linux-kernel - Re: [PATCH v2 3/9] gpio: ep93xx: Fix wrong irq numbers in port F

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Message-ID: <11b5b8dad17be4b9edb7e06e10a161f86098edcc.camel@gmail.com>
Date:   Thu, 28 Jan 2021 11:15:47 +0100
From:   Alexander Sverdlin <alexander.sverdlin@...il.com>
To:     Nikita Shubin <nikita.shubin@...uefel.me>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/9] gpio: ep93xx: Fix wrong irq numbers in port F

Hi!

On Wed, 2021-01-27 at 13:46 +0300, Nikita Shubin wrote:
> Port F irq's should be statically mapped to EP93XX_GPIO_F_IRQ_BASE.
> 
> So we need to specify girq->first otherwise:
> 
> "If device tree is used, then first_irq will be 0 and
> irqs get mapped dynamically on the fly"
> 
> And that's not the thing we want.
> 
> Signed-off-by: Nikita Shubin <nikita.shubin@...uefel.me>

I have no code out-of-the-box to test the GPIO interrupts on EP93xx,
so I just did a bootup with this patch. But the change looks fine to
me:

Acked-by: Alexander Sverdlin <alexander.sverdlin@...il.com>

> ---
>  drivers/gpio/gpio-ep93xx.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
> index 2eea02c906e0..9c3d049e5af7 100644
> --- a/drivers/gpio/gpio-ep93xx.c
> +++ b/drivers/gpio/gpio-ep93xx.c
> @@ -430,6 +430,7 @@ static int ep93xx_gpio_add_bank(struct gpio_chip
> *gc,
>                 girq->default_type = IRQ_TYPE_NONE;
>                 girq->handler = handle_level_irq;
>                 gc->to_irq = ep93xx_gpio_f_to_irq;
> +               girq->first = EP93XX_GPIO_F_IRQ_BASE;
>         }
>  
>         return devm_gpiochip_add_data(dev, gc, epg);

-- 
Alexander Sverdlin.