From 9dca9c490146e787472bc05b264e043311a4c67b Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 21 Jul 2010 10:09:25 +0200
Subject: [PATCH] mac80211: refuse shared key auth when WEP is unavailable

When WEP is not available, we should reject shared
key authentication because it could never succeed.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 net/mac80211/mlme.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 7a4e4bffbc71..cf8d72196c65 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2031,6 +2031,8 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
 		auth_alg = WLAN_AUTH_OPEN;
 		break;
 	case NL80211_AUTHTYPE_SHARED_KEY:
+		if (IS_ERR(sdata->local->wep_tx_tfm))
+			return -EOPNOTSUPP;
 		auth_alg = WLAN_AUTH_SHARED_KEY;
 		break;
 	case NL80211_AUTHTYPE_FT:
-- 
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