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| author | Linus Walleij <linus.walleij@linaro.org> | 2018-01-04 22:31:11 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 19:50:14 +0200 |
| commit | a60a3a280f58dd4d25bc0f2e0a503731734fc052 (patch) | |
| tree | 89d9f99aeb6a217e63241d43bad74ab8ff3dae53 /drivers/gpio | |
| parent | a10b85649aada90807e3a53b3a5d669479196ff7 (diff) | |
| download | linux-stable-a60a3a280f58dd4d25bc0f2e0a503731734fc052.tar.gz linux-stable-a60a3a280f58dd4d25bc0f2e0a503731734fc052.tar.bz2 linux-stable-a60a3a280f58dd4d25bc0f2e0a503731734fc052.zip | |
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 <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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 06d345b087f8..759a39906a52 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); |