netdev - Re: [PATCH net] net: dsa: qca8k: Fix port enable for CPU port

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Message-ID: <2009a5fe-6c9c-4326-1161-b6c0b7cc586c@ysoft.com>
Date:   Wed, 25 Sep 2019 09:06:34 +0200
From:   Michal Vokáč <michal.vokac@...ft.com>
To:     Andrew Lunn <andrew@...n.ch>, David Miller <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Vivien Didelot <vivien.didelot@...il.com>
Subject: Re: [PATCH net] net: dsa: qca8k: Fix port enable for CPU port

On 25. 09. 19 2:47, Andrew Lunn wrote:
> The CPU port does not have a PHY connected to it. So calling
> phy_support_asym_pause() results in an Opps. As with other DSA
> drivers, add a guard that the port is a user port.
> 
> Reported-by: Michal Vokáč <michal.vokac@...ft.com>

Thank you for the prompt fix Andrew!

Tested-by: Michal Vokáč <michal.vokac@...ft.com>

> Fixes: 0394a63acfe2 ("net: dsa: enable and disable all ports")
> Signed-off-by: Andrew Lunn <andrew@...n.ch>
> ---
>   drivers/net/dsa/qca8k.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
> index 16f15c93a102..684aa51684db 100644
> --- a/drivers/net/dsa/qca8k.c
> +++ b/drivers/net/dsa/qca8k.c
> @@ -936,6 +936,9 @@ qca8k_port_enable(struct dsa_switch *ds, int port,
>   {
>   	struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
>   
> +	if (!dsa_is_user_port(ds, port))
> +		return 0;
> +
>   	qca8k_port_set_status(priv, port, 1);
>   	priv->port_sts[port].enabled = 1;
>   
>