return bytes_to_frames(substream->runtime, pos);
}
-static struct snd_pcm_hardware snd_pcsp_playback = {
+static const struct snd_pcm_hardware snd_pcsp_playback = {
.info = (SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_HALF_DUPLEX |
SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID),