Re: [PATCH v2 1/2] mfd: ucb1x00: Register software node for GPIO controller

On Tue, 07 Jul 2026, Arnd Bergmann wrote:

> On Tue, Jul 7, 2026, at 07:01, Dmitry Torokhov wrote:
> > Define a static software node for the UCB1x00 GPIO controller and attach
> > it to the core MFD device in ucb1x00_probe(). This node will also be
> > used by the created GPIO chip.
> >
> > This allows machine subdrivers (such as Assabet evaluation board
> > support) to reference the UCB1x00 GPIO controller in property entries
> > when converting legacy platform data to software nodes, resolving pin
> > bindings directly via the attached firmware node without relying on
> > name matching.
> >
> > Assisted-by: Antigravity:gemini-3.5-flash
> > Signed-off-by: Dmitry Torokhov <[email protected]>
> 
> Acked-by: Arnd Bergmann <[email protected]>
> 
> Assabet should be going away soon, so it really doesn't
> matter much.
> 
> > +const struct software_node ucb1x00_gpiochip_node = {
> > +	.name = "ucb1x00-gpio",
> > +};
> > +EXPORT_SYMBOL_GPL(ucb1x00_gpiochip_node);
> 
> It does feel a bit counterproductive if you have to add more
> exported symbols.
> 
> > index ede237384723..214c71a12e84 100644
> > --- a/include/linux/mfd/ucb1x00.h
> > +++ b/include/linux/mfd/ucb1x00.h
> > @@ -103,6 +103,9 @@
> >  #define UCB_MODE_DYN_VFLAG_ENA	(1 << 12)
> >  #define UCB_MODE_AUD_OFF_CAN	(1 << 13)
> > 
> > +struct software_node;
> > +extern const struct software_node ucb1x00_gpiochip_node;
> 
> No need for the seperate declaration of the struct tag,
> you only need this if the first user is in the argument
> list of a function, but not for a global variable.

Are you planning on fixing these review comments, Dmitry?

-- 
Lee Jones