Re: [PATCH 3/4] drm/i915/guc: Enable interrupts before resuming GuC during runtime resume

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Quoting Sagar Arun Kamble (2018-01-22 08:26:03)
> GuC log streaming needs interrupts enabled prior to GuC resume but
> runtime pm interrupt setup was happening post GuC resume. Fix it.
> While at it, fix the unwinding of steps in the runtime suspend path.
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104695
> Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
> Cc: Michał Winiarski <michal.winiarski@xxxxxxxxx>
> Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
> Cc: Marta Lofstedt <marta.lofstedt@xxxxxxxxx>

Ok, moving the interrupts around shouldn't be too much of an issue
during rpm suspend/resume as we hold the rpm wakeref for the operation.

Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
-Chris
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