netdev - Re: [PATCH net-next] net: phy: Do not check Link status when loopback is enabled

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Message-Id: <20190906.151140.1592399122729083359.davem@davemloft.net>
Date:   Fri, 06 Sep 2019 15:11:40 +0200 (CEST)
From:   David Miller <davem@...emloft.net>
To:     Jose.Abreu@...opsys.com
Cc:     netdev@...r.kernel.org, Joao.Pinto@...opsys.com, andrew@...n.ch,
        f.fainelli@...il.com, hkallweit1@...il.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net: phy: Do not check Link status when
 loopback is enabled

From: Jose Abreu <Jose.Abreu@...opsys.com>
Date: Thu,  5 Sep 2019 13:43:10 +0200

> While running stmmac selftests I found that in my 1G setup some tests
> were failling when running with PHY loopback enabled.
> 
> It looks like when loopback is enabled the PHY will report that Link is
> down even though there is a valid connection.
> 
> As in loopback mode the data will not be sent anywhere we can bypass the
> logic of checking if Link is valid thus saving unecessary reads.
> 
> Signed-off-by: Jose Abreu <joabreu@...opsys.com>

Applied to net-next.