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由 Jing Liu 提交于
The previous patch moved virtual css bridge and bus out from virtio-ccw, but kept the direct reference of virtio-ccw specific unplug function inside css-bridge.c. To make the virtual css bus and bridge useful for non-virtio devices, this introduces a common unplug function pointer "unplug" to call specific virtio-ccw unplug parts. Thus, the tight coupling to virtio-ccw can be removed. This unplug pointer is a member of CCWDeviceClass, which is introduced as an abstract device layer called "ccw-device". This layer is between DeviceState and specific devices which are plugged in virtual css bus, like virtio-ccw device. The specific unplug handlers should be assigned to "unplug" during initialization. Signed-off-by: NJing Liu <liujbjl@linux.vnet.ibm.com> Reviewed-by: NSascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: NDong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Reviewed-by: NYi Min Zhao <zyimin@linux.vnet.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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