diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
index a74c85867eb3..9757667cdd58 100644
--- a/sound/pci/hda/hda_controller.c
+++ b/sound/pci/hda/hda_controller.c
@@ -548,7 +548,7 @@ static int azx_get_time_info(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static struct snd_pcm_hardware azx_pcm_hw = {
+static const struct snd_pcm_hardware azx_pcm_hw = {
 	.info =			(SNDRV_PCM_INFO_MMAP |
 				 SNDRV_PCM_INFO_INTERLEAVED |
 				 SNDRV_PCM_INFO_BLOCK_TRANSFER |