Hi "Christian, I love your patch! Yet something to improve: [auto build test ERROR on next-20201117] [cannot apply to linus/master v5.10-rc4 v5.10-rc3 v5.10-rc2 v5.10-rc4] [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/Christian-K-nig/drm-ttm-rework-t... base: 7c8ca8129ee9724cb1527895fe6dec942ef07f19 config: mips-allmodconfig (attached as .config) compiler: mips-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/0day-ci/linux/commit/ed6ebc71bdbee87b189c3127e4e6a8407... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Christian-K-nig/drm-ttm-rework-ttm_tt-page-limit/20201117-220814 git checkout ed6ebc71bdbee87b189c3127e4e6a840776af4e2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 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