drm/ttm: Fix a deadlock if the target BO is not idle during swap

[linux-2.6-microblaze.git] / drivers / gpu / drm / ttm / ttm_bo.c

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index ea4add2..bb9e02c 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -1160,9 +1160,9 @@ int ttm_bo_swapout(struct ttm_buffer_object *bo, struct ttm_operation_ctx *ctx,
        }
 
        if (bo->deleted) {
-               ttm_bo_cleanup_refs(bo, false, false, locked);
+               ret = ttm_bo_cleanup_refs(bo, false, false, locked);
                ttm_bo_put(bo);
-               return 0;
+               return ret == -EBUSY ? -ENOSPC : ret;
        }
 
        ttm_bo_del_from_lru(bo);
@@ -1216,7 +1216,7 @@ out:
        if (locked)
                dma_resv_unlock(bo->base.resv);
        ttm_bo_put(bo);
-       return ret;
+       return ret == -EBUSY ? -ENOSPC : ret;
 }
 
 void ttm_bo_tt_destroy(struct ttm_buffer_object *bo)