linux-kernel - Re: [PATCH] rtc: m41t80: fix fall-through annotation

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Message-ID: <20181004125331.GR4088@piout.net>
Date:   Thu, 4 Oct 2018 14:53:31 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Alessandro Zummo <a.zummo@...ertech.it>, linux-rtc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtc: m41t80: fix fall-through annotation

Hi,

On 04/10/2018 14:35:28+0200, Gustavo A. R. Silva wrote:
> Replace "Fall" with a proper "Fall through" annotation.
> 
> This fix is part of the ongoing efforts to enabling
> -Wimplicit-fallthrough
> 

Can we agree that this is absolutely not a fix? I don't wan't to have
that needlessly backport on gazillion stable kernel.

> Addresses-Coverity-ID: 1373875 ("Missing break in switch")
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> ---
>  drivers/rtc/rtc-m41t80.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
> index ad03e2f..a3fb235 100644
> --- a/drivers/rtc/rtc-m41t80.c
> +++ b/drivers/rtc/rtc-m41t80.c
> @@ -745,7 +745,7 @@ static int wdt_ioctl(struct file *file, unsigned int cmd,
>  			return -EINVAL;
>  		wdt_margin = new_margin;
>  		wdt_ping();
> -		/* Fall */
> +		/* Fall through */
>  	case WDIOC_GETTIMEOUT:
>  		return put_user(wdt_margin, (int __user *)arg);
>  
> -- 
> 2.7.4
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com