linux-kernel - Re: [PATCH 2/2] gpio: sifive: Allow building the driver as a module

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Message-ID: <CAMRc=MdaS9PXE1xxSyBSxVhv-B6TNwot0+TLoF1-cNcLYaQ-WQ@mail.gmail.com>
Date:   Wed, 19 Jul 2023 13:29:43 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Samuel Holland <samuel.holland@...ive.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andy@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH 2/2] gpio: sifive: Allow building the driver as a module

On Mon, Jul 17, 2023 at 10:54 PM Samuel Holland
<samuel.holland@...ive.com> wrote:
>
> This can reduce the kernel image size in multiplatform configurations.
>
> Signed-off-by: Samuel Holland <samuel.holland@...ive.com>
> ---
>
>  drivers/gpio/Kconfig       | 2 +-
>  drivers/gpio/gpio-sifive.c | 4 +++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
> index e382dfebad7c..1a8e8a8c85d6 100644
> --- a/drivers/gpio/Kconfig
> +++ b/drivers/gpio/Kconfig
> @@ -564,7 +564,7 @@ config GPIO_SAMA5D2_PIOBU
>           maintain their value during backup/self-refresh.
>
>  config GPIO_SIFIVE
> -       bool "SiFive GPIO support"
> +       tristate "SiFive GPIO support"
>         depends on OF_GPIO
>         select IRQ_DOMAIN_HIERARCHY
>         select GPIO_GENERIC
> diff --git a/drivers/gpio/gpio-sifive.c b/drivers/gpio/gpio-sifive.c
> index 745e5f67254e..5941a817491c 100644
> --- a/drivers/gpio/gpio-sifive.c
> +++ b/drivers/gpio/gpio-sifive.c
> @@ -277,4 +277,6 @@ static struct platform_driver sifive_gpio_driver = {
>                 .of_match_table = sifive_gpio_match,
>         },
>  };
> -builtin_platform_driver(sifive_gpio_driver)
> +module_platform_driver(sifive_gpio_driver)
> +
> +MODULE_LICENSE("GPL");
> --
> 2.40.1
>

This looks good but please follow Andy's suggestion and convert all
of_*() uses in the driver to generic helpers, then drop patch 1.

Bart