The first link on this comment is the patch that "caused" Keith's rewrite. If you want to fully understand the problem, I recommend you to read all messages on that thread and also all replies to Keith's patch series (sent a few days after the discussion).
More information to help:
If we're going to do a "minimal" backport we need:
- this patch: http:// lists.freedeskt op.org/ archives/ intel-gfx/ 2011-September/ 012172. html lists.freedeskt op.org/ archives/ intel-gfx/ 2011-September/ 012198. html
- follow the comments here: http://
The first link on this comment is the patch that "caused" Keith's rewrite. If you want to fully understand the problem, I recommend you to read all messages on that thread and also all replies to Keith's patch series (sent a few days after the discussion).