diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 7a9b6b4..be7c1db 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -142,6 +142,9 @@
 	if (ret < 0)
 		return ret;
 
+	if (!info->cpu_dai.name || !info->codec_dai.name)
+		return -EINVAL;
+
 	/* card name is created from CPU/CODEC dai name */
 	name = devm_kzalloc(dev,
 			    strlen(info->cpu_dai.name)   +