Re: [PATCH v1 02/14] serial: core: Add UPIO_UNSET constant for unset port type

[Jiri Slaby]

On 22. 02. 24, 14:21, Andy Shevchenko wrote:
> On Thu, Feb 22, 2024 at 07:58:32AM +0100, Jiri Slaby wrote:
> > On 21. 02. 24, 19:31, Andy Shevchenko wrote:
>
> ...
>
> > >    	unsigned char		iotype;			/* io access style */
> > > +#define UPIO_UNSET		((unsigned char)~0U)	/* UCHAR_MAX */
> >
> > Perhaps making the var u8 and this U8_MAX then? It would make more sense to
> > me.
>
> WFM, should it be a separate change?

Likely.

> Btw, how can I justify it?

Hmm, thinking about it, why is it not an enum?

But it could be also an u8 because you want it be exactly 8 bits as you 
want to be sure values up to 255 fit.

thanks,
--
js
suse labs