usb-ehci: add vmstate properity for EHCIState

since hotunplug the ehci host adapter, we should
delete vm_change_state_handler also, so the
VMChangeStateEntry should be saved in EHCIState.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 448e007..ef26f36 100644 (file)
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -2468,7 +2468,7 @@ void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp)
     s->device = dev;
 
     qemu_register_reset(ehci_reset, s);
-    qemu_add_vm_change_state_handler(usb_ehci_vm_state_change, s);
+    s->vmstate = qemu_add_vm_change_state_handler(usb_ehci_vm_state_change, s);
 }
 
 void usb_ehci_init(EHCIState *s, DeviceState *dev)

diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h
index 1ad4b96..594d9d3 100644 (file)
--- a/hw/usb/hcd-ehci.h
+++ b/hw/usb/hcd-ehci.h
@@ -316,6 +316,7 @@ struct EHCIState {
     uint32_t async_stepdown;
     uint32_t periodic_sched_active;
     bool int_req_by_async;
+    VMChangeStateEntry *vmstate;
 };
 
 extern const VMStateDescription vmstate_ehci;