linux-kernel - [ 137/150] mac80211: always unblock CSA queue stop when disconnecting

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Message-Id: <20130226235538.583063292@linuxfoundation.org>
Date:	Tue, 26 Feb 2013 15:56:34 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	"stable@...r.kernel.org, jan.brummer@...os.org, Johannes Berg" 
	<johannes.berg@...el.com>,
	Jan-Michael Brummer <jan.brummer@...os.org>,
	Johannes Berg <johannes.berg@...el.com>
Subject: [ 137/150] mac80211: always unblock CSA queue stop when disconnecting

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

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


From: Johannes Berg <johannes.berg@...el.com>

Commit 5b36ebd8249f403c7edf7cf68d68e9a0d0f55243 upstream.

In some cases when disconnecting after (or during?) CSA
the queues might not recover, and then the only way to
recover is reloading the module.

Fix this by always unblocking the queue CSA reason when

disconnecting.

Reported-by: Jan-Michael Brummer <jan.brummer@...os.org>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/mac80211/mlme.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1812,6 +1812,8 @@ static void __ieee80211_disconnect(struc
 			       WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
 			       transmit_frame, frame_buf);
 	ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
+	ieee80211_wake_queues_by_reason(&sdata->local->hw,
+					IEEE80211_QUEUE_STOP_REASON_CSA);
 	mutex_unlock(&ifmgd->mtx);
 
 	/*
@@ -1856,8 +1858,6 @@ static void ieee80211_csa_connection_dro
 		container_of(work, struct ieee80211_sub_if_data,
 			     u.mgd.csa_connection_drop_work);
 
-	ieee80211_wake_queues_by_reason(&sdata->local->hw,
-					IEEE80211_QUEUE_STOP_REASON_CSA);
 	__ieee80211_disconnect(sdata, true);
 }
 


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