https://bugs.freedesktop.org/show_bug.cgi?id=30188
--- Comment #6 from Tomasz Figa tomasz.figa@gmail.com 2010-09-24 10:58:40 PDT --- I doubt that this issue shares with bug 29738 anything more than similar behavior.
Bug 29738 was related to a single commit and as I said, I have tested kernel revisions from before and after the problematic change and both options didn't work.