Re: [PATCH v8 3/7] mux: add help text for MULTIPLEXER config option

[Geert Uytterhoeven]

Hi Josua,

On Sun, 8 Feb 2026 at 16:16, Josua Mayer <josua@xxxxxxxxxxxxx> wrote:
> On 03/02/2026 15:01, Josua Mayer wrote:
> > Add prompt and help text for CONFIG_MULTIPLEXER to allow enabling this
> > option thorugh the kernel configuration without explicit "select" driver
> > dependencies.
> >
> > Select it by default when COMPILE_TEST is set for better coverage.
> >
> > Signed-off-by: Josua Mayer <josua@xxxxxxxxxxxxx>
> > ---
> >   drivers/mux/Kconfig | 8 +++++++-
> >   1 file changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/mux/Kconfig b/drivers/mux/Kconfig
> > index c68132e38138..e31c46820bdf 100644
> > --- a/drivers/mux/Kconfig
> > +++ b/drivers/mux/Kconfig
> > @@ -4,7 +4,13 @@
> >   #
> >
> >   config MULTIPLEXER
> > -     tristate
> > +     tristate "Generic Multiplexer Support" if COMPILE_TEST
>
> This didn't do what I thought it would.
> It was my intention to allow enabling this through menuconfig / .config.
>
> With the syntax above menuconfig shows:
>
> │ Symbol: MULTIPLEXER [=n]
> │ Type  : tristate
> │ Defined at drivers/mux/Kconfig:6
> │   Prompt: Generic Multiplexer Support
> │   Visible if: COMPILE_TEST [=n]
>
> This means it cannot be selected.

Looks like you haven't enabled COMPILE_TEST first?

> Instead I (think I) should use
> default m if COMPILE_TEST

No, merely enabling COMPILE_TEST must not enable additional
functionality.

> Since my patch-set broke x86_64 allmodconfig and failed merge into
> linux-next,
> this presents an opportunity to change the above as well with v9.

Ulf has already applied this series to mmc/next.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds