diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index d0009b3614af5f31a481b387ec9f195c38294277..95c133a0554b73c5f1b9d350d748b223377afbdb 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -68,17 +68,15 @@ EXPORT_SYMBOL(of_find_device_by_node);
  * of_device_make_bus_id - Use the device node data to assign a unique name
  * @dev: pointer to device structure that is linked to a device tree node
  *
- * This routine will first try using either the dcr-reg or the reg property
- * value to derive a unique name.  As a last resort it will use the node
- * name followed by a unique number.
+ * This routine will first try using the translated bus address to
+ * derive a unique name. If it cannot, then it will prepend names from
+ * parent nodes until a unique name can be derived.
  */
 void of_device_make_bus_id(struct device *dev)
 {
-	static atomic_t bus_no_reg_magic;
 	struct device_node *node = dev->of_node;
 	const __be32 *reg;
 	u64 addr;
-	int magic;
 
 #ifdef CONFIG_PPC_DCR
 	/*
@@ -100,25 +98,25 @@ void of_device_make_bus_id(struct device *dev)
 	}
 #endif /* CONFIG_PPC_DCR */
 
-	/*
-	 * For MMIO, get the physical address
-	 */
-	reg = of_get_property(node, "reg", NULL);
-	if (reg) {
-		addr = of_translate_address(node, reg);
-		if (addr != OF_BAD_ADDR) {
-			dev_set_name(dev, "%llx.%s",
-				     (unsigned long long)addr, node->name);
+	/* Construct the name, using parent nodes if necessary to ensure uniqueness */
+	while (node->parent) {
+		/*
+		 * If the address can be translated, then that is as much
+		 * uniqueness as we need. Make it the first component and return
+		 */
+		reg = of_get_property(node, "reg", NULL);
+		if (reg && (addr = of_translate_address(node, reg)) != OF_BAD_ADDR) {
+			dev_set_name(dev, dev_name(dev) ? "%llx.%s:%s" : "%llx.%s",
+				     (unsigned long long)addr, node->name,
+				     dev_name(dev));
 			return;
 		}
-	}
 
-	/*
-	 * No BusID, use the node name and add a globally incremented
-	 * counter (and pray...)
-	 */
-	magic = atomic_add_return(1, &bus_no_reg_magic);
-	dev_set_name(dev, "%s.%d", node->name, magic - 1);
+		/* format arguments only used if dev_name() resolves to NULL */
+		dev_set_name(dev, dev_name(dev) ? "%s:%s" : "%s",
+			     strrchr(node->full_name, '/') + 1, dev_name(dev));
+		node = node->parent;
+	}
 }
 
 /**