On Wed, Jun 09, 2010 at 02:26:00PM -0700, John Youn wrote: > Ok, I'll take a look. John, I think the issue is that the patch assumes that between calls to prepare_ring(), there will be only one TD queued to the ring. But control transfers involve 2-3 TDs, and isochronous transfers may involve even more TDs. So the code in inc_enq() sees a chain bit cleared on the control TX data TRB and does not give the link TRB back yet, which allows queue_trb() to write over it. Since the link TRB activation is only an issue on bulk streams endpoints, can you make the patch revert to the old behavior on non-bulk endpoints? Sarah Sharp -- 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
