linux-kernel - Re: [PATCH v2 02/17] rpmsg: Name rpmsg devices based on channel id

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Date:   Wed, 07 Sep 2016 18:46:44 -0700
From:   spjoshi@...eaurora.org
To:     Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Ohad Ben-Cohen <ohad@...ery.com>, linux-arm-msm@...r.kernel.org,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 02/17] rpmsg: Name rpmsg devices based on channel id

On 2016-09-01 15:27, Bjorn Andersson wrote:
> By basing rpmsg device names on channel id we end up with human 
> readable
> device names in sysfs and debug logs.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
> 
> Changes since v1:
> - None
> 
>  drivers/rpmsg/virtio_rpmsg_bus.c | 12 ++----------
>  1 file changed, 2 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c 
> b/drivers/rpmsg/virtio_rpmsg_bus.c
> index 495fa0a282d3..c4bd89ea7681 100644
> --- a/drivers/rpmsg/virtio_rpmsg_bus.c
> +++ b/drivers/rpmsg/virtio_rpmsg_bus.c
> @@ -136,14 +136,6 @@ rpmsg_show_attr(src, src, "0x%x\n");
>  rpmsg_show_attr(dst, dst, "0x%x\n");
>  rpmsg_show_attr(announce, announce ? "true" : "false", "%s\n");
> 
> -/*
> - * Unique (and free running) index for rpmsg devices.
> - *
> - * Yeah, we're not recycling those numbers (yet?). will be easy
> - * to change if/when we want to.
> - */
> -static unsigned int rpmsg_dev_index;
> -
>  static ssize_t modalias_show(struct device *dev,
>  			     struct device_attribute *attr, char *buf)
>  {
> @@ -531,8 +523,8 @@ static struct rpmsg_channel
> *rpmsg_create_channel(struct virtproc_info *vrp,
> 
>  	strncpy(rpdev->id.name, chinfo->name, RPMSG_NAME_SIZE);
> 
> -	/* very simple device indexing plumbing which is enough for now */
> -	dev_set_name(&rpdev->dev, "rpmsg%d", rpmsg_dev_index++);
> +	dev_set_name(&rpdev->dev, "%s:%s",
> +		     dev_name(dev->parent), rpdev->id.name);
> 
>  	rpdev->dev.parent = &vrp->vdev->dev;
>  	rpdev->dev.bus = &rpmsg_bus;

Reviewed-by: Sarangdhar Joshi <spjoshi@...eaurora.org>

Sarang

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