Re: [PATCH v1 01/31] tty: mxser: serial: 8250: replace mxser with 8250-based driver

[Andy Shevchenko]

On Sun, Nov 30, 2025 at 12:43 PM Crescent Hsieh
<crescentcy.hsieh@xxxxxxxx> wrote:
>
> Remove the legacy mxser driver and replace it with 8250-based
> implementation (8250_mxupci) for Moxa UPCI serial devices.
>
> This simplifies maintenance and improves integration with the existing
> 8250 serial infrastructure.

One obvious question (that I found no clear answer to in the commit
message): Does it mean all functionality is kept the same? (I think I
know the answer and this has to be summarised in the commit message.)
And one potential issue with the change: Please, instead of removing
the old option, use transition Kconfig to make sure users will get the
driver compiled when moving from old kernel configurations to a new
one. However, see above. it might be more tricky to achieve a smooth
transition at the end.


-- 
With Best Regards,
Andy Shevchenko