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[85.230.190.116]) by smtp.gmail.com with ESMTPSA id q11sm1079576lfc.92.2019.01.16.02.23.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 16 Jan 2019 02:23:40 -0800 (PST) Received: from johan by xi.terra with local (Exim 4.91) (envelope-from ) id 1gjiMH-0007vm-QY; Wed, 16 Jan 2019 11:23:41 +0100 From: Johan Hovold To: Hauke Mehrtens Cc: Andrew Lunn , Vivien Didelot , Florian Fainelli , "David S. Miller" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , stable Subject: [PATCH 2/3] net: dsa: lantiq_gswip: fix OF child-node lookups Date: Wed, 16 Jan 2019 11:23:34 +0100 Message-Id: <20190116102335.30433-3-johan@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190116102335.30433-1-johan@kernel.org> References: <20190116102335.30433-1-johan@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use the new of_get_compatible_child() helper to look up child nodes to avoid ever matching non-child nodes elsewhere in the tree. Also fix up the related struct device_node leaks. Fixes: 14fceff4771e ("net: dsa: Add Lantiq / Intel DSA driver for vrx200") Cc: stable # 4.20 Cc: Hauke Mehrtens Signed-off-by: Johan Hovold --- drivers/net/dsa/lantiq_gswip.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c index b06c41c98de9..5792674dd4e4 100644 --- a/drivers/net/dsa/lantiq_gswip.c +++ b/drivers/net/dsa/lantiq_gswip.c @@ -1069,10 +1069,10 @@ static int gswip_probe(struct platform_device *pdev) version = gswip_switch_r(priv, GSWIP_VERSION); /* bring up the mdio bus */ - gphy_fw_np = of_find_compatible_node(pdev->dev.of_node, NULL, - "lantiq,gphy-fw"); + gphy_fw_np = of_get_compatible_child(dev->of_node, "lantiq,gphy-fw"); if (gphy_fw_np) { err = gswip_gphy_fw_list(priv, gphy_fw_np, version); + of_node_put(gphy_fw_np); if (err) { dev_err(dev, "gphy fw probe failed\n"); return err; @@ -1080,13 +1080,12 @@ static int gswip_probe(struct platform_device *pdev) } /* bring up the mdio bus */ - mdio_np = of_find_compatible_node(pdev->dev.of_node, NULL, - "lantiq,xrx200-mdio"); + mdio_np = of_get_compatible_child(dev->of_node, "lantiq,xrx200-mdio"); if (mdio_np) { err = gswip_mdio(priv, mdio_np); if (err) { dev_err(dev, "mdio probe failed\n"); - goto gphy_fw; + goto put_mdio_node; } } @@ -1115,7 +1114,8 @@ static int gswip_probe(struct platform_device *pdev) mdio_bus: if (mdio_np) mdiobus_unregister(priv->ds->slave_mii_bus); -gphy_fw: +put_mdio_node: + of_node_put(mdio_np); for (i = 0; i < priv->num_gphy_fw; i++) gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]); return err; @@ -1134,8 +1134,10 @@ static int gswip_remove(struct platform_device *pdev) dsa_unregister_switch(priv->ds); - if (priv->ds->slave_mii_bus) + if (priv->ds->slave_mii_bus) { mdiobus_unregister(priv->ds->slave_mii_bus); + of_node_put(priv->ds->slave_mii_bus->dev.of_node); + } for (i = 0; i < priv->num_gphy_fw; i++) gswip_gphy_fw_remove(priv, &priv->gphy_fw[i]); -- 2.20.1