> -----Original Message----- > From: Greg KH [mailto:[email protected]] > Sent: Tuesday, August 23, 2011 6:42 PM > To: KY Srinivasan > Cc: [email protected]; [email protected]; > [email protected]; [email protected]; Haiyang Zhang > 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 <[email protected]> > > Signed-off-by: Haiyang Zhang <[email protected]> > > --- > > 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...
I am not sure I am following you here; the guid is the device ID and it is guaranteed to remain the same. What is the driver _data pointer here you are referring to here. While some device id have the _data pointer, there are others that don't - for instance struct virtio_device_id. In our case, I am not sure how I would use this private pointer. Regards, K. Y > > greg k-h _______________________________________________ Virtualization mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/virtualization
