sparc: Propagate SBUS iommu archdata into real of_device objects.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/sbus/sbus.c

@@ -30,6 +30,24 @@ static DEVICE_ATTR(obppath, S_IRUSR | S_IRGRP | S_IROTH, show_sbusobppath_attr,
 
 struct sbus_bus *sbus_root;
 
+static void __init fill_sbus_device_iommu(struct sbus_dev *sdev)
+{
+	struct of_device *op = of_find_device_by_node(sdev->ofdev.node);
+	struct dev_archdata *sd, *bus_sd;
+	struct sbus_bus *sbus;
+
+	sbus = sdev->bus;
+	bus_sd = &sbus->ofdev.dev.archdata;
+
+	sd = &sdev->ofdev.dev.archdata;
+	sd->iommu = bus_sd->iommu;
+	sd->stc = bus_sd->stc;
+
+	sd = &op->dev.archdata;
+	sd->iommu = bus_sd->iommu;
+	sd->stc = bus_sd->stc;
+}
+
 static void __init fill_sbus_device(struct device_node *dp, struct sbus_dev *sdev)
 {
 	struct dev_archdata *sd;
@@ -85,6 +103,8 @@ static void __init fill_sbus_device(struct device_node *dp, struct sbus_dev *sde
 
 	/* WE HAVE BEEN INVADED BY ALIENS! */
 	err = sysfs_create_file(&sdev->ofdev.dev.kobj, &dev_attr_obppath.attr);
+
+	fill_sbus_device_iommu(sdev);
 }
 
 static void __init sbus_bus_ranges_init(struct device_node *dp, struct sbus_bus *sbus)
@@ -209,10 +229,6 @@ static void __init walk_children(struct device_node *dp, struct sbus_dev *parent
 
 			sdev->bus = sbus;
 			sdev->parent = parent;
-			sdev->ofdev.dev.archdata.iommu =
-				sbus->ofdev.dev.archdata.iommu;
-			sdev->ofdev.dev.archdata.stc =
-				sbus->ofdev.dev.archdata.stc;
 
 			fill_sbus_device(dp, sdev);