[kbuild-all] [pdx86-platform-drivers-x86:review-hans 77/100] ERROR: modpost: "battery_hook_register" [drivers/platform/x86/system76_acpi.ko] undefined!

tree: https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x8... review-hans head: fc3341b4b55f46ad0846a22ae149d94bac6ce40b commit: 76f7eba3e0a248af4cc4f302d95031fa2fb65fab [77/100] platform/x86: system76_acpi: Add battery charging thresholds config: i386-randconfig-a013-20211019 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x8... git remote add pdx86-platform-drivers-x86 https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x8... git fetch --no-tags pdx86-platform-drivers-x86 review-hans git checkout 76f7eba3e0a248af4cc4f302d95031fa2fb65fab # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Note: the pdx86-platform-drivers-x86/review-hans HEAD fc3341b4b55f46ad0846a22ae149d94bac6ce40b builds fine. It only hurts bisectability. All errors (new ones prefixed by >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org