Hi Kai-Heng, kernel test robot noticed the following build errors: [auto build test ERROR on rafael-pm/linux-next] [also build test ERROR on groeck-staging/hwmon-next rafael-pm/acpi-bus linus/master v6.7 next-20240112] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Kai-Heng-Feng/hwmon-acpi_power_meter-Ensure-IPMI-space-handler-is-ready-on-Dell-systems/20240109-121520 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next patch link: https://lore.kernel.org/r/20240109041218.980674-2-kai.heng.feng%40canonical.com patch subject: [PATCH v4 2/2] hwmon: (acpi_power_meter) Ensure IPMI space handler is ready on Dell systems config: loongarch-randconfig-r112-20240113 (https://download.01.org/0day-ci/archive/20240113/202401131750.F51XQF3H-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20240113/202401131750.F51XQF3H-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/202401131750.F51XQF3H-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): loongarch64-linux-ld: drivers/hwmon/acpi_power_meter.o: in function `.L212': >> acpi_power_meter.c:(.text+0x15c0): undefined reference to `acpi_wait_for_acpi_ipmi' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki