Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (72 commits)
  asus-laptop: remove EXPERIMENTAL dependency
  asus-laptop: use pr_fmt and pr_<level>
  eeepc-laptop: cpufv updates
  eeepc-laptop: sync eeepc-laptop with asus_acpi
  asus_acpi: Deprecate in favor of asus-laptop
  acpi4asus: update MAINTAINER and KConfig links
  asus-laptop: platform dev as parent for led and backlight
  eeepc-laptop: enable camera by default
  ACPI: Rename ACPI processor device bus ID
  acerhdf: Acer Aspire One fan control
  ACPI: video: DMI workaround broken Acer 7720 BIOS enabling display brightness
  ACPI: run ACPI device hot removal in kacpi_hotplug_wq
  ACPI: Add the reference count to avoid unloading ACPI video bus twice
  ACPI: DMI to disable Vista compatibility on some Sony laptops
  ACPI: fix a deadlock in hotplug case
  Show the physical device node of backlight class device.
  ACPI: pdc init related memory leak with physical CPU hotplug
  ACPI: pci_root: remove unused dev/fn information
  ACPI: pci_root: simplify list traversals
  ACPI: pci_root: use driver data rather than list lookup
  ...

28 files changed, 1755 insertions, 930 deletions

diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 88e42abf5d88..0df8fcb687d6 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -61,6 +61,7 @@ static int acpi_ac_open_fs(struct inode *inode, struct file *file);
 static int acpi_ac_add(struct acpi_device *device);
 static int acpi_ac_remove(struct acpi_device *device, int type);
 static int acpi_ac_resume(struct acpi_device *device);
+static void acpi_ac_notify(struct acpi_device *device, u32 event);
 
 static const struct acpi_device_id ac_device_ids[] = {
 	{"ACPI0003", 0},
@@ -72,10 +73,12 @@ static struct acpi_driver acpi_ac_driver = {
 	.name = "ac",
 	.class = ACPI_AC_CLASS,
 	.ids = ac_device_ids,
+	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = acpi_ac_add,
 		.remove = acpi_ac_remove,
 		.resume = acpi_ac_resume,
+		.notify = acpi_ac_notify,
 		},
 };
 
@@ -220,16 +223,14 @@ static int acpi_ac_remove_fs(struct acpi_device *device)
                                    Driver Model
    -------------------------------------------------------------------------- */
 
-static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_ac_notify(struct acpi_device *device, u32 event)
 {
-	struct acpi_ac *ac = data;
-	struct acpi_device *device = NULL;
+	struct acpi_ac *ac = acpi_driver_data(device);
 
 
 	if (!ac)
 		return;
 
-	device = ac->device;
 	switch (event) {
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -253,7 +254,6 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
 static int acpi_ac_add(struct acpi_device *device)
 {
 	int result = 0;
-	acpi_status status = AE_OK;
 	struct acpi_ac *ac = NULL;
 
 
@@ -286,13 +286,6 @@ static int acpi_ac_add(struct acpi_device *device)
 	ac->charger.get_property = get_ac_property;
 	power_supply_register(&ac->device->dev, &ac->charger);
 #endif
-	status = acpi_install_notify_handler(device->handle,
-					     ACPI_ALL_NOTIFY, acpi_ac_notify,
-					     ac);
-	if (ACPI_FAILURE(status)) {
-		result = -ENODEV;
-		goto end;
-	}
 
 	printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
 	       acpi_device_name(device), acpi_device_bid(device),
@@ -328,7 +321,6 @@ static int acpi_ac_resume(struct acpi_device *device)
 
 static int acpi_ac_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = AE_OK;
 	struct acpi_ac *ac = NULL;
 
 
@@ -337,8 +329,6 @@ static int acpi_ac_remove(struct acpi_device *device, int type)
 
 	ac = acpi_driver_data(device);
 
-	status = acpi_remove_notify_handler(device->handle,
-					    ACPI_ALL_NOTIFY, acpi_ac_notify);
 #ifdef CONFIG_ACPI_SYSFS_POWER
 	if (ac->charger.dev)
 		power_supply_unregister(&ac->charger);
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index b0de6312919a..58b4517ce712 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -796,13 +796,12 @@ static void acpi_battery_remove_fs(struct acpi_device *device)
                                  Driver Interface
    -------------------------------------------------------------------------- */
 
-static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
+static void acpi_battery_notify(struct acpi_device *device, u32 event)
 {
-	struct acpi_battery *battery = data;
-	struct acpi_device *device;
+	struct acpi_battery *battery = acpi_driver_data(device);
+
 	if (!battery)
 		return;
-	device = battery->device;
 	acpi_battery_update(battery);
 	acpi_bus_generate_proc_event(device, event,
 				     acpi_battery_present(battery));
@@ -819,7 +818,6 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
 static int acpi_battery_add(struct acpi_device *device)
 {
 	int result = 0;
-	acpi_status status = 0;
 	struct acpi_battery *battery = NULL;
 	if (!device)
 		return -EINVAL;
@@ -834,22 +832,12 @@ static int acpi_battery_add(struct acpi_device *device)
 	acpi_battery_update(battery);
 #ifdef CONFIG_ACPI_PROCFS_POWER
 	result = acpi_battery_add_fs(device);
-	if (result)
-		goto end;
 #endif
-	status = acpi_install_notify_handler(device->handle,
-					     ACPI_ALL_NOTIFY,
-					     acpi_battery_notify, battery);
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler"));
-		result = -ENODEV;
-		goto end;
-	}
-	printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
-	       ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
-	       device->status.battery_present ? "present" : "absent");
-      end:
-	if (result) {
+	if (!result) {
+		printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n",
+			ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device),
+			device->status.battery_present ? "present" : "absent");
+	} else {
 #ifdef CONFIG_ACPI_PROCFS_POWER
 		acpi_battery_remove_fs(device);
 #endif
@@ -860,15 +848,11 @@ static int acpi_battery_add(struct acpi_device *device)
 
 static int acpi_battery_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = 0;
 	struct acpi_battery *battery = NULL;
 
 	if (!device || !acpi_driver_data(device))
 		return -EINVAL;
 	battery = acpi_driver_data(device);
-	status = acpi_remove_notify_handler(device->handle,
-					    ACPI_ALL_NOTIFY,
-					    acpi_battery_notify);
 #ifdef CONFIG_ACPI_PROCFS_POWER
 	acpi_battery_remove_fs(device);
 #endif
@@ -896,10 +880,12 @@ static struct acpi_driver acpi_battery_driver = {
 	.name = "battery",
 	.class = ACPI_BATTERY_CLASS,
 	.ids = battery_device_ids,
+	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = acpi_battery_add,
 		.resume = acpi_battery_resume,
 		.remove = acpi_battery_remove,
+		.notify = acpi_battery_notify,
 		},
 };
 
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 09c69806c1fc..f6baa77deefb 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -192,6 +192,22 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 		     DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"),
 		},
 	},
+	{
+	.callback = dmi_disable_osi_vista,
+	.ident = "Sony VGN-NS10J_S",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"),
+		},
+	},
+	{
+	.callback = dmi_disable_osi_vista,
+	.ident = "Sony VGN-SR290J",
+	.matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"),
+		},
+	},
 
 	/*
 	 * BIOS invocation of _OSI(Linux) is almost always a BIOS bug.
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index ae862f1798dc..2876fc70c3a9 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -450,18 +450,16 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
                              Notification Handling
    -------------------------------------------------------------------------- */
 
-static int
-acpi_bus_check_device(struct acpi_device *device, int *status_changed)
+static void acpi_bus_check_device(acpi_handle handle)
 {
-	acpi_status status = 0;
+	struct acpi_device *device;
+	acpi_status status;
 	struct acpi_device_status old_status;
 
-
+	if (acpi_bus_get_device(handle, &device))
+		return;
 	if (!device)
-		return -EINVAL;
-
-	if (status_changed)
-		*status_changed = 0;
+		return;
 
 	old_status = device->status;
 
@@ -471,22 +469,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
 	 */
 	if (device->parent && !device->parent->status.present) {
 		device->status = device->parent->status;
-		if (STRUCT_TO_INT(old_status) != STRUCT_TO_INT(device->status)) {
-			if (status_changed)
-				*status_changed = 1;
-		}
-		return 0;
+		return;
 	}
 
 	status = acpi_bus_get_status(device);
 	if (ACPI_FAILURE(status))
-		return -ENODEV;
+		return;
 
 	if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status))
-		return 0;
-
-	if (status_changed)
-		*status_changed = 1;
+		return;
 
 	/*
 	 * Device Insertion/Removal
@@ -498,33 +489,17 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed)
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n"));
 		/* TBD: Handle device removal */
 	}
-
-	return 0;
 }
 
-static int acpi_bus_check_scope(struct acpi_device *device)
+static void acpi_bus_check_scope(acpi_handle handle)
 {
-	int result = 0;
-	int status_changed = 0;
-
-
-	if (!device)
-		return -EINVAL;
-
 	/* Status Change? */
-	result = acpi_bus_check_device(device, &status_changed);
-	if (result)
-		return result;
-
-	if (!status_changed)
-		return 0;
+	acpi_bus_check_device(handle);
 
 	/*
 	 * TBD: Enumerate child devices within this device's scope and
 	 *       run acpi_bus_check_device()'s on them.
 	 */
-
-	return 0;
 }
 
 static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list);
@@ -547,22 +522,19 @@ EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier);
  */
 static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 {
-	int result = 0;
 	struct acpi_device *device = NULL;
+	struct acpi_driver *driver;
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n",
+			  type, handle));
 
 	blocking_notifier_call_chain(&acpi_bus_notify_list,
 		type, (void *)handle);
 
-	if (acpi_bus_get_device(handle, &device))
-		return;
-
 	switch (type) {
 
 	case ACPI_NOTIFY_BUS_CHECK:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received BUS CHECK notification for device [%s]\n",
-				  device->pnp.bus_id));
-		result = acpi_bus_check_scope(device);
+		acpi_bus_check_scope(handle);
 		/*
 		 * TBD: We'll need to outsource certain events to non-ACPI
 		 *      drivers via the device manager (device.c).
@@ -570,10 +542,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 		break;
 
 	case ACPI_NOTIFY_DEVICE_CHECK:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received DEVICE CHECK notification for device [%s]\n",
-				  device->pnp.bus_id));
-		result = acpi_bus_check_device(device, NULL);
+		acpi_bus_check_device(handle);
 		/*
 		 * TBD: We'll need to outsource certain events to non-ACPI
 		 *      drivers via the device manager (device.c).
@@ -581,44 +550,26 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 		break;
 
 	case ACPI_NOTIFY_DEVICE_WAKE:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received DEVICE WAKE notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
 	case ACPI_NOTIFY_EJECT_REQUEST:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received EJECT REQUEST notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
 	case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received DEVICE CHECK LIGHT notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD: Exactly what does 'light' mean? */
 		break;
 
 	case ACPI_NOTIFY_FREQUENCY_MISMATCH:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received FREQUENCY MISMATCH notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
 	case ACPI_NOTIFY_BUS_MODE_MISMATCH:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received BUS MODE MISMATCH notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
 	case ACPI_NOTIFY_POWER_FAULT:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Received POWER FAULT notification for device [%s]\n",
-				  device->pnp.bus_id));
 		/* TBD */
 		break;
 
@@ -629,7 +580,13 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
 		break;
 	}
 
-	return;
+	acpi_bus_get_device(handle, &device);
+	if (device) {
+		driver = device->driver;
+		if (driver && driver->ops.notify &&
+		    (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
+			driver->ops.notify(device, type);
+	}
 }
 
 /* --------------------------------------------------------------------------
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 8bd2c2a6884d..a8a5c29958c8 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -140,46 +140,6 @@ struct device *acpi_get_physical_device(acpi_handle handle)
 
 EXPORT_SYMBOL(acpi_get_physical_device);
 
-/* ToDo: When a PCI bridge is found, return the PCI device behind the bridge
- *       This should work in general, but did not on a Lenovo T61 for the
- *	 graphics card. But this must be fixed when the PCI device is
- *       bound and the kernel device struct is attached to the acpi device
- * Note: A success call will increase reference count by one
- *       Do call put_device(dev) on the returned device then
- */
-struct device *acpi_get_physical_pci_device(acpi_handle handle)
-{
-	struct device *dev;
-	long long device_id;
-	acpi_status status;
-
-	status =
-		acpi_evaluate_integer(handle, "_ADR", NULL, &device_id);
-
-	if (ACPI_FAILURE(status))
-		return NULL;
-
-	/* We need to attempt to determine whether the _ADR refers to a
-	   PCI device or not. There's no terribly good way to do this,
-	   so the best we can hope for is to assume that there'll never
-	   be a device in the host bridge */
-	if (device_id >= 0x10000) {
-		/* It looks like a PCI device. Does it exist? */
-		dev = acpi_get_physical_device(handle);
-	} else {
-		/* It doesn't look like a PCI device. Does its parent
-		   exist? */
-		acpi_handle phandle;
-		if (acpi_get_parent(handle, &phandle))
-			return NULL;
-		dev = acpi_get_physical_device(phandle);
-	}
-	if (!dev)
-		return NULL;
-	return dev;
-}
-EXPORT_SYMBOL(acpi_get_physical_pci_device);
-
 static int acpi_bind_one(struct device *dev, acpi_handle handle)
 {
 	struct acpi_device *acpi_dev;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index d916bea729f1..71670719d61a 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -79,6 +79,7 @@ static acpi_osd_handler acpi_irq_handler;
 static void *acpi_irq_context;
 static struct workqueue_struct *kacpid_wq;
 static struct workqueue_struct *kacpi_notify_wq;
+static struct workqueue_struct *kacpi_hotplug_wq;
 
 struct acpi_res_list {
 	resource_size_t start;
@@ -192,8 +193,10 @@ acpi_status acpi_os_initialize1(void)
 {
 	kacpid_wq = create_singlethread_workqueue("kacpid");
 	kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify");
+	kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug");
 	BUG_ON(!kacpid_wq);
 	BUG_ON(!kacpi_notify_wq);
+	BUG_ON(!kacpi_hotplug_wq);
 	return AE_OK;
 }
 
@@ -206,6 +209,7 @@ acpi_status acpi_os_terminate(void)
 
 	destroy_workqueue(kacpid_wq);
 	destroy_workqueue(kacpi_notify_wq);
+	destroy_workqueue(kacpi_hotplug_wq);
 
 	return AE_OK;
 }
@@ -716,6 +720,7 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
 	acpi_status status = AE_OK;
 	struct acpi_os_dpc *dpc;
 	struct workqueue_struct *queue;
+	work_func_t func;
 	int ret;
 	ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
 			  "Scheduling function [%p(%p)] for deferred execution.\n",
@@ -740,15 +745,17 @@ static acpi_status __acpi_os_execute(acpi_execute_type type,
 	dpc->function = function;
 	dpc->context = context;
 
-	if (!hp) {
-		INIT_WORK(&dpc->work, acpi_os_execute_deferred);
-		queue = (type == OSL_NOTIFY_HANDLER) ?
-			kacpi_notify_wq : kacpid_wq;
-		ret = queue_work(queue, &dpc->work);
-	} else {
-		INIT_WORK(&dpc->work, acpi_os_execute_hp_deferred);
-		ret = schedule_work(&dpc->work);
-	}
+	/*
+	 * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq
+	 * because the hotplug code may call driver .remove() functions,
+	 * which invoke flush_scheduled_work/acpi_os_wait_events_complete
+	 * to flush these workqueues.
+	 */
+	queue = hp ? kacpi_hotplug_wq :
+		(type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq);
+	func = hp ? acpi_os_execute_hp_deferred : acpi_os_execute_deferred;
+	INIT_WORK(&dpc->work, func);
+	ret = queue_work(queue, &dpc->work);
 
 	if (!ret) {
 		printk(KERN_ERR PREFIX
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index bc46de3d967f..a5a77b78a723 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -24,12 +24,7 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
 #include <linux/types.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/pm.h>
 #include <linux/pci.h>
 #include <linux/acpi.h>
 #include <acpi/acpi_bus.h>
@@ -38,310 +33,76 @@
 #define _COMPONENT		ACPI_PCI_COMPONENT
 ACPI_MODULE_NAME("pci_bind");
 
-struct acpi_pci_data {
-	struct acpi_pci_id id;
-	struct pci_bus *bus;
-	struct pci_dev *dev;
-};
-
-static int acpi_pci_unbind(struct acpi_device *device);
-
-static void acpi_pci_data_handler(acpi_handle handle, u32 function,
-				  void *context)
-{
-
-	/* TBD: Anything we need to do here? */
-
-	return;
-}
-
-/**
- * acpi_get_pci_id
- * ------------------
- * This function is used by the ACPI Interpreter (a.k.a. Core Subsystem)
- * to resolve PCI information for ACPI-PCI devices defined in the namespace.
- * This typically occurs when resolving PCI operation region information.
- */
-acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id)
+static int acpi_pci_unbind(struct acpi_device *device)
 {
-	int result = 0;
-	acpi_status status = AE_OK;
-	struct acpi_device *device = NULL;
-	struct acpi_pci_data *data = NULL;
-
-
-	if (!id)
-		return AE_BAD_PARAMETER;
-
-	result = acpi_bus_get_device(handle, &device);
-	if (result) {
-		printk(KERN_ERR PREFIX
-			    "Invalid ACPI Bus context for device %s\n",
-			    acpi_device_bid(device));
-		return AE_NOT_EXIST;
-	}
-
-	status = acpi_get_data(handle, acpi_pci_data_handler, (void **)&data);
-	if (ACPI_FAILURE(status) || !data) {
-		ACPI_EXCEPTION((AE_INFO, status,
-				"Invalid ACPI-PCI context for device %s",
-				acpi_device_bid(device)));
-		return status;
-	}
+	struct pci_dev *dev;
 
-	*id = data->id;
+	dev = acpi_get_pci_dev(device->handle);
+	if (!dev || !dev->subordinate)
+		goto out;
 
-	/*
-	   id->segment = data->id.segment;
-	   id->bus = data->id.bus;
-	   id->device = data->id.device;
-	   id->function = data->id.function;
-	 */
+	acpi_pci_irq_del_prt(dev->subordinate);
 
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-			  "Device %s has PCI address %04x:%02x:%02x.%d\n",
-			  acpi_device_bid(device), id->segment, id->bus,
-			  id->device, id->function));
+	device->ops.bind = NULL;
+	device->ops.unbind = NULL;
 
-	return AE_OK;
+out:
+	pci_dev_put(dev);
+	return 0;
 }
 
-EXPORT_SYMBOL(acpi_get_pci_id);
-
-int acpi_pci_bind(struct acpi_device *device)
+static int acpi_pci_bind(struct acpi_device *device)
 {
-	int result = 0;
 	acpi_status status;
-	struct acpi_pci_data *data;
-	struct acpi_pci_data *pdata;
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	acpi_handle handle;
+	struct pci_bus *bus;
+	struct pci_dev *dev;
 
-	if (!device || !device->parent)
-		return -EINVAL;
-
-	data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
-	if (ACPI_FAILURE(status)) {
-		kfree(data);
-		return -ENODEV;
-	}
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI device [%s]...\n",
-			  (char *)buffer.pointer));
-
-	/* 
-	 * Segment & Bus
-	 * -------------
-	 * These are obtained via the parent device's ACPI-PCI context.
-	 */
-	status = acpi_get_data(device->parent->handle, acpi_pci_data_handler,
-			       (void **)&pdata);
-	if (ACPI_FAILURE(status) || !pdata || !pdata->bus) {
-		ACPI_EXCEPTION((AE_INFO, status,
-				"Invalid ACPI-PCI context for parent device %s",
-				acpi_device_bid(device->parent)));
-		result = -ENODEV;
-		goto end;
-	}
-	data->id.segment = pdata->id.segment;
-	data->id.bus = pdata->bus->number;
-
-	/*
-	 * Device & Function
-	 * -----------------
-	 * These are simply obtained from the device's _ADR method.  Note
-	 * that a value of zero is valid.
-	 */
-	data->id.device = device->pnp.bus_address >> 16;
-	data->id.function = device->pnp.bus_address & 0xFFFF;
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "...to %04x:%02x:%02x.%d\n",
-			  data->id.segment, data->id.bus, data->id.device,
-			  data->id.function));
-
-	/*
-	 * TBD: Support slot devices (e.g. function=0xFFFF).
-	 */
-
-	/* 
-	 * Locate PCI Device
-	 * -----------------
-	 * Locate matching device in PCI namespace.  If it doesn't exist
-	 * this typically means that the device isn't currently inserted
-	 * (e.g. docking station, port replicator, etc.).
-	 */
-	data->dev = pci_get_slot(pdata->bus,
-				PCI_DEVFN(data->id.device, data->id.function));
-	if (!data->dev) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Device %04x:%02x:%02x.%d not present in PCI namespace\n",
-				  data->id.segment, data->id.bus,
-				  data->id.device, data->id.function));
-		result = -ENODEV;
-		goto end;
-	}
-	if (!data->dev->bus) {
-		printk(KERN_ERR PREFIX
-			    "Device %04x:%02x:%02x.%d has invalid 'bus' field\n",
-			    data->id.segment, data->id.bus,
-			    data->id.device, data->id.function);
-		result = -ENODEV;
-		goto end;
-	}
+	dev = acpi_get_pci_dev(device->handle);
+	if (!dev)
+		return 0;
 
 	/*
-	 * PCI Bridge?
-	 * -----------
-	 * If so, set the 'bus' field and install the 'bind' function to 
-	 * facilitate callbacks for all of its children.
+	 * Install the 'bind' function to facilitate callbacks for
+	 * children of the P2P bridge.
 	 */
-	if (data->dev->subordinate) {
+	if (dev->subordinate) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "Device %04x:%02x:%02x.%d is a PCI bridge\n",
-				  data->id.segment, data->id.bus,
-				  data->id.device, data->id.function));
-		data->bus = data->dev->subordinate;
+				  pci_domain_nr(dev->bus), dev->bus->number,
+				  PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)));
 		device->ops.bind = acpi_pci_bind;
 		device->ops.unbind = acpi_pci_unbind;
 	}
 
 	/*
-	 * Attach ACPI-PCI Context
-	 * -----------------------
-	 * Thus binding the ACPI and PCI devices.
-	 */
-	status = acpi_attach_data(device->handle, acpi_pci_data_handler, data);
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status,
-				"Unable to attach ACPI-PCI context to device %s",
-				acpi_device_bid(device)));
-		result = -ENODEV;
-		goto end;
-	}
-
-	/*
-	 * PCI Routing Table
-	 * -----------------
-	 * Evaluate and parse _PRT, if exists.  This code is independent of 
-	 * PCI bridges (above) to allow parsing of _PRT objects within the
-	 * scope of non-bridge devices.  Note that _PRTs within the scope of
-	 * a PCI bridge assume the bridge's subordinate bus number.
+	 * Evaluate and parse _PRT, if exists.  This code allows parsing of
+	 * _PRT objects within the scope of non-bridge devices.  Note that
+	 * _PRTs within the scope of a PCI bridge assume the bridge's
+	 * subordinate bus number.
 	 *
 	 * TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
 	 */
 	status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
-	if (ACPI_SUCCESS(status)) {
-		if (data->bus)	/* PCI-PCI bridge */
-			acpi_pci_irq_add_prt(device->handle, data->id.segment,
-					     data->bus->number);
-		else		/* non-bridge PCI device */
-			acpi_pci_irq_add_prt(device->handle, data->id.segment,
-					     data->id.bus);
-	}
-
-      end:
-	kfree(buffer.pointer);
-	if (result) {
-		pci_dev_put(data->dev);
-		kfree(data);
-	}
-	return result;
-}
-
-static int acpi_pci_unbind(struct acpi_device *device)
-{
-	int result = 0;
-	acpi_status status;
-	struct acpi_pci_data *data;
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-
-
-	if (!device || !device->parent)
-		return -EINVAL;
-
-	status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
 	if (ACPI_FAILURE(status))
-		return -ENODEV;
+		goto out;
 
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unbinding PCI device [%s]...\n",
-			  (char *) buffer.pointer));
-	kfree(buffer.pointer);
+	if (dev->subordinate)
+		bus = dev->subordinate;
+	else
+		bus = dev->bus;
 
-	status =
-	    acpi_get_data(device->handle, acpi_pci_data_handler,
-			  (void **)&data);
-	if (ACPI_FAILURE(status)) {
-		result = -ENODEV;
-		goto end;
-	}
+	acpi_pci_irq_add_prt(device->handle, bus);
 
-	status = acpi_detach_data(device->handle, acpi_pci_data_handler);
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status,
-				"Unable to detach data from device %s",
-				acpi_device_bid(device)));
-		result = -ENODEV;
-		goto end;
-	}
-	if (data->dev->subordinate) {
-		acpi_pci_irq_del_prt(data->id.segment, data->bus->number);
-	}
-	pci_dev_put(data->dev);
-	kfree(data);
-
-      end:
-	return result;
+out:
+	pci_dev_put(dev);
+	return 0;
 }
 
-int
-acpi_pci_bind_root(struct acpi_device *device,
-		   struct acpi_pci_id *id, struct pci_bus *bus)
+int acpi_pci_bind_root(struct acpi_device *device)
 {
-	int result = 0;
-	acpi_status status;
-	struct acpi_pci_data *data = NULL;
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-
-	if (!device || !id || !bus) {
-		return -EINVAL;
-	}
-
-	data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	data->id = *id;
-	data->bus = bus;
 	device->ops.bind = acpi_pci_bind;
 	device->ops.unbind = acpi_pci_unbind;
 
-	status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
-	if (ACPI_FAILURE(status)) {
-		kfree (data);
-		return -ENODEV;
-	}
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI root bridge [%s] to "
-			"%04x:%02x\n", (char *)buffer.pointer,
-			id->segment, id->bus));
-
-	status = acpi_attach_data(device->handle, acpi_pci_data_handler, data);
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status,
-				"Unable to attach ACPI-PCI context to device %s",
-				(char *)buffer.pointer));
-		result = -ENODEV;
-		goto end;
-	}
-
-      end:
-	kfree(buffer.pointer);
-	if (result != 0)
-		kfree(data);
-
-	return result;
+	return 0;
 }
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index 2faa9e2ac893..b794eb88ab90 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -182,7 +182,7 @@ static void do_prt_fixups(struct acpi_prt_entry *entry,
 	}
 }
 
-static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
+static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus,
 				  struct acpi_pci_routing_table *prt)
 {
 	struct acpi_prt_entry *entry;
@@ -196,8 +196,8 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
 	 * 1=INTA, 2=INTB.  We use the PCI encoding throughout, so convert
 	 * it here.
 	 */
-	entry->id.segment = segment;
-	entry->id.bus = bus;
+	entry->id.segment = pci_domain_nr(bus);
+	entry->id.bus = bus->number;
 	entry->id.device = (prt->address >> 16) & 0xFFFF;
 	entry->pin = prt->pin + 1;
 
@@ -242,7 +242,7 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus,
 	return 0;
 }
 
-int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
+int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus)
 {
 	acpi_status status;
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
@@ -271,7 +271,7 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
 
 	entry = buffer.pointer;
 	while (entry && (entry->length > 0)) {
-		acpi_pci_irq_add_entry(handle, segment, bus, entry);
+		acpi_pci_irq_add_entry(handle, bus, entry);
 		entry = (struct acpi_pci_routing_table *)
 		    ((unsigned long)entry + entry->length);
 	}
@@ -280,16 +280,17 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
 	return 0;
 }
 
-void acpi_pci_irq_del_prt(int segment, int bus)
+void acpi_pci_irq_del_prt(struct pci_bus *bus)
 {
 	struct acpi_prt_entry *entry, *tmp;
 
 	printk(KERN_DEBUG
 	       "ACPI: Delete PCI Interrupt Routing Table for %04x:%02x\n",
-	       segment, bus);
+	       pci_domain_nr(bus), bus->number);
 	spin_lock(&acpi_prt_lock);
 	list_for_each_entry_safe(entry, tmp, &acpi_prt_list, list) {
-		if (segment == entry->id.segment && bus == entry->id.bus) {
+		if (pci_domain_nr(bus) == entry->id.segment
+			&& bus->number == entry->id.bus) {
 			list_del(&entry->list);
 			kfree(entry);
 		}
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 196f97d00956..8a5bf3b356fa 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -63,9 +63,10 @@ static struct acpi_driver acpi_pci_root_driver = {
 
 struct acpi_pci_root {
 	struct list_head node;
-	struct acpi_device * device;
-	struct acpi_pci_id id;
+	struct acpi_device *device;
 	struct pci_bus *bus;
+	u16 segment;
+	u8 bus_nr;
 
 	u32 osc_support_set;	/* _OSC state of support bits */
 	u32 osc_control_set;	/* _OSC state of control bits */
@@ -82,7 +83,7 @@ static DEFINE_MUTEX(osc_lock);
 int acpi_pci_register_driver(struct acpi_pci_driver *driver)
 {
 	int n = 0;
-	struct list_head *entry;
+	struct acpi_pci_root *root;
 
 	struct acpi_pci_driver **pptr = &sub_driver;
 	while (*pptr)
@@ -92,9 +93,7 @@ int acpi_pci_register_driver(struct acpi_pci_driver *driver)
 	if (!driver->add)
 		return 0;
 
-	list_for_each(entry, &acpi_pci_roots) {
-		struct acpi_pci_root *root;
-		root = list_entry(entry, struct acpi_pci_root, node);
+	list_for_each_entry(root, &acpi_pci_roots, node) {
 		driver->add(root->device->handle);
 		n++;
 	}
@@ -106,7 +105,7 @@ EXPORT_SYMBOL(acpi_pci_register_driver);
 
 void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
 {
-	struct list_head *entry;
+	struct acpi_pci_root *root;
 
 	struct acpi_pci_driver **pptr = &sub_driver;
 	while (*pptr) {
@@ -120,28 +119,48 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
 	if (!driver->remove)
 		return;
 
-	list_for_each(entry, &acpi_pci_roots) {
-		struct acpi_pci_root *root;
-		root = list_entry(entry, struct acpi_pci_root, node);
+	list_for_each_entry(root, &acpi_pci_roots, node)
 		driver->remove(root->device->handle);
-	}
 }
 
 EXPORT_SYMBOL(acpi_pci_unregister_driver);
 
 acpi_handle acpi_get_pci_rootbridge_handle(unsigned int seg, unsigned int bus)
 {
-	struct acpi_pci_root *tmp;
+	struct acpi_pci_root *root;
 	
-	list_for_each_entry(tmp, &acpi_pci_roots, node) {
-		if ((tmp->id.segment == (u16) seg) && (tmp->id.bus == (u16) bus))
-			return tmp->device->handle;
-	}
+	list_for_each_entry(root, &acpi_pci_roots, node)
+		if ((root->segment == (u16) seg) && (root->bus_nr == (u16) bus))
+			return root->device->handle;
 	return NULL;		
 }
 
 EXPORT_SYMBOL_GPL(acpi_get_pci_rootbridge_handle);
 
+/**
+ * acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge
+ * @handle - the ACPI CA node in question.
+ *
+ * Note: we could make this API take a struct acpi_device * instead, but
+ * for now, it's more convenient to operate on an acpi_handle.
+ */
+int acpi_is_root_bridge(acpi_handle handle)
+{
+	int ret;
+	struct acpi_device *device;
+
+	ret = acpi_bus_get_device(handle, &device);
+	if (ret)
+		return 0;
+
+	ret = acpi_match_device_ids(device, root_device_ids);
+	if (ret)
+		return 0;
+	else
+		return 1;
+}
+EXPORT_SYMBOL_GPL(acpi_is_root_bridge);
+
 static acpi_status
 get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
 {
@@ -161,19 +180,22 @@ get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
 	return AE_OK;
 }
 
-static acpi_status try_get_root_bridge_busnr(acpi_handle handle, int *busnum)
+static acpi_status try_get_root_bridge_busnr(acpi_handle handle,
+					     unsigned long long *bus)
 {
 	acpi_status status;
+	int busnum;
 
-	*busnum = -1;
+	busnum = -1;
 	status =
 	    acpi_walk_resources(handle, METHOD_NAME__CRS,
-				get_root_bridge_busnr_callback, busnum);
+				get_root_bridge_busnr_callback, &busnum);
 	if (ACPI_FAILURE(status))
 		return status;
 	/* Check if we really get a bus number from _CRS */
-	if (*busnum == -1)
+	if (busnum == -1)
 		return AE_ERROR;
+	*bus = busnum;
 	return AE_OK;
 }
 
@@ -298,6 +320,7 @@ static acpi_status acpi_pci_osc_support(struct acpi_pci_root *root, u32 flags)
 static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
 {
 	struct acpi_pci_root *root;
+
 	list_for_each_entry(root, &acpi_pci_roots, node) {
 		if (root->device->handle == handle)
 			return root;
@@ -305,6 +328,87 @@ static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
 	return NULL;
 }
 
+struct acpi_handle_node {
+	struct list_head node;
+	acpi_handle handle;
+};
+
+/**
+ * acpi_get_pci_dev - convert ACPI CA handle to struct pci_dev
+ * @handle: the handle in question
+ *
+ * Given an ACPI CA handle, the desired PCI device is located in the
+ * list of PCI devices.
+ *
+ * If the device is found, its reference count is increased and this
+ * function returns a pointer to its data structure.  The caller must
+ * decrement the reference count by calling pci_dev_put().
+ * If no device is found, %NULL is returned.
+ */
+struct pci_dev *acpi_get_pci_dev(acpi_handle handle)
+{
+	int dev, fn;
+	unsigned long long adr;
+	acpi_status status;
+	acpi_handle phandle;
+	struct pci_bus *pbus;
+	struct pci_dev *pdev = NULL;
+	struct acpi_handle_node *node, *tmp;
+	struct acpi_pci_root *root;
+	LIST_HEAD(device_list);
+
+	/*
+	 * Walk up the ACPI CA namespace until we reach a PCI root bridge.
+	 */
+	phandle = handle;
+	while (!acpi_is_root_bridge(phandle)) {
+		node = kzalloc(sizeof(struct acpi_handle_node), GFP_KERNEL);
+		if (!node)
+			goto out;
+
+		INIT_LIST_HEAD(&node->node);
+		node->handle = phandle;
+		list_add(&node->node, &device_list);
+
+		status = acpi_get_parent(phandle, &phandle);
+		if (ACPI_FAILURE(status))
+			goto out;
+	}
+
+	root = acpi_pci_find_root(phandle);
+	if (!root)
+		goto out;
+
+	pbus = root->bus;
+
+	/*
+	 * Now, walk back down the PCI device tree until we return to our
+	 * original handle. Assumes that everything between the PCI root
+	 * bridge and the device we're looking for must be a P2P bridge.
+	 */
+	list_for_each_entry(node, &device_list, node) {
+		acpi_handle hnd = node->handle;
+		status = acpi_evaluate_integer(hnd, "_ADR", NULL, &adr);
+		if (ACPI_FAILURE(status))
+			goto out;
+		dev = (adr >> 16) & 0xffff;
+		fn  = adr & 0xffff;
+
+		pdev = pci_get_slot(pbus, PCI_DEVFN(dev, fn));
+		if (hnd == handle)
+			break;
+
+		pbus = pdev->subordinate;
+		pci_dev_put(pdev);
+	}
+out:
+	list_for_each_entry_safe(node, tmp, &device_list, node)
+		kfree(node);
+
+	return pdev;
+}
+EXPORT_SYMBOL_GPL(acpi_get_pci_dev);
+
 /**
  * acpi_pci_osc_control_set - commit requested control to Firmware
  * @handle: acpi_handle for the target ACPI object
@@ -363,31 +467,46 @@ EXPORT_SYMBOL(acpi_pci_osc_control_set);
 
 static int __devinit acpi_pci_root_add(struct acpi_device *device)
 {
-	int result = 0;
-	struct acpi_pci_root *root = NULL;
-	struct acpi_pci_root *tmp;
-	acpi_status status = AE_OK;
-	unsigned long long value = 0;
-	acpi_handle handle = NULL;
+	unsigned long long segment, bus;
+	acpi_status status;
+	int result;
+	struct acpi_pci_root *root;
+	acpi_handle handle;
 	struct acpi_device *child;
 	u32 flags, base_flags;
 
+	segment = 0;
+	status = acpi_evaluate_integer(device->handle, METHOD_NAME__SEG, NULL,
+				       &segment);
+	if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+		printk(KERN_ERR PREFIX "can't evaluate _SEG\n");
+		return -ENODEV;
+	}
 
-	if (!device)
-		return -EINVAL;
+	/* Check _CRS first, then _BBN.  If no _BBN, default to zero. */
+	bus = 0;
+	status = try_get_root_bridge_busnr(device->handle, &bus);
+	if (ACPI_FAILURE(status)) {
+		status = acpi_evaluate_integer(device->handle, METHOD_NAME__BBN,					       NULL, &bus);
+		if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+			printk(KERN_ERR PREFIX
+			     "no bus number in _CRS and can't evaluate _BBN\n");
+			return -ENODEV;
+		}
+	}
 
 	root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
 	if (!root)
 		return -ENOMEM;
-	INIT_LIST_HEAD(&root->node);
 
+	INIT_LIST_HEAD(&root->node);
 	root->device = device;
+	root->segment = segment & 0xFFFF;
+	root->bus_nr = bus & 0xFF;
 	strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
 	strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
 	device->driver_data = root;
 
-	device->ops.bind = acpi_pci_bind;
-
 	/*
 	 * All supported architectures that use ACPI have support for
 	 * PCI domains, so we indicate this in _OSC support capabilities.
@@ -395,79 +514,6 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 	flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT;
 	acpi_pci_osc_support(root, flags);
 
-	/* 
-	 * Segment
-	 * -------
-	 * Obtained via _SEG, if exists, otherwise assumed to be zero (0).
-	 */
-	status = acpi_evaluate_integer(device->handle, METHOD_NAME__SEG, NULL,
-				       &value);
-	switch (status) {
-	case AE_OK:
-		root->id.segment = (u16) value;
-		break;
-	case AE_NOT_FOUND:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-				  "Assuming segment 0 (no _SEG)\n"));
-		root->id.segment = 0;
-		break;
-	default:
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SEG"));
-		result = -ENODEV;
-		goto end;
-	}
-
-	/* 
-	 * Bus
-	 * ---
-	 * Obtained via _BBN, if exists, otherwise assumed to be zero (0).
-	 */
-	status = acpi_evaluate_integer(device->handle, METHOD_NAME__BBN, NULL,
-				       &value);
-	switch (status) {
-	case AE_OK:
-		root->id.bus = (u16) value;
-		break;
-	case AE_NOT_FOUND:
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Assuming bus 0 (no _BBN)\n"));
-		root->id.bus = 0;
-		break;
-	default:
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BBN"));
-		result = -ENODEV;
-		goto end;
-	}
-
-	/* Some systems have wrong _BBN */
-	list_for_each_entry(tmp, &acpi_pci_roots, node) {
-		if ((tmp->id.segment == root->id.segment)
-		    && (tmp->id.bus == root->id.bus)) {
-			int bus = 0;
-			acpi_status status;
-
-			printk(KERN_ERR PREFIX
-				    "Wrong _BBN value, reboot"
-				    " and use option 'pci=noacpi'\n");
-
-			status = try_get_root_bridge_busnr(device->handle, &bus);
-			if (ACPI_FAILURE(status))
-				break;
-			if (bus != root->id.bus) {
-				printk(KERN_INFO PREFIX
-				       "PCI _CRS %d overrides _BBN 0\n", bus);
-				root->id.bus = bus;
-			}
-			break;
-		}
-	}
-	/*
-	 * Device & Function
-	 * -----------------
-	 * Obtained from _ADR (which has already been evaluated for us).
-	 */
-	root->id.device = device->pnp.bus_address >> 16;
-	root->id.function = device->pnp.bus_address & 0xFFFF;
-
 	/*
 	 * TBD: Need PCI interface for enumeration/configuration of roots.
 	 */
@@ -477,7 +523,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 
 	printk(KERN_INFO PREFIX "%s [%s] (%04x:%02x)\n",
 	       acpi_device_name(device), acpi_device_bid(device),
-	       root->id.segment, root->id.bus);
+	       root->segment, root->bus_nr);
 
 	/*
 	 * Scan the Root Bridge
@@ -486,11 +532,11 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 	 * PCI namespace does not get created until this call is made (and 
 	 * thus the root bridge's pci_dev does not exist).
 	 */
-	root->bus = pci_acpi_scan_root(device, root->id.segment, root->id.bus);
+	root->bus = pci_acpi_scan_root(device, segment, bus);
 	if (!root->bus) {
 		printk(KERN_ERR PREFIX
 			    "Bus %04x:%02x not present in PCI namespace\n",
-			    root->id.segment, root->id.bus);
+			    root->segment, root->bus_nr);
 		result = -ENODEV;
 		goto end;
 	}
@@ -500,7 +546,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 	 * -----------------------
 	 * Thus binding the ACPI and PCI devices.
 	 */
-	result = acpi_pci_bind_root(device, &root->id, root->bus);
+	result = acpi_pci_bind_root(device);
 	if (result)
 		goto end;
 
@@ -511,8 +557,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 	 */
 	status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle);
 	if (ACPI_SUCCESS(status))
-		result = acpi_pci_irq_add_prt(device->handle, root->id.segment,
-					      root->id.bus);
+		result = acpi_pci_irq_add_prt(device->handle, root->bus);
 
 	/*
 	 * Scan and bind all _ADR-Based Devices
@@ -531,42 +576,28 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 	if (flags != base_flags)
 		acpi_pci_osc_support(root, flags);
 
-      end:
-	if (result) {
-		if (!list_empty(&root->node))
-			list_del(&root->node);
-		kfree(root);
-	}
+	return 0;
 
+end:
+	if (!list_empty(&root->node))
+		list_del(&root->node);
+	kfree(root);
 	return result;
 }
 
 static int acpi_pci_root_start(struct acpi_device *device)
 {
-	struct acpi_pci_root *root;
+	struct acpi_pci_root *root = acpi_driver_data(device);
 
-
-	list_for_each_entry(root, &acpi_pci_roots, node) {
-		if (root->device == device) {
-			pci_bus_add_devices(root->bus);
-			return 0;
-		}
-	}
-	return -ENODEV;
+	pci_bus_add_devices(root->bus);
+	return 0;
 }
 
 static int acpi_pci_root_remove(struct acpi_device *device, int type)
 {
-	struct acpi_pci_root *root = NULL;
-
-
-	if (!device || !acpi_driver_data(device))
-		return -EINVAL;
-
-	root = acpi_driver_data(device);
+	struct acpi_pci_root *root = acpi_driver_data(device);
 
 	kfree(root);
-
 	return 0;
 }
 
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 56665a63bf19..d74365d4a6e7 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -194,7 +194,7 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state)
 
 static int acpi_power_on(acpi_handle handle, struct acpi_device *dev)
 {
-	int result = 0, state;
+	int result = 0;
 	int found = 0;
 	acpi_status status = AE_OK;
 	struct acpi_power_resource *resource = NULL;
@@ -236,18 +236,6 @@ static int acpi_power_on(acpi_handle handle, struct acpi_device *dev)
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
-	if (!acpi_power_nocheck) {
-		/*
-		 * If acpi_power_nocheck is set, it is unnecessary to check
-		 * the power state after power transition.
-		 */
-		result = acpi_power_get_state(resource->device->handle,
-				&state);
-		if (result)
-			return result;
-		if (state != ACPI_POWER_RESOURCE_STATE_ON)
-			return -ENOEXEC;
-	}
 	/* Update the power resource's _device_ power state */
 	resource->device->power.state = ACPI_STATE_D0;
 
@@ -258,7 +246,7 @@ static int acpi_power_on(acpi_handle handle, struct acpi_device *dev)
 
 static int acpi_power_off_device(acpi_handle handle, struct acpi_device *dev)
 {
-	int result = 0, state;
+	int result = 0;
 	acpi_status status = AE_OK;
 	struct acpi_power_resource *resource = NULL;
 	struct list_head *node, *next;
@@ -293,18 +281,6 @@ static int acpi_power_off_device(acpi_handle handle, struct acpi_device *dev)
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
-	if (!acpi_power_nocheck) {
-		/*
-		 * If acpi_power_nocheck is set, it is unnecessary to check
-		 * the power state after power transition.
-		 */
-		result = acpi_power_get_state(handle, &state);
-		if (result)
-			return result;
-		if (state != ACPI_POWER_RESOURCE_STATE_OFF)
-			return -ENOEXEC;
-	}
-
 	/* Update the power resource's _device_ power state */
 	resource->device->power.state = ACPI_STATE_D3;
 
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 23f0fb84f1c1..84e0f3c07442 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -89,7 +89,7 @@ static int acpi_processor_handle_eject(struct acpi_processor *pr);
 
 static const struct acpi_device_id processor_device_ids[] = {
 	{ACPI_PROCESSOR_OBJECT_HID, 0},
-	{ACPI_PROCESSOR_HID, 0},
+	{"ACPI0007", 0},
 	{"", 0},
 };
 MODULE_DEVICE_TABLE(acpi, processor_device_ids);
@@ -596,7 +596,21 @@ static int acpi_processor_get_info(struct acpi_device *device)
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "No bus mastering arbitration control\n"));
 
-	if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_HID)) {
+	if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
+		/* Declared with "Processor" statement; match ProcessorID */
+		status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
+		if (ACPI_FAILURE(status)) {
+			printk(KERN_ERR PREFIX "Evaluating processor object\n");
+			return -ENODEV;
+		}
+
+		/*
+		 * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
+		 *      >>> 'acpi_get_processor_id(acpi_id, &id)' in
+		 *      arch/xxx/acpi.c
+		 */
+		pr->acpi_id = object.processor.proc_id;
+	} else {
 		/*
 		 * Declared with "Device" statement; match _UID.
 		 * Note that we don't handle string _UIDs yet.
@@ -611,20 +625,6 @@ static int acpi_processor_get_info(struct acpi_device *device)
 		}
 		device_declaration = 1;
 		pr->acpi_id = value;
-	} else {
-		/* Declared with "Processor" statement; match ProcessorID */
-		status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
-		if (ACPI_FAILURE(status)) {
-			printk(KERN_ERR PREFIX "Evaluating processor object\n");
-			return -ENODEV;
-		}
-
-		/*
-		 * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
-		 *      >>> 'acpi_get_processor_id(acpi_id, &id)' in
-		 *      arch/xxx/acpi.c
-		 */
-		pr->acpi_id = object.processor.proc_id;
 	}
 	cpu_index = get_cpu_id(pr->handle, device_declaration, pr->acpi_id);
 
@@ -649,7 +649,16 @@ static int acpi_processor_get_info(struct acpi_device *device)
 			return -ENODEV;
 		}
 	}
-
+	/*
+	 * On some boxes several processors use the same processor bus id.
+	 * But they are located in different scope. For example:
+	 * \_SB.SCK0.CPU0
+	 * \_SB.SCK1.CPU0
+	 * Rename the processor device bus id. And the new bus id will be
+	 * generated as the following format:
+	 * CPU+CPU ID.
+	 */
+	sprintf(acpi_device_bid(device), "CPU%X", pr->id);
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
 			  pr->acpi_id));
 
@@ -731,6 +740,8 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
 	/* _PDC call should be done before doing anything else (if reqd.). */
 	arch_acpi_processor_init_pdc(pr);
 	acpi_processor_set_pdc(pr);
+	arch_acpi_processor_cleanup_pdc(pr);
+
 #ifdef CONFIG_CPU_FREQ
 	acpi_processor_ppc_has_changed(pr);
 #endif
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 10a2d913635a..0efa59e7e3af 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -139,7 +139,7 @@ static void acpi_safe_halt(void)
  * are affected too. We pick the most conservative approach: we assume
  * that the local APIC stops in both C2 and C3.
  */
-static void acpi_timer_check_state(int state, struct acpi_processor *pr,
+static void lapic_timer_check_state(int state, struct acpi_processor *pr,
 				   struct acpi_processor_cx *cx)
 {
 	struct acpi_processor_power *pwr = &pr->power;
@@ -162,7 +162,7 @@ static void acpi_timer_check_state(int state, struct acpi_processor *pr,
 		pr->power.timer_broadcast_on_state = state;
 }
 
-static void acpi_propagate_timer_broadcast(struct acpi_processor *pr)
+static void lapic_timer_propagate_broadcast(struct acpi_processor *pr)
 {
 	unsigned long reason;
 
@@ -173,7 +173,7 @@ static void acpi_propagate_timer_broadcast(struct acpi_processor *pr)
 }
 
 /* Power(C) State timer broadcast control */
-static void acpi_state_timer_broadcast(struct acpi_processor *pr,
+static void lapic_timer_state_broadcast(struct acpi_processor *pr,
 				       struct acpi_processor_cx *cx,
 				       int broadcast)
 {
@@ -190,10 +190,10 @@ static void acpi_state_timer_broadcast(struct acpi_processor *pr,
 
 #else
 
-static void acpi_timer_check_state(int state, struct acpi_processor *pr,
+static void lapic_timer_check_state(int state, struct acpi_processor *pr,
 				   struct acpi_processor_cx *cstate) { }
-static void acpi_propagate_timer_broadcast(struct acpi_processor *pr) { }
-static void acpi_state_timer_broadcast(struct acpi_processor *pr,
+static void lapic_timer_propagate_broadcast(struct acpi_processor *pr) { }
+static void lapic_timer_state_broadcast(struct acpi_processor *pr,
 				       struct acpi_processor_cx *cx,
 				       int broadcast)
 {
@@ -515,7 +515,8 @@ static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
 static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
 					   struct acpi_processor_cx *cx)
 {
-	static int bm_check_flag;
+	static int bm_check_flag = -1;
+	static int bm_control_flag = -1;
 
 
 	if (!cx->address)
@@ -545,12 +546,14 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
 	}
 
 	/* All the logic here assumes flags.bm_check is same across all CPUs */
-	if (!bm_check_flag) {
+	if (bm_check_flag == -1) {
 		/* Determine whether bm_check is needed based on CPU  */
 		acpi_processor_power_init_bm_check(&(pr->flags), pr->id);
 		bm_check_flag = pr->flags.bm_check;
+		bm_control_flag = pr->flags.bm_control;
 	} else {
 		pr->flags.bm_check = bm_check_flag;
+		pr->flags.bm_control = bm_control_flag;
 	}
 
 	if (pr->flags.bm_check) {
@@ -614,29 +617,25 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
 		switch (cx->type) {
 		case ACPI_STATE_C1:
 			cx->valid = 1;
-			acpi_timer_check_state(i, pr, cx);
 			break;
 
 		case ACPI_STATE_C2:
 			acpi_processor_power_verify_c2(cx);
-			if (cx->valid)
-				acpi_timer_check_state(i, pr, cx);
 			break;
 
 		case ACPI_STATE_C3:
 			acpi_processor_power_verify_c3(pr, cx);
-			if (cx->valid)
-				acpi_timer_check_state(i, pr, cx);
 			break;
 		}
-		if (cx->valid)
-			tsc_check_state(cx->type);
+		if (!cx->valid)
+			continue;
 
-		if (cx->valid)
-			working++;
+		lapic_timer_check_state(i, pr, cx);
+		tsc_check_state(cx->type);
+		working++;
 	}
 
-	acpi_propagate_timer_broadcast(pr);
+	lapic_timer_propagate_broadcast(pr);
 
 	return (working);
 }
@@ -839,7 +838,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 		return 0;
 	}
 
-	acpi_state_timer_broadcast(pr, cx, 1);
+	lapic_timer_state_broadcast(pr, cx, 1);
 	kt1 = ktime_get_real();
 	acpi_idle_do_entry(cx);
 	kt2 = ktime_get_real();
@@ -847,7 +846,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 
 	local_irq_enable();
 	cx->usage++;
-	acpi_state_timer_broadcast(pr, cx, 0);
+	lapic_timer_state_broadcast(pr, cx, 0);
 
 	return idle_time;
 }
@@ -892,7 +891,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 	 * Must be done before busmaster disable as we might need to
 	 * access HPET !
 	 */
-	acpi_state_timer_broadcast(pr, cx, 1);
+	lapic_timer_state_broadcast(pr, cx, 1);
 
 	if (cx->type == ACPI_STATE_C3)
 		ACPI_FLUSH_CPU_CACHE();
@@ -914,7 +913,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 
 	cx->usage++;
 
-	acpi_state_timer_broadcast(pr, cx, 0);
+	lapic_timer_state_broadcast(pr, cx, 0);
 	cx->time += sleep_ticks;
 	return idle_time;
 }
@@ -981,7 +980,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 	 * Must be done before busmaster disable as we might need to
 	 * access HPET !
 	 */
-	acpi_state_timer_broadcast(pr, cx, 1);
+	lapic_timer_state_broadcast(pr, cx, 1);
 
 	kt1 = ktime_get_real();
 	/*
@@ -1026,7 +1025,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 
 	cx->usage++;
 
-	acpi_state_timer_broadcast(pr, cx, 0);
+	lapic_timer_state_broadcast(pr, cx, 0);
 	cx->time += sleep_ticks;
 	return idle_time;
 }
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 8ff510b91d88..781435d7e369 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -95,7 +95,7 @@ acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, cha
 }
 static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
 
-static int acpi_bus_hot_remove_device(void *context)
+static void acpi_bus_hot_remove_device(void *context)
 {
 	struct acpi_device *device;
 	acpi_handle handle = context;
@@ -104,10 +104,10 @@ static int acpi_bus_hot_remove_device(void *context)
 	acpi_status status = AE_OK;
 
 	if (acpi_bus_get_device(handle, &device))
-		return 0;
+		return;
 
 	if (!device)
-		return 0;
+		return;
 
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 		"Hot-removing device %s...\n", dev_name(&device->dev)));
@@ -115,7 +115,7 @@ static int acpi_bus_hot_remove_device(void *context)
 	if (acpi_bus_trim(device, 1)) {
 		printk(KERN_ERR PREFIX
 				"Removing device failed\n");
-		return -1;
+		return;
 	}
 
 	/* power off device */
@@ -142,9 +142,10 @@ static int acpi_bus_hot_remove_device(void *context)
 	 */
 	status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
 	if (ACPI_FAILURE(status))
-		return -ENODEV;
+		printk(KERN_WARNING PREFIX
+				"Eject device failed\n");
 
-	return 0;
+	return;
 }
 
 static ssize_t
@@ -155,7 +156,6 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
 	acpi_status status;
 	acpi_object_type type = 0;
 	struct acpi_device *acpi_device = to_acpi_device(d);
-	struct task_struct *task;
 
 	if ((!count) || (buf[0] != '1')) {
 		return -EINVAL;
@@ -172,11 +172,7 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
 		goto err;
 	}
 
-	/* remove the device in another thread to fix the deadlock issue */
-	task = kthread_run(acpi_bus_hot_remove_device,
-				acpi_device->handle, "acpi_hot_remove_device");
-	if (IS_ERR(task))
-		ret = PTR_ERR(task);
+	acpi_os_hotplug_execute(acpi_bus_hot_remove_device, acpi_device->handle);
 err:
 	return ret;
 }
@@ -198,12 +194,12 @@ acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *b
 	int result;
 
 	result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path);
-	if(result)
+	if (result)
 		goto end;
 
 	result = sprintf(buf, "%s\n", (char*)path.pointer);
 	kfree(path.pointer);
-  end:
+end:
 	return result;
 }
 static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL);
@@ -217,21 +213,21 @@ static int acpi_device_setup_files(struct acpi_device *dev)
 	/*
 	 * Devices gotten from FADT don't have a "path" attribute
 	 */
-	if(dev->handle) {
+	if (dev->handle) {
 		result = device_create_file(&dev->dev, &dev_attr_path);
-		if(result)
+		if (result)
 			goto end;
 	}
 
-	if(dev->flags.hardware_id) {
+	if (dev->flags.hardware_id) {
 		result = device_create_file(&dev->dev, &dev_attr_hid);
-		if(result)
+		if (result)
 			goto end;
 	}
 
-	if (dev->flags.hardware_id || dev->flags.compatible_ids){
+	if (dev->flags.hardware_id || dev->flags.compatible_ids) {
 		result = device_create_file(&dev->dev, &dev_attr_modalias);
-		if(result)
+		if (result)
 			goto end;
 	}
 
@@ -242,7 +238,7 @@ static int acpi_device_setup_files(struct acpi_device *dev)
 	status = acpi_get_handle(dev->handle, "_EJ0", &temp);
 	if (ACPI_SUCCESS(status))
 		result = device_create_file(&dev->dev, &dev_attr_eject);
-  end:
+end:
 	return result;
 }
 
@@ -262,9 +258,9 @@ static void acpi_device_remove_files(struct acpi_device *dev)
 	if (dev->flags.hardware_id || dev->flags.compatible_ids)
 		device_remove_file(&dev->dev, &dev_attr_modalias);
 
-	if(dev->flags.hardware_id)
+	if (dev->flags.hardware_id)
 		device_remove_file(&dev->dev, &dev_attr_hid);
-	if(dev->handle)
+	if (dev->handle)
 		device_remove_file(&dev->dev, &dev_attr_path);
 }
 /* --------------------------------------------------------------------------
@@ -512,7 +508,7 @@ static int acpi_device_register(struct acpi_device *device,
 			break;
 		}
 	}
-	if(!found) {
+	if (!found) {
 		acpi_device_bus_id = new_bus_id;
 		strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "device");
 		acpi_device_bus_id->instance_no = 0;
@@ -530,22 +526,21 @@ static int acpi_device_register(struct acpi_device *device,
 	if (device->parent)
 		device->dev.parent = &parent->dev;
 	device->dev.bus = &acpi_bus_type;
-	device_initialize(&device->dev);
 	device->dev.release = &acpi_device_release;
-	result = device_add(&device->dev);
-	if(result) {
-		dev_err(&device->dev, "Error adding device\n");
+	result = device_register(&device->dev);
+	if (result) {
+		dev_err(&device->dev, "Error registering device\n");
 		goto end;
 	}
 
 	result = acpi_device_setup_files(device);
-	if(result)
+	if (result)
 		printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
 		       dev_name(&device->dev));
 
 	device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
 	return 0;
-  end:
+end:
 	mutex_lock(&acpi_device_lock);
 	if (device->parent)
 		list_del(&device->node);
@@ -577,7 +572,7 @@ static void acpi_device_unregister(struct acpi_device *device, int type)
  * @device: the device to add and initialize
  * @driver: driver for the device
  *
- * Used to initialize a device via its device driver.  Called whenever a 
+ * Used to initialize a device via its device driver.  Called whenever a
  * driver is bound to a device.  Invokes the driver's add() ops.
  */
 static int
@@ -585,7 +580,6 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
 {
 	int result = 0;
 
-
 	if (!device || !driver)
 		return -EINVAL;
 
@@ -802,7 +796,7 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
 	if (!acpi_match_device_ids(device, button_device_ids))
 		device->wakeup.flags.run_wake = 1;
 
-      end:
+end:
 	if (ACPI_FAILURE(status))
 		device->flags.wake_capable = 0;
 	return 0;
@@ -1070,7 +1064,7 @@ static void acpi_device_set_id(struct acpi_device *device,
 		break;
 	}
 
-	/* 
+	/*
 	 * \_SB
 	 * ----
 	 * Fix for the system root bus device -- the only root-level device.
@@ -1320,7 +1314,7 @@ acpi_add_single_object(struct acpi_device **child,
 			device->parent->ops.bind(device);
 	}
 
-      end:
+end:
 	if (!result)
 		*child = device;
 	else {
@@ -1464,7 +1458,6 @@ acpi_bus_add(struct acpi_device **child,
 
 	return result;
 }
-
 EXPORT_SYMBOL(acpi_bus_add);
 
 int acpi_bus_start(struct acpi_device *device)
@@ -1484,7 +1477,6 @@ int acpi_bus_start(struct acpi_device *device)
 	}
 	return result;
 }
-
 EXPORT_SYMBOL(acpi_bus_start);
 
 int acpi_bus_trim(struct acpi_device *start, int rmdevice)
@@ -1542,7 +1534,6 @@ int acpi_bus_trim(struct acpi_device *start, int rmdevice)
 }
 EXPORT_SYMBOL_GPL(acpi_bus_trim);
 
-
 static int acpi_bus_scan_fixed(struct acpi_device *root)
 {
 	int result = 0;
@@ -1610,6 +1601,6 @@ int __init acpi_scan_init(void)
 	if (result)
 		acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
 
-      Done:
+Done:
 	return result;
 }
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 1bdfb37377e3..8851315ce858 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -76,6 +76,7 @@ MODULE_LICENSE("GPL");
 static int brightness_switch_enabled = 1;
 module_param(brightness_switch_enabled, bool, 0644);
 
+static int register_count = 0;
 static int acpi_video_bus_add(struct acpi_device *device);
 static int acpi_video_bus_remove(struct acpi_device *device, int type);
 static int acpi_video_resume(struct acpi_device *device);
@@ -586,6 +587,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"),
 		},
 	},
+	{
+	 .callback = video_set_bqc_offset,
+	 .ident = "Acer Aspire 7720",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"),
+		},
+	},
 	{}
 };
 
@@ -976,6 +985,11 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 		device->backlight->props.max_brightness = device->brightness->count-3;
 		kfree(name);
 
+		result = sysfs_create_link(&device->backlight->dev.kobj,
+					   &device->dev->dev.kobj, "device");
+		if (result)
+			printk(KERN_ERR PREFIX "Create sysfs link\n");
+
 		device->cdev = thermal_cooling_device_register("LCD",
 					device->dev, &video_cooling_ops);
 		if (IS_ERR(device->cdev))
@@ -1054,15 +1068,15 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
 static int acpi_video_bus_check(struct acpi_video_bus *video)
 {
 	acpi_status status = -ENOENT;
-	struct device *dev;
+	struct pci_dev *dev;
 
 	if (!video)
 		return -EINVAL;
 
-	dev = acpi_get_physical_pci_device(video->device->handle);
+	dev = acpi_get_pci_dev(video->device->handle);
 	if (!dev)
 		return -ENODEV;
-	put_device(dev);
+	pci_dev_put(dev);
 
 	/* Since there is no HID, CID and so on for VGA driver, we have
 	 * to check well known required nodes.
@@ -1990,6 +2004,7 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
 	status = acpi_remove_notify_handler(device->dev->handle,
 					    ACPI_DEVICE_NOTIFY,
 					    acpi_video_device_notify);
+	sysfs_remove_link(&device->backlight->dev.kobj, "device");
 	backlight_device_unregister(device->backlight);
 	if (device->cdev) {
 		sysfs_remove_link(&device->dev->dev.kobj,
@@ -2318,6 +2333,13 @@ static int __init intel_opregion_present(void)
 int acpi_video_register(void)
 {
 	int result = 0;
+	if (register_count) {
+		/*
+		 * if the function of acpi_video_register is already called,
+		 * don't register the acpi_vide_bus again and return no error.
+		 */
+		return 0;
+	}
 
 	acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
 	if (!acpi_video_dir)
@@ -2329,10 +2351,35 @@ int acpi_video_register(void)
 		return -ENODEV;
 	}
 
+	/*
+	 * When the acpi_video_bus is loaded successfully, increase
+	 * the counter reference.
+	 */
+	register_count = 1;
+
 	return 0;
 }
 EXPORT_SYMBOL(acpi_video_register);
 
+void acpi_video_unregister(void)
+{
+	if (!register_count) {
+		/*
+		 * If the acpi video bus is already unloaded, don't
+		 * unload it again and return directly.
+		 */
+		return;
+	}
+	acpi_bus_unregister_driver(&acpi_video_bus);
+
+	remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
+
+	register_count = 0;
+
+	return;
+}
+EXPORT_SYMBOL(acpi_video_unregister);
+
 /*
  * This is kind of nasty. Hardware using Intel chipsets may require
  * the video opregion code to be run first in order to initialise
@@ -2350,16 +2397,12 @@ static int __init acpi_video_init(void)
 	return acpi_video_register();
 }
 
-void acpi_video_exit(void)
+static void __exit acpi_video_exit(void)
 {
-
-	acpi_bus_unregister_driver(&acpi_video_bus);
-
-	remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
+	acpi_video_unregister();
 
 	return;
 }
-EXPORT_SYMBOL(acpi_video_exit);
 
 module_init(acpi_video_init);
 module_exit(acpi_video_exit);
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 09737275e25f..7cd2b63435ea 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -10,7 +10,7 @@
  * assinged
  *
  * After PCI devices are glued with ACPI devices
- * acpi_get_physical_pci_device() can be called to identify ACPI graphics
+ * acpi_get_pci_dev() can be called to identify ACPI graphics
  * devices for which a real graphics card is plugged in
  *
  * Now acpi_video_get_capabilities() can be called to check which
@@ -36,6 +36,7 @@
 
 #include <linux/acpi.h>
 #include <linux/dmi.h>
+#include <linux/pci.h>
 
 ACPI_MODULE_NAME("video");
 #define _COMPONENT		ACPI_VIDEO_COMPONENT
@@ -109,7 +110,7 @@ static acpi_status
 find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
 	long *cap = context;
-	struct device *dev;
+	struct pci_dev *dev;
 	struct acpi_device *acpi_dev;
 
 	const struct acpi_device_id video_ids[] = {
@@ -120,10 +121,10 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
 		return AE_OK;
 
 	if (!acpi_match_device_ids(acpi_dev, video_ids)) {
-		dev = acpi_get_physical_pci_device(handle);
+		dev = acpi_get_pci_dev(handle);
 		if (!dev)
 			return AE_OK;
-		put_device(dev);
+		pci_dev_put(dev);
 		*cap |= acpi_is_video_device(acpi_dev);
 	}
 	return AE_OK;
diff --git a/drivers/gpu/drm/i915/i915_opregion.c b/drivers/gpu/drm/i915/i915_opregion.c
index dc425e74a268..e4b4e8898e39 100644
--- a/drivers/gpu/drm/i915/i915_opregion.c
+++ b/drivers/gpu/drm/i915/i915_opregion.c
@@ -419,7 +419,7 @@ void intel_opregion_free(struct drm_device *dev, int suspend)
 		return;
 
 	if (!suspend)
-		acpi_video_exit();
+		acpi_video_unregister();
 
 	opregion->acpi->drdy = 0;
 
diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index fbc63d5e459f..eb159587d0bf 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -354,7 +354,7 @@ acpi_status acpi_get_hp_params_from_firmware(struct pci_bus *bus,
 		status = acpi_run_hpp(handle, hpp);
 		if (ACPI_SUCCESS(status))
 			break;
-		if (acpi_root_bridge(handle))
+		if (acpi_is_root_bridge(handle))
 			break;
 		status = acpi_get_parent(handle, &phandle);
 		if (ACPI_FAILURE(status))
@@ -428,7 +428,7 @@ int acpi_get_hp_hw_control_from_firmware(struct pci_dev *pdev, u32 flags)
 		status = acpi_run_oshp(handle);
 		if (ACPI_SUCCESS(status))
 			goto got_one;
-		if (acpi_root_bridge(handle))
+		if (acpi_is_root_bridge(handle))
 			break;
 		chandle = handle;
 		status = acpi_get_parent(chandle, &handle);
@@ -449,42 +449,6 @@ got_one:
 }
 EXPORT_SYMBOL(acpi_get_hp_hw_control_from_firmware);
 
-/* acpi_root_bridge - check to see if this acpi object is a root bridge
- *
- * @handle - the acpi object in question.
- */
-int acpi_root_bridge(acpi_handle handle)
-{
-	acpi_status status;
-	struct acpi_device_info *info;
-	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-	int i;
-
-	status = acpi_get_object_info(handle, &buffer);
-	if (ACPI_SUCCESS(status)) {
-		info = buffer.pointer;
-		if ((info->valid & ACPI_VALID_HID) &&
-			!strcmp(PCI_ROOT_HID_STRING,
-					info->hardware_id.value)) {
-			kfree(buffer.pointer);
-			return 1;
-		}
-		if (info->valid & ACPI_VALID_CID) {
-			for (i=0; i < info->compatibility_id.count; i++) {
-				if (!strcmp(PCI_ROOT_HID_STRING,
-					info->compatibility_id.id[i].value)) {
-					kfree(buffer.pointer);
-					return 1;
-				}
-			}
-		}
-		kfree(buffer.pointer);
-	}
-	return 0;
-}
-EXPORT_SYMBOL_GPL(acpi_root_bridge);
-
-
 static int is_ejectable(acpi_handle handle)
 {
 	acpi_status status;
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 3a6064bce561..0cb0f830a993 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -678,18 +678,9 @@ static void remove_bridge(acpi_handle handle)
 
 static struct pci_dev * get_apic_pci_info(acpi_handle handle)
 {
-	struct acpi_pci_id id;
-	struct pci_bus *bus;
 	struct pci_dev *dev;
 
-	if (ACPI_FAILURE(acpi_get_pci_id(handle, &id)))
-		return NULL;
-
-	bus = pci_find_bus(id.segment, id.bus);
-	if (!bus)
-		return NULL;
-
-	dev = pci_get_slot(bus, PCI_DEVFN(id.device, id.function));
+	dev = acpi_get_pci_dev(handle);
 	if (!dev)
 		return NULL;
 
@@ -1396,19 +1387,16 @@ static void acpiphp_sanitize_bus(struct pci_bus *bus)
 /* Program resources in newly inserted bridge */
 static int acpiphp_configure_bridge (acpi_handle handle)
 {
-	struct acpi_pci_id pci_id;
+	struct pci_dev *dev;
 	struct pci_bus *bus;
 
-	if (ACPI_FAILURE(acpi_get_pci_id(handle, &pci_id))) {
+	dev = acpi_get_pci_dev(handle);
+	if (!dev) {
 		err("cannot get PCI domain and bus number for bridge\n");
 		return -EINVAL;
 	}
-	bus = pci_find_bus(pci_id.segment, pci_id.bus);
-	if (!bus) {
-		err("cannot find bus %d:%d\n",
-				pci_id.segment, pci_id.bus);
-		return -EINVAL;
-	}
+
+	bus = dev->bus;
 
 	pci_bus_size_bridges(bus);
 	pci_bus_assign_resources(bus);
@@ -1416,6 +1404,7 @@ static int acpiphp_configure_bridge (acpi_handle handle)
 	acpiphp_set_hpp_values(handle, bus);
 	pci_enable_bridges(bus);
 	acpiphp_configure_ioapics(handle);
+	pci_dev_put(dev);
 	return 0;
 }
 
@@ -1631,7 +1620,7 @@ find_root_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
 	int *count = (int *)context;
 
-	if (acpi_root_bridge(handle)) {
+	if (acpi_is_root_bridge(handle)) {
 		acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
 				handle_hotplug_event_bridge, NULL);
 			(*count)++;
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index c682ac536415..7232fe7104aa 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -34,10 +34,27 @@ config ACER_WMI
 	  If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M
 	  here.
 
+config ACERHDF
+	tristate "Acer Aspire One temperature and fan driver"
+	depends on THERMAL && THERMAL_HWMON && ACPI
+	---help---
+	  This is a driver for Acer Aspire One netbooks. It allows to access
+	  the temperature sensor and to control the fan.
+
+	  After loading this driver the BIOS is still in control of the fan.
+	  To let the kernel handle the fan, do:
+	  echo -n enabled > /sys/class/thermal/thermal_zone0/mode
+
+	  For more information about this driver see
+	  <http://piie.net/files/acerhdf_README.txt>
+
+	  If you have an Acer Aspire One netbook, say Y or M
+	  here.
+
 config ASUS_LAPTOP
-	tristate "Asus Laptop Extras (EXPERIMENTAL)"
+	tristate "Asus Laptop Extras"
 	depends on ACPI
-	depends on EXPERIMENTAL && !ACPI_ASUS
+	depends on !ACPI_ASUS
 	select LEDS_CLASS
 	select NEW_LEDS
 	select BACKLIGHT_CLASS_DEVICE
@@ -45,12 +62,12 @@ config ASUS_LAPTOP
 	---help---
 	  This is the new Linux driver for Asus laptops. It may also support some
 	  MEDION, JVC or VICTOR laptops. It makes all the extra buttons generate
-	  standard ACPI events that go through /proc/acpi/events. It also adds
+	  standard ACPI events and input events. It also adds
 	  support for video output switching, LCD backlight control, Bluetooth and
 	  Wlan control, and most importantly, allows you to blink those fancy LEDs.
 
 	  For more information and a userspace daemon for handling the extra
-	  buttons see <http://acpi4asus.sf.net/>.
+	  buttons see <http://acpi4asus.sf.net>.
 
 	  If you have an ACPI-compatible ASUS laptop, say Y or M here.
 
@@ -342,7 +359,10 @@ config EEEPC_LAPTOP
 	select HWMON
 	---help---
 	  This driver supports the Fn-Fx keys on Eee PC laptops.
-	  It also adds the ability to switch camera/wlan on/off.
+
+	  It  also gives access to some extra laptop functionalities like
+	  Bluetooth, backlight and allows powering on/off some other
+	  devices.
 
 	  If you have an Eee PC laptop, say Y or M here.
 
@@ -369,7 +389,7 @@ config ACPI_WMI
 	  any ACPI-WMI devices.
 
 config ACPI_ASUS
-	tristate "ASUS/Medion Laptop Extras"
+	tristate "ASUS/Medion Laptop Extras (DEPRECATED)"
 	depends on ACPI
 	select BACKLIGHT_CLASS_DEVICE
 	---help---
@@ -390,7 +410,7 @@ config ACPI_ASUS
 	  parameters.
 
 	  More information and a userspace daemon for handling the extra buttons
-	  at <http://sourceforge.net/projects/acpi4asus/>.
+	  at <http://acpi4asus.sf.net>.
 
 	  If you have an ACPI-compatible ASUS laptop, say Y or M here. This
 	  driver is still under development, so if your laptop is unsupported or
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index e40c7bd1b87e..641b8bfa5538 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_COMPAL_LAPTOP)	+= compal-laptop.o
 obj-$(CONFIG_DELL_LAPTOP)	+= dell-laptop.o
 obj-$(CONFIG_DELL_WMI)		+= dell-wmi.o
 obj-$(CONFIG_ACER_WMI)		+= acer-wmi.o
+obj-$(CONFIG_ACERHDF)		+= acerhdf.o
 obj-$(CONFIG_HP_WMI)		+= hp-wmi.o
 obj-$(CONFIG_TC1100_WMI)	+= tc1100-wmi.o
 obj-$(CONFIG_SONY_LAPTOP)	+= sony-laptop.o
diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
new file mode 100644
index 000000000000..bdfee177eefb
--- /dev/null
+++ b/drivers/platform/x86/acerhdf.c
@@ -0,0 +1,602 @@
+/*
+ * acerhdf - A driver which monitors the temperature
+ *           of the aspire one netbook, turns on/off the fan
+ *           as soon as the upper/lower threshold is reached.
+ *
+ * (C) 2009 - Peter Feuerer     peter (a) piie.net
+ *                              http://piie.net
+ *     2009 Borislav Petkov <petkovbb@gmail.com>
+ *
+ * Inspired by and many thanks to:
+ *  o acerfand   - Rachel Greenham
+ *  o acer_ec.pl - Michael Kurz     michi.kurz (at) googlemail.com
+ *               - Petr Tomasek     tomasek (#) etf,cuni,cz
+ *               - Carlos Corbacho  cathectic (at) gmail.com
+ *  o lkml       - Matthew Garrett
+ *               - Borislav Petkov
+ *               - Andreas Mohr
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define pr_fmt(fmt) "acerhdf: " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/dmi.h>
+#include <acpi/acpi_drivers.h>
+#include <linux/sched.h>
+#include <linux/thermal.h>
+#include <linux/platform_device.h>
+
+/*
+ * The driver is started with "kernel mode off" by default. That means, the BIOS
+ * is still in control of the fan. In this mode the driver allows to read the
+ * temperature of the cpu and a userspace tool may take over control of the fan.
+ * If the driver is switched to "kernel mode" (e.g. via module parameter) the
+ * driver is in full control of the fan. If you want the module to be started in
+ * kernel mode by default, define the following:
+ */
+#undef START_IN_KERNEL_MODE
+
+#define DRV_VER "0.5.13"
+
+/*
+ * According to the Atom N270 datasheet,
+ * (http://download.intel.com/design/processor/datashts/320032.pdf) the
+ * CPU's optimal operating limits denoted in junction temperature as
+ * measured by the on-die thermal monitor are within 0 <= Tj <= 90. So,
+ * assume 89°C is critical temperature.
+ */
+#define ACERHDF_TEMP_CRIT 89
+#define ACERHDF_FAN_OFF 0
+#define ACERHDF_FAN_AUTO 1
+
+/*
+ * No matter what value the user puts into the fanon variable, turn on the fan
+ * at 80 degree Celsius to prevent hardware damage
+ */
+#define ACERHDF_MAX_FANON 80
+
+/*
+ * Maximum interval between two temperature checks is 15 seconds, as the die
+ * can get hot really fast under heavy load (plus we shouldn't forget about
+ * possible impact of _external_ aggressive sources such as heaters, sun etc.)
+ */
+#define ACERHDF_MAX_INTERVAL 15
+
+#ifdef START_IN_KERNEL_MODE
+static int kernelmode = 1;
+#else
+static int kernelmode;
+#endif
+
+static unsigned int interval = 10;
+static unsigned int fanon = 63;
+static unsigned int fanoff = 58;
+static unsigned int verbose;
+static unsigned int fanstate = ACERHDF_FAN_AUTO;
+static char force_bios[16];
+static unsigned int prev_interval;
+struct thermal_zone_device *thz_dev;
+struct thermal_cooling_device *cl_dev;
+struct platform_device *acerhdf_dev;
+
+module_param(kernelmode, uint, 0);
+MODULE_PARM_DESC(kernelmode, "Kernel mode fan control on / off");
+module_param(interval, uint, 0600);
+MODULE_PARM_DESC(interval, "Polling interval of temperature check");
+module_param(fanon, uint, 0600);
+MODULE_PARM_DESC(fanon, "Turn the fan on above this temperature");
+module_param(fanoff, uint, 0600);
+MODULE_PARM_DESC(fanoff, "Turn the fan off below this temperature");
+module_param(verbose, uint, 0600);
+MODULE_PARM_DESC(verbose, "Enable verbose dmesg output");
+module_param_string(force_bios, force_bios, 16, 0);
+MODULE_PARM_DESC(force_bios, "Force BIOS version and omit BIOS check");
+
+/* BIOS settings */
+struct bios_settings_t {
+	const char *vendor;
+	const char *version;
+	unsigned char fanreg;
+	unsigned char tempreg;
+	unsigned char fancmd[2]; /* fan off and auto commands */
+};
+
+/* Register addresses and values for different BIOS versions */
+static const struct bios_settings_t bios_tbl[] = {
+	{"Acer", "v0.3109", 0x55, 0x58, {0x1f, 0x00} },
+	{"Acer", "v0.3114", 0x55, 0x58, {0x1f, 0x00} },
+	{"Acer", "v0.3301", 0x55, 0x58, {0xaf, 0x00} },
+	{"Acer", "v0.3304", 0x55, 0x58, {0xaf, 0x00} },
+	{"Acer", "v0.3305", 0x55, 0x58, {0xaf, 0x00} },
+	{"Acer", "v0.3308", 0x55, 0x58, {0x21, 0x00} },
+	{"Acer", "v0.3309", 0x55, 0x58, {0x21, 0x00} },
+	{"Acer", "v0.3310", 0x55, 0x58, {0x21, 0x00} },
+	{"Gateway", "v0.3103", 0x55, 0x58, {0x21, 0x00} },
+	{"Packard Bell", "v0.3105", 0x55, 0x58, {0x21, 0x00} },
+	{"", "", 0, 0, {0, 0} }
+};
+
+static const struct bios_settings_t *bios_cfg __read_mostly;
+
+
+static int acerhdf_get_temp(int *temp)
+{
+	u8 read_temp;
+
+	if (ec_read(bios_cfg->tempreg, &read_temp))
+		return -EINVAL;
+
+	*temp = read_temp;
+
+	return 0;
+}
+
+static int acerhdf_get_fanstate(int *state)
+{
+	u8 fan;
+	bool tmp;
+
+	if (ec_read(bios_cfg->fanreg, &fan))
+		return -EINVAL;
+
+	tmp = (fan == bios_cfg->fancmd[ACERHDF_FAN_OFF]);
+	*state = tmp ? ACERHDF_FAN_OFF : ACERHDF_FAN_AUTO;
+
+	return 0;
+}
+
+static void acerhdf_change_fanstate(int state)
+{
+	unsigned char cmd;
+
+	if (verbose)
+		pr_notice("fan %s\n", (state == ACERHDF_FAN_OFF) ?
+				"OFF" : "ON");
+
+	if ((state != ACERHDF_FAN_OFF) && (state != ACERHDF_FAN_AUTO)) {
+		pr_err("invalid fan state %d requested, setting to auto!\n",
+			state);
+		state = ACERHDF_FAN_AUTO;
+	}
+
+	cmd = bios_cfg->fancmd[state];
+	fanstate = state;
+
+	ec_write(bios_cfg->fanreg, cmd);
+}
+
+static void acerhdf_check_param(struct thermal_zone_device *thermal)
+{
+	if (fanon > ACERHDF_MAX_FANON) {
+		pr_err("fanon temperature too high, set to %d\n",
+				ACERHDF_MAX_FANON);
+		fanon = ACERHDF_MAX_FANON;
+	}
+
+	if (kernelmode && prev_interval != interval) {
+		if (interval > ACERHDF_MAX_INTERVAL) {
+			pr_err("interval too high, set to %d\n",
+				ACERHDF_MAX_INTERVAL);
+			interval = ACERHDF_MAX_INTERVAL;
+		}
+		if (verbose)
+			pr_notice("interval changed to: %d\n",
+					interval);
+		thermal->polling_delay = interval*1000;
+		prev_interval = interval;
+	}
+}
+
+/*
+ * This is the thermal zone callback which does the delayed polling of the fan
+ * state. We do check /sysfs-originating settings here in acerhdf_check_param()
+ * as late as the polling interval is since we can't do that in the respective
+ * accessors of the module parameters.
+ */
+static int acerhdf_get_ec_temp(struct thermal_zone_device *thermal,
+			       unsigned long *t)
+{
+	int temp, err = 0;
+
+	acerhdf_check_param(thermal);
+
+	err = acerhdf_get_temp(&temp);
+	if (err)
+		return err;
+
+	if (verbose)
+		pr_notice("temp %d\n", temp);
+
+	*t = temp;
+	return 0;
+}
+
+static int acerhdf_bind(struct thermal_zone_device *thermal,
+			struct thermal_cooling_device *cdev)
+{
+	/* if the cooling device is the one from acerhdf bind it */
+	if (cdev != cl_dev)
+		return 0;
+
+	if (thermal_zone_bind_cooling_device(thermal, 0, cdev)) {
+		pr_err("error binding cooling dev\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int acerhdf_unbind(struct thermal_zone_device *thermal,
+			  struct thermal_cooling_device *cdev)
+{
+	if (cdev != cl_dev)
+		return 0;
+
+	if (thermal_zone_unbind_cooling_device(thermal, 0, cdev)) {
+		pr_err("error unbinding cooling dev\n");
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static inline void acerhdf_revert_to_bios_mode(void)
+{
+	acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
+	kernelmode = 0;
+	if (thz_dev)
+		thz_dev->polling_delay = 0;
+	pr_notice("kernel mode fan control OFF\n");
+}
+static inline void acerhdf_enable_kernelmode(void)
+{
+	kernelmode = 1;
+
+	thz_dev->polling_delay = interval*1000;
+	thermal_zone_device_update(thz_dev);
+	pr_notice("kernel mode fan control ON\n");
+}
+
+static int acerhdf_get_mode(struct thermal_zone_device *thermal,
+			    enum thermal_device_mode *mode)
+{
+	if (verbose)
+		pr_notice("kernel mode fan control %d\n", kernelmode);
+
+	*mode = (kernelmode) ? THERMAL_DEVICE_ENABLED
+			     : THERMAL_DEVICE_DISABLED;
+
+	return 0;
+}
+
+/*
+ * set operation mode;
+ * enabled: the thermal layer of the kernel takes care about
+ *          the temperature and the fan.
+ * disabled: the BIOS takes control of the fan.
+ */
+static int acerhdf_set_mode(struct thermal_zone_device *thermal,
+			    enum thermal_device_mode mode)
+{
+	if (mode == THERMAL_DEVICE_DISABLED && kernelmode)
+		acerhdf_revert_to_bios_mode();
+	else if (mode == THERMAL_DEVICE_ENABLED && !kernelmode)
+		acerhdf_enable_kernelmode();
+
+	return 0;
+}
+
+static int acerhdf_get_trip_type(struct thermal_zone_device *thermal, int trip,
+				 enum thermal_trip_type *type)
+{
+	if (trip == 0)
+		*type = THERMAL_TRIP_ACTIVE;
+
+	return 0;
+}
+
+static int acerhdf_get_trip_temp(struct thermal_zone_device *thermal, int trip,
+				 unsigned long *temp)
+{
+	if (trip == 0)
+		*temp = fanon;
+
+	return 0;
+}
+
+static int acerhdf_get_crit_temp(struct thermal_zone_device *thermal,
+				 unsigned long *temperature)
+{
+	*temperature = ACERHDF_TEMP_CRIT;
+	return 0;
+}
+
+/* bind callback functions to thermalzone */
+struct thermal_zone_device_ops acerhdf_dev_ops = {
+	.bind = acerhdf_bind,
+	.unbind = acerhdf_unbind,
+	.get_temp = acerhdf_get_ec_temp,
+	.get_mode = acerhdf_get_mode,
+	.set_mode = acerhdf_set_mode,
+	.get_trip_type = acerhdf_get_trip_type,
+	.get_trip_temp = acerhdf_get_trip_temp,
+	.get_crit_temp = acerhdf_get_crit_temp,
+};
+
+
+/*
+ * cooling device callback functions
+ * get maximal fan cooling state
+ */
+static int acerhdf_get_max_state(struct thermal_cooling_device *cdev,
+				 unsigned long *state)
+{
+	*state = 1;
+
+	return 0;
+}
+
+static int acerhdf_get_cur_state(struct thermal_cooling_device *cdev,
+				 unsigned long *state)
+{
+	int err = 0, tmp;
+
+	err = acerhdf_get_fanstate(&tmp);
+	if (err)
+		return err;
+
+	*state = (tmp == ACERHDF_FAN_AUTO) ? 1 : 0;
+	return 0;
+}
+
+/* change current fan state - is overwritten when running in kernel mode */
+static int acerhdf_set_cur_state(struct thermal_cooling_device *cdev,
+				 unsigned long state)
+{
+	int cur_temp, cur_state, err = 0;
+
+	if (!kernelmode)
+		return 0;
+
+	err = acerhdf_get_temp(&cur_temp);
+	if (err) {
+		pr_err("error reading temperature, hand off control to BIOS\n");
+		goto err_out;
+	}
+
+	err = acerhdf_get_fanstate(&cur_state);
+	if (err) {
+		pr_err("error reading fan state, hand off control to BIOS\n");
+		goto err_out;
+	}
+
+	if (state == 0) {
+		/* turn fan off only if below fanoff temperature */
+		if ((cur_state == ACERHDF_FAN_AUTO) &&
+		    (cur_temp < fanoff))
+			acerhdf_change_fanstate(ACERHDF_FAN_OFF);
+	} else {
+		if (cur_state == ACERHDF_FAN_OFF)
+			acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
+	}
+	return 0;
+
+err_out:
+	acerhdf_revert_to_bios_mode();
+	return -EINVAL;
+}
+
+/* bind fan callbacks to fan device */
+struct thermal_cooling_device_ops acerhdf_cooling_ops = {
+	.get_max_state = acerhdf_get_max_state,
+	.get_cur_state = acerhdf_get_cur_state,
+	.set_cur_state = acerhdf_set_cur_state,
+};
+
+/* suspend / resume functionality */
+static int acerhdf_suspend(struct platform_device *dev, pm_message_t state)
+{
+	if (kernelmode)
+		acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
+
+	if (verbose)
+		pr_notice("going suspend\n");
+
+	return 0;
+}
+
+static int acerhdf_resume(struct platform_device *device)
+{
+	if (verbose)
+		pr_notice("resuming\n");
+
+	return 0;
+}
+
+static int __devinit acerhdf_probe(struct platform_device *device)
+{
+	return 0;
+}
+
+static int acerhdf_remove(struct platform_device *device)
+{
+	return 0;
+}
+
+struct platform_driver acerhdf_drv = {
+	.driver = {
+		.name = "acerhdf",
+		.owner = THIS_MODULE,
+	},
+	.probe = acerhdf_probe,
+	.remove = acerhdf_remove,
+	.suspend = acerhdf_suspend,
+	.resume = acerhdf_resume,
+};
+
+
+/* check hardware */
+static int acerhdf_check_hardware(void)
+{
+	char const *vendor, *version, *product;
+	int i;
+
+	/* get BIOS data */
+	vendor  = dmi_get_system_info(DMI_SYS_VENDOR);
+	version = dmi_get_system_info(DMI_BIOS_VERSION);
+	product = dmi_get_system_info(DMI_PRODUCT_NAME);
+
+	pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER);
+
+	if (!force_bios[0]) {
+		if (strncmp(product, "AO", 2)) {
+			pr_err("no Aspire One hardware found\n");
+			return -EINVAL;
+		}
+	} else {
+		pr_info("forcing BIOS version: %s\n", version);
+		version = force_bios;
+		kernelmode = 0;
+	}
+
+	if (verbose)
+		pr_info("BIOS info: %s %s, product: %s\n",
+			vendor, version, product);
+
+	/* search BIOS version and vendor in BIOS settings table */
+	for (i = 0; bios_tbl[i].version[0]; i++) {
+		if (!strcmp(bios_tbl[i].vendor, vendor) &&
+		    !strcmp(bios_tbl[i].version, version)) {
+			bios_cfg = &bios_tbl[i];
+			break;
+		}
+	}
+
+	if (!bios_cfg) {
+		pr_err("unknown (unsupported) BIOS version %s/%s, "
+			"please report, aborting!\n", vendor, version);
+		return -EINVAL;
+	}
+
+	/*
+	 * if started with kernel mode off, prevent the kernel from switching
+	 * off the fan
+	 */
+	if (!kernelmode) {
+		pr_notice("Fan control off, to enable do:\n");
+		pr_notice("echo -n \"enabled\" > "
+			"/sys/class/thermal/thermal_zone0/mode\n");
+	}
+
+	return 0;
+}
+
+static int acerhdf_register_platform(void)
+{
+	int err = 0;
+
+	err = platform_driver_register(&acerhdf_drv);
+	if (err)
+		return err;
+
+	acerhdf_dev = platform_device_alloc("acerhdf", -1);
+	platform_device_add(acerhdf_dev);
+
+	return 0;
+}
+
+static void acerhdf_unregister_platform(void)
+{
+	if (!acerhdf_dev)
+		return;
+
+	platform_device_del(acerhdf_dev);
+	platform_driver_unregister(&acerhdf_drv);
+}
+
+static int acerhdf_register_thermal(void)
+{
+	cl_dev = thermal_cooling_device_register("acerhdf-fan", NULL,
+						 &acerhdf_cooling_ops);
+
+	if (IS_ERR(cl_dev))
+		return -EINVAL;
+
+	thz_dev = thermal_zone_device_register("acerhdf", 1, NULL,
+					      &acerhdf_dev_ops, 0, 0, 0,
+					      (kernelmode) ? interval*1000 : 0);
+	if (IS_ERR(thz_dev))
+		return -EINVAL;
+
+	return 0;
+}
+
+static void acerhdf_unregister_thermal(void)
+{
+	if (cl_dev) {
+		thermal_cooling_device_unregister(cl_dev);
+		cl_dev = NULL;
+	}
+
+	if (thz_dev) {
+		thermal_zone_device_unregister(thz_dev);
+		thz_dev = NULL;
+	}
+}
+
+static int __init acerhdf_init(void)
+{
+	int err = 0;
+
+	err = acerhdf_check_hardware();
+	if (err)
+		goto out_err;
+
+	err = acerhdf_register_platform();
+	if (err)
+		goto err_unreg;
+
+	err = acerhdf_register_thermal();
+	if (err)
+		goto err_unreg;
+
+	return 0;
+
+err_unreg:
+	acerhdf_unregister_thermal();
+	acerhdf_unregister_platform();
+
+out_err:
+	return -ENODEV;
+}
+
+static void __exit acerhdf_exit(void)
+{
+	acerhdf_change_fanstate(ACERHDF_FAN_AUTO);
+	acerhdf_unregister_thermal();
+	acerhdf_unregister_platform();
+}
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Peter Feuerer");
+MODULE_DESCRIPTION("Aspire One temperature and fan driver");
+MODULE_ALIAS("dmi:*:*Acer*:*:");
+MODULE_ALIAS("dmi:*:*Gateway*:*:");
+MODULE_ALIAS("dmi:*:*Packard Bell*:*:");
+
+module_init(acerhdf_init);
+module_exit(acerhdf_exit);
diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
index bfc1a8892a32..db657bbeec90 100644
--- a/drivers/platform/x86/asus-laptop.c
+++ b/drivers/platform/x86/asus-laptop.c
@@ -33,6 +33,8 @@
  *  Sam Lin        - GPS support
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -53,9 +55,10 @@
 #define ASUS_HOTK_NAME          "Asus Laptop Support"
 #define ASUS_HOTK_CLASS         "hotkey"
 #define ASUS_HOTK_DEVICE_NAME   "Hotkey"
-#define ASUS_HOTK_FILE          "asus-laptop"
+#define ASUS_HOTK_FILE          KBUILD_MODNAME
 #define ASUS_HOTK_PREFIX        "\\_SB.ATKD."
 
+
 /*
  * Some events we use, same for all Asus
  */
@@ -207,13 +210,17 @@ MODULE_DEVICE_TABLE(acpi, asus_device_ids);
 
 static int asus_hotk_add(struct acpi_device *device);
 static int asus_hotk_remove(struct acpi_device *device, int type);
+static void asus_hotk_notify(struct acpi_device *device, u32 event);
+
 static struct acpi_driver asus_hotk_driver = {
 	.name = ASUS_HOTK_NAME,
 	.class = ASUS_HOTK_CLASS,
 	.ids = asus_device_ids,
+	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = asus_hotk_add,
 		.remove = asus_hotk_remove,
+		.notify = asus_hotk_notify,
 		},
 };
 
@@ -323,7 +330,7 @@ static int read_wireless_status(int mask)
 
 	rv = acpi_evaluate_integer(wireless_status_handle, NULL, NULL, &status);
 	if (ACPI_FAILURE(rv))
-		printk(ASUS_WARNING "Error reading Wireless status\n");
+		pr_warning("Error reading Wireless status\n");
 	else
 		return (status & mask) ? 1 : 0;
 
@@ -337,7 +344,7 @@ static int read_gps_status(void)
 
 	rv = acpi_evaluate_integer(gps_status_handle, NULL, NULL, &status);
 	if (ACPI_FAILURE(rv))
-		printk(ASUS_WARNING "Error reading GPS status\n");
+		pr_warning("Error reading GPS status\n");
 	else
 		return status ? 1 : 0;
 
@@ -377,7 +384,7 @@ static void write_status(acpi_handle handle, int out, int mask)
 	}
 
 	if (write_acpi_int(handle, NULL, out, NULL))
-		printk(ASUS_WARNING " write failed %x\n", mask);
+		pr_warning(" write failed %x\n", mask);
 }
 
 /* /sys/class/led handlers */
@@ -420,7 +427,7 @@ static int set_lcd_state(int value)
 					      NULL, NULL, NULL);
 
 		if (ACPI_FAILURE(status))
-			printk(ASUS_WARNING "Error switching LCD\n");
+			pr_warning("Error switching LCD\n");
 	}
 
 	write_status(NULL, lcd, LCD_ON);
@@ -444,7 +451,7 @@ static int read_brightness(struct backlight_device *bd)
 
 	rv = acpi_evaluate_integer(brightness_get_handle, NULL, NULL, &value);
 	if (ACPI_FAILURE(rv))
-		printk(ASUS_WARNING "Error reading brightness\n");
+		pr_warning("Error reading brightness\n");
 
 	return value;
 }
@@ -457,7 +464,7 @@ static int set_brightness(struct backlight_device *bd, int value)
 	/* 0 <= value <= 15 */
 
 	if (write_acpi_int(brightness_set_handle, NULL, value, NULL)) {
-		printk(ASUS_WARNING "Error changing brightness\n");
+		pr_warning("Error changing brightness\n");
 		ret = -EIO;
 	}
 
@@ -587,7 +594,7 @@ static ssize_t store_ledd(struct device *dev, struct device_attribute *attr,
 	rv = parse_arg(buf, count, &value);
 	if (rv > 0) {
 		if (write_acpi_int(ledd_set_handle, NULL, value, NULL))
-			printk(ASUS_WARNING "LED display write failed\n");
+			pr_warning("LED display write failed\n");
 		else
 			hotk->ledd_status = (u32) value;
 	}
@@ -632,7 +639,7 @@ static void set_display(int value)
 {
 	/* no sanity check needed for now */
 	if (write_acpi_int(display_set_handle, NULL, value, NULL))
-		printk(ASUS_WARNING "Error setting display\n");
+		pr_warning("Error setting display\n");
 	return;
 }
 
@@ -647,7 +654,7 @@ static int read_display(void)
 		rv = acpi_evaluate_integer(display_get_handle, NULL,
 					   NULL, &value);
 		if (ACPI_FAILURE(rv))
-			printk(ASUS_WARNING "Error reading display status\n");
+			pr_warning("Error reading display status\n");
 	}
 
 	value &= 0x0F;		/* needed for some models, shouldn't hurt others */
@@ -689,7 +696,7 @@ static ssize_t store_disp(struct device *dev, struct device_attribute *attr,
 static void set_light_sens_switch(int value)
 {
 	if (write_acpi_int(ls_switch_handle, NULL, value, NULL))
-		printk(ASUS_WARNING "Error setting light sensor switch\n");
+		pr_warning("Error setting light sensor switch\n");
 	hotk->light_switch = value;
 }
 
@@ -714,7 +721,7 @@ static ssize_t store_lssw(struct device *dev, struct device_attribute *attr,
 static void set_light_sens_level(int value)
 {
 	if (write_acpi_int(ls_level_handle, NULL, value, NULL))
-		printk(ASUS_WARNING "Error setting light sensor level\n");
+		pr_warning("Error setting light sensor level\n");
 	hotk->light_level = value;
 }
 
@@ -812,7 +819,7 @@ static int asus_setkeycode(struct input_dev *dev, int scancode, int keycode)
 	return -EINVAL;
 }
 
-static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
+static void asus_hotk_notify(struct acpi_device *device, u32 event)
 {
 	static struct key_entry *key;
 	u16 count;
@@ -975,11 +982,11 @@ static int asus_hotk_get_info(void)
 	 */
 	status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info);
 	if (ACPI_FAILURE(status))
-		printk(ASUS_WARNING "Couldn't get the DSDT table header\n");
+		pr_warning("Couldn't get the DSDT table header\n");
 
 	/* We have to write 0 on init this far for all ASUS models */
 	if (write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
-		printk(ASUS_ERR "Hotkey initialization failed\n");
+		pr_err("Hotkey initialization failed\n");
 		return -ENODEV;
 	}
 
@@ -987,9 +994,9 @@ static int asus_hotk_get_info(void)
 	status =
 	    acpi_evaluate_integer(hotk->handle, "BSTS", NULL, &bsts_result);
 	if (ACPI_FAILURE(status))
-		printk(ASUS_WARNING "Error calling BSTS\n");
+		pr_warning("Error calling BSTS\n");
 	else if (bsts_result)
-		printk(ASUS_NOTICE "BSTS called, 0x%02x returned\n",
+		pr_notice("BSTS called, 0x%02x returned\n",
 		       (uint) bsts_result);
 
 	/* This too ... */
@@ -1020,7 +1027,7 @@ static int asus_hotk_get_info(void)
 		return -ENOMEM;
 
 	if (*string)
-		printk(ASUS_NOTICE "  %s model detected\n", string);
+		pr_notice("  %s model detected\n", string);
 
 	ASUS_HANDLE_INIT(mled_set);
 	ASUS_HANDLE_INIT(tled_set);
@@ -1077,7 +1084,7 @@ static int asus_input_init(void)
 
 	hotk->inputdev = input_allocate_device();
 	if (!hotk->inputdev) {
-		printk(ASUS_INFO "Unable to allocate input device\n");
+		pr_info("Unable to allocate input device\n");
 		return 0;
 	}
 	hotk->inputdev->name = "Asus Laptop extra buttons";
@@ -1096,7 +1103,7 @@ static int asus_input_init(void)
 	}
 	result = input_register_device(hotk->inputdev);
 	if (result) {
-		printk(ASUS_INFO "Unable to register input device\n");
+		pr_info("Unable to register input device\n");
 		input_free_device(hotk->inputdev);
 	}
 	return result;
@@ -1113,7 +1120,7 @@ static int asus_hotk_check(void)
 	if (hotk->device->status.present) {
 		result = asus_hotk_get_info();
 	} else {
-		printk(ASUS_ERR "Hotkey device not present, aborting\n");
+		pr_err("Hotkey device not present, aborting\n");
 		return -EINVAL;
 	}
 
@@ -1124,13 +1131,12 @@ static int asus_hotk_found;
 
 static int asus_hotk_add(struct acpi_device *device)
 {
-	acpi_status status = AE_OK;
 	int result;
 
 	if (!device)
 		return -EINVAL;
 
-	printk(ASUS_NOTICE "Asus Laptop Support version %s\n",
+	pr_notice("Asus Laptop Support version %s\n",
 	       ASUS_LAPTOP_VERSION);
 
 	hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
@@ -1149,15 +1155,6 @@ static int asus_hotk_add(struct acpi_device *device)
 
 	asus_hotk_add_fs();
 
-	/*
-	 * We install the handler, it will receive the hotk in parameter, so, we
-	 * could add other data to the hotk struct
-	 */
-	status = acpi_install_notify_handler(hotk->handle, ACPI_ALL_NOTIFY,
-					     asus_hotk_notify, hotk);
-	if (ACPI_FAILURE(status))
-		printk(ASUS_ERR "Error installing notify handler\n");
-
 	asus_hotk_found = 1;
 
 	/* WLED and BLED are on by default */
@@ -1198,16 +1195,9 @@ end:
 
 static int asus_hotk_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = 0;
-
 	if (!device || !acpi_driver_data(device))
 		return -EINVAL;
 
-	status = acpi_remove_notify_handler(hotk->handle, ACPI_ALL_NOTIFY,
-					    asus_hotk_notify);
-	if (ACPI_FAILURE(status))
-		printk(ASUS_ERR "Error removing notify handler\n");
-
 	kfree(hotk->name);
 	kfree(hotk);
 
@@ -1260,8 +1250,7 @@ static int asus_backlight_init(struct device *dev)
 		bd = backlight_device_register(ASUS_HOTK_FILE, dev,
 					       NULL, &asusbl_ops);
 		if (IS_ERR(bd)) {
-			printk(ASUS_ERR
-			       "Could not register asus backlight device\n");
+			pr_err("Could not register asus backlight device\n");
 			asus_backlight_device = NULL;
 			return PTR_ERR(bd);
 		}
@@ -1334,7 +1323,6 @@ out:
 
 static int __init asus_laptop_init(void)
 {
-	struct device *dev;
 	int result;
 
 	if (acpi_disabled)
@@ -1356,24 +1344,10 @@ static int __init asus_laptop_init(void)
 		return -ENODEV;
 	}
 
-	dev = acpi_get_physical_device(hotk->device->handle);
-
-	if (!acpi_video_backlight_support()) {
-		result = asus_backlight_init(dev);
-		if (result)
-			goto fail_backlight;
-	} else
-		printk(ASUS_INFO "Brightness ignored, must be controlled by "
-		       "ACPI video driver\n");
-
 	result = asus_input_init();
 	if (result)
 		goto fail_input;
 
-	result = asus_led_init(dev);
-	if (result)
-		goto fail_led;
-
 	/* Register platform stuff */
 	result = platform_driver_register(&asuspf_driver);
 	if (result)
@@ -1394,8 +1368,27 @@ static int __init asus_laptop_init(void)
 	if (result)
 		goto fail_sysfs;
 
+	result = asus_led_init(&asuspf_device->dev);
+	if (result)
+		goto fail_led;
+
+	if (!acpi_video_backlight_support()) {
+		result = asus_backlight_init(&asuspf_device->dev);
+		if (result)
+			goto fail_backlight;
+	} else
+		pr_info("Brightness ignored, must be controlled by "
+		       "ACPI video driver\n");
+
 	return 0;
 
+fail_backlight:
+       asus_led_exit();
+
+fail_led:
+       sysfs_remove_group(&asuspf_device->dev.kobj,
+			  &asuspf_attribute_group);
+
 fail_sysfs:
 	platform_device_del(asuspf_device);
 
@@ -1406,15 +1399,9 @@ fail_platform_device1:
 	platform_driver_unregister(&asuspf_driver);
 
 fail_platform_driver:
-	asus_led_exit();
-
-fail_led:
 	asus_input_exit();
 
 fail_input:
-	asus_backlight_exit();
-
-fail_backlight:
 
 	return result;
 }
diff --git a/drivers/platform/x86/asus_acpi.c b/drivers/platform/x86/asus_acpi.c
index ba1f7497e4b9..ddf5240ade8c 100644
--- a/drivers/platform/x86/asus_acpi.c
+++ b/drivers/platform/x86/asus_acpi.c
@@ -455,6 +455,8 @@ static struct asus_hotk *hotk;
  */
 static int asus_hotk_add(struct acpi_device *device);
 static int asus_hotk_remove(struct acpi_device *device, int type);
+static void asus_hotk_notify(struct acpi_device *device, u32 event);
+
 static const struct acpi_device_id asus_device_ids[] = {
 	{"ATK0100", 0},
 	{"", 0},
@@ -465,9 +467,11 @@ static struct acpi_driver asus_hotk_driver = {
 	.name = "asus_acpi",
 	.class = ACPI_HOTK_CLASS,
 	.ids = asus_device_ids,
+	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = asus_hotk_add,
 		.remove = asus_hotk_remove,
+		.notify = asus_hotk_notify,
 		},
 };
 
@@ -1101,12 +1105,20 @@ static int asus_hotk_remove_fs(struct acpi_device *device)
 	return 0;
 }
 
-static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
+static void asus_hotk_notify(struct acpi_device *device, u32 event)
 {
 	/* TODO Find a better way to handle events count. */
 	if (!hotk)
 		return;
 
+	/*
+	 * The BIOS *should* be sending us device events, but apparently
+	 * Asus uses system events instead, so just ignore any device
+	 * events we get.
+	 */
+	if (event > ACPI_MAX_SYS_NOTIFY)
+		return;
+
 	if ((event & ~((u32) BR_UP)) < 16)
 		hotk->brightness = (event & ~((u32) BR_UP));
 	else if ((event & ~((u32) BR_DOWN)) < 16)
@@ -1346,15 +1358,6 @@ static int asus_hotk_add(struct acpi_device *device)
 	if (result)
 		goto end;
 
-	/*
-	 * We install the handler, it will receive the hotk in parameter, so, we
-	 * could add other data to the hotk struct
-	 */
-	status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
-					     asus_hotk_notify, hotk);
-	if (ACPI_FAILURE(status))
-		printk(KERN_ERR "  Error installing notify handler\n");
-
 	/* For laptops without GPLV: init the hotk->brightness value */
 	if ((!hotk->methods->brightness_get)
 	    && (!hotk->methods->brightness_status)
@@ -1389,16 +1392,9 @@ end:
 
 static int asus_hotk_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = 0;
-
 	if (!device || !acpi_driver_data(device))
 		return -EINVAL;
 
-	status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
-					    asus_hotk_notify);
-	if (ACPI_FAILURE(status))
-		printk(KERN_ERR "Asus ACPI: Error removing notify handler\n");
-
 	asus_hotk_remove_fs(device);
 
 	kfree(hotk);
diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index 2fab94162147..0f900cc9fa7a 100644
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -46,10 +46,53 @@ struct key_entry {
 	u16 keycode;
 };
 
-enum { KE_KEY, KE_SW, KE_END };
+enum { KE_KEY, KE_SW, KE_IGNORE, KE_END };
+
+/*
+ * Certain keys are flagged as KE_IGNORE. All of these are either
+ * notifications (rather than requests for change) or are also sent
+ * via the keyboard controller so should not be sent again.
+ */
 
 static struct key_entry dell_wmi_keymap[] = {
 	{KE_KEY, 0xe045, KEY_PROG1},
+	{KE_KEY, 0xe009, KEY_EJECTCD},
+
+	/* These also contain the brightness level at offset 6 */
+	{KE_KEY, 0xe006, KEY_BRIGHTNESSUP},
+	{KE_KEY, 0xe005, KEY_BRIGHTNESSDOWN},
+
+	/* Battery health status button */
+	{KE_KEY, 0xe007, KEY_BATTERY},
+
+	/* This is actually for all radios. Although physically a
+	 * switch, the notification does not provide an indication of
+	 * state and so it should be reported as a key */
+	{KE_KEY, 0xe008, KEY_WLAN},
+
+	/* The next device is at offset 6, the active devices are at
+	   offset 8 and the attached devices at offset 10 */
+	{KE_KEY, 0xe00b, KEY_DISPLAYTOGGLE},
+
+	{KE_IGNORE, 0xe00c, KEY_KBDILLUMTOGGLE},
+
+	/* BIOS error detected */
+	{KE_IGNORE, 0xe00d, KEY_RESERVED},
+
+	/* Wifi Catcher */
+	{KE_KEY, 0xe011, KEY_PROG2},
+
+	/* Ambient light sensor toggle */
+	{KE_IGNORE, 0xe013, KEY_RESERVED},
+
+	{KE_IGNORE, 0xe020, KEY_MUTE},
+	{KE_IGNORE, 0xe02e, KEY_VOLUMEDOWN},
+	{KE_IGNORE, 0xe030, KEY_VOLUMEUP},
+	{KE_IGNORE, 0xe033, KEY_KBDILLUMUP},
+	{KE_IGNORE, 0xe034, KEY_KBDILLUMDOWN},
+	{KE_IGNORE, 0xe03a, KEY_CAPSLOCK},
+	{KE_IGNORE, 0xe045, KEY_NUMLOCK},
+	{KE_IGNORE, 0xe046, KEY_SCROLLLOCK},
 	{KE_END, 0}
 };
 
@@ -122,15 +165,20 @@ static void dell_wmi_notify(u32 value, void *context)
 
 	if (obj && obj->type == ACPI_TYPE_BUFFER) {
 		int *buffer = (int *)obj->buffer.pointer;
-		key = dell_wmi_get_entry_by_scancode(buffer[1]);
+		/*
+		 *  The upper bytes of the event may contain
+		 *  additional information, so mask them off for the
+		 *  scancode lookup
+		 */
+		key = dell_wmi_get_entry_by_scancode(buffer[1] & 0xFFFF);
 		if (key) {
 			input_report_key(dell_wmi_input_dev, key->keycode, 1);
 			input_sync(dell_wmi_input_dev);
 			input_report_key(dell_wmi_input_dev, key->keycode, 0);
 			input_sync(dell_wmi_input_dev);
-		} else
+		} else if (buffer[1] & 0xFFFF)
 			printk(KERN_INFO "dell-wmi: Unknown key %x pressed\n",
-			       buffer[1]);
+			       buffer[1] & 0xFFFF);
 	}
 }
 
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index 8153b3e59189..4207b26ff990 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -62,7 +62,10 @@ enum {
 	DISABLE_ASL_GPS = 0x0020,
 	DISABLE_ASL_DISPLAYSWITCH = 0x0040,
 	DISABLE_ASL_MODEM = 0x0080,
-	DISABLE_ASL_CARDREADER = 0x0100
+	DISABLE_ASL_CARDREADER = 0x0100,
+	DISABLE_ASL_3G = 0x0200,
+	DISABLE_ASL_WIMAX = 0x0400,
+	DISABLE_ASL_HWCF = 0x0800
 };
 
 enum {
@@ -87,7 +90,13 @@ enum {
 	CM_ASL_USBPORT3,
 	CM_ASL_MODEM,
 	CM_ASL_CARDREADER,
-	CM_ASL_LID
+	CM_ASL_3G,
+	CM_ASL_WIMAX,
+	CM_ASL_HWCF,
+	CM_ASL_LID,
+	CM_ASL_TYPE,
+	CM_ASL_PANELPOWER,	/*P901*/
+	CM_ASL_TPD
 };
 
 static const char *cm_getv[] = {
@@ -96,7 +105,8 @@ static const char *cm_getv[] = {
 	NULL, "PBLG", NULL, NULL,
 	"CFVG", NULL, NULL, NULL,
 	"USBG", NULL, NULL, "MODG",
-	"CRDG", "LIDG"
+	"CRDG", "M3GG", "WIMG", "HWCF",
+	"LIDG",	"TYPE", "PBPG",	"TPDG"
 };
 
 static const char *cm_setv[] = {
@@ -105,7 +115,8 @@ static const char *cm_setv[] = {
 	"SDSP", "PBLS", "HDPS", NULL,
 	"CFVS", NULL, NULL, NULL,
 	"USBG", NULL, NULL, "MODS",
-	"CRDS", NULL
+	"CRDS", "M3GS", "WIMS", NULL,
+	NULL, NULL, "PBPS", "TPDS"
 };
 
 #define EEEPC_EC	"\\_SB.PCI0.SBRG.EC0."
@@ -181,6 +192,7 @@ static struct key_entry eeepc_keymap[] = {
 static int eeepc_hotk_add(struct acpi_device *device);
 static int eeepc_hotk_remove(struct acpi_device *device, int type);
 static int eeepc_hotk_resume(struct acpi_device *device);
+static void eeepc_hotk_notify(struct acpi_device *device, u32 event);
 
 static const struct acpi_device_id eeepc_device_ids[] = {
 	{EEEPC_HOTK_HID, 0},
@@ -192,10 +204,12 @@ static struct acpi_driver eeepc_hotk_driver = {
 	.name = EEEPC_HOTK_NAME,
 	.class = EEEPC_HOTK_CLASS,
 	.ids = eeepc_device_ids,
+	.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
 	.ops = {
 		.add = eeepc_hotk_add,
 		.remove = eeepc_hotk_remove,
 		.resume = eeepc_hotk_resume,
+		.notify = eeepc_hotk_notify,
 	},
 };
 
@@ -318,6 +332,15 @@ static const struct rfkill_ops eeepc_rfkill_ops = {
 	.set_block = eeepc_rfkill_set,
 };
 
+static void __init eeepc_enable_camera(void)
+{
+	/*
+	 * If the following call to set_acpi() fails, it's because there's no
+	 * camera so we can ignore the error.
+	 */
+	set_acpi(CM_ASL_CAMERA, 1);
+}
+
 /*
  * Sys helpers
  */
@@ -369,13 +392,88 @@ static ssize_t show_sys_acpi(int cm, char *buf)
 EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
 EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
 EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
-EEEPC_CREATE_DEVICE_ATTR(cpufv, CM_ASL_CPUFV);
+
+struct eeepc_cpufv {
+	int num;
+	int cur;
+};
+
+static int get_cpufv(struct eeepc_cpufv *c)
+{
+	c->cur = get_acpi(CM_ASL_CPUFV);
+	c->num = (c->cur >> 8) & 0xff;
+	c->cur &= 0xff;
+	if (c->cur < 0 || c->num <= 0 || c->num > 12)
+		return -ENODEV;
+	return 0;
+}
+
+static ssize_t show_available_cpufv(struct device *dev,
+				    struct device_attribute *attr,
+				    char *buf)
+{
+	struct eeepc_cpufv c;
+	int i;
+	ssize_t len = 0;
+
+	if (get_cpufv(&c))
+		return -ENODEV;
+	for (i = 0; i < c.num; i++)
+		len += sprintf(buf + len, "%d ", i);
+	len += sprintf(buf + len, "\n");
+	return len;
+}
+
+static ssize_t show_cpufv(struct device *dev,
+			  struct device_attribute *attr,
+			  char *buf)
+{
+	struct eeepc_cpufv c;
+
+	if (get_cpufv(&c))
+		return -ENODEV;
+	return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
+}
+
+static ssize_t store_cpufv(struct device *dev,
+			   struct device_attribute *attr,
+			   const char *buf, size_t count)
+{
+	struct eeepc_cpufv c;
+	int rv, value;
+
+	if (get_cpufv(&c))
+		return -ENODEV;
+	rv = parse_arg(buf, count, &value);
+	if (rv < 0)
+		return rv;
+	if (!rv || value < 0 || value >= c.num)
+		return -EINVAL;
+	set_acpi(CM_ASL_CPUFV, value);
+	return rv;
+}
+
+static struct device_attribute dev_attr_cpufv = {
+	.attr = {
+		.name = "cpufv",
+		.mode = 0644 },
+	.show   = show_cpufv,
+	.store  = store_cpufv
+};
+
+static struct device_attribute dev_attr_available_cpufv = {
+	.attr = {
+		.name = "available_cpufv",
+		.mode = 0444 },
+	.show   = show_available_cpufv
+};
 
 static struct attribute *platform_attributes[] = {
 	&dev_attr_camera.attr,
 	&dev_attr_cardr.attr,
 	&dev_attr_disp.attr,
 	&dev_attr_cpufv.attr,
+	&dev_attr_available_cpufv.attr,
 	NULL
 };
 
@@ -558,7 +656,7 @@ static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
 	eeepc_rfkill_hotplug();
 }
 
-static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
+static void eeepc_hotk_notify(struct acpi_device *device, u32 event)
 {
 	static struct key_entry *key;
 	u16 count;
@@ -566,6 +664,8 @@ static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
 
 	if (!ehotk)
 		return;
+	if (event > ACPI_MAX_SYS_NOTIFY)
+		return;
 	if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
 		brn = notify_brn();
 	count = ehotk->event_count[event % 128]++;
@@ -646,7 +746,6 @@ static void eeepc_unregister_rfkill_notifier(char *node)
 
 static int eeepc_hotk_add(struct acpi_device *device)
 {
-	acpi_status status = AE_OK;
 	int result;
 
 	if (!device)
@@ -664,10 +763,6 @@ static int eeepc_hotk_add(struct acpi_device *device)
 	result = eeepc_hotk_check();
 	if (result)
 		goto ehotk_fail;
-	status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
-					     eeepc_hotk_notify, ehotk);
-	if (ACPI_FAILURE(status))
-		printk(EEEPC_ERR "Error installing notify handler\n");
 
 	eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
 	eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
@@ -725,14 +820,8 @@ static int eeepc_hotk_add(struct acpi_device *device)
 
 static int eeepc_hotk_remove(struct acpi_device *device, int type)
 {
-	acpi_status status = 0;
-
 	if (!device || !acpi_driver_data(device))
 		 return -EINVAL;
-	status = acpi_remove_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
-					    eeepc_hotk_notify);
-	if (ACPI_FAILURE(status))
-		printk(EEEPC_ERR "Error removing notify handler\n");
 
 	eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
 	eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
@@ -989,6 +1078,9 @@ static int __init eeepc_laptop_init(void)
 	result = eeepc_hwmon_init(dev);
 	if (result)
 		goto fail_hwmon;
+
+	eeepc_enable_camera();
+
 	/* Register platform stuff */
 	result = platform_driver_register(&platform_driver);
 	if (result)
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 16fffe44e333..4ac2311c00af 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -47,7 +47,7 @@ MODULE_ALIAS("wmi:5FB7F034-2C63-45e9-BE91-3D44E2C707E4");
 #define HPWMI_DISPLAY_QUERY 0x1
 #define HPWMI_HDDTEMP_QUERY 0x2
 #define HPWMI_ALS_QUERY 0x3
-#define HPWMI_DOCK_QUERY 0x4
+#define HPWMI_HARDWARE_QUERY 0x4
 #define HPWMI_WIRELESS_QUERY 0x5
 #define HPWMI_HOTKEY_QUERY 0xc
 
@@ -75,10 +75,9 @@ struct key_entry {
 	u16 keycode;
 };
 
-enum { KE_KEY, KE_SW, KE_END };
+enum { KE_KEY, KE_END };
 
 static struct key_entry hp_wmi_keymap[] = {
-	{KE_SW, 0x01, SW_DOCK},
 	{KE_KEY, 0x02, KEY_BRIGHTNESSUP},
 	{KE_KEY, 0x03, KEY_BRIGHTNESSDOWN},
 	{KE_KEY, 0x20e6, KEY_PROG1},
@@ -151,7 +150,22 @@ static int hp_wmi_als_state(void)
 
 static int hp_wmi_dock_state(void)
 {
-	return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0);
+	int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, 0);
+
+	if (ret < 0)
+		return ret;
+
+	return ret & 0x1;
+}
+
+static int hp_wmi_tablet_state(void)
+{
+	int ret = hp_wmi_perform_query(HPWMI_HARDWARE_QUERY, 0, 0);
+
+	if (ret < 0)
+		return ret;
+
+	return (ret & 0x4) ? 1 : 0;
 }
 
 static int hp_wmi_set_block(void *data, bool blocked)
@@ -232,6 +246,15 @@ static ssize_t show_dock(struct device *dev, struct device_attribute *attr,
 	return sprintf(buf, "%d\n", value);
 }
 
+static ssize_t show_tablet(struct device *dev, struct device_attribute *attr,
+			 char *buf)
+{
+	int value = hp_wmi_tablet_state();
+	if (value < 0)
+		return -EINVAL;
+	return sprintf(buf, "%d\n", value);
+}
+
 static ssize_t set_als(struct device *dev, struct device_attribute *attr,
 		       const char *buf, size_t count)
 {
@@ -244,6 +267,7 @@ static DEVICE_ATTR(display, S_IRUGO, show_display, NULL);
 static DEVICE_ATTR(hddtemp, S_IRUGO, show_hddtemp, NULL);
 static DEVICE_ATTR(als, S_IRUGO | S_IWUSR, show_als, set_als);
 static DEVICE_ATTR(dock, S_IRUGO, show_dock, NULL);
+static DEVICE_ATTR(tablet, S_IRUGO, show_tablet, NULL);
 
 static struct key_entry *hp_wmi_get_entry_by_scancode(int code)
 {
@@ -326,13 +350,13 @@ static void hp_wmi_notify(u32 value, void *context)
 						 key->keycode, 0);
 				input_sync(hp_wmi_input_dev);
 				break;
-			case KE_SW:
-				input_report_switch(hp_wmi_input_dev,
-						    key->keycode,
-						    hp_wmi_dock_state());
-				input_sync(hp_wmi_input_dev);
-				break;
 			}
+		} else if (eventcode == 0x1) {
+			input_report_switch(hp_wmi_input_dev, SW_DOCK,
+					    hp_wmi_dock_state());
+			input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+					    hp_wmi_tablet_state());
+			input_sync(hp_wmi_input_dev);
 		} else if (eventcode == 0x5) {
 			if (wifi_rfkill)
 				rfkill_set_sw_state(wifi_rfkill,
@@ -369,18 +393,19 @@ static int __init hp_wmi_input_setup(void)
 			set_bit(EV_KEY, hp_wmi_input_dev->evbit);
 			set_bit(key->keycode, hp_wmi_input_dev->keybit);
 			break;
-		case KE_SW:
-			set_bit(EV_SW, hp_wmi_input_dev->evbit);
-			set_bit(key->keycode, hp_wmi_input_dev->swbit);
-
-			/* Set initial dock state */
-			input_report_switch(hp_wmi_input_dev, key->keycode,
-					    hp_wmi_dock_state());
-			input_sync(hp_wmi_input_dev);
-			break;
 		}
 	}
 
+	set_bit(EV_SW, hp_wmi_input_dev->evbit);
+	set_bit(SW_DOCK, hp_wmi_input_dev->swbit);
+	set_bit(SW_TABLET_MODE, hp_wmi_input_dev->swbit);
+
+	/* Set initial hardware state */
+	input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
+	input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+			    hp_wmi_tablet_state());
+	input_sync(hp_wmi_input_dev);
+
 	err = input_register_device(hp_wmi_input_dev);
 
 	if (err) {
@@ -397,6 +422,7 @@ static void cleanup_sysfs(struct platform_device *device)
 	device_remove_file(&device->dev, &dev_attr_hddtemp);
 	device_remove_file(&device->dev, &dev_attr_als);
 	device_remove_file(&device->dev, &dev_attr_dock);
+	device_remove_file(&device->dev, &dev_attr_tablet);
 }
 
 static int __init hp_wmi_bios_setup(struct platform_device *device)
@@ -416,6 +442,9 @@ static int __init hp_wmi_bios_setup(struct platform_device *device)
 	err = device_create_file(&device->dev, &dev_attr_dock);
 	if (err)
 		goto add_sysfs_error;
+	err = device_create_file(&device->dev, &dev_attr_tablet);
+	if (err)
+		goto add_sysfs_error;
 
 	if (wireless & 0x1) {
 		wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
@@ -485,23 +514,17 @@ static int __exit hp_wmi_bios_remove(struct platform_device *device)
 
 static int hp_wmi_resume_handler(struct platform_device *device)
 {
-	struct key_entry *key;
-
 	/*
-	 * Docking state may have changed while suspended, so trigger
-	 * an input event for the current state. As this is a switch,
+	 * Hardware state may have changed while suspended, so trigger
+	 * input events for the current state. As this is a switch,
 	 * the input layer will only actually pass it on if the state
 	 * changed.
 	 */
-	for (key = hp_wmi_keymap; key->type != KE_END; key++) {
-		switch (key->type) {
-		case KE_SW:
-			input_report_switch(hp_wmi_input_dev, key->keycode,
-					    hp_wmi_dock_state());
-			input_sync(hp_wmi_input_dev);
-			break;
-		}
-	}
+
+	input_report_switch(hp_wmi_input_dev, SW_DOCK, hp_wmi_dock_state());
+	input_report_switch(hp_wmi_input_dev, SW_TABLET_MODE,
+			    hp_wmi_tablet_state());
+	input_sync(hp_wmi_input_dev);
 
 	return 0;
 }
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 40d64c03278c..a463fd72c495 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -22,7 +22,7 @@
  */
 
 #define TPACPI_VERSION "0.23"
-#define TPACPI_SYSFS_VERSION 0x020300
+#define TPACPI_SYSFS_VERSION 0x020400
 
 /*
  *  Changelog:
@@ -257,6 +257,8 @@ static struct {
 	u32 wan:1;
 	u32 uwb:1;
 	u32 fan_ctrl_status_undef:1;
+	u32 second_fan:1;
+	u32 beep_needs_two_args:1;
 	u32 input_device_registered:1;
 	u32 platform_drv_registered:1;
 	u32 platform_drv_attrs_registered:1;
@@ -277,8 +279,10 @@ struct thinkpad_id_data {
 	char *bios_version_str;	/* Something like 1ZET51WW (1.03z) */
 	char *ec_version_str;	/* Something like 1ZHT51WW-1.04a */
 
-	u16 bios_model;		/* Big Endian, TP-1Y = 0x5931, 0 = unknown */
+	u16 bios_model;		/* 1Y = 0x5931, 0 = unknown */
 	u16 ec_model;
+	u16 bios_release;	/* 1ZETK1WW = 0x314b, 0 = unknown */
+	u16 ec_release;
 
 	char *model_str;	/* ThinkPad T43 */
 	char *nummodel_str;	/* 9384A9C for a 9384-A9C model */
@@ -355,6 +359,73 @@ static void tpacpi_log_usertask(const char * const what)
 		} \
 	} while (0)
 
+/*
+ * Quirk handling helpers
+ *
+ * ThinkPad IDs and versions seen in the field so far
+ * are two-characters from the set [0-9A-Z], i.e. base 36.
+ *
+ * We use values well outside that range as specials.
+ */
+
+#define TPACPI_MATCH_ANY		0xffffU
+#define TPACPI_MATCH_UNKNOWN		0U
+
+/* TPID('1', 'Y') == 0x5931 */
+#define TPID(__c1, __c2) (((__c2) << 8) | (__c1))
+
+#define TPACPI_Q_IBM(__id1, __id2, __quirk)	\
+	{ .vendor = PCI_VENDOR_ID_IBM,		\
+	  .bios = TPID(__id1, __id2),		\
+	  .ec = TPACPI_MATCH_ANY,		\
+	  .quirks = (__quirk) }
+
+#define TPACPI_Q_LNV(__id1, __id2, __quirk)	\
+	{ .vendor = PCI_VENDOR_ID_LENOVO,	\
+	  .bios = TPID(__id1, __id2),		\
+	  .ec = TPACPI_MATCH_ANY,		\
+	  .quirks = (__quirk) }
+
+struct tpacpi_quirk {
+	unsigned int vendor;
+	u16 bios;
+	u16 ec;
+	unsigned long quirks;
+};
+
+/**
+ * tpacpi_check_quirks() - search BIOS/EC version on a list
+ * @qlist:		array of &struct tpacpi_quirk
+ * @qlist_size:		number of elements in @qlist
+ *
+ * Iterates over a quirks list until one is found that matches the
+ * ThinkPad's vendor, BIOS and EC model.
+ *
+ * Returns 0 if nothing matches, otherwise returns the quirks field of
+ * the matching &struct tpacpi_quirk entry.
+ *
+ * The match criteria is: vendor, ec and bios much match.
+ */
+static unsigned long __init tpacpi_check_quirks(
+			const struct tpacpi_quirk *qlist,
+			unsigned int qlist_size)
+{
+	while (qlist_size) {
+		if ((qlist->vendor == thinkpad_id.vendor ||
+				qlist->vendor == TPACPI_MATCH_ANY) &&
+		    (qlist->bios == thinkpad_id.bios_model ||
+				qlist->bios == TPACPI_MATCH_ANY) &&
+		    (qlist->ec == thinkpad_id.ec_model ||
+				qlist->ec == TPACPI_MATCH_ANY))
+			return qlist->quirks;
+
+		qlist_size--;
+		qlist++;
+	}
+	return 0;
+}
+
+
 /****************************************************************************
  ****************************************************************************
  *
@@ -2880,7 +2951,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm)
 		/* update bright_acpimode... */
 		tpacpi_check_std_acpi_brightness_support();
 
-	if (tp_features.bright_acpimode) {
+	if (tp_features.bright_acpimode && acpi_video_backlight_support()) {
 		printk(TPACPI_INFO
 		       "This ThinkPad has standard ACPI backlight "
 		       "brightness control, supported by the ACPI "
@@ -4773,7 +4844,7 @@ TPACPI_HANDLE(led, ec, "SLED",	/* 570 */
 	   "LED",		/* all others */
 	   );			/* R30, R31 */
 
-#define TPACPI_LED_NUMLEDS 8
+#define TPACPI_LED_NUMLEDS 16
 static struct tpacpi_led_classdev *tpacpi_leds;
 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS];
 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
@@ -4786,15 +4857,20 @@ static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = {
 	"tpacpi::dock_batt",
 	"tpacpi::unknown_led",
 	"tpacpi::standby",
+	"tpacpi::dock_status1",
+	"tpacpi::dock_status2",
+	"tpacpi::unknown_led2",
+	"tpacpi::unknown_led3",
+	"tpacpi::thinkvantage",
 };
-#define TPACPI_SAFE_LEDS	0x0081U
+#define TPACPI_SAFE_LEDS	0x1081U
 
 static inline bool tpacpi_is_led_restricted(const unsigned int led)
 {
 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
 	return false;
 #else
-	return (TPACPI_SAFE_LEDS & (1 << led)) == 0;
+	return (1U & (TPACPI_SAFE_LEDS >> led)) == 0;
 #endif
 }
 
@@ -4956,6 +5032,10 @@ static int __init tpacpi_init_led(unsigned int led)
 
 	tpacpi_leds[led].led = led;
 
+	/* LEDs with no name don't get registered */
+	if (!tpacpi_led_names[led])
+		return 0;
+
 	tpacpi_leds[led].led_classdev.brightness_set = &led_sysfs_set;
 	tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set;
 	if (led_supported == TPACPI_LED_570)
@@ -4974,10 +5054,59 @@ static int __init tpacpi_init_led(unsigned int led)
 	return rc;
 }
 
+static const struct tpacpi_quirk led_useful_qtable[] __initconst = {
+	TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */
+	TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */
+	TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */
+
+	TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */
+	TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */
+	TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */
+	TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */
+	TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */
+	TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */
+	TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */
+	TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */
+
+	TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */
+	TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */
+	TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */
+	TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */
+	TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */
+
+	TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */
+	TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */
+	TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */
+	TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */
+
+	/* (1) - may have excess leds enabled on MSB */
+
+	/* Defaults (order matters, keep last, don't reorder!) */
+	{ /* Lenovo */
+	  .vendor = PCI_VENDOR_ID_LENOVO,
+	  .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+	  .quirks = 0x1fffU,
+	},
+	{ /* IBM ThinkPads with no EC version string */
+	  .vendor = PCI_VENDOR_ID_IBM,
+	  .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN,
+	  .quirks = 0x00ffU,
+	},
+	{ /* IBM ThinkPads with EC version string */
+	  .vendor = PCI_VENDOR_ID_IBM,
+	  .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY,
+	  .quirks = 0x00bfU,
+	},
+};
+
+#undef TPACPI_LEDQ_IBM
+#undef TPACPI_LEDQ_LNV
+
 static int __init led_init(struct ibm_init_struct *iibm)
 {
 	unsigned int i;
 	int rc;
+	unsigned long useful_leds;
 
 	vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n");
 
@@ -4999,6 +5128,9 @@ static int __init led_init(struct ibm_init_struct *iibm)
 	vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n",
 		str_supported(led_supported), led_supported);
 
+	if (led_supported == TPACPI_LED_NONE)
+		return 1;
+
 	tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS,
 			      GFP_KERNEL);
 	if (!tpacpi_leds) {
@@ -5006,8 +5138,12 @@ static int __init led_init(struct ibm_init_struct *iibm)
 		return -ENOMEM;
 	}
 
+	useful_leds = tpacpi_check_quirks(led_useful_qtable,
+					  ARRAY_SIZE(led_useful_qtable));
+
 	for (i = 0; i < TPACPI_LED_NUMLEDS; i++) {
-		if (!tpacpi_is_led_restricted(i)) {
+		if (!tpacpi_is_led_restricted(i) &&
+		    test_bit(i, &useful_leds)) {
 			rc = tpacpi_init_led(i);
 			if (rc < 0) {
 				led_exit();
@@ -5017,12 +5153,11 @@ static int __init led_init(struct ibm_init_struct *iibm)
 	}
 
 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS
-	if (led_supported != TPACPI_LED_NONE)
-		printk(TPACPI_NOTICE
-			"warning: userspace override of important "
-			"firmware LEDs is enabled\n");
+	printk(TPACPI_NOTICE
+		"warning: userspace override of important "
+		"firmware LEDs is enabled\n");
 #endif
-	return (led_supported != TPACPI_LED_NONE)? 0 : 1;
+	return 0;
 }
 
 #define str_led_status(s) \
@@ -5052,7 +5187,7 @@ static int led_read(char *p)
 	}
 
 	len += sprintf(p + len, "commands:\t"
-		       "<led> on, <led> off, <led> blink (<led> is 0-7)\n");
+		       "<led> on, <led> off, <led> blink (<led> is 0-15)\n");
 
 	return len;
 }
@@ -5067,7 +5202,7 @@ static int led_write(char *buf)
 		return -ENODEV;
 
 	while ((cmd = next_cmd(&buf))) {
-		if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7)
+		if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 15)
 			return -EINVAL;
 
 		if (strstr(cmd, "off")) {
@@ -5101,8 +5236,17 @@ static struct ibm_struct led_driver_data = {
 
 TPACPI_HANDLE(beep, ec, "BEEP");	/* all except R30, R31 */
 
+#define TPACPI_BEEP_Q1 0x0001
+
+static const struct tpacpi_quirk beep_quirk_table[] __initconst = {
+	TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */
+	TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */
+};
+
 static int __init beep_init(struct ibm_init_struct *iibm)
 {
+	unsigned long quirks;
+
 	vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n");
 
 	TPACPI_ACPIHANDLE_INIT(beep);
@@ -5110,6 +5254,11 @@ static int __init beep_init(struct ibm_init_struct *iibm)
 	vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n",
 		str_supported(beep_handle != NULL));
 
+	quirks = tpacpi_check_quirks(beep_quirk_table,
+				     ARRAY_SIZE(beep_quirk_table));
+
+	tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1);
+
 	return (beep_handle)? 0 : 1;
 }
 
@@ -5141,8 +5290,15 @@ static int beep_write(char *buf)
 			/* beep_cmd set */
 		} else
 			return -EINVAL;
-		if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0))
-			return -EIO;
+		if (tp_features.beep_needs_two_args) {
+			if (!acpi_evalf(beep_handle, NULL, NULL, "vdd",
+					beep_cmd, 0))
+				return -EIO;
+		} else {
+			if (!acpi_evalf(beep_handle, NULL, NULL, "vd",
+					beep_cmd))
+				return -EIO;
+		}
 	}
 
 	return 0;
@@ -5569,6 +5725,10 @@ static struct ibm_struct ecdump_driver_data = {
  *   Bit 3-0: backlight brightness level
  *
  * brightness_get_raw returns status data in the HBRV layout
+ *
+ * WARNING: The X61 has been verified to use HBRV for something else, so
+ * this should be used _only_ on IBM ThinkPads, and maybe with some careful
+ * testing on the very early *60 Lenovo models...
  */
 
 enum {
@@ -5869,6 +6029,12 @@ static int __init brightness_init(struct ibm_init_struct *iibm)
 			   brightness_mode);
 	}
 
+	/* Safety */
+	if (thinkpad_id.vendor != PCI_VENDOR_ID_IBM &&
+	    (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM ||
+	     brightness_mode == TPACPI_BRGHT_MODE_EC))
+		return -EINVAL;
+
 	if (tpacpi_brightness_get_raw(&b) < 0)
 		return 1;
 
@@ -6161,6 +6327,21 @@ static struct ibm_struct volume_driver_data = {
  *	For firmware bugs, refer to:
  *	http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues
  *
+ *	----
+ *
+ *	ThinkPad EC register 0x31 bit 0 (only on select models)
+ *
+ *	When bit 0 of EC register 0x31 is zero, the tachometer registers
+ *	show the speed of the main fan.  When bit 0 of EC register 0x31
+ *	is one, the tachometer registers show the speed of the auxiliary
+ *	fan.
+ *
+ *	Fan control seems to affect both fans, regardless of the state
+ *	of this bit.
+ *
+ *	So far, only the firmware for the X60/X61 non-tablet versions
+ *	seem to support this (firmware TP-7M).
+ *
  * TPACPI_FAN_WR_ACPI_FANS:
  *	ThinkPad X31, X40, X41.  Not available in the X60.
  *
@@ -6187,6 +6368,8 @@ enum {					/* Fan control constants */
 	fan_status_offset = 0x2f,	/* EC register 0x2f */
 	fan_rpm_offset = 0x84,		/* EC register 0x84: LSB, 0x85 MSB (RPM)
 					 * 0x84 must be read before 0x85 */
+	fan_select_offset = 0x31,	/* EC register 0x31 (Firmware 7M)
+					   bit 0 selects which fan is active */
 
 	TP_EC_FAN_FULLSPEED = 0x40,	/* EC fan mode: full speed */
 	TP_EC_FAN_AUTO	    = 0x80,	/* EC fan mode: auto fan control */
@@ -6249,30 +6432,18 @@ TPACPI_HANDLE(sfan, ec, "SFAN",	/* 570 */
  * We assume 0x07 really means auto mode while this quirk is active,
  * as this is far more likely than the ThinkPad being in level 7,
  * which is only used by the firmware during thermal emergencies.
+ *
+ * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52),
+ * TP-70 (T43, R52), which are known to be buggy.
  */
 
-static void fan_quirk1_detect(void)
+static void fan_quirk1_setup(void)
 {
-	/* In some ThinkPads, neither the EC nor the ACPI
-	 * DSDT initialize the HFSP register, and it ends up
-	 * being initially set to 0x07 when it *could* be
-	 * either 0x07 or 0x80.
-	 *
-	 * Enable for TP-1Y (T43), TP-78 (R51e),
-	 * TP-76 (R52), TP-70 (T43, R52), which are known
-	 * to be buggy. */
 	if (fan_control_initial_status == 0x07) {
-		switch (thinkpad_id.ec_model) {
-		case 0x5931: /* TP-1Y */
-		case 0x3837: /* TP-78 */
-		case 0x3637: /* TP-76 */
-		case 0x3037: /* TP-70 */
-			printk(TPACPI_NOTICE
-			       "fan_init: initial fan status is unknown, "
-			       "assuming it is in auto mode\n");
-			tp_features.fan_ctrl_status_undef = 1;
-			;;
-		}
+		printk(TPACPI_NOTICE
+		       "fan_init: initial fan status is unknown, "
+		       "assuming it is in auto mode\n");
+		tp_features.fan_ctrl_status_undef = 1;
 	}
 }
 
@@ -6292,6 +6463,38 @@ static void fan_quirk1_handle(u8 *fan_status)
 	}
 }
 
+/* Select main fan on X60/X61, NOOP on others */
+static bool fan_select_fan1(void)
+{
+	if (tp_features.second_fan) {
+		u8 val;
+
+		if (ec_read(fan_select_offset, &val) < 0)
+			return false;
+		val &= 0xFEU;
+		if (ec_write(fan_select_offset, val) < 0)
+			return false;
+	}
+	return true;
+}
+
+/* Select secondary fan on X60/X61 */
+static bool fan_select_fan2(void)
+{
+	u8 val;
+
+	if (!tp_features.second_fan)
+		return false;
+
+	if (ec_read(fan_select_offset, &val) < 0)
+		return false;
+	val |= 0x01U;
+	if (ec_write(fan_select_offset, val) < 0)
+		return false;
+
+	return true;
+}
+
 /*
  * Call with fan_mutex held
  */
@@ -6369,6 +6572,8 @@ static int fan_get_speed(unsigned int *speed)
 	switch (fan_status_access_mode) {
 	case TPACPI_FAN_RD_TPEC:
 		/* all except 570, 600e/x, 770e, 770x */
+		if (unlikely(!fan_select_fan1()))
+			return -EIO;
 		if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) ||
 			     !acpi_ec_read(fan_rpm_offset + 1, &hi)))
 			return -EIO;
@@ -6385,6 +6590,34 @@ static int fan_get_speed(unsigned int *speed)
 	return 0;
 }
 
+static int fan2_get_speed(unsigned int *speed)
+{
+	u8 hi, lo;
+	bool rc;
+
+	switch (fan_status_access_mode) {
+	case TPACPI_FAN_RD_TPEC:
+		/* all except 570, 600e/x, 770e, 770x */
+		if (unlikely(!fan_select_fan2()))
+			return -EIO;
+		rc = !acpi_ec_read(fan_rpm_offset, &lo) ||
+			     !acpi_ec_read(fan_rpm_offset + 1, &hi);
+		fan_select_fan1(); /* play it safe */
+		if (rc)
+			return -EIO;
+
+		if (likely(speed))
+			*speed = (hi << 8) | lo;
+
+		break;
+
+	default:
+		return -ENXIO;
+	}
+
+	return 0;
+}
+
 static int fan_set_level(int level)
 {
 	if (!fan_control_allowed)
@@ -6790,6 +7023,25 @@ static struct device_attribute dev_attr_fan_fan1_input =
 	__ATTR(fan1_input, S_IRUGO,
 		fan_fan1_input_show, NULL);
 
+/* sysfs fan fan2_input ------------------------------------------------ */
+static ssize_t fan_fan2_input_show(struct device *dev,
+			   struct device_attribute *attr,
+			   char *buf)
+{
+	int res;
+	unsigned int speed;
+
+	res = fan2_get_speed(&speed);
+	if (res < 0)
+		return res;
+
+	return snprintf(buf, PAGE_SIZE, "%u\n", speed);
+}
+
+static struct device_attribute dev_attr_fan_fan2_input =
+	__ATTR(fan2_input, S_IRUGO,
+		fan_fan2_input_show, NULL);
+
 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */
 static ssize_t fan_fan_watchdog_show(struct device_driver *drv,
 				     char *buf)
@@ -6823,6 +7075,7 @@ static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO,
 static struct attribute *fan_attributes[] = {
 	&dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr,
 	&dev_attr_fan_fan1_input.attr,
+	NULL, /* for fan2_input */
 	NULL
 };
 
@@ -6830,9 +7083,36 @@ static const struct attribute_group fan_attr_group = {
 	.attrs = fan_attributes,
 };
 
+#define	TPACPI_FAN_Q1	0x0001		/* Unitialized HFSP */
+#define TPACPI_FAN_2FAN	0x0002		/* EC 0x31 bit 0 selects fan2 */
+
+#define TPACPI_FAN_QI(__id1, __id2, __quirks)	\
+	{ .vendor = PCI_VENDOR_ID_IBM,		\
+	  .bios = TPACPI_MATCH_ANY,		\
+	  .ec = TPID(__id1, __id2),		\
+	  .quirks = __quirks }
+
+#define TPACPI_FAN_QL(__id1, __id2, __quirks)	\
+	{ .vendor = PCI_VENDOR_ID_LENOVO,	\
+	  .bios = TPACPI_MATCH_ANY,		\
+	  .ec = TPID(__id1, __id2),		\
+	  .quirks = __quirks }
+
+static const struct tpacpi_quirk fan_quirk_table[] __initconst = {
+	TPACPI_FAN_QI('1', 'Y', TPACPI_FAN_Q1),
+	TPACPI_FAN_QI('7', '8', TPACPI_FAN_Q1),
+	TPACPI_FAN_QI('7', '6', TPACPI_FAN_Q1),
+	TPACPI_FAN_QI('7', '0', TPACPI_FAN_Q1),
+	TPACPI_FAN_QL('7', 'M', TPACPI_FAN_2FAN),
+};
+
+#undef TPACPI_FAN_QL
+#undef TPACPI_FAN_QI
+
 static int __init fan_init(struct ibm_init_struct *iibm)
 {
 	int rc;
+	unsigned long quirks;
 
 	vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
 			"initializing fan subdriver\n");
@@ -6843,12 +7123,16 @@ static int __init fan_init(struct ibm_init_struct *iibm)
 	fan_control_commands = 0;
 	fan_watchdog_maxinterval = 0;
 	tp_features.fan_ctrl_status_undef = 0;
+	tp_features.second_fan = 0;
 	fan_control_desired_level = 7;
 
 	TPACPI_ACPIHANDLE_INIT(fans);
 	TPACPI_ACPIHANDLE_INIT(gfan);
 	TPACPI_ACPIHANDLE_INIT(sfan);
 
+	quirks = tpacpi_check_quirks(fan_quirk_table,
+				     ARRAY_SIZE(fan_quirk_table));
+
 	if (gfan_handle) {
 		/* 570, 600e/x, 770e, 770x */
 		fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN;
@@ -6858,7 +7142,13 @@ static int __init fan_init(struct ibm_init_struct *iibm)
 		if (likely(acpi_ec_read(fan_status_offset,
 					&fan_control_initial_status))) {
 			fan_status_access_mode = TPACPI_FAN_RD_TPEC;
-			fan_quirk1_detect();
+			if (quirks & TPACPI_FAN_Q1)
+				fan_quirk1_setup();
+			if (quirks & TPACPI_FAN_2FAN) {
+				tp_features.second_fan = 1;
+				dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN,
+					"secondary fan support enabled\n");
+			}
 		} else {
 			printk(TPACPI_ERR
 			       "ThinkPad ACPI EC access misbehaving, "
@@ -6914,6 +7204,11 @@ static int __init fan_init(struct ibm_init_struct *iibm)
 
 	if (fan_status_access_mode != TPACPI_FAN_NONE ||
 	    fan_control_access_mode != TPACPI_FAN_WR_NONE) {
+		if (tp_features.second_fan) {
+			/* attach second fan tachometer */
+			fan_attributes[ARRAY_SIZE(fan_attributes)-2] =
+					&dev_attr_fan_fan2_input.attr;
+		}
 		rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj,
 					 &fan_attr_group);
 		if (rc < 0)
@@ -7385,6 +7680,24 @@ err_out:
 
 /* Probing */
 
+static bool __pure __init tpacpi_is_fw_digit(const char c)
+{
+	return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z');
+}
+
+/* Most models: xxyTkkWW (#.##c); Ancient 570/600 and -SL lacks (#.##c) */
+static bool __pure __init tpacpi_is_valid_fw_id(const char* const s,
+						const char t)
+{
+	return s && strlen(s) >= 8 &&
+		tpacpi_is_fw_digit(s[0]) &&
+		tpacpi_is_fw_digit(s[1]) &&
+		s[2] == t && s[3] == 'T' &&
+		tpacpi_is_fw_digit(s[4]) &&
+		tpacpi_is_fw_digit(s[5]) &&
+		s[6] == 'W' && s[7] == 'W';
+}
+
 /* returns 0 - probe ok, or < 0 - probe error.
  * Probe ok doesn't mean thinkpad found.
  * On error, kfree() cleanup on tp->* is not performed, caller must do it */
@@ -7411,10 +7724,15 @@ static int __must_check __init get_thinkpad_model_data(
 	tp->bios_version_str = kstrdup(s, GFP_KERNEL);
 	if (s && !tp->bios_version_str)
 		return -ENOMEM;
-	if (!tp->bios_version_str)
+
+	/* Really ancient ThinkPad 240X will fail this, which is fine */
+	if (!tpacpi_is_valid_fw_id(tp->bios_version_str, 'E'))
 		return 0;
+
 	tp->bios_model = tp->bios_version_str[0]
 			 | (tp->bios_version_str[1] << 8);
+	tp->bios_release = (tp->bios_version_str[4] << 8)
+			 | tp->bios_version_str[5];
 
 	/*
 	 * ThinkPad T23 or newer, A31 or newer, R50e or newer,
@@ -7433,8 +7751,21 @@ static int __must_check __init get_thinkpad_model_data(
 			tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL);
 			if (!tp->ec_version_str)
 				return -ENOMEM;
-			tp->ec_model = ec_fw_string[0]
-					| (ec_fw_string[1] << 8);
+
+			if (tpacpi_is_valid_fw_id(ec_fw_string, 'H')) {
+				tp->ec_model = ec_fw_string[0]
+						| (ec_fw_string[1] << 8);
+				tp->ec_release = (ec_fw_string[4] << 8)
+						| ec_fw_string[5];
+			} else {
+				printk(TPACPI_NOTICE
+					"ThinkPad firmware release %s "
+					"doesn't match the known patterns\n",
+					ec_fw_string);
+				printk(TPACPI_NOTICE
+					"please report this to %s\n",
+					TPACPI_MAIL);
+			}
 			break;
 		}
 	}
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 7f207f335bec..ef3a2cd3a7a0 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -287,6 +287,25 @@ static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 				ACPI_DECODE_16);
 }
 
+static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
+						      struct acpi_resource *res)
+{
+	struct acpi_resource_extended_address64 *p = &res->data.ext_address64;
+
+	if (p->producer_consumer == ACPI_PRODUCER)
+		return;
+
+	if (p->resource_type == ACPI_MEMORY_RANGE)
+		pnpacpi_parse_allocated_memresource(dev,
+			p->minimum, p->address_length,
+			p->info.mem.write_protect);
+	else if (p->resource_type == ACPI_IO_RANGE)
+		pnpacpi_parse_allocated_ioresource(dev,
+			p->minimum, p->address_length,
+			p->granularity == 0xfff ? ACPI_DECODE_10 :
+				ACPI_DECODE_16);
+}
+
 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 					      void *data)
 {
@@ -400,8 +419,7 @@ static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
 		break;
 
 	case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
-		if (res->data.ext_address64.producer_consumer == ACPI_PRODUCER)
-			return AE_OK;
+		pnpacpi_parse_allocated_ext_address_space(dev, res);
 		break;
 
 	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
@@ -630,6 +648,28 @@ static __init void pnpacpi_parse_address_option(struct pnp_dev *dev,
 					   IORESOURCE_IO_FIXED);
 }
 
+static __init void pnpacpi_parse_ext_address_option(struct pnp_dev *dev,
+						    unsigned int option_flags,
+						    struct acpi_resource *r)
+{
+	struct acpi_resource_extended_address64 *p = &r->data.ext_address64;
+	unsigned char flags = 0;
+
+	if (p->address_length == 0)
+		return;
+
+	if (p->resource_type == ACPI_MEMORY_RANGE) {
+		if (p->info.mem.write_protect == ACPI_READ_WRITE_MEMORY)
+			flags = IORESOURCE_MEM_WRITEABLE;
+		pnp_register_mem_resource(dev, option_flags, p->minimum,
+					  p->minimum, 0, p->address_length,
+					  flags);
+	} else if (p->resource_type == ACPI_IO_RANGE)
+		pnp_register_port_resource(dev, option_flags, p->minimum,
+					   p->minimum, 0, p->address_length,
+					   IORESOURCE_IO_FIXED);
+}
+
 struct acpipnp_parse_option_s {
 	struct pnp_dev *dev;
 	unsigned int option_flags;
@@ -711,6 +751,7 @@ static __init acpi_status pnpacpi_option_resource(struct acpi_resource *res,
 		break;
 
 	case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
+		pnpacpi_parse_ext_address_option(dev, option_flags, res);
 		break;
 
 	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
@@ -765,6 +806,7 @@ static int pnpacpi_supported_resource(struct acpi_resource *res)
 	case ACPI_RESOURCE_TYPE_ADDRESS16:
 	case ACPI_RESOURCE_TYPE_ADDRESS32:
 	case ACPI_RESOURCE_TYPE_ADDRESS64:
+	case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
 	case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
 		return 1;
 	}