mlx4_ib_db_unmap_user
void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
mlx4_ib_db_unmap_user(context, &cq->db);
mlx4_ib_db_unmap_user(
mlx4_ib_db_unmap_user(mcontext, &qp->db);
mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &qp->db);
mlx4_ib_db_unmap_user(ucontext, &srq->db);
mlx4_ib_db_unmap_user(