From 9961dbcd228e868224f5f725dfae69de739855dc Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Tue, 9 Jan 2018 12:35:54 +0100 Subject: 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: Wolfram Sang Signed-off-by: Linus Walleij --- Documentation/gpio/consumer.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'Documentation/gpio') diff --git a/Documentation/gpio/consumer.txt b/Documentation/gpio/consumer.txt index 63e1bd1d88e3..7aac33081510 100644 --- a/Documentation/gpio/consumer.txt +++ b/Documentation/gpio/consumer.txt @@ -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 -- cgit