From c2aa288548a29d909ec875e81137fb0dbbb420b7 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Tue, 8 Jul 2008 23:01:52 -0700
Subject: [PATCH] mac80211: Decrease number of explicit ->tx_queue references.
Accomplish this by using local variables.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/mac80211/main.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 12aeaf78ae75..2968baa66b91 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -570,6 +570,7 @@ static int ieee80211_stop(struct net_device *dev)
int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
{
struct ieee80211_local *local = hw_to_local(hw);
+ struct netdev_queue *txq;
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata;
u16 start_seq_num = 0;
@@ -636,7 +637,8 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
/* ensure that TX flow won't interrupt us
* until the end of the call to requeue function */
- spin_lock_bh(&local->mdev->tx_queue.lock);
+ txq = &local->mdev->tx_queue;
+ spin_lock_bh(&txq->lock);
/* create a new queue for this aggregation */
ret = ieee80211_ht_agg_queue_add(local, sta, tid);
@@ -675,7 +677,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
/* Will put all the packets in the new SW queue */
ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
- spin_unlock_bh(&local->mdev->tx_queue.lock);
+ spin_unlock_bh(&txq->lock);
spin_unlock_bh(&sta->lock);
/* send an addBA request */
@@ -701,7 +703,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
err_unlock_queue:
kfree(sta->ampdu_mlme.tid_tx[tid]);
sta->ampdu_mlme.tid_tx[tid] = NULL;
- spin_unlock_bh(&local->mdev->tx_queue.lock);
+ spin_unlock_bh(&txq->lock);
ret = -EBUSY;
err_unlock_sta:
spin_unlock_bh(&sta->lock);
@@ -826,6 +828,7 @@ EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
{
struct ieee80211_local *local = hw_to_local(hw);
+ struct netdev_queue *txq;
struct sta_info *sta;
u8 *state;
int agg_queue;
@@ -875,10 +878,11 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
/* avoid ordering issues: we are the only one that can modify
* the content of the qdiscs */
- spin_lock_bh(&local->mdev->tx_queue.lock);
+ txq = &local->mdev->tx_queue;
+ spin_lock_bh(&txq->lock);
/* remove the queue for this aggregation */
ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
- spin_unlock_bh(&local->mdev->tx_queue.lock);
+ spin_unlock_bh(&txq->lock);
/* we just requeued the all the frames that were in the removed
* queue, and since we might miss a softirq we do netif_schedule.