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/agg-rx.c b/net/mac80211/agg-rx.c
index fd1aaf2..9b5bd8c 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -69,7 +69,7 @@
if (!tid_rx)
return;
- rcu_assign_pointer(sta->ampdu_mlme.tid_rx[tid], NULL);
+ RCU_INIT_POINTER(sta->ampdu_mlme.tid_rx[tid], NULL);
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Rx BA session stop requested for %pM tid %u\n",
@@ -340,7 +340,7 @@
status = WLAN_STATUS_SUCCESS;
/* activate it for RX */
- rcu_assign_pointer(sta->ampdu_mlme.tid_rx[tid], tid_agg_rx);
+ RCU_INIT_POINTER(sta->ampdu_mlme.tid_rx[tid], tid_agg_rx);
if (timeout)
mod_timer(&tid_agg_rx->session_timer, TU_TO_EXP_TIME(timeout));
