Hi Jie, Thank you for the patch! Yet something to improve: [auto build test ERROR on wsa/i2c/for-next] [also build test ERROR on vhost/linux-next linus/master linux/master v5.9 next-20201009] [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/Jie-Deng/i2c-virtio-add-a-virtio... base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next config: x86_64-randconfig-a004-20201012 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 9e72d3eaf38f217698f72cb8fdc969a6e72dad3a) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/152ef3f6057acca49f276933274b09df8... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jie-Deng/i2c-virtio-add-a-virtio-i2c-frontend-driver/20201012-095821 git checkout 152ef3f6057acca49f276933274b09df8880243d # 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: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): make[2]: *** [scripts/Makefile.headersinst:63: usr/include/linux/virtio_i2c.h] Error 1 make[2]: Target '__headers' not remade because of errors. make[1]: *** [Makefile:1286: headers] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org