From f724828bd3db7e0fe6f17ed8de2656bfbfed5c4e Mon Sep 17 00:00:00 2001
From: Arik Nemtsov <arik@wizery.com>
Date: Sat, 19 Nov 2011 10:51:26 +0200
Subject: [PATCH] mac80211: dereference RCU protected probe_resp pointer
 correctly

This fixes a sparse warning:

cfg.c:502:13: warning: incorrect type in assignment (different address spaces)
cfg.c:502:13:    expected struct sk_buff *old
cfg.c:502:13:    got struct sk_buff [noderef] <asn:4>*probe_resp

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
 net/mac80211/cfg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index f947ac6bb67c..a29f06c0bcf0 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -509,7 +509,7 @@ static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 	if (!resp || !resp_len)
 		return -EINVAL;
 
-	old = sdata->u.ap.probe_resp;
+	old = rtnl_dereference(sdata->u.ap.probe_resp);
 
 	new = dev_alloc_skb(resp_len);
 	if (!new)
-- 
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