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drm/ttm: Add a ttm_ref_object_exists function

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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 <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
This commit is contained in:
Thomas Hellstrom 2014-03-19 13:23:20 +01:00
commit 0d3215e385
2 changed files with 50 additions and 0 deletions
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4
include/drm/ttm/ttm_object.h
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@ -244,6 +244,10 @@ extern void ttm_base_object_unref(struct ttm_base_object **p_base);
extern int ttm_ref_object_add(struct ttm_object_file *tfile,
struct ttm_base_object *base,
enum ttm_ref_type ref_type, bool *existed);
extern bool ttm_ref_object_exists(struct ttm_object_file *tfile,
struct ttm_base_object *base);
/**
* ttm_ref_object_base_unref
*