Re: [PATCH RFC] virtio: wrap config->reset calls

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On Wed, Oct 13, 2021 at 01:03:46PM +0200, David Hildenbrand wrote:
> On 13.10.21 12:55, Michael S. Tsirkin wrote:
> > This will enable cleanups down the road.
> > The idea is to disable cbs, then add "flush_queued_cbs" callback
> > as a parameter, this way drivers can flush any work
> > queued after callbacks have been disabled.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> > ---
> >   arch/um/drivers/virt-pci.c                 | 2 +-
> >   drivers/block/virtio_blk.c                 | 4 ++--
> >   drivers/bluetooth/virtio_bt.c              | 2 +-
> >   drivers/char/hw_random/virtio-rng.c        | 2 +-
> >   drivers/char/virtio_console.c              | 4 ++--
> >   drivers/crypto/virtio/virtio_crypto_core.c | 8 ++++----
> >   drivers/firmware/arm_scmi/virtio.c         | 2 +-
> >   drivers/gpio/gpio-virtio.c                 | 2 +-
> >   drivers/gpu/drm/virtio/virtgpu_kms.c       | 2 +-
> >   drivers/i2c/busses/i2c-virtio.c            | 2 +-
> >   drivers/iommu/virtio-iommu.c               | 2 +-
> >   drivers/net/caif/caif_virtio.c             | 2 +-
> >   drivers/net/virtio_net.c                   | 4 ++--
> >   drivers/net/wireless/mac80211_hwsim.c      | 2 +-
> >   drivers/nvdimm/virtio_pmem.c               | 2 +-
> >   drivers/rpmsg/virtio_rpmsg_bus.c           | 2 +-
> >   drivers/scsi/virtio_scsi.c                 | 2 +-
> >   drivers/virtio/virtio.c                    | 5 +++++
> >   drivers/virtio/virtio_balloon.c            | 2 +-
> >   drivers/virtio/virtio_input.c              | 2 +-
> >   drivers/virtio/virtio_mem.c                | 2 +-
> >   fs/fuse/virtio_fs.c                        | 4 ++--
> >   include/linux/virtio.h                     | 1 +
> >   net/9p/trans_virtio.c                      | 2 +-
> >   net/vmw_vsock/virtio_transport.c           | 4 ++--
> >   sound/virtio/virtio_card.c                 | 4 ++--
> >   26 files changed, 39 insertions(+), 33 deletions(-)
> > 
> > diff --git a/arch/um/drivers/virt-pci.c b/arch/um/drivers/virt-pci.c
> > index c08066633023..22c4d87c9c15 100644
> > --- a/arch/um/drivers/virt-pci.c
> > +++ b/arch/um/drivers/virt-pci.c
> > @@ -616,7 +616,7 @@ static void um_pci_virtio_remove(struct virtio_device *vdev)
> >   	int i;
> >           /* Stop all virtqueues */
> > -        vdev->config->reset(vdev);
> > +        virtio_reset_device(vdev);
> >           vdev->config->del_vqs(vdev);
> 
> Nit: virtio_device_reset()?
> 
> Because I see:
> 
> int virtio_device_freeze(struct virtio_device *dev);
> int virtio_device_restore(struct virtio_device *dev);
> void virtio_device_ready(struct virtio_device *dev)
> 
> But well, there is:
> void virtio_break_device(struct virtio_device *dev);

Exactly. I don't know what's best, so I opted for plain english :)


> -- 
> Thanks,
> 
> David / dhildenb




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