Re: [PATCH 1/2] serial: 8250: Let drivers request full 16550A feature probing

[Maciej W. Rozycki]

On Mon, 19 Sep 2022, Jiri Slaby wrote:

> > > Why __u64 and not u64?
> > 
> >   For consistency as there's `__u32' used elsewhere in this file.  It's not
> > clear to me what our rules WRT the use of `s*'/`u*' vs `__s*'/`__u*' are.
> > I don't think we have it mentioned under Documentation/.  Please clarify
> > if you know and I can update the change accordingly.
> 
> The rule is, AFAICT, use __u*/__s* in user (uapi) headers. Everywhere else,
> use u*/s*.

 Fair enough, that's consistent with ISO C's designation of identifiers 
whose names start with an underscore as reserved (for system use, etc.).

  Maciej