drm/radeon: 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/20210622114506.106349-2-christian.koenig@amd.com

diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
index 42a8794..4a90807 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_prime.c
+++ b/drivers/gpu/drm/radeon/radeon_prime.c
@@ -77,9 +77,19 @@ int radeon_gem_prime_pin(struct drm_gem_object *obj)
 
        /* pin buffer into GTT */
        ret = radeon_bo_pin(bo, RADEON_GEM_DOMAIN_GTT, NULL);
-       if (likely(ret == 0))
-               bo->prime_shared_count++;
-
+       if (unlikely(ret))
+               goto error;
+
+       if (bo->tbo.moving) {
+               ret = dma_fence_wait(bo->tbo.moving, false);
+               if (unlikely(ret)) {
+                       radeon_bo_unpin(bo);
+                       goto error;
+               }
+       }
+
+       bo->prime_shared_count++;
+error:
        radeon_bo_unreserve(bo);
        return ret;
 }