linux-kernel - Re: [PATCH] gpio: gpio-amd-fch: Correct logic of GPIO_LINE

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Message-ID: <CAMpxmJV0jwLAn3Xee_3zDiF_DQF-8uy52qxU1WAbr9xiVb0WLQ@mail.gmail.com>
Date:   Thu, 24 Sep 2020 15:29:27 +0200
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Ed Wildgoose <lists@...dgooses.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, fe@....tdt.de,
        "Enrico Weigelt, metux IT consult" <info@...ux.net>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH] gpio: gpio-amd-fch: Correct logic of GPIO_LINE_DIRECTION

On Sun, Sep 20, 2020 at 10:34 PM Ed Wildgoose <lists@...dgooses.com> wrote:
>
> The original commit appears to have the logic reversed in
> amd_fch_gpio_get_direction. Also confirmed by observing the value of
> "direction" in the sys tree.
>
> Signed-off-by: Ed Wildgoose <lists@...dgooses.com>
> ---
>  drivers/gpio/gpio-amd-fch.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpio/gpio-amd-fch.c b/drivers/gpio/gpio-amd-fch.c
> index 4e44ba4d7..2a21354ed 100644
> --- a/drivers/gpio/gpio-amd-fch.c
> +++ b/drivers/gpio/gpio-amd-fch.c
> @@ -92,7 +92,7 @@ static int amd_fch_gpio_get_direction(struct gpio_chip *gc, unsigned int gpio)
>         ret = (readl_relaxed(ptr) & AMD_FCH_GPIO_FLAG_DIRECTION);
>         spin_unlock_irqrestore(&priv->lock, flags);
>
> -       return ret ? GPIO_LINE_DIRECTION_IN : GPIO_LINE_DIRECTION_OUT;
> +       return ret ? GPIO_LINE_DIRECTION_OUT : GPIO_LINE_DIRECTION_IN;
>  }
>
>  static void amd_fch_gpio_set(struct gpio_chip *gc,
> --
> 2.26.2
>

Can you add a Fixes tag with the original commit?

Bartosz