linux-kernel - [PATCH 3.19 091/177] mac80211: notify channel switch at the end of ieee80211_chswitch_post

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Message-Id: <20150316140817.237002616@linuxfoundation.org>
Date:	Mon, 16 Mar 2015 15:08:18 +0100
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Luciano Coelho <luciano.coelho@...el.com>,
	Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
	Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH 3.19 091/177] mac80211: notify channel switch at the end of ieee80211_chswitch_post_beacon()

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

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

From: Luciano Coelho <luciano.coelho@...el.com>

commit 688b1ecfb9ed0484754d2653386e3c44c58ede5c upstream.

The call to cfg80211_ch_switch_notify() should be at the end of the
ieee80211_chswitch_post_beacon() function, because it should only be
sent if everything succeeded.

Fixes: d04b5ac9e70b ("cfg80211/mac80211: allow any interface to send channel switch notifications")
Signed-off-by: Luciano Coelho <luciano.coelho@...el.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@...el.com>
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
@@ -1054,8 +1054,6 @@ static void ieee80211_chswitch_post_beac
 		sdata->csa_block_tx = false;
 	}
 
-	cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
-
 	sdata->vif.csa_active = false;
 	ifmgd->csa_waiting_bcn = false;
 
@@ -1067,6 +1065,8 @@ static void ieee80211_chswitch_post_beac
 				     &ifmgd->csa_connection_drop_work);
 		return;
 	}
+
+	cfg80211_ch_switch_notify(sdata->dev, &sdata->reserved_chandef);
 }
 
 void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)


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