Comment 2 for bug 1604058

This may be due to the following commit:
6ad3777 xhci: Cleanup only when releasing primary hcd

I built a test kernel with this commit reverted. It can be downloaded from:

http://kernel.ubuntu.com/~jsalisbury/lp1604058/

Can you test this kernel and see if it resolves this bug?

Note that you need to install both the linux-image and linux-image-extra .deb packages.