From: Ivan Kuten <ivan.kuten@promwad.com>
Date: Mon, 24 Nov 2008 20:17:54 +0000 (-0500)
Subject: mac80211: fix unaligned access in ieee80211_wep_encrypt_data
X-Git-Tag: v2.6.29-rc1~581^2~383^2~1
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=860c6e6a15c5082e1a1ff1faeb56cdf439380e87;p=karo-tx-linux.git

mac80211: fix unaligned access in ieee80211_wep_encrypt_data

Signed-off-by: Ivan Kuten <ivan.kuten@promwad.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/net/mac80211/wep.c b/net/mac80211/wep.c
index 7bbb98e846a3..7043ddc75498 100644
--- a/net/mac80211/wep.c
+++ b/net/mac80211/wep.c
@@ -17,6 +17,7 @@
 #include <linux/err.h>
 #include <linux/mm.h>
 #include <linux/scatterlist.h>
+#include <asm/unaligned.h>
 
 #include <net/mac80211.h>
 #include "ieee80211_i.h"
@@ -125,10 +126,10 @@ void ieee80211_wep_encrypt_data(struct crypto_blkcipher *tfm, u8 *rc4key,
 {
 	struct blkcipher_desc desc = { .tfm = tfm };
 	struct scatterlist sg;
-	__le32 *icv;
+	__le32 icv;
 
-	icv = (__le32 *)(data + data_len);
-	*icv = cpu_to_le32(~crc32_le(~0, data, data_len));
+	icv = cpu_to_le32(~crc32_le(~0, data, data_len));
+	put_unaligned(icv, (__le32 *)(data + data_len));
 
 	crypto_blkcipher_setkey(tfm, rc4key, klen);
 	sg_init_one(&sg, data, data_len + WEP_ICV_LEN);