diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c
index 7a43c0c..8a431bc 100644
--- a/sound/ppc/pmac.c
+++ b/sound/ppc/pmac.c
@@ -992,9 +992,9 @@
 		return -ENODEV;
 
 	if (!sound) {
-		sound = of_find_node_by_name(NULL, "sound");
-		while (sound && sound->parent != chip->node)
-			sound = of_find_node_by_name(sound, "sound");
+		for_each_node_by_name(sound, "sound")
+			if (sound->parent == chip->node)
+				break;
 	}
 	if (! sound) {
 		of_node_put(chip->node);