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78 struct pci_bus *bus_a = i915->bus, *bus_b = hdac->bus; in connectivity_check() local81 if (bus_a == bus_b) in connectivity_check()84 bus_a = bus_a->parent; in connectivity_check()88 if (bus_a == bus_b) in connectivity_check()91 if (!bus_a || !bus_b) in connectivity_check()98 bus_a = bus_a->parent; in connectivity_check()100 if (bus_a && bus_a == bus_b) in connectivity_check()