RE: [RFC] Revert "virtio_pci: Support surprise removal of virtio pci

["Li,Rongqing" <lirongqing@baidu.com>]

> > diff --git a/drivers/virtio/virtio_pci_common.c
> > b/drivers/virtio/virtio_pci_common.c
> > index 7a55939..d60fe99 100644
> > --- a/drivers/virtio/virtio_pci_common.c
> > +++ b/drivers/virtio/virtio_pci_common.c
> > @@ -584,13 +584,6 @@ static void virtio_pci_remove(struct pci_dev
> *pci_dev)
> >         struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
> >         struct device *dev = get_device(&vp_dev->vdev.dev);
> >
> > -       /*
> > -        * Device is marked broken on surprise removal so that virtio upper
> > -        * layers can abort any ongoing operation.
> > -        */
> > -       if (!pci_device_is_present(pci_dev))
> > -               virtio_break_device(&vp_dev->vdev);
> > -
> >         pci_disable_sriov(pci_dev);
> 
> 
> Maybe break device is not the right thing to do. Indeed, request buffers which
> have been already used are not completed by driver.

True, break device makes virtio-blk no longer work for surprise removal

And seems no simple method can work for all devices.

-Li