PCI: use pci_is_root_bus() in acpi_pci_get_bridge_handle()
Use pci_is_root_bus() in acpi_pci_get_bridge_handle() to check if the pci bus is root, for code consistency. Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Reviewed-by: Alex Chiang <achiang@hp.com> Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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