firewire: Implement basic isochronous receive functionality.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h
index 89c6dda..9e92eda 100644
--- a/drivers/firewire/fw-transaction.h
+++ b/drivers/firewire/fw-transaction.h
@@ -354,6 +354,7 @@
 	int type;
 	int channel;
 	int speed;
+	size_t header_size;
 	fw_iso_callback_t callback;
 	void *callback_data;
 };
@@ -369,10 +370,8 @@
 fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card);
 
 struct fw_iso_context *
-fw_iso_context_create(struct fw_card *card, int type,
-		      fw_iso_callback_t callback,
-		      void *callback_data);
-
+fw_iso_context_create(struct fw_card *card, int type, size_t header_size,
+		      fw_iso_callback_t callback, void *callback_data);
 
 void
 fw_iso_context_destroy(struct fw_iso_context *ctx);