[Intel-gfx] [PATCH 2/2] drm/i915: Don't dereference request if it may have been retired

[Chris Wilson]

Quoting Tvrtko Ursulin (2019-06-18 17:58:02)
> 
> On 18/06/2019 17:19, Chris Wilson wrote:
> > This has count me out on countless occasions, when we retrieve a pointer
> > from the submission/execlists backend, it does not carry a reference to
> > the context or ring. Those are only pinned while the rquest is active,
> > so if we see the request is completed, it may be in the process of being
> > retired and those pointers defunct.
> > 
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110938
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
[snip]
> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Thanks for the quick review, pushed to see if CI wakes up happy in the
morning.
-Chris