net-sysfs: use to_net_dev in net_namespace()

Use to_net_dev() instead of open-coding it.

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index bca8c35..b6c8a66 100644 (file)
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1453,8 +1453,8 @@ static void netdev_release(struct device *d)
 
 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);
 }