All In the structure of pci_bus. There is number, primary, secondary and subordinate. primary and subordinate are easy to understand, while the number and secondary confused me. I think secondary means the current bus number. Then what number stands for? In pci_alloc_child_bus(), child->number = child->secondary = busnr; So they are the same? Then we need two different field? I search the git log while find these code is imported as the first commit. So I don't see the history. -- Richard Yang Help you, Help me -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
