[PATCH] gpio: xgs-iproc: fix parsing of ngpios property

[Bartosz Golaszewski]

On Thu, Oct 14, 2021 at 2:33 PM Jonas Gorski <jonas.gorski at gmail.com> wrote:
>
> of_property_read_u32 returns 0 on success, not true, so we need to
> invert the check to actually take over the provided ngpio value.
>
> Fixes: 6a41b6c5fc20 ("gpio: Add xgs-iproc driver")
> Signed-off-by: Jonas Gorski <jonas.gorski at gmail.com>
> ---
> This is based on
> git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git,
> which is the tree for GPIO according to MAINTAINERS, but hasn't been
> updated since ~5.11 - is this still the correct tree?
>
> It doesn't matter much for this patch though, the driver is virtually
> untouched since then.
>
>  drivers/gpio/gpio-xgs-iproc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpio/gpio-xgs-iproc.c b/drivers/gpio/gpio-xgs-iproc.c
> index ad5489a65d54..dd40277b9d06 100644
> --- a/drivers/gpio/gpio-xgs-iproc.c
> +++ b/drivers/gpio/gpio-xgs-iproc.c
> @@ -224,7 +224,7 @@ static int iproc_gpio_probe(struct platform_device *pdev)
>         }
>
>         chip->gc.label = dev_name(dev);
> -       if (of_property_read_u32(dn, "ngpios", &num_gpios))
> +       if (!of_property_read_u32(dn, "ngpios", &num_gpios))
>                 chip->gc.ngpio = num_gpios;
>
>         irq = platform_get_irq(pdev, 0);
> --
> 2.33.0
>

Queued for fixes.

Bart