ALSA: firewire-lib: code refactoring for local variables

It's better to use int type for loop index. For consistency, the name
of local variable for the number of data block should be plural.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/amdtp-stream.c

@@ -700,7 +700,8 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
 {
 	struct amdtp_stream *s = private_data;
 	const __be32 *ctx_header = header;
-	unsigned int i, packets = header_length / sizeof(*ctx_header);
+	unsigned int packets = header_length / sizeof(*ctx_header);
+	int i;
 
 	if (s->packet_index < 0)
 		return;
@@ -708,7 +709,7 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
 	for (i = 0; i < packets; ++i) {
 		u32 cycle;
 		unsigned int syt;
-		unsigned int data_block;
+		unsigned int data_blocks;
 		__be32 *buffer;
 		unsigned int pcm_frames;
 		struct {
@@ -719,12 +720,13 @@ static void out_stream_callback(struct fw_iso_context *context, u32 tstamp,
 
 		cycle = compute_it_cycle(*ctx_header);
 		syt = calculate_syt(s, cycle);
-		data_block = calculate_data_blocks(s, syt);
+		data_blocks = calculate_data_blocks(s, syt);
 		buffer = s->buffer.packets[s->packet_index].buffer;
-		pcm_frames = s->process_data_blocks(s, buffer, data_block, &syt);
+		pcm_frames = s->process_data_blocks(s, buffer, data_blocks,
+						    &syt);
 
-		build_it_pkt_header(s, cycle, &template.params, data_block, syt,
-				    i);
+		build_it_pkt_header(s, cycle, &template.params, data_blocks,
+				    syt, i);
 
 		if (queue_out_packet(s, &template.params) < 0) {
 			cancel_stream(s);