On Sun, 20 Jan 2013 20:57:16 +0800 Yi Qingliang <niqingliang2003@xxxxxxxxx> wrote: > o you mean there is no problem for early version kernel? yes, but for really old versions such as 3.2 and earlier. Denis. -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html