cfg80211: fix unregistration

The work that we cancel there requires the cfg80211_mutex,
so we can't cancel it under the mutex, which is fine, we
can just move it to after the locked section.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/wireless/core.c b/net/wireless/core.c
index 97cc596..6891cd0 100644 (file)
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -548,11 +548,6 @@ void wiphy_unregister(struct wiphy *wiphy)
        /* unlock again before freeing */
        mutex_unlock(&rdev->mtx);
 
-       cancel_work_sync(&rdev->conn_work);
-       cancel_work_sync(&rdev->scan_done_wk);
-       kfree(rdev->scan_req);
-       flush_work(&rdev->event_work);
-
        cfg80211_debugfs_rdev_del(rdev);
 
        /* If this device got a regulatory hint tell core its
@@ -564,6 +559,11 @@ void wiphy_unregister(struct wiphy *wiphy)
        debugfs_remove(rdev->wiphy.debugfsdir);
 
        mutex_unlock(&cfg80211_mutex);
+
+       cancel_work_sync(&rdev->conn_work);
+       cancel_work_sync(&rdev->scan_done_wk);
+       kfree(rdev->scan_req);
+       flush_work(&rdev->event_work);
 }
 EXPORT_SYMBOL(wiphy_unregister);