Hi Jerome, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on linux/master] [also build test ERROR on linus/master ulf-hansson-mmc-mirror/next v5.15-rc5 next-20211013] [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] url: https://github.com/0day-ci/linux/commits/Jerome-Pouiller/mmc-allow-to-rel... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5816b3e6577eaa676ceb00a848f0fd65fe2adc29 config: nios2-randconfig-r016-20211014 (attached as .config) compiler: nios2-linux-gcc (GCC) 11.2.0 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/0day-ci/linux/commit/1b55cd56c0c104d97ba2a5c62923ed026... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jerome-Pouiller/mmc-allow-to-rely-on-the-DT-to-apply-quirks/20211014-223232 git checkout 1b55cd56c0c104d97ba2a5c62923ed0269c06d59 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=nios2 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 <<): ERROR: modpost: "mmc_of_find_child_device" [drivers/mmc/core/mmc_block.ko] undefined! ERROR: modpost: "of_device_compatible_match" [drivers/mmc/core/mmc_core.ko] undefined! --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org