--- linux-2.6.14/drivers/ieee1394/sbp2.c	2005-12-08 02:05:27.000000000 +0000
+++ linux/drivers/ieee1394/sbp2.c	2005-12-08 02:06:18.000000000 +0000
@@ -1760,6 +1760,10 @@
 	command_orb->misc |= ORB_SET_SPEED(scsi_id->speed_code);
 	command_orb->misc |= ORB_SET_NOTIFY(1);		/* Notify us when complete */
 
+	/* check for duff DMA transfer direction with a zero length buffer */
+	if (scsi_request_bufflen == 0)
+		dma_dir = DMA_NONE;
+
 	/*
 	 * Get the direction of the transfer. If the direction is unknown, then use our
 	 * goofy table as a back-up.