Staging: vt6655: memory corruption in check in wpa_set_wpadev()

The original code left it up to the user to decide how much data to
copy, but that doesn't work with a fixed size array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/vt6655/wpactl.c

@@ -213,7 +213,9 @@ int wpa_set_wpadev(PSDevice pDevice, int val)
 	int uu, ii;
 
 
-	if (param->u.wpa_key.alg_name > WPA_ALG_CCMP)
+	if (param->u.wpa_key.alg_name > WPA_ALG_CCMP ||
+			param->u.wpa_key.key_len >= MAX_KEY_LEN ||
+			param->u.wpa_key.seq_len >= MAX_KEY_LEN)
 		return -EINVAL;
 
     DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "param->u.wpa_key.alg_name = %d \n", param->u.wpa_key.alg_name);