linux-kernel - Re: [PATCH v2 3/3] net: ethernet: add ag71xx driver

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Message-Id: <20190419.143519.94034508850689697.davem@davemloft.net>
Date:   Fri, 19 Apr 2019 14:35:19 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     o.rempel@...gutronix.de
Cc:     paul.burton@...s.com, ralf@...ux-mips.org, jhogan@...nel.org,
        robh+dt@...nel.org, jcliburn@...il.com, chris.snook@...il.com,
        mark.rutland@....com, kernel@...gutronix.de,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, john@...ozen.org, nbd@....name,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2 3/3] net: ethernet: add ag71xx driver

From: Oleksij Rempel <o.rempel@...gutronix.de>
Date: Thu, 18 Apr 2019 07:26:20 +0200

> +static int ag71xx_remove(struct platform_device *pdev)
> +{
> +	struct net_device *ndev = platform_get_drvdata(pdev);
> +	struct ag71xx *ag;
> +
> +	if (!ndev)
> +		return 0;
> +
> +	ag = netdev_priv(ndev);
> +	ag71xx_phy_disconnect(ag);
> +	ag71xx_mdio_remove(ag);
> +	unregister_netdev(ndev);
> +	platform_set_drvdata(pdev, NULL);
> +
> +	return 0;
> +}

You should unregister the netdev before you disconnect the PHY and remove
the MDIO.

Also you need to call free_netdev() afterwards otherwise you will leak it.