Hi Vasileios, kernel test robot noticed the following build warnings: [auto build test WARNING on 96be67caa0f0420d4128cb67f07bbd7a6f49e03a] url: https://github.com/intel-lab-lkp/linux/commits/Vasileios-Amoiridis/iio-pressure-bmp280-Use-sleep-and-forced-mode-for-oneshot-captures/20241008-035238 base: 96be67caa0f0420d4128cb67f07bbd7a6f49e03a patch link: https://lore.kernel.org/r/20241007194945.66192-2-vassilisamir%40gmail.com patch subject: [PATCH v8 1/4] iio: pressure: bmp280: Use sleep and forced mode for oneshot captures config: i386-randconfig-006-20241011 (https://download.01.org/0day-ci/archive/20241011/202410111221.YIeXHxOv-lkp@xxxxxxxxx/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/20241011/202410111221.YIeXHxOv-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/202410111221.YIeXHxOv-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/iio/pressure/bmp280-core.c:1051:3: warning: variable 'meas_time_us' is uninitialized when used here [-Wuninitialized] 1051 | meas_time_us += BMP280_PRESS_HUMID_MEAS_OFFSET + | ^~~~~~~~~~~~ drivers/iio/pressure/bmp280-core.c:1046:32: note: initialize the variable 'meas_time_us' to silence this warning 1046 | unsigned int reg, meas_time_us; | ^ | = 0 drivers/iio/pressure/bmp280-core.c:2452:2: warning: variable 'offset' is uninitialized when used here [-Wuninitialized] 2452 | offset += sizeof(s32); | ^~~~~~ drivers/iio/pressure/bmp280-core.c:2437:17: note: initialize the variable 'offset' to silence this warning 2437 | int ret, offset; | ^ | = 0 2 warnings generated. vim +/meas_time_us +1051 drivers/iio/pressure/bmp280-core.c 1043 1044 static int bmp280_wait_conv(struct bmp280_data *data) 1045 { 1046 unsigned int reg, meas_time_us; 1047 int ret; 1048 1049 /* Check if we are using a BME280 device */ 1050 if (data->oversampling_humid) > 1051 meas_time_us += BMP280_PRESS_HUMID_MEAS_OFFSET + 1052 BIT(data->oversampling_humid) * BMP280_MEAS_DUR; 1053 1054 /* Pressure measurement time */ 1055 meas_time_us += BMP280_PRESS_HUMID_MEAS_OFFSET + 1056 BIT(data->oversampling_press) * BMP280_MEAS_DUR; 1057 1058 /* Temperature measurement time */ 1059 meas_time_us += BIT(data->oversampling_temp) * BMP280_MEAS_DUR; 1060 1061 /* Waiting time according to the BM(P/E)2 Sensor API */ 1062 fsleep(meas_time_us); 1063 1064 ret = regmap_read(data->regmap, BMP280_REG_STATUS, ®); 1065 if (ret) { 1066 dev_err(data->dev, "failed to read status register.\n"); 1067 return ret; 1068 } 1069 1070 if (reg & BMP280_REG_STATUS_MEAS_BIT) { 1071 dev_err(data->dev, "Measurement cycle didn't complete.\n"); 1072 return -EBUSY; 1073 } 1074 1075 return 0; 1076 } 1077 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
