[freescale-fslc:6.1-1.0.x-imx 1061/9879] drivers/gpu/drm/imx/dcss/dcss-rdsrc.c:86:13: warning: variable 'buf_size' set but not used

[freescale-fslc:6.1-1.0.x-imx 1061/9879] drivers/gpu/drm/imx/dcss/dcss-rdsrc.c:86:13: warning: variable 'buf_size' set but not used

[kernel test robot]

tree:   https://github.com/Freescale/linux-fslc 6.1-1.0.x-imx
head:   ad9ab3b3c553cbc3c61f233b6e2cd5abdd2a624b
commit: 8d181fada260045dcc130d3b82e9e49f37f60dd6 [1061/9879] drm/imx/dcss: add WRSCL/RDSRC support
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20230527/202305271311.jsdNHHt2-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        mkdir -p ~/bin
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/Freescale/linux-fslc/commit/8d181fada260045dcc130d3b82e9e49f37f60dd6
        git remote add freescale-fslc https://github.com/Freescale/linux-fslc
        git fetch --no-tags freescale-fslc 6.1-1.0.x-imx
        git checkout 8d181fada260045dcc130d3b82e9e49f37f60dd6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 ~/bin/make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 ~/bin/make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305271311.jsdNHHt2-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/imx/dcss/dcss-rdsrc.c: In function 'dcss_rdsrc_setup':
>> drivers/gpu/drm/imx/dcss/dcss-rdsrc.c:86:13: warning: variable 'buf_size' set but not used [-Wunused-but-set-variable]
      86 |         u32 buf_size, pitch, bpp;
         |             ^~~~~~~~


vim +/buf_size +86 drivers/gpu/drm/imx/dcss/dcss-rdsrc.c

    82	
    83	void dcss_rdsrc_setup(struct dcss_rdsrc *rdsrc, u32 pix_format, u32 dst_xres,
    84			      u32 dst_yres, u32 base_addr)
    85	{
  > 86		u32 buf_size, pitch, bpp;
    87	
    88		/* since the scaler output is YUV444, the RDSRC output has to match */
    89		bpp = 4;
    90	
    91		rdsrc->ctrl_status = FIFO_512 << RDSRC_FIFO_SIZE_POS;
    92		rdsrc->ctrl_status |= PSIZE_256 << RDSRC_P_SIZE_POS;
    93		rdsrc->ctrl_status |= TSIZE_256 << RDSRC_T_SIZE_POS;
    94		rdsrc->ctrl_status |= BPP_32_10BIT_OUTPUT << RDSRC_BPP_POS;
    95	
    96		buf_size = dst_xres * dst_yres * bpp;
    97		pitch = dst_xres * bpp;
    98	
    99		rdsrc->buf_addr = base_addr;
   100	
   101		dcss_rdsrc_write(rdsrc, rdsrc->buf_addr, DCSS_RDSRC_BASE_ADDR);
   102		dcss_rdsrc_write(rdsrc, pitch, DCSS_RDSRC_PITCH);
   103		dcss_rdsrc_write(rdsrc, dst_xres, DCSS_RDSRC_WIDTH);
   104		dcss_rdsrc_write(rdsrc, dst_yres, DCSS_RDSRC_HEIGHT);
   105	}
   106	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki