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gpio: label descriptors using the device name
[ Upstream commit 24e78079bf
]
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>
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1 changed files with 2 additions and 1 deletions
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@ -3231,7 +3231,8 @@ struct gpio_desc *__must_check gpiod_get_index(struct device *dev,
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return desc;
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}
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status = gpiod_request(desc, con_id);
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/* If a connection label was passed use that, else use the device name as label */
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status = gpiod_request(desc, con_id ? con_id : dev_name(dev));
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if (status < 0)
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return ERR_PTR(status);
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