cfg80211: wext: only allow WEP keys to be configured before connected

When not connected, anything but WEP keys shouldn't be allowed to be
configured for later - only static WEP keys make sense at this point.
Change wext to reject anything else just like nl80211 does.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 9f27221..e45a764 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -487,6 +487,9 @@
 	err = 0;
 	if (wdev->current_bss)
 		err = rdev_add_key(rdev, dev, idx, pairwise, addr, params);
+	else if (params->cipher != WLAN_CIPHER_SUITE_WEP40 &&
+		 params->cipher != WLAN_CIPHER_SUITE_WEP104)
+		return -EINVAL;
 	if (err)
 		return err;