cfg80211: fix locking for SIWFREQ

"cfg80211: validate channel settings across interfaces"
contained a locking bug -- in the managed-mode SIWFREQ
call it would end up running into a lock recursion.

This fixes it by not checking that particular interface
for a channel that it needs to stay on, which is as it
should be as that's the interface we're setting the
channel for.

Reported-by: Reinette Chatre <reinette.chatre@intel.com>
Reported-by: Kalle Valo <kalle.valo@iki.fi>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Tested-by: Kalle Valo <kalle.valo@iki.fi>
Tested-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 17648dc79867..c44917492210 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -766,7 +766,7 @@ int cfg80211_wext_siwfreq(struct net_device *dev,
                 if (freq == 0)
                         return -EINVAL;
                 mutex_lock(&rdev->devlist_mtx);
-                err = rdev_set_freq(rdev, freq, NL80211_CHAN_NO_HT);
+                err = rdev_set_freq(rdev, NULL, freq, NL80211_CHAN_NO_HT);
                 mutex_unlock(&rdev->devlist_mtx);
                 return err;
         }