Hi Nuno, kernel test robot noticed the following build warnings: [auto build test WARNING on 9703c672af8dd3573c76ce509dfff26bf6c4768d] url: https://github.com/intel-lab-lkp/linux/commits/Nuno-S-via-B4-Relay/dt-binbings-mfd-Add-bindings-for-the-LTC4283-Swap-Controller/20250814-190311 base: 9703c672af8dd3573c76ce509dfff26bf6c4768d patch link: https://lore.kernel.org/r/20250814-ltc4283-support-v1-4-88b2cef773f2%40analog.com patch subject: [PATCH 4/6] hwmon: ltc4283-hwmon: Add support for the LTC4283 Swap Controller config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20250816/202508160822.04pfkosr-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/20250816/202508160822.04pfkosr-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/202508160822.04pfkosr-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/hwmon/ltc4283-hwmon.c:579:10: warning: result of comparison of constant 65536 with expression of type 'u16' (aka 'unsigned short') is always false [-Wtautological-constant-out-of-range-compare] 579 | if (tmp == BIT(16)) | ~~~ ^ ~~~~~~~ 1 warning generated. vim +579 drivers/hwmon/ltc4283-hwmon.c 570 571 static int __ltc4283_hwmon_write_in_history(struct ltc4283_hwmon *st, 572 u32 reg, long lowest, u32 fs) 573 { 574 __be16 __raw; 575 u16 tmp; 576 int ret; 577 578 tmp = DIV_ROUND_CLOSEST(BIT(16) * lowest, fs); > 579 if (tmp == BIT(16)) 580 tmp = U16_MAX; 581 582 __raw = cpu_to_be16(tmp); 583 584 ret = regmap_bulk_write(st->map, reg, &__raw, sizeof(__raw)); 585 if (ret) 586 return ret; 587 588 tmp = 0; 589 return regmap_bulk_write(st->map, reg + 1, &tmp, sizeof(tmp)); 590 } 591 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
