diff --git a/drivers/base/core.c b/drivers/base/core.c
index e73c92d..d230ff4 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1142,6 +1142,9 @@
 	struct device *child;
 	int error = 0;
 
+	if (!parent->p)
+		return 0;
+
 	klist_iter_init(&parent->p->klist_children, &i);
 	while ((child = next_device(&i)) && !error)
 		error = fn(child, data);