Hi Jacob, I love your patch! Yet something to improve: [auto build test ERROR on e49d033bddf5b565044e2abe4241353959bc9120] url: https://github.com/0day-ci/linux/commits/Jacob-Pan/Simplify-and-restrict-... base: e49d033bddf5b565044e2abe4241353959bc9120 config: arm64-randconfig-r034-20210416 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project f549176ad976caa3e19edd036df9a7e12770af7c) 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 # https://github.com/0day-ci/linux/commit/6d85fee95bdcd7e53f10442ddc71d0c31... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jacob-Pan/Simplify-and-restrict-IOMMU-SVA-APIs/20210417-052451 git checkout 6d85fee95bdcd7e53f10442ddc71d0c310d43367 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 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 >>): .sva_bind = arm_smmu_sva_bind, ^~~~~~~~~~~~~~~~~ 1 error generated. vim +2631 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c f534d98b9d2705 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c Jean-Philippe Brucker 2020-09-18 2608 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2609 static struct iommu_ops arm_smmu_ops = { 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2610 .capable = arm_smmu_capable, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2611 .domain_alloc = arm_smmu_domain_alloc, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2612 .domain_free = arm_smmu_domain_free, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2613 .attach_dev = arm_smmu_attach_dev, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2614 .map = arm_smmu_map, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2615 .unmap = arm_smmu_unmap, 07fdef34d2be68 drivers/iommu/arm-smmu-v3.c Zhen Lei 2018-09-20 2616 .flush_iotlb_all = arm_smmu_flush_iotlb_all, 32b124492bdf97 drivers/iommu/arm-smmu-v3.c Robin Murphy 2017-09-28 2617 .iotlb_sync = arm_smmu_iotlb_sync, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2618 .iova_to_phys = arm_smmu_iova_to_phys, cefa0d55da3753 drivers/iommu/arm-smmu-v3.c Joerg Roedel 2020-04-29 2619 .probe_device = arm_smmu_probe_device, cefa0d55da3753 drivers/iommu/arm-smmu-v3.c Joerg Roedel 2020-04-29 2620 .release_device = arm_smmu_release_device, 08d4ca2a672bab drivers/iommu/arm-smmu-v3.c Robin Murphy 2016-09-12 2621 .device_group = arm_smmu_device_group, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2622 .domain_get_attr = arm_smmu_domain_get_attr, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2623 .domain_set_attr = arm_smmu_domain_set_attr, 8f78515425daea drivers/iommu/arm-smmu-v3.c Robin Murphy 2016-09-12 2624 .of_xlate = arm_smmu_of_xlate, 50019f09a4baa0 drivers/iommu/arm-smmu-v3.c Eric Auger 2017-01-19 2625 .get_resv_regions = arm_smmu_get_resv_regions, a66c5dc549d1e1 drivers/iommu/arm-smmu-v3.c Thierry Reding 2019-12-18 2626 .put_resv_regions = generic_iommu_put_resv_regions, f534d98b9d2705 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c Jean-Philippe Brucker 2020-09-18 2627 .dev_has_feat = arm_smmu_dev_has_feature, f534d98b9d2705 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c Jean-Philippe Brucker 2020-09-18 2628 .dev_feat_enabled = arm_smmu_dev_feature_enabled, f534d98b9d2705 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c Jean-Philippe Brucker 2020-09-18 2629 .dev_enable_feat = arm_smmu_dev_enable_feature, f534d98b9d2705 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c Jean-Philippe Brucker 2020-09-18 2630 .dev_disable_feat = arm_smmu_dev_disable_feature, 32784a9562fb05 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c Jean-Philippe Brucker 2020-11-06 @2631 .sva_bind = arm_smmu_sva_bind, 32784a9562fb05 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c Jean-Philippe Brucker 2020-11-06 2632 .sva_unbind = arm_smmu_sva_unbind, 32784a9562fb05 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c Jean-Philippe Brucker 2020-11-06 2633 .sva_get_pasid = arm_smmu_sva_get_pasid, 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2634 .pgsize_bitmap = -1UL, /* Restricted during device attach */ 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2635 }; 48ec83bcbcf509 drivers/iommu/arm-smmu-v3.c Will Deacon 2015-05-27 2636 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org