> From: Yi Liu
> Sent: Wednesday, April 26, 2023 10:54 PM
> +
> +/*
> + * Return devid for devices that have been bound with iommufd,
> + * returns 0 if not bound yet.
> + */
> +u32 vfio_iommufd_physical_devid(struct vfio_device *vdev)
> +{
> + if (WARN_ON(!vdev->iommufd_device && !vdev->iommufd_access))
> + return 0;
is WARN_ON too restrictive?
