[Intel-gfx] [PATCH 07/16] drm/i915/guc/slpc: Enable slpc and add related H2G events

[Michal Wajdeczko]

On 15.07.2021 03:58, Belgaumkar, Vinay wrote:
> 
> 
> On 7/10/2021 10:37 AM, Michal Wajdeczko wrote:
>>
>>
>> On 10.07.2021 03:20, Vinay Belgaumkar wrote:
...
>>>   diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
>>> b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
>>> index e2644a05f298..3e76d4d5f7bb 100644
>>> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
>>> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
>>> @@ -2321,10 +2321,6 @@ void intel_guc_submission_enable(struct
>>> intel_guc *guc)
>>>     void intel_guc_submission_disable(struct intel_guc *guc)
>>>   {
>>> -    struct intel_gt *gt = guc_to_gt(guc);
>>> -
>>> -    GEM_BUG_ON(gt->awake); /* GT should be parked first */
>>
>> if not mistake, can you explain why it was removed ?
> 
> This was part of a different commit. The BUG_ON in
> disable_guc_submission was added with an assumption that it will be
> called only during driver unload and not expected to hold any GT PM
> references. Since this needs to be called from an error scenario during
> slpc enable, remove the BUG_ON. Do we need this as a separate commit?

yes, please

Michal