[PATCH] drm/ttm: reserve the move fence space first

[Prike Liang]

Reserve the move fence space before adding the fence
to reserve objection.

Signed-off-by: Prike Liang <Prike.Liang at amd.com>
---
 drivers/gpu/drm/ttm/ttm_bo.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index f9a84d07dcbc..d5eab0078360 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -646,9 +646,15 @@ static int ttm_bo_add_move_fence(struct ttm_buffer_object *bo,
 		return ret;
 	}
 
+	ret = dma_resv_reserve_fences(bo->base.resv, 1);
+	if (ret) {
+		pr_err("Resv shared move fence space failed\n");
+		goto err_resv;
+	}
+
 	dma_resv_add_fence(bo->base.resv, fence, DMA_RESV_USAGE_KERNEL);
 
-	ret = dma_resv_reserve_fences(bo->base.resv, 1);
+err_resv:
 	dma_fence_put(fence);
 	return ret;
 }
-- 
2.34.1