diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index b20eb7f..d0f1dbc 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -122,7 +122,7 @@ static int add_conn_list(struct hda_codec *codec, hda_nid_t nid, int len,
 {
 	struct hda_conn_list *p;
 
-	p = kmalloc(sizeof(*p) + len * sizeof(hda_nid_t), GFP_KERNEL);
+	p = kmalloc(struct_size(p, conns, len), GFP_KERNEL);
 	if (!p)
 		return -ENOMEM;
 	p->len = len;