linux-kernel - [PATCH net 03/16] net: ethernet: altera: fix fixed-link phydev leaks

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Message-Id: <1480357509-28074-4-git-send-email-johan@kernel.org>
Date:   Mon, 28 Nov 2016 19:24:56 +0100
From:   Johan Hovold <johan@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Vince Bridgers <vbridger@...nsource.altera.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Fugang Duan <fugang.duan@....com>,
        Pantelis Antoniou <pantelis.antoniou@...il.com>,
        Vitaly Bordug <vbordug@...mvista.com>,
        Claudiu Manoil <claudiu.manoil@...escale.com>,
        Li Yang <leoli@...escale.com>,
        Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
        Felix Fietkau <nbd@...nwrt.org>,
        John Crispin <blogic@...nwrt.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Lars Persson <lars.persson@...s.com>,
        Mugunthan V N <mugunthanvnm@...com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        netdev@...r.kernel.org, nios2-dev@...ts.rocketboards.org,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-mediatek@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org, linux-omap@...r.kernel.org,
        devicetree@...r.kernel.org, Johan Hovold <johan@...nel.org>
Subject: [PATCH net 03/16] net: ethernet: altera: fix fixed-link phydev leaks

Make sure to deregister and free any fixed-link PHY registered using
of_phy_register_fixed_link() on probe errors and on driver unbind.

Fixes: 7cdbc6f74f8e ("altera tse: add support for fixed-links.")
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/net/ethernet/altera/altera_tse_main.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
index bda31f308cc2..6532829b70d2 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c
@@ -819,6 +819,8 @@ static int init_phy(struct net_device *dev)
 
 	if (!phydev) {
 		netdev_err(dev, "Could not find the PHY\n");
+		if (fixed_link)
+			of_phy_deregister_fixed_link(priv->device->of_node);
 		return -ENODEV;
 	}
 
@@ -1545,10 +1547,15 @@ static int altera_tse_probe(struct platform_device *pdev)
 static int altera_tse_remove(struct platform_device *pdev)
 {
 	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct altera_tse_private *priv = netdev_priv(ndev);
 
-	if (ndev->phydev)
+	if (ndev->phydev) {
 		phy_disconnect(ndev->phydev);
 
+		if (of_phy_is_fixed_link(priv->device->of_node))
+			of_phy_deregister_fixed_link(priv->device->of_node);
+	}
+
 	platform_set_drvdata(pdev, NULL);
 	altera_tse_mdio_destroy(ndev);
 	unregister_netdev(ndev);
-- 
2.7.3