On 05/03/2012 01:38 PM, Johannes Berg wrote:
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 5b7053c..40d3ff4 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -421,16 +421,22 @@ static void sta_tx_agg_session_timer_expired(unsigned long data)
struct tid_ampdu_tx *tid_tx;
unsigned long timeout;
- tid_tx = rcu_dereference_protected_tid_tx(sta, *ptid);
- if (!tid_tx)
+ rcu_read_lock();
+ tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[*ptid]);
+ if (!tid_tx) {
+ rcu_read_unlock();
return;
+ }
timeout = tid_tx->last_tx + TU_TO_JIFFIES(tid_tx->timeout);
if (time_is_after_jiffies(timeout)) {
mod_timer(&tid_tx->session_timer, timeout);
+ rcu_read_unlock();
return;
}
+ rcu_read_unlock();
+
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "tx session timer expired on tid %d\n", (u16)*ptid);
#endif
This patch is the same as was proposed by Mohammed on May 1. I must have messed
up the testing as I thought it failed; however, it is now working.
Mohammed - I plan on submitting this to John with a "From:" from you along with
your s-o-b. Is that OK. It will be submitted for inclusion in 3.5.
Larry
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