static void *build_pci_bus_begin(PCIBus *bus, void *parent_state) { AcpiBuildPciBusHotplugState *parent = parent_state; AcpiBuildPciBusHotplugState *child = g_malloc(sizeof *child); build_pci_bus_state_init(child, parent, parent->pcihp_bridge_en); return child; }