[NET]: Protect device namespace inlines with CONFIG_NET

Include sites should not be bothered by whether
CONFIG_NET is set or not when trying to include
benign files like linux/etherdevice.h et al.

From a report by Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 3b54f8a2c055..8576ca928dae 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -741,6 +741,7 @@ struct net_device
 #define NETDEV_ALIGN            32
 #define NETDEV_ALIGN_CONST      (NETDEV_ALIGN - 1)
 
+#ifdef CONFIG_NET
 /*
  * Net namespace inlines
  */
@@ -761,6 +762,7 @@ void dev_net_set(struct net_device *dev, struct net *net)
         dev->nd_net = net;
 #endif
 }
+#endif
 
 /**
  *      netdev_priv - access network device private data