Hi Guenter, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-staging head: a8f382d6e448547fa649f47443668d4a5336e271 commit: bb44b8b0b1e1bae9123fef3cbcf0b4a40887e3a3 [104/137] hwmon: (emc2103) Convert to use regmap and with_info API config: i386-buildonly-randconfig-004-20240714 (https://download.01.org/0day-ci/archive/20240714/202407140515.mXPztiXi-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/20240714/202407140515.mXPztiXi-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/202407140515.mXPztiXi-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/hwmon/emc2103.c:380:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] 380 | default: | ^ drivers/hwmon/emc2103.c:380:2: note: insert 'break;' to avoid fall-through 380 | default: | ^ | break; drivers/hwmon/emc2103.c:188:18: warning: unused variable 'pwm_base_frequencies' [-Wunused-const-variable] 188 | static const u16 pwm_base_frequencies[] = {26000, 19531, 4882, 2441}; | ^~~~~~~~~~~~~~~~~~~~ 2 warnings generated. vim +380 drivers/hwmon/emc2103.c 338 339 static umode_t emc2103_is_visible(const void *_data, enum hwmon_sensor_types type, 340 u32 attr, int channel) 341 { 342 const struct emc2103_data *data = _data; 343 344 switch (type) { 345 case hwmon_temp: 346 if (channel >= data->temp_count) 347 return 0; 348 switch (attr) { 349 case hwmon_temp_input: 350 case hwmon_temp_fault: 351 case hwmon_temp_min_alarm: 352 case hwmon_temp_max_alarm: 353 return 0444; 354 case hwmon_temp_min: 355 case hwmon_temp_max: 356 return 0644; 357 default: 358 break; 359 } 360 break; 361 case hwmon_fan: 362 switch (attr) { 363 case hwmon_fan_input: 364 case hwmon_fan_fault: 365 return 0444; 366 case hwmon_fan_div: 367 case hwmon_fan_target: 368 return 0644; 369 default: 370 break; 371 } 372 break; 373 case hwmon_pwm: 374 switch (attr) { 375 case hwmon_pwm_enable: 376 return 0644; 377 default: 378 break; 379 } > 380 default: 381 break; 382 } 383 return 0; 384 } 385 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki