mac80211_hwsim: fix unregistration

If you rmmod the module while associated, frames might
be transmitted during unregistration -- which will crash
if the hwsim%d interface is unregistered first, so only
do that after all the virtual wiphys are gone.

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

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index a111bda..5bed824 100644 (file)
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -1167,8 +1167,8 @@ static void __exit exit_mac80211_hwsim(void)
 {
        printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n");
 
-       unregister_netdev(hwsim_mon);
        mac80211_hwsim_free();
+       unregister_netdev(hwsim_mon);
 }