Hi Stefan, Thank you for the patch! Yet something to improve: [auto build test ERROR on jss-tpmdd/next] [also build test ERROR on powerpc/next linux/master linus/master v5.6-rc5 next-20200310] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Stefan-Berger/Enable-vTPM-2-0-for-the-IBM-vTPM-driver/20200305-042731 base: git://git.infradead.org/users/jjs/linux-tpmdd next config: xtensa-randconfig-a001-20200310 (attached as .config) compiler: xtensa-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): >> ERROR: "of_device_compatible_match" undefined! --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org