linux-kernel - Re: [PATCH][next] watchdog: scx200_wdt: Use fallthrough pseudo-keyword

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Message-ID: <3f95aa68-cd5b-2942-5eed-c29494ae8068@roeck-us.net>
Date:   Fri, 17 Jul 2020 12:33:31 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Jim Cromie <jim.cromie@...il.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>
Cc:     linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: Re: [PATCH][next] watchdog: scx200_wdt: Use fallthrough
 pseudo-keyword

On 7/17/20 9:40 AM, Gustavo A. R. Silva wrote:
> Replace the existing /* fall through */ comments and its variants with
> the new pseudo-keyword macro fallthrough[1].
> 
> [1] https://www.kernel.org/doc/html/v5.7-rc7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
> 
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
>  drivers/watchdog/scx200_wdt.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/watchdog/scx200_wdt.c b/drivers/watchdog/scx200_wdt.c
> index c94098acb78f..7b5e18323f3f 100644
> --- a/drivers/watchdog/scx200_wdt.c
> +++ b/drivers/watchdog/scx200_wdt.c
> @@ -186,7 +186,7 @@ static long scx200_wdt_ioctl(struct file *file, unsigned int cmd,
>  		margin = new_margin;
>  		scx200_wdt_update_margin();
>  		scx200_wdt_ping();
> -		/* Fall through */
> +		fallthrough;
>  	case WDIOC_GETTIMEOUT:
>  		if (put_user(margin, p))
>  			return -EFAULT;
>