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Date:   Tue, 1 Dec 2020 15:50:12 +0100
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Alban Bedel <albeu@...e.fr>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-gpio <linux-gpio@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] gpio: ath79: Fix fall-through warning for Clang

On Thu, Nov 19, 2020 at 6:08 PM Gustavo A. R. Silva
<gustavoars@...nel.org> wrote:
>
> In preparation to enable -Wimplicit-fallthrough for Clang, fix a
> warning by explicitly adding a fallthrough pseudo-keyword to indicate
> that the code is intended to fall through to the next case.
>
> Link: https://github.com/KSPP/linux/issues/115
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> ---
>  drivers/gpio/gpio-ath79.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpio/gpio-ath79.c b/drivers/gpio/gpio-ath79.c
> index d5359341cc6b..678ddd375891 100644
> --- a/drivers/gpio/gpio-ath79.c
> +++ b/drivers/gpio/gpio-ath79.c
> @@ -123,6 +123,7 @@ static int ath79_gpio_irq_set_type(struct irq_data *data,
>         switch (flow_type) {
>         case IRQ_TYPE_EDGE_RISING:
>                 polarity |= mask;
> +               fallthrough;
>         case IRQ_TYPE_EDGE_FALLING:
>         case IRQ_TYPE_EDGE_BOTH:
>                 break;
> --
> 2.27.0
>

Applied, thanks!

Bartosz

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