[kbuild-all] [stffrdhrn:or1k-5.10-litex-net 6/7] ERROR: modpost: "litex_set_reg" undefined!

tree: https://github.com/stffrdhrn/linux.git or1k-5.10-litex-net head: c21cc618f8c443cdde3cc6eb21e4bc52f0700c60 commit: 0223cdd5b77a4f05b2824c1bf6493c04ee0ad76e [6/7] Litex: LiteETH: Fixups for compat with BE, also properly detect unset MAC config: microblaze-randconfig-r011-20200916 (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 git checkout 0223cdd5b77a4f05b2824c1bf6493c04ee0ad76e # 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