Hi Abhash, kernel test robot noticed the following build errors: [auto build test ERROR on jic23-iio/togreg] [also build test ERROR on linus/master v6.11-rc1 next-20240729] [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/Abhash-Jha/iio-light-ltr390-Add-configurable-gain-and-resolution/20240729-222433 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg patch link: https://lore.kernel.org/r/20240729115056.355466-2-abhashkumarjha123%40gmail.com patch subject: [PATCH v3 1/3] iio: light: ltr390: Add configurable gain and resolution config: i386-buildonly-randconfig-003-20240730 (https://download.01.org/0day-ci/archive/20240730/202407300717.9WTaBkEv-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240730/202407300717.9WTaBkEv-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202407300717.9WTaBkEv-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> drivers/iio/light/ltr390.c:171:6: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 171 | LTR390_ALS_UVS_INT_TIME(idx)); | ^ drivers/iio/light/ltr390.c:42:36: note: expanded from macro 'LTR390_ALS_UVS_INT_TIME' 42 | #define LTR390_ALS_UVS_INT_TIME(x) FIELD_PREP(LTR390_ALS_UVS_INT_TIME_MASK, (x)) | ^ 1 error generated. vim +/FIELD_PREP +171 drivers/iio/light/ltr390.c 158 159 static int ltr390_set_int_time(struct ltr390_data *data, int val) 160 { 161 int ret, idx; 162 163 for (idx = 0; idx < ARRAY_SIZE(ltr390_int_time_map_us); idx++) { 164 if (ltr390_int_time_map_us[idx] != val) 165 continue; 166 167 guard(mutex)(&data->lock); 168 ret = regmap_update_bits(data->regmap, 169 LTR390_ALS_UVS_MEAS_RATE, 170 LTR390_ALS_UVS_INT_TIME_MASK, > 171 LTR390_ALS_UVS_INT_TIME(idx)); 172 if (ret) 173 return ret; 174 175 data->int_time_us = ltr390_int_time_map_us[idx]; 176 return 0; 177 } 178 179 return -EINVAL; 180 } 181 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki