netdev - Re: [PATCH net-next] net: phy: improve genphy_read

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Message-ID: <20190331145813.GD20636@lunn.ch>
Date:   Sun, 31 Mar 2019 16:58:13 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Heiner Kallweit <hkallweit1@...il.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        David Miller <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] net: phy: improve genphy_read_status

> - In auto-neg case, skip populating lp_advertising if we
>   don't have a link. This avoids quite some unnecessary
>   MDIO reads in case of phylib polling mode.

Hi Heiner

Could it be that we don't have a link because what the partner is
advertising does not intersect with what we are advertising?

Hence knowing what it is adverting is actually useful in this case?

      Andrew