linux-kernel - [PATCH 3.8 41/91] cfg80211: fix warning when using WEXT for IBSS

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Message-Id: <1383876946-2396-42-git-send-email-kamal@canonical.com>
Date:	Thu,  7 Nov 2013 18:14:56 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Bruno Randolf <br1@...fach.org>,
	Johannes Berg <johannes.berg@...el.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.8 41/91] cfg80211: fix warning when using WEXT for IBSS

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

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

From: Bruno Randolf <br1@...fach.org>

commit f478f33a93f9353dcd1fe55445343d76b1c3f84a upstream.

Fix kernel warning when using WEXT for configuring ad-hoc mode,
e.g.  "iwconfig wlan0 essid test channel 1"

WARNING: at net/wireless/chan.c:373 cfg80211_chandef_usable+0x50/0x21c [cfg80211]()

The warning is caused by an uninitialized variable center_freq1.

Signed-off-by: Bruno Randolf <br1@...fach.org>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 net/wireless/ibss.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index 9b9551e..ceef854 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -269,6 +269,8 @@ int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
 				if (chan->flags & IEEE80211_CHAN_DISABLED)
 					continue;
 				wdev->wext.ibss.chandef.chan = chan;
+				wdev->wext.ibss.chandef.center_freq1 =
+					chan->center_freq;
 				break;
 			}
 
@@ -353,6 +355,7 @@ int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
 	if (chan) {
 		wdev->wext.ibss.chandef.chan = chan;
 		wdev->wext.ibss.chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
+		wdev->wext.ibss.chandef.center_freq1 = freq;
 		wdev->wext.ibss.channel_fixed = true;
 	} else {
 		/* cfg80211_ibss_wext_join will pick one if needed */
-- 
1.8.1.2

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