I apologize but I am having the same issue reported in this thread in
[ 5077.573181] xhci_hcd 0000:0a:00.0: ERROR no room on ep ring
I saw no resolution on this issue so I figured I'd step up and see if
you needed an active tester who could reproduce the issue.
I am running Gentoo with a 3.2.2 kernel. I am able to run any kernel
version you need, including random git trees and custom patches. If you
have not solved this yet, please allow me to be your test monkey. If you
have solved this already then sorry for harming the signal to noise
ratio, I could not a find a later message then the one below.