Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL for 4.9 143/281] gpio: label descriptors using the device name | Date | Mon, 19 Mar 2018 16:00:42 +0000 |
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From: Linus Walleij <linus.walleij@linaro.org>
[ Upstream commit 24e78079bf2250874e33da2e7cfbb6db72d3caf4 ]
Some GPIO lines appear named "?" in the lsgpio dump due to their requesting drivers not passing a reasonable label.
Most typically this happens if a device tree node just defines gpios = <...> and not foo-gpios = <...>, the former gets named "foo" and the latter gets named "?".
However the struct device passed in is always valid so let's just label the GPIO with dev_name() on the device if no proper label was passed.
Cc: Reported-by: Jason Kridner <jkridner@beagleboard.org> Reported-by: Jason Kridner <jkridner@beagleboard.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> --- drivers/gpio/gpiolib.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index f3c3680963b9..4f54ff45e09e 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3231,7 +3231,8 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev, return desc; } - status = gpiod_request(desc, con_id); + /* If a connection label was passed use that, else use the device name as label */ + status = gpiod_request(desc, con_id ? con_id : dev_name(dev)); if (status < 0) return ERR_PTR(status); -- 2.14.1
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