Hi Ibrahim, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on groeck-staging/hwmon-next] [also build test WARNING on linus/master v6.0-rc4 next-20220908] [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/Ibrahim-Tilki/hwmon-Add-max31760-fan-speed-controller/20220908-162723 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20220909/202209090420.yiz6T9uI-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 1546df49f5a6d09df78f569e4137ddb365a3e827) 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 # https://github.com/intel-lab-lkp/linux/commit/a7a9956fb85372f1d08a355df3af7d64c927a987 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Ibrahim-Tilki/hwmon-Add-max31760-fan-speed-controller/20220908-162723 git checkout a7a9956fb85372f1d08a355df3af7d64c927a987 # 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=hexagon SHELL=/bin/bash drivers/hwmon/ 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/hwmon/max31760.c:382:5: warning: no previous prototype for function 'max31760_read_string' [-Wmissing-prototypes] int max31760_read_string(struct device *dev, enum hwmon_sensor_types type, ^ drivers/hwmon/max31760.c:382:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int max31760_read_string(struct device *dev, enum hwmon_sensor_types type, ^ static 1 warning generated. vim +/max31760_read_string +382 drivers/hwmon/max31760.c 381 > 382 int max31760_read_string(struct device *dev, enum hwmon_sensor_types type, 383 u32 attr, int channel, const char **str) 384 { 385 switch (type) { 386 case hwmon_temp: 387 if (attr != hwmon_temp_label) 388 return -EOPNOTSUPP; 389 390 *str = channel ? "local" : "remote"; 391 392 return 0; 393 default: 394 return -EOPNOTSUPP; 395 } 396 } 397 -- 0-DAY CI Kernel Test Service https://01.org/lkp