linux-kernel - Re: [PATCH 1/3] media: ipu3: drop an unused variable

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Date:   Fri, 12 Nov 2021 13:43:53 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Bingbu Cao <bingbu.cao@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Tianshu Qiu <tian.shu.qiu@...el.com>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
        linux-staging@...ts.linux.dev, llvm@...ts.linux.dev
Subject: Re: [PATCH 1/3] media: ipu3: drop an unused variable

On Thu, Nov 11, 2021 at 11:08:51PM +0000, Mauro Carvalho Chehab wrote:
> Fix this clang Werror with W=1:
> 
> 	drivers/staging/media/ipu3/ipu3-css-params.c:774:8: error: variable 'pin_scale' set but not used [-Werror,-Wunused-but-set-variable]
> 	                        int pin_scale = 0;
> 	                            ^
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

Reviewed-by: Nathan Chancellor <nathan@...nel.org>

> ---
> 
> To mailbombing on a large number of people, only mailing lists were C/C on the cover.
> See [PATCH 0/3] at: https://lore.kernel.org/all/cover.1636672052.git.mchehab+huawei@kernel.org/
> 
>  drivers/staging/media/ipu3/ipu3-css-params.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/staging/media/ipu3/ipu3-css-params.c b/drivers/staging/media/ipu3/ipu3-css-params.c
> index e9d6bd9e9332..d9e3c3785075 100644
> --- a/drivers/staging/media/ipu3/ipu3-css-params.c
> +++ b/drivers/staging/media/ipu3/ipu3-css-params.c
> @@ -771,7 +771,6 @@ static int imgu_css_osys_calc_frame_and_stripe_params(
>  		 */
>  		{
>  			unsigned int i;
> -			int pin_scale = 0;
>  			/*Input resolution */
>  
>  			stripe_params[s].input_width = stripe_input_width_y;
> @@ -791,8 +790,6 @@ static int imgu_css_osys_calc_frame_and_stripe_params(
>  						reso.pin_height[i];
>  					stripe_params[s].output_offset[i] =
>  						stripe_offset_out_y;
> -
> -					pin_scale += frame_params[i].scaled;
>  				} else {
>  					/* Unscaled pin */
>  					stripe_params[s].output_width[i] =
> -- 
> 2.33.1
> 
>