[U-Boot] [PATCH v4] serial: uartlite: Support for SERIAL_MULTI

Mike Frysinger
2011-09-21T14:15:14Z

On Wednesday, September 21, 2011 08:21:35 Michal Simek wrote:
> Marek Vasut wrote:
> > On Tuesday, September 20, 2011 09:19:23 AM Michal Simek wrote:
> >> Michal Simek wrote:
> >>> Add support for SERIAL MULTI for uartlite.
> >>
> >> Any comment?
> >
> > Avoid endless loops
>
> No problem to do it for putc but for getc?
> What would you like to return if there is no character available?

getc() is allowed to loop forever. pretty much most drivers also wait forever
with putc(). i dont think serial drivers really matter as if the hardware
breaks, u-boot itself isn't terribly useful anymore. just make sure flow
control doesn't bite you (CTS/RTS).
-mike
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