https://bugs.freedesktop.org/show_bug.cgi?id=72602
--- Comment #3 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #2)
Will it suffice to cherry-pick http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ ?id=14ac88af156efcefac9ba3cf249ae84f9ff71d37 to get that behaviour in 3.12?
I think that should do it. I don't remember if there are any dependencies on previous patches.