Re: [PATCH net-next 2/6] net: dsa: motorcomm: Rely on port isolation for CPU port

[Andrew Lunn]

> -	ctrl = ~priv->cpu_ports_mask;
> -	res = yt921x_reg_write(priv, YT921X_PORTn_ISOLATION(port), ctrl);
> -	if (res)
> -		return res;
> +	if (!(BIT(port) & priv->cpu_ports_mask)) {

	if (!dsa_is_cpu_port(ds, port) ?