Thanks Greg for the quick response. I can see Sarah xHCI tree and Matthew's UAS tree but the last commits date 8/9 and 8/1 respectively. It seems Sarah's xHCI tree would end up the official xHCI implementation, but I was wondering about Matthew's UAS tree? Why not merge it into Sarah's? I'd like to use a UAS device, and it seems I'll have to merge the more updated xHCI tree into the older UAS tree into a local branch. That's not a problem. Are most people using Matthew's UAS tree for UAS devices? Is there a consensus on UAS implementation? Luben -- 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