Re: [PATCH] input: gpio_keys_polled: Correct check for invalid gpiod

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

On Fri, Feb 19, 2016 at 10:58 AM, Geert Uytterhoeven
<geert+renesas@xxxxxxxxx> wrote:
> At this point in gpio_keys_polled_probe(), button->gpiod contains either
> a pointer to a GPIO descriptor or NULL, because:
>   - gpio_keys_polled_get_devtree_pdata() fills in button->gpiod only if
>     devm_get_gpiod_from_child() succeeded,
>   - gpio_to_desc() returns NULL on failure, not an ERR_PTR(),
>   - button->gpiod is untouched if it was NULL, and button->gpio is not
>     valid.
>
> Hence check for NULL only, and return -EINVAL on failure.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Sorry, scratch this, sent to wrong audience.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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                                -- Linus Torvalds
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