hwsim_chanctx_priv
struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);