linux-kernel - Re: [PATCH V2 net-next] net: fec: add CBS offload support

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Date:   Mon, 13 Feb 2023 18:44:05 +0100
From:   Alexander Lobakin <alexandr.lobakin@...el.com>
To:     Andrew Lunn <andrew@...n.ch>
CC:     <wei.fang@....com>, <shenwei.wang@....com>,
        <xiaoning.wang@....com>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <simon.horman@...igine.com>, <netdev@...r.kernel.org>,
        <linux-imx@....com>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 net-next] net: fec: add CBS offload support

From: Andrew Lunn <andrew@...n.ch>
Date: Mon, 13 Feb 2023 17:21:43 +0100

>>> +	if (!speed) {
>>> +		netdev_err(ndev, "Link speed is 0!\n");
>>
>> ??? Is this possible? If so, why is it checked only here and why can it
>> be possible?
> 
> The obvious way this happens is that there is no link partner, so
> auto-neg has not completed yet. The link speed is unknown.

Sure, but why treat it an error path then?

> 
>      Andrew

Thanks,
Olek