Comment 19 for bug 1274987

The following commit has landed in upstream v3.14-rc5:

commit a1227f3c1030e96ebc51d677d2f636268845c5fb
Author: Stanislaw Gruszka <email address hidden>
Date: Wed Feb 19 10:29:01 2014 +0100

    usb: ehci: fix deadlock when threadirqs option is used

It has also been cc'd to stable, so it will make it's way into the stable releases through the usual stable update process.

Can you test the latest mainline kernel to confirm it resolves this bug? It can be downloaded from:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-rc5-trusty/