[kbuild-all] [stffrdhrn:starfive-bad-dcache-flush 9/39] ERROR: modpost: "__udivdi3" [drivers/pwm/pwm-sifive-ptc.ko] undefined!

tree: https://github.com/stffrdhrn/linux.git starfive-bad-dcache-flush head: a5c948a9cc2b8944f00056c067fb7bde19b34843 commit: 76d60389d04dfd86f4a655e3b1e5b2d4dd4cc896 [9/39] drivers/pwm: Add SiFive PWM PTC driver config: microblaze-randconfig-c003-20210522 (attached as .config) compiler: microblaze-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/stffrdhrn/linux/commit/76d60389d04dfd86f4a655e3b1e5b2d... git remote add stffrdhrn https://github.com/stffrdhrn/linux.git git fetch --no-tags stffrdhrn starfive-bad-dcache-flush git checkout 76d60389d04dfd86f4a655e3b1e5b2d4dd4cc896 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 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