[Intel-gfx] [PATCH 1/4] drm/i915: Check i915_active wait status after flushing

[Chris Wilson]

Quoting Chris Wilson (2020-01-22 18:42:46)
> Double check that the i915_active is finally idle after waiting, and
> flushing its callback, just in case we need to re-activate it, for
> example to keep the vma alive a bit longer due to last minute HW
> activity (e.g. saving the context before unbinding).
> 
> Closes: https://gitlab.freedesktop.org/drm/intel/issues/530
Fixes: 2850748ef876 ("drm/i915: Pull i915_vma_pin under the vm->mutex")
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris