On 2012/07/12 10:02 AM, Alan Cox wrote: >> I suppose at a later date we could turn that into a union with a short >> name like u (so comedidev->pcidev would become something like >> comedidev->u.pcidev), which would allow us to stick a 'struct >> usb_interface *' or some other hardware device wrapper struct pointer in >> the same hole. (Maybe 'h' for 'hardware' would be better than 'u'.) > > The "usual" pattern is to make it a struct device pointer. Then you can > get to any other kind of device from it.
You mean with container_of(), right? Actually, 'struct comedi_device' already has a little-used 'struct device *hw_dev' member that could be used for this purpose. -- -=( Ian Abbott @ MEV Ltd. E-mail: <abbo...@mev.co.uk> )=- -=( Tel: +44 (0)161 477 1898 FAX: +44 (0)161 718 3587 )=- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
