net: treewide use of RCU_INIT_POINTER
rcu_assign_pointer(ptr, NULL) can be safely replaced by
RCU_INIT_POINTER(ptr, NULL)
(old rcu_assign_pointer() macro was testing the NULL value and could
omit the smp_wmb(), but this had to be removed because of compiler
warnings)
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/ath/carl9170/main.c b/drivers/net/wireless/ath/carl9170/main.c
index f06e069..5518592 100644
--- a/drivers/net/wireless/ath/carl9170/main.c
+++ b/drivers/net/wireless/ath/carl9170/main.c
@@ -446,7 +446,7 @@
mutex_lock(&ar->mutex);
if (IS_ACCEPTING_CMD(ar)) {
- rcu_assign_pointer(ar->beacon_iter, NULL);
+ RCU_INIT_POINTER(ar->beacon_iter, NULL);
carl9170_led_set_state(ar, 0);
@@ -678,7 +678,7 @@
vif_priv->active = false;
bitmap_release_region(&ar->vif_bitmap, vif_id, 0);
ar->vifs--;
- rcu_assign_pointer(ar->vif_priv[vif_id].vif, NULL);
+ RCU_INIT_POINTER(ar->vif_priv[vif_id].vif, NULL);
list_del_rcu(&vif_priv->list);
mutex_unlock(&ar->mutex);
synchronize_rcu();
@@ -716,7 +716,7 @@
WARN_ON(vif_priv->enable_beacon);
vif_priv->enable_beacon = false;
list_del_rcu(&vif_priv->list);
- rcu_assign_pointer(ar->vif_priv[id].vif, NULL);
+ RCU_INIT_POINTER(ar->vif_priv[id].vif, NULL);
if (vif == main_vif) {
rcu_read_unlock();
@@ -1258,7 +1258,7 @@
}
for (i = 0; i < CARL9170_NUM_TID; i++)
- rcu_assign_pointer(sta_info->agg[i], NULL);
+ RCU_INIT_POINTER(sta_info->agg[i], NULL);
sta_info->ampdu_max_len = 1 << (3 + sta->ht_cap.ampdu_factor);
sta_info->ht_sta = true;
@@ -1285,7 +1285,7 @@
struct carl9170_sta_tid *tid_info;
tid_info = rcu_dereference(sta_info->agg[i]);
- rcu_assign_pointer(sta_info->agg[i], NULL);
+ RCU_INIT_POINTER(sta_info->agg[i], NULL);
if (!tid_info)
continue;
@@ -1398,7 +1398,7 @@
spin_unlock_bh(&ar->tx_ampdu_list_lock);
}
- rcu_assign_pointer(sta_info->agg[tid], NULL);
+ RCU_INIT_POINTER(sta_info->agg[tid], NULL);
rcu_read_unlock();
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);