[Intel-gfx] [PATCH v2] drm/i915: Fallback to using unmappable memory for scanout

[Chris Wilson]

On Thu, Mar 19, 2015 at 06:31:04PM +0530, Deepak S wrote:
> should we skip put_fence in overlay_do_put_image ?

Ah interesting point you raise there. That is buggy code fullstop.
We should not be call put_fence if pin_to_display_plane pins the fence.
Techinically the overlay could use a fence, the restriction is more to
do with an artificial limitation on the overlay API, and so the actual
call to i915_gem_object_put_fence() can be removed without any ill
side-effects. Something for the next time someone considers gen2-4 code.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre