netdev - [PATCH net 7/7] net: mscc: ocelot: unregister net devices on unbind

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200915182229.69529-8-olteanv@gmail.com>
Date:   Tue, 15 Sep 2020 21:22:29 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     davem@...emloft.net, netdev@...r.kernel.org
Cc:     yangbo.lu@....com, xiaoliang.yang_1@....com,
        UNGLinuxDriver@...rochip.com, claudiu.manoil@....com,
        alexandre.belloni@...tlin.com, andrew@...n.ch,
        vivien.didelot@...il.com, f.fainelli@...il.com, kuba@...nel.org
Subject: [PATCH net 7/7] net: mscc: ocelot: unregister net devices on unbind

From: Vladimir Oltean <vladimir.oltean@....com>

This driver was not unregistering its network interfaces on unbind.
Now it is.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/ethernet/mscc/ocelot_vsc7514.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 851e79e11aed..b8f895483653 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -896,6 +896,26 @@ static struct ptp_clock_info ocelot_ptp_clock_info = {
 	.enable		= ocelot_ptp_enable,
 };
 
+static void mscc_ocelot_release_ports(struct ocelot *ocelot)
+{
+	int port;
+
+	for (port = 0; port < ocelot->num_phys_ports; port++) {
+		struct ocelot_port_private *priv;
+		struct ocelot_port *ocelot_port;
+
+		ocelot_port = ocelot->ports[port];
+		if (!ocelot_port)
+			continue;
+
+		priv = container_of(ocelot_port, struct ocelot_port_private,
+				    port);
+
+		unregister_netdev(priv->dev);
+		free_netdev(priv->dev);
+	}
+}
+
 static int mscc_ocelot_init_ports(struct platform_device *pdev)
 {
 	struct ocelot *ocelot = platform_get_drvdata(pdev);
@@ -1008,6 +1028,7 @@ static int mscc_ocelot_init_ports(struct platform_device *pdev)
 
 out_put_ports:
 	of_node_put(ports);
+	mscc_ocelot_release_ports(ocelot);
 	return err;
 }
 
@@ -1132,6 +1153,7 @@ static int mscc_ocelot_remove(struct platform_device *pdev)
 	struct ocelot *ocelot = platform_get_drvdata(pdev);
 
 	ocelot_deinit_timestamp(ocelot);
+	mscc_ocelot_release_ports(ocelot);
 	ocelot_deinit(ocelot);
 	unregister_switchdev_blocking_notifier(&ocelot_switchdev_blocking_nb);
 	unregister_switchdev_notifier(&ocelot_switchdev_nb);
-- 
2.25.1