On Wed, Nov 19, 2014 at 5:55 PM, Janusz Uzycki [off-list ref] wrote:

gpiolib's gpiod_get_direction() function returns the EINVAL error
if .get_direction callback is not defined.
The patch implements the callback for mxs chip which is useful
for debugging.

Inspired by arch/arm/mach-at91/gpio.c

Signed-off-by: Janusz Uzycki <redacted>

Acked-by: Alexandre Courbot <acourbot@nvidia.com>