于 2013年10月03日 15:32, Hector Palacios 写道: > This lead to many bytes not being transferred (specially at low > baudrates), as they were still in the DMA buffer when the AUART was > shutdown. I meet a similar bug with the imx.c which is used for the I.MX. I did not implement the uart_ops->flush_buffer() hook, so the DMA may fails. So could we add a new flush_buffer hook for mxs-auart? Please see the Documentation/serail/driver. thanks Huang Shijie -- 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