ALSA: oxfw: unify substreams counter

In former commits, two isochronous contexts are handles at the same
time. This commit unifies stream counters to obsolete them.
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/oxfw/oxfw-midi.c

@@ -19,7 +19,7 @@ static int midi_capture_open(struct snd_rawmidi_substream *substream)
 
 	mutex_lock(&oxfw->mutex);
 
-	oxfw->capture_substreams++;
+	++oxfw->substreams_count;
 	err = snd_oxfw_stream_start_duplex(oxfw, &oxfw->tx_stream, 0, 0);
 
 	mutex_unlock(&oxfw->mutex);
@@ -41,7 +41,7 @@ static int midi_playback_open(struct snd_rawmidi_substream *substream)
 
 	mutex_lock(&oxfw->mutex);
 
-	oxfw->playback_substreams++;
+	++oxfw->substreams_count;
 	err = snd_oxfw_stream_start_duplex(oxfw, &oxfw->rx_stream, 0, 0);
 
 	mutex_unlock(&oxfw->mutex);
@@ -58,7 +58,7 @@ static int midi_capture_close(struct snd_rawmidi_substream *substream)
 
 	mutex_lock(&oxfw->mutex);
 
-	oxfw->capture_substreams--;
+	--oxfw->substreams_count;
 	snd_oxfw_stream_stop_duplex(oxfw);
 
 	mutex_unlock(&oxfw->mutex);
@@ -73,7 +73,7 @@ static int midi_playback_close(struct snd_rawmidi_substream *substream)
 
 	mutex_lock(&oxfw->mutex);
 
-	oxfw->playback_substreams--;
+	--oxfw->substreams_count;
 	snd_oxfw_stream_stop_duplex(oxfw);
 
 	mutex_unlock(&oxfw->mutex);

sound/firewire/oxfw/oxfw-pcm.c

@@ -220,7 +220,7 @@ static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
 
 	if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
 		mutex_lock(&oxfw->mutex);
-		oxfw->capture_substreams++;
+		++oxfw->substreams_count;
 		mutex_unlock(&oxfw->mutex);
 	}
 
@@ -239,7 +239,7 @@ static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
 
 	if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
 		mutex_lock(&oxfw->mutex);
-		oxfw->playback_substreams++;
+		++oxfw->substreams_count;
 		mutex_unlock(&oxfw->mutex);
 	}
 
@@ -253,7 +253,7 @@ static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
 	mutex_lock(&oxfw->mutex);
 
 	if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
-		oxfw->capture_substreams--;
+		--oxfw->substreams_count;
 
 	snd_oxfw_stream_stop_duplex(oxfw);
 
@@ -268,7 +268,7 @@ static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
 	mutex_lock(&oxfw->mutex);
 
 	if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
-		oxfw->playback_substreams--;
+		--oxfw->substreams_count;
 
 	snd_oxfw_stream_stop_duplex(oxfw);
 

sound/firewire/oxfw/oxfw-stream.c

@@ -244,7 +244,7 @@ int snd_oxfw_stream_start_duplex(struct snd_oxfw *oxfw,
 	enum avc_general_plug_dir dir;
 	int err = 0;
 
-	if (oxfw->capture_substreams == 0 && oxfw->playback_substreams == 0)
+	if (oxfw->substreams_count == 0)
 		return -EIO;
 
 	// Considering JACK/FFADO streaming:
@@ -323,7 +323,7 @@ int snd_oxfw_stream_start_duplex(struct snd_oxfw *oxfw,
 
 void snd_oxfw_stream_stop_duplex(struct snd_oxfw *oxfw)
 {
-	if (oxfw->capture_substreams == 0 && oxfw->playback_substreams == 0) {
+	if (oxfw->substreams_count == 0) {
 		amdtp_stream_stop(&oxfw->rx_stream);
 		cmp_connection_break(&oxfw->in_conn);
 

sound/firewire/oxfw/oxfw.h

@@ -52,8 +52,7 @@ struct snd_oxfw {
 	struct cmp_connection in_conn;
 	struct amdtp_stream tx_stream;
 	struct amdtp_stream rx_stream;
-	unsigned int capture_substreams;
-	unsigned int playback_substreams;
+	unsigned int substreams_count;
 
 	unsigned int midi_input_ports;
 	unsigned int midi_output_ports;