diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c
index fe2946c5831457f4baa36e55a7e4a13c20c9b552..eb6538b58008b641f06cd7fab3ca815b4ae4ca3d 100644
--- a/arch/ppc64/kernel/prom.c
+++ b/arch/ppc64/kernel/prom.c
@@ -834,7 +834,7 @@ void __init unflatten_device_tree(void)
 {
 	unsigned long start, mem, size;
 	struct device_node **allnextp = &allnodes;
-	char *p;
+	char *p = NULL;
 	int l = 0;
 
 	DBG(" -> unflatten_device_tree()\n");