diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c
index cd11d5ca80dfffa8cf863df49d1f911931cddf24..6ddb795f83e8e9ccd62e713d997599baee77122a 100644
--- a/arch/powerpc/kernel/pci_of_scan.c
+++ b/arch/powerpc/kernel/pci_of_scan.c
@@ -310,6 +310,8 @@ static void __devinit __of_scan_bus(struct device_node *node,
 	/* Scan direct children */
 	for_each_child_of_node(node, child) {
 		pr_debug("  * %s\n", child->full_name);
+		if (!of_device_is_available(child))
+			continue;
 		reg = of_get_property(child, "reg", &reglen);
 		if (reg == NULL || reglen < 20)
 			continue;