Comment 71 for bug 1640621

Comment #70 is a false alarm.

Hardware Certification have completed testing this -proposed kernel. No regressions were observed, results are available here:
http://people.canonical.com/~hwcert/sru-testing/trusty/3.19.0-75.83~14.04.1/trusty-3.19-proposed.html

http://people.canonical.com/~hwcert/sru-testing/trusty/3.19.0-75.83~14.04.1/trusty-3.19-oem-test-proposed.html