ALSA: core: Constify snd_device_ops definitions

Now we may declare const for snd_device_ops definitions, so let's do
it for optimization.

There should be no functional changes by this patch.

Link: https://lore.kernel.org/r/20200103081714.9560-5-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/compress_offload.c

@@ -1099,7 +1099,7 @@ static int snd_compress_dev_free(struct snd_device *device)
 int snd_compress_new(struct snd_card *card, int device,
 			int dirn, const char *id, struct snd_compr *compr)
 {
-	static struct snd_device_ops ops = {
+	static const struct snd_device_ops ops = {
 		.dev_free = snd_compress_dev_free,
 		.dev_register = snd_compress_dev_register,
 		.dev_disconnect = snd_compress_dev_disconnect,

sound/core/control.c

@@ -1823,7 +1823,7 @@ static int snd_ctl_dev_free(struct snd_device *device)
  */
 int snd_ctl_create(struct snd_card *card)
 {
-	static struct snd_device_ops ops = {
+	static const struct snd_device_ops ops = {
 		.dev_free = snd_ctl_dev_free,
 		.dev_register =	snd_ctl_dev_register,
 		.dev_disconnect = snd_ctl_dev_disconnect,

sound/core/hwdep.c

@@ -353,7 +353,7 @@ int snd_hwdep_new(struct snd_card *card, char *id, int device,
 {
 	struct snd_hwdep *hwdep;
 	int err;
-	static struct snd_device_ops ops = {
+	static const struct snd_device_ops ops = {
 		.dev_free = snd_hwdep_dev_free,
 		.dev_register = snd_hwdep_dev_register,
 		.dev_disconnect = snd_hwdep_dev_disconnect,

sound/core/jack.c

@@ -201,7 +201,7 @@ int snd_jack_new(struct snd_card *card, const char *id, int type,
 	struct snd_jack *jack;
 	struct snd_jack_kctl *jack_kctl = NULL;
 	int err;
-	static struct snd_device_ops ops = {
+	static const struct snd_device_ops ops = {
 		.dev_free = snd_jack_dev_free,
 #ifdef CONFIG_SND_JACK_INPUT_DEV
 		.dev_register = snd_jack_dev_register,

sound/core/pcm.c

@@ -706,12 +706,12 @@ static int _snd_pcm_new(struct snd_card *card, const char *id, int device,
 {
 	struct snd_pcm *pcm;
 	int err;
-	static struct snd_device_ops ops = {
+	static const struct snd_device_ops ops = {
 		.dev_free = snd_pcm_dev_free,
 		.dev_register =	snd_pcm_dev_register,
 		.dev_disconnect = snd_pcm_dev_disconnect,
 	};
-	static struct snd_device_ops internal_ops = {
+	static const struct snd_device_ops internal_ops = {
 		.dev_free = snd_pcm_dev_free,
 	};
 

sound/core/rawmidi.c

@@ -1621,7 +1621,7 @@ int snd_rawmidi_new(struct snd_card *card, char *id, int device,
 {
 	struct snd_rawmidi *rmidi;
 	int err;
-	static struct snd_device_ops ops = {
+	static const struct snd_device_ops ops = {
 		.dev_free = snd_rawmidi_dev_free,
 		.dev_register = snd_rawmidi_dev_register,
 		.dev_disconnect = snd_rawmidi_dev_disconnect,

sound/core/seq_device.c

@@ -193,7 +193,7 @@ int snd_seq_device_new(struct snd_card *card, int device, const char *id,
 {
 	struct snd_seq_device *dev;
 	int err;
-	static struct snd_device_ops dops = {
+	static const struct snd_device_ops dops = {
 		.dev_free = snd_seq_device_dev_free,
 		.dev_register = snd_seq_device_dev_register,
 		.dev_disconnect = snd_seq_device_dev_disconnect,

sound/core/timer.c

@@ -936,7 +936,7 @@ int snd_timer_new(struct snd_card *card, char *id, struct snd_timer_id *tid,
 {
 	struct snd_timer *timer;
 	int err;
-	static struct snd_device_ops ops = {
+	static const struct snd_device_ops ops = {
 		.dev_free = snd_timer_dev_free,
 		.dev_register = snd_timer_dev_register,
 		.dev_disconnect = snd_timer_dev_disconnect,