On Mon, 15 Jun 2009, Boaz Harrosh wrote: > You are right, this is not what I understood. I understood that he is hacking > on current USB driver to try and enhance it in such a way that it will support > command queuing at the target. > > He is not currently concerned about any devices but his own HW. But he is certainly > not writing a driver from scratch. He is basing on the current code base. > > Did I understand right? It's hard to tell from what he wrote. Ramya's description of his code is not very complete or precise. > Do you think you have any tips for him. For example at the USB transport side, > what is needed for asynchronous command execution as opposed to what is done now? Nothing extra is needed as far as the lower parts of the USB stack are concerned; they already are fully asynchronous. But the entire transport mechanism of usb-storage would have to be rewritten, since it runs in a single thread and always waits for one command to finish before accepting a new command. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
