Messages in this thread Patch in this message | | | From | Ricardo Ribalda Delgado <> | Subject | [PATCH] gpiolib: Show correct direction from the beginning | Date | Fri, 14 Sep 2018 09:08:39 +0200 |
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Current code assumes that the direction is input if direction_input function is set. This might not be the case on GPIOs with programmable direction.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> --- drivers/gpio/gpiolib.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index a57300c1d649..af853749e0bb 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1352,7 +1352,12 @@ int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data, * it does, and in case chip->get_direction is not set, we may * expose the wrong direction in sysfs. */ - desc->flags = !chip->direction_input ? (1 << FLAG_IS_OUT) : 0; + if (chip->get_direction) + desc->flags = !chip->get_direction(chip, i) ? + (1 << FLAG_IS_OUT) : 0; + else + desc->flags = !chip->direction_input ? + (1 << FLAG_IS_OUT) : 0; } #ifdef CONFIG_PINCTRL -- 2.18.0
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