}
 EXPORT_SYMBOL(snd_wss_create);
 
-static struct snd_pcm_ops snd_wss_playback_ops = {
+static const struct snd_pcm_ops snd_wss_playback_ops = {
        .open =         snd_wss_playback_open,
        .close =        snd_wss_playback_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .pointer =      snd_wss_playback_pointer,
 };
 
-static struct snd_pcm_ops snd_wss_capture_ops = {
+static const struct snd_pcm_ops snd_wss_capture_ops = {
        .open =         snd_wss_capture_open,
        .close =        snd_wss_capture_close,
        .ioctl =        snd_pcm_lib_ioctl,