tree: https://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/linux.git for-review/acpi-iort-id-rework head: 4582b00b57ab0807e87d54621173a29352109551 commit: 9c3839ce902c451c20b095d341dddcffb71a2cb5 [5/11] ACPI/IORT: Add an input ID to acpi_dma_configure() config: arm64-randconfig-r003-20200515 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 9c3839ce902c451c20b095d341dddcffb71a2cb5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): 1123 | { return NULL; } | ^ vim +1123 drivers/acpi/arm64/iort.c 1114 1115 #else 1116 static inline const struct iommu_ops *iort_fwspec_iommu_ops(struct device *dev) 1117 { return NULL; } 1118 static inline int iort_add_device_replay(const struct iommu_ops *ops, 1119 struct device *dev) 1120 { return 0; } 1121 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head) 1122 { return 0; } 1124 const struct iommu_ops *iort_iommu_configure_id(struct device *dev, 1125 const u32 *input_id) 1126 { return NULL; } 1127 #endif 1128 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org