Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
MIME-Version: 1.0
References: <CAMpxmJV0jwLAn3Xee_3zDiF_DQF-8uy52qxU1WAbr9xiVb0WLQ@mail.gmail.com>
 <20200928094452.7005-1-lists@wildgooses.com>
In-Reply-To: <20200928094452.7005-1-lists@wildgooses.com>
From:   Bartosz Golaszewski <bgolaszewski@baylibre.com>
Date:   Mon, 28 Sep 2020 12:23:45 +0200
Message-ID: <CAMpxmJXv5+hegJX_m5Pw72O9Fiez++ELN6EqSP0MiPyrcm79Kw@mail.gmail.com>
Subject: Re: [PATCH] gpio: gpio-amd-fch: Correct logic of GPIO_LINE_DIRECTION
To:     Ed Wildgoose <lists@wildgooses.com>
Cc:     fe@dev.tdt.de, "Enrico Weigelt, metux IT consult" <info@metux.net>,
        Linus Walleij <linus.walleij@linaro.org>,
        linux-gpio <linux-gpio@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Mon, Sep 28, 2020 at 11:45 AM Ed Wildgoose <lists@wildgooses.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@wildgooses.com>
> Fixes: e09d168f13f0 ("gpio: AMD G-Series PCH gpio driver")
> ---
>  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
>

Queued for fixes, thanks!

Bartosz