linux-kernel - Re: [PATCH 1/3] gpio: mxc: Support module build

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Date:   Sat, 11 Jul 2020 23:17:44 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     Russell King <linux@...linux.org.uk>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        oleksandr.suvorov@...adex.com, Adam Ford <aford173@...il.com>,
        Andreas Kemnade <andreas@...nade.info>,
        hverkuil-cisco@...all.nl,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Leo Li <leoyang.li@....com>, Vinod Koul <vkoul@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Olof Johansson <olof@...om.net>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        NXP Linux Team <Linux-imx@....com>
Subject: Re: [PATCH 1/3] gpio: mxc: Support module build

On Wed, Jul 8, 2020 at 1:28 AM Anson Huang <Anson.Huang@....com> wrote:

>  subsys_initcall(gpio_mxc_init);
> +
> +MODULE_AUTHOR("Shawn Guo <shawn.guo@...aro.org>");
> +MODULE_DESCRIPTION("i.MX GPIO Driver");
> +MODULE_LICENSE("GPL");

You are making this modualrizable but keeping the subsys_initcall(),
which doesn't make very much sense. It is obviously not necessary
to do this probe at subsys_initcall() time, right?

Take this opportunity to convert the driver to use
module_platform_driver() as well.

Yours,
Linus Walleij