Hi Jordan, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on next-20200612] [cannot apply to iommu/next robh/for-next arm/for-next keystone/next rockchip/for-next arm64/for-next/core shawnguo/for-next soc/for-next v5.7] [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/Jordan-Crouse/iommu-arm-smmu-Ena... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git b961f8dc8976c091180839f4483d67b7c2ca2578 config: arm64-randconfig-r026-20200612 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3b43f006294971b8049d4807110032169780e5b8) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 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 >>, old ones prefixed by <<): return of_device_is_compatible(smmu_domain->dev.of_node, "qcom,adreno"); ~~~~~~~~~~~~~~~~^ -> 1 error generated. vim +17 drivers/iommu/arm-smmu-qcom.c 14 15 static bool qcom_adreno_smmu_is_gpu_device(struct arm_smmu_domain *smmu_domain) 16 { 18 } 19 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org