[kbuild-all] Re: [RFC][Patch v1 2/2] iommu/arm-smmu-v3: Add support for NVIDIA CMDQ-Virtualization hw

Hi Nicolin, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on iommu/next] [also build test WARNING 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-allyesconfig (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 COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 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 warnings (new ones prefixed by >>): 368 | struct nvidia_smmu *nvidia_smmu_create(struct arm_smmu_device *smmu) | ^~~~~~~~~~~~~~~~~~ vim +/nvidia_smmu_create +368 drivers/iommu/arm/arm-smmu-v3/nvidia-smmu-v3.c 366 367 #ifdef CONFIG_ACPI 369 { 370 struct nvidia_smmu *nsmmu = NULL; 371 struct acpi_iort_node *node; 372 struct acpi_device *adev; 373 struct device *cmdqv_dev; 374 const char *match_uid; 375 376 if (acpi_disabled) 377 return NULL; 378 379 /* Look for a device in the DSDT whose _UID matches the SMMU's iort_node identifier */ 380 node = *(struct acpi_iort_node **)dev_get_platdata(smmu->dev); 381 match_uid = kasprintf(GFP_KERNEL, "%u", node->identifier); 382 adev = acpi_dev_get_first_match_dev(NVIDIA_SMMU_CMDQV_HID, match_uid, -1); 383 kfree(match_uid); 384 385 if (!adev) 386 return NULL; 387 388 cmdqv_dev = bus_find_device_by_acpi_dev(&platform_bus_type, adev); 389 if (!cmdqv_dev) 390 return NULL; 391 392 dev_info(smmu->dev, "found companion CMDQV device, %s", dev_name(cmdqv_dev)); 393 394 nsmmu = devm_krealloc(smmu->dev, smmu, sizeof(*nsmmu), GFP_KERNEL); 395 if (!nsmmu) 396 return ERR_PTR(-ENOMEM); 397 398 nsmmu->cmdqv_dev = cmdqv_dev; 399 400 return nsmmu; 401 } 402 #else 403 struct nvidia_smmu *nvidia_smmu_create(struct arm_smmu_device *smmu) 404 { 405 return NULL; 406 } 407 #endif 408 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org