Re: [PATCH] tty/serial: Prevent drop of DCD on suspend for TegraUARTs

[Alan Cox]

> NOTE: If we have people that are using UARTA on a Tegra and need to
> control DTR, we'll need to either add a separate port type for UARTA
> or we'll need to add some tegra-specific code to detect whether the
> DTR needs to be left high.

I have two problems with this change

- It adds more special cases into the 8250.c core code
- It breaks the UARTA port (which is a regression so not acceptable for
  upstream merging)

I think you should simply provide your platform with an appropriate
serial_in/serial_out method that does the needed masking. That way its
kept isolated from everyone else.

Alan
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