diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h
index 31a633f..abefcc3 100644
--- a/drivers/pnp/base.h
+++ b/drivers/pnp/base.h
@@ -1,5 +1,6 @@
 extern spinlock_t pnp_lock;
 void *pnp_alloc(long size);
+int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev);
 int pnp_interface_attach_device(struct pnp_dev *dev);
 void pnp_fixup_device(struct pnp_dev *dev);
 void pnp_free_option(struct pnp_option *option);
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 53f9106..4807d76 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -25,6 +25,7 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/actypes.h>
 
+#include "../base.h"
 #include "pnpacpi.h"
 
 static int num = 0;
diff --git a/drivers/pnp/pnpbios/core.c b/drivers/pnp/pnpbios/core.c
index a8a5150..2a5353b 100644
--- a/drivers/pnp/pnpbios/core.c
+++ b/drivers/pnp/pnpbios/core.c
@@ -69,6 +69,7 @@
 #include <asm/system.h>
 #include <asm/byteorder.h>
 
+#include "../base.h"
 #include "pnpbios.h"
 
 /*
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index b2f05c2..9a05ab5 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -403,7 +403,6 @@
 /* protocol helpers */
 int pnp_is_active(struct pnp_dev *dev);
 int compare_pnp_id(struct pnp_id *pos, const char *id);
-int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev);
 int pnp_register_driver(struct pnp_driver *drv);
 void pnp_unregister_driver(struct pnp_driver *drv);
 
@@ -450,7 +449,6 @@
 /* protocol helpers */
 static inline int pnp_is_active(struct pnp_dev *dev) { return 0; }
 static inline int compare_pnp_id(struct pnp_id *pos, const char *id) { return -ENODEV; }
-static inline int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev) { return -ENODEV; }
 static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
 static inline void pnp_unregister_driver(struct pnp_driver *drv) { }