[drm-misc:drm-misc-next 3/7] drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:249:12: warning: 'ret' is used uninitialized

[kernel test robot]

tree:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
head:   852be13f3bd32c1eab808840cfac41b1fea25991
commit: 9402cde9347eca050e14ea9e47270e84a6899162 [3/7] drm/panel: vtdr6130: Use 16-bit brightness function
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230119/202301191956.s3AcGxpU-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add drm-misc git://anongit.freedesktop.org/drm/drm-misc
        git fetch --no-tags drm-misc drm-misc-next
        git checkout 9402cde9347eca050e14ea9e47270e84a6899162
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc SHELL=/bin/bash drivers/gpu/drm/panel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/panel/panel-visionox-vtdr6130.c: In function 'visionox_vtdr6130_bl_update_status':
>> drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:249:12: warning: 'ret' is used uninitialized [-Wuninitialized]
     249 |         if (ret < 0)
         |            ^
   drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:246:13: note: 'ret' was declared here
     246 |         int ret;
         |             ^~~


vim +/ret +249 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c

2349183d32d83a Neil Armstrong 2023-01-09  241  
2349183d32d83a Neil Armstrong 2023-01-09  242  static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl)
2349183d32d83a Neil Armstrong 2023-01-09  243  {
2349183d32d83a Neil Armstrong 2023-01-09  244  	struct mipi_dsi_device *dsi = bl_get_data(bl);
2349183d32d83a Neil Armstrong 2023-01-09  245  	u16 brightness = backlight_get_brightness(bl);
2349183d32d83a Neil Armstrong 2023-01-09  246  	int ret;
2349183d32d83a Neil Armstrong 2023-01-09  247  
9402cde9347eca Richard Acayan 2023-01-16  248  	mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
2349183d32d83a Neil Armstrong 2023-01-09 @249  	if (ret < 0)
2349183d32d83a Neil Armstrong 2023-01-09  250  		return ret;
2349183d32d83a Neil Armstrong 2023-01-09  251  
2349183d32d83a Neil Armstrong 2023-01-09  252  	return 0;
2349183d32d83a Neil Armstrong 2023-01-09  253  }
2349183d32d83a Neil Armstrong 2023-01-09  254  

:::::: The code at line 249 was first introduced by commit
:::::: 2349183d32d83a7635baa804934813bcad13fd62 drm/panel: add visionox vtdr6130 DSI panel driver

:::::: TO: Neil Armstrong <neil.armstrong at linaro.org>
:::::: CC: Neil Armstrong <neil.armstrong at linaro.org>

-- 
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