diff --git a/drivers/pci/pcie/portdrv.c b/drivers/pci/pcie/portdrv.c
index 0b4a1f9c2a6b..ae8da5b2e922 100644
--- a/drivers/pci/pcie/portdrv.c
+++ b/drivers/pci/pcie/portdrv.c
@@ -21,6 +21,15 @@
 #include "../pci.h"
 #include "portdrv.h"
 
+/*
+ * The PCIe Capability Interrupt Message Number (PCIe r3.1, sec 7.8.2) must
+ * be one of the first 32 MSI-X entries.  Per PCI r3.0, sec 6.8.3.1, MSI
+ * supports a maximum of 32 vectors per function.
+ */
+#define PCIE_PORT_MAX_MSI_ENTRIES	32
+
+#define get_descriptor_id(type, service) (((type - 4) << 8) | service)
+
 struct portdrv_service_data {
 	struct pcie_port_service_driver *drv;
 	struct device *dev;
diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h
index bf380bcea6a5..58a2b1a1cae4 100644
--- a/drivers/pci/pcie/portdrv.h
+++ b/drivers/pci/pcie/portdrv.h
@@ -98,15 +98,6 @@ struct pcie_port_service_driver {
 int pcie_port_service_register(struct pcie_port_service_driver *new);
 void pcie_port_service_unregister(struct pcie_port_service_driver *new);
 
-/*
- * The PCIe Capability Interrupt Message Number (PCIe r3.1, sec 7.8.2) must
- * be one of the first 32 MSI-X entries.  Per PCI r3.0, sec 6.8.3.1, MSI
- * supports a maximum of 32 vectors per function.
- */
-#define PCIE_PORT_MAX_MSI_ENTRIES	32
-
-#define get_descriptor_id(type, service) (((type - 4) << 8) | service)
-
 extern struct bus_type pcie_port_bus_type;
 
 struct pci_dev;