mac80211: fix wireless extension support

SVN-Revision: 35759

package/mac80211/patches/030-wext.patch

+--- a/net/wireless/core.c
++++ b/net/wireless/core.c
+@@ -884,6 +884,15 @@ static int cfg80211_netdev_notifier_call
+ 		wdev->sme_state = CFG80211_SME_IDLE;
+ 		mutex_unlock(&rdev->devlist_mtx);
+ #ifdef CONFIG_CFG80211_WEXT
++#ifdef CONFIG_WIRELESS_EXT
++		if (!dev->wireless_handlers)
++			dev->wireless_handlers = &cfg80211_wext_handler;
++#else
++		printk_once(KERN_WARNING "cfg80211: wext will not work because "
++			    "kernel was compiled with CONFIG_WIRELESS_EXT=n. "
++			    "Tools using wext interface, like iwconfig will "
++			    "not work.\n");
++#endif
+ 		wdev->wext.default_key = -1;
+ 		wdev->wext.default_mgmt_key = -1;
+ 		wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;