BackMerge tag 'v4.12-rc5' into drm-next

[mirror_ubuntu-artful-kernel.git] / drivers / gpu / drm / i915 / intel_uc.h

diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index 69daf4c01cd0ed676842955d5cc7aee2e42e3917..22ae52b17b0fa5b10979e56e8e04a9d477ee64c4 100644 (file)
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -59,6 +59,10 @@ struct drm_i915_gem_request;
  *                available in the work queue (note, the queue is shared,
  *                not per-engine). It is OK for this to be nonzero, but
  *                it should not be huge!
+ *   b_fail: failed to ring the doorbell. This should never happen, unless
+ *           somehow the hardware misbehaves, or maybe if the GuC firmware
+ *           crashes? We probably need to reset the GPU to recover.
+ *   retcode: errno from last guc_submit()
  */
 struct i915_guc_client {
        struct i915_vma *vma;