This patch is to add a helper to get corresponding buffer object with a pointer
to a struct ttm_mem_reg.
Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
include/drm/ttm/ttm_bo_driver.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index d69121c..264e6c3 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -786,6 +786,19 @@ static inline void ttm_bo_unreserve(struct ttm_buffer_object *bo)
reservation_object_unlock(bo->resv);
}
+/**
+ * ttm_mem_reg_to_bo
+ *
+ * @mem: A pointer to a struct ttm_mem_reg.
+ *
+ * Returns corresponding buffer object of the @mem.
+ */
+static inline
+struct ttm_buffer_object *ttm_mem_reg_to_bo(struct ttm_mem_reg *mem)
+{
+ return container_of(mem, struct ttm_buffer_object, mem);
+}
+
/*
* ttm_bo_util.c
*/
--
2.7.4
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