linux-kernel - [PATCH 3.11 22/94] cfg80211: fix warning when using WEXT for IBSS

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Message-Id: <20131109065205.803433886@linuxfoundation.org>
Date:	Fri,  8 Nov 2013 22:51:28 -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, Bruno Randolf <br1@...fach.org>,
	Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH 3.11 22/94] cfg80211: fix warning when using WEXT for IBSS

3.11-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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/wireless/ibss.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -263,6 +263,8 @@ int cfg80211_ibss_wext_join(struct cfg80
 				if (chan->flags & IEEE80211_CHAN_DISABLED)
 					continue;
 				wdev->wext.ibss.chandef.chan = chan;
+				wdev->wext.ibss.chandef.center_freq1 =
+					chan->center_freq;
 				break;
 			}
 
@@ -347,6 +349,7 @@ int cfg80211_ibss_wext_siwfreq(struct ne
 	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 */


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