Comment 12 for bug 1406867

We are in a bit of a mess here. To clean this up and end up with a consistant fix applied to all the prime releases I am submitting patch kits to apply this fix for Trusty, and revert the current fix and apply this to Utopic. I have also applied this fix to both Vivid v3.18 and v3.19 based kernels going forward. Once this has all made it through process we should have a single common fix on all releases Trusty and later.