ar9170: fix read & write outside array bounds
authorDan Carpenter <error27@gmail.com>
Sun, 9 Aug 2009 12:24:09 +0000 (14:24 +0200)
committerJohn W. Linville <linville@tuxdriver.com>
Mon, 10 Aug 2009 20:41:01 +0000 (16:41 -0400)
queue == __AR9170_NUM_TXQ would cause a bug on the next line.

found by Smatch ( http://repo.or.cz/w/smatch.git ).

Cc: stable@kernel.org
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
drivers/net/wireless/ath/ar9170/main.c

index 9d38cf60a0db2bd8ee1197d99ea6854769aa7357..88c3d8573869dbfab02b3738a26fed16d38d80ee 100644 (file)
@@ -1967,13 +1967,14 @@ static int ar9170_conf_tx(struct ieee80211_hw *hw, u16 queue,
        int ret;
 
        mutex_lock(&ar->mutex);
-       if ((param) && !(queue > __AR9170_NUM_TXQ)) {
+       if (queue < __AR9170_NUM_TXQ) {
                memcpy(&ar->edcf[ar9170_qos_hwmap[queue]],
                       param, sizeof(*param));
 
                ret = ar9170_set_qos(ar);
-       } else
+       } else {
                ret = -EINVAL;
+       }
 
        mutex_unlock(&ar->mutex);
        return ret;