Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel

Conflicts:

	arch/arm/mach-at91/gpio.c

16 files changed, 172 insertions, 835 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index d7f9839ba26..8a851d0f438 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -9,6 +9,7 @@ menuconfig ACPI
 	depends on PCI
 	depends on PM
 	select PNP
+	select CPU_IDLE
 	default y
 	---help---
 	  Advanced Configuration and Power Interface (ACPI) support for 
@@ -253,13 +254,6 @@ config ACPI_PCI_SLOT
 	  help you correlate PCI bus addresses with the physical geography
 	  of your slots. If you are unsure, say N.
 
-config ACPI_SYSTEM
-	bool
-	default y
-	help
-	  This driver will enable your system to shut down using ACPI, and
-	  dump your ACPI DSDT table using /proc/acpi/dsdt.
-
 config X86_PM_TIMER
 	bool "Power Management Timer Support" if EMBEDDED
 	depends on X86
@@ -287,7 +281,7 @@ config ACPI_CONTAINER
 	  support physical cpu/memory hot-plug.
 
 	  If one selects "m", this driver can be loaded with
-	  "modprobe acpi_container".
+	  "modprobe container".
 
 config ACPI_HOTPLUG_MEMORY
 	tristate "Memory Hotplug"
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 65d90c720b5..b130ea0d075 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -52,7 +52,7 @@ obj-$(CONFIG_ACPI_PROCESSOR)	+= processor.o
 obj-$(CONFIG_ACPI_CONTAINER)	+= container.o
 obj-$(CONFIG_ACPI_THERMAL)	+= thermal.o
 obj-y				+= power.o
-obj-$(CONFIG_ACPI_SYSTEM)	+= system.o event.o
+obj-y				+= system.o event.o
 obj-$(CONFIG_ACPI_DEBUG)	+= debug.o
 obj-$(CONFIG_ACPI_NUMA)		+= numa.o
 obj-$(CONFIG_ACPI_HOTPLUG_MEMORY)	+= acpi_memhotplug.o
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 9684cc82793..22ce4898572 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -538,10 +538,9 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address, u8 flags)
 			if (ACPI_FAILURE(status)) {
 				ACPI_WARNING((AE_INFO,
 					      "Truncating %u table entries!",
-					      (unsigned)
-					      (acpi_gbl_root_table_list.size -
-					       acpi_gbl_root_table_list.
-					       count)));
+					      (unsigned) (table_count -
+					       (acpi_gbl_root_table_list.
+					       count - 2))));
 				break;
 			}
 		}
diff --git a/drivers/acpi/acpica/uteval.c b/drivers/acpi/acpica/uteval.c
index da9450bc60f..9c9897dbe90 100644
--- a/drivers/acpi/acpica/uteval.c
+++ b/drivers/acpi/acpica/uteval.c
@@ -116,9 +116,9 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
 		return_ACPI_STATUS(AE_NO_MEMORY);
 	}
 
-	/* Default return value is SUPPORTED */
+	/* Default return value is 0, NOT-SUPPORTED */
 
-	return_desc->integer.value = ACPI_UINT32_MAX;
+	return_desc->integer.value = 0;
 	walk_state->return_desc = return_desc;
 
 	/* Compare input string to static table of supported interfaces */
@@ -127,10 +127,8 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
 		if (!ACPI_STRCMP
 		    (string_desc->string.pointer,
 		     acpi_interfaces_supported[i])) {
-
-			/* The interface is supported */
-
-			return_ACPI_STATUS(AE_OK);
+			return_desc->integer.value = ACPI_UINT32_MAX;
+			goto done;
 		}
 	}
 
@@ -141,15 +139,14 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state)
 	 */
 	status = acpi_os_validate_interface(string_desc->string.pointer);
 	if (ACPI_SUCCESS(status)) {
-
-		/* The interface is supported */
-
-		return_ACPI_STATUS(AE_OK);
+		return_desc->integer.value = ACPI_UINT32_MAX;
 	}
 
-	/* The interface is not supported */
+done:
+	ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO, "ACPI: BIOS _OSI(%s) %ssupported\n",
+		string_desc->string.pointer,
+		return_desc->integer.value == 0 ? "not-" : ""));
 
-	return_desc->integer.value = 0;
 	return_ACPI_STATUS(AE_OK);
 }
 
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 65132f92045..69cbc57c2d1 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -138,6 +138,29 @@ static int acpi_battery_technology(struct acpi_battery *battery)
 
 static int acpi_battery_get_state(struct acpi_battery *battery);
 
+static int acpi_battery_is_charged(struct acpi_battery *battery)
+{
+	/* either charging or discharging */
+	if (battery->state != 0)
+		return 0;
+
+	/* battery not reporting charge */
+	if (battery->capacity_now == ACPI_BATTERY_VALUE_UNKNOWN ||
+	    battery->capacity_now == 0)
+		return 0;
+
+	/* good batteries update full_charge as the batteries degrade */
+	if (battery->full_charge_capacity == battery->capacity_now)
+		return 1;
+
+	/* fallback to using design values for broken batteries */
+	if (battery->design_capacity == battery->capacity_now)
+		return 1;
+
+	/* we don't do any sort of metric based on percentages */
+	return 0;
+}
+
 static int acpi_battery_get_property(struct power_supply *psy,
 				     enum power_supply_property psp,
 				     union power_supply_propval *val)
@@ -155,7 +178,7 @@ static int acpi_battery_get_property(struct power_supply *psy,
 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
 		else if (battery->state & 0x02)
 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
-		else if (battery->state == 0)
+		else if (acpi_battery_is_charged(battery))
 			val->intval = POWER_SUPPLY_STATUS_FULL;
 		else
 			val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 17020c12623..fe0cdf83641 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -163,7 +163,7 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
 	case ACPI_NOTIFY_BUS_CHECK:
 		/* Fall through */
 	case ACPI_NOTIFY_DEVICE_CHECK:
-		printk("Container driver received %s event\n",
+		printk(KERN_WARNING "Container driver received %s event\n",
 		       (type == ACPI_NOTIFY_BUS_CHECK) ?
 		       "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK");
 		status = acpi_bus_get_device(handle, &device);
@@ -174,7 +174,8 @@ static void container_notify_cb(acpi_handle handle, u32 type, void *context)
 					kobject_uevent(&device->dev.kobj,
 						       KOBJ_ONLINE);
 				else
-					printk("Failed to add container\n");
+					printk(KERN_WARNING
+					       "Failed to add container\n");
 			}
 		} else {
 			if (ACPI_SUCCESS(status)) {
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 5b30b8d91d7..35094f230b1 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -855,10 +855,14 @@ fdd_out:
 static ssize_t show_docked(struct device *dev,
 			   struct device_attribute *attr, char *buf)
 {
+	struct acpi_device *tmp;
+
 	struct dock_station *dock_station = *((struct dock_station **)
 		dev->platform_data);
-	return snprintf(buf, PAGE_SIZE, "%d\n", dock_present(dock_station));
 
+	if (ACPI_SUCCESS(acpi_bus_get_device(dock_station->handle, &tmp)))
+		return snprintf(buf, PAGE_SIZE, "1\n");
+	return snprintf(buf, PAGE_SIZE, "0\n");
 }
 static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
 
@@ -984,7 +988,7 @@ static int dock_add(acpi_handle handle)
 
 	ret = device_create_file(&dock_device->dev, &dev_attr_docked);
 	if (ret) {
-		printk("Error %d adding sysfs file\n", ret);
+		printk(KERN_ERR "Error %d adding sysfs file\n", ret);
 		platform_device_unregister(dock_device);
 		kfree(dock_station);
 		dock_station = NULL;
@@ -992,7 +996,7 @@ static int dock_add(acpi_handle handle)
 	}
 	ret = device_create_file(&dock_device->dev, &dev_attr_undock);
 	if (ret) {
-		printk("Error %d adding sysfs file\n", ret);
+		printk(KERN_ERR "Error %d adding sysfs file\n", ret);
 		device_remove_file(&dock_device->dev, &dev_attr_docked);
 		platform_device_unregister(dock_device);
 		kfree(dock_station);
@@ -1001,7 +1005,7 @@ static int dock_add(acpi_handle handle)
 	}
 	ret = device_create_file(&dock_device->dev, &dev_attr_uid);
 	if (ret) {
-		printk("Error %d adding sysfs file\n", ret);
+		printk(KERN_ERR "Error %d adding sysfs file\n", ret);
 		device_remove_file(&dock_device->dev, &dev_attr_docked);
 		device_remove_file(&dock_device->dev, &dev_attr_undock);
 		platform_device_unregister(dock_device);
@@ -1011,7 +1015,7 @@ static int dock_add(acpi_handle handle)
 	}
 	ret = device_create_file(&dock_device->dev, &dev_attr_flags);
 	if (ret) {
-		printk("Error %d adding sysfs file\n", ret);
+		printk(KERN_ERR "Error %d adding sysfs file\n", ret);
 		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);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index a2b82c90a68..2fe15060dcd 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -120,6 +120,8 @@ static struct acpi_ec {
 	spinlock_t curr_lock;
 } *boot_ec, *first_ec;
 
+static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */
+
 /* --------------------------------------------------------------------------
                              Transaction Management
    -------------------------------------------------------------------------- */
@@ -259,6 +261,8 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,
 		clear_bit(EC_FLAGS_GPE_MODE, &ec->flags);
 		acpi_disable_gpe(NULL, ec->gpe);
 	}
+	if (EC_FLAGS_MSI)
+		udelay(ACPI_EC_DELAY);
 	/* start transaction */
 	spin_lock_irqsave(&ec->curr_lock, tmp);
 	/* following two actions should be kept atomic */
@@ -967,6 +971,11 @@ int __init acpi_ec_ecdt_probe(void)
 	/*
 	 * Generate a boot ec context
 	 */
+	if (dmi_name_in_vendors("Micro-Star") ||
+	    dmi_name_in_vendors("Notebook")) {
+		pr_info(PREFIX "Enabling special treatment for EC from MSI.\n");
+		EC_FLAGS_MSI = 1;
+	}
 	status = acpi_get_table(ACPI_SIG_ECDT, 1,
 				(struct acpi_table_header **)&ecdt_ptr);
 	if (ACPI_SUCCESS(status)) {
@@ -982,7 +991,7 @@ int __init acpi_ec_ecdt_probe(void)
 		saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL);
 		if (!saved_ec)
 			return -ENOMEM;
-		memcpy(&saved_ec, boot_ec, sizeof(saved_ec));
+		memcpy(saved_ec, boot_ec, sizeof(*saved_ec));
 	/* fall through */
 	}
 	/* This workaround is needed only on some broken machines,
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index adec3d15810..5479b9f4251 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -255,12 +255,12 @@ static int acpi_platform_notify(struct device *dev)
 	}
 	type = acpi_get_bus_type(dev->bus);
 	if (!type) {
-		DBG("No ACPI bus support for %s\n", dev->bus_id);
+		DBG("No ACPI bus support for %s\n", dev_name(dev));
 		ret = -EINVAL;
 		goto end;
 	}
 	if ((ret = type->find_device(dev, &handle)) != 0)
-		DBG("Can't get handler for %s\n", dev->bus_id);
+		DBG("Can't get handler for %s\n", dev_name(dev));
       end:
 	if (!ret)
 		acpi_bind_one(dev, handle);
@@ -271,10 +271,10 @@ static int acpi_platform_notify(struct device *dev)
 
 		acpi_get_name(dev->archdata.acpi_handle,
 			      ACPI_FULL_PATHNAME, &buffer);
-		DBG("Device %s -> %s\n", dev->bus_id, (char *)buffer.pointer);
+		DBG("Device %s -> %s\n", dev_name(dev), (char *)buffer.pointer);
 		kfree(buffer.pointer);
 	} else
-		DBG("Device %s -> No ACPI support\n", dev->bus_id);
+		DBG("Device %s -> No ACPI support\n", dev_name(dev));
 #endif
 
 	return ret;
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 6729a4992f2..b3193ec0a2e 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -228,10 +228,10 @@ void acpi_os_vprintf(const char *fmt, va_list args)
 	if (acpi_in_debugger) {
 		kdb_printf("%s", buffer);
 	} else {
-		printk("%s", buffer);
+		printk(KERN_CONT "%s", buffer);
 	}
 #else
-	printk("%s", buffer);
+	printk(KERN_CONT "%s", buffer);
 #endif
 }
 
@@ -1317,6 +1317,54 @@ acpi_os_validate_interface (char *interface)
 	return AE_SUPPORT;
 }
 
+#ifdef	CONFIG_X86
+
+struct aml_port_desc {
+	uint	start;
+	uint	end;
+	char*   name;
+	char	warned;
+};
+
+static struct aml_port_desc aml_invalid_port_list[] = {
+	{0x20, 0x21, "PIC0", 0},
+	{0xA0, 0xA1, "PIC1", 0},
+	{0x4D0, 0x4D1, "ELCR", 0}
+};
+
+/*
+ * valid_aml_io_address()
+ *
+ * if valid, return true
+ * else invalid, warn once, return false
+ */
+static bool valid_aml_io_address(uint address, uint length)
+{
+	int i;
+	int entries = sizeof(aml_invalid_port_list) / sizeof(struct aml_port_desc);
+
+	for (i = 0; i < entries; ++i) {
+		if ((address >= aml_invalid_port_list[i].start &&
+			address <= aml_invalid_port_list[i].end) ||
+			(address + length >= aml_invalid_port_list[i].start &&
+			address  + length <= aml_invalid_port_list[i].end))
+		{
+			if (!aml_invalid_port_list[i].warned)
+			{
+				printk(KERN_ERR "ACPI: Denied BIOS AML access"
+					" to invalid port 0x%x+0x%x (%s)\n",
+					address, length,
+					aml_invalid_port_list[i].name);
+				aml_invalid_port_list[i].warned = 1;
+			}
+			return false;	/* invalid */
+		}
+	}
+	return true;	/* valid */
+}
+#else
+static inline bool valid_aml_io_address(uint address, uint length) { return true; }
+#endif
 /******************************************************************************
  *
  * FUNCTION:    acpi_os_validate_address
@@ -1346,6 +1394,8 @@ acpi_os_validate_address (
 
 	switch (space_id) {
 	case ACPI_ADR_SPACE_SYSTEM_IO:
+		if (!valid_aml_io_address(address, length))
+			return AE_AML_ILLEGAL_ADDRESS;
 	case ACPI_ADR_SPACE_SYSTEM_MEMORY:
 		/* Only interference checks against SystemIO and SytemMemory
 		   are needed */
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 1c6e73c7865..6c772ca76bd 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -593,7 +593,7 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
 		return -ENODEV;
 	} else {
 		acpi_irq_penalty[link->irq.active] += PIRQ_PENALTY_PCI_USING;
-		printk(PREFIX "%s [%s] enabled at IRQ %d\n",
+		printk(KERN_WARNING PREFIX "%s [%s] enabled at IRQ %d\n",
 		       acpi_device_name(link->device),
 		       acpi_device_bid(link->device), link->irq.active);
 	}
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 66a9d814556..7bc22a471fe 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -66,43 +66,17 @@ 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)
-#ifndef CONFIG_CPU_IDLE
-#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;
-#else
 #define C2_OVERHEAD			1	/* 1us */
 #define C3_OVERHEAD			1	/* 1us */
-#endif
 #define PM_TIMER_TICKS_TO_US(p)		(((p) * 1000)/(PM_TIMER_FREQUENCY/1000))
 
 static unsigned int max_cstate __read_mostly = ACPI_PROCESSOR_MAX_POWER;
-#ifdef CONFIG_CPU_IDLE
 module_param(max_cstate, uint, 0000);
-#else
-module_param(max_cstate, uint, 0644);
-#endif
 static unsigned int nocst __read_mostly;
 module_param(nocst, uint, 0000);
 
-#ifndef CONFIG_CPU_IDLE
-/*
- * bm_history -- bit-mask with a bit per jiffy of bus-master activity
- * 1000 HZ: 0xFFFFFFFF: 32 jiffies = 32ms
- * 800 HZ: 0xFFFFFFFF: 32 jiffies = 40ms
- * 100 HZ: 0x0000000F: 4 jiffies = 40ms
- * reduce history for more aggressive entry into C3
- */
-static unsigned int bm_history __read_mostly =
-    (HZ >= 800 ? 0xFFFFFFFF : ((1U << (HZ / 25)) - 1));
-module_param(bm_history, uint, 0644);
-
-static int acpi_processor_set_power_policy(struct acpi_processor *pr);
-
-#else	/* CONFIG_CPU_IDLE */
 static unsigned int latency_factor __read_mostly = 2;
 module_param(latency_factor, uint, 0644);
-#endif
 
 /*
  * IBM ThinkPad R40e crashes mysteriously when going into C2 or C3.
@@ -224,71 +198,6 @@ static void acpi_safe_halt(void)
 	current_thread_info()->status |= TS_POLLING;
 }
 
-#ifndef CONFIG_CPU_IDLE
-
-static void
-acpi_processor_power_activate(struct acpi_processor *pr,
-			      struct acpi_processor_cx *new)
-{
-	struct acpi_processor_cx *old;
-
-	if (!pr || !new)
-		return;
-
-	old = pr->power.state;
-
-	if (old)
-		old->promotion.count = 0;
-	new->demotion.count = 0;
-
-	/* Cleanup from old state. */
-	if (old) {
-		switch (old->type) {
-		case ACPI_STATE_C3:
-			/* Disable bus master reload */
-			if (new->type != ACPI_STATE_C3 && pr->flags.bm_check)
-				acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0);
-			break;
-		}
-	}
-
-	/* Prepare to use new state. */
-	switch (new->type) {
-	case ACPI_STATE_C3:
-		/* Enable bus master reload */
-		if (old->type != ACPI_STATE_C3 && pr->flags.bm_check)
-			acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1);
-		break;
-	}
-
-	pr->power.state = new;
-
-	return;
-}
-
-static atomic_t c3_cpu_count;
-
-/* Common C-state entry for C2, C3, .. */
-static void acpi_cstate_enter(struct acpi_processor_cx *cstate)
-{
-	/* Don't trace irqs off for idle */
-	stop_critical_timings();
-	if (cstate->entry_method == ACPI_CSTATE_FFH) {
-		/* Call into architectural FFH based C-state */
-		acpi_processor_ffh_cstate_enter(cstate);
-	} else {
-		int unused;
-		/* IO port based C-state */
-		inb(cstate->address);
-		/* Dummy wait op - must do something useless after P_LVL2 read
-		   because chipsets cannot guarantee that STPCLK# signal
-		   gets asserted in time to freeze execution properly. */
-		unused = inl(acpi_gbl_FADT.xpm_timer_block.address);
-	}
-	start_critical_timings();
-}
-#endif /* !CONFIG_CPU_IDLE */
-
 #ifdef ARCH_APICTIMER_STOPS_ON_C3
 
 /*
@@ -390,421 +299,6 @@ static int tsc_halts_in_c(int state)
 }
 #endif
 
-#ifndef CONFIG_CPU_IDLE
-static void acpi_processor_idle(void)
-{
-	struct acpi_processor *pr = NULL;
-	struct acpi_processor_cx *cx = NULL;
-	struct acpi_processor_cx *next_state = NULL;
-	int sleep_ticks = 0;
-	u32 t1, t2 = 0;
-
-	/*
-	 * Interrupts must be disabled during bus mastering calculations and
-	 * for C2/C3 transitions.
-	 */
-	local_irq_disable();
-
-	pr = __get_cpu_var(processors);
-	if (!pr) {
-		local_irq_enable();
-		return;
-	}
-
-	/*
-	 * Check whether we truly need to go idle, or should
-	 * reschedule:
-	 */
-	if (unlikely(need_resched())) {
-		local_irq_enable();
-		return;
-	}
-
-	cx = pr->power.state;
-	if (!cx || acpi_idle_suspend) {
-		if (pm_idle_save) {
-			pm_idle_save(); /* enables IRQs */
-		} else {
-			acpi_safe_halt();
-			local_irq_enable();
-		}
-
-		return;
-	}
-
-	/*
-	 * Check BM Activity
-	 * -----------------
-	 * Check for bus mastering activity (if required), record, and check
-	 * for demotion.
-	 */
-	if (pr->flags.bm_check) {
-		u32 bm_status = 0;
-		unsigned long diff = jiffies - pr->power.bm_check_timestamp;
-
-		if (diff > 31)
-			diff = 31;
-
-		pr->power.bm_activity <<= diff;
-
-		acpi_get_register(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status);
-		if (bm_status) {
-			pr->power.bm_activity |= 0x1;
-			acpi_set_register(ACPI_BITREG_BUS_MASTER_STATUS, 1);
-		}
-		/*
-		 * PIIX4 Erratum #18: Note that BM_STS doesn't always reflect
-		 * the true state of bus mastering activity; forcing us to
-		 * manually check the BMIDEA bit of each IDE channel.
-		 */
-		else if (errata.piix4.bmisx) {
-			if ((inb_p(errata.piix4.bmisx + 0x02) & 0x01)
-			    || (inb_p(errata.piix4.bmisx + 0x0A) & 0x01))
-				pr->power.bm_activity |= 0x1;
-		}
-
-		pr->power.bm_check_timestamp = jiffies;
-
-		/*
-		 * If bus mastering is or was active this jiffy, demote
-		 * to avoid a faulty transition.  Note that the processor
-		 * won't enter a low-power state during this call (to this
-		 * function) but should upon the next.
-		 *
-		 * TBD: A better policy might be to fallback to the demotion
-		 *      state (use it for this quantum only) istead of
-		 *      demoting -- and rely on duration as our sole demotion
-		 *      qualification.  This may, however, introduce DMA
-		 *      issues (e.g. floppy DMA transfer overrun/underrun).
-		 */
-		if ((pr->power.bm_activity & 0x1) &&
-		    cx->demotion.threshold.bm) {
-			local_irq_enable();
-			next_state = cx->demotion.state;
-			goto end;
-		}
-	}
-
-#ifdef CONFIG_HOTPLUG_CPU
-	/*
-	 * Check for P_LVL2_UP flag before entering C2 and above on
-	 * an SMP system. We do it here instead of doing it at _CST/P_LVL
-	 * detection phase, to work cleanly with logical CPU hotplug.
-	 */
-	if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
-	    !pr->flags.has_cst && !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
-		cx = &pr->power.states[ACPI_STATE_C1];
-#endif
-
-	/*
-	 * Sleep:
-	 * ------
-	 * Invoke the current Cx state to put the processor to sleep.
-	 */
-	if (cx->type == ACPI_STATE_C2 || cx->type == ACPI_STATE_C3) {
-		current_thread_info()->status &= ~TS_POLLING;
-		/*
-		 * TS_POLLING-cleared state must be visible before we
-		 * test NEED_RESCHED:
-		 */
-		smp_mb();
-		if (need_resched()) {
-			current_thread_info()->status |= TS_POLLING;
-			local_irq_enable();
-			return;
-		}
-	}
-
-	switch (cx->type) {
-
-	case ACPI_STATE_C1:
-		/*
-		 * Invoke C1.
-		 * Use the appropriate idle routine, the one that would
-		 * be used without acpi C-states.
-		 */
-		if (pm_idle_save) {
-			pm_idle_save(); /* enables IRQs */
-		} else {
-			acpi_safe_halt();
-			local_irq_enable();
-		}
-
-		/*
-		 * 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;
-
-	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);
-
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
-		/* TSC halts in C2, so notify users */
-		if (tsc_halts_in_c(ACPI_STATE_C2))
-			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;
-		acpi_state_timer_broadcast(pr, cx, 0);
-		break;
-
-	case ACPI_STATE_C3:
-		acpi_unlazy_tlb(smp_processor_id());
-		/*
-		 * Must be done before busmaster disable as we might
-		 * need to access HPET !
-		 */
-		acpi_state_timer_broadcast(pr, cx, 1);
-		/*
-		 * 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()) {
-				/*
-				 * All CPUs are trying to go to C3
-				 * Disable bus master arbitration
-				 */
-				acpi_set_register(ACPI_BITREG_ARB_DISABLE, 1);
-			}
-		} else if (!pr->flags.bm_check) {
-			/* SMP with no shared cache... Invalidate cache  */
-			ACPI_FLUSH_CPU_CACHE();
-		}
-
-		/* Get start time (ticks) */
-		t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
-		/* Invoke C3 */
-		/* 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 && pr->flags.bm_control) {
-			/* Enable bus master arbitration */
-			atomic_dec(&c3_cpu_count);
-			acpi_set_register(ACPI_BITREG_ARB_DISABLE, 0);
-		}
-
-#if defined (CONFIG_GENERIC_TIME) && defined (CONFIG_X86)
-		/* TSC halts in C3, so notify users */
-		if (tsc_halts_in_c(ACPI_STATE_C3))
-			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;
-		acpi_state_timer_broadcast(pr, cx, 0);
-		break;
-
-	default:
-		local_irq_enable();
-		return;
-	}
-	cx->usage++;
-	if ((cx->type != ACPI_STATE_C1) && (sleep_ticks > 0))
-		cx->time += sleep_ticks;
-
-	next_state = pr->power.state;
-
-#ifdef CONFIG_HOTPLUG_CPU
-	/* Don't do promotion/demotion */
-	if ((cx->type == ACPI_STATE_C1) && (num_online_cpus() > 1) &&
-	    !pr->flags.has_cst && !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED)) {
-		next_state = cx;
-		goto end;
-	}
-#endif
-
-	/*
-	 * Promotion?
-	 * ----------
-	 * Track the number of longs (time asleep is greater than threshold)
-	 * and promote when the count threshold is reached.  Note that bus
-	 * mastering activity may prevent promotions.
-	 * Do not promote above max_cstate.
-	 */
-	if (cx->promotion.state &&
-	    ((cx->promotion.state - pr->power.states) <= max_cstate)) {
-		if (sleep_ticks > cx->promotion.threshold.ticks &&
-		  cx->promotion.state->latency <=
-				pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)) {
-			cx->promotion.count++;
-			cx->demotion.count = 0;
-			if (cx->promotion.count >=
-			    cx->promotion.threshold.count) {
-				if (pr->flags.bm_check) {
-					if (!
-					    (pr->power.bm_activity & cx->
-					     promotion.threshold.bm)) {
-						next_state =
-						    cx->promotion.state;
-						goto end;
-					}
-				} else {
-					next_state = cx->promotion.state;
-					goto end;
-				}
-			}
-		}
-	}
-
-	/*
-	 * Demotion?
-	 * ---------
-	 * Track the number of shorts (time asleep is less than time threshold)
-	 * and demote when the usage threshold is reached.
-	 */
-	if (cx->demotion.state) {
-		if (sleep_ticks < cx->demotion.threshold.ticks) {
-			cx->demotion.count++;
-			cx->promotion.count = 0;
-			if (cx->demotion.count >= cx->demotion.threshold.count) {
-				next_state = cx->demotion.state;
-				goto end;
-			}
-		}
-	}
-
-      end:
-	/*
-	 * Demote if current state exceeds max_cstate
-	 * or if the latency of the current state is unacceptable
-	 */
-	if ((pr->power.state - pr->power.states) > max_cstate ||
-		pr->power.state->latency >
-				pm_qos_requirement(PM_QOS_CPU_DMA_LATENCY)) {
-		if (cx->demotion.state)
-			next_state = cx->demotion.state;
-	}
-
-	/*
-	 * New Cx State?
-	 * -------------
-	 * If we're going to start using a new Cx state we must clean up
-	 * from the previous and prepare to use the new.
-	 */
-	if (next_state != pr->power.state)
-		acpi_processor_power_activate(pr, next_state);
-}
-
-static int acpi_processor_set_power_policy(struct acpi_processor *pr)
-{
-	unsigned int i;
-	unsigned int state_is_set = 0;
-	struct acpi_processor_cx *lower = NULL;
-	struct acpi_processor_cx *higher = NULL;
-	struct acpi_processor_cx *cx;
-
-
-	if (!pr)
-		return -EINVAL;
-
-	/*
-	 * This function sets the default Cx state policy (OS idle handler).
-	 * Our scheme is to promote quickly to C2 but more conservatively
-	 * to C3.  We're favoring C2  for its characteristics of low latency
-	 * (quick response), good power savings, and ability to allow bus
-	 * mastering activity.  Note that the Cx state policy is completely
-	 * customizable and can be altered dynamically.
-	 */
-
-	/* startup state */
-	for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
-		cx = &pr->power.states[i];
-		if (!cx->valid)
-			continue;
-
-		if (!state_is_set)
-			pr->power.state = cx;
-		state_is_set++;
-		break;
-	}
-
-	if (!state_is_set)
-		return -ENODEV;
-
-	/* demotion */
-	for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
-		cx = &pr->power.states[i];
-		if (!cx->valid)
-			continue;
-
-		if (lower) {
-			cx->demotion.state = lower;
-			cx->demotion.threshold.ticks = cx->latency_ticks;
-			cx->demotion.threshold.count = 1;
-			if (cx->type == ACPI_STATE_C3)
-				cx->demotion.threshold.bm = bm_history;
-		}
-
-		lower = cx;
-	}
-
-	/* promotion */
-	for (i = (ACPI_PROCESSOR_MAX_POWER - 1); i > 0; i--) {
-		cx = &pr->power.states[i];
-		if (!cx->valid)
-			continue;
-
-		if (higher) {
-			cx->promotion.state = higher;
-			cx->promotion.threshold.ticks = cx->latency_ticks;
-			if (cx->type >= ACPI_STATE_C2)
-				cx->promotion.threshold.count = 4;
-			else
-				cx->promotion.threshold.count = 10;
-			if (higher->type == ACPI_STATE_C3)
-				cx->promotion.threshold.bm = bm_history;
-		}
-
-		higher = cx;
-	}
-
-	return 0;
-}
-#endif /* !CONFIG_CPU_IDLE */
-
 static int acpi_processor_get_power_info_fadt(struct acpi_processor *pr)
 {
 
@@ -1047,11 +541,7 @@ static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
 	 */
 	cx->valid = 1;
 
-#ifndef CONFIG_CPU_IDLE
-	cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
-#else
 	cx->latency_ticks = cx->latency;
-#endif
 
 	return;
 }
@@ -1121,7 +611,6 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
 					  " for C3 to be enabled on SMP systems\n"));
 			return;
 		}
-		acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0);
 	}
 
 	/*
@@ -1132,11 +621,16 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr,
 	 */
 	cx->valid = 1;
 
-#ifndef CONFIG_CPU_IDLE
-	cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
-#else
 	cx->latency_ticks = cx->latency;
-#endif
+	/*
+	 * On older chipsets, BM_RLD needs to be set
+	 * in order for Bus Master activity to wake the
+	 * system from C3.  Newer chipsets handle DMA
+	 * during C3 automatically and BM_RLD is a NOP.
+	 * In either case, the proper way to
+	 * handle BM_RLD is to set it and leave it set.
+	 */
+	acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1);
 
 	return;
 }
@@ -1201,20 +695,6 @@ static int acpi_processor_get_power_info(struct acpi_processor *pr)
 
 	pr->power.count = acpi_processor_power_verify(pr);
 
-#ifndef CONFIG_CPU_IDLE
-	/*
-	 * Set Default Policy
-	 * ------------------
-	 * Now that we know which states are supported, set the default
-	 * policy.  Note that this policy can be changed dynamically
-	 * (e.g. encourage deeper sleeps to conserve battery life when
-	 * not on AC).
-	 */
-	result = acpi_processor_set_power_policy(pr);
-	if (result)
-		return result;
-#endif
-
 	/*
 	 * if one state of type C2 or C3 is available, mark this
 	 * CPU as being "idle manageable"
@@ -1312,69 +792,6 @@ static const struct file_operations acpi_processor_power_fops = {
 	.release = single_release,
 };
 
-#ifndef CONFIG_CPU_IDLE
-
-int acpi_processor_cst_has_changed(struct acpi_processor *pr)
-{
-	int result = 0;
-
-	if (boot_option_idle_override)
-		return 0;
-
-	if (!pr)
-		return -EINVAL;
-
-	if (nocst) {
-		return -ENODEV;
-	}
-
-	if (!pr->flags.power_setup_done)
-		return -ENODEV;
-
-	/*
-	 * Fall back to the default idle loop, when pm_idle_save had
-	 * been initialized.
-	 */
-	if (pm_idle_save) {
-		pm_idle = pm_idle_save;
-		/* Relies on interrupts forcing exit from idle. */
-		synchronize_sched();
-	}
-
-	pr->flags.power = 0;
-	result = acpi_processor_get_power_info(pr);
-	if ((pr->flags.power == 1) && (pr->flags.power_setup_done))
-		pm_idle = acpi_processor_idle;
-
-	return result;
-}
-
-#ifdef CONFIG_SMP
-static void smp_callback(void *v)
-{
-	/* we already woke the CPU up, nothing more to do */
-}
-
-/*
- * This function gets called when a part of the kernel has a new latency
- * requirement.  This means we need to get all processors out of their C-state,
- * and then recalculate a new suitable C-state. Just do a cross-cpu IPI; that
- * wakes them all right up.
- */
-static int acpi_processor_latency_notify(struct notifier_block *b,
-		unsigned long l, void *v)
-{
-	smp_call_function(smp_callback, NULL, 1);
-	return NOTIFY_OK;
-}
-
-static struct notifier_block acpi_processor_latency_notifier = {
-	.notifier_call = acpi_processor_latency_notify,
-};
-
-#endif
-
-#else /* CONFIG_CPU_IDLE */
 
 /**
  * acpi_idle_bm_check - checks if bus master activity was detected
@@ -1383,7 +800,7 @@ static int acpi_idle_bm_check(void)
 {
 	u32 bm_status = 0;
 
-	acpi_get_register(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status);
+	acpi_get_register_unlocked(ACPI_BITREG_BUS_MASTER_STATUS, &bm_status);
 	if (bm_status)
 		acpi_set_register(ACPI_BITREG_BUS_MASTER_STATUS, 1);
 	/*
@@ -1400,25 +817,6 @@ static int acpi_idle_bm_check(void)
 }
 
 /**
- * acpi_idle_update_bm_rld - updates the BM_RLD bit depending on target state
- * @pr: the processor
- * @target: the new target state
- */
-static inline void acpi_idle_update_bm_rld(struct acpi_processor *pr,
-					   struct acpi_processor_cx *target)
-{
-	if (pr->flags.bm_rld_set && target->type != ACPI_STATE_C3) {
-		acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0);
-		pr->flags.bm_rld_set = 0;
-	}
-
-	if (!pr->flags.bm_rld_set && target->type == ACPI_STATE_C3) {
-		acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1);
-		pr->flags.bm_rld_set = 1;
-	}
-}
-
-/**
  * acpi_idle_do_entry - a helper function that does C2 and C3 type entry
  * @cx: cstate data
  *
@@ -1473,9 +871,6 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
 		return 0;
 	}
 
-	if (pr->flags.bm_check)
-		acpi_idle_update_bm_rld(pr, cx);
-
 	t1 = inl(acpi_gbl_FADT.xpm_timer_block.address);
 	acpi_idle_do_entry(cx);
 	t2 = inl(acpi_gbl_FADT.xpm_timer_block.address);
@@ -1527,9 +922,6 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
 	 */
 	acpi_state_timer_broadcast(pr, cx, 1);
 
-	if (pr->flags.bm_check)
-		acpi_idle_update_bm_rld(pr, cx);
-
 	if (cx->type == ACPI_STATE_C3)
 		ACPI_FLUSH_CPU_CACHE();
 
@@ -1621,8 +1013,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 	 */
 	acpi_state_timer_broadcast(pr, cx, 1);
 
-	acpi_idle_update_bm_rld(pr, cx);
-
 	/*
 	 * disable bus master
 	 * bm_check implies we need ARB_DIS
@@ -1795,8 +1185,6 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
 	return ret;
 }
 
-#endif /* CONFIG_CPU_IDLE */
-
 int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
 			      struct acpi_device *device)
 {
@@ -1825,10 +1213,6 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
 			       "ACPI: processor limited to max C-state %d\n",
 			       max_cstate);
 		first_run++;
-#if !defined(CONFIG_CPU_IDLE) && defined(CONFIG_SMP)
-		pm_qos_add_notifier(PM_QOS_CPU_DMA_LATENCY,
-				&acpi_processor_latency_notifier);
-#endif
 	}
 
 	if (!pr)
@@ -1852,11 +1236,9 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
 	 * platforms that only support C1.
 	 */
 	if (pr->flags.power) {
-#ifdef CONFIG_CPU_IDLE
 		acpi_processor_setup_cpuidle(pr);
 		if (cpuidle_register_device(&pr->power.dev))
 			return -EIO;
-#endif
 
 		printk(KERN_INFO PREFIX "CPU%d (power states:", pr->id);
 		for (i = 1; i <= pr->power.count; i++)
@@ -1864,13 +1246,6 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
 				printk(" C%d[C%d]", i,
 				       pr->power.states[i].type);
 		printk(")\n");
-
-#ifndef CONFIG_CPU_IDLE
-		if (pr->id == 0) {
-			pm_idle_save = pm_idle;
-			pm_idle = acpi_processor_idle;
-		}
-#endif
 	}
 
 	/* 'power' [R] */
@@ -1889,34 +1264,12 @@ int acpi_processor_power_exit(struct acpi_processor *pr,
 	if (boot_option_idle_override)
 		return 0;
 
-#ifdef CONFIG_CPU_IDLE
 	cpuidle_unregister_device(&pr->power.dev);
-#endif
 	pr->flags.power_setup_done = 0;
 
 	if (acpi_device_dir(device))
 		remove_proc_entry(ACPI_PROCESSOR_FILE_POWER,
 				  acpi_device_dir(device));
 
-#ifndef CONFIG_CPU_IDLE
-
-	/* Unregister the idle handler when processor #0 is removed. */
-	if (pr->id == 0) {
-		if (pm_idle_save)
-			pm_idle = pm_idle_save;
-
-		/*
-		 * We are about to unload the current idle thread pm callback
-		 * (pm_idle), Wait for all processors to update cached/local
-		 * copies of pm_idle before proceeding.
-		 */
-		cpu_idle_wait();
-#ifdef CONFIG_SMP
-		pm_qos_remove_notifier(PM_QOS_CPU_DMA_LATENCY,
-				&acpi_processor_latency_notifier);
-#endif
-	}
-#endif
-
 	return 0;
 }
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 846e227592d..9cc769b587f 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -31,14 +31,6 @@
 #include <linux/init.h>
 #include <linux/cpufreq.h>
 
-#ifdef CONFIG_X86_ACPI_CPUFREQ_PROC_INTF
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/mutex.h>
-
-#include <asm/uaccess.h>
-#endif
-
 #ifdef CONFIG_X86
 #include <asm/cpufeature.h>
 #endif
@@ -434,96 +426,6 @@ int acpi_processor_notify_smm(struct module *calling_module)
 
 EXPORT_SYMBOL(acpi_processor_notify_smm);
 
-#ifdef CONFIG_X86_ACPI_CPUFREQ_PROC_INTF
-/* /proc/acpi/processor/../performance interface (DEPRECATED) */
-
-static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file);
-static struct file_operations acpi_processor_perf_fops = {
-	.owner = THIS_MODULE,
-	.open = acpi_processor_perf_open_fs,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
-
-static int acpi_processor_perf_seq_show(struct seq_file *seq, void *offset)
-{
-	struct acpi_processor *pr = seq->private;
-	int i;
-
-
-	if (!pr)
-		goto end;
-
-	if (!pr->performance) {
-		seq_puts(seq, "<not supported>\n");
-		goto end;
-	}
-
-	seq_printf(seq, "state count:             %d\n"
-		   "active state:            P%d\n",
-		   pr->performance->state_count, pr->performance->state);
-
-	seq_puts(seq, "states:\n");
-	for (i = 0; i < pr->performance->state_count; i++)
-		seq_printf(seq,
-			   "   %cP%d:                  %d MHz, %d mW, %d uS\n",
-			   (i == pr->performance->state ? '*' : ' '), i,
-			   (u32) pr->performance->states[i].core_frequency,
-			   (u32) pr->performance->states[i].power,
-			   (u32) pr->performance->states[i].transition_latency);
-
-      end:
-	return 0;
-}
-
-static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file)
-{
-	return single_open(file, acpi_processor_perf_seq_show,
-			   PDE(inode)->data);
-}
-
-static void acpi_cpufreq_add_file(struct acpi_processor *pr)
-{
-	struct acpi_device *device = NULL;
-
-
-	if (acpi_bus_get_device(pr->handle, &device))
-		return;
-
-	/* add file 'performance' [R/W] */
-	proc_create_data(ACPI_PROCESSOR_FILE_PERFORMANCE, S_IFREG | S_IRUGO,
-			 acpi_device_dir(device),
-			 &acpi_processor_perf_fops, acpi_driver_data(device));
-	return;
-}
-
-static void acpi_cpufreq_remove_file(struct acpi_processor *pr)
-{
-	struct acpi_device *device = NULL;
-
-
-	if (acpi_bus_get_device(pr->handle, &device))
-		return;
-
-	/* remove file 'performance' */
-	remove_proc_entry(ACPI_PROCESSOR_FILE_PERFORMANCE,
-			  acpi_device_dir(device));
-
-	return;
-}
-
-#else
-static void acpi_cpufreq_add_file(struct acpi_processor *pr)
-{
-	return;
-}
-static void acpi_cpufreq_remove_file(struct acpi_processor *pr)
-{
-	return;
-}
-#endif				/* CONFIG_X86_ACPI_CPUFREQ_PROC_INTF */
-
 static int acpi_processor_get_psd(struct acpi_processor	*pr)
 {
 	int result = 0;
@@ -747,14 +649,12 @@ err_ret:
 }
 EXPORT_SYMBOL(acpi_processor_preregister_performance);
 
-
 int
 acpi_processor_register_performance(struct acpi_processor_performance
 				    *performance, unsigned int cpu)
 {
 	struct acpi_processor *pr;
 
-
 	if (!(acpi_processor_ppc_status & PPC_REGISTERED))
 		return -EINVAL;
 
@@ -781,8 +681,6 @@ acpi_processor_register_performance(struct acpi_processor_performance
 		return -EIO;
 	}
 
-	acpi_cpufreq_add_file(pr);
-
 	mutex_unlock(&performance_mutex);
 	return 0;
 }
@@ -795,7 +693,6 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
 {
 	struct acpi_processor *pr;
 
-
 	mutex_lock(&performance_mutex);
 
 	pr = per_cpu(processors, cpu);
@@ -808,8 +705,6 @@ acpi_processor_unregister_performance(struct acpi_processor_performance
 		kfree(pr->performance->states);
 	pr->performance = NULL;
 
-	acpi_cpufreq_remove_file(pr);
-
 	mutex_unlock(&performance_mutex);
 
 	return;
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 7e3c609cbef..519266654f0 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -90,31 +90,6 @@ void __init acpi_old_suspend_ordering(void)
 	old_suspend_ordering = true;
 }
 
-/*
- * According to the ACPI specification the BIOS should make sure that ACPI is
- * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states.  Still,
- * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI
- * on such systems during resume.  Unfortunately that doesn't help in
- * particularly pathological cases in which SCI_EN has to be set directly on
- * resume, although the specification states very clearly that this flag is
- * owned by the hardware.  The set_sci_en_on_resume variable will be set in such
- * cases.
- */
-static bool set_sci_en_on_resume;
-/*
- * The ACPI specification wants us to save NVS memory regions during hibernation
- * and to restore them during the subsequent resume.  However, it is not certain
- * if this mechanism is going to work on all machines, so we allow the user to
- * disable this mechanism using the 'acpi_sleep=s4_nonvs' kernel command line
- * option.
- */
-static bool s4_no_nvs;
-
-void __init acpi_s4_no_nvs(void)
-{
-	s4_no_nvs = true;
-}
-
 /**
  *	acpi_pm_disable_gpes - Disable the GPEs.
  */
@@ -193,6 +168,18 @@ static void acpi_pm_end(void)
 #endif /* CONFIG_ACPI_SLEEP */
 
 #ifdef CONFIG_SUSPEND
+/*
+ * According to the ACPI specification the BIOS should make sure that ACPI is
+ * enabled and SCI_EN bit is set on wake-up from S1 - S3 sleep states.  Still,
+ * some BIOSes don't do that and therefore we use acpi_enable() to enable ACPI
+ * on such systems during resume.  Unfortunately that doesn't help in
+ * particularly pathological cases in which SCI_EN has to be set directly on
+ * resume, although the specification states very clearly that this flag is
+ * owned by the hardware.  The set_sci_en_on_resume variable will be set in such
+ * cases.
+ */
+static bool set_sci_en_on_resume;
+
 extern void do_suspend_lowlevel(void);
 
 static u32 acpi_suspend_states[] = {
@@ -396,6 +383,20 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
 #endif /* CONFIG_SUSPEND */
 
 #ifdef CONFIG_HIBERNATION
+/*
+ * The ACPI specification wants us to save NVS memory regions during hibernation
+ * and to restore them during the subsequent resume.  However, it is not certain
+ * if this mechanism is going to work on all machines, so we allow the user to
+ * disable this mechanism using the 'acpi_sleep=s4_nonvs' kernel command line
+ * option.
+ */
+static bool s4_no_nvs;
+
+void __init acpi_s4_no_nvs(void)
+{
+	s4_no_nvs = true;
+}
+
 static unsigned long s4_hardware_signature;
 static struct acpi_table_facs *facs;
 static bool nosigcheck;
@@ -679,7 +680,7 @@ static void acpi_power_off_prepare(void)
 static void acpi_power_off(void)
 {
 	/* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
-	printk("%s called\n", __func__);
+	printk(KERN_DEBUG "%s called\n", __func__);
 	local_irq_disable();
 	acpi_enable_wakeup_device(ACPI_STATE_S5);
 	acpi_enter_sleep_state(ACPI_STATE_S5);
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 775c97a282b..a8852952fac 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -293,7 +293,12 @@ static void __init check_multiple_madt(void)
 
 int __init acpi_table_init(void)
 {
-	acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
+	acpi_status status;
+
+	status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0);
+	if (ACPI_FAILURE(status))
+		return 1;
+
 	check_multiple_madt();
 	return 0;
 }
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index f261737636d..bb5ed059114 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1020,7 +1020,7 @@ acpi_video_device_brightness_seq_show(struct seq_file *seq, void *offset)
 	}
 
 	seq_printf(seq, "levels: ");
-	for (i = 0; i < dev->brightness->count; i++)
+	for (i = 2; i < dev->brightness->count; i++)
 		seq_printf(seq, " %d", dev->brightness->levels[i]);
 	seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr);
 
@@ -1059,7 +1059,7 @@ acpi_video_device_write_brightness(struct file *file,
 		return -EFAULT;
 
 	/* validate through the list of available levels */
-	for (i = 0; i < dev->brightness->count; i++)
+	for (i = 2; i < dev->brightness->count; i++)
 		if (level == dev->brightness->levels[i]) {
 			if (ACPI_SUCCESS
 			    (acpi_video_device_lcd_set_level(dev, level)))
@@ -1260,7 +1260,7 @@ static int acpi_video_bus_POST_info_seq_show(struct seq_file *seq, void *offset)
 			printk(KERN_WARNING PREFIX
 			       "This indicates a BIOS bug. Please contact the manufacturer.\n");
 		}
-		printk("%llx\n", options);
+		printk(KERN_WARNING "%llx\n", options);
 		seq_printf(seq, "can POST: <integrated video>");
 		if (options & 2)
 			seq_printf(seq, " <PCI video>");
@@ -1712,7 +1712,7 @@ acpi_video_get_next_level(struct acpi_video_device *device,
 	max = max_below = 0;
 	min = min_above = 255;
 	/* Find closest level to level_current */
-	for (i = 0; i < device->brightness->count; i++) {
+	for (i = 2; i < device->brightness->count; i++) {
 		l = device->brightness->levels[i];
 		if (abs(l - level_current) < abs(delta)) {
 			delta = l - level_current;
@@ -1722,7 +1722,7 @@ acpi_video_get_next_level(struct acpi_video_device *device,
 	}
 	/* Ajust level_current to closest available level */
 	level_current += delta;
-	for (i = 0; i < device->brightness->count; i++) {
+	for (i = 2; i < device->brightness->count; i++) {
 		l = device->brightness->levels[i];
 		if (l < min)
 			min = l;
@@ -2006,6 +2006,12 @@ static int acpi_video_bus_add(struct acpi_device *device)
 			device->pnp.bus_id[3] = '0' + instance;
 		instance ++;
 	}
+	/* a hack to fix the duplicate name "VGA" problem on Pa 3553 */
+	if (!strcmp(device->pnp.bus_id, "VGA")) {
+		if (instance)
+			device->pnp.bus_id[3] = '0' + instance;
+		instance++;
+	}
 
 	video->device = device;
 	strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);