linux-kernel - Re: [PATCH] virtio: fix virtio_config

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Date:   Tue, 20 Dec 2022 10:48:27 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Ricardo Cañuelo <ricardo.canuelo@...labora.com>,
        mst@...hat.com
Cc:     sfr@...b.auug.org.au, linux-kernel@...r.kernel.org,
        linux-next@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, kernel@...labora.com
Subject: Re: [PATCH] virtio: fix virtio_config_ops kerneldocs

Il 20/12/22 08:37, Ricardo Cañuelo ha scritto:
> Fixes two warning messages when building htmldocs:
> 
>      warning: duplicate section name 'Note'
>      warning: expecting prototype for virtio_config_ops().
>               Prototype was for vq_callback_t() instead
> 
> Signed-off-by: Ricardo Cañuelo <ricardo.canuelo@...labora.com>
> ---
>   include/linux/virtio_config.h | 9 +++++----
>   1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
> index 4b517649cfe8..f9a33062c089 100644
> --- a/include/linux/virtio_config.h
> +++ b/include/linux/virtio_config.h
> @@ -16,8 +16,10 @@ struct virtio_shm_region {
>   	u64 len;
>   };
>   
> +typedef void vq_callback_t(struct virtqueue *);
> +
>   /**
> - * virtio_config_ops - operations for configuring a virtio device
> + * struct virtio_config_ops - operations for configuring a virtio device
>    * Note: Do not assume that a transport implements all of the operations
>    *       getting/setting a value as a simple read/write! Generally speaking,
>    *       any of @get/@set, @get_status/@..._status, or @get_features/
> @@ -68,8 +70,8 @@ struct virtio_shm_region {
>    * @finalize_features: confirm what device features we'll be using.
>    *	vdev: the virtio_device
>    *	This sends the driver feature bits to the device: it can change
> - *	the dev->feature bits if it wants.
> - * Note: despite the name this can be called any number of times.
> + *	the dev->feature bits if it wants. Note: despite the name this
> + *	can be called any number of times.

To avoid getting the same warning in the future (developer mistake and/or other
reasons), what about dropping this instance of "Note:" entirely?

I think that something like...

the dev->feature bits if it wants. Note that despite the name....

Cheers,
Angelo