PCIE_BUS_PEER2PEER 248 arch/arm/mach-cns3xxx/pcie.c pcie_bus_config = PCIE_BUS_PEER2PEER; PCIE_BUS_PEER2PEER 6465 drivers/pci/pci.c pcie_bus_config = PCIE_BUS_PEER2PEER; PCIE_BUS_PEER2PEER 2699 drivers/pci/probe.c if (pcie_bus_config == PCIE_BUS_PEER2PEER)