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usb: add usb_bus_release function

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add global variables releasing logic when the usb buses
were removed or hot-unpluged.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gonglei 2014-06-04 16:31:46 +08:00 committed by Gerd Hoffmann
parent f90e160b50
commit e5a9bece9b
2 changed files with 8 additions and 0 deletions
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7
hw/usb/bus.c
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@ -87,6 +87,13 @@ 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);
QTAILQ_REMOVE(&busses, bus, next);
}
USBBus *usb_bus_find(int busnr)
{
USBBus *bus;

1
include/hw/usb.h
View File

@ -529,6 +529,7 @@ 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,