linux-kernel - Re: [PATCH 11/12] pinctrl: starfive: Move PM device over to irq domain

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Message-ID: <CANBLGcy_zEY7qkMe96v+tpsxbp9CDJh14utug5wseCfBhOSvdA@mail.gmail.com>
Date:   Tue, 1 Feb 2022 16:30:02 +0100
From:   Emil Renner Berthing <kernel@...il.dk>
To:     Marc Zyngier <maz@...nel.org>
Cc:     "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-mediatek@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-omap@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Santosh Shilimkar <ssantosh@...nel.org>,
        Kevin Hilman <khilman@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Avi Fishman <avifishman70@...il.com>,
        Tomer Maimon <tmaimon77@...il.com>,
        Tali Perry <tali.perry1@...il.com>
Subject: Re: [PATCH 11/12] pinctrl: starfive: Move PM device over to irq domain

On Tue, 1 Feb 2022 at 16:16, Emil Renner Berthing <kernel@...il.dk> wrote:
> On Tue, 1 Feb 2022 at 13:19, Marc Zyngier <maz@...nel.org> wrote:
> >
> > Move the reference to the device over to the irq domain.
> >
> > Signed-off-by: Marc Zyngier <maz@...nel.org>
> > ---
> >  drivers/pinctrl/pinctrl-starfive.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/pinctrl/pinctrl-starfive.c b/drivers/pinctrl/pinctrl-starfive.c
> > index 0b912152a405..5be9866c2b3c 100644
> > --- a/drivers/pinctrl/pinctrl-starfive.c
> > +++ b/drivers/pinctrl/pinctrl-starfive.c
> > @@ -1307,7 +1307,6 @@ static int starfive_probe(struct platform_device *pdev)
> >         sfp->gc.base = -1;
> >         sfp->gc.ngpio = NR_GPIOS;
> >
> > -       starfive_irq_chip.parent_device = dev;
> >         starfive_irq_chip.name = sfp->gc.label;
> >
> >         sfp->gc.irq.chip = &starfive_irq_chip;
> > @@ -1330,6 +1329,8 @@ static int starfive_probe(struct platform_device *pdev)
> >         if (ret)
> >                 return dev_err_probe(dev, ret, "could not register gpiochip\n");
> >
> > +       irq_domain_set_pm_device(sfp->gc.irq.domain, dev);
> > +
>
> The gpio framework uses the irq_domain at sfp->gc.irq.domain, so
> shouldn't this be set before registering the gpio_chip with
> devm_gpiochip_add_data above?

Ah, no. sfp->gc.irq.domain is a pointer to an irq_domain that is
initialised when adding the gpio_chip.

Reviewed-by: Emil Renner Berthing <kernel@...il.dk>