ALSA: fireface: constify ALSA specific operations

ALSA fireface driver has ALSA specific operations for MIDI/PCM data.
Structured data for the operations can be constified. Additionally,
The structured data can be function local.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/fireface/ff-midi.c

@@ -74,18 +74,6 @@ static void midi_playback_trigger(struct snd_rawmidi_substream *substream,
 	spin_unlock_irqrestore(&ff->lock, flags);
 }
 
-static struct snd_rawmidi_ops midi_capture_ops = {
-	.open		= midi_capture_open,
-	.close		= midi_capture_close,
-	.trigger	= midi_capture_trigger,
-};
-
-static struct snd_rawmidi_ops midi_playback_ops = {
-	.open		= midi_playback_open,
-	.close		= midi_playback_close,
-	.trigger	= midi_playback_trigger,
-};
-
 static void set_midi_substream_names(struct snd_rawmidi_str *stream,
 				     const char *const name)
 {
@@ -99,6 +87,16 @@ static void set_midi_substream_names(struct snd_rawmidi_str *stream,
 
 int snd_ff_create_midi_devices(struct snd_ff *ff)
 {
+	static const struct snd_rawmidi_ops midi_capture_ops = {
+		.open		= midi_capture_open,
+		.close		= midi_capture_close,
+		.trigger	= midi_capture_trigger,
+	};
+	static const struct snd_rawmidi_ops midi_playback_ops = {
+		.open		= midi_playback_open,
+		.close		= midi_playback_close,
+		.trigger	= midi_playback_trigger,
+	};
 	struct snd_rawmidi *rmidi;
 	struct snd_rawmidi_str *stream;
 	int err;

sound/firewire/fireface/ff-pcm.c

@@ -379,7 +379,9 @@ static int pcm_playback_ack(struct snd_pcm_substream *substream)
 	return amdtp_stream_pcm_ack(&ff->rx_stream);
 }
 
-static struct snd_pcm_ops pcm_capture_ops = {
+int snd_ff_create_pcm_devices(struct snd_ff *ff)
+{
+	static const struct snd_pcm_ops pcm_capture_ops = {
 		.open		= pcm_open,
 		.close		= pcm_close,
 		.ioctl		= snd_pcm_lib_ioctl,
@@ -390,9 +392,8 @@ static struct snd_pcm_ops pcm_capture_ops = {
 		.pointer	= pcm_capture_pointer,
 		.ack		= pcm_capture_ack,
 		.page		= snd_pcm_lib_get_vmalloc_page,
-};
-
-static struct snd_pcm_ops pcm_playback_ops = {
+	};
+	static const struct snd_pcm_ops pcm_playback_ops = {
 		.open		= pcm_open,
 		.close		= pcm_close,
 		.ioctl		= snd_pcm_lib_ioctl,
@@ -404,10 +405,7 @@ static struct snd_pcm_ops pcm_playback_ops = {
 		.ack		= pcm_playback_ack,
 		.page		= snd_pcm_lib_get_vmalloc_page,
 		.mmap		= snd_pcm_lib_mmap_vmalloc,
-};
-
-int snd_ff_create_pcm_devices(struct snd_ff *ff)
-{
+	};
 	struct snd_pcm *pcm;
 	int err;