ALSA: drivers: 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/drivers/aloop.c b/sound/drivers/aloop.c
index 6e02ee0..135adb1 100644 (file)
--- a/sound/drivers/aloop.c
+++ b/sound/drivers/aloop.c
@@ -750,7 +750,7 @@ static int loopback_close(struct snd_pcm_substream *substream)
        return 0;
 }
 
-static struct snd_pcm_ops loopback_playback_ops = {
+static const struct snd_pcm_ops loopback_playback_ops = {
        .open =         loopback_open,
        .close =        loopback_close,
        .ioctl =        snd_pcm_lib_ioctl,
@@ -763,7 +763,7 @@ static struct snd_pcm_ops loopback_playback_ops = {
        .mmap =         snd_pcm_lib_mmap_vmalloc,
 };
 
-static struct snd_pcm_ops loopback_capture_ops = {
+static const struct snd_pcm_ops loopback_capture_ops = {
        .open =         loopback_open,
        .close =        loopback_close,
        .ioctl =        snd_pcm_lib_ioctl,

diff --git a/sound/drivers/ml403-ac97cr.c b/sound/drivers/ml403-ac97cr.c
index d634e10..18fd129 100644 (file)
--- a/sound/drivers/ml403-ac97cr.c
+++ b/sound/drivers/ml403-ac97cr.c
@@ -759,7 +759,7 @@ static int snd_ml403_ac97cr_capture_close(struct snd_pcm_substream *substream)
        return 0;
 }
 
-static struct snd_pcm_ops snd_ml403_ac97cr_playback_ops = {
+static const struct snd_pcm_ops snd_ml403_ac97cr_playback_ops = {
        .open = snd_ml403_ac97cr_playback_open,
        .close = snd_ml403_ac97cr_playback_close,
        .ioctl = snd_pcm_lib_ioctl,
@@ -770,7 +770,7 @@ static struct snd_pcm_ops snd_ml403_ac97cr_playback_ops = {
        .pointer = snd_ml403_ac97cr_pcm_pointer,
 };
 
-static struct snd_pcm_ops snd_ml403_ac97cr_capture_ops = {
+static const struct snd_pcm_ops snd_ml403_ac97cr_capture_ops = {
        .open = snd_ml403_ac97cr_capture_open,
        .close = snd_ml403_ac97cr_capture_close,
        .ioctl = snd_pcm_lib_ioctl,