linux-kernel - Re: [PATCH v2 3/7] rpmsg: Update rpmsg_chrdev_register

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Date:   Wed, 21 Apr 2021 12:06:32 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Ohad Ben-Cohen <ohad@...ery.com>,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH v2 3/7] rpmsg: Update rpmsg_chrdev_register_device
 function

On Tue, Apr 13, 2021 at 03:44:54PM +0200, Arnaud Pouliquen wrote:
> The rpmsg_chrdev driver has been replaced by the rpmsg_ctrl driver
> for the /dev/rpmsg_ctrlX devices management. The reference for the
> driver override is now the rpmsg_ctrl.
> 
> Update the rpmsg_chrdev_register_device function to reflect the update,
> and rename the function to use the rpmsg_ctrldev prefix.
> 
> The platform drivers are updated accordingly.
> 
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
> 
> ---
> update from v1
> - move the rename of the rpmsg_ctrl driver from previous patch to
>   this one.
> ---
>  drivers/rpmsg/qcom_glink_native.c | 2 +-
>  drivers/rpmsg/qcom_smd.c          | 2 +-
>  drivers/rpmsg/rpmsg_ctrl.c        | 2 +-
>  drivers/rpmsg/rpmsg_internal.h    | 8 ++++----
>  drivers/rpmsg/virtio_rpmsg_bus.c  | 2 +-
>  5 files changed, 8 insertions(+), 8 deletions(-)
>

Reviewed-by: Mathieu Poirier <mathieu.poirier@...aro.org>
 
> diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
> index 05533c71b10e..7d7e809800ec 100644
> --- a/drivers/rpmsg/qcom_glink_native.c
> +++ b/drivers/rpmsg/qcom_glink_native.c
> @@ -1642,7 +1642,7 @@ static int qcom_glink_create_chrdev(struct qcom_glink *glink)
>  	rpdev->dev.parent = glink->dev;
>  	rpdev->dev.release = qcom_glink_device_release;
>  
> -	return rpmsg_chrdev_register_device(rpdev);
> +	return rpmsg_ctrldev_register_device(rpdev);
>  }
>  
>  struct qcom_glink *qcom_glink_native_probe(struct device *dev,
> diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
> index 8da1b5cb31b3..d223e438d17c 100644
> --- a/drivers/rpmsg/qcom_smd.c
> +++ b/drivers/rpmsg/qcom_smd.c
> @@ -1113,7 +1113,7 @@ static int qcom_smd_create_chrdev(struct qcom_smd_edge *edge)
>  	qsdev->rpdev.dev.parent = &edge->dev;
>  	qsdev->rpdev.dev.release = qcom_smd_release_device;
>  
> -	return rpmsg_chrdev_register_device(&qsdev->rpdev);
> +	return rpmsg_ctrldev_register_device(&qsdev->rpdev);
>  }
>  
>  /*
> diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c
> index a5bb9ed97f32..059c228d0045 100644
> --- a/drivers/rpmsg/rpmsg_ctrl.c
> +++ b/drivers/rpmsg/rpmsg_ctrl.c
> @@ -180,7 +180,7 @@ static struct rpmsg_driver rpmsg_ctrldev_driver = {
>  	.probe = rpmsg_ctrldev_probe,
>  	.remove = rpmsg_ctrldev_remove,
>  	.drv = {
> -		.name = "rpmsg_chrdev",
> +		.name = "rpmsg_ctrl",
>  	},
>  };
>  
> diff --git a/drivers/rpmsg/rpmsg_internal.h b/drivers/rpmsg/rpmsg_internal.h
> index a76c344253bf..8c500a8f29aa 100644
> --- a/drivers/rpmsg/rpmsg_internal.h
> +++ b/drivers/rpmsg/rpmsg_internal.h
> @@ -82,16 +82,16 @@ struct rpmsg_device *rpmsg_create_channel(struct rpmsg_device *rpdev,
>  int rpmsg_release_channel(struct rpmsg_device *rpdev,
>  			  struct rpmsg_channel_info *chinfo);
>  /**
> - * rpmsg_chrdev_register_device() - register chrdev device based on rpdev
> + * rpmsg_ctrl_register_device() - register a char device for control based on rpdev
>   * @rpdev:	prepared rpdev to be used for creating endpoints
>   *
>   * This function wraps rpmsg_register_device() preparing the rpdev for use as
>   * basis for the rpmsg chrdev.
>   */
> -static inline int rpmsg_chrdev_register_device(struct rpmsg_device *rpdev)
> +static inline int rpmsg_ctrldev_register_device(struct rpmsg_device *rpdev)
>  {
> -	strcpy(rpdev->id.name, "rpmsg_chrdev");
> -	rpdev->driver_override = "rpmsg_chrdev";
> +	strcpy(rpdev->id.name, "rpmsg_ctrl");
> +	rpdev->driver_override = "rpmsg_ctrl";
>  
>  	return rpmsg_register_device(rpdev);
>  }
> diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c
> index 8e49a3bacfc7..e42234a3e2ab 100644
> --- a/drivers/rpmsg/virtio_rpmsg_bus.c
> +++ b/drivers/rpmsg/virtio_rpmsg_bus.c
> @@ -840,7 +840,7 @@ static struct rpmsg_device *rpmsg_virtio_add_ctrl_dev(struct virtio_device *vdev
>  	rpdev_ctrl->dev.release = virtio_rpmsg_release_device;
>  	rpdev_ctrl->little_endian = virtio_is_little_endian(vrp->vdev);
>  
> -	err = rpmsg_chrdev_register_device(rpdev_ctrl);
> +	err = rpmsg_ctrldev_register_device(rpdev_ctrl);
>  	if (err) {
>  		kfree(vch);
>  		return ERR_PTR(err);
> -- 
> 2.17.1
>