Hi Maud, kernel test robot noticed the following build warnings:
[auto build test WARNING on d7af19298454ed155f5cf67201a70f5cf836c842] url: https://github.com/intel-lab-lkp/linux/commits/Maud-Spierings-via-B4-Relay/dt-bindings-backlight-Add-max25014-bindings/20250725-191221 base: d7af19298454ed155f5cf67201a70f5cf836c842 patch link: https://lore.kernel.org/r/20250725-max25014-v1-2-0e8cce92078e%40gocontroll.com patch subject: [PATCH 2/4] backlight: add max25014atg backlight config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20250727/202507270543.g0tt6f25-...@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250727/202507270543.g0tt6f25-...@intel.com/reproduce) 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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202507270543.g0tt6f25-...@intel.com/ All warnings (new ones prefixed by >>): >> drivers/video/backlight/max25014.c:86:4: warning: variable 'res' is >> uninitialized when used here [-Wuninitialized] 86 | res |= 1 << i; | ^~~ drivers/video/backlight/max25014.c:82:13: note: initialize the variable 'res' to silence this warning 82 | uint8_t res, i; | ^ | = '\0' 1 warning generated. vim +/res +86 drivers/video/backlight/max25014.c 73 74 /** 75 * @brief get the bit mask for the DISABLE register. 76 * 77 * @param strings the led string configuration array. 78 * @return uint8_t bits to set in the register. 79 */ 80 static uint8_t strings_mask(struct max25014 *maxim) 81 { 82 uint8_t res, i; 83 84 for (i = 0; i < 4; i++) { 85 if (maxim->pdata->strings[i] == 0) > 86 res |= 1 << i; 87 } 88 return res; 89 } 90 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
