ALSA: dice: unify stop and release method for duplex streams

>From callbacks for pcm and rawmidi interfaces, the functions to stop
and release duplex streams are called at the same time. This commit
merges the two functions.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/dice/dice-midi.c

@@ -40,7 +40,6 @@ static int midi_close(struct snd_rawmidi_substream *substream)
 
 	--dice->substreams_counter;
 	snd_dice_stream_stop_duplex(dice);
-	snd_dice_stream_release_duplex(dice);
 
 	mutex_unlock(&dice->mutex);
 

sound/firewire/dice/dice-pcm.c

@@ -265,7 +265,6 @@ static int pcm_hw_free(struct snd_pcm_substream *substream)
 		--dice->substreams_counter;
 
 	snd_dice_stream_stop_duplex(dice);
-	snd_dice_stream_release_duplex(dice);
 
 	mutex_unlock(&dice->mutex);
 

sound/firewire/dice/dice-stream.c

@@ -336,12 +336,6 @@ int snd_dice_stream_reserve_duplex(struct snd_dice *dice, unsigned int rate)
 	return err;
 }
 
-void snd_dice_stream_release_duplex(struct snd_dice *dice)
-{
-	if (dice->substreams_counter == 0)
-		release_resources(dice);
-}
-
 static int start_streams(struct snd_dice *dice, enum amdtp_stream_direction dir,
 			 unsigned int rate, struct reg_params *params)
 {
@@ -494,6 +488,8 @@ void snd_dice_stream_stop_duplex(struct snd_dice *dice)
 	if (dice->substreams_counter == 0) {
 		if (get_register_params(dice, &tx_params, &rx_params) >= 0)
 			finish_session(dice, &tx_params, &rx_params);
+
+		release_resources(dice);
 	}
 }
 

sound/firewire/dice/dice.h

@@ -210,7 +210,6 @@ void snd_dice_stream_stop_duplex(struct snd_dice *dice);
 int snd_dice_stream_init_duplex(struct snd_dice *dice);
 void snd_dice_stream_destroy_duplex(struct snd_dice *dice);
 int snd_dice_stream_reserve_duplex(struct snd_dice *dice, unsigned int rate);
-void snd_dice_stream_release_duplex(struct snd_dice *dice);
 void snd_dice_stream_update_duplex(struct snd_dice *dice);
 int snd_dice_stream_detect_current_formats(struct snd_dice *dice);