[Intel-gfx] [PATCH v5] drm/i915: Be more careful to drop the GT wakeref

[Imre Deak]

On pe, 2016-11-18 at 11:50 +0000, Chris Wilson wrote:
> On Fri, Nov 18, 2016 at 01:22:11PM +0200, Joonas Lahtinen wrote:
> > On ti, 2016-11-15 at 16:46 +0000, Chris Wilson wrote:
> > > @@ -218,7 +218,12 @@ static void i915_gem_request_retire(struct
> > > drm_i915_gem_request *request)
> > >  	 */
> > >  	list_del(&request->ring_link);
> > >  	request->ring->last_retired_head = request->postfix;
> > > -	request->i915->gt.active_requests--;
> > > +	if (!--request->i915->gt.active_requests) {
> > 
> > BUG_ON(!request->i915->gt.active_requests) at the top?
> > 
> > Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> 
> Thanks. Hmm, this may catch that one-off report of
> GEM_BUG_ON(gt.awake)
> upon suspend. I don't think that made it to bugzilla.

This one?:
https://bugs.freedesktop.org/show_bug.cgi?id=98670

> -Chris
>