commit e4e32459c2daea59516da59999706b357e6eb480
author Michal Kazior <michal.kazior@tieto.com> Fri Jun 29 12:47:08 2012 +0200
committer Johannes Berg <johannes.berg@intel.com> Fri Jun 29 13:39:19 2012 +0200
tree 110014ac72ebcf7aed16caa0fa83da75e319fa86
parent d4e50c5917e110451ced8f8de594cea858791f37

cfg80211: respect iface combinations when starting operation

devlist_mtx locking is changed to accomodate changes.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/wireless/nl80211.c

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5d29ed1..77102e6 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2478,6 +2478,14 @@
 					  params.channel_type))
 		return -EINVAL;
 
+	mutex_lock(&rdev->devlist_mtx);
+	err = cfg80211_can_use_chan(rdev, wdev, params.channel,
+				    CHAN_MODE_SHARED);
+	mutex_unlock(&rdev->devlist_mtx);
+
+	if (err)
+		return err;
+
 	err = rdev->ops->start_ap(&rdev->wiphy, dev, &params);
 	if (!err) {
 		wdev->preset_chan = params.channel;