mxc_isi_async_subdev
struct mxc_isi_async_subdev *masd;
struct mxc_isi_async_subdev);
static inline struct mxc_isi_async_subdev *
return container_of(asd, struct mxc_isi_async_subdev, asd);
struct mxc_isi_async_subdev *masd = asd_to_mxc_isi_async_subdev(asc);