[043/289] cfg80211: fix locking

Greg KH
2010-12-08T01:54:47Z

From: Johannes Berg <johannes.berg@intel.com>

commit 2234362c427e2ef667595b9b81c0125003ac5607 upstream.

Add missing unlocking of the wiphy in set_channel,
and don't try to unlock a non-existing wiphy in
set_cqm.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
net/wireless/nl80211.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -761,11 +761,13 @@ static int nl80211_set_channel(struct sk

result = get_rdev_dev_by_info_ifindex(info, &rdev, &netdev);
if (result)
- goto unlock;
+ goto unlock_rtnl;

result = __nl80211_set_channel(rdev, netdev->ieee80211_ptr, info);

- unlock:
+ dev_put(netdev);
+ cfg80211_unlock_rdev(rdev);
+ unlock_rtnl:
rtnl_unlock();

return result;
@@ -4996,7 +4998,7 @@ static int nl80211_set_cqm_rssi(struct g

err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
if (err)
- goto unlock_rdev;
+ goto unlock_rtnl;

wdev = dev->ieee80211_ptr;

@@ -5013,9 +5015,10 @@ static int nl80211_set_cqm_rssi(struct g
err = rdev->ops->set_cqm_rssi_config(wdev->wiphy, dev,
threshold, hysteresis);

-unlock_rdev:
+ unlock_rdev:
cfg80211_unlock_rdev(rdev);
dev_put(dev);
+ unlock_rtnl:
rtnl_unlock();

return err;