Hi LI, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on jic23-iio/togreg] [also build test WARNING on v5.18-rc6 next-20220509] [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] url: https://github.com/intel-lab-lkp/linux/commits/LI-Qingwu/iio-accel-bmi088-support-BMI085-BMI090L/20220509-215750 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: i386-randconfig-r013-20220509 (https://download.01.org/0day-ci/archive/20220510/202205100100.6k4OJbjS-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/70883e96ff4d7433fa8974815aba932f8bb2e8e7 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review LI-Qingwu/iio-accel-bmi088-support-BMI085-BMI090L/20220509-215750 git checkout 70883e96ff4d7433fa8974815aba932f8bb2e8e7 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/iio/accel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/iio/accel/bmi088-accel-core.c: In function 'bmi088_accel_set_scale': >> drivers/iio/accel/bmi088-accel-core.c:244:13: warning: unused variable 'reg' [-Wunused-variable] 244 | int reg; | ^~~ >> drivers/iio/accel/bmi088-accel-core.c:243:13: warning: unused variable 'ret' [-Wunused-variable] 243 | int ret; | ^~~ vim +/reg +244 drivers/iio/accel/bmi088-accel-core.c 239 240 static int bmi088_accel_set_scale(struct bmi088_accel_data *data, int val, int val2) 241 { 242 unsigned int i; > 243 int ret; > 244 int reg; 245 246 for (i = 0; i < 4; i++) 247 if (val == data->chip_info->scale_table[i][0] && 248 val2 == data->chip_info->scale_table[i][1]) 249 break; 250 251 if (i >= 4) 252 return -EINVAL; 253 254 return regmap_write(data->regmap, BMI088_ACCEL_REG_ACC_RANGE, i); 255 } 256 -- 0-DAY CI Kernel Test Service https://01.org/lkp