Hi Nicolin, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on iommu/next] [also build test ERROR on tegra/for-next tegra-drm/drm/tegra/for-next linus/master v5.14-rc2 next-20210723] [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/Nicolin-Chen/iommu-arm-smmu-v3-A... base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next config: arm64-randconfig-r025-20210723 (attached as .config) compiler: aarch64-linux-gcc (GCC) 10.3.0 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/3c3adc4970f0dd2ff7ffeadadbf16d9b8... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Nicolin-Chen/iommu-arm-smmu-v3-Add-NVIDIA-implementation/20210724-033346 git checkout 3c3adc4970f0dd2ff7ffeadadbf16d9b85315712 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/iommu/arm/arm-smmu-v3/ drivers/scsi/pm8001/ kernel/cgroup/ 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 >>): 96 | static irqreturn_t nvidia_smmu_cmdqv_isr(int irq, void *devid) | ^~~~~~~~~~~ drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c: In function 'nvidia_smmu_cmdqv_isr': 126 | return IRQ_HANDLED; | ^~~~~~~~~~~ drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c:126:9: note: each undeclared identifier is reported only once for each function it appears in drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c: In function 'nvidia_smmu_device_reset': 346 | ret = devm_request_irq(nsmmu->cmdqv_dev, nsmmu->cmdqv_irq, nvidia_smmu_cmdqv_isr, | ^~~~~~~~~~~~~~~~ | devm_request_region 347 | IRQF_SHARED, "nvidia-smmu-cmdqv", nsmmu); | ^~~~~~~~~~~ drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c: At top level: drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c:403:21: warning: no previous prototype for 'nvidia_smmu_create' [-Wmissing-prototypes] 403 | struct nvidia_smmu *nvidia_smmu_create(struct arm_smmu_device *smmu) | ^~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/irqreturn_t +96 drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c 95 97 { 98 struct nvidia_smmu *nsmmu = (struct nvidia_smmu *)devid; 99 struct nvidia_smmu_vintf *vintf0 = &nsmmu->vintf0; 100 u32 vintf_err_map[2]; 101 u32 vcmdq_err_map[4]; 102 103 vintf_err_map[0] = readl_relaxed(nsmmu->cmdqv_base + NVIDIA_CMDQV_VINTF_ERR_MAP); 104 vintf_err_map[1] = readl_relaxed(nsmmu->cmdqv_base + NVIDIA_CMDQV_VINTF_ERR_MAP + 0x4); 105 106 vcmdq_err_map[0] = readl_relaxed(nsmmu->cmdqv_base + NVIDIA_CMDQV_VCMDQ_ERR_MAP); 107 vcmdq_err_map[1] = readl_relaxed(nsmmu->cmdqv_base + NVIDIA_CMDQV_VCMDQ_ERR_MAP + 0x4); 108 vcmdq_err_map[2] = readl_relaxed(nsmmu->cmdqv_base + NVIDIA_CMDQV_VCMDQ_ERR_MAP + 0x8); 109 vcmdq_err_map[3] = readl_relaxed(nsmmu->cmdqv_base + NVIDIA_CMDQV_VCMDQ_ERR_MAP + 0xC); 110 111 dev_warn(nsmmu->cmdqv_dev, 112 "Unexpected cmdqv error reported: vintf_map %08X %08X, vcmdq_map %08X %08X %08X %08X\n", 113 vintf_err_map[0], vintf_err_map[1], vcmdq_err_map[0], vcmdq_err_map[1], 114 vcmdq_err_map[2], vcmdq_err_map[3]); 115 116 /* If the error was reported by vintf0, avoid using any of its VCMDQs */ 117 if (vintf_err_map[vintf0->idx / 32] & (1 << (vintf0->idx % 32))) { 118 vintf0->status = readl_relaxed(vintf0->base + NVIDIA_VINTF_STATUS); 119 120 dev_warn(nsmmu->cmdqv_dev, "error (0x%lX) reported by host vintf0 - disabling its vcmdqs\n", 121 FIELD_GET(VINTF_STATUS, vintf0->status)); 122 } else if (vintf_err_map[0] || vintf_err_map[1]) { 123 dev_err(nsmmu->cmdqv_dev, "cmdqv error interrupt triggered by unassigned vintf!\n"); 124 } 125 127 } 128 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org