Hi Mary, kernel test robot noticed the following build errors: [auto build test ERROR on lee-mfd/for-mfd-next] [also build test ERROR on lee-mfd/for-mfd-fixes andi-shyti/i2c/i2c-host akpm-mm/mm-everything linus/master v6.11-rc1 next-20240802] [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/Mary-Strodl/x86-Add-basic-support-for-the-Congatec-CGEB-BIOS-interface/20240803-013725 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next patch link: https://lore.kernel.org/r/20240801160610.101859-2-mstrodl%40csh.rit.edu patch subject: [PATCH v2 1/2] x86: Add basic support for the Congatec CGEB BIOS interface config: i386-buildonly-randconfig-005-20240804 (https://download.01.org/0day-ci/archive/20240804/202408040501.vvHCkNqn-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/20240804/202408040501.vvHCkNqn-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/202408040501.vvHCkNqn-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "cn_netlink_send" [drivers/mfd/congatec-cgeb.ko] undefined! >> ERROR: modpost: "cn_add_callback" [drivers/mfd/congatec-cgeb.ko] undefined! >> ERROR: modpost: "cn_del_callback" [drivers/mfd/congatec-cgeb.ko] undefined! -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki