linux-kernel - Re: [PATCH 1/1] gpio: vf610: make irq

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Date:   Tue, 14 Feb 2023 12:52:13 +0200
From:   andy.shevchenko@...il.com
To:     Alexander Stein <alexander.stein@...tq-group.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] gpio: vf610: make irq_chip immutable

Tue, Feb 14, 2023 at 08:36:38AM +0100, Alexander Stein kirjoitti:
> Since recently, the kernel is nagging about mutable irq_chips:
> 
>     "not an immutable chip, please consider fixing it!"
> 
> Drop the unneeded copy, flag it as IRQCHIP_IMMUTABLE, add the new
> helper functions and call the appropriate gpiolib functions.

...

> The overall changes are based on commit f1138dacb7ff
> ("gpio: sch: make irq_chip immutable")

Nice, but you forgot one crucial detail. You need to mark GPIO resuested
whenever it's locked as IRQ and otherwise when unlocked.

-- 
With Best Regards,
Andy Shevchenko