redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

gpio: label descriptors using the device name 

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>
hifive-unleashed-5.1
Linus Walleij 2018-01-04 22:31:11 +01:00
parent 088413bc0b
commit 24e78079bf
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpio/gpiolib.c
View File

@ -3650,7 +3650,8 @@ 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);