vfio: Cleanup allowed driver naming

 * that error notification via MSI can be affected for platforms that handle

 * MSI within the same IOVA space as DMA.

 */

static const char * const vfio_driver_whitelist[] = { "pci-stub" };

static const char * const vfio_driver_allowed[] = { "pci-stub" };

static bool vfio_dev_whitelisted(struct device *dev, struct device_driver *drv)

static bool vfio_dev_driver_allowed(struct device *dev,

				    struct device_driver *drv)

{

	if (dev_is_pci(dev)) {

		struct pci_dev *pdev = to_pci_dev(dev);

			return true;

	}

	return match_string(vfio_driver_whitelist,

			    ARRAY_SIZE(vfio_driver_whitelist),

	return match_string(vfio_driver_allowed,

			    ARRAY_SIZE(vfio_driver_allowed),

			    drv->name) >= 0;

}

 * one of the following states:

 *  - driver-less

 *  - bound to a vfio driver

 *  - bound to a whitelisted driver

 *  - bound to an otherwise allowed driver

 *  - a PCI interconnect device

 *

 * We use two methods to determine whether a device is bound to a vfio

	}

	mutex_unlock(&group->unbound_lock);

	if (!ret || !drv || vfio_dev_whitelisted(dev, drv))

	if (!ret || !drv || vfio_dev_driver_allowed(dev, drv))

		return 0;

	device = vfio_group_get_device(group, dev);