于 2013年07月15日 16:27, Uwe Kleine-König 写道:
do you want to say that the driver fails to only enable DMA when RTS/CTS
are available; or that today the driver can handle DMA just fine even
without RTS/CTS? I interpret your commit log as the latter, your patch
implements the former however.
in the mxs-auart, if the RTS/CTS is not invalid, the DMA should be not
enabled.
But current code lost the limit, a uart without the RTS/CTS may also
enables the DMA in which case the uart
may does not run or run in a abnormal way.
thanks
Huang Shijie
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