Hi Shameer, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on pm/linux-next] [also build test WARNING on arm/for-next soc/for-next arm64/for-next/core linus/master v5.12-rc8] [cannot apply to iommu/next xlnx/master next-20210420] [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/Shameer-Kolothum/ACPI-IORT-Suppo... base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next config: arc-allyesconfig (attached as .config) compiler: arceb-elf-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/c68d4ba37ecc2173a2dc418799e23a184... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Shameer-Kolothum/ACPI-IORT-Support-for-IORT-RMR-node/20210420-173125 git checkout c68d4ba37ecc2173a2dc418799e23a184685d681 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/exynos/exynos_drm_dma.c:7: 92 | int iommu_dma_get_rmrs(struct fwnode_handle *iommu, struct list_head *list); | ^~~~~~~~~~~~~ include/linux/dma-iommu.h:93:1: error: expected identifier or '(' before '{' token 93 | { | ^ vim +92 include/linux/dma-iommu.h 91 93 { 94 return 0; 95 } 96 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org