linux-kernel - Re: [PATCH v2 3/5] gpio: msc313: MStar MSC313 GPIO driver

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Message-ID: <CACRpkdYr+yhyROQzaYfFrGwG74DuZiA=fMVOesgOKrDajhTodQ@mail.gmail.com>
Date:   Tue, 10 Nov 2020 15:02:15 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Daniel Palmer <daniel@...f.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/5] gpio: msc313: MStar MSC313 GPIO driver

On Thu, Nov 5, 2020 at 4:43 PM Marc Zyngier <maz@...nel.org> wrote:
> On 2020-11-05 15:23, Daniel Palmer wrote:
> > On Thu, 5 Nov 2020 at 21:08, Marc Zyngier <maz@...nel.org> wrote:

> > >  I see that msc313_gpio_irqchip doesn't have a
> >> .irq_set_affinity callback. Is this system UP only?
> >
> > What is in mainline right now is UP only but there are chips with a
> > second cortex A7 that I have working in my tree.
> > So I will add that in for v3 if I can work out what I should actually
> > do there. :)
>
> Probably nothing more than setting the callback to
> irq_chip_set_affinity_parent,

Hm, is this something all GPIO irqchips used on SMP systems
should be doing? Or just hierarchical ones?

Yours,
Linus Walleij