tree: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next head: 43bde505d66a41c2ad706d603e97b2c8aa2fbe4a commit: 9402cde9347eca050e14ea9e47270e84a6899162 [3/7] drm/panel: vtdr6130: Use 16-bit brightness function config: mips-randconfig-r031-20230119 (https://download.01.org/0day-ci/archive/20230120/202301200041.hwrKmLMy-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a) 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 # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu 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=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/gpu/drm/panel/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:249:6: warning: variable 'ret' is uninitialized when used here [-Wuninitialized] if (ret < 0) ^~~ drivers/gpu/drm/panel/panel-visionox-vtdr6130.c:246:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated. vim +/ret +249 drivers/gpu/drm/panel/panel-visionox-vtdr6130.c 2349183d32d83a7 Neil Armstrong 2023-01-09 241 2349183d32d83a7 Neil Armstrong 2023-01-09 242 static int visionox_vtdr6130_bl_update_status(struct backlight_device *bl) 2349183d32d83a7 Neil Armstrong 2023-01-09 243 { 2349183d32d83a7 Neil Armstrong 2023-01-09 244 struct mipi_dsi_device *dsi = bl_get_data(bl); 2349183d32d83a7 Neil Armstrong 2023-01-09 245 u16 brightness = backlight_get_brightness(bl); 2349183d32d83a7 Neil Armstrong 2023-01-09 246 int ret; 2349183d32d83a7 Neil Armstrong 2023-01-09 247 9402cde9347eca0 Richard Acayan 2023-01-16 248 mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); 2349183d32d83a7 Neil Armstrong 2023-01-09 @249 if (ret < 0) 2349183d32d83a7 Neil Armstrong 2023-01-09 250 return ret; 2349183d32d83a7 Neil Armstrong 2023-01-09 251 2349183d32d83a7 Neil Armstrong 2023-01-09 252 return 0; 2349183d32d83a7 Neil Armstrong 2023-01-09 253 } 2349183d32d83a7 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@xxxxxxxxxx> :::::: CC: Neil Armstrong <neil.armstrong@xxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
