Hi Linus, I love your patch! Yet something to improve: [auto build test ERROR on regulator/for-next] [also build test ERROR on lee-mfd/for-mfd-next linux/master linus/master v5.10-rc6 next-20201204] [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/Linus-Walleij/regulator-ab8500-Remove-unused-platform-data/20201204-220558 base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next config: arm-randconfig-r033-20201204 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 32c501dd88b62787d3a5ffda7aabcf4650dbe3cd) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/0day-ci/linux/commit/93302da517fcb05f0108f3d9510483c19f4e2c5f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Linus-Walleij/regulator-ab8500-Remove-unused-platform-data/20201204-220558 git checkout 93302da517fcb05f0108f3d9510483c19f4e2c5f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/mfd/ab8500-core.c:24:10: fatal error: 'linux/regulator/ab8500.h' file not found #include ^~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. vim +24 drivers/mfd/ab8500-core.c 549931f99e030d6 Sundar R Iyer 2010-07-13 @24 #include 6bc4a568414caab Lee Jones 2012-05-17 25 #include 6bc4a568414caab Lee Jones 2012-05-17 26 #include 62579266cf9caca Rabin Vincent 2010-05-19 27 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org