netdev - Re: [PATCH net-next] net: mdio: Only perform gpio reset for PHYs

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Message-Id: <20180103.110833.1858183703371598493.davem@davemloft.net>
Date:   Wed, 03 Jan 2018 11:08:33 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     andrew@...n.ch
Cc:     f.fainelli@...il.com, sean.wang@...iatek.com,
        sergei.shtylyov@...entembedded.com, geert+renesas@...der.be,
        netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: mdio: Only perform gpio reset for PHYs

From: Andrew Lunn <andrew@...n.ch>
Date: Tue,  2 Jan 2018 17:40:26 +0100

> Ethernet switch on the MDIO bus have historically performed their own
> handling of the GPIO reset line. The resent patch to have the MDIO
> core handle the reset has broken the switch drivers, in that they
> cannot claim the GPIO. Some switch drivers need more control over the
> GPIO line than what the MDIO core provides. So restore the historical
> behaviour by only performing a reset of PHYs, not switches.
> 
> Fixes: bafbdd527d56 ("phylib: Add device reset GPIO support")
> Reported-by: Sean Wang <sean.wang@...iatek.com>
> Signed-off-by: Andrew Lunn <andrew@...n.ch>

Applied, thanks Andrew.