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Date:   Sat, 28 Nov 2020 20:06:16 +0100
From:   Andrew Lunn <andrew@lunn.ch>
To:     Steen Hegelund <steen.hegelund@microchip.com>,
        Russell King <rmk+kernel@armlinux.org.uk>
Cc:     "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Masahiro Yamada <masahiroy@kernel.org>,
        Lars Povlsen <lars.povlsen@microchip.com>,
        Bjarni Jonasson <bjarni.jonasson@microchip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Microsemi List <microsemi@lists.bootlin.com>,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 2/3] net: sparx5: Add Sparx5 switchdev driver
Message-ID: <20201128190616.GF2191767@lunn.ch>
References: <20201127133307.2969817-1-steen.hegelund@microchip.com>
 <20201127133307.2969817-3-steen.hegelund@microchip.com>
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> +static void sparx5_phylink_mac_config(struct phylink_config *config,
> +				      unsigned int mode,
> +				      const struct phylink_link_state *state)
> +{
> +	struct sparx5_port *port = netdev_priv(to_net_dev(config->dev));
> +	struct sparx5_port_config conf;
> +	int err = 0;
> +
> +	conf = port->conf;
> +	conf.autoneg = state->an_enabled;
> +	conf.pause = state->pause;
> +	conf.duplex = state->duplex;
> +	conf.power_down = false;
> +	conf.portmode = state->interface;
> +
> +	if (state->speed == SPEED_UNKNOWN) {
> +		/* When a SFP is plugged in we use capabilities to
> +		 * default to the highest supported speed
> +		 */

This looks suspicious.

Russell, please could you look through this?

	 Andrew