net: reintroduce missing rcu_assign_pointer() calls

commit a9b3cd7f32 (rcu: convert uses of rcu_assign_pointer(x, NULL) to
RCU_INIT_POINTER) did a lot of incorrect changes, since it did a
complete conversion of rcu_assign_pointer(x, y) to RCU_INIT_POINTER(x,
y).

We miss needed barriers, even on x86, when y is not NULL.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c
index c5827614376b..9b9a85ecc4c7 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -390,7 +390,7 @@ int phonet_route_add(struct net_device *dev, u8 daddr)
         daddr = daddr >> 2;
         mutex_lock(&routes->lock);
         if (routes->table[daddr] == NULL) {
-                RCU_INIT_POINTER(routes->table[daddr], dev);
+                rcu_assign_pointer(routes->table[daddr], dev);
                 dev_hold(dev);
                 err = 0;
         }