From: Linus Walleij Date: Thu, 4 Jan 2018 21:31:11 +0000 (+0100) Subject: gpio: label descriptors using the device name X-Git-Tag: v4.4.128~100 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a60a3a280f58dd4d25bc0f2e0a503731734fc052;p=profile%2Fcommon%2Fplatform%2Fkernel%2Flinux-artik7.git gpio: label descriptors using the device name [ 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 Reported-by: Jason Kridner Signed-off-by: Linus Walleij Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 06d345b..759a399 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -2145,7 +2145,8 @@ 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);