diff --git a/sound/sh/aica.c b/sound/sh/aica.c
index ab4802df62e1..822608da2e21 100644
--- a/sound/sh/aica.c
+++ b/sound/sh/aica.c
@@ -211,7 +211,7 @@ static void aica_chn_halt(void)
 }
 
 /* ALSA code below */
-static struct snd_pcm_hardware snd_pcm_aica_playback_hw = {
+static const struct snd_pcm_hardware snd_pcm_aica_playback_hw = {
 	.info = (SNDRV_PCM_INFO_NONINTERLEAVED),
 	.formats =
 	    (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |
diff --git a/sound/sh/sh_dac_audio.c b/sound/sh/sh_dac_audio.c
index c1e00ed715ee..a077f1c386ce 100644
--- a/sound/sh/sh_dac_audio.c
+++ b/sound/sh/sh_dac_audio.c
@@ -93,7 +93,7 @@ static void dac_audio_set_rate(struct snd_sh_dac *chip)
 
 /* PCM INTERFACE */
 
-static struct snd_pcm_hardware snd_sh_dac_pcm_hw = {
+static const struct snd_pcm_hardware snd_sh_dac_pcm_hw = {
 	.info			= (SNDRV_PCM_INFO_MMAP |
 					SNDRV_PCM_INFO_MMAP_VALID |
 					SNDRV_PCM_INFO_INTERLEAVED |