struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));
struct Scsi_Host *host = pci_get_drvdata(pdev);
static void twa_shutdown(struct device *dev){	struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));	TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;	__twa_shutdown(tw_dev);} /* End twa_shutdown() */