Re: [PATCH 2/4] rpmsg: ctrl: Introduce RPMSG_RELEASE_DEV_IOCTL

From: Mathieu Poirier <mathieu.poirier@linaro.org>
To: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Ohad Ben-Cohen <ohad@wizery.com>,
	linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com
Subject: Re: [PATCH 2/4] rpmsg: ctrl: Introduce RPMSG_RELEASE_DEV_IOCTL
Date: Tue, 15 Jun 2021 11:38:44 -0600	[thread overview]
Message-ID: <20210615173844.GA604521@p14s> (raw)
In-Reply-To: <20210604091406.15901-3-arnaud.pouliquen@foss.st.com>

Good day,

On Fri, Jun 04, 2021 at 11:14:04AM +0200, Arnaud Pouliquen wrote:
> Implement the RPMSG_RELEASE_DEV_IOCTL to allow the user application to
> release a rpmsg device created either by the remote processor or with
> the RPMSG_CREATE_DEV_IOCTL call.
> Depending on the back-end implementation, the associated rpmsg driver is
> removed and a NS destroy rpmsg can be sent to the remote processor.
> 
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
> ---
>  drivers/rpmsg/rpmsg_ctrl.c | 7 +++++++
>  include/uapi/linux/rpmsg.h | 5 +++++
>  2 files changed, 12 insertions(+)
> 
> diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c
> index 4aa962df3661..cb19e32d05e1 100644
> --- a/drivers/rpmsg/rpmsg_ctrl.c
> +++ b/drivers/rpmsg/rpmsg_ctrl.c
> @@ -98,6 +98,13 @@ static long rpmsg_ctrldev_ioctl(struct file *fp, unsigned int cmd,
>  		}
>  		break;
>  
> +	case RPMSG_RELEASE_DEV_IOCTL:
> +		ret = rpmsg_release_channel(ctrldev->rpdev, &chinfo);
> +		if (ret)
> +			dev_err(&ctrldev->dev, "failed to release %s channel (%d)\n",
> +				chinfo.name, ret);
> +		break;
> +

Please move the content of this patch in 1/4.  

>  	default:
>  		ret = -EINVAL;
>  	}
> diff --git a/include/uapi/linux/rpmsg.h b/include/uapi/linux/rpmsg.h
> index f9d5a74e7801..38639ba37438 100644
> --- a/include/uapi/linux/rpmsg.h
> +++ b/include/uapi/linux/rpmsg.h
> @@ -38,4 +38,9 @@ struct rpmsg_endpoint_info {
>   */
>  #define RPMSG_CREATE_DEV_IOCTL	_IOW(0xb5, 0x3, struct rpmsg_endpoint_info)
>  
> +/**
> + * Release a local rpmsg device.
> + */
> +#define RPMSG_RELEASE_DEV_IOCTL	_IOW(0xb5, 0x4, struct rpmsg_endpoint_info)
> +
>  #endif
> -- 
> 2.17.1
> 