ALSA: ali5451: 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/pci/ali5451/ali5451.c b/sound/pci/ali5451/ali5451.c
index 8567f1e..39547e3 100644 (file)
--- a/sound/pci/ali5451/ali5451.c
+++ b/sound/pci/ali5451/ali5451.c
@@ -1540,7 +1540,7 @@ static int snd_ali_close(struct snd_pcm_substream *substream)
        return 0;
 }
 
-static struct snd_pcm_ops snd_ali_playback_ops = {
+static const struct snd_pcm_ops snd_ali_playback_ops = {
        .open =         snd_ali_playback_open,
        .close =        snd_ali_playback_close,
        .ioctl =        snd_pcm_lib_ioctl,
@@ -1551,7 +1551,7 @@ static struct snd_pcm_ops snd_ali_playback_ops = {
        .pointer =      snd_ali_playback_pointer,
 };
 
-static struct snd_pcm_ops snd_ali_capture_ops = {
+static const struct snd_pcm_ops snd_ali_capture_ops = {
        .open =         snd_ali_capture_open,
        .close =        snd_ali_close,
        .ioctl =        snd_pcm_lib_ioctl,
@@ -1626,7 +1626,7 @@ static int snd_ali_modem_capture_open(struct snd_pcm_substream *substream)
        return snd_ali_modem_open(substream, 1, ALI_MODEM_IN_CHANNEL);
 }
 
-static struct snd_pcm_ops snd_ali_modem_playback_ops = {
+static const struct snd_pcm_ops snd_ali_modem_playback_ops = {
        .open =         snd_ali_modem_playback_open,
        .close =        snd_ali_close,
        .ioctl =        snd_pcm_lib_ioctl,
@@ -1637,7 +1637,7 @@ static struct snd_pcm_ops snd_ali_modem_playback_ops = {
        .pointer =      snd_ali_pointer,
 };
 
-static struct snd_pcm_ops snd_ali_modem_capture_ops = {
+static const struct snd_pcm_ops snd_ali_modem_capture_ops = {
        .open =         snd_ali_modem_capture_open,
        .close =        snd_ali_close,
        .ioctl =        snd_pcm_lib_ioctl,
@@ -1653,8 +1653,8 @@ struct ali_pcm_description {
        char *name;
        unsigned int playback_num;
        unsigned int capture_num;
-       struct snd_pcm_ops *playback_ops;
-       struct snd_pcm_ops *capture_ops;
+       const struct snd_pcm_ops *playback_ops;
+       const struct snd_pcm_ops *capture_ops;
        unsigned short class;
 };