diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index cec682a7b88d4f6a195ee647a2a170c2719add78..46fa60e7f722bb3fb0668da0de6ae576110a62cc 100644
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -644,7 +644,7 @@ static struct page *dummy_pcm_page(struct snd_pcm_substream *substream,
 	return virt_to_page(dummy_page[substream->stream]); /* the same page */
 }
 
-static struct snd_pcm_ops dummy_pcm_ops = {
+static const struct snd_pcm_ops dummy_pcm_ops = {
 	.open =		dummy_pcm_open,
 	.close =	dummy_pcm_close,
 	.hw_params =	dummy_pcm_hw_params,
@@ -653,7 +653,7 @@ static struct snd_pcm_ops dummy_pcm_ops = {
 	.pointer =	dummy_pcm_pointer,
 };
 
-static struct snd_pcm_ops dummy_pcm_ops_no_buf = {
+static const struct snd_pcm_ops dummy_pcm_ops_no_buf = {
 	.open =		dummy_pcm_open,
 	.close =	dummy_pcm_close,
 	.hw_params =	dummy_pcm_hw_params,
@@ -670,7 +670,7 @@ static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device,
 			      int substreams)
 {
 	struct snd_pcm *pcm;
-	struct snd_pcm_ops *ops;
+	const struct snd_pcm_ops *ops;
 	int err;
 
 	err = snd_pcm_new(dummy->card, "Dummy PCM", device,