linux-kernel - Re: [PATCH char-misc-next v2 2/8] misc: mic: add a bus driver for virtual MIC devices

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Date:	Wed, 9 Jul 2014 17:42:02 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Sudeep Dutt <sudeep.dutt@...el.com>
Cc:	Dan Williams <dan.j.williams@...el.com>,
	Siva Yerramreddy <yshivakrishna@...il.com>,
	Ashutosh Dixit <ashutosh.dixit@...el.com>,
	Nikhil Rao <nikhil.rao@...el.com>,
	linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org
Subject: Re: [PATCH char-misc-next v2 2/8] misc: mic: add a bus driver for
 virtual MIC devices

On Thu, May 29, 2014 at 02:23:59PM -0700, Sudeep Dutt wrote:
> +/**
> + * mbus_device - representation of a device using mbus
> + * @priv: private pointer for the driver's use.
> + * @mmio_va: virtual address of mmio space
> + * @hw_ops: the hardware ops supported by this device.
> + * @id: the device type identification (used to match it with a driver).
> + * @dev: underlying device.
> + * be used to communicate with.
> + * @index: unique position on the mbus bus
> + */
> +struct mbus_device {
> +	void *priv;

What's wrong with the built-in "private" pointer that struct device has?
That is why it is there...

> +	void __iomem *mmio_va;
> +	struct mbus_hw_ops *hw_ops;
> +	struct mbus_device_id id;
> +	struct device dev;
> +	int index;
> +};

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