+#ifdef CONFIG_PCI_LOCKLESS_CONFIG
+# define pci_lock_config(f) do { (void)(f); } while (0)
+# define pci_unlock_config(f) do { (void)(f); } while (0)
+#else
+# define pci_lock_config(f) raw_spin_lock_irqsave(&pci_lock, f)
+# define pci_unlock_config(f) raw_spin_unlock_irqrestore(&pci_lock, f)
+#endif
+