Thomas Hellstrom 0d3215e385 drm/ttm: Add a ttm_ref_object_exists function
A function to be used to check whether a caller has put a ref object
(opened) a struct ttm_base_object

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
2014-03-28 14:19:03 +01:00
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