drm/amdgpu: wait for moving fence after pinning

We actually need to wait for the moving fence after pinning
the BO to make sure that the pin is completed.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
References: https://lore.kernel.org/dri-devel/20210621151758.2347474-1-daniel.vetter@ffwll.ch/
CC: stable@kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210622114506.106349-3-christian.koenig@amd.com

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
index baa980a..37ec593 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
@@ -214,9 +214,21 @@ static int amdgpu_dma_buf_pin(struct dma_buf_attachment *attach)
 {
        struct drm_gem_object *obj = attach->dmabuf->priv;
        struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
+       int r;
 
        /* pin buffer into GTT */
-       return amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
+       r = amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT);
+       if (r)
+               return r;
+
+       if (bo->tbo.moving) {
+               r = dma_fence_wait(bo->tbo.moving, true);
+               if (r) {
+                       amdgpu_bo_unpin(bo);
+                       return r;
+               }
+       }
+       return 0;
 }
 
 /**