4.4-stable review patch. If anyone has any objections, please let me know.
From: Linus Walleij <linus.wall...@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 <jkrid...@beagleboard.org>
Reported-by: Jason Kridner <jkrid...@beagleboard.org>
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
drivers/gpio/gpiolib.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
@@ -2145,7 +2145,8 @@ struct gpio_desc *__must_check gpiod_get
- 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)