diff --git a/drivers/acpi/sleep/Makefile b/drivers/acpi/sleep/Makefile
index ba9bd403d44..f1fb888c2d2 100644
--- a/drivers/acpi/sleep/Makefile
+++ b/drivers/acpi/sleep/Makefile
@@ -1,5 +1,5 @@
 obj-y					:= wakeup.o
-obj-$(CONFIG_ACPI_SLEEP)		+= main.o
+obj-y					+= main.o
 obj-$(CONFIG_ACPI_SLEEP)		+= proc.o
 
 EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index 85633c585aa..2cbb9aabd00 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -24,7 +24,30 @@
 
 u8 sleep_states[ACPI_S_STATE_COUNT];
 
+#ifdef CONFIG_PM_SLEEP
 static u32 acpi_target_sleep_state = ACPI_STATE_S0;
+#endif
+
+int acpi_sleep_prepare(u32 acpi_state)
+{
+#ifdef CONFIG_ACPI_SLEEP
+	/* do we have a wakeup address for S2 and S3? */
+	if (acpi_state == ACPI_STATE_S3) {
+		if (!acpi_wakeup_address) {
+			return -EFAULT;
+		}
+		acpi_set_firmware_waking_vector((acpi_physical_address)
+						virt_to_phys((void *)
+							     acpi_wakeup_address));
+
+	}
+	ACPI_FLUSH_CPU_CACHE();
+	acpi_enable_wakeup_device_prep(acpi_state);
+#endif
+	acpi_gpe_sleep_prepare(acpi_state);
+	acpi_enter_sleep_state_prep(acpi_state);
+	return 0;
+}
 
 #ifdef CONFIG_SUSPEND
 static struct pm_ops acpi_pm_ops;
@@ -60,27 +83,6 @@ static int acpi_pm_set_target(suspend_state_t pm_state)
 	return error;
 }
 
-int acpi_sleep_prepare(u32 acpi_state)
-{
-#ifdef CONFIG_ACPI_SLEEP
-	/* do we have a wakeup address for S2 and S3? */
-	if (acpi_state == ACPI_STATE_S3) {
-		if (!acpi_wakeup_address) {
-			return -EFAULT;
-		}
-		acpi_set_firmware_waking_vector((acpi_physical_address)
-						virt_to_phys((void *)
-							     acpi_wakeup_address));
-
-	}
-	ACPI_FLUSH_CPU_CACHE();
-	acpi_enable_wakeup_device_prep(acpi_state);
-#endif
-	acpi_gpe_sleep_prepare(acpi_state);
-	acpi_enter_sleep_state_prep(acpi_state);
-	return 0;
-}
-
 /**
  *	acpi_pm_prepare - Do preliminary suspend work.
  *	@pm_state: ignored
@@ -299,6 +301,7 @@ int acpi_suspend(u32 acpi_state)
 	return -EINVAL;
 }
 
+#ifdef CONFIG_PM_SLEEP
 /**
  *	acpi_pm_device_sleep_state - return preferred power state of ACPI device
  *		in the system sleep state given by %acpi_target_sleep_state
@@ -373,6 +376,7 @@ int acpi_pm_device_sleep_state(struct device *dev, int wake, int *d_min_p)
 		*d_min_p = d_min;
 	return d_max;
 }
+#endif
 
 static void acpi_power_off_prepare(void)
 {
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 7ecffc9c738..fd51554ab08 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -943,14 +943,14 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
 			printk(KERN_DEBUG "%s: 0x%lx is busy\n",
 				__FUNCTION__, hdp->hd_phys_address);
 			iounmap(hdp->hd_address);
-			return -EBUSY;
+			return AE_ALREADY_EXISTS;
 		}
 	} else if (res->type == ACPI_RESOURCE_TYPE_FIXED_MEMORY32) {
 		struct acpi_resource_fixed_memory32 *fixmem32;
 
 		fixmem32 = &res->data.fixed_memory32;
 		if (!fixmem32)
-			return -EINVAL;
+			return AE_NO_MEMORY;
 
 		hdp->hd_phys_address = fixmem32->address;
 		hdp->hd_address = ioremap(fixmem32->address,
@@ -960,7 +960,7 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
 			printk(KERN_DEBUG "%s: 0x%lx is busy\n",
 				__FUNCTION__, hdp->hd_phys_address);
 			iounmap(hdp->hd_address);
-			return -EBUSY;
+			return AE_ALREADY_EXISTS;
 		}
 	} else if (res->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
 		struct acpi_resource_extended_irq *irqp;
diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h
index 202acb9ff4d..f85f77a538a 100644
--- a/include/acpi/acpi_drivers.h
+++ b/include/acpi/acpi_drivers.h
@@ -147,10 +147,6 @@ static inline void unregister_hotplug_dock_device(acpi_handle handle)
 /*--------------------------------------------------------------------------
                                   Suspend/Resume
   -------------------------------------------------------------------------- */
-#ifdef CONFIG_ACPI_SLEEP
 extern int acpi_sleep_init(void);
-#else
-static inline int acpi_sleep_init(void) { return 0; }
-#endif
 
 #endif /*__ACPI_DRIVERS_H__*/