Hi Daniel, kernel test robot noticed the following build warnings: [auto build test WARNING on media-tree/master] [also build test WARNING on linuxtv-media-stage/master linus/master v6.8-rc2 next-20240131] [cannot apply to sailus-media-tree/streams] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Scally/media-uapi-Add-MEDIA_BUS_FMT_RGB202020_1X60-format-code/20240201-005029 base: git://linuxtv.org/media_tree.git master patch link: https://lore.kernel.org/r/20240131164709.810587-4-dan.scally%40ideasonboard.com patch subject: [PATCH 3/5] media: mali-c55: Add Mali-C55 ISP driver config: x86_64-allyesconfig compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202402011444.FmR2hbDZ-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/media/platform/arm/mali-c55/mali-c55-capture.c:286:21: warning: 'const' type qualifier on return type has no effect [-Wignored-qualifiers] 286 | static const char * const mali_c55_cap_dev_to_name(struct mali_c55_cap_dev *cap) | ^~~~~ 1 warning generated. vim +/const +286 drivers/media/platform/arm/mali-c55/mali-c55-capture.c 285 > 286 static const char * const mali_c55_cap_dev_to_name(struct mali_c55_cap_dev *cap) 287 { 288 if (cap->reg_offset == MALI_C55_CAP_DEV_FR_REG_OFFSET) 289 return capture_device_names[0]; 290 else if (cap->reg_offset == MALI_C55_CAP_DEV_DS_REG_OFFSET) 291 return capture_device_names[1]; 292 else 293 return "params/stat not supported yet"; 294 } 295 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki