uzJKpM6T1a4mAsIgy2FbVZpuvTaBz9rRNUkGD87VwUam8sou biE6gUrd/l9UAWIfXTXesmxNfAmTpj83RO8m8ifqP9lree2muENZiae2m1wYYGmOb9JsgacVMp2 oFJ92Kjv1k+ZYVTrtejwxhboPJODsF8ns0sCz4nDmwVPEYHyT7DRLJGLIbx4UbM52m3Cftf4V1Z ETZedSDcFXVKJ7gtB5C3MmdoYrP2mrIXZgtYWloN7XxRhAqNUaVSurW/mCQrF5pDoTAW83r6oc8 5J573jK0TIE0P57RjVYLtTRIaPtjohoUJUatgKAmVlA/91fu4VnD5GXH9NXc9c0hgQRtsXZpVK+ sf5J5Xl7Exdoy8Z+lDl+L12ndos96H1PRmS2lA59Gsu5ZEHgpZ+Smp1fxX5UrZZxTD13D+Mgtqb 9h4XB0oRz7I4zew== 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..573b5216cfda105bafa58e04fc5= ad3a38d283698 100644 --- a/drivers/gpio/gpiolib-swnode.c +++ b/drivers/gpio/gpiolib-swnode.c @@ -7,6 +7,7 @@ =20 #define pr_fmt(fmt) "gpiolib: swnode: " fmt =20 +#include #include #include #include @@ -26,23 +27,20 @@ =20 static struct gpio_device *swnode_get_gpio_device(struct fwnode_handle *fw= node) { - const struct software_node *gdev_node; - struct gpio_device *gdev; - - gdev_node =3D to_software_node(fwnode); - if (!gdev_node || !gdev_node->name) - return ERR_PTR(-EINVAL); + struct gpio_device *gdev __free(gpio_device_put) =3D + gpio_device_find_by_fwnode(fwnode); + if (!gdev) + return ERR_PTR(-EPROBE_DEFER); =20 /* * 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); =20 - gdev =3D gpio_device_find_by_label(gdev_node->name); - return gdev ?: ERR_PTR(-EPROBE_DEFER); + return no_free_ptr(gdev); } =20 static int swnode_gpio_get_reference(const struct fwnode_handle *fwnode, --=20 2.48.1