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