diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index b130ea0d075..61675e21fba 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -32,10 +32,8 @@ ifdef CONFIG_CPU_FREQ
 processor-objs	+= processor_perflib.o
 endif
 
-obj-y				+= bus.o glue.o
-obj-y				+= scan.o
-# Keep EC driver first. Initialization of others depend on it.
-obj-y				+= ec.o
+obj-y				+= bus.o glue.o scan.o ec.o \
+					power.o system.o event.o
 obj-$(CONFIG_ACPI_AC) 		+= ac.o
 obj-$(CONFIG_ACPI_BATTERY)	+= battery.o
 obj-$(CONFIG_ACPI_BUTTON)	+= button.o
@@ -51,8 +49,6 @@ obj-$(CONFIG_ACPI_PCI_SLOT)	+= pci_slot.o
 obj-$(CONFIG_ACPI_PROCESSOR)	+= processor.o
 obj-$(CONFIG_ACPI_CONTAINER)	+= container.o
 obj-$(CONFIG_ACPI_THERMAL)	+= thermal.o
-obj-y				+= power.o
-obj-y				+= system.o event.o
 obj-$(CONFIG_ACPI_DEBUG)	+= debug.o
 obj-$(CONFIG_ACPI_NUMA)		+= numa.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)	+= acpi_memhotplug.o
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index bee64b73c91..e8f7b64e92d 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -39,6 +39,8 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
+#include "internal.h"
+
 #define _COMPONENT		ACPI_BUS_COMPONENT
 ACPI_MODULE_NAME("bus");
 
@@ -846,6 +848,7 @@ static int __init acpi_init(void)
 		acpi_kobj = NULL;
 	}
 
+	init_acpi_device_notify();
 	result = acpi_bus_init();
 
 	if (!result) {
@@ -860,11 +863,23 @@ static int __init acpi_init(void)
 		}
 	} else
 		disable_acpi();
+
+	if (acpi_disabled)
+		return result;
+
 	/*
 	 * If the laptop falls into the DMI check table, the power state check
 	 * will be disabled in the course of device power transistion.
 	 */
 	dmi_check_system(power_nocheck_dmi_table);
+
+	acpi_scan_init();
+	acpi_ec_init();
+	acpi_power_init();
+	acpi_system_init();
+	acpi_debug_init();
+	acpi_sleep_proc_init();
+	acpi_wakeup_device_init();
 	return result;
 }
 
diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c
index 20223cbd0d1..9cb189f3c77 100644
--- a/drivers/acpi/debug.c
+++ b/drivers/acpi/debug.c
@@ -297,17 +297,15 @@ acpi_system_write_debug(struct file *file,
 
 	return count;
 }
+#endif
 
-static int __init acpi_debug_init(void)
+int __init acpi_debug_init(void)
 {
+#ifdef CONFIG_ACPI_PROCFS
 	struct proc_dir_entry *entry;
 	int error = 0;
 	char *name;
 
-
-	if (acpi_disabled)
-		return 0;
-
 	/* 'debug_layer' [R/W] */
 	name = ACPI_SYSTEM_FILE_DEBUG_LAYER;
 	entry =
@@ -338,7 +336,7 @@ static int __init acpi_debug_init(void)
 	remove_proc_entry(ACPI_SYSTEM_FILE_DEBUG_LAYER, acpi_root_dir);
 	error = -ENODEV;
 	goto Done;
-}
-
-subsys_initcall(acpi_debug_init);
+#else
+	return 0;
 #endif
+}
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 2fe15060dcd..bf88f180380 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -1069,13 +1069,10 @@ static struct acpi_driver acpi_ec_driver = {
 		},
 };
 
-static int __init acpi_ec_init(void)
+int __init acpi_ec_init(void)
 {
 	int result = 0;
 
-	if (acpi_disabled)
-		return 0;
-
 	acpi_ec_dir = proc_mkdir(ACPI_EC_CLASS, acpi_root_dir);
 	if (!acpi_ec_dir)
 		return -ENODEV;
@@ -1090,8 +1087,6 @@ static int __init acpi_ec_init(void)
 	return result;
 }
 
-subsys_initcall(acpi_ec_init);
-
 /* EC driver currently not unloadable */
 #if 0
 static void __exit acpi_ec_exit(void)
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 5479b9f4251..8bd2c2a6884 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -286,10 +286,8 @@ static int acpi_platform_notify_remove(struct device *dev)
 	return 0;
 }
 
-static int __init init_acpi_device_notify(void)
+int __init init_acpi_device_notify(void)
 {
-	if (acpi_disabled)
-		return 0;
 	if (platform_notify || platform_notify_remove) {
 		printk(KERN_ERR PREFIX "Can't use platform_notify\n");
 		return 0;
@@ -298,5 +296,3 @@ static int __init init_acpi_device_notify(void)
 	platform_notify_remove = acpi_platform_notify_remove;
 	return 0;
 }
-
-arch_initcall(init_acpi_device_notify);
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
new file mode 100644
index 00000000000..11a69b53004
--- /dev/null
+++ b/drivers/acpi/internal.h
@@ -0,0 +1,43 @@
+/* For use by Linux/ACPI infrastructure, not drivers */
+
+int init_acpi_device_notify(void);
+int acpi_scan_init(void);
+int acpi_system_init(void);
+
+#ifdef CONFIG_ACPI_DEBUG
+int acpi_debug_init(void);
+#else
+static inline int acpi_debug_init(void) { return 0; }
+#endif
+
+/* --------------------------------------------------------------------------
+                                  Power Resource
+   -------------------------------------------------------------------------- */
+int acpi_power_init(void);
+int acpi_device_sleep_wake(struct acpi_device *dev,
+                           int enable, int sleep_state, int dev_state);
+int acpi_enable_wakeup_device_power(struct acpi_device *dev, int sleep_state);
+int acpi_disable_wakeup_device_power(struct acpi_device *dev);
+int acpi_power_get_inferred_state(struct acpi_device *device);
+int acpi_power_transition(struct acpi_device *device, int state);
+extern int acpi_power_nocheck;
+
+int acpi_wakeup_device_init(void);
+
+/* --------------------------------------------------------------------------
+                                  Embedded Controller
+   -------------------------------------------------------------------------- */
+int acpi_ec_init(void);
+int acpi_ec_ecdt_probe(void);
+int acpi_boot_ec_enable(void);
+
+/*--------------------------------------------------------------------------
+                                  Suspend/Resume
+  -------------------------------------------------------------------------- */
+extern int acpi_sleep_init(void);
+
+#ifdef CONFIG_ACPI_SLEEP
+int acpi_sleep_proc_init(void);
+#else
+static inline int acpi_sleep_proc_init(void) { return 0; }
+#endif
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index c926e7d4a0d..11968ba28fe 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -773,14 +773,10 @@ static int acpi_power_resume(struct acpi_device *device)
 	return 0;
 }
 
-static int __init acpi_power_init(void)
+int __init acpi_power_init(void)
 {
 	int result = 0;
 
-
-	if (acpi_disabled)
-		return 0;
-
 	INIT_LIST_HEAD(&acpi_power_resource_list);
 
 	acpi_power_dir = proc_mkdir(ACPI_POWER_CLASS, acpi_root_dir);
@@ -795,5 +791,3 @@ static int __init acpi_power_init(void)
 
 	return 0;
 }
-
-subsys_initcall(acpi_power_init);
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index 428c911dba0..05dfdc96802 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -496,11 +496,8 @@ static u32 rtc_handler(void *context)
 }
 #endif				/* HAVE_ACPI_LEGACY_ALARM */
 
-static int __init acpi_sleep_proc_init(void)
+int __init acpi_sleep_proc_init(void)
 {
-	if (acpi_disabled)
-		return 0;
-
 #ifdef	CONFIG_ACPI_PROCFS
 	/* 'sleep' [R/W] */
 	proc_create("sleep", S_IFREG | S_IRUGO | S_IWUSR,
@@ -527,5 +524,3 @@ static int __init acpi_sleep_proc_init(void)
 
 	return 0;
 }
-
-late_initcall(acpi_sleep_proc_init);
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index c54d7b6c406..c548231965e 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -11,6 +11,8 @@
 
 #include <acpi/acpi_drivers.h>
 
+#include "internal.h"
+
 #define _COMPONENT		ACPI_BUS_COMPONENT
 ACPI_MODULE_NAME("scan");
 #define STRUCT_TO_INT(s)	(*((int*)&s))
@@ -1524,16 +1526,11 @@ static int acpi_bus_scan_fixed(struct acpi_device *root)
 	return result;
 }
 
-
-static int __init acpi_scan_init(void)
+int __init acpi_scan_init(void)
 {
 	int result;
 	struct acpi_bus_ops ops;
 
-
-	if (acpi_disabled)
-		return 0;
-
 	memset(&ops, 0, sizeof(ops));
 	ops.acpi_op_add = 1;
 	ops.acpi_op_start = 1;
@@ -1566,5 +1563,3 @@ static int __init acpi_scan_init(void)
       Done:
 	return result;
 }
-
-subsys_initcall(acpi_scan_init);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 837ac7d5801..91a284b54db 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -21,6 +21,8 @@
 
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
+
+#include "internal.h"
 #include "sleep.h"
 
 u8 sleep_states[ACPI_S_STATE_COUNT];
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 391d0358a59..3b88981dd21 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -571,12 +571,9 @@ static int acpi_system_procfs_init(void)
 }
 #endif
 
-static int __init acpi_system_init(void)
+int __init acpi_system_init(void)
 {
-	int result = 0;
-
-	if (acpi_disabled)
-		return 0;
+	int result;
 
 	result = acpi_system_procfs_init();
 	if (result)
@@ -586,5 +583,3 @@ static int __init acpi_system_init(void)
 
 	return result;
 }
-
-subsys_initcall(acpi_system_init);
diff --git a/drivers/acpi/wakeup.c b/drivers/acpi/wakeup.c
index 2d34806d45d..5aee8c26cc9 100644
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -8,6 +8,8 @@
 #include <acpi/acpi_drivers.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
+
+#include "internal.h"
 #include "sleep.h"
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
@@ -136,13 +138,10 @@ void acpi_disable_wakeup_device(u8 sleep_state)
 	spin_unlock(&acpi_device_lock);
 }
 
-static int __init acpi_wakeup_device_init(void)
+int __init acpi_wakeup_device_init(void)
 {
 	struct list_head *node, *next;
 
-	if (acpi_disabled)
-		return 0;
-
 	spin_lock(&acpi_device_lock);
 	list_for_each_safe(node, next, &acpi_wakeup_device_list) {
 		struct acpi_device *dev = container_of(node,
@@ -163,5 +162,3 @@ static int __init acpi_wakeup_device_init(void)
 	spin_unlock(&acpi_device_lock);
 	return 0;
 }
-
-late_initcall(acpi_wakeup_device_init);
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index 5fc1bb0f4a9..241d227de6c 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -98,24 +98,6 @@ int acpi_pci_bind_root(struct acpi_device *device, struct acpi_pci_id *id,
 struct pci_bus *pci_acpi_scan_root(struct acpi_device *device, int domain,
 				   int bus);
 
-/* --------------------------------------------------------------------------
-                                  Power Resource
-   -------------------------------------------------------------------------- */
-
-int acpi_device_sleep_wake(struct acpi_device *dev,
-                           int enable, int sleep_state, int dev_state);
-int acpi_enable_wakeup_device_power(struct acpi_device *dev, int sleep_state);
-int acpi_disable_wakeup_device_power(struct acpi_device *dev);
-int acpi_power_get_inferred_state(struct acpi_device *device);
-int acpi_power_transition(struct acpi_device *device, int state);
-extern int acpi_power_nocheck;
-
-/* --------------------------------------------------------------------------
-                                  Embedded Controller
-   -------------------------------------------------------------------------- */
-int acpi_ec_ecdt_probe(void);
-int acpi_boot_ec_enable(void);
-
 /* --------------------------------------------------------------------------
                                     Processor
    -------------------------------------------------------------------------- */
@@ -165,9 +147,4 @@ static inline void unregister_hotplug_dock_device(acpi_handle handle)
 }
 #endif
 
-/*--------------------------------------------------------------------------
-                                  Suspend/Resume
-  -------------------------------------------------------------------------- */
-extern int acpi_sleep_init(void);
-
 #endif /*__ACPI_DRIVERS_H__*/