linux-kernel - Re: [PATCH 003/117] Staging: hv: Add struct hv_vmbus_device_id to mod

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Date:	Tue, 23 Aug 2011 15:41:57 -0700
From:	Greg KH <greg@...ah.com>
To:	"K. Y. Srinivasan" <kys@...rosoft.com>
Cc:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org,
	Haiyang Zhang <haiyangz@...rosoft.com>
Subject: Re: [PATCH 003/117] Staging: hv: Add struct hv_vmbus_device_id to
 mod_devicetable.h

On Fri, Jul 15, 2011 at 10:45:51AM -0700, K. Y. Srinivasan wrote:
> In preparation for implementing vmbus aliases for auto-loading
> Hyper-V drivers, define vmbus specific device ID.
> 
> Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
> Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
> ---
>  include/linux/mod_devicetable.h |    7 +++++++
>  1 files changed, 7 insertions(+), 0 deletions(-)
> 
> diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
> index ae28e93..5a12377 100644
> --- a/include/linux/mod_devicetable.h
> +++ b/include/linux/mod_devicetable.h
> @@ -405,6 +405,13 @@ struct virtio_device_id {
>  };
>  #define VIRTIO_DEV_ANY_ID	0xffffffff
>  
> +/*
> + * For Hyper-V devices we use the device guid as the id.
> + */
> +struct hv_vmbus_device_id {
> +	__u8 guid[16];
> +};

Why do you not need a driver_data pointer here?  Are you sure you aren't
ever going to need it in the future?  Hint, I think you will...

greg k-h
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