linux-kernel - [25/55] mac80211: Restart STA timers only on associated state

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Message-Id: <20110806000251.375238475@clark.kroah.org>
Date:	Fri, 05 Aug 2011 17:01:55 -0700
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,
	Rajkumar Manoharan <rmanohar@....qualcomm.com>,
	"John W. Linville" <linville@...driver.com>
Subject: [25/55] mac80211: Restart STA timers only on associated state

2.6.32-longterm review patch.  If anyone has any objections, please let us know.

------------------

From: Rajkumar Manoharan <rmanohar@....qualcomm.com>

commit 676b58c27475a9defccc025fea1cbd2b141ee539 upstream.

A panic was observed when the device is failed to resume properly,
and there are no running interfaces. ieee80211_reconfig tries
to restart STA timers on unassociated state.

Signed-off-by: Rajkumar Manoharan <rmanohar@....qualcomm.com>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 net/mac80211/mlme.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2308,6 +2308,9 @@ void ieee80211_sta_restart(struct ieee80
 {
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
+	if (!ifmgd->associated)
+		return;
+
 	if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running))
 		add_timer(&ifmgd->timer);
 	if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running))


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