[kbuild-all] [stffrdhrn:starfive-bad-dcache-flush 5/39] drivers/hwmon/sfctmp.c:132:5: warning: no previous prototype for 'temp_sensor_deinit'

tree: https://github.com/stffrdhrn/linux.git starfive-bad-dcache-flush head: a5c948a9cc2b8944f00056c067fb7bde19b34843 commit: 57954b0b0dce53804d072cca75ec36f7c2320c3a [5/39] drivers/hwmon: Add tempsensor hwmon driver for Starfive VIC7100 config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 9.3.0 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/stffrdhrn/linux/commit/57954b0b0dce53804d072cca75ec36f... git remote add stffrdhrn https://github.com/stffrdhrn/linux.git git fetch --no-tags stffrdhrn starfive-bad-dcache-flush git checkout 57954b0b0dce53804d072cca75ec36f7c2320c3a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 132 | int temp_sensor_deinit(struct sfc_temp *sfc_temp) | ^~~~~~~~~~~~~~~~~~ vim +/temp_sensor_deinit +132 drivers/hwmon/sfctmp.c 131 133 { 134 temp_sensor_power_down(sfc_temp); 135 return 0; 136 } 137 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org