[Intel-gfx] [08/11] drm/i915/guc: Wait for doorbell to be inactive before deallocating

[Chris Wilson]

On Fri, Mar 10, 2017 at 08:28:55AM -0800, Oscar Mateo wrote:
> Doorbell release flow requires that we wait for GEN8_DRB_VALID bit to go
> to zero after updating db_status before we call the GuC to release the
> doorbell.

Does this fix some of the '110' errors?
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre