[Intel-gfx] [PATCH 08/10] drm/i915/guc: Fix GuC HW/SW state cleanup in unload path

[Oscar Mateo]

<SNIP>


On 09/17/2017 05:17 AM, Sagar Arun Kamble wrote:
> Teardown of GuC HW/SW state was not properly done in unload path.
> guc_submission_disable was called as part of intel_uc_fini_hw which
> happens post gem_unload in the i915_driver_unload path.
> s/i915_gem_fini/i915_gem_cleanup as it looks more suitable as that
> function does cleanup.
> To differentiate the tasks during suspend and unload w.r.t GuC this
> patch introduces new function i915_gem_fini which in addition to
> disabling GuC interfaces also disables GuC submission during which
> communication with GuC is needed for destroying doorbell.
> i915_gem_fini is copy of i915_gem_suspend with difference w.r.t
> GuC operations. To achieve this, new helpers i915_gem_context_suspend
> and i915_gem_suspend_complete are prepared.
>

Sagar, I just realized this patch would make this comment in 
guc_client_free superfluous, right?:

     /* FIXME: in many cases, by the time we get here the GuC has been
      * reset, so we cannot destroy the doorbell properly. Ignore the
      * error message for now */

Can you make sure you remove it in this patch?

Thanks!