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Date:   Tue, 15 Dec 2020 16:43:41 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Saeed Mahameed <saeed@...nel.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jason Gunthorpe <jgg@...dia.com>,
        Leon Romanovsky <leonro@...dia.com>, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, David Ahern <dsahern@...nel.org>,
        Jacob Keller <jacob.e.keller@...el.com>,
        Sridhar Samudrala <sridhar.samudrala@...el.com>,
        david.m.ertman@...el.com, dan.j.williams@...el.com,
        kiran.patil@...el.com, gregkh@...uxfoundation.org,
        Parav Pandit <parav@...dia.com>, Vu Pham <vuhuong@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: Re: [net-next v5 07/15] net/mlx5: SF, Add auxiliary device support

On Tue, 15 Dec 2020 01:03:50 -0800 Saeed Mahameed wrote:
> +static ssize_t sfnum_show(struct device *dev, struct device_attribute *attr, char *buf)
> +{
> +	struct auxiliary_device *adev = container_of(dev, struct auxiliary_device, dev);
> +	struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
> +
> +	return scnprintf(buf, PAGE_SIZE, "%u\n", sf_dev->sfnum);
> +}
> +static DEVICE_ATTR_RO(sfnum);
> +
> +static struct attribute *sf_device_attrs[] = {
> +	&dev_attr_sfnum.attr,
> +	NULL,
> +};
> +
> +static const struct attribute_group sf_attr_group = {
> +	.attrs = sf_device_attrs,
> +};
> +
> +static const struct attribute_group *sf_attr_groups[2] = {
> +	&sf_attr_group,
> +	NULL
> +};

Why the sysfs attribute? Devlink should be able to report device name
so there's no need for a tie in from the other end.

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