[kbuild-all] ERROR: modpost: "__divdi3" [drivers/ptp/ptp_clockmatrix.ko] undefined!

tree: https://github.com/0day-ci/linux/commits/min-li-xe-renesas-com/ptp-clockm... head: cffaee07726f4bfb624fff0f4a35e0102026bf6f commit: cffaee07726f4bfb624fff0f4a35e0102026bf6f ptp: clockmatrix: use rsmu driver to access i2c/spi bus date: 7 weeks ago config: i386-randconfig-c001-20210928 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/cffaee07726f4bfb624fff0f4a35e0102... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review min-li-xe-renesas-com/ptp-clockmatrix-use-rsmu-driver-to-access-i2c-spi-bus/20210922-152050 git checkout cffaee07726f4bfb624fff0f4a35e0102026bf6f # 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; 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