ALSA: gus: constify snd_pcm_ops structures

snd_pcm_ops are not supposed to change at runtime. All functions
working with snd_pcm_ops provided by <sound/pcm.h> work with
const snd_pcm_ops. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/isa/gus/gus_pcm.c b/sound/isa/gus/gus_pcm.c
index 6b3da01a93b7b0c82e612671c30277f8fbea5ebf..36e852fea9f2d4b433c90f8b0e735f78357db451 100644 (file)
--- a/sound/isa/gus/gus_pcm.c
+++ b/sound/isa/gus/gus_pcm.c
@@ -842,7 +842,7 @@ static const struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
        .put = snd_gf1_pcm_volume_put
 };
 
-static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
+static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
        .open =         snd_gf1_pcm_playback_open,
        .close =        snd_gf1_pcm_playback_close,
        .ioctl =        snd_pcm_lib_ioctl,
@@ -856,7 +856,7 @@ static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
        .fill_silence = snd_gf1_pcm_playback_silence,
 };
 
-static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
+static const struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
        .open =         snd_gf1_pcm_capture_open,
        .close =        snd_gf1_pcm_capture_close,
        .ioctl =        snd_pcm_lib_ioctl,