drm/ttm: ensure ttm for new node is bound before calling move_notify()

This was true for new TTM_PL_SYSTEM and new TTM_PL_TT cases, but wasn't
the case on TTM_PL_SYSTEM<->TTM_PL_TT moves, which causes trouble on some
paths as nouveau's move_notify() hook requires that the dma addresses be
valid at this point.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 384116afe5b7f4e0d47797253cc12fb0bd417770..a4d38d85909a0254e23fa3a1f0b607814329bf60 100644 (file)
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -392,10 +392,12 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
         * Create and bind a ttm if required.
         */
 
-       if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED) && (bo->ttm == NULL)) {
-               ret = ttm_bo_add_ttm(bo, false);
-               if (ret)
-                       goto out_err;
+       if (!(new_man->flags & TTM_MEMTYPE_FLAG_FIXED)) {
+               if (bo->ttm == NULL) {
+                       ret = ttm_bo_add_ttm(bo, false);
+                       if (ret)
+                               goto out_err;
+               }
 
                ret = ttm_tt_set_placement_caching(bo->ttm, mem->placement);
                if (ret)