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 7bbb98e..7043ddc 100644 (file)
--- 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);