diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index fa36094..d00168b 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -46,7 +46,13 @@
 #else
 #define pci_msi_quirk 0
 #endif
+
+#ifdef CONFIG_PCI_MSI
 void disable_msi_mode(struct pci_dev *dev, int pos, int type);
+#else
+static inline void disable_msi_mode(struct pci_dev *dev, int pos, int type) { }
+#endif
+
 extern int pcie_mch_quirk;
 extern struct device_attribute pci_dev_attrs[];
 extern struct class_device_attribute class_device_attr_cpuaffinity;