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| author | Stephen Hemminger <shemminger@vyatta.com> | 2011-08-01 16:19:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-08-02 04:29:23 -0700 |
| commit | a9b3cd7f323b2e57593e7215362a7b02fc933e3a (patch) | |
| tree | eba1741956aef3015d5b1a07253bf93c4c1bc7df /net/mac80211/cfg.c | |
| parent | 76f793e3a47139d340185cbc1a314740c09b13d3 (diff) | |
| download | linux-a9b3cd7f323b2e57593e7215362a7b02fc933e3a.tar.gz | |
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>
Diffstat (limited to 'net/mac80211/cfg.c')
| -rw-r--r-- | net/mac80211/cfg.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 3d1b091d9b2e..86f8f49dae2f 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -62,7 +62,7 @@ static int ieee80211_change_iface(struct wiphy *wiphy, if (type == NL80211_IFTYPE_AP_VLAN && params && params->use_4addr == 0) - rcu_assign_pointer(sdata->u.vlan.sta, NULL); + RCU_INIT_POINTER(sdata->u.vlan.sta, NULL); else if (type == NL80211_IFTYPE_STATION && params && params->use_4addr >= 0) sdata->u.mgd.use_4addr = params->use_4addr; @@ -542,7 +542,7 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, sdata->vif.bss_conf.dtim_period = new->dtim_period; - rcu_assign_pointer(sdata->u.ap.beacon, new); + RCU_INIT_POINTER(sdata->u.ap.beacon, new); synchronize_rcu(); @@ -594,7 +594,7 @@ static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) if (!old) return -ENOENT; - rcu_assign_pointer(sdata->u.ap.beacon, NULL); + RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); synchronize_rcu(); kfree(old); @@ -857,7 +857,7 @@ static int ieee80211_change_station(struct wiphy *wiphy, return -EBUSY; } - rcu_assign_pointer(vlansdata->u.vlan.sta, sta); + RCU_INIT_POINTER(vlansdata->u.vlan.sta, sta); } sta->sdata = vlansdata; |