Re: [PATCH 1/2] mfd: lpc_ich: expose the GPIO controller cell's software node

[Bartosz Golaszewski]

On Fri, Feb 13, 2026 at 10:16 AM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> On Fri, Feb 13, 2026 at 09:25:24AM +0100, Bartosz Golaszewski wrote:
> > One of the users of this driver - meraki-mx100 - abuses the software
> > node API by setting up a dummy software node without any logical link to
> > this GPIO controller and uses the fact that the GPIO core matches the
> > controller's label against the swnode's name to make the lookup work.
> >
> > We want to remove this behavior from GPIOLIB in favor of actual matching
> > of firmware nodes but that would break this user. To facilitate that:
> > create a software node for the GPIO controller cell and expose its
> > address in the provided MFD header.
>
> ...
>
> > +const struct software_node lpc_ich_gpio_swnode = {
> > +     .name = "gpio_ich",
> > +};
> > +EXPORT_SYMBOL(lpc_ich_gpio_swnode);
>
> Can we export in a dedicated namespace? Perhaps "LPC_ICH"?
>

I can't test it so I would prefer to reduce the amount of runtime risk
introduced by this change. We can do it separately later.

Bartosz