linux-kernel - Re: [PATCH v5 2/7] gpio: ep93xx: Fix single irqchip with multi gpiochips

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Date:   Mon, 8 Feb 2021 15:20:17 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Nikita Shubin <nikita.shubin@...uefel.me>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Alexander Sverdlin <alexander.sverdlin@...il.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 2/7] gpio: ep93xx: Fix single irqchip with multi gpiochips

On Mon, Feb 8, 2021 at 11:00 AM Nikita Shubin <nikita.shubin@...uefel.me> wrote:
>
> Fixes the following warnings which results in interrupts disabled on
> port B/F:
>
> gpio gpiochip1: (B): detected irqchip that is shared with multiple gpiochips: please fix the driver.
> gpio gpiochip5: (F): detected irqchip that is shared with multiple gpiochips: please fix the driver.
>
> - added separate irqchip for each interrupt capable gpiochip
> - provided unique names for each irqchip

...

> +static void ep93xx_init_irq_chip(struct device *dev, struct irq_chip *ic, const char *label)
> +{

> +       ic->name = devm_kasprintf(dev, GFP_KERNEL, "gpio-irq-%s", label);

Is the label being NULL okay?

> +       ic->irq_ack = ep93xx_gpio_irq_ack;
> +       ic->irq_mask_ack = ep93xx_gpio_irq_mask_ack;
> +       ic->irq_mask = ep93xx_gpio_irq_mask;
> +       ic->irq_unmask = ep93xx_gpio_irq_unmask;
> +       ic->irq_set_type = ep93xx_gpio_irq_type;
> +}

...

> -               girq->chip = &ep93xx_gpio_irq_chip;

I don't see where you remove that static structure.

-- 
With Best Regards,
Andy Shevchenko