>> +void pci_stop_and_remove_bus(struct pci_bus *bus)
>> +{
>> + struct pci_host_bridge *host_bridge = NULL;
>> + struct pci_dev *pci_bridge = NULL;
>> +
>> + pci_stop_bus_devices(bus);
>> +
>> + if (pci_is_root_bus(bus)) {
>> + host_bridge = to_pci_host_bridge(bus->bridge);
>> + pci_stop_host_bridge(host_bridge);
>> + } else
>> + pci_bridge = bus->self;
>> +
>> + __pci_remove_bus_devices(bus);
>> +
>> + pci_remove_bus(bus);
>> +
> It seems that the bus and host_bridge structures may have already been freed here,
> so should not access host_bridge structure any more.
>> + if (host_bridge)
>> + host_bridge->bus = NULL;
>> +
not really.
Yinghai
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