linux-kernel - Re: [PATCH] gpio: omap: use dynamic allocation of base

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Date:   Mon, 16 Jan 2023 19:14:02 +0200
From:   Tony Lindgren <tony@...mide.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Andreas Kemnade <andreas@...nade.info>, grygorii.strashko@...com,
        ssantosh@...nel.org, khilman@...nel.org, linus.walleij@...aro.org,
        linux-omap@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] gpio: omap: use dynamic allocation of base

* Bartosz Golaszewski <brgl@...ev.pl> [230116 08:38]:
> On Fri, Jan 13, 2023 at 9:59 PM Andreas Kemnade <andreas@...nade.info> wrote:
> > diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
> > index 80ddc43fd875..f5f3d4b22452 100644
> > --- a/drivers/gpio/gpio-omap.c
> > +++ b/drivers/gpio/gpio-omap.c
> > @@ -1020,7 +1020,7 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc,
> >                 if (!label)
> >                         return -ENOMEM;
> >                 bank->chip.label = label;
> > -               bank->chip.base = gpio;
> > +               bank->chip.base = -1;
> >         }
> >         bank->chip.ngpio = bank->width;
> >
> > --
> > 2.30.2
> >
> 
> This could potentially break some legacy user-space programs using
> sysfs but whatever, let's apply it and see if anyone complains.

Worth a try for sure, fingers crossed. I guess /sys/class/gpio will
break at least.

Regards,

Tony