Hi Sebastian, I love your patch! Yet something to improve: [auto build test ERROR on input/next] [also build test ERROR on v5.7-rc6 next-20200519] [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/Sebastian-Reichel/EXC3000-Update... base: https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 135b877874fae96b4372c8a3fbfaa8ff44ff86e3) reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): .max_xy = SZ_4K - 1, ^ .max_xy = SZ_16K - 1, ^ drivers/input/touchscreen/exc3000.c:56:13: error: use of undeclared identifier 'SZ_16K' .max_xy = SZ_16K - 1, ^ drivers/input/touchscreen/exc3000.c:99:28: error: use of undeclared identifier 'SZ_16K' if (data->info->max_xy == SZ_16K - 1) ^ 4 errors generated. vim +/SZ_4K +48 drivers/input/touchscreen/exc3000.c 44 45 static struct eeti_dev_info exc3000_info[] = { 46 [EETI_EXC3000] = { 47 .name = "EETI EXC3000 Touch Screen", 49 }, 50 [EETI_EXC80H60] = { 51 .name = "EETI EXC80H60 Touch Screen", 53 }, 54 [EETI_EXC80H84] = { 55 .name = "EETI EXC80H84 Touch Screen", 56 .max_xy = SZ_16K - 1, 57 }, 58 }; 59 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org