virtio-ccw: move virtio_ccw_stop_ioeventfd to virtio_ccw_busdev_unplug
Similar to the PCI bug that prompted these patches, virtio-ccw will segfault after the reworking of hotplug/hot-unplug. Prepare for this by moving virtio_ccw_stop_ioeventfd to before the freeing of the proxy device. A better place for this could be the device_unplugged callback for the virtio-ccw bus. However, we do not yet have a callback that works: this patch avoids the problem while leaving the tree bisectable. Cc: qemu-stable@nongnu.org Reported-by: NCornelia Huck <cornelia.huck@de.ibm.com> Suggested-by: NCornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Acked-by: NAndreas Faerber <afaerber@suse.de> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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