cfg80211: fix ibss wext chandef creation

The wext internal chandefs for ibss should be created using the
cfg80211_chandef_create() functions. Initializing fields manually is
error-prone.

Reported-by: Dirk Gouders <dirk@gouders.net>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index 9d797df56649c5a47fdf1f61e665ee31e4b77e7c..89737ee2669a8de9bc8f02aa1c392052369d210b 100644 (file)
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -262,7 +262,7 @@ int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
 
        /* try to find an IBSS channel if none requested ... */
        if (!wdev->wext.ibss.chandef.chan) {
-               wdev->wext.ibss.chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
+               struct ieee80211_channel *new_chan = NULL;
 
                for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
                        struct ieee80211_supported_band *sband;
@@ -278,18 +278,19 @@ int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
                                        continue;
                                if (chan->flags & IEEE80211_CHAN_DISABLED)
                                        continue;
-                               wdev->wext.ibss.chandef.chan = chan;
-                               wdev->wext.ibss.chandef.center_freq1 =
-                                       chan->center_freq;
+                               new_chan = chan;
                                break;
                        }
 
-                       if (wdev->wext.ibss.chandef.chan)
+                       if (new_chan)
                                break;
                }
 
-               if (!wdev->wext.ibss.chandef.chan)
+               if (!new_chan)
                        return -EINVAL;
+
+               cfg80211_chandef_create(&wdev->wext.ibss.chandef, new_chan,
+                                       NL80211_CHAN_NO_HT);
        }
 
        /* don't join -- SSID is not there */
@@ -363,9 +364,8 @@ int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
                return err;
 
        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;
+               cfg80211_chandef_create(&wdev->wext.ibss.chandef, chan,
+                                       NL80211_CHAN_NO_HT);
                wdev->wext.ibss.channel_fixed = true;
        } else {
                /* cfg80211_ibss_wext_join will pick one if needed */