cfg80211: set_default_key only for WEP

We invoke the cfg80211 set_default_key callback only for WEP key
configuring.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/wireless/wext-compat.c

@@ -531,7 +531,8 @@ static int __cfg80211_set_encryption(struct cfg80211_registered_device *rdev,
 			wdev->wext.keys->data[idx];
 	}
 
-	if (params->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&
+	if ((params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
+	     params->cipher == WLAN_CIPHER_SUITE_WEP104) &&
 	    (tx_key || (!addr && wdev->wext.default_key == -1))) {
 		if (wdev->current_bss)
 			err = rdev->ops->set_default_key(&rdev->wiphy,