linux-kernel - Re: [RFC v2 1/4] i3c: master: export i3c_masterdev

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Date:   Mon, 17 Feb 2020 15:56:23 +0100
From:   Boris Brezillon <boris.brezillon@...labora.com>
To:     Vitor Soares <Vitor.Soares@...opsys.com>
Cc:     linux-kernel@...r.kernel.org, linux-i3c@...ts.infradead.org,
        Joao.Pinto@...opsys.com, Jose.Abreu@...opsys.com,
        bbrezillon@...nel.org, gregkh@...uxfoundation.org,
        wsa@...-dreams.de, arnd@...db.de, broonie@...nel.org
Subject: Re: [RFC v2 1/4] i3c: master: export i3c_masterdev_type

On Wed, 29 Jan 2020 13:17:32 +0100
Vitor Soares <Vitor.Soares@...opsys.com> wrote:

> Exporte i3c_masterdev_type so i3cdev module can verify if an i3c device
> is a master.
> 
> Signed-off-by: Vitor Soares <vitor.soares@...opsys.com>
> ---
>  drivers/i3c/internals.h | 1 +
>  drivers/i3c/master.c    | 3 ++-
>  2 files changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/i3c/internals.h b/drivers/i3c/internals.h
> index 86b7b44..bc062e8 100644
> --- a/drivers/i3c/internals.h
> +++ b/drivers/i3c/internals.h
> @@ -11,6 +11,7 @@
>  #include <linux/i3c/master.h>
>  
>  extern struct bus_type i3c_bus_type;
> +extern const struct device_type i3c_masterdev_type;
>  
>  void i3c_bus_normaluse_lock(struct i3c_bus *bus);
>  void i3c_bus_normaluse_unlock(struct i3c_bus *bus);
> diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
> index 7f8f896..8a0ba34 100644
> --- a/drivers/i3c/master.c
> +++ b/drivers/i3c/master.c
> @@ -523,9 +523,10 @@ static void i3c_masterdev_release(struct device *dev)
>  	of_node_put(dev->of_node);
>  }
>  
> -static const struct device_type i3c_masterdev_type = {
> +const struct device_type i3c_masterdev_type = {
>  	.groups	= i3c_masterdev_groups,
>  };
> +EXPORT_SYMBOL_GPL(i3c_masterdev_type);

No need to export the symbol, removing the static and adding the
definition to internal.h should work just fine (i3c.o contains
both master.o and device.o).

>  
>  static int i3c_bus_set_mode(struct i3c_bus *i3cbus, enum i3c_bus_mode mode,
>  			    unsigned long max_i2c_scl_rate)