Hi all: in scsi_init_sgtable, we create sgtable, sdb->table.sgl, and get the page from blk_rq_map_sg. But when the dma address of sdb->table.sgl will be calclated before send the scsi command down to the usb device? Thanks for your help in advance, -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html