linux-kernel - [024/145] mac80211: quit addba_resp_timer if Tx BA session is torn down

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Date:	Fri, 12 Mar 2010 16:25:57 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Zhu Yi <yi.zhu@...el.com>,
	Johannes Berg <johannes@...solutions.net>,
	"John W. Linville" <linville@...driver.com>
Subject: [024/145] mac80211: quit addba_resp_timer if Tx BA session is torn down

2.6.32-stable review patch.  If anyone has any objections, please let me know.

----------------
From: Zhu Yi <yi.zhu@...el.com>

commit 3dc1de0bf23816ed557ac8addf680cd5ee57e805 upstream.

Make addba_resp_timer aware the HT_AGG_STATE_REQ_STOP_BA_MSK mask
so that when ___ieee80211_stop_tx_ba_session() is issued the timer
will quit. Otherwise when suspend happens before the timer expired,
the timer handler will be called immediately after resume and
messes up driver status.

Signed-off-by: Zhu Yi <yi.zhu@...el.com>
Acked-by: Johannes Berg <johannes@...solutions.net>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 net/mac80211/agg-tx.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -177,7 +177,8 @@ static void sta_addba_resp_timer_expired
 
 	/* check if the TID waits for addBA response */
 	spin_lock_bh(&sta->lock);
-	if ((*state & (HT_ADDBA_REQUESTED_MSK | HT_ADDBA_RECEIVED_MSK)) !=
+	if ((*state & (HT_ADDBA_REQUESTED_MSK | HT_ADDBA_RECEIVED_MSK |
+		       HT_AGG_STATE_REQ_STOP_BA_MSK)) !=
 						HT_ADDBA_REQUESTED_MSK) {
 		spin_unlock_bh(&sta->lock);
 		*state = HT_AGG_STATE_IDLE;


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