linux-kernel - Re: [PATCH net-next 1/1] net: phy: Add additional logics on probing C45 PHY devices

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Date:   Thu, 12 Nov 2020 16:21:51 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Wong Vee Khee <vee.khee.wong@...el.com>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        Voon Wei Feng <weifeng.voon@...el.com>
Subject: Re: [PATCH net-next 1/1] net: phy: Add additional logics on probing
 C45 PHY devices

On Thu, Nov 12, 2020 at 11:03:51PM +0800, Wong Vee Khee wrote:
> For clause 45 PHY, introduce additional logics in get_phy_c45_ids() to
> check if there is at least one valid device ID, return 0 on true, and
> -ENODEV otherwise.

So does this mean you have a device which uses c45 and does not have
any valid IDs? What device is it? Can it be used via c22?

I would like to know more about why this is needed, since it sounds
like a workaround for a broken device.

     Andrew