mac80211: allow mode change if IBSS is not allowed

Changing mode on an interface is not allowed if IBSS is disabled for the
current channel.  That restriction should only apply when switching to
the ad-hoc mode, as it was prior to "cfg80211: handle SIOCGIWMODE/SIOCSIWMODE".

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 5abbc3f07dd6eb4c035b697698c878450e444c1e..b9074824862aee74c9e6555f3d43a0cba51cd4f8 100644 (file)
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -699,7 +699,8 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
                return 0;
 
        /* Setting ad-hoc mode on non-IBSS channel is not supported. */
-       if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)
+       if (sdata->local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS &&
+           type == NL80211_IFTYPE_ADHOC)
                return -EOPNOTSUPP;
 
        /*