[PATCH 21/65] drm/amdgpu: use dma-fence annotations for gpu reset code

[Daniel Vetter <daniel.vetter@ffwll.ch>]

To improve coverage also annotate the gpu reset code itself, since
that's called from other places than drm/scheduler (which is already
annotated). Annotations nests, so this doesn't break anything, and
allows easier testing.

Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: linux-rdma@vger.kernel.org
Cc: amd-gfx@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index e8b41756c9f9..029a026ecfa9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4496,6 +4496,9 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 	int i, r = 0;
 	bool need_emergency_restart = false;
 	bool audio_suspended = false;
+	bool fence_cookie;
+
+	fence_cookie = dma_fence_begin_signalling();
 
 	/**
 	 * Special case: RAS triggered and full reset isn't supported
@@ -4529,6 +4532,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 			DRM_INFO("Bailing on TDR for s_job:%llx, hive: %llx as another already in progress",
 				job ? job->base.id : -1, hive->hive_id);
 			amdgpu_put_xgmi_hive(hive);
+			dma_fence_end_signalling(fence_cookie);
 			return 0;
 		}
 		mutex_lock(&hive->hive_lock);
@@ -4541,8 +4545,10 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 	 */
 	INIT_LIST_HEAD(&device_list);
 	if (adev->gmc.xgmi.num_physical_nodes > 1) {
-		if (!hive)
+		if (!hive) {
+			dma_fence_end_signalling(fence_cookie);
 			return -ENODEV;
+		}
 		if (!list_is_first(&adev->gmc.xgmi.head, &hive->device_list))
 			list_rotate_to_front(&adev->gmc.xgmi.head, &hive->device_list);
 		device_list_handle = &hive->device_list;
@@ -4556,8 +4562,6 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 		if (!amdgpu_device_lock_adev(tmp_adev, hive)) {
 			dev_info(tmp_adev->dev, "Bailing on TDR for s_job:%llx, as another already in progress",
 				  job ? job->base.id : -1);
-			r = 0;
-			goto skip_recovery;
 		}
 
 		/*
@@ -4699,6 +4703,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 
 	if (r)
 		dev_info(adev->dev, "GPU reset end with ret = %d\n", r);
+	dma_fence_end_signalling(fence_cookie);
 	return r;
 }
 
-- 
2.28.0