[Qemu-devel] [PATCH v2 7/9] usb-ehci: add ehci-pci device exit function

[arei.gonglei]

From: Gonglei <arei.gong...@huawei.com>

clean up ehci resource when ehci pci device exit.

Signed-off-by: Gonglei <arei.gong...@huawei.com>
---
 hw/usb/hcd-ehci-pci.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/hw/usb/hcd-ehci-pci.c b/hw/usb/hcd-ehci-pci.c
index 505741a..115d9b5 100644
--- a/hw/usb/hcd-ehci-pci.c
+++ b/hw/usb/hcd-ehci-pci.c
@@ -84,6 +84,38 @@ static void usb_ehci_pci_init(Object *obj)
     usb_ehci_init(s, DEVICE(obj));
 }
 
+static void usb_ehci_pci_exit(PCIDevice *dev)
+{
+    EHCIPCIState *i = PCI_EHCI(dev);
+    EHCIState *s = &i->ehci;
+
+    if (s->frame_timer) {
+        timer_del(s->frame_timer);
+        timer_free(s->frame_timer);
+        s->frame_timer = NULL;
+    }
+    if (s->async_bh) {
+        qemu_bh_delete(s->async_bh);
+    }
+
+    ehci_queues_rip_all(s, 0);
+    ehci_queues_rip_all(s, 1);
+
+    memory_region_del_subregion(&s->mem, &s->mem_caps);
+    memory_region_del_subregion(&s->mem, &s->mem_opreg);
+    memory_region_del_subregion(&s->mem, &s->mem_ports);
+    memory_region_destroy(&s->mem_caps);
+    memory_region_destroy(&s->mem_opreg);
+    memory_region_destroy(&s->mem_ports);
+    memory_region_destroy(&s->mem);
+
+    usb_bus_release(&s->bus);
+
+    if (s->vmstate) {
+        qemu_del_vm_change_state_handler(s->vmstate);
+    }
+}
+
 static void usb_ehci_pci_write_config(PCIDevice *dev, uint32_t addr,
                                       uint32_t val, int l)
 {
@@ -121,6 +153,7 @@ static void ehci_class_init(ObjectClass *klass, void *data)
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
     k->init = usb_ehci_pci_initfn;
+    k->exit = usb_ehci_pci_exit;
     k->class_id = PCI_CLASS_SERIAL_USB;
     k->config_write = usb_ehci_pci_write_config;
     dc->hotpluggable = false;
-- 
1.7.12.4