Re: [PATCH] gpiolib: Fix gpio_direction_* for single direction GPIOs

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

Hi Ricardo,

thanks for the patch and sorry for taking time before responding.

On Fri, Sep 21, 2018 at 12:36 PM Ricardo Ribalda Delgado
<ricardo.ribalda@xxxxxxxxx> wrote:
> GPIOs with no programmable direction are not required to implement
> direction_output nor direction_input.
>
> If we try to set an output direction on an output-only GPIO or input
> direction on an input-only GPIO simply return 0.
>
> This allows this single direction GPIO to be used by libgpiod.
>
> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>

It makes perfect sense, patch applied.

I'll go in and add some comments to the code so I understand it
right as well in the future.

Yours,
Linus Walleij