From a9b3cd7f323b2e57593e7215362a7b02fc933e3a Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Mon, 1 Aug 2011 16:19:00 +0000 Subject: 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) // Signed-off-by: Stephen Hemminger Acked-by: Paul E. McKenney Signed-off-by: David S. Miller --- net/mac80211/ibss.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'net/mac80211/ibss.c') diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 56c24cabf26d..4f9235b18a03 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -84,7 +84,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, drv_reset_tsf(local); skb = ifibss->skb; - rcu_assign_pointer(ifibss->presp, NULL); + RCU_INIT_POINTER(ifibss->presp, NULL); synchronize_rcu(); skb->data = skb->head; skb->len = 0; @@ -184,7 +184,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, *pos++ = 0; /* U-APSD no in use */ } - rcu_assign_pointer(ifibss->presp, skb); + RCU_INIT_POINTER(ifibss->presp, skb); sdata->vif.bss_conf.beacon_int = beacon_int; sdata->vif.bss_conf.basic_rates = basic_rates; @@ -995,7 +995,7 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata) kfree(sdata->u.ibss.ie); skb = rcu_dereference_protected(sdata->u.ibss.presp, lockdep_is_held(&sdata->u.ibss.mtx)); - rcu_assign_pointer(sdata->u.ibss.presp, NULL); + RCU_INIT_POINTER(sdata->u.ibss.presp, NULL); sdata->vif.bss_conf.ibss_joined = false; ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_IBSS); -- cgit v1.2.3-70-g09d2