linux-kernel - Re: [PATCH 2/2] media: media-devnode: make media_bus

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Date: Sun, 4 Feb 2024 10:47:12 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: "Ricardo B. Marliere" <ricardo@...liere.net>
Cc: Hans Verkuil <hverkuil-cisco@...all.nl>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] media: media-devnode: make media_bus_type const

Hi Ricardo,

Thank you for the patch.

On Sat, Feb 03, 2024 at 12:31:27PM -0300, Ricardo B. Marliere wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the media_bus_type variable to be a constant structure as well,
> placing it into read-only memory which can not be modified at runtime.
> 
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Suggested-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>

> ---
>  drivers/media/mc/mc-devnode.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/mc/mc-devnode.c b/drivers/media/mc/mc-devnode.c
> index 680fbb3a9340..90646805bd81 100644
> --- a/drivers/media/mc/mc-devnode.c
> +++ b/drivers/media/mc/mc-devnode.c
> @@ -63,7 +63,7 @@ static void media_devnode_release(struct device *cd)
>  	pr_debug("%s: Media Devnode Deallocated\n", __func__);
>  }
>  
> -static struct bus_type media_bus_type = {
> +static const struct bus_type media_bus_type = {
>  	.name = MEDIA_NAME,
>  };
>  
> 

-- 
Regards,

Laurent Pinchart