[PATCH] janitor: fix copy*user in tc/zs

This patch catches insures proper return values from
copy_to/from_user calls.

From: Ron Gage <ron@rongage.org>

drivers/tc/zs.c

@@ -1108,7 +1108,7 @@ static int get_serial_info(struct dec_serial * info,
 	tmp.close_delay = info->close_delay;
 	tmp.closing_wait = info->closing_wait;
 	tmp.custom_divisor = info->custom_divisor;
-	return copy_to_user(retinfo,&tmp,sizeof(*retinfo));
+	return copy_to_user(retinfo,&tmp,sizeof(*retinfo)) ? -EFAULT : 0;
 }
 
 static int set_serial_info(struct dec_serial * info,