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The Cadence driver previously defined its own message routing enums (e.g., MSG_ROUTING_LOCAL) and message codes, which duplicated existing PCI core macros (PCIE_MSG_TYPE_R_LOCAL, PCIE_MSG_CODE_ASSERT_INTA, etc.) in drivers/pci/pci.h. These core definitions align with the PCIe r6.0 spec. Remove the driver-specific enums and switch to the centralized PCI core macros. This eliminates redundancy, ensures consistency, and simplifies future updates. No functional changes are introduced. Signed-off-by: Hans Zhang <18255117159@163.com> Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://patch.msgid.link/20250607154913.805027-2-18255117159@163.com