linux-kernel - Re: [PATCH v2] staging: atomisp: Remove unnecessary 'fallthrough'

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Date:   Mon, 31 Aug 2020 09:28:48 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Cengiz Can <cengiz@...nel.wtf>
Cc:     dan.carpenter@...cle.com, andriy.shevchenko@...ux.intel.com,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        linux-media@...r.kernel.org, mchehab@...nel.org,
        sakari.ailus@...ux.intel.com
Subject: Re: [PATCH v2] staging: atomisp: Remove unnecessary 'fallthrough'

On Mon, Aug 31, 2020 at 04:51:04PM +0300, Cengiz Can wrote:
> commit df561f6688fe ("treewide: Use fallthrough pseudo-keyword") from
> Gustavo A. R. Silva replaced and standardized /* fallthrough */ comments
> with 'fallthrough' pseudo-keyword.
> 
> However, in one of the switch-case statements, Coverity Static Analyzer
> throws a warning that 'fallthrough' is unreachable due to the adjacent
> 'return false' statement. (Coverity ID CID 1466511)
> 
> In order to fix the unreachable code warning, remove unnecessary
> fallthrough keyword.
> 
> Signed-off-by: Cengiz Can <cengiz@...nel.wtf>

Reviewed-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Thanks
--
Gustavo

> ---
>  drivers/staging/media/atomisp/pci/atomisp_compat_css20.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> index 1b2b2c68025b..feb26c221e96 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> @@ -711,7 +711,6 @@ static bool is_pipe_valid_to_current_run_mode(struct atomisp_sub_device *asd,
>  			return true;
>  
>  		return false;
> -		fallthrough;
>  	case ATOMISP_RUN_MODE_VIDEO:
>  		if (!asd->continuous_mode->val) {
>  			if (pipe_id == IA_CSS_PIPE_ID_VIDEO ||
> -- 
> 2.28.0
>