From: Gonglei <arei.gong...@huawei.com>
add global variables releasing logic when the usb buses
were removed or hot-unpluged.
Signed-off-by: Gonglei <arei.gong...@huawei.com>
---
hw/usb/bus.c | 8 ++++++++
include/hw/usb.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/hw/usb/bus.c b/hw/usb/bus.c
index 927a47b..e65f272 100644
--- a/hw/usb/bus.c
+++ b/hw/usb/bus.c
@@ -87,6 +87,14 @@ void usb_bus_new(USBBus *bus, size_t bus_size,
QTAILQ_INSERT_TAIL(&busses, bus, next);
}
+void usb_bus_release(USBBus *bus)
+{
+ assert(next_usb_bus > 0);
+
+ next_usb_bus--;
+ QTAILQ_REMOVE(&busses, bus, next);
+}
+
USBBus *usb_bus_find(int busnr)
{
USBBus *bus;
diff --git a/include/hw/usb.h b/include/hw/usb.h
index 1919bdc..f0f9e73 100644
--- a/include/hw/usb.h
+++ b/include/hw/usb.h
@@ -523,6 +523,7 @@ struct USBBusOps {
void usb_bus_new(USBBus *bus, size_t bus_size,
USBBusOps *ops, DeviceState *host);
+void usb_bus_release(USBBus *bus);
USBBus *usb_bus_find(int busnr);
void usb_legacy_register(const char *typename, const char *usbdevice_name,
USBDevice *(*usbdevice_init)(USBBus *bus,
--
1.7.12.4
