Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6

Conflicts:

	drivers/macintosh/adbhid.c

44 files changed, 2643 insertions, 1004 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 139f41f033d..4875f0149eb 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -2,16 +2,12 @@
 # ACPI Configuration
 #
 
-menu "ACPI (Advanced Configuration and Power Interface) Support"
+menuconfig ACPI
+	bool "ACPI Support (Advanced Configuration and Power Interface) Support"
 	depends on !X86_NUMAQ
 	depends on !X86_VISWS
 	depends on !IA64_HP_SIM
 	depends on IA64 || X86
-	depends on PM
-
-config ACPI
-	bool "ACPI Support"
-	depends on IA64 || X86
 	depends on PCI
 	depends on PM
 	select PNP
@@ -47,52 +43,48 @@ config ACPI
 if ACPI
 
 config ACPI_SLEEP
-	bool "Sleep States"
-	depends on X86 && (!SMP || SUSPEND_SMP)
-	depends on PM
-	default y
-	---help---
-	  This option adds support for ACPI suspend states. 
-
-	  With this option, you will be able to put the system "to sleep". 
-	  Sleep states are low power states for the system and devices. All
-	  of the system operating state is saved to either memory or disk
-	  (depending on the state), to allow the system to resume operation
-	  quickly at your request.
-
-	  Although this option sounds really nifty, barely any of the device
-	  drivers have been converted to the new driver model and hence few
-	  have proper power management support. 
-
-	  This option is not recommended for anyone except those doing driver
-	  power management development.
-
-config ACPI_SLEEP_PROC_FS
 	bool
-	depends on ACPI_SLEEP && PROC_FS
+	depends on PM_SLEEP
 	default y
 
-config ACPI_SLEEP_PROC_SLEEP
-	bool "/proc/acpi/sleep (deprecated)"
-	depends on ACPI_SLEEP_PROC_FS
-	default n
-	---help---
-	  Create /proc/acpi/sleep
-	  Deprecated by /sys/power/state
-
 config ACPI_PROCFS
-	bool "Procfs interface (deprecated)"
-	depends on ACPI
+	bool "Deprecated /proc/acpi files"
+	depends on PROC_FS
+	---help---
+	  For backwards compatibility, this option allows
+	  depricated /proc/acpi/ files to exist, even when
+	  they have been replaced by functions in /sys.
+	  The deprecated files (and their replacements) include:
+
+	  /proc/acpi/sleep (/sys/power/state)
+	  /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
+	  /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
+	  /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
+	  /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
+	  /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
+
+	  This option has no effect on /proc/acpi/ files
+	  and functions which do not yet exist in /sys.
+
+	  Say N to delete /proc/acpi/ files that have moved to /sys/
+
+config ACPI_PROC_EVENT
+	bool "Deprecated /proc/acpi/event support"
+	depends on PROC_FS
 	default y
 	---help---
-	  The Procfs interface for ACPI is made optional for backward compatibility.
-	  As the same functions are duplicated in the sysfs interface
-	  and this proc interface will be removed some time later,
-	  it's marked as deprecated.
-	  ( /proc/acpi/debug_layer && debug_level are deprecated by
-	    /sys/module/acpi/parameters/debug_layer && debug_level.
-	    /proc/acpi/info is deprecated by
-	    /sys/module/acpi/parameters/acpica_version )
+	  A user-space daemon, acpi, typically read /proc/acpi/event
+	  and handled all ACPI sub-system generated events.
+
+	  These events are now delivered to user-space via
+	  either the input layer, or as netlink events.
+
+	  This build option enables the old code for legacy
+	  user-space implementation.  After some time, this will
+	  be moved under CONFIG_ACPI_PROCFS, and then deleted.
+
+	  Say Y here to retain the old behaviour.  Say N if your
+	  user-space is newer than kernel 2.6.23 (September 2007).
 
 config ACPI_AC
 	tristate "AC Adapter"
@@ -124,7 +116,7 @@ config ACPI_BUTTON
 
 config ACPI_VIDEO
 	tristate "Video"
-	depends on X86 && BACKLIGHT_CLASS_DEVICE
+	depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 	help
 	  This driver implement the ACPI Extensions For Display Adapters
 	  for integrated graphics devices on motherboard, as specified in
@@ -280,6 +272,14 @@ config ACPI_DEBUG
 	  of verbosity. Saying Y enables these statements. This will increase
 	  your kernel size by around 50K.
 
+config ACPI_DEBUG_FUNC_TRACE
+	bool "Additionally enable ACPI function tracing"
+	default n
+	depends on ACPI_DEBUG
+	help
+	  ACPI Debug Statements slow down ACPI processing. Function trace
+	  is about half of the penalty and is rarely useful.
+
 config ACPI_EC
 	bool
 	default y
@@ -330,7 +330,6 @@ config ACPI_CONTAINER
 
 config ACPI_HOTPLUG_MEMORY
 	tristate "Memory Hotplug"
-	depends on ACPI
 	depends on MEMORY_HOTPLUG
 	default n
 	help
@@ -359,5 +358,3 @@ config ACPI_SBS
 	  to today's ACPI "Control Method" battery.
 
 endif	# ACPI
-
-endmenu
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 37c7dc4f9fe..26d70702b31 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -34,7 +34,6 @@
 
 #define ACPI_AC_COMPONENT		0x00020000
 #define ACPI_AC_CLASS			"ac_adapter"
-#define ACPI_AC_HID 			"ACPI0003"
 #define ACPI_AC_DEVICE_NAME		"AC Adapter"
 #define ACPI_AC_FILE_STATE		"state"
 #define ACPI_AC_NOTIFY_STATUS		0x80
@@ -56,10 +55,16 @@ static int acpi_ac_add(struct acpi_device *device);
 static int acpi_ac_remove(struct acpi_device *device, int type);
 static int acpi_ac_open_fs(struct inode *inode, struct file *file);
 
+const static struct acpi_device_id ac_device_ids[] = {
+	{"ACPI0003", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, ac_device_ids);
+
 static struct acpi_driver acpi_ac_driver = {
 	.name = "ac",
 	.class = ACPI_AC_CLASS,
-	.ids = ACPI_AC_HID,
+	.ids = ac_device_ids,
 	.ops = {
 		.add = acpi_ac_add,
 		.remove = acpi_ac_remove,
@@ -199,7 +204,10 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data)
 	case ACPI_NOTIFY_BUS_CHECK:
 	case ACPI_NOTIFY_DEVICE_CHECK:
 		acpi_ac_get_state(ac);
-		acpi_bus_generate_event(device, event, (u32) ac->state);
+		acpi_bus_generate_proc_event(device, event, (u32) ac->state);
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  device->dev.bus_id, event,
+						  (u32) ac->state);
 		break;
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index e65628a0308..5f1127ad5a9 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -53,10 +53,16 @@ static int acpi_memory_device_add(struct acpi_device *device);
 static int acpi_memory_device_remove(struct acpi_device *device, int type);
 static int acpi_memory_device_start(struct acpi_device *device);
 
+static const struct acpi_device_id memory_device_ids[] = {
+	{ACPI_MEMORY_DEVICE_HID, 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, memory_device_ids);
+
 static struct acpi_driver acpi_memory_device_driver = {
 	.name = "acpi_memhotplug",
 	.class = ACPI_MEMORY_DEVICE_CLASS,
-	.ids = ACPI_MEMORY_DEVICE_HID,
+	.ids = memory_device_ids,
 	.ops = {
 		.add = acpi_memory_device_add,
 		.remove = acpi_memory_device_remove,
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index 3cd79caad70..d915fec9bf6 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -56,7 +56,6 @@
 #define ACPI_HOTK_NAME          "Asus Laptop ACPI Extras Driver"
 #define ACPI_HOTK_CLASS         "hotkey"
 #define ACPI_HOTK_DEVICE_NAME   "Hotkey"
-#define ACPI_HOTK_HID           "ATK0100"
 
 /*
  * Some events we use, same for all Asus
@@ -426,14 +425,20 @@ static struct acpi_table_header *asus_info;
 static struct asus_hotk *hotk;
 
 /*
- * The hotkey driver declaration
+ * The hotkey driver and autoloading declaration
  */
 static int asus_hotk_add(struct acpi_device *device);
 static int asus_hotk_remove(struct acpi_device *device, int type);
+static const struct acpi_device_id asus_device_ids[] = {
+	{"ATK0100", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, asus_device_ids);
+
 static struct acpi_driver asus_hotk_driver = {
 	.name = "asus_acpi",
 	.class = ACPI_HOTK_CLASS,
-	.ids = ACPI_HOTK_HID,
+	.ids = asus_device_ids,
 	.ops = {
 		.add = asus_hotk_add,
 		.remove = asus_hotk_remove,
@@ -1064,7 +1069,7 @@ static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
 		hotk->brightness = (event & ~((u32) BR_DOWN));
 	}
 
-	acpi_bus_generate_event(hotk->device, event,
+	acpi_bus_generate_proc_event(hotk->device, event,
 				hotk->event_count[event % 128]++);
 
 	return;
@@ -1187,6 +1192,7 @@ static int asus_hotk_get_info(void)
 			break;
 		default:
 			kfree(model);
+			model = NULL;
 			break;
 		}
 	}
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index e64c76c8b72..9b2c0f74f86 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -41,23 +41,31 @@
 
 #define ACPI_BATTERY_COMPONENT		0x00040000
 #define ACPI_BATTERY_CLASS		"battery"
-#define ACPI_BATTERY_HID		"PNP0C0A"
 #define ACPI_BATTERY_DEVICE_NAME	"Battery"
-#define ACPI_BATTERY_FILE_INFO		"info"
-#define ACPI_BATTERY_FILE_STATUS	"state"
-#define ACPI_BATTERY_FILE_ALARM		"alarm"
 #define ACPI_BATTERY_NOTIFY_STATUS	0x80
 #define ACPI_BATTERY_NOTIFY_INFO	0x81
 #define ACPI_BATTERY_UNITS_WATTS	"mW"
 #define ACPI_BATTERY_UNITS_AMPS		"mA"
 
 #define _COMPONENT		ACPI_BATTERY_COMPONENT
+
+#define ACPI_BATTERY_UPDATE_TIME	0
+
+#define ACPI_BATTERY_NONE_UPDATE	0
+#define ACPI_BATTERY_EASY_UPDATE	1
+#define ACPI_BATTERY_INIT_UPDATE	2
+
 ACPI_MODULE_NAME("battery");
 
 MODULE_AUTHOR("Paul Diefenbaugh");
 MODULE_DESCRIPTION("ACPI Battery Driver");
 MODULE_LICENSE("GPL");
 
+static unsigned int update_time = ACPI_BATTERY_UPDATE_TIME;
+
+/* 0 - every time, > 0 - by update_time */
+module_param(update_time, uint, 0644);
+
 extern struct proc_dir_entry *acpi_lock_battery_dir(void);
 extern void *acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir);
 
@@ -65,10 +73,16 @@ static int acpi_battery_add(struct acpi_device *device);
 static int acpi_battery_remove(struct acpi_device *device, int type);
 static int acpi_battery_resume(struct acpi_device *device);
 
+static const struct acpi_device_id battery_device_ids[] = {
+	{"PNP0C0A", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, battery_device_ids);
+
 static struct acpi_driver acpi_battery_driver = {
 	.name = "battery",
 	.class = ACPI_BATTERY_CLASS,
-	.ids = ACPI_BATTERY_HID,
+	.ids = battery_device_ids,
 	.ops = {
 		.add = acpi_battery_add,
 		.resume = acpi_battery_resume,
@@ -76,7 +90,7 @@ static struct acpi_driver acpi_battery_driver = {
 		},
 };
 
-struct acpi_battery_status {
+struct acpi_battery_state {
 	acpi_integer state;
 	acpi_integer present_rate;
 	acpi_integer remaining_capacity;
@@ -99,33 +113,111 @@ struct acpi_battery_info {
 	acpi_string oem_info;
 };
 
-struct acpi_battery_flags {
-	u8 present:1;		/* Bay occupied? */
-	u8 power_unit:1;	/* 0=watts, 1=apms */
-	u8 alarm:1;		/* _BTP present? */
-	u8 reserved:5;
+enum acpi_battery_files{
+	ACPI_BATTERY_INFO = 0,
+	ACPI_BATTERY_STATE,
+	ACPI_BATTERY_ALARM,
+	ACPI_BATTERY_NUMFILES,
 };
 
-struct acpi_battery_trips {
-	unsigned long warning;
-	unsigned long low;
+struct acpi_battery_flags {
+	u8 battery_present_prev;
+	u8 alarm_present;
+	u8 init_update;
+	u8 update[ACPI_BATTERY_NUMFILES];
+	u8 power_unit;
 };
 
 struct acpi_battery {
-	struct acpi_device * device;
+	struct mutex mutex;
+	struct acpi_device *device;
 	struct acpi_battery_flags flags;
-	struct acpi_battery_trips trips;
+	struct acpi_buffer bif_data;
+	struct acpi_buffer bst_data;
 	unsigned long alarm;
-	struct acpi_battery_info *info;
+	unsigned long update_time[ACPI_BATTERY_NUMFILES];
 };
 
+inline int acpi_battery_present(struct acpi_battery *battery)
+{
+	return battery->device->status.battery_present;
+}
+inline char *acpi_battery_power_units(struct acpi_battery *battery)
+{
+	if (battery->flags.power_unit)
+		return ACPI_BATTERY_UNITS_AMPS;
+	else
+		return ACPI_BATTERY_UNITS_WATTS;
+}
+
+inline acpi_handle acpi_battery_handle(struct acpi_battery *battery)
+{
+	return battery->device->handle;
+}
+
 /* --------------------------------------------------------------------------
                                Battery Management
    -------------------------------------------------------------------------- */
 
-static int
-acpi_battery_get_info(struct acpi_battery *battery,
-		      struct acpi_battery_info **bif)
+static void acpi_battery_check_result(struct acpi_battery *battery, int result)
+{
+	if (!battery)
+		return;
+
+	if (result) {
+		battery->flags.init_update = 1;
+	}
+}
+
+static int acpi_battery_extract_package(struct acpi_battery *battery,
+					union acpi_object *package,
+					struct acpi_buffer *format,
+					struct acpi_buffer *data,
+					char *package_name)
+{
+	acpi_status status = AE_OK;
+	struct acpi_buffer data_null = { 0, NULL };
+
+	status = acpi_extract_package(package, format, &data_null);
+	if (status != AE_BUFFER_OVERFLOW) {
+		ACPI_EXCEPTION((AE_INFO, status, "Extracting size %s",
+				package_name));
+		return -ENODEV;
+	}
+
+	if (data_null.length != data->length) {
+		kfree(data->pointer);
+		data->pointer = kzalloc(data_null.length, GFP_KERNEL);
+		if (!data->pointer) {
+			ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, "kzalloc()"));
+			return -ENOMEM;
+		}
+		data->length = data_null.length;
+	}
+
+	status = acpi_extract_package(package, format, data);
+	if (ACPI_FAILURE(status)) {
+		ACPI_EXCEPTION((AE_INFO, status, "Extracting %s",
+				package_name));
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int acpi_battery_get_status(struct acpi_battery *battery)
+{
+	int result = 0;
+
+	result = acpi_bus_get_status(battery->device);
+	if (result) {
+		ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Evaluating _STA"));
+		return -ENODEV;
+	}
+	return result;
+}
+
+static int acpi_battery_get_info(struct acpi_battery *battery)
 {
 	int result = 0;
 	acpi_status status = 0;
@@ -133,16 +225,20 @@ acpi_battery_get_info(struct acpi_battery *battery,
 	struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BIF),
 		ACPI_BATTERY_FORMAT_BIF
 	};
-	struct acpi_buffer data = { 0, NULL };
 	union acpi_object *package = NULL;
+	struct acpi_buffer *data = NULL;
+	struct acpi_battery_info *bif = NULL;
 
+	battery->update_time[ACPI_BATTERY_INFO] = get_seconds();
 
-	if (!battery || !bif)
-		return -EINVAL;
+	if (!acpi_battery_present(battery))
+		return 0;
 
-	/* Evalute _BIF */
+	/* Evaluate _BIF */
 
-	status = acpi_evaluate_object(battery->device->handle, "_BIF", NULL, &buffer);
+	status =
+	    acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", NULL,
+				 &buffer);
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF"));
 		return -ENODEV;
@@ -150,41 +246,29 @@ acpi_battery_get_info(struct acpi_battery *battery,
 
 	package = buffer.pointer;
 
-	/* Extract Package Data */
-
-	status = acpi_extract_package(package, &format, &data);
-	if (status != AE_BUFFER_OVERFLOW) {
-		ACPI_EXCEPTION((AE_INFO, status, "Extracting _BIF"));
-		result = -ENODEV;
-		goto end;
-	}
+	data = &battery->bif_data;
 
-	data.pointer = kzalloc(data.length, GFP_KERNEL);
-	if (!data.pointer) {
-		result = -ENOMEM;
-		goto end;
-	}
+	/* Extract Package Data */
 
-	status = acpi_extract_package(package, &format, &data);
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Extracting _BIF"));
-		kfree(data.pointer);
-		result = -ENODEV;
+	result =
+	    acpi_battery_extract_package(battery, package, &format, data,
+					 "_BIF");
+	if (result)
 		goto end;
-	}
 
       end:
+
 	kfree(buffer.pointer);
 
-	if (!result)
-		(*bif) = data.pointer;
+	if (!result) {
+		bif = data->pointer;
+		battery->flags.power_unit = bif->power_unit;
+	}
 
 	return result;
 }
 
-static int
-acpi_battery_get_status(struct acpi_battery *battery,
-			struct acpi_battery_status **bst)
+static int acpi_battery_get_state(struct acpi_battery *battery)
 {
 	int result = 0;
 	acpi_status status = 0;
@@ -192,16 +276,19 @@ acpi_battery_get_status(struct acpi_battery *battery,
 	struct acpi_buffer format = { sizeof(ACPI_BATTERY_FORMAT_BST),
 		ACPI_BATTERY_FORMAT_BST
 	};
-	struct acpi_buffer data = { 0, NULL };
 	union acpi_object *package = NULL;
+	struct acpi_buffer *data = NULL;
 
+	battery->update_time[ACPI_BATTERY_STATE] = get_seconds();
 
-	if (!battery || !bst)
-		return -EINVAL;
+	if (!acpi_battery_present(battery))
+		return 0;
 
-	/* Evalute _BST */
+	/* Evaluate _BST */
 
-	status = acpi_evaluate_object(battery->device->handle, "_BST", NULL, &buffer);
+	status =
+	    acpi_evaluate_object(acpi_battery_handle(battery), "_BST", NULL,
+				 &buffer);
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST"));
 		return -ENODEV;
@@ -209,55 +296,49 @@ acpi_battery_get_status(struct acpi_battery *battery,
 
 	package = buffer.pointer;
 
-	/* Extract Package Data */
+	data = &battery->bst_data;
 
-	status = acpi_extract_package(package, &format, &data);
-	if (status != AE_BUFFER_OVERFLOW) {
-		ACPI_EXCEPTION((AE_INFO, status, "Extracting _BST"));
-		result = -ENODEV;
-		goto end;
-	}
-
-	data.pointer = kzalloc(data.length, GFP_KERNEL);
-	if (!data.pointer) {
-		result = -ENOMEM;
-		goto end;
-	}
+	/* Extract Package Data */
 
-	status = acpi_extract_package(package, &format, &data);
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Extracting _BST"));
-		kfree(data.pointer);
-		result = -ENODEV;
+	result =
+	    acpi_battery_extract_package(battery, package, &format, data,
+					 "_BST");
+	if (result)
 		goto end;
-	}
 
       end:
 	kfree(buffer.pointer);
 
-	if (!result)
-		(*bst) = data.pointer;
-
 	return result;
 }
 
-static int
-acpi_battery_set_alarm(struct acpi_battery *battery, unsigned long alarm)
+static int acpi_battery_get_alarm(struct acpi_battery *battery)
+{
+	battery->update_time[ACPI_BATTERY_ALARM] = get_seconds();
+
+	return 0;
+}
+
+static int acpi_battery_set_alarm(struct acpi_battery *battery,
+				  unsigned long alarm)
 {
 	acpi_status status = 0;
 	union acpi_object arg0 = { ACPI_TYPE_INTEGER };
 	struct acpi_object_list arg_list = { 1, &arg0 };
 
+	battery->update_time[ACPI_BATTERY_ALARM] = get_seconds();
 
-	if (!battery)
-		return -EINVAL;
+	if (!acpi_battery_present(battery))
+		return -ENODEV;
 
-	if (!battery->flags.alarm)
+	if (!battery->flags.alarm_present)
 		return -ENODEV;
 
 	arg0.integer.value = alarm;
 
-	status = acpi_evaluate_object(battery->device->handle, "_BTP", &arg_list, NULL);
+	status =
+	    acpi_evaluate_object(acpi_battery_handle(battery), "_BTP",
+				 &arg_list, NULL);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
@@ -268,65 +349,114 @@ acpi_battery_set_alarm(struct acpi_battery *battery, unsigned long alarm)
 	return 0;
 }
 
-static int acpi_battery_check(struct acpi_battery *battery)
+static int acpi_battery_init_alarm(struct acpi_battery *battery)
 {
 	int result = 0;
 	acpi_status status = AE_OK;
 	acpi_handle handle = NULL;
-	struct acpi_device *device = NULL;
-	struct acpi_battery_info *bif = NULL;
-
+	struct acpi_battery_info *bif = battery->bif_data.pointer;
+	unsigned long alarm = battery->alarm;
 
-	if (!battery)
-		return -EINVAL;
+	/* See if alarms are supported, and if so, set default */
 
-	device = battery->device;
+	status = acpi_get_handle(acpi_battery_handle(battery), "_BTP", &handle);
+	if (ACPI_SUCCESS(status)) {
+		battery->flags.alarm_present = 1;
+		if (!alarm && bif) {
+			alarm = bif->design_capacity_warning;
+		}
+		result = acpi_battery_set_alarm(battery, alarm);
+		if (result)
+			goto end;
+	} else {
+		battery->flags.alarm_present = 0;
+	}
 
-	result = acpi_bus_get_status(device);
-	if (result)
-		return result;
+      end:
 
-	/* Insertion? */
+	return result;
+}
 
-	if (!battery->flags.present && device->status.battery_present) {
+static int acpi_battery_init_update(struct acpi_battery *battery)
+{
+	int result = 0;
 
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Battery inserted\n"));
+	result = acpi_battery_get_status(battery);
+	if (result)
+		return result;
 
-		/* Evalute _BIF to get certain static information */
+	battery->flags.battery_present_prev = acpi_battery_present(battery);
 
-		result = acpi_battery_get_info(battery, &bif);
+	if (acpi_battery_present(battery)) {
+		result = acpi_battery_get_info(battery);
+		if (result)
+			return result;
+		result = acpi_battery_get_state(battery);
 		if (result)
 			return result;
 
-		battery->flags.power_unit = bif->power_unit;
-		battery->trips.warning = bif->design_capacity_warning;
-		battery->trips.low = bif->design_capacity_low;
-		kfree(bif);
+		acpi_battery_init_alarm(battery);
+	}
+
+	return result;
+}
 
-		/* See if alarms are supported, and if so, set default */
+static int acpi_battery_update(struct acpi_battery *battery,
+			       int update, int *update_result_ptr)
+{
+	int result = 0;
+	int update_result = ACPI_BATTERY_NONE_UPDATE;
 
-		status = acpi_get_handle(battery->device->handle, "_BTP", &handle);
-		if (ACPI_SUCCESS(status)) {
-			battery->flags.alarm = 1;
-			acpi_battery_set_alarm(battery, battery->trips.warning);
+	if (!acpi_battery_present(battery)) {
+		update = 1;
+	}
+
+	if (battery->flags.init_update) {
+		result = acpi_battery_init_update(battery);
+		if (result)
+			goto end;
+		update_result = ACPI_BATTERY_INIT_UPDATE;
+	} else if (update) {
+		result = acpi_battery_get_status(battery);
+		if (result)
+			goto end;
+		if ((!battery->flags.battery_present_prev & acpi_battery_present(battery))
+		    || (battery->flags.battery_present_prev & !acpi_battery_present(battery))) {
+			result = acpi_battery_init_update(battery);
+			if (result)
+				goto end;
+			update_result = ACPI_BATTERY_INIT_UPDATE;
+		} else {
+			update_result = ACPI_BATTERY_EASY_UPDATE;
 		}
 	}
 
-	/* Removal? */
+      end:
 
-	else if (battery->flags.present && !device->status.battery_present) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Battery removed\n"));
-	}
+	battery->flags.init_update = (result != 0);
 
-	battery->flags.present = device->status.battery_present;
+	*update_result_ptr = update_result;
 
 	return result;
 }
 
-static void acpi_battery_check_present(struct acpi_battery *battery)
+static void acpi_battery_notify_update(struct acpi_battery *battery)
 {
-	if (!battery->flags.present) {
-		acpi_battery_check(battery);
+	acpi_battery_get_status(battery);
+
+	if (battery->flags.init_update) {
+		return;
+	}
+
+	if ((!battery->flags.battery_present_prev &
+	     acpi_battery_present(battery)) ||
+	    (battery->flags.battery_present_prev &
+	     !acpi_battery_present(battery))) {
+		battery->flags.init_update = 1;
+	} else {
+		battery->flags.update[ACPI_BATTERY_INFO] = 1;
+		battery->flags.update[ACPI_BATTERY_STATE] = 1;
+		battery->flags.update[ACPI_BATTERY_ALARM] = 1;
 	}
 }
 
@@ -335,37 +465,33 @@ static void acpi_battery_check_present(struct acpi_battery *battery)
    -------------------------------------------------------------------------- */
 
 static struct proc_dir_entry *acpi_battery_dir;
-static int acpi_battery_read_info(struct seq_file *seq, void *offset)
+
+static int acpi_battery_print_info(struct seq_file *seq, int result)
 {
-	int result = 0;
 	struct acpi_battery *battery = seq->private;
 	struct acpi_battery_info *bif = NULL;
 	char *units = "?";
 
-
-	if (!battery)
+	if (result)
 		goto end;
 
-	acpi_battery_check_present(battery);
-
-	if (battery->flags.present)
+	if (acpi_battery_present(battery))
 		seq_printf(seq, "present:                 yes\n");
 	else {
 		seq_printf(seq, "present:                 no\n");
 		goto end;
 	}
 
-	/* Battery Info (_BIF) */
-
-	result = acpi_battery_get_info(battery, &bif);
-	if (result || !bif) {
-		seq_printf(seq, "ERROR: Unable to read battery information\n");
+	bif = battery->bif_data.pointer;
+	if (!bif) {
+		ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BIF buffer is NULL"));
+		result = -ENODEV;
 		goto end;
 	}
 
-	units =
-	    bif->
-	    power_unit ? ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS;
+	/* Battery Units */
+
+	units = acpi_battery_power_units(battery);
 
 	if (bif->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
 		seq_printf(seq, "design capacity:         unknown\n");
@@ -396,7 +522,6 @@ static int acpi_battery_read_info(struct seq_file *seq, void *offset)
 	else
 		seq_printf(seq, "design voltage:          %d mV\n",
 			   (u32) bif->design_voltage);
-
 	seq_printf(seq, "design capacity warning: %d %sh\n",
 		   (u32) bif->design_capacity_warning, units);
 	seq_printf(seq, "design capacity low:     %d %sh\n",
@@ -411,50 +536,40 @@ static int acpi_battery_read_info(struct seq_file *seq, void *offset)
 	seq_printf(seq, "OEM info:                %s\n", bif->oem_info);
 
       end:
-	kfree(bif);
 
-	return 0;
-}
+	if (result)
+		seq_printf(seq, "ERROR: Unable to read battery info\n");
 
-static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
-{
-	return single_open(file, acpi_battery_read_info, PDE(inode)->data);
+	return result;
 }
 
-static int acpi_battery_read_state(struct seq_file *seq, void *offset)
+static int acpi_battery_print_state(struct seq_file *seq, int result)
 {
-	int result = 0;
 	struct acpi_battery *battery = seq->private;
-	struct acpi_battery_status *bst = NULL;
+	struct acpi_battery_state *bst = NULL;
 	char *units = "?";
 
-
-	if (!battery)
+	if (result)
 		goto end;
 
-	acpi_battery_check_present(battery);
-
-	if (battery->flags.present)
+	if (acpi_battery_present(battery))
 		seq_printf(seq, "present:                 yes\n");
 	else {
 		seq_printf(seq, "present:                 no\n");
 		goto end;
 	}
 
-	/* Battery Units */
-
-	units =
-	    battery->flags.
-	    power_unit ? ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS;
-
-	/* Battery Status (_BST) */
-
-	result = acpi_battery_get_status(battery, &bst);
-	if (result || !bst) {
-		seq_printf(seq, "ERROR: Unable to read battery status\n");
+	bst = battery->bst_data.pointer;
+	if (!bst) {
+		ACPI_EXCEPTION((AE_INFO, AE_ERROR, "BST buffer is NULL"));
+		result = -ENODEV;
 		goto end;
 	}
 
+	/* Battery Units */
+
+	units = acpi_battery_power_units(battery);
+
 	if (!(bst->state & 0x04))
 		seq_printf(seq, "capacity state:          ok\n");
 	else
@@ -490,48 +605,43 @@ static int acpi_battery_read_state(struct seq_file *seq, void *offset)
 			   (u32) bst->present_voltage);
 
       end:
-	kfree(bst);
 
-	return 0;
-}
+	if (result) {
+		seq_printf(seq, "ERROR: Unable to read battery state\n");
+	}
 
-static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
-{
-	return single_open(file, acpi_battery_read_state, PDE(inode)->data);
+	return result;
 }
 
-static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
+static int acpi_battery_print_alarm(struct seq_file *seq, int result)
 {
 	struct acpi_battery *battery = seq->private;
 	char *units = "?";
 
-
-	if (!battery)
+	if (result)
 		goto end;
 
-	acpi_battery_check_present(battery);
-
-	if (!battery->flags.present) {
+	if (!acpi_battery_present(battery)) {
 		seq_printf(seq, "present:                 no\n");
 		goto end;
 	}
 
 	/* Battery Units */
 
-	units =
-	    battery->flags.
-	    power_unit ? ACPI_BATTERY_UNITS_AMPS : ACPI_BATTERY_UNITS_WATTS;
-
-	/* Battery Alarm */
+	units = acpi_battery_power_units(battery);
 
 	seq_printf(seq, "alarm:                   ");
 	if (!battery->alarm)
 		seq_printf(seq, "unsupported\n");
 	else
-		seq_printf(seq, "%d %sh\n", (u32) battery->alarm, units);
+		seq_printf(seq, "%lu %sh\n", battery->alarm, units);
 
       end:
-	return 0;
+
+	if (result)
+		seq_printf(seq, "ERROR: Unable to read battery alarm\n");
+
+	return result;
 }
 
 static ssize_t
@@ -543,27 +653,113 @@ acpi_battery_write_alarm(struct file *file,
 	char alarm_string[12] = { '\0' };
 	struct seq_file *m = file->private_data;
 	struct acpi_battery *battery = m->private;
-
+	int update_result = ACPI_BATTERY_NONE_UPDATE;
 
 	if (!battery || (count > sizeof(alarm_string) - 1))
 		return -EINVAL;
 
-	acpi_battery_check_present(battery);
+	mutex_lock(&battery->mutex);
 
-	if (!battery->flags.present)
-		return -ENODEV;
+	result = acpi_battery_update(battery, 1, &update_result);
+	if (result) {
+		result = -ENODEV;
+		goto end;
+	}
 
-	if (copy_from_user(alarm_string, buffer, count))
-		return -EFAULT;
+	if (!acpi_battery_present(battery)) {
+		result = -ENODEV;
+		goto end;
+	}
+
+	if (copy_from_user(alarm_string, buffer, count)) {
+		result = -EFAULT;
+		goto end;
+	}
 
 	alarm_string[count] = '\0';
 
 	result = acpi_battery_set_alarm(battery,
 					simple_strtoul(alarm_string, NULL, 0));
 	if (result)
-		return result;
+		goto end;
+
+      end:
+
+	acpi_battery_check_result(battery, result);
+
+	if (!result)
+		result = count;
+
+	mutex_unlock(&battery->mutex);
+
+	return result;
+}
+
+typedef int(*print_func)(struct seq_file *seq, int result);
+typedef int(*get_func)(struct acpi_battery *battery);
+
+static struct acpi_read_mux {
+	print_func print;
+	get_func get;
+} acpi_read_funcs[ACPI_BATTERY_NUMFILES] = {
+	{.get = acpi_battery_get_info, .print = acpi_battery_print_info},
+	{.get = acpi_battery_get_state, .print = acpi_battery_print_state},
+	{.get = acpi_battery_get_alarm, .print = acpi_battery_print_alarm},
+};
+
+static int acpi_battery_read(int fid, struct seq_file *seq)
+{
+	struct acpi_battery *battery = seq->private;
+	int result = 0;
+	int update_result = ACPI_BATTERY_NONE_UPDATE;
+	int update = 0;
+
+	mutex_lock(&battery->mutex);
+
+	update = (get_seconds() - battery->update_time[fid] >= update_time);
+	update = (update | battery->flags.update[fid]);
+
+	result = acpi_battery_update(battery, update, &update_result);
+	if (result)
+		goto end;
+
+	if (update_result == ACPI_BATTERY_EASY_UPDATE) {
+		result = acpi_read_funcs[fid].get(battery);
+		if (result)
+			goto end;
+	}
+
+      end:
+	result = acpi_read_funcs[fid].print(seq, result);
+	acpi_battery_check_result(battery, result);
+	battery->flags.update[fid] = result;
+	mutex_unlock(&battery->mutex);
+	return result;
+}
+
+static int acpi_battery_read_info(struct seq_file *seq, void *offset)
+{
+	return acpi_battery_read(ACPI_BATTERY_INFO, seq);
+}
+
+static int acpi_battery_read_state(struct seq_file *seq, void *offset)
+{
+	return acpi_battery_read(ACPI_BATTERY_STATE, seq);
+}
+
+static int acpi_battery_read_alarm(struct seq_file *seq, void *offset)
+{
+	return acpi_battery_read(ACPI_BATTERY_ALARM, seq);
+}
 
-	return count;
+static int acpi_battery_info_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_battery_read_info, PDE(inode)->data);
+}
+
+static int acpi_battery_state_open_fs(struct inode *inode, struct file *file)
+{
+	return single_open(file, acpi_battery_read_state, PDE(inode)->data);
 }
 
 static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
@@ -571,35 +767,51 @@ static int acpi_battery_alarm_open_fs(struct inode *inode, struct file *file)
 	return single_open(file, acpi_battery_read_alarm, PDE(inode)->data);
 }
 
-static const struct file_operations acpi_battery_info_ops = {
+static struct battery_file {
+	struct file_operations ops;
+	mode_t mode;
+	char *name;
+} acpi_battery_file[] = {
+	{
+	.name = "info",
+	.mode = S_IRUGO,
+	.ops = {
 	.open = acpi_battery_info_open_fs,
 	.read = seq_read,
 	.llseek = seq_lseek,
 	.release = single_release,
 	.owner = THIS_MODULE,
-};
-
-static const struct file_operations acpi_battery_state_ops = {
+	},
+	},
+	{
+	.name = "state",
+	.mode = S_IRUGO,
+	.ops = {
 	.open = acpi_battery_state_open_fs,
 	.read = seq_read,
 	.llseek = seq_lseek,
 	.release = single_release,
 	.owner = THIS_MODULE,
-};
-
-static const struct file_operations acpi_battery_alarm_ops = {
+	},
+	},
+	{
+	.name = "alarm",
+	.mode = S_IFREG | S_IRUGO | S_IWUSR,
+	.ops = {
 	.open = acpi_battery_alarm_open_fs,
 	.read = seq_read,
 	.write = acpi_battery_write_alarm,
 	.llseek = seq_lseek,
 	.release = single_release,
 	.owner = THIS_MODULE,
+	},
+	},
 };
 
 static int acpi_battery_add_fs(struct acpi_device *device)
 {
 	struct proc_dir_entry *entry = NULL;
-
+	int i;
 
 	if (!acpi_device_dir(device)) {
 		acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
@@ -609,38 +821,16 @@ static int acpi_battery_add_fs(struct acpi_device *device)
 		acpi_device_dir(device)->owner = THIS_MODULE;
 	}
 
-	/* 'info' [R] */
-	entry = create_proc_entry(ACPI_BATTERY_FILE_INFO,
-				  S_IRUGO, acpi_device_dir(device));
-	if (!entry)
-		return -ENODEV;
-	else {
-		entry->proc_fops = &acpi_battery_info_ops;
-		entry->data = acpi_driver_data(device);
-		entry->owner = THIS_MODULE;
-	}
-
-	/* 'status' [R] */
-	entry = create_proc_entry(ACPI_BATTERY_FILE_STATUS,
-				  S_IRUGO, acpi_device_dir(device));
-	if (!entry)
-		return -ENODEV;
-	else {
-		entry->proc_fops = &acpi_battery_state_ops;
-		entry->data = acpi_driver_data(device);
-		entry->owner = THIS_MODULE;
-	}
-
-	/* 'alarm' [R/W] */
-	entry = create_proc_entry(ACPI_BATTERY_FILE_ALARM,
-				  S_IFREG | S_IRUGO | S_IWUSR,
-				  acpi_device_dir(device));
-	if (!entry)
-		return -ENODEV;
-	else {
-		entry->proc_fops = &acpi_battery_alarm_ops;
-		entry->data = acpi_driver_data(device);
-		entry->owner = THIS_MODULE;
+	for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) {
+		entry = create_proc_entry(acpi_battery_file[i].name,
+				  acpi_battery_file[i].mode, acpi_device_dir(device));
+		if (!entry)
+			return -ENODEV;
+		else {
+			entry->proc_fops = &acpi_battery_file[i].ops;
+			entry->data = acpi_driver_data(device);
+			entry->owner = THIS_MODULE;
+		}
 	}
 
 	return 0;
@@ -648,15 +838,12 @@ static int acpi_battery_add_fs(struct acpi_device *device)
 
 static int acpi_battery_remove_fs(struct acpi_device *device)
 {
-
+	int i;
 	if (acpi_device_dir(device)) {
-		remove_proc_entry(ACPI_BATTERY_FILE_ALARM,
-				  acpi_device_dir(device));
-		remove_proc_entry(ACPI_BATTERY_FILE_STATUS,
+		for (i = 0; i < ACPI_BATTERY_NUMFILES; ++i) {
+			remove_proc_entry(acpi_battery_file[i].name,
 				  acpi_device_dir(device));
-		remove_proc_entry(ACPI_BATTERY_FILE_INFO,
-				  acpi_device_dir(device));
-
+		}
 		remove_proc_entry(acpi_device_bid(device), acpi_battery_dir);
 		acpi_device_dir(device) = NULL;
 	}
@@ -673,7 +860,6 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
 	struct acpi_battery *battery = data;
 	struct acpi_device *device = NULL;
 
-
 	if (!battery)
 		return;
 
@@ -684,8 +870,13 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data)
 	case ACPI_BATTERY_NOTIFY_INFO:
 	case ACPI_NOTIFY_BUS_CHECK:
 	case ACPI_NOTIFY_DEVICE_CHECK:
-		acpi_battery_check(battery);
-		acpi_bus_generate_event(device, event, battery->flags.present);
+		device = battery->device;
+		acpi_battery_notify_update(battery);
+		acpi_bus_generate_proc_event(device, event,
+					acpi_battery_present(battery));
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  device->dev.bus_id, event,
+						  acpi_battery_present(battery));
 		break;
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -702,7 +893,6 @@ static int acpi_battery_add(struct acpi_device *device)
 	acpi_status status = 0;
 	struct acpi_battery *battery = NULL;
 
-
 	if (!device)
 		return -EINVAL;
 
@@ -710,15 +900,21 @@ static int acpi_battery_add(struct acpi_device *device)
 	if (!battery)
 		return -ENOMEM;
 
+	mutex_init(&battery->mutex);
+
+	mutex_lock(&battery->mutex);
+
 	battery->device = device;
 	strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
 	strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
 	acpi_driver_data(device) = battery;
 
-	result = acpi_battery_check(battery);
+	result = acpi_battery_get_status(battery);
 	if (result)
 		goto end;
 
+	battery->flags.init_update = 1;
+
 	result = acpi_battery_add_fs(device);
 	if (result)
 		goto end;
@@ -727,6 +923,7 @@ static int acpi_battery_add(struct acpi_device *device)
 					     ACPI_ALL_NOTIFY,
 					     acpi_battery_notify, battery);
 	if (ACPI_FAILURE(status)) {
+		ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler"));
 		result = -ENODEV;
 		goto end;
 	}
@@ -736,11 +933,14 @@ static int acpi_battery_add(struct acpi_device *device)
 	       device->status.battery_present ? "present" : "absent");
 
       end:
+
 	if (result) {
 		acpi_battery_remove_fs(device);
 		kfree(battery);
 	}
 
+	mutex_unlock(&battery->mutex);
+
 	return result;
 }
 
@@ -749,18 +949,27 @@ 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);
 
+	mutex_lock(&battery->mutex);
+
 	status = acpi_remove_notify_handler(device->handle,
 					    ACPI_ALL_NOTIFY,
 					    acpi_battery_notify);
 
 	acpi_battery_remove_fs(device);
 
+	kfree(battery->bif_data.pointer);
+
+	kfree(battery->bst_data.pointer);
+
+	mutex_unlock(&battery->mutex);
+
+	mutex_destroy(&battery->mutex);
+
 	kfree(battery);
 
 	return 0;
@@ -775,7 +984,10 @@ static int acpi_battery_resume(struct acpi_device *device)
 		return -EINVAL;
 
 	battery = device->driver_data;
-	return acpi_battery_check(battery);
+
+	battery->flags.init_update = 1;
+
+	return 0;
 }
 
 static int __init acpi_battery_init(void)
@@ -800,7 +1012,6 @@ static int __init acpi_battery_init(void)
 
 static void __exit acpi_battery_exit(void)
 {
-
 	acpi_bus_unregister_driver(&acpi_battery_driver);
 
 	acpi_unlock_battery_dir(acpi_battery_dir);
diff --git a/drivers/acpi/bay.c b/drivers/acpi/bay.c
index fb3f31b5e69..6daf6088ac8 100644
--- a/drivers/acpi/bay.c
+++ b/drivers/acpi/bay.c
@@ -288,6 +288,11 @@ static int bay_add(acpi_handle handle, int id)
 	new_bay->pdev = pdev;
 	platform_set_drvdata(pdev, new_bay);
 
+	/*
+	 * we want the bay driver to be able to send uevents
+	 */
+	pdev->dev.uevent_suppress = 0;
+
 	if (acpi_bay_add_fs(new_bay)) {
 		platform_device_unregister(new_bay->pdev);
 		goto bay_add_err;
@@ -328,18 +333,12 @@ static void bay_notify(acpi_handle handle, u32 event, void *data)
 {
 	struct bay *bay_dev = (struct bay *)data;
 	struct device *dev = &bay_dev->pdev->dev;
+	char event_string[12];
+	char *envp[] = { event_string, NULL };
 
 	bay_dprintk(handle, "Bay event");
-
-	switch(event) {
-	case ACPI_NOTIFY_BUS_CHECK:
-	case ACPI_NOTIFY_DEVICE_CHECK:
-	case ACPI_NOTIFY_EJECT_REQUEST:
-		kobject_uevent(&dev->kobj, KOBJ_CHANGE);
-		break;
-	default:
-		printk(KERN_ERR PREFIX "Bay: unknown event %d\n", event);
-	}
+	sprintf(event_string, "BAY_EVENT=%d", event);
+	kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
 }
 
 static acpi_status
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index e5084ececb6..cbfc81579c9 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -194,7 +194,7 @@ int acpi_bus_set_power(acpi_handle handle, int state)
 
 	if (!device->flags.power_manageable) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device `[%s]' is not power manageable\n",
-				device->dev.kobj.name));
+				kobject_name(&device->dev.kobj)));
 		return -ENODEV;
 	}
 	/*
@@ -262,10 +262,12 @@ int acpi_bus_set_power(acpi_handle handle, int state)
 		printk(KERN_WARNING PREFIX
 			      "Transitioning device [%s] to D%d\n",
 			      device->pnp.bus_id, state);
-	else
+	else {
+		device->power.state = state;
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "Device [%s] transitioned to D%d\n",
 				  device->pnp.bus_id, state));
+	}
 
 	return result;
 }
@@ -276,6 +278,7 @@ EXPORT_SYMBOL(acpi_bus_set_power);
                                 Event Management
    -------------------------------------------------------------------------- */
 
+#ifdef CONFIG_ACPI_PROC_EVENT
 static DEFINE_SPINLOCK(acpi_bus_event_lock);
 
 LIST_HEAD(acpi_bus_event_list);
@@ -283,7 +286,7 @@ DECLARE_WAIT_QUEUE_HEAD(acpi_bus_event_queue);
 
 extern int event_is_open;
 
-int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data)
+int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data)
 {
 	struct acpi_bus_event *event = NULL;
 	unsigned long flags = 0;
@@ -314,7 +317,7 @@ int acpi_bus_generate_event(struct acpi_device *device, u8 type, int data)
 	return 0;
 }
 
-EXPORT_SYMBOL(acpi_bus_generate_event);
+EXPORT_SYMBOL(acpi_bus_generate_proc_event);
 
 int acpi_bus_receive_event(struct acpi_bus_event *event)
 {
@@ -360,6 +363,7 @@ int acpi_bus_receive_event(struct acpi_bus_event *event)
 }
 
 EXPORT_SYMBOL(acpi_bus_receive_event);
+#endif	/* CONFIG_ACPI_PROC_EVENT */
 
 /* --------------------------------------------------------------------------
                              Notification Handling
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index cb4110b50cd..2e79a3395ec 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -66,6 +66,16 @@ MODULE_AUTHOR("Paul Diefenbaugh");
 MODULE_DESCRIPTION("ACPI Button Driver");
 MODULE_LICENSE("GPL");
 
+static const struct acpi_device_id button_device_ids[] = {
+	{ACPI_BUTTON_HID_LID,    0},
+	{ACPI_BUTTON_HID_SLEEP,  0},
+	{ACPI_BUTTON_HID_SLEEPF, 0},
+	{ACPI_BUTTON_HID_POWER,  0},
+	{ACPI_BUTTON_HID_POWERF, 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, button_device_ids);
+
 static int acpi_button_add(struct acpi_device *device);
 static int acpi_button_remove(struct acpi_device *device, int type);
 static int acpi_button_info_open_fs(struct inode *inode, struct file *file);
@@ -74,7 +84,7 @@ static int acpi_button_state_open_fs(struct inode *inode, struct file *file);
 static struct acpi_driver acpi_button_driver = {
 	.name = "button",
 	.class = ACPI_BUTTON_CLASS,
-	.ids = "button_power,button_sleep,PNP0C0D,PNP0C0C,PNP0C0E",
+	.ids = button_device_ids,
 	.ops = {
 		.add = acpi_button_add,
 		.remove = acpi_button_remove,
@@ -274,7 +284,7 @@ static void acpi_button_notify(acpi_handle handle, u32 event, void *data)
 		}
 		input_sync(input);
 
-		acpi_bus_generate_event(button->device, event,
+		acpi_bus_generate_proc_event(button->device, event,
 					++button->pushed);
 		break;
 	default:
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 0dd3bf7c0ed..3c25ec7a187 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -52,10 +52,18 @@ MODULE_LICENSE("GPL");
 static int acpi_container_add(struct acpi_device *device);
 static int acpi_container_remove(struct acpi_device *device, int type);
 
+static const struct acpi_device_id container_device_ids[] = {
+	{"ACPI0004", 0},
+	{"PNP0A05", 0},
+	{"PNP0A06", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, container_device_ids);
+
 static struct acpi_driver acpi_container_driver = {
 	.name = "container",
 	.class = ACPI_CONTAINER_CLASS,
-	.ids = "ACPI0004,PNP0A05,PNP0A06",
+	.ids = container_device_ids,
 	.ops = {
 		.add = acpi_container_add,
 		.remove = acpi_container_remove,
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 4546bf873ae..1dabdf4c07b 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -40,8 +40,15 @@ MODULE_AUTHOR("Kristen Carlson Accardi");
 MODULE_DESCRIPTION(ACPI_DOCK_DRIVER_DESCRIPTION);
 MODULE_LICENSE("GPL");
 
+static int immediate_undock = 1;
+module_param(immediate_undock, bool, 0644);
+MODULE_PARM_DESC(immediate_undock, "1 (default) will cause the driver to "
+	"undock immediately when the undock button is pressed, 0 will cause"
+	" the driver to wait for userspace to write the undock sysfs file "
+	" before undocking");
+
 static struct atomic_notifier_head dock_notifier_list;
-static struct platform_device dock_device;
+static struct platform_device *dock_device;
 static char dock_device_name[] = "dock";
 
 struct dock_station {
@@ -63,6 +70,7 @@ struct dock_dependent_device {
 };
 
 #define DOCK_DOCKING	0x00000001
+#define DOCK_UNDOCKING  0x00000002
 #define DOCK_EVENT	3
 #define UNDOCK_EVENT	2
 
@@ -327,12 +335,20 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event)
 
 static void dock_event(struct dock_station *ds, u32 event, int num)
 {
-	struct device *dev = &dock_device.dev;
+	struct device *dev = &dock_device->dev;
+	char event_string[13];
+	char *envp[] = { event_string, NULL };
+
+	if (num == UNDOCK_EVENT)
+		sprintf(event_string, "EVENT=undock");
+	else
+		sprintf(event_string, "EVENT=dock");
+
 	/*
 	 * Indicate that the status of the dock station has
 	 * changed.
 	 */
-	kobject_uevent(&dev->kobj, KOBJ_CHANGE);
+	kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
 }
 
 /**
@@ -380,12 +396,11 @@ static void handle_dock(struct dock_station *ds, int dock)
 	union acpi_object arg;
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
-	union acpi_object *obj;
 
 	acpi_get_name(ds->handle, ACPI_FULL_PATHNAME, &name_buffer);
-	obj = name_buffer.pointer;
 
-	printk(KERN_INFO PREFIX "%s\n", dock ? "docking" : "undocking");
+	printk(KERN_INFO PREFIX "%s - %s\n",
+		(char *)name_buffer.pointer, dock ? "docking" : "undocking");
 
 	/* _DCK method has one argument */
 	arg_list.count = 1;
@@ -394,7 +409,8 @@ static void handle_dock(struct dock_station *ds, int dock)
 	arg.integer.value = dock;
 	status = acpi_evaluate_object(ds->handle, "_DCK", &arg_list, &buffer);
 	if (ACPI_FAILURE(status))
-		pr_debug("%s: failed to execute _DCK\n", obj->string.pointer);
+		printk(KERN_ERR PREFIX "%s - failed to execute _DCK\n",
+			 (char *)name_buffer.pointer);
 	kfree(buffer.pointer);
 	kfree(name_buffer.pointer);
 }
@@ -420,6 +436,16 @@ static inline void complete_dock(struct dock_station *ds)
 	ds->last_dock_time = jiffies;
 }
 
+static inline void begin_undock(struct dock_station *ds)
+{
+	ds->flags |= DOCK_UNDOCKING;
+}
+
+static inline void complete_undock(struct dock_station *ds)
+{
+	ds->flags &= ~(DOCK_UNDOCKING);
+}
+
 /**
  * dock_in_progress - see if we are in the middle of handling a dock event
  * @ds: the dock station
@@ -550,7 +576,7 @@ static int handle_eject_request(struct dock_station *ds, u32 event)
 		printk(KERN_ERR PREFIX "Unable to undock!\n");
 		return -EBUSY;
 	}
-
+	complete_undock(ds);
 	return 0;
 }
 
@@ -594,7 +620,11 @@ static void dock_notify(acpi_handle handle, u32 event, void *data)
 	 * to the driver who wish to hotplug.
          */
 	case ACPI_NOTIFY_EJECT_REQUEST:
-		handle_eject_request(ds, event);
+		begin_undock(ds);
+		if (immediate_undock)
+			handle_eject_request(ds, event);
+		else
+			dock_event(ds, event, UNDOCK_EVENT);
 		break;
 	default:
 		printk(KERN_ERR PREFIX "Unknown dock event %d\n", event);
@@ -653,6 +683,17 @@ static ssize_t show_docked(struct device *dev,
 DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
 
 /*
+ * show_flags - read method for flags file in sysfs
+ */
+static ssize_t show_flags(struct device *dev,
+			  struct device_attribute *attr, char *buf)
+{
+	return snprintf(buf, PAGE_SIZE, "%d\n", dock_station->flags);
+
+}
+DEVICE_ATTR(flags, S_IRUGO, show_flags, NULL);
+
+/*
  * write_undock - write method for "undock" file in sysfs
  */
 static ssize_t write_undock(struct device *dev, struct device_attribute *attr,
@@ -675,16 +716,15 @@ static ssize_t show_dock_uid(struct device *dev,
 			     struct device_attribute *attr, char *buf)
 {
 	unsigned long lbuf;
-	acpi_status status = acpi_evaluate_integer(dock_station->handle, "_UID", NULL, &lbuf);
-	if(ACPI_FAILURE(status)) {
+	acpi_status status = acpi_evaluate_integer(dock_station->handle,
+					"_UID", NULL, &lbuf);
+	if (ACPI_FAILURE(status))
 	    return 0;
-	}
+
 	return snprintf(buf, PAGE_SIZE, "%lx\n", lbuf);
 }
 DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL);
 
-
-
 /**
  * dock_add - add a new dock station
  * @handle: the dock station handle
@@ -711,33 +751,53 @@ static int dock_add(acpi_handle handle)
 	ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list);
 
 	/* initialize platform device stuff */
-	dock_device.name = dock_device_name;
-	ret = platform_device_register(&dock_device);
+	dock_device =
+		platform_device_register_simple(dock_device_name, 0, NULL, 0);
+	if (IS_ERR(dock_device)) {
+		kfree(dock_station);
+		dock_station = NULL;
+		return PTR_ERR(dock_device);
+	}
+
+	/* we want the dock device to send uevents */
+	dock_device->dev.uevent_suppress = 0;
+
+	ret = device_create_file(&dock_device->dev, &dev_attr_docked);
 	if (ret) {
-		printk(KERN_ERR PREFIX "Error %d registering dock device\n", ret);
+		printk("Error %d adding sysfs file\n", ret);
+		platform_device_unregister(dock_device);
 		kfree(dock_station);
+		dock_station = NULL;
 		return ret;
 	}
-	ret = device_create_file(&dock_device.dev, &dev_attr_docked);
+	ret = device_create_file(&dock_device->dev, &dev_attr_undock);
 	if (ret) {
 		printk("Error %d adding sysfs file\n", ret);
-		platform_device_unregister(&dock_device);
+		device_remove_file(&dock_device->dev, &dev_attr_docked);
+		platform_device_unregister(dock_device);
 		kfree(dock_station);
+		dock_station = NULL;
 		return ret;
 	}
-	ret = device_create_file(&dock_device.dev, &dev_attr_undock);
+	ret = device_create_file(&dock_device->dev, &dev_attr_uid);
 	if (ret) {
 		printk("Error %d adding sysfs file\n", ret);
-		device_remove_file(&dock_device.dev, &dev_attr_docked);
-		platform_device_unregister(&dock_device);
+		device_remove_file(&dock_device->dev, &dev_attr_docked);
+		device_remove_file(&dock_device->dev, &dev_attr_undock);
+		platform_device_unregister(dock_device);
 		kfree(dock_station);
+		dock_station = NULL;
 		return ret;
 	}
-	ret = device_create_file(&dock_device.dev, &dev_attr_uid);
+	ret = device_create_file(&dock_device->dev, &dev_attr_flags);
 	if (ret) {
 		printk("Error %d adding sysfs file\n", ret);
-		platform_device_unregister(&dock_device);
+		device_remove_file(&dock_device->dev, &dev_attr_docked);
+		device_remove_file(&dock_device->dev, &dev_attr_undock);
+		device_remove_file(&dock_device->dev, &dev_attr_uid);
+		platform_device_unregister(dock_device);
 		kfree(dock_station);
+		dock_station = NULL;
 		return ret;
 	}
 
@@ -750,6 +810,7 @@ static int dock_add(acpi_handle handle)
 	dd = alloc_dock_dependent_device(handle);
 	if (!dd) {
 		kfree(dock_station);
+		dock_station = NULL;
 		ret = -ENOMEM;
 		goto dock_add_err_unregister;
 	}
@@ -773,10 +834,13 @@ static int dock_add(acpi_handle handle)
 dock_add_err:
 	kfree(dd);
 dock_add_err_unregister:
-	device_remove_file(&dock_device.dev, &dev_attr_docked);
-	device_remove_file(&dock_device.dev, &dev_attr_undock);
-	platform_device_unregister(&dock_device);
+	device_remove_file(&dock_device->dev, &dev_attr_docked);
+	device_remove_file(&dock_device->dev, &dev_attr_undock);
+	device_remove_file(&dock_device->dev, &dev_attr_uid);
+	device_remove_file(&dock_device->dev, &dev_attr_flags);
+	platform_device_unregister(dock_device);
 	kfree(dock_station);
+	dock_station = NULL;
 	return ret;
 }
 
@@ -804,12 +868,15 @@ static int dock_remove(void)
 		printk(KERN_ERR "Error removing notify handler\n");
 
 	/* cleanup sysfs */
-	device_remove_file(&dock_device.dev, &dev_attr_docked);
-	device_remove_file(&dock_device.dev, &dev_attr_undock);
-	platform_device_unregister(&dock_device);
+	device_remove_file(&dock_device->dev, &dev_attr_docked);
+	device_remove_file(&dock_device->dev, &dev_attr_undock);
+	device_remove_file(&dock_device->dev, &dev_attr_uid);
+	device_remove_file(&dock_device->dev, &dev_attr_flags);
+	platform_device_unregister(dock_device);
 
 	/* free dock station memory */
 	kfree(dock_station);
+	dock_station = NULL;
 	return 0;
 }
 
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 82f496c0767..3f7935ab0cf 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -34,25 +34,25 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/interrupt.h>
+#include <linux/list.h>
 #include <asm/io.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 #include <acpi/actypes.h>
 
-#define _COMPONENT		ACPI_EC_COMPONENT
-ACPI_MODULE_NAME("ec");
-#define ACPI_EC_COMPONENT		0x00100000
 #define ACPI_EC_CLASS			"embedded_controller"
-#define ACPI_EC_HID			"PNP0C09"
 #define ACPI_EC_DEVICE_NAME		"Embedded Controller"
 #define ACPI_EC_FILE_INFO		"info"
+
 #undef PREFIX
 #define PREFIX				"ACPI: EC: "
+
 /* EC status register */
 #define ACPI_EC_FLAG_OBF	0x01	/* Output buffer full */
 #define ACPI_EC_FLAG_IBF	0x02	/* Input buffer full */
 #define ACPI_EC_FLAG_BURST	0x10	/* burst mode */
 #define ACPI_EC_FLAG_SCI	0x20	/* EC-SCI occurred */
+
 /* EC commands */
 enum ec_command {
 	ACPI_EC_COMMAND_READ = 0x80,
@@ -61,6 +61,7 @@ enum ec_command {
 	ACPI_EC_BURST_DISABLE = 0x83,
 	ACPI_EC_COMMAND_QUERY = 0x84,
 };
+
 /* EC events */
 enum ec_event {
 	ACPI_EC_EVENT_OBF_1 = 1,	/* Output buffer full */
@@ -80,10 +81,15 @@ static int acpi_ec_start(struct acpi_device *device);
 static int acpi_ec_stop(struct acpi_device *device, int type);
 static int acpi_ec_add(struct acpi_device *device);
 
+static const struct acpi_device_id ec_device_ids[] = {
+	{"PNP0C09", 0},
+	{"", 0},
+};
+
 static struct acpi_driver acpi_ec_driver = {
 	.name = "ec",
 	.class = ACPI_EC_CLASS,
-	.ids = ACPI_EC_HID,
+	.ids = ec_device_ids,
 	.ops = {
 		.add = acpi_ec_add,
 		.remove = acpi_ec_remove,
@@ -94,6 +100,16 @@ static struct acpi_driver acpi_ec_driver = {
 
 /* If we find an EC via the ECDT, we need to keep a ptr to its context */
 /* External interfaces use first EC only, so remember */
+typedef int (*acpi_ec_query_func) (void *data);
+
+struct acpi_ec_query_handler {
+	struct list_head node;
+	acpi_ec_query_func func;
+	acpi_handle handle;
+	void *data;
+	u8 query_bit;
+};
+
 static struct acpi_ec {
 	acpi_handle handle;
 	unsigned long gpe;
@@ -104,6 +120,7 @@ static struct acpi_ec {
 	atomic_t query_pending;
 	atomic_t event_count;
 	wait_queue_head_t wait;
+	struct list_head list;
 } *boot_ec, *first_ec;
 
 /* --------------------------------------------------------------------------
@@ -245,7 +262,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, u8 command,
 
 	status = acpi_ec_wait(ec, ACPI_EC_EVENT_IBF_0, 0, 0);
 	if (status) {
-		printk(KERN_DEBUG PREFIX
+		printk(KERN_ERR PREFIX
 		       "input buffer is not empty, aborting transaction\n");
 		goto end;
 	}
@@ -394,21 +411,66 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 * data)
 /* --------------------------------------------------------------------------
                                 Event Management
    -------------------------------------------------------------------------- */
+int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
+			      acpi_handle handle, acpi_ec_query_func func,
+			      void *data)
+{
+	struct acpi_ec_query_handler *handler =
+	    kzalloc(sizeof(struct acpi_ec_query_handler), GFP_KERNEL);
+	if (!handler)
+		return -ENOMEM;
+
+	handler->query_bit = query_bit;
+	handler->handle = handle;
+	handler->func = func;
+	handler->data = data;
+	mutex_lock(&ec->lock);
+	list_add_tail(&handler->node, &ec->list);
+	mutex_unlock(&ec->lock);
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(acpi_ec_add_query_handler);
+
+void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
+{
+	struct acpi_ec_query_handler *handler;
+	mutex_lock(&ec->lock);
+	list_for_each_entry(handler, &ec->list, node) {
+		if (query_bit == handler->query_bit) {
+			list_del(&handler->node);
+			kfree(handler);
+			break;
+		}
+	}
+	mutex_unlock(&ec->lock);
+}
+
+EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler);
 
 static void acpi_ec_gpe_query(void *ec_cxt)
 {
 	struct acpi_ec *ec = ec_cxt;
 	u8 value = 0;
-	char object_name[8];
+	struct acpi_ec_query_handler *handler, copy;
 
 	if (!ec || acpi_ec_query(ec, &value))
 		return;
-
-	snprintf(object_name, 8, "_Q%2.2X", value);
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluating %s", object_name));
-
-	acpi_evaluate_object(ec->handle, object_name, NULL, NULL);
+	mutex_lock(&ec->lock);
+	list_for_each_entry(handler, &ec->list, node) {
+		if (value == handler->query_bit) {
+			/* have custom handler for this bit */
+			memcpy(&copy, handler, sizeof(copy));
+			mutex_unlock(&ec->lock);
+			if (copy.func) {
+				copy.func(copy.data);
+			} else if (copy.handle) {
+				acpi_evaluate_object(copy.handle, NULL, NULL, NULL);
+			}
+			return;
+		}
+	}
+	mutex_unlock(&ec->lock);
 }
 
 static u32 acpi_ec_gpe_handler(void *data)
@@ -427,8 +489,7 @@ static u32 acpi_ec_gpe_handler(void *data)
 	if ((value & ACPI_EC_FLAG_SCI) && !atomic_read(&ec->query_pending)) {
 		atomic_set(&ec->query_pending, 1);
 		status =
-		    acpi_os_execute(OSL_EC_BURST_HANDLER, acpi_ec_gpe_query,
-				    ec);
+		    acpi_os_execute(OSL_EC_BURST_HANDLER, acpi_ec_gpe_query, ec);
 	}
 
 	return status == AE_OK ?
@@ -454,57 +515,35 @@ acpi_ec_space_setup(acpi_handle region_handle,
 }
 
 static acpi_status
-acpi_ec_space_handler(u32 function,
-		      acpi_physical_address address,
-		      u32 bit_width,
-		      acpi_integer * value,
+acpi_ec_space_handler(u32 function, acpi_physical_address address,
+		      u32 bits, acpi_integer *value,
 		      void *handler_context, void *region_context)
 {
-	int result = 0;
 	struct acpi_ec *ec = handler_context;
-	u64 temp = *value;
-	acpi_integer f_v = 0;
-	int i = 0;
+	int result = 0, i = 0;
+	u8 temp = 0;
 
 	if ((address > 0xFF) || !value || !handler_context)
 		return AE_BAD_PARAMETER;
 
-	if (bit_width != 8 && acpi_strict) {
+	if (function != ACPI_READ && function != ACPI_WRITE)
 		return AE_BAD_PARAMETER;
-	}
-
-      next_byte:
-	switch (function) {
-	case ACPI_READ:
-		temp = 0;
-		result = acpi_ec_read(ec, (u8) address, (u8 *) & temp);
-		break;
-	case ACPI_WRITE:
-		result = acpi_ec_write(ec, (u8) address, (u8) temp);
-		break;
-	default:
-		result = -EINVAL;
-		goto out;
-		break;
-	}
 
-	bit_width -= 8;
-	if (bit_width) {
-		if (function == ACPI_READ)
-			f_v |= temp << 8 * i;
-		if (function == ACPI_WRITE)
-			temp >>= 8;
-		i++;
-		address++;
-		goto next_byte;
-	}
+	if (bits != 8 && acpi_strict)
+		return AE_BAD_PARAMETER;
 
-	if (function == ACPI_READ) {
-		f_v |= temp << 8 * i;
-		*value = f_v;
+	while (bits - i > 0) {
+		if (function == ACPI_READ) {
+			result = acpi_ec_read(ec, address, &temp);
+			(*value) |= ((acpi_integer)temp) << i;
+		} else {
+			temp = 0xff & ((*value) >> i);
+			result = acpi_ec_write(ec, address, temp);
+		}
+		i += 8;
+		++address;
 	}
 
-      out:
 	switch (result) {
 	case -EINVAL:
 		return AE_BAD_PARAMETER;
@@ -597,9 +636,6 @@ static int acpi_ec_remove_fs(struct acpi_device *device)
 static acpi_status
 ec_parse_io_ports(struct acpi_resource *resource, void *context);
 
-static acpi_status
-ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval);
-
 static struct acpi_ec *make_acpi_ec(void)
 {
 	struct acpi_ec *ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);
@@ -610,13 +646,58 @@ static struct acpi_ec *make_acpi_ec(void)
 	atomic_set(&ec->event_count, 1);
 	mutex_init(&ec->lock);
 	init_waitqueue_head(&ec->wait);
+	INIT_LIST_HEAD(&ec->list);
 
 	return ec;
 }
 
+static acpi_status
+acpi_ec_register_query_methods(acpi_handle handle, u32 level,
+			       void *context, void **return_value)
+{
+	struct acpi_namespace_node *node = handle;
+	struct acpi_ec *ec = context;
+	int value = 0;
+	if (sscanf(node->name.ascii, "_Q%x", &value) == 1) {
+		acpi_ec_add_query_handler(ec, value, handle, NULL, NULL);
+	}
+	return AE_OK;
+}
+
+static acpi_status
+ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
+{
+	acpi_status status;
+
+	struct acpi_ec *ec = context;
+	status = acpi_walk_resources(handle, METHOD_NAME__CRS,
+				     ec_parse_io_ports, ec);
+	if (ACPI_FAILURE(status))
+		return status;
+
+	/* Get GPE bit assignment (EC events). */
+	/* TODO: Add support for _GPE returning a package */
+	status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec->gpe);
+	if (ACPI_FAILURE(status))
+		return status;
+
+	/* Find and register all query methods */
+	acpi_walk_namespace(ACPI_TYPE_METHOD, handle, 1,
+			    acpi_ec_register_query_methods, ec, NULL);
+
+	/* Use the global lock for all EC transactions? */
+	acpi_evaluate_integer(handle, "_GLK", NULL, &ec->global_lock);
+
+	ec->handle = handle;
+
+	printk(KERN_INFO PREFIX "GPE = 0x%lx, I/O: command/status = 0x%lx, data = 0x%lx\n",
+			  ec->gpe, ec->command_addr, ec->data_addr);
+
+	return AE_CTRL_TERMINATE;
+}
+
 static int acpi_ec_add(struct acpi_device *device)
 {
-	acpi_status status = AE_OK;
 	struct acpi_ec *ec = NULL;
 
 	if (!device)
@@ -629,8 +710,8 @@ static int acpi_ec_add(struct acpi_device *device)
 	if (!ec)
 		return -ENOMEM;
 
-	status = ec_parse_device(device->handle, 0, ec, NULL);
-	if (status != AE_CTRL_TERMINATE) {
+	if (ec_parse_device(device->handle, 0, ec, NULL) !=
+	    AE_CTRL_TERMINATE) {
 		kfree(ec);
 		return -EINVAL;
 	}
@@ -641,6 +722,8 @@ static int acpi_ec_add(struct acpi_device *device)
 			/* We might have incorrect info for GL at boot time */
 			mutex_lock(&boot_ec->lock);
 			boot_ec->global_lock = ec->global_lock;
+			/* Copy handlers from new ec into boot ec */
+			list_splice(&ec->list, &boot_ec->list);
 			mutex_unlock(&boot_ec->lock);
 			kfree(ec);
 			ec = boot_ec;
@@ -651,22 +734,24 @@ static int acpi_ec_add(struct acpi_device *device)
 	acpi_driver_data(device) = ec;
 
 	acpi_ec_add_fs(device);
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s [%s] (gpe %d) interrupt mode.",
-			  acpi_device_name(device), acpi_device_bid(device),
-			  (u32) ec->gpe));
-
 	return 0;
 }
 
 static int acpi_ec_remove(struct acpi_device *device, int type)
 {
 	struct acpi_ec *ec;
+	struct acpi_ec_query_handler *handler, *tmp;
 
 	if (!device)
 		return -EINVAL;
 
 	ec = acpi_driver_data(device);
+	mutex_lock(&ec->lock);
+	list_for_each_entry_safe(handler, tmp, &ec->list, node) {
+		list_del(&handler->node);
+		kfree(handler);
+	}
+	mutex_unlock(&ec->lock);
 	acpi_ec_remove_fs(device);
 	acpi_driver_data(device) = NULL;
 	if (ec == first_ec)
@@ -722,15 +807,13 @@ static int ec_install_handlers(struct acpi_ec *ec)
 		return -ENODEV;
 	}
 
-	/* EC is fully operational, allow queries */
-	atomic_set(&ec->query_pending, 0);
-
 	return 0;
 }
 
 static int acpi_ec_start(struct acpi_device *device)
 {
 	struct acpi_ec *ec;
+	int ret = 0;
 
 	if (!device)
 		return -EINVAL;
@@ -740,14 +823,14 @@ static int acpi_ec_start(struct acpi_device *device)
 	if (!ec)
 		return -EINVAL;
 
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "gpe=0x%02lx, ports=0x%2lx,0x%2lx",
-			  ec->gpe, ec->command_addr, ec->data_addr));
-
 	/* Boot EC is already working */
-	if (ec == boot_ec)
-		return 0;
+	if (ec != boot_ec)
+		ret = ec_install_handlers(ec);
+
+	/* EC is fully operational, allow queries */
+	atomic_set(&ec->query_pending, 0);
 
-	return ec_install_handlers(ec);
+	return ret;
 }
 
 static int acpi_ec_stop(struct acpi_device *device, int type)
@@ -779,34 +862,6 @@ static int acpi_ec_stop(struct acpi_device *device, int type)
 	return 0;
 }
 
-static acpi_status
-ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval)
-{
-	acpi_status status;
-
-	struct acpi_ec *ec = context;
-	status = acpi_walk_resources(handle, METHOD_NAME__CRS,
-				     ec_parse_io_ports, ec);
-	if (ACPI_FAILURE(status))
-		return status;
-
-	/* Get GPE bit assignment (EC events). */
-	/* TODO: Add support for _GPE returning a package */
-	status = acpi_evaluate_integer(handle, "_GPE", NULL, &ec->gpe);
-	if (ACPI_FAILURE(status))
-		return status;
-
-	/* Use the global lock for all EC transactions? */
-	acpi_evaluate_integer(handle, "_GLK", NULL, &ec->global_lock);
-
-	ec->handle = handle;
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "GPE=0x%02lx, ports=0x%2lx, 0x%2lx",
-			  ec->gpe, ec->command_addr, ec->data_addr));
-
-	return AE_CTRL_TERMINATE;
-}
-
 int __init acpi_ec_ecdt_probe(void)
 {
 	int ret;
@@ -819,18 +874,22 @@ int __init acpi_ec_ecdt_probe(void)
 	/*
 	 * Generate a boot ec context
 	 */
-
 	status = acpi_get_table(ACPI_SIG_ECDT, 1,
 				(struct acpi_table_header **)&ecdt_ptr);
-	if (ACPI_FAILURE(status))
-		goto error;
-
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found ECDT"));
-
-	boot_ec->command_addr = ecdt_ptr->control.address;
-	boot_ec->data_addr = ecdt_ptr->data.address;
-	boot_ec->gpe = ecdt_ptr->gpe;
-	boot_ec->handle = ACPI_ROOT_OBJECT;
+	if (ACPI_SUCCESS(status)) {
+		printk(KERN_INFO PREFIX "EC description table is found, configuring boot EC\n\n");
+		boot_ec->command_addr = ecdt_ptr->control.address;
+		boot_ec->data_addr = ecdt_ptr->data.address;
+		boot_ec->gpe = ecdt_ptr->gpe;
+		boot_ec->handle = ACPI_ROOT_OBJECT;
+	} else {
+		printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
+		status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
+						boot_ec, NULL);
+		/* Check that acpi_get_devices actually find something */
+		if (ACPI_FAILURE(status) || !boot_ec->handle)
+			goto error;
+	}
 
 	ret = ec_install_handlers(boot_ec);
 	if (!ret) {
diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c
index 3b23562e6f9..5c95863f8fa 100644
--- a/drivers/acpi/event.c
+++ b/drivers/acpi/event.c
@@ -11,10 +11,13 @@
 #include <linux/init.h>
 #include <linux/poll.h>
 #include <acpi/acpi_drivers.h>
+#include <net/netlink.h>
+#include <net/genetlink.h>
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("event");
 
+#ifdef CONFIG_ACPI_PROC_EVENT
 /* Global vars for handling event proc entry */
 static DEFINE_SPINLOCK(acpi_system_event_lock);
 int event_is_open = 0;
@@ -48,7 +51,6 @@ acpi_system_read_event(struct file *file, char __user * buffer, size_t count,
 	static int chars_remaining = 0;
 	static char *ptr;
 
-
 	if (!chars_remaining) {
 		memset(&event, 0, sizeof(struct acpi_bus_event));
 
@@ -105,24 +107,173 @@ static const struct file_operations acpi_system_event_ops = {
 	.release = acpi_system_close_event,
 	.poll = acpi_system_poll_event,
 };
+#endif	/* CONFIG_ACPI_PROC_EVENT */
+
+#ifdef CONFIG_NET
+static unsigned int acpi_event_seqnum;
+struct acpi_genl_event {
+	acpi_device_class device_class;
+	char bus_id[15];
+	u32 type;
+	u32 data;
+};
+
+/* attributes of acpi_genl_family */
+enum {
+	ACPI_GENL_ATTR_UNSPEC,
+	ACPI_GENL_ATTR_EVENT,	/* ACPI event info needed by user space */
+	__ACPI_GENL_ATTR_MAX,
+};
+#define ACPI_GENL_ATTR_MAX (__ACPI_GENL_ATTR_MAX - 1)
+
+/* commands supported by the acpi_genl_family */
+enum {
+	ACPI_GENL_CMD_UNSPEC,
+	ACPI_GENL_CMD_EVENT,	/* kernel->user notifications for ACPI events */
+	__ACPI_GENL_CMD_MAX,
+};
+#define ACPI_GENL_CMD_MAX (__ACPI_GENL_CMD_MAX - 1)
+
+#define ACPI_GENL_FAMILY_NAME		"acpi_event"
+#define ACPI_GENL_VERSION		0x01
+#define ACPI_GENL_MCAST_GROUP_NAME 	"acpi_mc_group"
+
+static struct genl_family acpi_event_genl_family = {
+	.id = GENL_ID_GENERATE,
+	.name = ACPI_GENL_FAMILY_NAME,
+	.version = ACPI_GENL_VERSION,
+	.maxattr = ACPI_GENL_ATTR_MAX,
+};
+
+static struct genl_multicast_group acpi_event_mcgrp = {
+	.name = ACPI_GENL_MCAST_GROUP_NAME,
+};
+
+int acpi_bus_generate_netlink_event(const char *device_class,
+				      const char *bus_id,
+				      u8 type, int data)
+{
+	struct sk_buff *skb;
+	struct nlattr *attr;
+	struct acpi_genl_event *event;
+	void *msg_header;
+	int size;
+	int result;
+
+	/* allocate memory */
+	size = nla_total_size(sizeof(struct acpi_genl_event)) +
+	    nla_total_size(0);
+
+	skb = genlmsg_new(size, GFP_ATOMIC);
+	if (!skb)
+		return -ENOMEM;
+
+	/* add the genetlink message header */
+	msg_header = genlmsg_put(skb, 0, acpi_event_seqnum++,
+				 &acpi_event_genl_family, 0,
+				 ACPI_GENL_CMD_EVENT);
+	if (!msg_header) {
+		nlmsg_free(skb);
+		return -ENOMEM;
+	}
+
+	/* fill the data */
+	attr =
+	    nla_reserve(skb, ACPI_GENL_ATTR_EVENT,
+			sizeof(struct acpi_genl_event));
+	if (!attr) {
+		nlmsg_free(skb);
+		return -EINVAL;
+	}
+
+	event = nla_data(attr);
+	if (!event) {
+		nlmsg_free(skb);
+		return -EINVAL;
+	}
+
+	memset(event, 0, sizeof(struct acpi_genl_event));
+
+	strcpy(event->device_class, device_class);
+	strcpy(event->bus_id, bus_id);
+	event->type = type;
+	event->data = data;
+
+	/* send multicast genetlink message */
+	result = genlmsg_end(skb, msg_header);
+	if (result < 0) {
+		nlmsg_free(skb);
+		return result;
+	}
+
+	result =
+	    genlmsg_multicast(skb, 0, acpi_event_mcgrp.id, GFP_ATOMIC);
+	if (result)
+		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+				  "Failed to send a Genetlink message!\n"));
+	return 0;
+}
+
+EXPORT_SYMBOL(acpi_bus_generate_netlink_event);
+
+static int acpi_event_genetlink_init(void)
+{
+	int result;
+
+	result = genl_register_family(&acpi_event_genl_family);
+	if (result)
+		return result;
+
+	result = genl_register_mc_group(&acpi_event_genl_family,
+					&acpi_event_mcgrp);
+	if (result)
+		genl_unregister_family(&acpi_event_genl_family);
+
+	return result;
+}
+
+#else
+int acpi_bus_generate_netlink_event(const char *device_class,
+				      const char *bus_id,
+				      u8 type, int data)
+{
+	return 0;
+}
+
+EXPORT_SYMBOL(acpi_bus_generate_netlink_event);
+
+static int acpi_event_genetlink_init(void)
+{
+	return -ENODEV;
+}
+#endif
 
 static int __init acpi_event_init(void)
 {
+#ifdef CONFIG_ACPI_PROC_EVENT
 	struct proc_dir_entry *entry;
+#endif
 	int error = 0;
 
-
 	if (acpi_disabled)
 		return 0;
 
+	/* create genetlink for acpi event */
+	error = acpi_event_genetlink_init();
+	if (error)
+		printk(KERN_WARNING PREFIX
+		       "Failed to create genetlink family for ACPI event\n");
+
+#ifdef CONFIG_ACPI_PROC_EVENT
 	/* 'event' [R] */
 	entry = create_proc_entry("event", S_IRUSR, acpi_root_dir);
 	if (entry)
 		entry->proc_fops = &acpi_system_event_ops;
-	else {
-		error = -ENODEV;
-	}
-	return error;
+	else
+		return -ENODEV;
+#endif
+
+	return 0;
 }
 
-subsys_initcall(acpi_event_init);
+fs_initcall(acpi_event_init);
diff --git a/drivers/acpi/events/evgpeblk.c b/drivers/acpi/events/evgpeblk.c
index 902c287b3a4..361ebe6c4a6 100644
--- a/drivers/acpi/events/evgpeblk.c
+++ b/drivers/acpi/events/evgpeblk.c
@@ -586,6 +586,10 @@ acpi_ev_delete_gpe_xrupt(struct acpi_gpe_xrupt_info *gpe_xrupt)
 	flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
 	if (gpe_xrupt->previous) {
 		gpe_xrupt->previous->next = gpe_xrupt->next;
+	} else {
+		/* No previous, update list head */
+
+		acpi_gbl_gpe_xrupt_list_head = gpe_xrupt->next;
 	}
 
 	if (gpe_xrupt->next) {
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
index 400d90fca96..b1aaa0e8458 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/events/evrgnini.c
@@ -284,6 +284,7 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
 	}
 
 	if (!pci_device_node) {
+		ACPI_FREE(pci_id);
 		return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
 	}
 
@@ -377,7 +378,7 @@ static u8 acpi_ev_match_pci_root_bridge(char *id)
 static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node)
 {
 	acpi_status status;
-	struct acpi_device_id hid;
+	struct acpica_device_id hid;
 	struct acpi_compatible_id_list *cid;
 	acpi_native_uint i;
 
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index ec655c53949..c81f6bdb68b 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -50,10 +50,16 @@ static int acpi_fan_remove(struct acpi_device *device, int type);
 static int acpi_fan_suspend(struct acpi_device *device, pm_message_t state);
 static int acpi_fan_resume(struct acpi_device *device);
 
+static const struct acpi_device_id fan_device_ids[] = {
+	{"PNP0C0B", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, fan_device_ids);
+
 static struct acpi_driver acpi_fan_driver = {
 	.name = "fan",
 	.class = ACPI_FAN_CLASS,
-	.ids = "PNP0C0B",
+	.ids = fan_device_ids,
 	.ops = {
 		.add = acpi_fan_add,
 		.remove = acpi_fan_remove,
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index 41427a41f62..4893e256e39 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -16,7 +16,7 @@
 #if ACPI_GLUE_DEBUG
 #define DBG(x...) printk(PREFIX x)
 #else
-#define DBG(x...)
+#define DBG(x...) do { } while(0)
 #endif
 static LIST_HEAD(bus_type_list);
 static DECLARE_RWSEM(bus_type_sem);
diff --git a/drivers/acpi/hardware/hwsleep.c b/drivers/acpi/hardware/hwsleep.c
index 76c525dc590..cf69c0040a3 100644
--- a/drivers/acpi/hardware/hwsleep.c
+++ b/drivers/acpi/hardware/hwsleep.c
@@ -576,13 +576,10 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state)
 		ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
 	}
 
-	status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL);
-	if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-		ACPI_EXCEPTION((AE_INFO, status, "During Method _WAK"));
-	}
-	/* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
-
 	/*
+	 * GPEs must be enabled before _WAK is called as GPEs
+	 * might get fired there
+	 *
 	 * Restore the GPEs:
 	 * 1) Disable/Clear all GPEs
 	 * 2) Enable all runtime GPEs
@@ -591,13 +588,19 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state)
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
 	}
-	acpi_gbl_system_awake_and_running = TRUE;
-
 	status = acpi_hw_enable_all_runtime_gpes();
 	if (ACPI_FAILURE(status)) {
 		return_ACPI_STATUS(status);
 	}
 
+	status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL);
+	if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+		ACPI_EXCEPTION((AE_INFO, status, "During Method _WAK"));
+	}
+	/* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
+
+	acpi_gbl_system_awake_and_running = TRUE;
+
 	/* Enable power button */
 
 	(void)
diff --git a/drivers/acpi/namespace/nsxfeval.c b/drivers/acpi/namespace/nsxfeval.c
index be4f2899de7..f39fbc6b923 100644
--- a/drivers/acpi/namespace/nsxfeval.c
+++ b/drivers/acpi/namespace/nsxfeval.c
@@ -440,7 +440,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
 	acpi_status status;
 	struct acpi_namespace_node *node;
 	u32 flags;
-	struct acpi_device_id hid;
+	struct acpica_device_id hid;
 	struct acpi_compatible_id_list *cid;
 	acpi_native_uint i;
 
@@ -540,7 +540,7 @@ acpi_ns_get_device_callback(acpi_handle obj_handle,
  ******************************************************************************/
 
 acpi_status
-acpi_get_devices(char *HID,
+acpi_get_devices(const char *HID,
 		 acpi_walk_callback user_function,
 		 void *context, void **return_value)
 {
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 0c9f15c54e8..ab04d848b19 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -36,13 +36,11 @@
 ACPI_MODULE_NAME("numa");
 
 static nodemask_t nodes_found_map = NODE_MASK_NONE;
-#define PXM_INVAL	-1
-#define NID_INVAL	-1
 
 /* maps to convert between proximity domain and logical node ID */
-static int pxm_to_node_map[MAX_PXM_DOMAINS]
+static int __cpuinitdata pxm_to_node_map[MAX_PXM_DOMAINS]
 				= { [0 ... MAX_PXM_DOMAINS - 1] = NID_INVAL };
-static int node_to_pxm_map[MAX_NUMNODES]
+static int __cpuinitdata node_to_pxm_map[MAX_NUMNODES]
 				= { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
 
 int pxm_to_node(int pxm)
@@ -59,6 +57,12 @@ int node_to_pxm(int node)
 	return node_to_pxm_map[node];
 }
 
+void __acpi_map_pxm_to_node(int pxm, int node)
+{
+	pxm_to_node_map[pxm] = node;
+	node_to_pxm_map[node] = pxm;
+}
+
 int acpi_map_pxm_to_node(int pxm)
 {
 	int node = pxm_to_node_map[pxm];
@@ -67,8 +71,7 @@ int acpi_map_pxm_to_node(int pxm)
 		if (nodes_weight(nodes_found_map) >= MAX_NUMNODES)
 			return NID_INVAL;
 		node = first_unset_node(nodes_found_map);
-		pxm_to_node_map[pxm] = node;
-		node_to_pxm_map[node] = pxm;
+		__acpi_map_pxm_to_node(pxm, node);
 		node_set(node, nodes_found_map);
 	}
 
@@ -83,7 +86,8 @@ void __cpuinit acpi_unmap_pxm_to_node(int node)
 	node_clear(node, nodes_found_map);
 }
 
-void __init acpi_table_print_srat_entry(struct acpi_subtable_header * header)
+static void __init
+acpi_table_print_srat_entry(struct acpi_subtable_header *header)
 {
 
 	ACPI_FUNCTION_NAME("acpi_table_print_srat_entry");
@@ -200,7 +204,7 @@ static int __init acpi_parse_srat(struct acpi_table_header *table)
 	return 0;
 }
 
-int __init
+static int __init
 acpi_table_parse_srat(enum acpi_srat_type id,
 		      acpi_table_entry_handler handler, unsigned int max_entries)
 {
@@ -211,14 +215,13 @@ acpi_table_parse_srat(enum acpi_srat_type id,
 
 int __init acpi_numa_init(void)
 {
-	int result;
-
 	/* SRAT: Static Resource Affinity Table */
 	if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
-		result = acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
-					       acpi_parse_processor_affinity,
-					       NR_CPUS);
-		result = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, acpi_parse_memory_affinity, NR_NODE_MEMBLKS);	// IA64 specific
+		acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
+				      acpi_parse_processor_affinity, NR_CPUS);
+		acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
+				      acpi_parse_memory_affinity,
+				      NR_NODE_MEMBLKS);
 	}
 
 	/* SLIT: System Locality Information Table */
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 2e7ba615d76..352cf81af58 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -77,13 +77,7 @@ static struct workqueue_struct *kacpi_notify_wq;
 #define	OSI_STRING_LENGTH_MAX 64	/* arbitrary */
 static char osi_additional_string[OSI_STRING_LENGTH_MAX];
 
-#define OSI_LINUX_ENABLED
-#ifdef	OSI_LINUX_ENABLED
-int osi_linux = 1;	/* enable _OSI(Linux) by default */
-#else
-int osi_linux;		/* disable _OSI(Linux) by default */
-#endif
-
+static int osi_linux;		/* disable _OSI(Linux) by default */
 
 #ifdef CONFIG_DMI
 static struct __initdata dmi_system_id acpi_osl_dmi_table[];
@@ -1098,7 +1092,7 @@ void acpi_os_release_lock(acpi_spinlock lockp, acpi_cpu_flags flags)
 acpi_status
 acpi_os_create_cache(char *name, u16 size, u16 depth, acpi_cache_t ** cache)
 {
-	*cache = kmem_cache_create(name, size, 0, 0, NULL, NULL);
+	*cache = kmem_cache_create(name, size, 0, 0, NULL);
 	if (*cache == NULL)
 		return AE_ERROR;
 	else
@@ -1183,17 +1177,10 @@ acpi_os_validate_interface (char *interface)
 	if (!strcmp("Linux", interface)) {
 		printk(KERN_WARNING PREFIX
 			"System BIOS is requesting _OSI(Linux)\n");
-#ifdef	OSI_LINUX_ENABLED
-		printk(KERN_WARNING PREFIX
-			"Please test with \"acpi_osi=!Linux\"\n"
-			"Please send dmidecode "
-			"to linux-acpi@vger.kernel.org\n");
-#else
 		printk(KERN_WARNING PREFIX
 			"If \"acpi_osi=Linux\" works better,\n"
 			"Please send dmidecode "
 			"to linux-acpi@vger.kernel.org\n");
-#endif
 		if(osi_linux)
 			return AE_OK;
 	}
@@ -1227,36 +1214,14 @@ acpi_os_validate_address (
 }
 
 #ifdef CONFIG_DMI
-#ifdef	OSI_LINUX_ENABLED
-static int dmi_osi_not_linux(struct dmi_system_id *d)
+static int dmi_osi_linux(const struct dmi_system_id *d)
 {
-	printk(KERN_NOTICE "%s detected: requires not _OSI(Linux)\n", d->ident);
-	enable_osi_linux(0);
-	return 0;
-}
-#else
-static int dmi_osi_linux(struct dmi_system_id *d)
-{
-	printk(KERN_NOTICE "%s detected: requires _OSI(Linux)\n", d->ident);
+	printk(KERN_NOTICE "%s detected: enabling _OSI(Linux)\n", d->ident);
 	enable_osi_linux(1);
 	return 0;
 }
-#endif
 
 static struct dmi_system_id acpi_osl_dmi_table[] __initdata = {
-#ifdef	OSI_LINUX_ENABLED
-	/*
-	 * Boxes that need NOT _OSI(Linux)
-	 */
-	{
-	 .callback = dmi_osi_not_linux,
-	 .ident = "Toshiba Satellite P100",
-	 .matches = {
-		     DMI_MATCH(DMI_BOARD_VENDOR, "TOSHIBA"),
-		     DMI_MATCH(DMI_BOARD_NAME, "Satellite P100"),
-		     },
-	 },
-#else
 	/*
 	 * Boxes that need _OSI(Linux)
 	 */
@@ -1268,7 +1233,6 @@ static struct dmi_system_id acpi_osl_dmi_table[] __initdata = {
 		     DMI_MATCH(DMI_BOARD_NAME, "MPAD-MSAE Customer Reference Boards"),
 		     },
 	 },
-#endif
 	{}
 };
 #endif /* CONFIG_DMI */
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index acc59477137..c9f526e5539 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -46,7 +46,6 @@
 #define _COMPONENT		ACPI_PCI_COMPONENT
 ACPI_MODULE_NAME("pci_link");
 #define ACPI_PCI_LINK_CLASS		"pci_irq_routing"
-#define ACPI_PCI_LINK_HID		"PNP0C0F"
 #define ACPI_PCI_LINK_DEVICE_NAME	"PCI Interrupt Link"
 #define ACPI_PCI_LINK_FILE_INFO		"info"
 #define ACPI_PCI_LINK_FILE_STATUS	"state"
@@ -54,10 +53,16 @@ ACPI_MODULE_NAME("pci_link");
 static int acpi_pci_link_add(struct acpi_device *device);
 static int acpi_pci_link_remove(struct acpi_device *device, int type);
 
+static struct acpi_device_id link_device_ids[] = {
+	{"PNP0C0F", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, link_device_ids);
+
 static struct acpi_driver acpi_pci_link_driver = {
 	.name = "pci_link",
 	.class = ACPI_PCI_LINK_CLASS,
-	.ids = ACPI_PCI_LINK_HID,
+	.ids = link_device_ids,
 	.ops = {
 		.add = acpi_pci_link_add,
 		.remove = acpi_pci_link_remove,
@@ -733,7 +738,7 @@ static int acpi_pci_link_add(struct acpi_device *device)
 	/* query and set link->irq.active */
 	acpi_pci_link_get_current(link);
 
-	printk(PREFIX "%s [%s] (IRQs", acpi_device_name(device),
+	printk(KERN_INFO PREFIX "%s [%s] (IRQs", acpi_device_name(device),
 	       acpi_device_bid(device));
 	for (i = 0; i < link->irq.possible_count; i++) {
 		if (link->irq.active == link->irq.possible[i]) {
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index ad4145a3778..f14ff1ffab2 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -38,16 +38,21 @@
 #define _COMPONENT		ACPI_PCI_COMPONENT
 ACPI_MODULE_NAME("pci_root");
 #define ACPI_PCI_ROOT_CLASS		"pci_bridge"
-#define ACPI_PCI_ROOT_HID		"PNP0A03"
 #define ACPI_PCI_ROOT_DEVICE_NAME	"PCI Root Bridge"
 static int acpi_pci_root_add(struct acpi_device *device);
 static int acpi_pci_root_remove(struct acpi_device *device, int type);
 static int acpi_pci_root_start(struct acpi_device *device);
 
+static struct acpi_device_id root_device_ids[] = {
+	{"PNP0A03", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, root_device_ids);
+
 static struct acpi_driver acpi_pci_root_driver = {
 	.name = "pci_root",
 	.class = ACPI_PCI_ROOT_CLASS,
-	.ids = ACPI_PCI_ROOT_HID,
+	.ids = root_device_ids,
 	.ops = {
 		.add = acpi_pci_root_add,
 		.remove = acpi_pci_root_remove,
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 4ffecd17970..57b9a2998fd 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -59,10 +59,16 @@ static int acpi_power_remove(struct acpi_device *device, int type);
 static int acpi_power_resume(struct acpi_device *device);
 static int acpi_power_open_fs(struct inode *inode, struct file *file);
 
+static struct acpi_device_id power_device_ids[] = {
+	{ACPI_POWER_HID, 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, power_device_ids);
+
 static struct acpi_driver acpi_power_driver = {
 	.name = "power",
 	.class = ACPI_POWER_CLASS,
-	.ids = ACPI_POWER_HID,
+	.ids = power_device_ids,
 	.ops = {
 		.add = acpi_power_add,
 		.remove = acpi_power_remove,
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index e1ca86dfdd6..9f11dc296cd 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -66,6 +66,7 @@
 #define ACPI_PROCESSOR_FILE_LIMIT	"limit"
 #define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80
 #define ACPI_PROCESSOR_NOTIFY_POWER	0x81
+#define ACPI_PROCESSOR_NOTIFY_THROTTLING	0x82
 
 #define ACPI_PROCESSOR_LIMIT_USER	0
 #define ACPI_PROCESSOR_LIMIT_THERMAL	1
@@ -84,15 +85,25 @@ static int acpi_processor_info_open_fs(struct inode *inode, struct file *file);
 static void acpi_processor_notify(acpi_handle handle, u32 event, void *data);
 static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu);
 static int acpi_processor_handle_eject(struct acpi_processor *pr);
+extern int acpi_processor_tstate_has_changed(struct acpi_processor *pr);
+
+
+static const struct acpi_device_id processor_device_ids[] = {
+	{ACPI_PROCESSOR_HID, 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, processor_device_ids);
 
 static struct acpi_driver acpi_processor_driver = {
 	.name = "processor",
 	.class = ACPI_PROCESSOR_CLASS,
-	.ids = ACPI_PROCESSOR_HID,
+	.ids = processor_device_ids,
 	.ops = {
 		.add = acpi_processor_add,
 		.remove = acpi_processor_remove,
 		.start = acpi_processor_start,
+		.suspend = acpi_processor_suspend,
+		.resume = acpi_processor_resume,
 		},
 };
 
@@ -689,13 +700,23 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
 	switch (event) {
 	case ACPI_PROCESSOR_NOTIFY_PERFORMANCE:
 		acpi_processor_ppc_has_changed(pr);
-		acpi_bus_generate_event(device, event,
+		acpi_bus_generate_proc_event(device, event,
 					pr->performance_platform_limit);
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  device->dev.bus_id, event,
+						  pr->performance_platform_limit);
 		break;
 	case ACPI_PROCESSOR_NOTIFY_POWER:
 		acpi_processor_cst_has_changed(pr);
-		acpi_bus_generate_event(device, event, 0);
+		acpi_bus_generate_proc_event(device, event, 0);
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  device->dev.bus_id, event, 0);
 		break;
+	case ACPI_PROCESSOR_NOTIFY_THROTTLING:
+		acpi_processor_tstate_has_changed(pr);
+		acpi_bus_generate_proc_event(device, event, 0);
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  device->dev.bus_id, event, 0);
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "Unsupported event [0x%x]\n", event));
@@ -705,6 +726,25 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
 	return;
 }
 
+static int acpi_cpu_soft_notify(struct notifier_block *nfb,
+		unsigned long action, void *hcpu)
+{
+	unsigned int cpu = (unsigned long)hcpu;
+	struct acpi_processor *pr = processors[cpu];
+
+	if (action == CPU_ONLINE && pr) {
+		acpi_processor_ppc_has_changed(pr);
+		acpi_processor_cst_has_changed(pr);
+		acpi_processor_tstate_has_changed(pr);
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block acpi_cpu_notifier =
+{
+	    .notifier_call = acpi_cpu_soft_notify,
+};
+
 static int acpi_processor_add(struct acpi_device *device)
 {
 	struct acpi_processor *pr = NULL;
@@ -968,6 +1008,7 @@ void acpi_processor_install_hotplug_notify(void)
 			    ACPI_UINT32_MAX,
 			    processor_walk_namespace_cb, &action, NULL);
 #endif
+	register_hotcpu_notifier(&acpi_cpu_notifier);
 }
 
 static
@@ -980,6 +1021,7 @@ void acpi_processor_uninstall_hotplug_notify(void)
 			    ACPI_UINT32_MAX,
 			    processor_walk_namespace_cb, &action, NULL);
 #endif
+	unregister_hotcpu_notifier(&acpi_cpu_notifier);
 }
 
 /*
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 80ffc782991..1f6fb38de01 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -63,6 +63,7 @@
 ACPI_MODULE_NAME("processor_idle");
 #define ACPI_PROCESSOR_FILE_POWER	"power"
 #define US_TO_PM_TIMER_TICKS(t)		((t * (PM_TIMER_FREQUENCY/1000)) / 1000)
+#define PM_TIMER_TICK_NS		(1000000000ULL/PM_TIMER_FREQUENCY)
 #define C2_OVERHEAD			4	/* 1us (3.579 ticks per us) */
 #define C3_OVERHEAD			4	/* 1us (3.579 ticks per us) */
 static void (*pm_idle_save) (void) __read_mostly;
@@ -91,7 +92,7 @@ module_param(bm_history, uint, 0644);
  *
  * To skip this limit, boot/load with a large max_cstate limit.
  */
-static int set_max_cstate(struct dmi_system_id *id)
+static int set_max_cstate(const struct dmi_system_id *id)
 {
 	if (max_cstate > ACPI_PROCESSOR_MAX_POWER)
 		return 0;
@@ -275,21 +276,12 @@ static void acpi_timer_check_state(int state, struct acpi_processor *pr,
 
 static void acpi_propagate_timer_broadcast(struct acpi_processor *pr)
 {
-#ifdef CONFIG_GENERIC_CLOCKEVENTS
 	unsigned long reason;
 
 	reason = pr->power.timer_broadcast_on_state < INT_MAX ?
 		CLOCK_EVT_NOTIFY_BROADCAST_ON : CLOCK_EVT_NOTIFY_BROADCAST_OFF;
 
 	clockevents_notify(reason, &pr->id);
-#else
-	cpumask_t mask = cpumask_of_cpu(pr->id);
-
-	if (pr->power.timer_broadcast_on_state < INT_MAX)
-		on_each_cpu(switch_APIC_timer_to_ipi, &mask, 1, 1);
-	else
-		on_each_cpu(switch_ipi_to_APIC_timer, &mask, 1, 1);
-#endif
 }
 
 /* Power(C) State timer broadcast control */
@@ -297,8 +289,6 @@ static void acpi_state_timer_broadcast(struct acpi_processor *pr,
 				       struct acpi_processor_cx *cx,
 				       int broadcast)
 {
-#ifdef CONFIG_GENERIC_CLOCKEVENTS
-
 	int state = cx - pr->power.states;
 
 	if (state >= pr->power.timer_broadcast_on_state) {
@@ -308,7 +298,6 @@ static void acpi_state_timer_broadcast(struct acpi_processor *pr,
 			CLOCK_EVT_NOTIFY_BROADCAST_EXIT;
 		clockevents_notify(reason, &pr->id);
 	}
-#endif
 }
 
 #else
@@ -324,6 +313,23 @@ static void acpi_state_timer_broadcast(struct acpi_processor *pr,
 
 #endif
 
+/*
+ * Suspend / resume control
+ */
+static int acpi_idle_suspend;
+
+int acpi_processor_suspend(struct acpi_device * device, pm_message_t state)
+{
+	acpi_idle_suspend = 1;
+	return 0;
+}
+
+int acpi_processor_resume(struct acpi_device * device)
+{
+	acpi_idle_suspend = 0;
+	return 0;
+}
+
 static void acpi_processor_idle(void)
 {
 	struct acpi_processor *pr = NULL;
@@ -354,7 +360,7 @@ static void acpi_processor_idle(void)
 	}
 
 	cx = pr->power.state;
-	if (!cx) {
+	if (!cx || acpi_idle_suspend) {
 		if (pm_idle_save)
 			pm_idle_save();
 		else
@@ -462,6 +468,9 @@ static void acpi_processor_idle(void)
 		 * TBD: Can't get time duration while in C1, as resumes
 		 *      go to an ISR rather than here.  Need to instrument
 		 *      base interrupt handler.
+		 *
+		 * Note: the TSC better not stop in C1, sched_clock() will
+		 *       skew otherwise.
 		 */
 		sleep_ticks = 0xFFFFFFFF;
 		break;
@@ -469,28 +478,45 @@ static void acpi_processor_idle(void)
 	case ACPI_STATE_C2:
 		/* Get start time (ticks) */
 		t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
+		/* Tell the scheduler that we are going deep-idle: */
+		sched_clock_idle_sleep_event();
 		/* Invoke C2 */
 		acpi_state_timer_broadcast(pr, cx, 1);
 		acpi_cstate_enter(cx);
 		/* Get end time (ticks) */
 		t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
 
-#ifdef CONFIG_GENERIC_TIME
+#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86_TSC)
 		/* TSC halts in C2, so notify users */
 		mark_tsc_unstable("possible TSC halt in C2");
 #endif
+		/* Compute time (ticks) that we were actually asleep */
+		sleep_ticks = ticks_elapsed(t1, t2);
+
+		/* Tell the scheduler how much we idled: */
+		sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS);
+
 		/* Re-enable interrupts */
 		local_irq_enable();
+		/* Do not account our idle-switching overhead: */
+		sleep_ticks -= cx->latency_ticks + C2_OVERHEAD;
+
 		current_thread_info()->status |= TS_POLLING;
-		/* Compute time (ticks) that we were actually asleep */
-		sleep_ticks =
-		    ticks_elapsed(t1, t2) - cx->latency_ticks - C2_OVERHEAD;
 		acpi_state_timer_broadcast(pr, cx, 0);
 		break;
 
 	case ACPI_STATE_C3:
-
-		if (pr->flags.bm_check) {
+		/*
+		 * disable bus master
+		 * bm_check implies we need ARB_DIS
+		 * !bm_check implies we need cache flush
+		 * bm_control implies whether we can do ARB_DIS
+		 *
+		 * That leaves a case where bm_check is set and bm_control is
+		 * not set. In that case we cannot do much, we enter C3
+		 * without doing anything.
+		 */
+		if (pr->flags.bm_check && pr->flags.bm_control) {
 			if (atomic_inc_return(&c3_cpu_count) ==
 			    num_online_cpus()) {
 				/*
@@ -499,7 +525,7 @@ static void acpi_processor_idle(void)
 				 */
 				acpi_set_register(ACPI_BITREG_ARB_DISABLE, 1);
 			}
-		} else {
+		} else if (!pr->flags.bm_check) {
 			/* SMP with no shared cache... Invalidate cache  */
 			ACPI_FLUSH_CPU_CACHE();
 		}
@@ -508,25 +534,32 @@ static void acpi_processor_idle(void)
 		t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
 		/* Invoke C3 */
 		acpi_state_timer_broadcast(pr, cx, 1);
+		/* Tell the scheduler that we are going deep-idle: */
+		sched_clock_idle_sleep_event();
 		acpi_cstate_enter(cx);
 		/* Get end time (ticks) */
 		t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
-		if (pr->flags.bm_check) {
+		if (pr->flags.bm_check && pr->flags.bm_control) {
 			/* Enable bus master arbitration */
 			atomic_dec(&c3_cpu_count);
 			acpi_set_register(ACPI_BITREG_ARB_DISABLE, 0);
 		}
 
-#ifdef CONFIG_GENERIC_TIME
+#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86_TSC)
 		/* TSC halts in C3, so notify users */
 		mark_tsc_unstable("TSC halts in C3");
 #endif
+		/* Compute time (ticks) that we were actually asleep */
+		sleep_ticks = ticks_elapsed(t1, t2);
+		/* Tell the scheduler how much we idled: */
+		sched_clock_idle_wakeup_event(sleep_ticks*PM_TIMER_TICK_NS);
+
 		/* Re-enable interrupts */
 		local_irq_enable();
+		/* Do not account our idle-switching overhead: */
+		sleep_ticks -= cx->latency_ticks + C3_OVERHEAD;
+
 		current_thread_info()->status |= TS_POLLING;
-		/* Compute time (ticks) that we were actually asleep */
-		sleep_ticks =
-		    ticks_elapsed(t1, t2) - cx->latency_ticks - C3_OVERHEAD;
 		acpi_state_timer_broadcast(pr, cx, 0);
 		break;
 
@@ -959,11 +992,17 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
 	}
 
 	if (pr->flags.bm_check) {
-		/* bus mastering control is necessary */
 		if (!pr->flags.bm_control) {
-			ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-					  "C3 support requires bus mastering control\n"));
-			return;
+			if (pr->flags.has_cst != 1) {
+				/* bus mastering control is necessary */
+				ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+					"C3 support requires BM control\n"));
+				return;
+			} else {
+				/* Here we enter C3 without bus mastering */
+				ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+					"C3 support without BM control\n"));
+			}
 		}
 	} else {
 		/*
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index c4efc0c17f8..463b0247cbc 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -539,7 +539,7 @@ end:
 }
 
 int acpi_processor_preregister_performance(
-		struct acpi_processor_performance **performance)
+		struct acpi_processor_performance *performance)
 {
 	int count, count_target;
 	int retval = 0;
@@ -567,12 +567,12 @@ int acpi_processor_preregister_performance(
 			continue;
 		}
 
-		if (!performance || !performance[i]) {
+		if (!performance || !percpu_ptr(performance, i)) {
 			retval = -EINVAL;
 			continue;
 		}
 
-		pr->performance = performance[i];
+		pr->performance = percpu_ptr(performance, i);
 		cpu_set(i, pr->performance->shared_cpu_map);
 		if (acpi_processor_get_psd(pr)) {
 			retval = -EINVAL;
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index b33486009f4..0b8204e7082 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -44,17 +44,251 @@
 #define _COMPONENT              ACPI_PROCESSOR_COMPONENT
 ACPI_MODULE_NAME("processor_throttling");
 
+static int acpi_processor_get_throttling(struct acpi_processor *pr);
+int acpi_processor_set_throttling(struct acpi_processor *pr, int state);
+
+/*
+ * _TPC - Throttling Present Capabilities
+ */
+static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
+{
+	acpi_status status = 0;
+	unsigned long tpc = 0;
+
+	if (!pr)
+		return -EINVAL;
+	status = acpi_evaluate_integer(pr->handle, "_TPC", NULL, &tpc);
+	if (ACPI_FAILURE(status)) {
+		if (status != AE_NOT_FOUND) {
+			ACPI_EXCEPTION((AE_INFO, status, "Evaluating _TPC"));
+		}
+		return -ENODEV;
+	}
+	pr->throttling_platform_limit = (int)tpc;
+	return 0;
+}
+
+int acpi_processor_tstate_has_changed(struct acpi_processor *pr)
+{
+	return acpi_processor_get_platform_limit(pr);
+}
+
+/*
+ * _PTC - Processor Throttling Control (and status) register location
+ */
+static int acpi_processor_get_throttling_control(struct acpi_processor *pr)
+{
+	int result = 0;
+	acpi_status status = 0;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *ptc = NULL;
+	union acpi_object obj = { 0 };
+
+	status = acpi_evaluate_object(pr->handle, "_PTC", NULL, &buffer);
+	if (ACPI_FAILURE(status)) {
+		if (status != AE_NOT_FOUND) {
+			ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PTC"));
+		}
+		return -ENODEV;
+	}
+
+	ptc = (union acpi_object *)buffer.pointer;
+	if (!ptc || (ptc->type != ACPI_TYPE_PACKAGE)
+	    || (ptc->package.count != 2)) {
+		printk(KERN_ERR PREFIX "Invalid _PTC data\n");
+		result = -EFAULT;
+		goto end;
+	}
+
+	/*
+	 * control_register
+	 */
+
+	obj = ptc->package.elements[0];
+
+	if ((obj.type != ACPI_TYPE_BUFFER)
+	    || (obj.buffer.length < sizeof(struct acpi_ptc_register))
+	    || (obj.buffer.pointer == NULL)) {
+		printk(KERN_ERR PREFIX
+		       "Invalid _PTC data (control_register)\n");
+		result = -EFAULT;
+		goto end;
+	}
+	memcpy(&pr->throttling.control_register, obj.buffer.pointer,
+	       sizeof(struct acpi_ptc_register));
+
+	/*
+	 * status_register
+	 */
+
+	obj = ptc->package.elements[1];
+
+	if ((obj.type != ACPI_TYPE_BUFFER)
+	    || (obj.buffer.length < sizeof(struct acpi_ptc_register))
+	    || (obj.buffer.pointer == NULL)) {
+		printk(KERN_ERR PREFIX "Invalid _PTC data (status_register)\n");
+		result = -EFAULT;
+		goto end;
+	}
+
+	memcpy(&pr->throttling.status_register, obj.buffer.pointer,
+	       sizeof(struct acpi_ptc_register));
+
+      end:
+	kfree(buffer.pointer);
+
+	return result;
+}
+
+/*
+ * _TSS - Throttling Supported States
+ */
+static int acpi_processor_get_throttling_states(struct acpi_processor *pr)
+{
+	int result = 0;
+	acpi_status status = AE_OK;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_buffer format = { sizeof("NNNNN"), "NNNNN" };
+	struct acpi_buffer state = { 0, NULL };
+	union acpi_object *tss = NULL;
+	int i;
+
+	status = acpi_evaluate_object(pr->handle, "_TSS", NULL, &buffer);
+	if (ACPI_FAILURE(status)) {
+		if (status != AE_NOT_FOUND) {
+			ACPI_EXCEPTION((AE_INFO, status, "Evaluating _TSS"));
+		}
+		return -ENODEV;
+	}
+
+	tss = buffer.pointer;
+	if (!tss || (tss->type != ACPI_TYPE_PACKAGE)) {
+		printk(KERN_ERR PREFIX "Invalid _TSS data\n");
+		result = -EFAULT;
+		goto end;
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d throttling states\n",
+			  tss->package.count));
+
+	pr->throttling.state_count = tss->package.count;
+	pr->throttling.states_tss =
+	    kmalloc(sizeof(struct acpi_processor_tx_tss) * tss->package.count,
+		    GFP_KERNEL);
+	if (!pr->throttling.states_tss) {
+		result = -ENOMEM;
+		goto end;
+	}
+
+	for (i = 0; i < pr->throttling.state_count; i++) {
+
+		struct acpi_processor_tx_tss *tx =
+		    (struct acpi_processor_tx_tss *)&(pr->throttling.
+						      states_tss[i]);
+
+		state.length = sizeof(struct acpi_processor_tx_tss);
+		state.pointer = tx;
+
+		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Extracting state %d\n", i));
+
+		status = acpi_extract_package(&(tss->package.elements[i]),
+					      &format, &state);
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status, "Invalid _TSS data"));
+			result = -EFAULT;
+			kfree(pr->throttling.states_tss);
+			goto end;
+		}
+
+		if (!tx->freqpercentage) {
+			printk(KERN_ERR PREFIX
+			       "Invalid _TSS data: freq is zero\n");
+			result = -EFAULT;
+			kfree(pr->throttling.states_tss);
+			goto end;
+		}
+	}
+
+      end:
+	kfree(buffer.pointer);
+
+	return result;
+}
+
+/*
+ * _TSD - T-State Dependencies
+ */
+static int acpi_processor_get_tsd(struct acpi_processor *pr)
+{
+	int result = 0;
+	acpi_status status = AE_OK;
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct acpi_buffer format = { sizeof("NNNNN"), "NNNNN" };
+	struct acpi_buffer state = { 0, NULL };
+	union acpi_object *tsd = NULL;
+	struct acpi_tsd_package *pdomain;
+
+	status = acpi_evaluate_object(pr->handle, "_TSD", NULL, &buffer);
+	if (ACPI_FAILURE(status)) {
+		if (status != AE_NOT_FOUND) {
+			ACPI_EXCEPTION((AE_INFO, status, "Evaluating _TSD"));
+		}
+		return -ENODEV;
+	}
+
+	tsd = buffer.pointer;
+	if (!tsd || (tsd->type != ACPI_TYPE_PACKAGE)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _TSD data\n"));
+		result = -EFAULT;
+		goto end;
+	}
+
+	if (tsd->package.count != 1) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _TSD data\n"));
+		result = -EFAULT;
+		goto end;
+	}
+
+	pdomain = &(pr->throttling.domain_info);
+
+	state.length = sizeof(struct acpi_tsd_package);
+	state.pointer = pdomain;
+
+	status = acpi_extract_package(&(tsd->package.elements[0]),
+				      &format, &state);
+	if (ACPI_FAILURE(status)) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _TSD data\n"));
+		result = -EFAULT;
+		goto end;
+	}
+
+	if (pdomain->num_entries != ACPI_TSD_REV0_ENTRIES) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unknown _TSD:num_entries\n"));
+		result = -EFAULT;
+		goto end;
+	}
+
+	if (pdomain->revision != ACPI_TSD_REV0_REVISION) {
+		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unknown _TSD:revision\n"));
+		result = -EFAULT;
+		goto end;
+	}
+
+      end:
+	kfree(buffer.pointer);
+	return result;
+}
+
 /* --------------------------------------------------------------------------
                               Throttling Control
    -------------------------------------------------------------------------- */
-static int acpi_processor_get_throttling(struct acpi_processor *pr)
+static int acpi_processor_get_throttling_fadt(struct acpi_processor *pr)
 {
 	int state = 0;
 	u32 value = 0;
 	u32 duty_mask = 0;
 	u32 duty_value = 0;
 
-
 	if (!pr)
 		return -EINVAL;
 
@@ -94,13 +328,115 @@ static int acpi_processor_get_throttling(struct acpi_processor *pr)
 	return 0;
 }
 
-int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
+static int acpi_read_throttling_status(struct acpi_processor_throttling
+				       *throttling)
+{
+	int value = -1;
+	switch (throttling->status_register.space_id) {
+	case ACPI_ADR_SPACE_SYSTEM_IO:
+		acpi_os_read_port((acpi_io_address) throttling->status_register.
+				  address, &value,
+				  (u32) throttling->status_register.bit_width *
+				  8);
+		break;
+	case ACPI_ADR_SPACE_FIXED_HARDWARE:
+		printk(KERN_ERR PREFIX
+		       "HARDWARE addr space,NOT supported yet\n");
+		break;
+	default:
+		printk(KERN_ERR PREFIX "Unknown addr space %d\n",
+		       (u32) (throttling->status_register.space_id));
+	}
+	return value;
+}
+
+static int acpi_write_throttling_state(struct acpi_processor_throttling
+				       *throttling, int value)
+{
+	int ret = -1;
+
+	switch (throttling->control_register.space_id) {
+	case ACPI_ADR_SPACE_SYSTEM_IO:
+		acpi_os_write_port((acpi_io_address) throttling->
+				   control_register.address, value,
+				   (u32) throttling->control_register.
+				   bit_width * 8);
+		ret = 0;
+		break;
+	case ACPI_ADR_SPACE_FIXED_HARDWARE:
+		printk(KERN_ERR PREFIX
+		       "HARDWARE addr space,NOT supported yet\n");
+		break;
+	default:
+		printk(KERN_ERR PREFIX "Unknown addr space %d\n",
+		       (u32) (throttling->control_register.space_id));
+	}
+	return ret;
+}
+
+static int acpi_get_throttling_state(struct acpi_processor *pr, int value)
+{
+	int i;
+
+	for (i = 0; i < pr->throttling.state_count; i++) {
+		struct acpi_processor_tx_tss *tx =
+		    (struct acpi_processor_tx_tss *)&(pr->throttling.
+						      states_tss[i]);
+		if (tx->control == value)
+			break;
+	}
+	if (i > pr->throttling.state_count)
+		i = -1;
+	return i;
+}
+
+static int acpi_get_throttling_value(struct acpi_processor *pr, int state)
+{
+	int value = -1;
+	if (state >= 0 && state <= pr->throttling.state_count) {
+		struct acpi_processor_tx_tss *tx =
+		    (struct acpi_processor_tx_tss *)&(pr->throttling.
+						      states_tss[state]);
+		value = tx->control;
+	}
+	return value;
+}
+
+static int acpi_processor_get_throttling_ptc(struct acpi_processor *pr)
+{
+	int state = 0;
+	u32 value = 0;
+
+	if (!pr)
+		return -EINVAL;
+
+	if (!pr->flags.throttling)
+		return -ENODEV;
+
+	pr->throttling.state = 0;
+	local_irq_disable();
+	value = acpi_read_throttling_status(&pr->throttling);
+	if (value >= 0) {
+		state = acpi_get_throttling_state(pr, value);
+		pr->throttling.state = state;
+	}
+	local_irq_enable();
+
+	return 0;
+}
+
+static int acpi_processor_get_throttling(struct acpi_processor *pr)
+{
+	return pr->throttling.acpi_processor_get_throttling(pr);
+}
+
+static int acpi_processor_set_throttling_fadt(struct acpi_processor *pr,
+					      int state)
 {
 	u32 value = 0;
 	u32 duty_mask = 0;
 	u32 duty_value = 0;
 
-
 	if (!pr)
 		return -EINVAL;
 
@@ -113,6 +449,8 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
 	if (state == pr->throttling.state)
 		return 0;
 
+	if (state < pr->throttling_platform_limit)
+		return -EPERM;
 	/*
 	 * Calculate the duty_value and duty_mask.
 	 */
@@ -165,13 +503,49 @@ int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
 	return 0;
 }
 
+static int acpi_processor_set_throttling_ptc(struct acpi_processor *pr,
+					     int state)
+{
+	u32 value = 0;
+
+	if (!pr)
+		return -EINVAL;
+
+	if ((state < 0) || (state > (pr->throttling.state_count - 1)))
+		return -EINVAL;
+
+	if (!pr->flags.throttling)
+		return -ENODEV;
+
+	if (state == pr->throttling.state)
+		return 0;
+
+	if (state < pr->throttling_platform_limit)
+		return -EPERM;
+
+	local_irq_disable();
+
+	value = acpi_get_throttling_value(pr, state);
+	if (value >= 0) {
+		acpi_write_throttling_state(&pr->throttling, value);
+		pr->throttling.state = state;
+	}
+	local_irq_enable();
+
+	return 0;
+}
+
+int acpi_processor_set_throttling(struct acpi_processor *pr, int state)
+{
+	return pr->throttling.acpi_processor_set_throttling(pr, state);
+}
+
 int acpi_processor_get_throttling_info(struct acpi_processor *pr)
 {
 	int result = 0;
 	int step = 0;
 	int i = 0;
 
-
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 			  "pblk_address[0x%08x] duty_offset[%d] duty_width[%d]\n",
 			  pr->throttling.address,
@@ -181,7 +555,26 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
 	if (!pr)
 		return -EINVAL;
 
-	/* TBD: Support ACPI 2.0 objects */
+	/*
+	 * Evaluate _PTC, _TSS and _TPC
+	 * They must all be present or none of them can be used.
+	 */
+	if (acpi_processor_get_throttling_control(pr) ||
+		acpi_processor_get_throttling_states(pr) ||
+		acpi_processor_get_platform_limit(pr))
+	{
+		pr->throttling.acpi_processor_get_throttling =
+		    &acpi_processor_get_throttling_fadt;
+		pr->throttling.acpi_processor_set_throttling =
+		    &acpi_processor_set_throttling_fadt;
+	} else {
+		pr->throttling.acpi_processor_get_throttling =
+		    &acpi_processor_get_throttling_ptc;
+		pr->throttling.acpi_processor_set_throttling =
+		    &acpi_processor_set_throttling_ptc;
+	}
+
+	acpi_processor_get_tsd(pr);
 
 	if (!pr->throttling.address) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No throttling register\n"));
@@ -262,7 +655,6 @@ static int acpi_processor_throttling_seq_show(struct seq_file *seq,
 	int i = 0;
 	int result = 0;
 
-
 	if (!pr)
 		goto end;
 
@@ -280,15 +672,27 @@ static int acpi_processor_throttling_seq_show(struct seq_file *seq,
 	}
 
 	seq_printf(seq, "state count:             %d\n"
-		   "active state:            T%d\n",
-		   pr->throttling.state_count, pr->throttling.state);
+		   "active state:            T%d\n"
+		   "state available: T%d to T%d\n",
+		   pr->throttling.state_count, pr->throttling.state,
+		   pr->throttling_platform_limit,
+		   pr->throttling.state_count - 1);
 
 	seq_puts(seq, "states:\n");
-	for (i = 0; i < pr->throttling.state_count; i++)
-		seq_printf(seq, "   %cT%d:                  %02d%%\n",
-			   (i == pr->throttling.state ? '*' : ' '), i,
-			   (pr->throttling.states[i].performance ? pr->
-			    throttling.states[i].performance / 10 : 0));
+	if (pr->throttling.acpi_processor_get_throttling ==
+			acpi_processor_get_throttling_fadt) {
+		for (i = 0; i < pr->throttling.state_count; i++)
+			seq_printf(seq, "   %cT%d:                  %02d%%\n",
+				   (i == pr->throttling.state ? '*' : ' '), i,
+				   (pr->throttling.states[i].performance ? pr->
+				    throttling.states[i].performance / 10 : 0));
+	} else {
+		for (i = 0; i < pr->throttling.state_count; i++)
+			seq_printf(seq, "   %cT%d:                  %02d%%\n",
+				   (i == pr->throttling.state ? '*' : ' '), i,
+				   (int)pr->throttling.states_tss[i].
+				   freqpercentage);
+	}
 
       end:
 	return 0;
@@ -301,7 +705,7 @@ static int acpi_processor_throttling_open_fs(struct inode *inode,
 			   PDE(inode)->data);
 }
 
-static ssize_t acpi_processor_write_throttling(struct file * file,
+static ssize_t acpi_processor_write_throttling(struct file *file,
 					       const char __user * buffer,
 					       size_t count, loff_t * data)
 {
@@ -310,7 +714,6 @@ static ssize_t acpi_processor_write_throttling(struct file * file,
 	struct acpi_processor *pr = m->private;
 	char state_string[12] = { '\0' };
 
-
 	if (!pr || (count > sizeof(state_string) - 1))
 		return -EINVAL;
 
diff --git a/drivers/acpi/resources/rsxface.c b/drivers/acpi/resources/rsxface.c
index f63813a358c..4c3fd4cdaf7 100644
--- a/drivers/acpi/resources/rsxface.c
+++ b/drivers/acpi/resources/rsxface.c
@@ -474,8 +474,6 @@ acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context)
 	return (AE_CTRL_TERMINATE);
 }
 
-ACPI_EXPORT_SYMBOL(acpi_rs_match_vendor_resource)
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_walk_resources
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index c1bae106833..a578986e321 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -38,7 +38,6 @@
 #define ACPI_SBS_CLASS			"sbs"
 #define ACPI_AC_CLASS			"ac_adapter"
 #define ACPI_BATTERY_CLASS		"battery"
-#define ACPI_SBS_HID			"ACPI0002"
 #define ACPI_SBS_DEVICE_NAME		"Smart Battery System"
 #define ACPI_SBS_FILE_INFO		"info"
 #define ACPI_SBS_FILE_STATE		"state"
@@ -124,10 +123,17 @@ static int acpi_sbs_add(struct acpi_device *device);
 static int acpi_sbs_remove(struct acpi_device *device, int type);
 static int acpi_sbs_resume(struct acpi_device *device);
 
+static const struct acpi_device_id sbs_device_ids[] = {
+	{"ACPI0001", 0},
+	{"ACPI0005", 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, sbs_device_ids);
+
 static struct acpi_driver acpi_sbs_driver = {
 	.name = "sbs",
 	.class = ACPI_SBS_CLASS,
-	.ids = ACPI_SBS_HID,
+	.ids = sbs_device_ids,
 	.ops = {
 		.add = acpi_sbs_add,
 		.remove = acpi_sbs_remove,
@@ -176,10 +182,8 @@ struct acpi_battery {
 };
 
 struct acpi_sbs {
-	acpi_handle handle;
 	int base;
 	struct acpi_device *device;
-	struct acpi_ec_smbus *smbus;
 	struct mutex mutex;
 	int sbsm_present;
 	int sbsm_batteries_supported;
@@ -436,11 +440,12 @@ static int acpi_sbs_generate_event(struct acpi_device *device,
 	strcpy(acpi_device_bid(device), bid);
 	strcpy(acpi_device_class(device), class);
 
-	result = acpi_bus_generate_event(device, event, state);
+	result = acpi_bus_generate_proc_event(device, event, state);
 
 	strcpy(acpi_device_bid(device), bid_saved);
 	strcpy(acpi_device_class(device), class_saved);
 
+	acpi_bus_generate_netlink_event(class, bid, event, state);
 	return result;
 }
 
@@ -511,7 +516,7 @@ static int acpi_sbsm_get_info(struct acpi_sbs *sbs)
 				"acpi_sbs_read_word() failed"));
 		goto end;
 	}
-
+	sbs->sbsm_present = 1;
 	sbs->sbsm_batteries_supported = battery_system_info & 0x000f;
 
       end:
@@ -1411,7 +1416,7 @@ static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type)
 	char dir_name[32];
 	int do_battery_init = 0, do_ac_init = 0;
 	int old_remaining_capacity = 0;
-	int update_ac = 1, update_battery = 1;
+	int update_battery = 1;
 	int up_tm = update_time;
 
 	if (sbs_zombie(sbs)) {
@@ -1431,10 +1436,6 @@ static int acpi_sbs_update_run(struct acpi_sbs *sbs, int id, int data_type)
 
 	sbs->run_cnt++;
 
-	if (!update_ac && !update_battery) {
-		goto end;
-	}
-
 	old_ac_present = sbs->ac.ac_present;
 
 	result = acpi_ac_get_present(sbs);
@@ -1630,13 +1631,12 @@ static int acpi_sbs_add(struct acpi_device *device)
 {
 	struct acpi_sbs *sbs = NULL;
 	int result = 0, remove_result = 0;
-	unsigned long sbs_obj;
 	int id;
 	acpi_status status = AE_OK;
 	unsigned long val;
 
 	status =
-	    acpi_evaluate_integer(device->parent->handle, "_EC", NULL, &val);
+	    acpi_evaluate_integer(device->handle, "_EC", NULL, &val);
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, AE_ERROR, "Error obtaining _EC"));
 		return -EIO;
@@ -1653,7 +1653,7 @@ static int acpi_sbs_add(struct acpi_device *device)
 
 	sbs_mutex_lock(sbs);
 
-	sbs->base = (val & 0xff00ull) >> 8;
+	sbs->base = 0xff & (val >> 8);
 	sbs->device = device;
 
 	strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
@@ -1665,24 +1665,10 @@ static int acpi_sbs_add(struct acpi_device *device)
 		ACPI_EXCEPTION((AE_INFO, AE_ERROR, "acpi_ac_add() failed"));
 		goto end;
 	}
-	status = acpi_evaluate_integer(device->handle, "_SBS", NULL, &sbs_obj);
-	if (status) {
-		ACPI_EXCEPTION((AE_INFO, status,
-				"acpi_evaluate_integer() failed"));
-		result = -EIO;
-		goto end;
-	}
-	if (sbs_obj > 0) {
-		result = acpi_sbsm_get_info(sbs);
-		if (result) {
-			ACPI_EXCEPTION((AE_INFO, AE_ERROR,
-					"acpi_sbsm_get_info() failed"));
-			goto end;
-		}
-		sbs->sbsm_present = 1;
-	}
 
-	if (sbs->sbsm_present == 0) {
+	acpi_sbsm_get_info(sbs);
+
+	if (!sbs->sbsm_present) {
 		result = acpi_battery_add(sbs, 0);
 		if (result) {
 			ACPI_EXCEPTION((AE_INFO, AE_ERROR,
@@ -1702,8 +1688,6 @@ static int acpi_sbs_add(struct acpi_device *device)
 		}
 	}
 
-	sbs->handle = device->handle;
-
 	init_timer(&sbs->update_timer);
 	result = acpi_check_update_proc(sbs);
 	if (result)
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 6b3b8a52247..5b4d462117c 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -16,7 +16,7 @@ ACPI_MODULE_NAME("scan");
 extern struct acpi_device *acpi_root;
 
 #define ACPI_BUS_CLASS			"system_bus"
-#define ACPI_BUS_HID			"ACPI_BUS"
+#define ACPI_BUS_HID			"LNXSYBUS"
 #define ACPI_BUS_DEVICE_NAME		"System Bus"
 
 static LIST_HEAD(acpi_device_list);
@@ -29,6 +29,63 @@ struct acpi_device_bus_id{
 	unsigned int instance_no;
 	struct list_head node;
 };
+
+/*
+ * Creates hid/cid(s) string needed for modalias and uevent
+ * e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get:
+ * char *modalias: "acpi:IBM0001:ACPI0001"
+*/
+static int create_modalias(struct acpi_device *acpi_dev, char *modalias,
+			   int size)
+{
+	int len;
+
+	if (!acpi_dev->flags.hardware_id)
+		return -ENODEV;
+
+	len = snprintf(modalias, size, "acpi:%s:",
+		       acpi_dev->pnp.hardware_id);
+	if (len < 0 || len >= size)
+		return -EINVAL;
+	size -= len;
+
+	if (acpi_dev->flags.compatible_ids) {
+		struct acpi_compatible_id_list *cid_list;
+		int i;
+		int count;
+
+		cid_list = acpi_dev->pnp.cid_list;
+		for (i = 0; i < cid_list->count; i++) {
+			count = snprintf(&modalias[len], size, "%s:",
+					 cid_list->id[i].value);
+			if (count < 0 || count >= size) {
+				printk(KERN_ERR "acpi: %s cid[%i] exceeds event buffer size",
+				       acpi_dev->pnp.device_name, i);
+				break;
+			}
+			len += count;
+			size -= count;
+		}
+	}
+
+	modalias[len] = '\0';
+	return len;
+}
+
+static ssize_t
+acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, char *buf) {
+	struct acpi_device *acpi_dev = to_acpi_device(dev);
+	int len;
+
+	/* Device has no HID and no CID or string is >1024 */
+	len = create_modalias(acpi_dev, buf, 1024);
+	if (len <= 0)
+		return 0;
+	buf[len++] = '\n';
+	return len;
+}
+static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
+
 static int acpi_eject_operation(acpi_handle handle, int lockable)
 {
 	struct acpi_object_list arg_list;
@@ -154,6 +211,12 @@ static int acpi_device_setup_files(struct acpi_device *dev)
 			goto end;
 	}
 
+	if (dev->flags.hardware_id || dev->flags.compatible_ids){
+		result = device_create_file(&dev->dev, &dev_attr_modalias);
+		if(result)
+			goto end;
+	}
+
         /*
          * If device has _EJ0, 'eject' file is created that is used to trigger
          * hot-removal function from userland.
@@ -178,6 +241,9 @@ static void acpi_device_remove_files(struct acpi_device *dev)
 	if (ACPI_SUCCESS(status))
 		device_remove_file(&dev->dev, &dev_attr_eject);
 
+	if (dev->flags.hardware_id || dev->flags.compatible_ids)
+		device_remove_file(&dev->dev, &dev_attr_modalias);
+
 	if(dev->flags.hardware_id)
 		device_remove_file(&dev->dev, &dev_attr_hid);
 	if(dev->handle)
@@ -186,6 +252,37 @@ static void acpi_device_remove_files(struct acpi_device *dev)
 /* --------------------------------------------------------------------------
 			ACPI Bus operations
    -------------------------------------------------------------------------- */
+
+int acpi_match_device_ids(struct acpi_device *device,
+			  const struct acpi_device_id *ids)
+{
+	const struct acpi_device_id *id;
+
+	if (device->flags.hardware_id) {
+		for (id = ids; id->id[0]; id++) {
+			if (!strcmp((char*)id->id, device->pnp.hardware_id))
+				return 0;
+		}
+	}
+
+	if (device->flags.compatible_ids) {
+		struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
+		int i;
+
+		for (id = ids; id->id[0]; id++) {
+			/* compare multiple _CID entries against driver ids */
+			for (i = 0; i < cid_list->count; i++) {
+				if (!strcmp((char*)id->id,
+					    cid_list->id[i].value))
+					return 0;
+			}
+		}
+	}
+
+	return -ENOENT;
+}
+EXPORT_SYMBOL(acpi_match_device_ids);
+
 static void acpi_device_release(struct device *dev)
 {
 	struct acpi_device *acpi_dev = to_acpi_device(dev);
@@ -219,37 +316,21 @@ static int acpi_bus_match(struct device *dev, struct device_driver *drv)
 	struct acpi_device *acpi_dev = to_acpi_device(dev);
 	struct acpi_driver *acpi_drv = to_acpi_driver(drv);
 
-	return !acpi_match_ids(acpi_dev, acpi_drv->ids);
+	return !acpi_match_device_ids(acpi_dev, acpi_drv->ids);
 }
 
-static int acpi_device_uevent(struct device *dev, char **envp, int num_envp,
-	char *buffer, int buffer_size)
+static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
 	struct acpi_device *acpi_dev = to_acpi_device(dev);
-	int i = 0, length = 0, ret = 0;
+	int len;
 
-	if (acpi_dev->flags.hardware_id)
-		ret = add_uevent_var(envp, num_envp, &i,
-			buffer, buffer_size, &length,
-			"HWID=%s", acpi_dev->pnp.hardware_id);
-	if (ret)
+	if (add_uevent_var(env, "MODALIAS="))
 		return -ENOMEM;
-	if (acpi_dev->flags.compatible_ids) {
-		int j;
-		struct acpi_compatible_id_list *cid_list;
-
-		cid_list = acpi_dev->pnp.cid_list;
-
-		for (j = 0; j < cid_list->count; j++) {
-			ret = add_uevent_var(envp, num_envp, &i, buffer,
-				buffer_size, &length, "COMPTID=%s",
-				cid_list->id[j].value);
-			if (ret)
-				return -ENOMEM;
-		}
-	}
-
-	envp[i] = NULL;
+	len = create_modalias(acpi_dev, &env->buf[env->buflen - 1],
+			      sizeof(env->buf) - env->buflen);
+	if (len >= (sizeof(env->buf) - env->buflen))
+		return -ENOMEM;
+	env->buflen += len;
 	return 0;
 }
 
@@ -543,25 +624,6 @@ void acpi_bus_data_handler(acpi_handle handle, u32 function, void *context)
 	return;
 }
 
-int acpi_match_ids(struct acpi_device *device, char *ids)
-{
-	if (device->flags.hardware_id)
-		if (strstr(ids, device->pnp.hardware_id))
-			return 0;
-
-	if (device->flags.compatible_ids) {
-		struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
-		int i;
-
-		/* compare multiple _CID entries against driver ids */
-		for (i = 0; i < cid_list->count; i++) {
-			if (strstr(ids, cid_list->id[i].value))
-				return 0;
-		}
-	}
-	return -ENOENT;
-}
-
 static int acpi_bus_get_perf_flags(struct acpi_device *device)
 {
 	device->performance.state = ACPI_STATE_UNKNOWN;
@@ -624,6 +686,13 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
 	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 	union acpi_object *package = NULL;
 
+	struct acpi_device_id button_device_ids[] = {
+		{"PNP0C0D", 0},
+		{"PNP0C0C", 0},
+		{"PNP0C0E", 0},
+		{"", 0},
+	};
+
 
 	/* _PRW */
 	status = acpi_evaluate_object(device->handle, "_PRW", NULL, &buffer);
@@ -643,7 +712,7 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device)
 
 	device->wakeup.flags.valid = 1;
 	/* Power button, Lid switch always enable wakeup */
-	if (!acpi_match_ids(device, "PNP0C0D,PNP0C0C,PNP0C0E"))
+	if (!acpi_match_device_ids(device, button_device_ids))
 		device->wakeup.flags.run_wake = 1;
 
       end:
diff --git a/drivers/acpi/sleep/Makefile b/drivers/acpi/sleep/Makefile
index d6c017709c8..f1fb888c2d2 100644
--- a/drivers/acpi/sleep/Makefile
+++ b/drivers/acpi/sleep/Makefile
@@ -1,5 +1,5 @@
-obj-y					:= poweroff.o wakeup.o
-obj-$(CONFIG_ACPI_SLEEP)		+= main.o
-obj-$(CONFIG_ACPI_SLEEP_PROC_FS)	+= proc.o
+obj-y					:= wakeup.o
+obj-y					+= main.o
+obj-$(CONFIG_ACPI_SLEEP)		+= proc.o
 
 EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index bc7e16ec839..5055acf2163 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -15,12 +15,41 @@
 #include <linux/dmi.h>
 #include <linux/device.h>
 #include <linux/suspend.h>
+
+#include <asm/io.h>
+
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 #include "sleep.h"
 
 u8 sleep_states[ACPI_S_STATE_COUNT];
 
+#ifdef CONFIG_PM_SLEEP
+static u32 acpi_target_sleep_state = ACPI_STATE_S0;
+#endif
+
+int acpi_sleep_prepare(u32 acpi_state)
+{
+#ifdef CONFIG_ACPI_SLEEP
+	/* do we have a wakeup address for S2 and S3? */
+	if (acpi_state == ACPI_STATE_S3) {
+		if (!acpi_wakeup_address) {
+			return -EFAULT;
+		}
+		acpi_set_firmware_waking_vector((acpi_physical_address)
+						virt_to_phys((void *)
+							     acpi_wakeup_address));
+
+	}
+	ACPI_FLUSH_CPU_CACHE();
+	acpi_enable_wakeup_device_prep(acpi_state);
+#endif
+	acpi_gpe_sleep_prepare(acpi_state);
+	acpi_enter_sleep_state_prep(acpi_state);
+	return 0;
+}
+
+#ifdef CONFIG_SUSPEND
 static struct pm_ops acpi_pm_ops;
 
 extern void do_suspend_lowlevel(void);
@@ -35,34 +64,49 @@ static u32 acpi_suspend_states[] = {
 static int init_8259A_after_S1;
 
 /**
+ *	acpi_pm_set_target - Set the target system sleep state to the state
+ *		associated with given @pm_state, if supported.
+ */
+
+static int acpi_pm_set_target(suspend_state_t pm_state)
+{
+	u32 acpi_state = acpi_suspend_states[pm_state];
+	int error = 0;
+
+	if (sleep_states[acpi_state]) {
+		acpi_target_sleep_state = acpi_state;
+	} else {
+		printk(KERN_ERR "ACPI does not support this state: %d\n",
+			pm_state);
+		error = -ENOSYS;
+	}
+	return error;
+}
+
+/**
  *	acpi_pm_prepare - Do preliminary suspend work.
- *	@pm_state:		suspend state we're entering.
+ *	@pm_state: ignored
  *
- *	Make sure we support the state. If we do, and we need it, set the
- *	firmware waking vector and do arch-specific nastiness to get the 
- *	wakeup code to the waking vector. 
+ *	If necessary, set the firmware waking vector and do arch-specific
+ *	nastiness to get the wakeup code to the waking vector.
  */
 
-extern int acpi_sleep_prepare(u32 acpi_state);
-extern void acpi_power_off(void);
-
 static int acpi_pm_prepare(suspend_state_t pm_state)
 {
-	u32 acpi_state = acpi_suspend_states[pm_state];
+	int error = acpi_sleep_prepare(acpi_target_sleep_state);
 
-	if (!sleep_states[acpi_state]) {
-		printk("acpi_pm_prepare does not support %d \n", pm_state);
-		return -EPERM;
-	}
-	return acpi_sleep_prepare(acpi_state);
+	if (error)
+		acpi_target_sleep_state = ACPI_STATE_S0;
+
+	return error;
 }
 
 /**
  *	acpi_pm_enter - Actually enter a sleep state.
- *	@pm_state:		State we're entering.
+ *	@pm_state: ignored
  *
- *	Flush caches and go to sleep. For STR or STD, we have to call 
- *	arch-specific assembly, which in turn call acpi_enter_sleep_state().
+ *	Flush caches and go to sleep. For STR we have to call arch-specific
+ *	assembly, which in turn call acpi_enter_sleep_state().
  *	It's unfortunate, but it works. Please fix if you're feeling frisky.
  */
 
@@ -70,31 +114,31 @@ static int acpi_pm_enter(suspend_state_t pm_state)
 {
 	acpi_status status = AE_OK;
 	unsigned long flags = 0;
-	u32 acpi_state = acpi_suspend_states[pm_state];
+	u32 acpi_state = acpi_target_sleep_state;
 
 	ACPI_FLUSH_CPU_CACHE();
 
 	/* Do arch specific saving of state. */
-	if (pm_state > PM_SUSPEND_STANDBY) {
+	if (acpi_state == ACPI_STATE_S3) {
 		int error = acpi_save_state_mem();
-		if (error)
+
+		if (error) {
+			acpi_target_sleep_state = ACPI_STATE_S0;
 			return error;
+		}
 	}
 
 	local_irq_save(flags);
 	acpi_enable_wakeup_device(acpi_state);
-	switch (pm_state) {
-	case PM_SUSPEND_STANDBY:
+	switch (acpi_state) {
+	case ACPI_STATE_S1:
 		barrier();
 		status = acpi_enter_sleep_state(acpi_state);
 		break;
 
-	case PM_SUSPEND_MEM:
+	case ACPI_STATE_S3:
 		do_suspend_lowlevel();
 		break;
-
-	default:
-		return -EINVAL;
 	}
 
 	/* ACPI 3.0 specs (P62) says that it's the responsabilty
@@ -107,12 +151,8 @@ static int acpi_pm_enter(suspend_state_t pm_state)
 	local_irq_restore(flags);
 	printk(KERN_DEBUG "Back to C!\n");
 
-	/* restore processor state
-	 * We should only be here if we're coming back from STR or STD.
-	 * And, in the case of the latter, the memory image should have already
-	 * been loaded from disk.
-	 */
-	if (pm_state > PM_SUSPEND_STANDBY)
+	/* restore processor state */
+	if (acpi_state == ACPI_STATE_S3)
 		acpi_restore_state_mem();
 
 	return ACPI_SUCCESS(status) ? 0 : -EFAULT;
@@ -120,7 +160,7 @@ static int acpi_pm_enter(suspend_state_t pm_state)
 
 /**
  *	acpi_pm_finish - Finish up suspend sequence.
- *	@pm_state:		State we're coming out of.
+ *	@pm_state: ignored
  *
  *	This is called after we wake back up (or if entering the sleep state
  *	failed). 
@@ -128,7 +168,7 @@ static int acpi_pm_enter(suspend_state_t pm_state)
 
 static int acpi_pm_finish(suspend_state_t pm_state)
 {
-	u32 acpi_state = acpi_suspend_states[pm_state];
+	u32 acpi_state = acpi_target_sleep_state;
 
 	acpi_leave_sleep_state(acpi_state);
 	acpi_disable_wakeup_device(acpi_state);
@@ -136,28 +176,17 @@ static int acpi_pm_finish(suspend_state_t pm_state)
 	/* reset firmware waking vector */
 	acpi_set_firmware_waking_vector((acpi_physical_address) 0);
 
+	acpi_target_sleep_state = ACPI_STATE_S0;
+
+#ifdef CONFIG_X86
 	if (init_8259A_after_S1) {
 		printk("Broken toshiba laptop -> kicking interrupts\n");
 		init_8259A(0);
 	}
+#endif
 	return 0;
 }
 
-int acpi_suspend(u32 acpi_state)
-{
-	suspend_state_t states[] = {
-		[1] = PM_SUSPEND_STANDBY,
-		[3] = PM_SUSPEND_MEM,
-		[5] = PM_SUSPEND_MAX
-	};
-
-	if (acpi_state < 6 && states[acpi_state])
-		return pm_suspend(states[acpi_state]);
-	if (acpi_state == 4)
-		return hibernate();
-	return -EINVAL;
-}
-
 static int acpi_pm_state_valid(suspend_state_t pm_state)
 {
 	u32 acpi_state;
@@ -176,12 +205,34 @@ static int acpi_pm_state_valid(suspend_state_t pm_state)
 
 static struct pm_ops acpi_pm_ops = {
 	.valid = acpi_pm_state_valid,
+	.set_target = acpi_pm_set_target,
 	.prepare = acpi_pm_prepare,
 	.enter = acpi_pm_enter,
 	.finish = acpi_pm_finish,
 };
 
-#ifdef CONFIG_SOFTWARE_SUSPEND
+/*
+ * Toshiba fails to preserve interrupts over S1, reinitialization
+ * of 8259 is needed after S1 resume.
+ */
+static int __init init_ints_after_s1(const struct dmi_system_id *d)
+{
+	printk(KERN_WARNING "%s with broken S1 detected.\n", d->ident);
+	init_8259A_after_S1 = 1;
+	return 0;
+}
+
+static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
+	{
+	 .callback = init_ints_after_s1,
+	 .ident = "Toshiba Satellite 4030cdt",
+	 .matches = {DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),},
+	 },
+	{},
+};
+#endif /* CONFIG_SUSPEND */
+
+#ifdef CONFIG_HIBERNATION
 static int acpi_hibernation_prepare(void)
 {
 	return acpi_sleep_prepare(ACPI_STATE_S4);
@@ -210,69 +261,180 @@ static void acpi_hibernation_finish(void)
 
 	/* reset firmware waking vector */
 	acpi_set_firmware_waking_vector((acpi_physical_address) 0);
+}
 
-	if (init_8259A_after_S1) {
-		printk("Broken toshiba laptop -> kicking interrupts\n");
-		init_8259A(0);
-	}
+static int acpi_hibernation_pre_restore(void)
+{
+	acpi_status status;
+
+	status = acpi_hw_disable_all_gpes();
+
+	return ACPI_SUCCESS(status) ? 0 : -EFAULT;
+}
+
+static void acpi_hibernation_restore_cleanup(void)
+{
+	acpi_hw_enable_all_runtime_gpes();
 }
 
 static struct hibernation_ops acpi_hibernation_ops = {
 	.prepare = acpi_hibernation_prepare,
 	.enter = acpi_hibernation_enter,
 	.finish = acpi_hibernation_finish,
+	.pre_restore = acpi_hibernation_pre_restore,
+	.restore_cleanup = acpi_hibernation_restore_cleanup,
 };
-#endif				/* CONFIG_SOFTWARE_SUSPEND */
+#endif				/* CONFIG_HIBERNATION */
 
-/*
- * Toshiba fails to preserve interrupts over S1, reinitialization
- * of 8259 is needed after S1 resume.
+int acpi_suspend(u32 acpi_state)
+{
+	suspend_state_t states[] = {
+		[1] = PM_SUSPEND_STANDBY,
+		[3] = PM_SUSPEND_MEM,
+		[5] = PM_SUSPEND_MAX
+	};
+
+	if (acpi_state < 6 && states[acpi_state])
+		return pm_suspend(states[acpi_state]);
+	if (acpi_state == 4)
+		return hibernate();
+	return -EINVAL;
+}
+
+#ifdef CONFIG_PM_SLEEP
+/**
+ *	acpi_pm_device_sleep_state - return preferred power state of ACPI device
+ *		in the system sleep state given by %acpi_target_sleep_state
+ *	@dev: device to examine
+ *	@wake: if set, the device should be able to wake up the system
+ *	@d_min_p: used to store the upper limit of allowed states range
+ *	Return value: preferred power state of the device on success, -ENODEV on
+ *		failure (ie. if there's no 'struct acpi_device' for @dev)
+ *
+ *	Find the lowest power (highest number) ACPI device power state that
+ *	device @dev can be in while the system is in the sleep state represented
+ *	by %acpi_target_sleep_state.  If @wake is nonzero, the device should be
+ *	able to wake up the system from this sleep state.  If @d_min_p is set,
+ *	the highest power (lowest number) device power state of @dev allowed
+ *	in this system sleep state is stored at the location pointed to by it.
+ *
+ *	The caller must ensure that @dev is valid before using this function.
+ *	The caller is also responsible for figuring out if the device is
+ *	supposed to be able to wake up the system and passing this information
+ *	via @wake.
  */
-static int __init init_ints_after_s1(struct dmi_system_id *d)
+
+int acpi_pm_device_sleep_state(struct device *dev, int wake, int *d_min_p)
 {
-	printk(KERN_WARNING "%s with broken S1 detected.\n", d->ident);
-	init_8259A_after_S1 = 1;
-	return 0;
+	acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
+	struct acpi_device *adev;
+	char acpi_method[] = "_SxD";
+	unsigned long d_min, d_max;
+
+	if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &adev))) {
+		printk(KERN_DEBUG "ACPI handle has no context!\n");
+		return -ENODEV;
+	}
+
+	acpi_method[2] = '0' + acpi_target_sleep_state;
+	/*
+	 * If the sleep state is S0, we will return D3, but if the device has
+	 * _S0W, we will use the value from _S0W
+	 */
+	d_min = ACPI_STATE_D0;
+	d_max = ACPI_STATE_D3;
+
+	/*
+	 * If present, _SxD methods return the minimum D-state (highest power
+	 * state) we can use for the corresponding S-states.  Otherwise, the
+	 * minimum D-state is D0 (ACPI 3.x).
+	 *
+	 * NOTE: We rely on acpi_evaluate_integer() not clobbering the integer
+	 * provided -- that's our fault recovery, we ignore retval.
+	 */
+	if (acpi_target_sleep_state > ACPI_STATE_S0)
+		acpi_evaluate_integer(handle, acpi_method, NULL, &d_min);
+
+	/*
+	 * If _PRW says we can wake up the system from the target sleep state,
+	 * the D-state returned by _SxD is sufficient for that (we assume a
+	 * wakeup-aware driver if wake is set).  Still, if _SxW exists
+	 * (ACPI 3.x), it should return the maximum (lowest power) D-state that
+	 * can wake the system.  _S0W may be valid, too.
+	 */
+	if (acpi_target_sleep_state == ACPI_STATE_S0 ||
+	    (wake && adev->wakeup.state.enabled &&
+	     adev->wakeup.sleep_state <= acpi_target_sleep_state)) {
+		acpi_method[3] = 'W';
+		acpi_evaluate_integer(handle, acpi_method, NULL, &d_max);
+		/* Sanity check */
+		if (d_max < d_min)
+			d_min = d_max;
+	}
+
+	if (d_min_p)
+		*d_min_p = d_min;
+	return d_max;
 }
+#endif
 
-static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
-	{
-	 .callback = init_ints_after_s1,
-	 .ident = "Toshiba Satellite 4030cdt",
-	 .matches = {DMI_MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),},
-	 },
-	{},
-};
+static void acpi_power_off_prepare(void)
+{
+	/* Prepare to power off the system */
+	acpi_sleep_prepare(ACPI_STATE_S5);
+}
+
+static void acpi_power_off(void)
+{
+	/* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
+	printk("%s called\n", __FUNCTION__);
+	local_irq_disable();
+	acpi_enter_sleep_state(ACPI_STATE_S5);
+}
 
 int __init acpi_sleep_init(void)
 {
+	acpi_status status;
+	u8 type_a, type_b;
+#ifdef CONFIG_SUSPEND
 	int i = 0;
 
 	dmi_check_system(acpisleep_dmi_table);
+#endif
 
 	if (acpi_disabled)
 		return 0;
 
-	printk(KERN_INFO PREFIX "(supports");
-	for (i = 0; i < ACPI_S_STATE_COUNT; i++) {
-		acpi_status status;
-		u8 type_a, type_b;
+	sleep_states[ACPI_STATE_S0] = 1;
+	printk(KERN_INFO PREFIX "(supports S0");
+
+#ifdef CONFIG_SUSPEND
+	for (i = ACPI_STATE_S1; i < ACPI_STATE_S4; i++) {
 		status = acpi_get_sleep_type_data(i, &type_a, &type_b);
 		if (ACPI_SUCCESS(status)) {
 			sleep_states[i] = 1;
 			printk(" S%d", i);
 		}
 	}
-	printk(")\n");
 
 	pm_set_ops(&acpi_pm_ops);
+#endif
 
-#ifdef CONFIG_SOFTWARE_SUSPEND
-	if (sleep_states[ACPI_STATE_S4])
+#ifdef CONFIG_HIBERNATION
+	status = acpi_get_sleep_type_data(ACPI_STATE_S4, &type_a, &type_b);
+	if (ACPI_SUCCESS(status)) {
 		hibernation_set_ops(&acpi_hibernation_ops);
-#else
-	sleep_states[ACPI_STATE_S4] = 0;
+		sleep_states[ACPI_STATE_S4] = 1;
+		printk(" S4");
+	}
 #endif
-
+	status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
+	if (ACPI_SUCCESS(status)) {
+		sleep_states[ACPI_STATE_S5] = 1;
+		printk(" S5");
+		pm_power_off_prepare = acpi_power_off_prepare;
+		pm_power_off = acpi_power_off;
+	}
+	printk(")\n");
 	return 0;
 }
diff --git a/drivers/acpi/sleep/poweroff.c b/drivers/acpi/sleep/poweroff.c
deleted file mode 100644
index d9801eff648..00000000000
--- a/drivers/acpi/sleep/poweroff.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * poweroff.c - ACPI handler for powering off the system.
- *
- * AKA S5, but it is independent of whether or not the kernel supports
- * any other sleep support in the system.
- *
- * Copyright (c) 2005 Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
- *
- * This file is released under the GPLv2.
- */
-
-#include <linux/pm.h>
-#include <linux/init.h>
-#include <acpi/acpi_bus.h>
-#include <linux/sysdev.h>
-#include <asm/io.h>
-#include "sleep.h"
-
-int acpi_sleep_prepare(u32 acpi_state)
-{
-#ifdef CONFIG_ACPI_SLEEP
-	/* do we have a wakeup address for S2 and S3? */
-	if (acpi_state == ACPI_STATE_S3) {
-		if (!acpi_wakeup_address) {
-			return -EFAULT;
-		}
-		acpi_set_firmware_waking_vector((acpi_physical_address)
-						virt_to_phys((void *)
-							     acpi_wakeup_address));
-
-	}
-	ACPI_FLUSH_CPU_CACHE();
-	acpi_enable_wakeup_device_prep(acpi_state);
-#endif
-	acpi_gpe_sleep_prepare(acpi_state);
-	acpi_enter_sleep_state_prep(acpi_state);
-	return 0;
-}
-
-#ifdef CONFIG_PM
-
-void acpi_power_off(void)
-{
-	/* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
-	printk("%s called\n", __FUNCTION__);
-	local_irq_disable();
-	/* Some SMP machines only can poweroff in boot CPU */
-	acpi_enter_sleep_state(ACPI_STATE_S5);
-}
-
-static int acpi_shutdown(struct sys_device *x)
-{
-	switch (system_state) {
-	case SYSTEM_POWER_OFF:
-		/* Prepare to power off the system */
-		return acpi_sleep_prepare(ACPI_STATE_S5);
-	case SYSTEM_SUSPEND_DISK:
-		/* Prepare to suspend the system to disk */
-		return acpi_sleep_prepare(ACPI_STATE_S4);
-	default:
-		return 0;
-	}
-}
-
-static struct sysdev_class acpi_sysclass = {
-	set_kset_name("acpi"),
-	.shutdown = acpi_shutdown
-};
-
-static struct sys_device device_acpi = {
-	.id = 0,
-	.cls = &acpi_sysclass,
-};
-
-static int acpi_poweroff_init(void)
-{
-	if (!acpi_disabled) {
-		u8 type_a, type_b;
-		acpi_status status;
-
-		status =
-		    acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
-		if (ACPI_SUCCESS(status)) {
-			int error;
-			error = sysdev_class_register(&acpi_sysclass);
-			if (!error)
-				error = sysdev_register(&device_acpi);
-			if (!error)
-				pm_power_off = acpi_power_off;
-			return error;
-		}
-	}
-	return 0;
-}
-
-late_initcall(acpi_poweroff_init);
-
-#endif				/* CONFIG_PM */
diff --git a/drivers/acpi/sleep/proc.c b/drivers/acpi/sleep/proc.c
index 61f1822cc35..3839efd5eae 100644
--- a/drivers/acpi/sleep/proc.c
+++ b/drivers/acpi/sleep/proc.c
@@ -14,8 +14,16 @@
 #include "sleep.h"
 
 #define _COMPONENT		ACPI_SYSTEM_COMPONENT
+
+/*
+ * this file provides support for:
+ * /proc/acpi/sleep
+ * /proc/acpi/alarm
+ * /proc/acpi/wakeup
+ */
+
 ACPI_MODULE_NAME("sleep")
-#ifdef	CONFIG_ACPI_SLEEP_PROC_SLEEP
+#ifdef	CONFIG_ACPI_PROCFS
 static int acpi_system_sleep_seq_show(struct seq_file *seq, void *offset)
 {
 	int i;
@@ -58,7 +66,7 @@ acpi_system_write_sleep(struct file *file,
 		goto Done;
 	}
 	state = simple_strtoul(str, NULL, 0);
-#ifdef CONFIG_SOFTWARE_SUSPEND
+#ifdef CONFIG_HIBERNATION
 	if (state == 4) {
 		error = hibernate();
 		goto Done;
@@ -68,9 +76,9 @@ acpi_system_write_sleep(struct file *file,
       Done:
 	return error ? error : count;
 }
-#endif				/* CONFIG_ACPI_SLEEP_PROC_SLEEP */
+#endif				/* CONFIG_ACPI_PROCFS */
 
-#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE)
+#if defined(CONFIG_RTC_DRV_CMOS) || defined(CONFIG_RTC_DRV_CMOS_MODULE) || !defined(CONFIG_X86)
 /* use /sys/class/rtc/rtcX/wakealarm instead; it's not ACPI-specific */
 #else
 #define	HAVE_ACPI_LEGACY_ALARM
@@ -463,7 +471,7 @@ static const struct file_operations acpi_system_wakeup_device_fops = {
 	.release = single_release,
 };
 
-#ifdef	CONFIG_ACPI_SLEEP_PROC_SLEEP
+#ifdef	CONFIG_ACPI_PROCFS
 static const struct file_operations acpi_system_sleep_fops = {
 	.open = acpi_system_sleep_open_fs,
 	.read = seq_read,
@@ -471,7 +479,7 @@ static const struct file_operations acpi_system_sleep_fops = {
 	.llseek = seq_lseek,
 	.release = single_release,
 };
-#endif				/* CONFIG_ACPI_SLEEP_PROC_SLEEP */
+#endif				/* CONFIG_ACPI_PROCFS */
 
 #ifdef	HAVE_ACPI_LEGACY_ALARM
 static const struct file_operations acpi_system_alarm_fops = {
@@ -498,14 +506,14 @@ static int __init acpi_sleep_proc_init(void)
 	if (acpi_disabled)
 		return 0;
 
-#ifdef	CONFIG_ACPI_SLEEP_PROC_SLEEP
+#ifdef	CONFIG_ACPI_PROCFS
 	/* 'sleep' [R/W] */
 	entry =
 	    create_proc_entry("sleep", S_IFREG | S_IRUGO | S_IWUSR,
 			      acpi_root_dir);
 	if (entry)
 		entry->proc_fops = &acpi_system_sleep_fops;
-#endif
+#endif				/* CONFIG_ACPI_PROCFS */
 
 #ifdef	HAVE_ACPI_LEGACY_ALARM
 	/* 'alarm' [R/W] */
diff --git a/drivers/acpi/sleep/sleep.h b/drivers/acpi/sleep/sleep.h
index f3e70397a7d..ff1f8504f49 100644
--- a/drivers/acpi/sleep/sleep.h
+++ b/drivers/acpi/sleep/sleep.h
@@ -6,3 +6,5 @@ extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
 extern void acpi_enable_wakeup_device(u8 sleep_state);
 extern void acpi_disable_wakeup_device(u8 sleep_state);
 extern void acpi_gpe_sleep_prepare(u32 sleep_state);
+
+extern int acpi_sleep_prepare(u32 acpi_state);
diff --git a/drivers/acpi/sleep/wakeup.c b/drivers/acpi/sleep/wakeup.c
index fab8f2694f0..97c27ddb144 100644
--- a/drivers/acpi/sleep/wakeup.c
+++ b/drivers/acpi/sleep/wakeup.c
@@ -17,7 +17,6 @@ ACPI_MODULE_NAME("wakeup_devices")
 extern struct list_head acpi_wakeup_device_list;
 extern spinlock_t acpi_device_lock;
 
-#ifdef CONFIG_ACPI_SLEEP
 /**
  * acpi_enable_wakeup_device_prep - prepare wakeup devices
  *	@sleep_state:	ACPI state
@@ -180,7 +179,6 @@ static int __init acpi_wakeup_device_init(void)
 }
 
 late_initcall(acpi_wakeup_device_init);
-#endif
 
 /*
  * Disable all wakeup GPEs before entering requested sleep state.
diff --git a/drivers/acpi/system.c b/drivers/acpi/system.c
index 83a8d309790..edee2806e37 100644
--- a/drivers/acpi/system.c
+++ b/drivers/acpi/system.c
@@ -39,15 +39,12 @@ ACPI_MODULE_NAME("system");
 
 #define ACPI_SYSTEM_CLASS		"system"
 #define ACPI_SYSTEM_DEVICE_NAME		"System"
-#define ACPI_SYSTEM_FILE_INFO		"info"
-#define ACPI_SYSTEM_FILE_EVENT		"event"
-#define ACPI_SYSTEM_FILE_DSDT		"dsdt"
-#define ACPI_SYSTEM_FILE_FADT		"fadt"
 
 /*
  * Make ACPICA version work as module param
  */
-static int param_get_acpica_version(char *buffer, struct kernel_param *kp) {
+static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
+{
 	int result;
 
 	result = sprintf(buffer, "%x", ACPI_CA_VERSION);
@@ -58,9 +55,126 @@ static int param_get_acpica_version(char *buffer, struct kernel_param *kp) {
 module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
 
 /* --------------------------------------------------------------------------
+                              FS Interface (/sys)
+   -------------------------------------------------------------------------- */
+static LIST_HEAD(acpi_table_attr_list);
+static struct kobject tables_kobj;
+
+struct acpi_table_attr {
+	struct bin_attribute attr;
+	char name[8];
+	int instance;
+	struct list_head node;
+};
+
+static ssize_t acpi_table_show(struct kobject *kobj,
+			       struct bin_attribute *bin_attr, char *buf,
+			       loff_t offset, size_t count)
+{
+	struct acpi_table_attr *table_attr =
+	    container_of(bin_attr, struct acpi_table_attr, attr);
+	struct acpi_table_header *table_header = NULL;
+	acpi_status status;
+	ssize_t ret_count = count;
+
+	status =
+	    acpi_get_table(table_attr->name, table_attr->instance,
+			   &table_header);
+	if (ACPI_FAILURE(status))
+		return -ENODEV;
+
+	if (offset >= table_header->length) {
+		ret_count = 0;
+		goto end;
+	}
+
+	if (offset + ret_count > table_header->length)
+		ret_count = table_header->length - offset;
+
+	memcpy(buf, ((char *)table_header) + offset, ret_count);
+
+      end:
+	return ret_count;
+}
+
+static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
+				 struct acpi_table_header *table_header)
+{
+	struct acpi_table_header *header = NULL;
+	struct acpi_table_attr *attr = NULL;
+
+	memcpy(table_attr->name, table_header->signature, ACPI_NAME_SIZE);
+
+	list_for_each_entry(attr, &acpi_table_attr_list, node) {
+		if (!memcmp(table_header->signature, attr->name,
+			    ACPI_NAME_SIZE))
+			if (table_attr->instance < attr->instance)
+				table_attr->instance = attr->instance;
+	}
+	table_attr->instance++;
+
+	if (table_attr->instance > 1 || (table_attr->instance == 1 &&
+					 !acpi_get_table(table_header->
+							 signature, 2,
+							 &header)))
+		sprintf(table_attr->name + 4, "%d", table_attr->instance);
+
+	table_attr->attr.size = 0;
+	table_attr->attr.read = acpi_table_show;
+	table_attr->attr.attr.name = table_attr->name;
+	table_attr->attr.attr.mode = 0444;
+	table_attr->attr.attr.owner = THIS_MODULE;
+
+	return;
+}
+
+static int acpi_system_sysfs_init(void)
+{
+	struct acpi_table_attr *table_attr;
+	struct acpi_table_header *table_header = NULL;
+	int table_index = 0;
+	int result;
+
+	tables_kobj.parent = &acpi_subsys.kobj;
+	kobject_set_name(&tables_kobj, "tables");
+	result = kobject_register(&tables_kobj);
+	if (result)
+		return result;
+
+	do {
+		result = acpi_get_table_by_index(table_index, &table_header);
+		if (!result) {
+			table_index++;
+			table_attr = NULL;
+			table_attr =
+			    kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
+			if (!table_attr)
+				return -ENOMEM;
+
+			acpi_table_attr_init(table_attr, table_header);
+			result =
+			    sysfs_create_bin_file(&tables_kobj,
+						  &table_attr->attr);
+			if (result) {
+				kfree(table_attr);
+				return result;
+			} else
+				list_add_tail(&table_attr->node,
+					      &acpi_table_attr_list);
+		}
+	} while (!result);
+
+	return 0;
+}
+
+/* --------------------------------------------------------------------------
                               FS Interface (/proc)
    -------------------------------------------------------------------------- */
 #ifdef CONFIG_ACPI_PROCFS
+#define ACPI_SYSTEM_FILE_INFO		"info"
+#define ACPI_SYSTEM_FILE_EVENT		"event"
+#define ACPI_SYSTEM_FILE_DSDT		"dsdt"
+#define ACPI_SYSTEM_FILE_FADT		"fadt"
 
 static int acpi_system_read_info(struct seq_file *seq, void *offset)
 {
@@ -80,7 +194,6 @@ static const struct file_operations acpi_system_info_ops = {
 	.llseek = seq_lseek,
 	.release = single_release,
 };
-#endif
 
 static ssize_t acpi_system_read_dsdt(struct file *, char __user *, size_t,
 				     loff_t *);
@@ -97,13 +210,11 @@ acpi_system_read_dsdt(struct file *file,
 	struct acpi_table_header *dsdt = NULL;
 	ssize_t res;
 
-
 	status = acpi_get_table(ACPI_SIG_DSDT, 1, &dsdt);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
-	res = simple_read_from_buffer(buffer, count, ppos,
-				      dsdt, dsdt->length);
+	res = simple_read_from_buffer(buffer, count, ppos, dsdt, dsdt->length);
 
 	return res;
 }
@@ -123,28 +234,21 @@ acpi_system_read_fadt(struct file *file,
 	struct acpi_table_header *fadt = NULL;
 	ssize_t res;
 
-
 	status = acpi_get_table(ACPI_SIG_FADT, 1, &fadt);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
-	res = simple_read_from_buffer(buffer, count, ppos,
-				      fadt, fadt->length);
+	res = simple_read_from_buffer(buffer, count, ppos, fadt, fadt->length);
 
 	return res;
 }
 
-static int __init acpi_system_init(void)
+static int acpi_system_procfs_init(void)
 {
 	struct proc_dir_entry *entry;
 	int error = 0;
 	char *name;
 
-
-	if (acpi_disabled)
-		return 0;
-
-#ifdef CONFIG_ACPI_PROCFS
 	/* 'info' [R] */
 	name = ACPI_SYSTEM_FILE_INFO;
 	entry = create_proc_entry(name, S_IRUGO, acpi_root_dir);
@@ -153,7 +257,6 @@ static int __init acpi_system_init(void)
 	else {
 		entry->proc_fops = &acpi_system_info_ops;
 	}
-#endif
 
 	/* 'dsdt' [R] */
 	name = ACPI_SYSTEM_FILE_DSDT;
@@ -177,12 +280,32 @@ static int __init acpi_system_init(void)
       Error:
 	remove_proc_entry(ACPI_SYSTEM_FILE_FADT, acpi_root_dir);
 	remove_proc_entry(ACPI_SYSTEM_FILE_DSDT, acpi_root_dir);
-#ifdef CONFIG_ACPI_PROCFS
 	remove_proc_entry(ACPI_SYSTEM_FILE_INFO, acpi_root_dir);
-#endif
 
 	error = -EFAULT;
 	goto Done;
 }
+#else
+static int acpi_system_procfs_init(void)
+{
+	return 0;
+}
+#endif
+
+static int __init acpi_system_init(void)
+{
+	int result = 0;
+
+	if (acpi_disabled)
+		return 0;
+
+	result = acpi_system_procfs_init();
+	if (result)
+		return result;
+
+	result = acpi_system_sysfs_init();
+
+	return result;
+}
 
 subsys_initcall(acpi_system_init);
diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/tables/tbfadt.c
index 1285e91474f..002bb33003a 100644
--- a/drivers/acpi/tables/tbfadt.c
+++ b/drivers/acpi/tables/tbfadt.c
@@ -211,14 +211,17 @@ void acpi_tb_parse_fadt(acpi_native_uint table_index, u8 flags)
  * DESCRIPTION: Get a local copy of the FADT and convert it to a common format.
  *              Performs validation on some important FADT fields.
  *
+ * NOTE:        We create a local copy of the FADT regardless of the version.
+ *
  ******************************************************************************/
 
 void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
 {
 
 	/*
-	 * Check if the FADT is larger than what we know about (ACPI 2.0 version).
-	 * Truncate the table, but make some noise.
+	 * Check if the FADT is larger than the largest table that we expect
+	 * (the ACPI 2.0/3.0 version). If so, truncate the table, and issue
+	 * a warning.
 	 */
 	if (length > sizeof(struct acpi_table_fadt)) {
 		ACPI_WARNING((AE_INFO,
@@ -227,10 +230,12 @@ void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
 			      sizeof(struct acpi_table_fadt)));
 	}
 
-	/* Copy the entire FADT locally. Zero first for tb_convert_fadt */
+	/* Clear the entire local FADT */
 
 	ACPI_MEMSET(&acpi_gbl_FADT, 0, sizeof(struct acpi_table_fadt));
 
+	/* Copy the original FADT, up to sizeof (struct acpi_table_fadt) */
+
 	ACPI_MEMCPY(&acpi_gbl_FADT, table,
 		    ACPI_MIN(length, sizeof(struct acpi_table_fadt)));
 
@@ -251,7 +256,7 @@ void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length)
  * RETURN:      None
  *
  * DESCRIPTION: Converts all versions of the FADT to a common internal format.
- *              -> Expand all 32-bit addresses to 64-bit.
+ *              Expand all 32-bit addresses to 64-bit.
  *
  * NOTE:        acpi_gbl_FADT must be of size (struct acpi_table_fadt),
  *              and must contain a copy of the actual FADT.
@@ -292,8 +297,23 @@ static void acpi_tb_convert_fadt(void)
 	}
 
 	/*
-	 * Expand the 32-bit V1.0 addresses to the 64-bit "X" generic address
-	 * structures as necessary.
+	 * For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which
+	 * should be zero are indeed zero. This will workaround BIOSs that
+	 * inadvertently place values in these fields.
+	 *
+	 * The ACPI 1.0 reserved fields that will be zeroed are the bytes located at
+	 * offset 45, 55, 95, and the word located at offset 109, 110.
+	 */
+	if (acpi_gbl_FADT.header.revision < 3) {
+		acpi_gbl_FADT.preferred_profile = 0;
+		acpi_gbl_FADT.pstate_control = 0;
+		acpi_gbl_FADT.cst_control = 0;
+		acpi_gbl_FADT.boot_flags = 0;
+	}
+
+	/*
+	 * Expand the ACPI 1.0 32-bit V1.0 addresses to the ACPI 2.0 64-bit "X"
+	 * generic address structures as necessary.
 	 */
 	for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
 		target =
@@ -349,18 +369,6 @@ static void acpi_tb_convert_fadt(void)
 		    acpi_gbl_FADT.xpm1a_event_block.space_id;
 
 	}
-
-	/*
-	 * For ACPI 1.0 FADTs, ensure that reserved fields (which should be zero)
-	 * are indeed zero. This will workaround BIOSs that inadvertently placed
-	 * values in these fields.
-	 */
-	if (acpi_gbl_FADT.header.revision < 3) {
-		acpi_gbl_FADT.preferred_profile = 0;
-		acpi_gbl_FADT.pstate_control = 0;
-		acpi_gbl_FADT.cst_control = 0;
-		acpi_gbl_FADT.boot_flags = 0;
-	}
 }
 
 /******************************************************************************
diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/tables/tbutils.c
index 1da64b4518c..8cc9492ffbf 100644
--- a/drivers/acpi/tables/tbutils.c
+++ b/drivers/acpi/tables/tbutils.c
@@ -51,6 +51,65 @@ ACPI_MODULE_NAME("tbutils")
 static acpi_physical_address
 acpi_tb_get_root_table_entry(u8 * table_entry,
 			     acpi_native_uint table_entry_size);
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_tb_check_xsdt
+ *
+ * PARAMETERS:  address                    - Pointer to the XSDT
+ *
+ * RETURN:      status
+ *		AE_OK - XSDT is okay
+ *		AE_NO_MEMORY - can't map XSDT
+ *		AE_INVALID_TABLE_LENGTH - invalid table length
+ *		AE_NULL_ENTRY - XSDT has NULL entry
+ *
+ * DESCRIPTION: validate XSDT
+******************************************************************************/
+
+static acpi_status
+acpi_tb_check_xsdt(acpi_physical_address address)
+{
+	struct acpi_table_header *table;
+	u32 length;
+	u64 xsdt_entry_address;
+	u8 *table_entry;
+	u32 table_count;
+	int i;
+
+	table = acpi_os_map_memory(address, sizeof(struct acpi_table_header));
+	if (!table)
+		return AE_NO_MEMORY;
+
+	length = table->length;
+	acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
+	if (length < sizeof(struct acpi_table_header))
+		return AE_INVALID_TABLE_LENGTH;
+
+	table = acpi_os_map_memory(address, length);
+	if (!table)
+		return AE_NO_MEMORY;
+
+	/* Calculate the number of tables described in XSDT */
+	table_count =
+		(u32) ((table->length -
+		sizeof(struct acpi_table_header)) / sizeof(u64));
+	table_entry =
+		ACPI_CAST_PTR(u8, table) + sizeof(struct acpi_table_header);
+	for (i = 0; i < table_count; i++) {
+		ACPI_MOVE_64_TO_64(&xsdt_entry_address, table_entry);
+		if (!xsdt_entry_address) {
+			/* XSDT has NULL entry */
+			break;
+		}
+		table_entry += sizeof(u64);
+	}
+	acpi_os_unmap_memory(table, length);
+
+	if (i < table_count)
+		return AE_NULL_ENTRY;
+	else
+		return AE_OK;
+}
 
 /*******************************************************************************
  *
@@ -341,6 +400,7 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address, u8 flags)
 	u32 table_count;
 	struct acpi_table_header *table;
 	acpi_physical_address address;
+	acpi_physical_address rsdt_address;
 	u32 length;
 	u8 *table_entry;
 	acpi_status status;
@@ -369,6 +429,8 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address, u8 flags)
 		 */
 		address = (acpi_physical_address) rsdp->xsdt_physical_address;
 		table_entry_size = sizeof(u64);
+		rsdt_address = (acpi_physical_address)
+					rsdp->rsdt_physical_address;
 	} else {
 		/* Root table is an RSDT (32-bit physical addresses) */
 
@@ -382,6 +444,15 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address, u8 flags)
 	 */
 	acpi_os_unmap_memory(rsdp, sizeof(struct acpi_table_rsdp));
 
+	if (table_entry_size == sizeof(u64)) {
+		if (acpi_tb_check_xsdt(address) == AE_NULL_ENTRY) {
+			/* XSDT has NULL entry, RSDT is used */
+			address = rsdt_address;
+			table_entry_size = sizeof(u32);
+			ACPI_WARNING((AE_INFO, "BIOS XSDT has NULL entry,"
+					"using RSDT"));
+		}
+	}
 	/* Map the RSDT/XSDT table header to get the full table length */
 
 	table = acpi_os_map_memory(address, sizeof(struct acpi_table_header));
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index 5b302c4e293..a9e3331fee5 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -52,6 +52,8 @@ ACPI_MODULE_NAME("tbxface")
 /* Local prototypes */
 static acpi_status acpi_tb_load_namespace(void);
 
+static int no_auto_ssdt;
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_allocate_root_table
@@ -536,6 +538,10 @@ static acpi_status acpi_tb_load_namespace(void)
 
 		ACPI_INFO((AE_INFO, "Table DSDT replaced by host OS"));
 		acpi_tb_print_table_header(0, table);
+
+		if (no_auto_ssdt == 0) {
+			printk(KERN_WARNING "ACPI: DSDT override uses original SSDTs unless \"acpi_no_auto_ssdt\"");
+		}
 	}
 
 	status =
@@ -577,6 +583,11 @@ static acpi_status acpi_tb_load_namespace(void)
 			continue;
 		}
 
+		if (no_auto_ssdt) {
+			printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
+			continue;
+		}
+
 		/* Ignore errors while loading tables, get as many as possible */
 
 		(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
@@ -622,3 +633,15 @@ acpi_status acpi_load_tables(void)
 }
 
 ACPI_EXPORT_SYMBOL(acpi_load_tables)
+
+
+static int __init acpi_no_auto_ssdt_setup(char *s) {
+
+        printk(KERN_NOTICE "ACPI: SSDT auto-load disabled\n");
+
+        no_auto_ssdt = 1;
+
+        return 1;
+}
+
+__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 88a6fc7fd27..ad898e10c1a 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -33,6 +33,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/dmi.h>
 #include <linux/init.h>
 #include <linux/types.h>
 #include <linux/proc_fs.h>
@@ -40,6 +41,7 @@
 #include <linux/jiffies.h>
 #include <linux/kmod.h>
 #include <linux/seq_file.h>
+#include <linux/reboot.h>
 #include <asm/uaccess.h>
 
 #include <acpi/acpi_bus.h>
@@ -59,7 +61,6 @@
 #define ACPI_THERMAL_NOTIFY_CRITICAL	0xF0
 #define ACPI_THERMAL_NOTIFY_HOT		0xF1
 #define ACPI_THERMAL_MODE_ACTIVE	0x00
-#define ACPI_THERMAL_PATH_POWEROFF	"/sbin/poweroff"
 
 #define ACPI_THERMAL_MAX_ACTIVE	10
 #define ACPI_THERMAL_MAX_LIMIT_STR_LEN 65
@@ -74,9 +75,29 @@ MODULE_AUTHOR("Paul Diefenbaugh");
 MODULE_DESCRIPTION("ACPI Thermal Zone Driver");
 MODULE_LICENSE("GPL");
 
+static int act;
+module_param(act, int, 0644);
+MODULE_PARM_DESC(act, "Disable or override all lowest active trip points.");
+
+static int crt;
+module_param(crt, int, 0644);
+MODULE_PARM_DESC(crt, "Disable or lower all critical trip points.");
+
 static int tzp;
-module_param(tzp, int, 0);
-MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
+module_param(tzp, int, 0444);
+MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.");
+
+static int nocrt;
+module_param(nocrt, int, 0);
+MODULE_PARM_DESC(nocrt, "Set to take no action upon ACPI thermal zone critical trips points.");
+
+static int off;
+module_param(off, int, 0);
+MODULE_PARM_DESC(off, "Set to disable ACPI thermal support.");
+
+static int psv;
+module_param(psv, int, 0644);
+MODULE_PARM_DESC(psv, "Disable or override all passive trip points.");
 
 static int acpi_thermal_add(struct acpi_device *device);
 static int acpi_thermal_remove(struct acpi_device *device, int type);
@@ -92,10 +113,16 @@ static int acpi_thermal_polling_open_fs(struct inode *inode, struct file *file);
 static ssize_t acpi_thermal_write_polling(struct file *, const char __user *,
 					  size_t, loff_t *);
 
+static const struct acpi_device_id  thermal_device_ids[] = {
+	{ACPI_THERMAL_HID, 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, thermal_device_ids);
+
 static struct acpi_driver acpi_thermal_driver = {
 	.name = "thermal",
 	.class = ACPI_THERMAL_CLASS,
-	.ids = ACPI_THERMAL_HID,
+	.ids = thermal_device_ids,
 	.ops = {
 		.add = acpi_thermal_add,
 		.remove = acpi_thermal_remove,
@@ -317,6 +344,20 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
 				  tz->trips.critical.temperature));
 	}
 
+	if (tz->trips.critical.flags.valid == 1) {
+		if (crt == -1) {
+			tz->trips.critical.flags.valid = 0;
+		} else if (crt > 0) {
+			unsigned long crt_k = CELSIUS_TO_KELVIN(crt);
+
+			/*
+			 * Allow override to lower critical threshold
+			 */
+			if (crt_k < tz->trips.critical.temperature)
+				tz->trips.critical.temperature = crt_k;
+		}
+	}
+
 	/* Critical Sleep (optional) */
 
 	status =
@@ -333,9 +374,16 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
 
 	/* Passive: Processors (optional) */
 
-	status =
-	    acpi_evaluate_integer(tz->device->handle, "_PSV", NULL,
-				  &tz->trips.passive.temperature);
+	if (psv == -1) {
+		status = AE_SUPPORT;
+	} else if (psv > 0) {
+		tz->trips.passive.temperature = CELSIUS_TO_KELVIN(psv);
+		status = AE_OK;
+	} else {
+		status = acpi_evaluate_integer(tz->device->handle,
+			"_PSV", NULL, &tz->trips.passive.temperature);
+	}
+
 	if (ACPI_FAILURE(status)) {
 		tz->trips.passive.flags.valid = 0;
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No passive threshold\n"));
@@ -380,11 +428,33 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
 
 		char name[5] = { '_', 'A', 'C', ('0' + i), '\0' };
 
-		status =
-		    acpi_evaluate_integer(tz->device->handle, name, NULL,
-					  &tz->trips.active[i].temperature);
-		if (ACPI_FAILURE(status))
+		if (act == -1)
+			break;	/* disable all active trip points */
+
+		status = acpi_evaluate_integer(tz->device->handle,
+			name, NULL, &tz->trips.active[i].temperature);
+
+		if (ACPI_FAILURE(status)) {
+			if (i == 0)	/* no active trip points */
+				break;
+			if (act <= 0)	/* no override requested */
+				break;
+			if (i == 1) {	/* 1 trip point */
+				tz->trips.active[0].temperature =
+					CELSIUS_TO_KELVIN(act);
+			} else {	/* multiple trips */
+				/*
+				 * Don't allow override higher than
+				 * the next higher trip point
+				 */
+				tz->trips.active[i - 1].temperature =
+				    (tz->trips.active[i - 2].temperature <
+					CELSIUS_TO_KELVIN(act) ?
+					tz->trips.active[i - 2].temperature :
+					CELSIUS_TO_KELVIN(act));
+			}
 			break;
+		}
 
 		name[2] = 'L';
 		status =
@@ -419,29 +489,9 @@ static int acpi_thermal_get_devices(struct acpi_thermal *tz)
 	return 0;
 }
 
-static int acpi_thermal_call_usermode(char *path)
-{
-	char *argv[2] = { NULL, NULL };
-	char *envp[3] = { NULL, NULL, NULL };
-
-
-	if (!path)
-		return -EINVAL;
-
-	argv[0] = path;
-
-	/* minimal command environment */
-	envp[0] = "HOME=/";
-	envp[1] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
-
-	call_usermodehelper(argv[0], argv, envp, 0);
-
-	return 0;
-}
-
 static int acpi_thermal_critical(struct acpi_thermal *tz)
 {
-	if (!tz || !tz->trips.critical.flags.valid)
+	if (!tz || !tz->trips.critical.flags.valid || nocrt)
 		return -EINVAL;
 
 	if (tz->temperature >= tz->trips.critical.temperature) {
@@ -453,17 +503,21 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
 	printk(KERN_EMERG
 	       "Critical temperature reached (%ld C), shutting down.\n",
 	       KELVIN_TO_CELSIUS(tz->temperature));
-	acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
+	acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
 				tz->trips.critical.flags.enabled);
+	acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
+					  tz->device->dev.bus_id,
+					  ACPI_THERMAL_NOTIFY_CRITICAL,
+					  tz->trips.critical.flags.enabled);
 
-	acpi_thermal_call_usermode(ACPI_THERMAL_PATH_POWEROFF);
+	orderly_poweroff(true);
 
 	return 0;
 }
 
 static int acpi_thermal_hot(struct acpi_thermal *tz)
 {
-	if (!tz || !tz->trips.hot.flags.valid)
+	if (!tz || !tz->trips.hot.flags.valid || nocrt)
 		return -EINVAL;
 
 	if (tz->temperature >= tz->trips.hot.temperature) {
@@ -472,8 +526,12 @@ static int acpi_thermal_hot(struct acpi_thermal *tz)
 	} else if (tz->trips.hot.flags.enabled)
 		tz->trips.hot.flags.enabled = 0;
 
-	acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
+	acpi_bus_generate_proc_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
 				tz->trips.hot.flags.enabled);
+	acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
+					  tz->device->dev.bus_id,
+					  ACPI_THERMAL_NOTIFY_HOT,
+					  tz->trips.hot.flags.enabled);
 
 	/* TBD: Call user-mode "sleep(S4)" function */
 
@@ -838,12 +896,14 @@ static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
 		goto end;
 
 	if (tz->trips.critical.flags.valid)
-		seq_printf(seq, "critical (S5):           %ld C\n",
-			   KELVIN_TO_CELSIUS(tz->trips.critical.temperature));
+		seq_printf(seq, "critical (S5):           %ld C%s",
+			   KELVIN_TO_CELSIUS(tz->trips.critical.temperature),
+			   nocrt ? " <disabled>\n" : "\n");
 
 	if (tz->trips.hot.flags.valid)
-		seq_printf(seq, "hot (S4):                %ld C\n",
-			   KELVIN_TO_CELSIUS(tz->trips.hot.temperature));
+		seq_printf(seq, "hot (S4):                %ld C%s",
+			   KELVIN_TO_CELSIUS(tz->trips.hot.temperature),
+			   nocrt ? " <disabled>\n" : "\n");
 
 	if (tz->trips.passive.flags.valid) {
 		seq_printf(seq,
@@ -1033,9 +1093,9 @@ static int acpi_thermal_add_fs(struct acpi_device *device)
 		entry->owner = THIS_MODULE;
 	}
 
-	/* 'trip_points' [R/W] */
+	/* 'trip_points' [R] */
 	entry = create_proc_entry(ACPI_THERMAL_FILE_TRIP_POINTS,
-				  S_IFREG | S_IRUGO | S_IWUSR,
+				  S_IRUGO,
 				  acpi_device_dir(device));
 	if (!entry)
 		return -ENODEV;
@@ -1115,12 +1175,16 @@ static void acpi_thermal_notify(acpi_handle handle, u32 event, void *data)
 	case ACPI_THERMAL_NOTIFY_THRESHOLDS:
 		acpi_thermal_get_trip_points(tz);
 		acpi_thermal_check(tz);
-		acpi_bus_generate_event(device, event, 0);
+		acpi_bus_generate_proc_event(device, event, 0);
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  device->dev.bus_id, event, 0);
 		break;
 	case ACPI_THERMAL_NOTIFY_DEVICES:
 		if (tz->flags.devices)
 			acpi_thermal_get_devices(tz);
-		acpi_bus_generate_event(device, event, 0);
+		acpi_bus_generate_proc_event(device, event, 0);
+		acpi_bus_generate_netlink_event(device->pnp.device_class,
+						  device->dev.bus_id, event, 0);
 		break;
 	default:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -1295,11 +1359,93 @@ static int acpi_thermal_resume(struct acpi_device *device)
 	return AE_OK;
 }
 
+#ifdef CONFIG_DMI
+static int thermal_act(const struct dmi_system_id *d) {
+
+	if (act == 0) {
+		printk(KERN_NOTICE "ACPI: %s detected: "
+			"disabling all active thermal trip points\n", d->ident);
+		act = -1;
+	}
+	return 0;
+}
+static int thermal_nocrt(const struct dmi_system_id *d) {
+
+	printk(KERN_NOTICE "ACPI: %s detected: "
+		"disabling all critical thermal trip point actions.\n", d->ident);
+	nocrt = 1;
+	return 0;
+}
+static int thermal_tzp(const struct dmi_system_id *d) {
+
+	if (tzp == 0) {
+		printk(KERN_NOTICE "ACPI: %s detected: "
+			"enabling thermal zone polling\n", d->ident);
+		tzp = 300;	/* 300 dS = 30 Seconds */
+	}
+	return 0;
+}
+static int thermal_psv(const struct dmi_system_id *d) {
+
+	if (psv == 0) {
+		printk(KERN_NOTICE "ACPI: %s detected: "
+			"disabling all passive thermal trip points\n", d->ident);
+		psv = -1;
+	}
+	return 0;
+}
+
+static struct dmi_system_id thermal_dmi_table[] __initdata = {
+	/*
+	 * Award BIOS on this AOpen makes thermal control almost worthless.
+	 * http://bugzilla.kernel.org/show_bug.cgi?id=8842
+	 */
+	{
+	 .callback = thermal_act,
+	 .ident = "AOpen i915GMm-HFS",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
+		DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
+		},
+	},
+	{
+	 .callback = thermal_psv,
+	 .ident = "AOpen i915GMm-HFS",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
+		DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
+		},
+	},
+	{
+	 .callback = thermal_tzp,
+	 .ident = "AOpen i915GMm-HFS",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
+		DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
+		},
+	},
+	{
+	 .callback = thermal_nocrt,
+	 .ident = "Gigabyte GA-7ZX",
+	 .matches = {
+		DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."),
+		DMI_MATCH(DMI_BOARD_NAME, "7ZX"),
+		},
+	},
+	{}
+};
+#endif /* CONFIG_DMI */
+
 static int __init acpi_thermal_init(void)
 {
 	int result = 0;
 
+	dmi_check_system(thermal_dmi_table);
 
+	if (off) {
+		printk(KERN_NOTICE "ACPI: thermal control disabled\n");
+		return -ENODEV;
+	}
 	acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir);
 	if (!acpi_thermal_dir)
 		return -ENODEV;
diff --git a/drivers/acpi/utilities/uteval.c b/drivers/acpi/utilities/uteval.c
index 8ec6f8e4813..0042b7e78b2 100644
--- a/drivers/acpi/utilities/uteval.c
+++ b/drivers/acpi/utilities/uteval.c
@@ -62,16 +62,13 @@ acpi_ut_translate_one_cid(union acpi_operand_object *obj_desc,
 static char *acpi_interfaces_supported[] = {
 	/* Operating System Vendor Strings */
 
-	"Windows 2000",
-	"Windows 2001",
-	"Windows 2001 SP0",
-	"Windows 2001 SP1",
-	"Windows 2001 SP2",
-	"Windows 2001 SP3",
-	"Windows 2001 SP4",
-	"Windows 2001.1",
-	"Windows 2001.1 SP1",	/* Added 03/2006 */
-	"Windows 2006",		/* Added 03/2006 */
+	"Windows 2000",		/* Windows 2000 */
+	"Windows 2001",		/* Windows XP */
+	"Windows 2001 SP1",	/* Windows XP SP1 */
+	"Windows 2001 SP2",	/* Windows XP SP2 */
+	"Windows 2001.1",	/* Windows Server 2003 */
+	"Windows 2001.1 SP1",	/* Windows Server 2003 SP1 - Added 03/2006 */
+	"Windows 2006",		/* Windows Vista - Added 03/2006 */
 
 	/* Feature Group Strings */
 
@@ -410,7 +407,7 @@ acpi_ut_copy_id_string(char *destination, char *source, acpi_size max_length)
 
 acpi_status
 acpi_ut_execute_HID(struct acpi_namespace_node *device_node,
-		    struct acpi_device_id *hid)
+		    struct acpica_device_id *hid)
 {
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
@@ -612,7 +609,7 @@ acpi_ut_execute_CID(struct acpi_namespace_node * device_node,
 
 acpi_status
 acpi_ut_execute_UID(struct acpi_namespace_node *device_node,
-		    struct acpi_device_id *uid)
+		    struct acpica_device_id *uid)
 {
 	union acpi_operand_object *obj_desc;
 	acpi_status status;
diff --git a/drivers/acpi/utilities/utglobal.c b/drivers/acpi/utilities/utglobal.c
index 1621655d6e2..93ea8290b4f 100644
--- a/drivers/acpi/utilities/utglobal.c
+++ b/drivers/acpi/utilities/utglobal.c
@@ -126,6 +126,7 @@ const char *acpi_format_exception(acpi_status status)
 			    "Unknown exception code: 0x%8.8X", status));
 
 		exception = "UNKNOWN_STATUS_CODE";
+		dump_stack();
 	}
 
 	return (ACPI_CAST_PTR(const char, exception));
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 00d25b34725..b8a2095cb5e 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -31,8 +31,9 @@
 #include <linux/list.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
-
+#include <linux/input.h>
 #include <linux/backlight.h>
+#include <linux/video_output.h>
 #include <asm/uaccess.h>
 
 #include <acpi/acpi_bus.h>
@@ -73,10 +74,16 @@ MODULE_LICENSE("GPL");
 static int acpi_video_bus_add(struct acpi_device *device);
 static int acpi_video_bus_remove(struct acpi_device *device, int type);
 
+static const struct acpi_device_id video_device_ids[] = {
+	{ACPI_VIDEO_HID, 0},
+	{"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, video_device_ids);
+
 static struct acpi_driver acpi_video_bus = {
 	.name = "video",
 	.class = ACPI_VIDEO_CLASS,
-	.ids = ACPI_VIDEO_HID,
+	.ids = video_device_ids,
 	.ops = {
 		.add = acpi_video_bus_add,
 		.remove = acpi_video_bus_remove,
@@ -131,6 +138,8 @@ struct acpi_video_bus {
 	struct semaphore sem;
 	struct list_head video_device_list;
 	struct proc_dir_entry *dir;
+	struct input_dev *input;
+	char phys[32];	/* for input device */
 };
 
 struct acpi_video_device_flags {
@@ -169,6 +178,7 @@ struct acpi_video_device {
 	struct acpi_device *dev;
 	struct acpi_video_device_brightness *brightness;
 	struct backlight_device *backlight;
+	struct output_device *output_dev;
 };
 
 /* bus */
@@ -272,13 +282,17 @@ static int acpi_video_get_next_level(struct acpi_video_device *device,
 				     u32 level_current, u32 event);
 static void acpi_video_switch_brightness(struct acpi_video_device *device,
 					 int event);
+static int acpi_video_device_get_state(struct acpi_video_device *device,
+			    unsigned long *state);
+static int acpi_video_output_get(struct output_device *od);
+static int acpi_video_device_set_state(struct acpi_video_device *device, int state);
 
 /*backlight device sysfs support*/
 static int acpi_video_get_brightness(struct backlight_device *bd)
 {
 	unsigned long cur_level;
 	struct acpi_video_device *vd =
-		(struct acpi_video_device *)class_get_devdata(&bd->class_dev);
+		(struct acpi_video_device *)bl_get_data(bd);
 	acpi_video_device_lcd_get_level_current(vd, &cur_level);
 	return (int) cur_level;
 }
@@ -287,7 +301,7 @@ static int acpi_video_set_brightness(struct backlight_device *bd)
 {
 	int request_level = bd->props.brightness;
 	struct acpi_video_device *vd =
-		(struct acpi_video_device *)class_get_devdata(&bd->class_dev);
+		(struct acpi_video_device *)bl_get_data(bd);
 	acpi_video_device_lcd_set_level(vd, request_level);
 	return 0;
 }
@@ -297,6 +311,28 @@ static struct backlight_ops acpi_backlight_ops = {
 	.update_status  = acpi_video_set_brightness,
 };
 
+/*video output device sysfs support*/
+static int acpi_video_output_get(struct output_device *od)
+{
+	unsigned long state;
+	struct acpi_video_device *vd =
+		(struct acpi_video_device *)dev_get_drvdata(&od->dev);
+	acpi_video_device_get_state(vd, &state);
+	return (int)state;
+}
+
+static int acpi_video_output_set(struct output_device *od)
+{
+	unsigned long state = od->request_state;
+	struct acpi_video_device *vd=
+		(struct acpi_video_device *)dev_get_drvdata(&od->dev);
+	return acpi_video_device_set_state(vd, state);
+}
+
+static struct output_properties acpi_output_properties = {
+	.set_state = acpi_video_output_set,
+	.get_status = acpi_video_output_get,
+};
 /* --------------------------------------------------------------------------
                                Video Management
    -------------------------------------------------------------------------- */
@@ -381,7 +417,6 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level)
 	arg0.integer.value = level;
 	status = acpi_evaluate_object(device->dev->handle, "_BCM", &args, NULL);
 
-	printk(KERN_DEBUG "set_level status: %x\n", status);
 	return status;
 }
 
@@ -531,7 +566,6 @@ acpi_video_bus_DOS(struct acpi_video_bus *video, int bios_flag, int lcd_flag)
 
 static void acpi_video_device_find_cap(struct acpi_video_device *device)
 {
-	acpi_integer status;
 	acpi_handle h_dummy1;
 	int i;
 	u32 max_level = 0;
@@ -565,50 +599,55 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 		device->cap._DSS = 1;
 	}
 
-	status = acpi_video_device_lcd_query_levels(device, &obj);
-
-	if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) {
-		int count = 0;
-		union acpi_object *o;
-
-		br = kzalloc(sizeof(*br), GFP_KERNEL);
-		if (!br) {
-			printk(KERN_ERR "can't allocate memory\n");
-		} else {
-			br->levels = kmalloc(obj->package.count *
-					     sizeof *(br->levels), GFP_KERNEL);
-			if (!br->levels)
-				goto out;
-
-			for (i = 0; i < obj->package.count; i++) {
-				o = (union acpi_object *)&obj->package.
-				    elements[i];
-				if (o->type != ACPI_TYPE_INTEGER) {
-					printk(KERN_ERR PREFIX "Invalid data\n");
-					continue;
-				}
-				br->levels[count] = (u32) o->integer.value;
-				if (br->levels[count] > max_level)
-					max_level = br->levels[count];
-				count++;
-			}
-		      out:
-			if (count < 2) {
-				kfree(br->levels);
-				kfree(br);
+	if (ACPI_SUCCESS(acpi_video_device_lcd_query_levels(device, &obj))) {
+
+		if (obj->package.count >= 2) {
+			int count = 0;
+			union acpi_object *o;
+
+			br = kzalloc(sizeof(*br), GFP_KERNEL);
+			if (!br) {
+				printk(KERN_ERR "can't allocate memory\n");
 			} else {
-				br->count = count;
-				device->brightness = br;
-				ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-						  "found %d brightness levels\n",
-						  count));
+				br->levels = kmalloc(obj->package.count *
+						     sizeof *(br->levels), GFP_KERNEL);
+				if (!br->levels)
+					goto out;
+
+				for (i = 0; i < obj->package.count; i++) {
+					o = (union acpi_object *)&obj->package.
+					    elements[i];
+					if (o->type != ACPI_TYPE_INTEGER) {
+						printk(KERN_ERR PREFIX "Invalid data\n");
+						continue;
+					}
+					br->levels[count] = (u32) o->integer.value;
+
+					if (br->levels[count] > max_level)
+						max_level = br->levels[count];
+					count++;
+				}
+			      out:
+				if (count < 2) {
+					kfree(br->levels);
+					kfree(br);
+				} else {
+					br->count = count;
+					device->brightness = br;
+					ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+							  "found %d brightness levels\n",
+							  count));
+				}
 			}
 		}
+
+	} else {
+		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not query available LCD brightness level\n"));
 	}
 
 	kfree(obj);
 
-	if (device->cap._BCL && device->cap._BCM && device->cap._BQC){
+	if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){
 		unsigned long tmp;
 		static int count = 0;
 		char *name;
@@ -626,6 +665,17 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 
 		kfree(name);
 	}
+	if (device->cap._DCS && device->cap._DSS){
+		static int count = 0;
+		char *name;
+		name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
+		if (!name)
+			return;
+		sprintf(name, "acpi_video%d", count++);
+		device->output_dev = video_output_register(name,
+				NULL, device, &acpi_output_properties);
+		kfree(name);
+	}
 	return;
 }
 
@@ -1669,6 +1719,7 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
 					    ACPI_DEVICE_NOTIFY,
 					    acpi_video_device_notify);
 	backlight_device_unregister(device->backlight);
+	video_output_unregister(device->output_dev);
 	return 0;
 }
 
@@ -1702,7 +1753,7 @@ static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
 
 static int acpi_video_bus_start_devices(struct acpi_video_bus *video)
 {
-	return acpi_video_bus_DOS(video, 1, 0);
+	return acpi_video_bus_DOS(video, 0, 0);
 }
 
 static int acpi_video_bus_stop_devices(struct acpi_video_bus *video)
@@ -1714,6 +1765,9 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
 {
 	struct acpi_video_bus *video = data;
 	struct acpi_device *device = NULL;
+	struct input_dev *input;
+	int keycode;
+
 
 	printk("video bus notify\n");
 
@@ -1721,11 +1775,13 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
 		return;
 
 	device = video->device;
+	input = video->input;
 
 	switch (event) {
 	case ACPI_VIDEO_NOTIFY_SWITCH:	/* User requested a switch,
 					 * most likely via hotkey. */
-		acpi_bus_generate_event(device, event, 0);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_SWITCHVIDEOMODE;
 		break;
 
 	case ACPI_VIDEO_NOTIFY_PROBE:	/* User plugged in or removed a video
@@ -1733,22 +1789,38 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
 		acpi_video_device_enumerate(video);
 		acpi_video_device_rebind(video);
 		acpi_video_switch_output(video, event);
-		acpi_bus_generate_event(device, event, 0);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_SWITCHVIDEOMODE;
 		break;
 
 	case ACPI_VIDEO_NOTIFY_CYCLE:	/* Cycle Display output hotkey pressed. */
+		acpi_video_switch_output(video, event);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_SWITCHVIDEOMODE;
+		break;
 	case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT:	/* Next Display output hotkey pressed. */
+		acpi_video_switch_output(video, event);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_VIDEO_NEXT;
+		break;
 	case ACPI_VIDEO_NOTIFY_PREV_OUTPUT:	/* previous Display output hotkey pressed. */
 		acpi_video_switch_output(video, event);
-		acpi_bus_generate_event(device, event, 0);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_VIDEO_PREV;
 		break;
 
 	default:
+		keycode = KEY_UNKNOWN;
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "Unsupported event [0x%x]\n", event));
 		break;
 	}
 
+	input_report_key(input, keycode, 1);
+	input_sync(input);
+	input_report_key(input, keycode, 0);
+	input_sync(input);
+
 	return;
 }
 
@@ -1756,38 +1828,65 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
 {
 	struct acpi_video_device *video_device = data;
 	struct acpi_device *device = NULL;
+	struct acpi_video_bus *bus;
+	struct input_dev *input;
+	int keycode;
 
 	if (!video_device)
 		return;
 
 	device = video_device->dev;
+	bus = video_device->video;
+	input = bus->input;
 
 	switch (event) {
-	case ACPI_VIDEO_NOTIFY_SWITCH:	/* change in status (cycle output device) */
-	case ACPI_VIDEO_NOTIFY_PROBE:	/* change in status (output device status) */
-		acpi_bus_generate_event(device, event, 0);
-		break;
 	case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS:	/* Cycle brightness */
+		acpi_video_switch_brightness(video_device, event);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_BRIGHTNESS_CYCLE;
+		break;
 	case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS:	/* Increase brightness */
+		acpi_video_switch_brightness(video_device, event);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_BRIGHTNESSUP;
+		break;
 	case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS:	/* Decrease brightness */
+		acpi_video_switch_brightness(video_device, event);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_BRIGHTNESSDOWN;
+		break;
 	case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS:	/* zero brightnesss */
+		acpi_video_switch_brightness(video_device, event);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_BRIGHTNESS_ZERO;
+		break;
 	case ACPI_VIDEO_NOTIFY_DISPLAY_OFF:	/* display device off */
 		acpi_video_switch_brightness(video_device, event);
-		acpi_bus_generate_event(device, event, 0);
+		acpi_bus_generate_proc_event(device, event, 0);
+		keycode = KEY_DISPLAY_OFF;
 		break;
 	default:
+		keycode = KEY_UNKNOWN;
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
 				  "Unsupported event [0x%x]\n", event));
 		break;
 	}
+
+	input_report_key(input, keycode, 1);
+	input_sync(input);
+	input_report_key(input, keycode, 0);
+	input_sync(input);
+
 	return;
 }
 
+static int instance;
 static int acpi_video_bus_add(struct acpi_device *device)
 {
 	int result = 0;
 	acpi_status status = 0;
 	struct acpi_video_bus *video = NULL;
+	struct input_dev *input;
 
 
 	if (!device)
@@ -1797,6 +1896,13 @@ static int acpi_video_bus_add(struct acpi_device *device)
 	if (!video)
 		return -ENOMEM;
 
+	/* a hack to fix the duplicate name "VID" problem on T61 */
+	if (!strcmp(device->pnp.bus_id, "VID")) {
+		if (instance)
+			device->pnp.bus_id[3] = '0' + instance;
+		instance ++;
+	}
+
 	video->device = device;
 	strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);
 	strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
@@ -1831,6 +1937,39 @@ static int acpi_video_bus_add(struct acpi_device *device)
 		goto end;
 	}
 
+
+	video->input = input = input_allocate_device();
+
+	snprintf(video->phys, sizeof(video->phys),
+		"%s/video/input0", acpi_device_hid(video->device));
+
+	input->name = acpi_device_name(video->device);
+	input->phys = video->phys;
+	input->id.bustype = BUS_HOST;
+	input->id.product = 0x06;
+	input->evbit[0] = BIT(EV_KEY);
+	set_bit(KEY_SWITCHVIDEOMODE, input->keybit);
+	set_bit(KEY_VIDEO_NEXT, input->keybit);
+	set_bit(KEY_VIDEO_PREV, input->keybit);
+	set_bit(KEY_BRIGHTNESS_CYCLE, input->keybit);
+	set_bit(KEY_BRIGHTNESSUP, input->keybit);
+	set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
+	set_bit(KEY_BRIGHTNESS_ZERO, input->keybit);
+	set_bit(KEY_DISPLAY_OFF, input->keybit);
+	set_bit(KEY_UNKNOWN, input->keybit);
+	result = input_register_device(input);
+	if (result) {
+		acpi_remove_notify_handler(video->device->handle,
+						ACPI_DEVICE_NOTIFY,
+						acpi_video_bus_notify);
+		acpi_video_bus_stop_devices(video);
+		acpi_video_bus_put_devices(video);
+		kfree(video->attached_array);
+		acpi_video_bus_remove_fs(device);
+		goto end;
+        }
+
+
 	printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s  rom: %s  post: %s)\n",
 	       ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),
 	       video->flags.multihead ? "yes" : "no",
@@ -1864,6 +2003,7 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
 	acpi_video_bus_put_devices(video);
 	acpi_video_bus_remove_fs(device);
 
+	input_unregister_device(video->input);
 	kfree(video->attached_array);
 	kfree(video);