> +
> +static struct mtk_adsp_mbox_priv *get_mtk_adsp_mbox_priv(struct mbox_controller *mbox)
> +{
> + return container_of(mbox, struct mtk_adsp_mbox_priv, mbox);
> +}
this could probably be inline
> +
> +static struct mbox_chan *mtk_adsp_mbox_xlate(struct mbox_controller *mbox,
> + const struct of_phandle_args *sp)
> +{
> + return mbox->chans;
> +}
also could probably benefit from inline
