Re: [RFC PATCH v3 2/4] remoteproc: core: Introduce rproc_register_rvdev function

[Mathieu Poirier]

On Wed, Jan 26, 2022 at 05:24:03PM +0100, Arnaud Pouliquen wrote:
> The rproc structure contains a list of registered rproc_vdev structure.
> To be able to move the management of the rproc_vdev structure in
> remoteproc_virtio.c (i.e rproc_rvdev_add_device and
> rproc_rvdev_remove_device functions), introduce the rproc_register_rvdev
> and rproc_unregister_rvdev functions.
> These functions will be exported by the remoteproc_core.c.

This last sentence is very confusing... I kept an eye out for the EXPORT_SYMBOL()
tag but never found it.  Please remove.

> 
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxxxxxxx>
> ---
>  drivers/remoteproc/remoteproc_core.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
> index 83ff44a6a4db..7a091f860c82 100644
> --- a/drivers/remoteproc/remoteproc_core.c
> +++ b/drivers/remoteproc/remoteproc_core.c
> @@ -491,6 +491,18 @@ static int copy_dma_range_map(struct device *to, struct device *from)
>  	return 0;
>  }
>  
> +static void rproc_register_rvdev(struct rproc *rproc, struct rproc_vdev *rvdev)
> +{
> +	if (rvdev && rproc)
> +		list_add_tail(&rvdev->node, &rproc->rvdevs);
> +}

I would call those rproc_add_rvdev() and rproc_remove_rvdev() to follow in the
footsteps of rproc_add_subdev() and rproc_remove_subdev().

> +
> +static void rproc_unregister_rvdev(struct rproc_vdev *rvdev)
> +{
> +	if (rvdev)
> +		list_del(&rvdev->node);
> +}
> +
>  static struct rproc_vdev *
>  rproc_rvdev_add_device(struct rproc *rproc, struct rproc_vdev_data *rvdev_data)
>  {
> @@ -554,7 +566,7 @@ rproc_rvdev_add_device(struct rproc *rproc, struct rproc_vdev_data *rvdev_data)
>  			goto unwind_vring_allocations;
>  	}
>  
> -	list_add_tail(&rvdev->node, &rproc->rvdevs);
> +	rproc_register_rvdev(rproc, rvdev);
>  
>  	rvdev->subdev.start = rproc_vdev_do_start;
>  	rvdev->subdev.stop = rproc_vdev_do_stop;
> @@ -583,7 +595,7 @@ static void rproc_rvdev_remove_device(struct rproc_vdev *rvdev)
>  	}
>  
>  	rproc_remove_subdev(rproc, &rvdev->subdev);
> -	list_del(&rvdev->node);
> +	rproc_unregister_rvdev(rvdev);
>  	device_unregister(&rvdev->dev);
>  }
>  
> -- 
> 2.25.1
>