VMD: Attach vmd resources to parent domain's resource tree

index d57e480..06490da 100644
@@ -503,6 +503,20 @@ static struct pci_ops vmd_ops = {
 	.write		= vmd_pci_write,
 };
 
+static void vmd_attach_resources(struct vmd_dev *vmd)
+{
+	vmd->dev->resource[VMD_CFGBAR].child = &vmd->resources[0];
+	vmd->dev->resource[VMD_MEMBAR1].child = &vmd->resources[1];
+	vmd->dev->resource[VMD_MEMBAR2].child = &vmd->resources[2];
+}
+
+static void vmd_detach_resources(struct vmd_dev *vmd)
+{
+	vmd->dev->resource[VMD_CFGBAR].child = NULL;
+	vmd->dev->resource[VMD_MEMBAR1].child = NULL;
+	vmd->dev->resource[VMD_MEMBAR2].child = NULL;
+}
+
 /*
  * VMD domains start at 0x1000 to not clash with ACPI _SEG domains.
  */

@@ -530,6 +544,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd)
 		.start = res->start,
 		.end   = (resource_size(res) >> 20) - 1,
 		.flags = IORESOURCE_BUS | IORESOURCE_PCI_FIXED,
+		.parent = res,
 	};
 
 	res = &vmd->dev->resource[VMD_MEMBAR1];

@@ -542,6 +557,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd)
 		.start = res->start,
 		.end   = res->end,
 		.flags = flags,
+		.parent = res,
 	};
 
 	res = &vmd->dev->resource[VMD_MEMBAR2];

@@ -554,6 +570,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd)
 		.start = res->start + 0x2000,
 		.end   = res->end,
 		.flags = flags,
+		.parent = res,
 	};
 
 	sd->domain = vmd_find_free_domain();

@@ -578,6 +595,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd)
 		return -ENODEV;
 	}
 
+	vmd_attach_resources(vmd);
 	vmd_setup_dma_ops(vmd);
 	dev_set_msi_domain(&vmd->bus->dev, vmd->irq_domain);
 	pci_rescan_bus(vmd->bus);

@@ -674,6 +692,7 @@ static void vmd_remove(struct pci_dev *dev)
 {
 	struct vmd_dev *vmd = pci_get_drvdata(dev);
 
+	vmd_detach_resources(vmd);
 	pci_set_drvdata(dev, NULL);
 	sysfs_remove_link(&vmd->dev->dev.kobj, "domain");
 	pci_stop_root_bus(vmd->bus);