Hi Naresh, kernel test robot noticed the following build warnings: [auto build test WARNING on 5fbf8734fb36cf67339f599f0e51747a6aff690c] url: https://github.com/intel-lab-lkp/linux/commits/Naresh-Solanki/hwmon-max6639-Update-hwmon-init-using-info/20240528-172245 base: 5fbf8734fb36cf67339f599f0e51747a6aff690c patch link: https://lore.kernel.org/r/20240528091808.863702-1-naresh.solanki%409elements.com patch subject: [PATCH v2] hwmon: (max6639) : Update hwmon init using info config: i386-buildonly-randconfig-003-20240528 (https://download.01.org/0day-ci/archive/20240528/202405282012.UaQ1329z-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/20240528/202405282012.UaQ1329z-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/202405282012.UaQ1329z-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/hwmon/max6639.c:291:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 291 | u8 x; | ^ drivers/hwmon/max6639.c:328:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions] 328 | u8 x; | ^ 2 warnings generated. vim +291 drivers/hwmon/max6639.c 275 276 static int max6639_read_pwm(struct device *dev, u32 attr, int channel, 277 long *pwm_val) 278 { 279 struct max6639_data *data = dev_get_drvdata(dev); 280 unsigned int val, res; 281 282 if (IS_ERR(data)) 283 return PTR_ERR(data); 284 285 switch (attr) { 286 case hwmon_pwm_input: 287 res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(channel), &val); 288 *pwm_val = val * 255 / 120; 289 return 0; 290 case hwmon_pwm_freq: > 291 u8 x; 292 293 res = regmap_read(data->regmap, MAX6639_REG_FAN_CONFIG3(channel), &val); 294 if (res < 0) 295 return res; 296 x = val & MAX6639_FAN_CONFIG3_FREQ_MASK; 297 298 res = regmap_read(data->regmap, MAX6639_REG_GCONFIG, &val); 299 if (res < 0) 300 return res; 301 302 if (val & MAX6639_GCONFIG_PWM_FREQ_HI) 303 x |= 0x4; 304 x &= 0x7; 305 *pwm_val = freq_table[x]; 306 return res; 307 default: 308 return -EOPNOTSUPP; 309 } 310 } 311 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
