[Intel-gfx] [PATCH 0/2] drm/i915: Page flip stuff

[ville.syrjala at linux.intel.com]

This is my quick attempt at aliminating i915_gem_execbuffer_wait_for_flips().

While doing that I noticed that intel_pipe_set_base() never actually waited
for pending flips, while it probably should.

I also spotted another possible problem, for which I didn't provide a patch.
We wait on the pending_flip_queue based on two different variables. One is
the unpin_work, which indicates pending flips, and the other is mm.wedged,
which seems to indicate that the GPU is stuck. I noticed that we don't seem
to call wake_up(pending_flip_queue) after clearing mm.wedged. Is that a bug,
or did I just miss something?