[Intel-gfx] [PATCH 1/2] drm/i915/execlists: Add a couple more validity checks to assert_pending()

[Chris Wilson]

Quoting Chris Wilson (2019-12-03 15:26:30)
> Check the pending request submission is valid: that it at least has a
> reference for the submission and that the request is on the active list.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
-Chris