diff --git a/sound/sparc/amd7930.c b/sound/sparc/amd7930.c
index 35c1f6a..a6864fd 100644
--- a/sound/sparc/amd7930.c
+++ b/sound/sparc/amd7930.c
@@ -666,7 +666,7 @@ static snd_pcm_uframes_t snd_amd7930_capture_pointer(struct snd_pcm_substream *s
 }
 
 /* Playback and capture have identical properties.  */
-static struct snd_pcm_hardware snd_amd7930_pcm_hw =
+static const struct snd_pcm_hardware snd_amd7930_pcm_hw =
 {
 	.info			= (SNDRV_PCM_INFO_MMAP |
 				   SNDRV_PCM_INFO_MMAP_VALID |
diff --git a/sound/sparc/cs4231.c b/sound/sparc/cs4231.c
index 3d7d425..f5192b3 100644
--- a/sound/sparc/cs4231.c
+++ b/sound/sparc/cs4231.c
@@ -1089,7 +1089,7 @@ static int snd_cs4231_probe(struct snd_cs4231 *chip)
 	return 0;		/* all things are ok.. */
 }
 
-static struct snd_pcm_hardware snd_cs4231_playback = {
+static const struct snd_pcm_hardware snd_cs4231_playback = {
 	.info			= SNDRV_PCM_INFO_MMAP |
 				  SNDRV_PCM_INFO_INTERLEAVED |
 				  SNDRV_PCM_INFO_MMAP_VALID |
@@ -1113,7 +1113,7 @@ static struct snd_pcm_hardware snd_cs4231_playback = {
 	.periods_max		= 1024,
 };
 
-static struct snd_pcm_hardware snd_cs4231_capture = {
+static const struct snd_pcm_hardware snd_cs4231_capture = {
 	.info			= SNDRV_PCM_INFO_MMAP |
 				  SNDRV_PCM_INFO_INTERLEAVED |
 				  SNDRV_PCM_INFO_MMAP_VALID |
diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c
index 52063b2..72b6c4a 100644
--- a/sound/sparc/dbri.c
+++ b/sound/sparc/dbri.c
@@ -1980,7 +1980,7 @@ static irqreturn_t snd_dbri_interrupt(int irq, void *dev_id)
 /****************************************************************************
 		PCM Interface
 ****************************************************************************/
-static struct snd_pcm_hardware snd_dbri_pcm_hw = {
+static const struct snd_pcm_hardware snd_dbri_pcm_hw = {
 	.info		= SNDRV_PCM_INFO_MMAP |
 			  SNDRV_PCM_INFO_INTERLEAVED |
 			  SNDRV_PCM_INFO_BLOCK_TRANSFER |