usb: ehci: fix memory leak in ehci

In usb_ehci_init function, it initializes 's->ipacket', but there
is no corresponding function to free this. As the ehci can be hotplug
and unplug, this will leak host memory leak. In order to make the
hierarchy clean, we should add a ehci pci finalize function, then call
the clean function in ehci device.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Message-id: 589a85b8.3c2b9d0a.b8e6.1434@mx.google.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/hw/usb/hcd-ehci-pci.c b/hw/usb/hcd-ehci-pci.c
index 56577051e2..6dedcb8989 100644
--- a/hw/usb/hcd-ehci-pci.c
+++ b/hw/usb/hcd-ehci-pci.c
@@ -89,6 +89,14 @@ static void usb_ehci_pci_init(Object *obj)
     usb_ehci_init(s, DEVICE(obj));
 }
 
+static void usb_ehci_pci_finalize(Object *obj)
+{
+    EHCIPCIState *i = PCI_EHCI(obj);
+    EHCIState *s = &i->ehci;
+
+    usb_ehci_finalize(s);
+}
+
 static void usb_ehci_pci_exit(PCIDevice *dev)
 {
     EHCIPCIState *i = PCI_EHCI(dev);
@@ -159,6 +167,7 @@ static const TypeInfo ehci_pci_type_info = {
     .parent = TYPE_PCI_DEVICE,
     .instance_size = sizeof(EHCIPCIState),
     .instance_init = usb_ehci_pci_init,
+    .instance_finalize = usb_ehci_pci_finalize,
     .abstract = true,
     .class_init = ehci_class_init,
 };