Comment 10 for bug 401591

@alain57 -- you refer two patches associated with that upstream bug. The second one does look sensible in its own right. The first of those is simply a debug patch and not applicable to the general case, and therefore not applicable to our kernel. There does appear to be an updated patch in the bug, but that is predicated by a bunch of other patches:

According to upstream we would need these patches:
  http://bugzilla.kernel.org/attachment.cgi?id=21801
  http://patchwork.kernel.org/patch/40097/
  http://patchwork.kernel.org/patch/40098/
  http://patchwork.kernel.org/patch/40099/
  http://patchwork.kernel.org/patch/40100/
  http://patchwork.kernel.org/patch/40348/

Then this one:
  http://bugzilla.kernel.org/attachment.cgi?id=22675

I will put together a test kernel with this combination so we can help push this to mainline.