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Commit 9961dbcd authored by Wolfram Sang's avatar Wolfram Sang Committed by Linus Walleij
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Documentation: gpio: correct return value of gpiod_get_direction 



The use of the GPIOF_* flags is deprecated, so don't advertise them
here. Document the plain numbers for now until we have a better
solution.

Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 94fc7309

Documentation/gpio/consumer.txt

+1 −1
Original line number Diff line number Diff line
@@ -184,7 +184,7 @@ A driver can also query the current direction of a GPIO: 


	int gpiod_get_direction(const struct gpio_desc *desc)



This function will return either GPIOF_DIR_IN or GPIOF_DIR_OUT.

This function returns 0 for output, 1 for input, or an error code in case of error.



Be aware that there is no default direction for GPIOs. Therefore, **using a GPIO

without setting its direction first is illegal and will result in undefined