rcu: convert uses of rcu_assign_pointer(x, NULL) to RCU_INIT_POINTER
When assigning a NULL value to an RCU protected pointer, no barrier
is needed. The rcu_assign_pointer, used to handle that but will soon
change to not handle the special case.
Convert all rcu_assign_pointer of NULL value.
//smpl
@@ expression P; @@
- rcu_assign_pointer(P, NULL)
+ RCU_INIT_POINTER(P, NULL)
// </smpl>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 556e7e6..c798b43 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -456,7 +456,7 @@
BSS_CHANGED_BEACON_ENABLED);
/* remove beacon */
- rcu_assign_pointer(sdata->u.ap.beacon, NULL);
+ RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
synchronize_rcu();
kfree(old_beacon);