tools/firewire: nosy-dump: break up a deeply nested function

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

tools/firewire/nosy-dump.c

@@ -487,18 +487,12 @@ static const struct packet_info packet_info[] = {
 };
 
 static int
-handle_packet(uint32_t *data, size_t length)
+handle_request_packet(uint32_t *data, size_t length)
 {
-	if (length == 0) {
-		printf("bus reset\r\n");
-		clear_pending_transaction_list();
-	} else if (length > sizeof(struct phy_packet)) {
 	struct link_packet *p = (struct link_packet *) data;
 	struct subaction *sa, *prev;
 	struct link_transaction *t;
 
-		switch (packet_info[p->common.tcode].type) {
-		case PACKET_REQUEST:
 	t = link_transaction_lookup(p->common.source, p->common.destination,
 			p->common.tlabel);
 	sa = subaction_create(data, length);
@@ -553,9 +547,17 @@ handle_packet(uint32_t *data, size_t length)
 		/* check that retry protocol is respected. */
 		break;
 	}
-			break;
 
-		case PACKET_RESPONSE:
+	return 1;
+}
+
+static int
+handle_response_packet(uint32_t *data, size_t length)
+{
+	struct link_packet *p = (struct link_packet *) data;
+	struct subaction *sa, *prev;
+	struct link_transaction *t;
+
 	t = link_transaction_lookup(p->common.destination, p->common.source,
 			p->common.tlabel);
 	if (list_empty(&t->request_list)) {
@@ -618,7 +620,24 @@ handle_packet(uint32_t *data, size_t length)
 		break;
 	}
 
-			break;
+	return 1;
+}
+
+static int
+handle_packet(uint32_t *data, size_t length)
+{
+	if (length == 0) {
+		printf("bus reset\r\n");
+		clear_pending_transaction_list();
+	} else if (length > sizeof(struct phy_packet)) {
+		struct link_packet *p = (struct link_packet *) data;
+
+		switch (packet_info[p->common.tcode].type) {
+		case PACKET_REQUEST:
+			return handle_request_packet(data, length);
+
+		case PACKET_RESPONSE:
+			return handle_response_packet(data, length);
 
 		case PACKET_OTHER:
 		case PACKET_RESERVED: