linux-kernel - Re: [RFC PATCH] auxdisplay: line-display: support attribute attachment to existing device

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Message-ID: <CAHp75VcHftKVQT4_X7Fc=NERzE0=U_UPvc00=P6UnBCvY6mh0w@mail.gmail.com>
Date: Sat, 30 Aug 2025 22:51:27 +0300
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Jean-François Lessard <jefflessard3@...il.com>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>, Andy Shevchenko <andy@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] auxdisplay: line-display: support attribute
 attachment to existing device

On Sat, Aug 30, 2025 at 7:57 PM Jean-François Lessard
<jefflessard3@...il.com> wrote:
> Le 30 août 2025 12 h 18 min 27 s HAE, Andy Shevchenko <andy.shevchenko@...il.com> a écrit :
> >On Sat, Aug 30, 2025 at 6:21 PM Jean-François Lessard
> ><jefflessard3@...il.com> wrote:
> >> Le 30 août 2025 10 h 39 min 20 s HAE, Andy Shevchenko <andy.shevchenko@...il.com> a écrit :
> >> >On Sat, Aug 30, 2025 at 4:55 PM Jean-François Lessard
> >> ><jefflessard3@...il.com> wrote:
> >> >> Le 30 août 2025 05 h 15 min 23 s HAE, Andy Shevchenko <andy.shevchenko@...il.com> a écrit :
> >> >> >On Fri, Aug 29, 2025 at 4:03 AM Jean-François Lessard
> >> >> ><jefflessard3@...il.com> wrote:

...

> >This can be made in a series, so the order will suggest the
> >dependencies immediately.
>
> Agreed. Series would then be:
> 1. attachment list + to_linedisp()

Let's see how it will go, but I suspect that to_linedisp() still can
be separated.

> 2. attach to existing device capability
> 3. num_digits attribute + ABI docs
>
> I guess this should be an independent patch series than the tm16xx patch series.
> Isn't it an issue to submit code without a real user? I mean, tm16xx would be
> the first attach/detach consumer.

Make a cross-reference to each other in the respective cover letters.
(IIRC, it's possible as `git format-patch` gives a message ID, but I
might be mistaken, and in such a case just make one reference without
a URL to lore archive)

-- 
With Best Regards,
Andy Shevchenko