diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index bca8c35..b6c8a66 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1453,8 +1453,8 @@
 
 static const void *net_namespace(struct device *d)
 {
-	struct net_device *dev;
-	dev = container_of(d, struct net_device, dev);
+	struct net_device *dev = to_net_dev(d);
+
 	return dev_net(dev);
 }