linux-kernel - Re: [PATCH v1 1/1] PNP: Export pnp_bus

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Message-ID: <CAJZ5v0i8N-SuKyzm1o601G-G9Jis4uciu3gxO-08GN-X-z0LUA@mail.gmail.com>
Date: Tue, 28 May 2024 11:42:35 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-acpi@...r.kernel.org, 
	linux-kernel@...r.kernel.org, 
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, Guanbing Huang <albanhuang@...look.com>, 
	Guanbing Huang <albanhuang@...cent.com>, Woody Suwalski <terraluna977@...il.com>
Subject: Re: [PATCH v1 1/1] PNP: Export pnp_bus_type for modules

On Mon, May 27, 2024 at 10:24 PM Andy Shevchenko
<andy.shevchenko@...il.com> wrote:
>
> Since we have dev_is_pnp() macro that utilises the address of pnp_bus_type
> variable, the users, which can be compiled as modules, will be failed to
> build. Export the variable to the modules to prevent build breakage.
>
> Reported-by: Woody Suwalski <terraluna977@...il.com>
> Closes: https://lore.kernel.org/r/cc8a93b2-2504-9754-e26c-5d5c3bd1265c@gmail.com
> Fixes: 2a49b45cd0e7 ("PNP: Add dev_is_pnp() macro")
> Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
> ---
>  drivers/pnp/driver.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/pnp/driver.c b/drivers/pnp/driver.c
> index 0a5d0d8befa8..1394d17bd6f7 100644
> --- a/drivers/pnp/driver.c
> +++ b/drivers/pnp/driver.c
> @@ -265,6 +265,7 @@ const struct bus_type pnp_bus_type = {
>         .pm      = &pnp_bus_dev_pm_ops,
>         .dev_groups = pnp_dev_groups,
>  };
> +EXPORT_SYMBOL(pnp_bus_type);

Why not EXPORT_SYMBOL_GPL()?

>  int pnp_register_driver(struct pnp_driver *drv)
>  {
> --
> 2.45.1
>
>