net: CONFIG_NET_NS reduction

Use read_pnet() and write_pnet() to reduce number of ifdef CONFIG_NET_NS

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index b44a2e5..e7ebeb8 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1330,26 +1330,15 @@
 	char priv[0] __attribute__((__aligned__(NETDEV_ALIGN)));
 };
 
-#ifdef CONFIG_NET_NS
 static inline struct net *wiphy_net(struct wiphy *wiphy)
 {
-	return wiphy->_net;
+	return read_pnet(&wiphy->_net);
 }
 
 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
 {
-	wiphy->_net = net;
+	write_pnet(&wiphy->_net, net);
 }
-#else
-static inline struct net *wiphy_net(struct wiphy *wiphy)
-{
-	return &init_net;
-}
-
-static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net)
-{
-}
-#endif
 
 /**
  * wiphy_priv - return priv from wiphy