mac80211: Allow to set channel in adhoc properly

The last patch fixes a bug that it was not possible to set the channel
manually in the ad hoc mode properly.

Please commit this patches so that we don't need the proprietary
Broadcom driver in the near future anymore.

Signed-off-by: Alina Friedrichsen <x-alina@gmx.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index 654041b..bb2c713 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -230,13 +230,15 @@
 {
 	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
-	if (sdata->vif.type == NL80211_IFTYPE_STATION)
+	if (sdata->vif.type == NL80211_IFTYPE_ADHOC ||
+	    sdata->vif.type == NL80211_IFTYPE_STATION)
 		sdata->u.sta.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
 
 	/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
 	if (freq->e == 0) {
 		if (freq->m < 0) {
-			if (sdata->vif.type == NL80211_IFTYPE_STATION)
+			if (sdata->vif.type == NL80211_IFTYPE_ADHOC ||
+			    sdata->vif.type == NL80211_IFTYPE_STATION)
 				sdata->u.sta.flags |=
 					IEEE80211_STA_AUTO_CHANNEL_SEL;
 			return 0;