ALSA: firewire-lib: code cleanup for outgoing packet handling

In previous commit, this module has no need to reuse parameters of
incoming packets for outgoing packets anymore. This commit arranges some
needless codes for outgoing packet processing.
Signed-off-by: NTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/firewire/amdtp-stream.c

@@ -411,15 +411,18 @@ static inline int queue_in_packet(struct amdtp_stream *s)
 			    amdtp_stream_get_max_payload(s), false);
 }
 
-static int handle_out_packet(struct amdtp_stream *s, unsigned int data_blocks,
-			     unsigned int cycle, unsigned int syt)
+static int handle_out_packet(struct amdtp_stream *s, unsigned int cycle)
 {
 	__be32 *buffer;
+	unsigned int syt;
+	unsigned int data_blocks;
 	unsigned int payload_length;
 	unsigned int pcm_frames;
 	struct snd_pcm_substream *pcm;
 
 	buffer = s->buffer.packets[s->packet_index].buffer;
+	syt = calculate_syt(s, cycle);
+	data_blocks = calculate_data_blocks(s, syt);
 	pcm_frames = s->process_data_blocks(s, buffer + 2, data_blocks, &syt);
 
 	buffer[0] = cpu_to_be32(ACCESS_ONCE(s->source_node_id_field) |
@@ -588,8 +591,7 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
 				void *private_data)
 {
 	struct amdtp_stream *s = private_data;
-	unsigned int i, syt, packets = header_length / 4;
-	unsigned int data_blocks;
+	unsigned int i, packets = header_length / 4;
 	u32 cycle;
 
 	if (s->packet_index < 0)
@@ -602,10 +604,7 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
 
 	for (i = 0; i < packets; ++i) {
 		cycle = increment_cycle_count(cycle, 1);
-		syt = calculate_syt(s, cycle);
-		data_blocks = calculate_data_blocks(s, syt);
-
-		if (handle_out_packet(s, data_blocks, cycle, syt) < 0) {
+		if (handle_out_packet(s, cycle) < 0) {
 			s->packet_index = -1;
 			amdtp_stream_pcm_abort(s);
 			return;