firewire: remove unused struct member

request_generation is internal to fw-ohci and unneeded in fw_card.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/firewire/fw-ohci.c

@@ -178,7 +178,7 @@ struct fw_ohci {
 	struct tasklet_struct bus_reset_tasklet;
 	int node_id;
 	int generation;
-	int request_generation;
+	int request_generation;	/* for timestamping incoming requests */
 	u32 bus_seconds;
 	bool old_uninorth;
 	bool bus_reset_packet_quirk;

drivers/firewire/fw-transaction.h

@@ -224,8 +224,6 @@ struct fw_card {
 
 	int node_id;
 	int generation;
-	/* This is the generation used for timestamping incoming requests. */
-	int request_generation;
 	int current_tlabel, tlabel_mask;
 	struct list_head transaction_list;
 	struct timer_list flush_timer;