diff options
Diffstat (limited to 'include/drm/ttm/ttm_bo_api.h')
| -rw-r--r-- | include/drm/ttm/ttm_bo_api.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 8f619f499e55..de5f992de928 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -463,7 +463,11 @@ size_t ttm_bo_dma_acc_size(struct ttm_bo_device *bdev, * As this object may be part of a larger structure, this function, * together with the @destroy function, * enables driver-specific objects derived from a ttm_buffer_object. - * On successful return, the object kref and list_kref are set to 1. + * + * On successful return, the caller owns an object kref to @bo. The kref and + * list_kref are usually set to 1, but note that in some situations, other + * tasks may already be holding references to @bo as well. + * * If a failure occurs, the function will call the @destroy function, or * kfree() if @destroy is NULL. Thus, after a failure, dereferencing @bo is * illegal and will likely cause memory corruption. |