ntel/iommu.c
@@ -3812,7 +3812,7 @@ static struct iommu_device *intel_iommu_probe_device(struct device *dev)
 			}
 
 			if (info->ats_supported && ecap_prs(iommu->ecap) &&
-			    pci_pri_supported(pdev))
+			    ecap_pds(iommu->ecap) && pci_pri_supported(pdev))
 				info->pri_supported = 1;
 		}
 	}FAILED: patch "[PATCH] iommu/vt-d: PRS isn't usable if PDS isn't supported" failed to apply to 5.10-stable tree<gregkh@linuxfoundation.org> undefinedbaolu.lu@linux.intel.com,joel.granados@kernel.org,joerg.roedel@amd.com undefined undefined undefined undefined˜