Merge tag 'drm-next-2019-03-15' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes and updates from Dave Airlie:
 "A few various fixes pulls and one late etnaviv pull but it was nearly
  all fixes anyways.

  etnaviv:
   - late next pull
   - mmu mapping fix
   - build non-ARM arches
   - misc fixes

  i915:
   - HDCP state handling fix
   - shrinker interaction fix
   - atomic state leak fix

  qxl:
   - kick out framebuffers early fix

  amdgpu:
   - Powerplay fixes
   - DC fixes
   - BACO turned off for now on vega20
   - Locking fix
   - KFD MQD fix
   - gfx9 golden register updates"

* tag 'drm-next-2019-03-15' of git://anongit.freedesktop.org/drm/drm: (43 commits)
  drm/amdgpu: Update gc golden setting for vega family
  drm/amd/powerplay: correct power reading on fiji
  drm/amd/powerplay: set max fan target temperature as 105C
  drm/i915: Relax mmap VMA check
  drm/i915: Fix atomic state leak when resetting HDMI link
  drm/i915: Acquire breadcrumb ref before cancelling
  drm/i915/selftests: Always free spinner on __sseu_prepare error
  drm/i915: Reacquire priolist cache after dropping the engine lock
  drm/i915: Protect i915_active iterators from the shrinker
  drm/i915: HDCP state handling in ddi_update_pipe
  drm/qxl: remove conflicting framebuffers earlier
  drm/fb-helper: call vga_remove_vgacon automatically.
  drm: move i915_kick_out_vgacon to vgaarb
  drm/amd/display: don't call dm_pp_ function from an fpu block
  drm: add __user attribute to ptr_to_compat()
  drm/amdgpu: clear PDs/PTs only after initializing them
  drm/amd/display: Pass app_tf by value rather than by reference
  Revert "drm/amdgpu: use BACO reset on vega20 if platform support"
  drm/amd/powerplay: show the right override pcie parameters
  drm/amd/powerplay: honor the OD settings
  ...

1 files changed, 8 insertions, 10 deletions

diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c
index cacaa1d04d17..09ed90c0ba00 100644
--- a/drivers/gpu/drm/i915/intel_breadcrumbs.c
+++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c
@@ -106,16 +106,6 @@ bool intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine)
 
 			GEM_BUG_ON(!test_bit(I915_FENCE_FLAG_SIGNAL,
 					     &rq->fence.flags));
-			clear_bit(I915_FENCE_FLAG_SIGNAL, &rq->fence.flags);
-
-			/*
-			 * We may race with direct invocation of
-			 * dma_fence_signal(), e.g. i915_request_retire(),
-			 * in which case we can skip processing it ourselves.
-			 */
-			if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
-				     &rq->fence.flags))
-				continue;
 
 			/*
 			 * Queue for execution after dropping the signaling
@@ -123,6 +113,14 @@ bool intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine)
 			 * more signalers to the same context or engine.
 			 */
 			i915_request_get(rq);
+
+			/*
+			 * We may race with direct invocation of
+			 * dma_fence_signal(), e.g. i915_request_retire(),
+			 * so we need to acquire our reference to the request
+			 * before we cancel the breadcrumb.
+			 */
+			clear_bit(I915_FENCE_FLAG_SIGNAL, &rq->fence.flags);
 			list_add_tail(&rq->signal_link, &signal);
 		}