diff options
Diffstat (limited to 'hw/isa')
| -rw-r--r-- | hw/isa/isa-bus.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c index a289ecc..f1e0f14 100644 --- a/hw/isa/isa-bus.c +++ b/hw/isa/isa-bus.c @@ -52,18 +52,25 @@ static const TypeInfo isa_bus_info = { ISABus *isa_bus_new(DeviceState *dev, MemoryRegion* address_space, MemoryRegion *address_space_io, Error **errp) { + DeviceState *bridge = NULL; + if (isabus) { error_setg(errp, "Can't create a second ISA bus"); return NULL; } if (!dev) { - dev = qdev_new("isabus-bridge"); - sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); + bridge = qdev_new("isabus-bridge"); + dev = bridge; } isabus = ISA_BUS(qbus_new(TYPE_ISA_BUS, dev, NULL)); isabus->address_space = address_space; isabus->address_space_io = address_space_io; + + if (bridge) { + sysbus_realize_and_unref(SYS_BUS_DEVICE(bridge), &error_fatal); + } + return isabus; } |