diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2012-01-12 04:41:32 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-01-12 12:26:56 -0800 |
| commit | cf778b00e96df6d64f8e21b8395d1f8a859ecdc7 (patch) | |
| tree | 4cc157d564bd65d687bdf722af3202e9e277ea98 /net/mac80211 | |
| parent | 9ee6045f09a7875ebe55b9942b232a19076b157b (diff) | |
| download | op-kernel-dev-cf778b00e96df6d64f8e21b8395d1f8a859ecdc7.zip op-kernel-dev-cf778b00e96df6d64f8e21b8395d1f8a859ecdc7.tar.gz | |
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>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/agg-rx.c | 2 | ||||
| -rw-r--r-- | net/mac80211/cfg.c | 4 | ||||
| -rw-r--r-- | net/mac80211/ibss.c | 2 | ||||
| -rw-r--r-- | net/mac80211/sta_info.c | 6 |
4 files changed, 7 insertions, 7 deletions
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c index 96debba..1068f66 100644 --- a/net/mac80211/agg-rx.c +++ b/net/mac80211/agg-rx.c @@ -332,7 +332,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local, status = WLAN_STATUS_SUCCESS; /* activate it for RX */ - RCU_INIT_POINTER(sta->ampdu_mlme.tid_rx[tid], tid_agg_rx); + rcu_assign_pointer(sta->ampdu_mlme.tid_rx[tid], tid_agg_rx); if (timeout) mod_timer(&tid_agg_rx->session_timer, TU_TO_EXP_TIME(timeout)); diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 850bb96..e60df48 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -616,7 +616,7 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, sdata->vif.bss_conf.dtim_period = new->dtim_period; - RCU_INIT_POINTER(sdata->u.ap.beacon, new); + rcu_assign_pointer(sdata->u.ap.beacon, new); synchronize_rcu(); @@ -1033,7 +1033,7 @@ static int ieee80211_change_station(struct wiphy *wiphy, return -EBUSY; } - RCU_INIT_POINTER(vlansdata->u.vlan.sta, sta); + rcu_assign_pointer(vlansdata->u.vlan.sta, sta); } sta->sdata = vlansdata; diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index f8a32bf..b3d76b7 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -207,7 +207,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata, *pos++ = 0; /* U-APSD no in use */ } - RCU_INIT_POINTER(ifibss->presp, skb); + rcu_assign_pointer(ifibss->presp, skb); sdata->vif.bss_conf.beacon_int = beacon_int; sdata->vif.bss_conf.basic_rates = basic_rates; diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index b197136..3c428d4 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -73,7 +73,7 @@ static int sta_info_hash_del(struct ieee80211_local *local, if (!s) return -ENOENT; if (s == sta) { - RCU_INIT_POINTER(local->sta_hash[STA_HASH(sta->sta.addr)], + rcu_assign_pointer(local->sta_hash[STA_HASH(sta->sta.addr)], s->hnext); return 0; } @@ -83,7 +83,7 @@ static int sta_info_hash_del(struct ieee80211_local *local, s = rcu_dereference_protected(s->hnext, lockdep_is_held(&local->sta_mtx)); if (rcu_access_pointer(s->hnext)) { - RCU_INIT_POINTER(s->hnext, sta->hnext); + rcu_assign_pointer(s->hnext, sta->hnext); return 0; } @@ -226,7 +226,7 @@ static void sta_info_hash_add(struct ieee80211_local *local, { lockdep_assert_held(&local->sta_mtx); sta->hnext = local->sta_hash[STA_HASH(sta->sta.addr)]; - RCU_INIT_POINTER(local->sta_hash[STA_HASH(sta->sta.addr)], sta); + rcu_assign_pointer(local->sta_hash[STA_HASH(sta->sta.addr)], sta); } static void sta_unblock(struct work_struct *wk) |
