Merge tag 'pm+acpi-2-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more ACPI and power management updates from Rafael Wysocki:

- ACPI-based device hotplug fixes for issues introduced recently and a
fix for an older error code path bug in the ACPI PCI host bridge
driver

- Fix for recently broken OMAP cpufreq build from Viresh Kumar

- Fix for a recent hibernation regression related to s2disk

- Fix for a locking-related regression in the ACPI EC driver from
Puneet Kumar

- System suspend error code path fix related to runtime PM and runtime
PM documentation update from Ulf Hansson

- cpufreq's conservative governor fix from Xiaoguang Chen

- New processor IDs for intel_idle and turbostat and removal of an
obsolete Kconfig option from Len Brown

- New device IDs for the ACPI LPSS (Low-Power Subsystem) driver and
ACPI-based PCI hotplug (ACPIPHP) cleanup from Mika Westerberg

- Removal of several ACPI video DMI blacklist entries that are not
necessary any more from Aaron Lu

- Rework of the ACPI companion representation in struct device and code
cleanup related to that change from Rafael J Wysocki, Lan Tianyu and
Jarkko Nikula

- Fixes for assigning names to ACPI-enumerated I2C and SPI devices from
Jarkko Nikula

* tag 'pm+acpi-2-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (24 commits)
PCI / hotplug / ACPI: Drop unused acpiphp_debug declaration
ACPI / scan: Set flags.match_driver in acpi_bus_scan_fixed()
ACPI / PCI root: Clear driver_data before failing enumeration
ACPI / hotplug: Fix PCI host bridge hot removal
ACPI / hotplug: Fix acpi_bus_get_device() return value check
cpufreq: governor: Remove fossil comment in the cpufreq_governor_dbs()
ACPI / video: clean up DMI table for initial black screen problem
ACPI / EC: Ensure lock is acquired before accessing ec struct members
PM / Hibernate: Do not crash kernel in free_basic_memory_bitmaps()
ACPI / AC: Remove struct acpi_device pointer from struct acpi_ac
spi: Use stable dev_name for ACPI enumerated SPI slaves
i2c: Use stable dev_name for ACPI enumerated I2C slaves
ACPI: Provide acpi_dev_name accessor for struct acpi_device device name
ACPI / bind: Use (put|get)_device() on ACPI device objects too
ACPI: Eliminate the DEVICE_ACPI_HANDLE() macro
ACPI / driver core: Store an ACPI device pointer in struct acpi_dev_node
cpufreq: OMAP: Fix compilation error 'r & ret undeclared'
PM / Runtime: Fix error path for prepare
PM / Runtime: Update documentation around probe|remove|suspend
cpufreq: conservative: set requested_freq to policy max when it is over policy max
...

Documentation/power/runtime_pm.txt

···
 should be used.  Of course, for this purpose the device's runtime PM has to be
 enabled earlier by calling pm_runtime_enable().
 
-If the device bus type's or driver's ->probe() callback runs
-pm_runtime_suspend() or pm_runtime_idle() or their asynchronous counterparts,
-they will fail returning -EAGAIN, because the device's usage counter is
-incremented by the driver core before executing ->probe().  Still, it may be
-desirable to suspend the device as soon as ->probe() has finished, so the driver
-core uses pm_runtime_put_sync() to invoke the subsystem-level idle callback for
-the device at that time.
+It may be desirable to suspend the device once ->probe() has finished.
+Therefore the driver core uses the asyncronous pm_request_idle() to submit a
+request to execute the subsystem-level idle callback for the device at that
+time.  A driver that makes use of the runtime autosuspend feature, may want to
+update the last busy mark before returning from ->probe().
 
 Moreover, the driver core prevents runtime PM callbacks from racing with the bus
 notifier callback in __device_release_driver(), which is necessary, because the
···
     __pm_runtime_disable() with 'false' as the second argument for every device
     right before executing the subsystem-level .suspend_late() callback for it.
 
-  * During system resume it calls pm_runtime_enable() and pm_runtime_put_sync()
+  * During system resume it calls pm_runtime_enable() and pm_runtime_put()
     for every device right after executing the subsystem-level .resume_early()
     callback and right after executing the subsystem-level .resume() callback
     for it, respectively.

arch/ia64/hp/common/sba_iommu.c

···
 	if (PCI_CONTROLLER(bus)->iommu)
 		return;
 
-	handle = PCI_CONTROLLER(bus)->acpi_handle;
+	handle = acpi_device_handle(PCI_CONTROLLER(bus)->companion);
 	if (!handle)
 		return;
 

arch/ia64/include/asm/pci.h

···
 };
 
 struct pci_controller {
-	void *acpi_handle;
+	struct acpi_device *companion;
 	void *iommu;
 	int segment;
 	int node;		/* nearest node with memory or -1 for global allocation */

arch/ia64/pci/pci.c

···
 	if (!controller)
 		return NULL;
 
-	controller->acpi_handle = device->handle;
+	controller->companion = device;
 
-	pxm = acpi_get_pxm(controller->acpi_handle);
+	pxm = acpi_get_pxm(device->handle);
 #ifdef CONFIG_NUMA
 	if (pxm >= 0)
 		controller->node = pxm_to_node(pxm);
···
 {
 	struct pci_controller *controller = bridge->bus->sysdata;
 
-	ACPI_HANDLE_SET(&bridge->dev, controller->acpi_handle);
+	ACPI_COMPANION_SET(&bridge->dev, controller->companion);
 	return 0;
 }
 

arch/ia64/sn/kernel/io_acpi_init.c

···
 	struct acpi_resource_vendor_typed *vendor;
 
 
-	handle = PCI_CONTROLLER(bus)->acpi_handle;
+	handle = acpi_device_handle(PCI_CONTROLLER(bus)->companion);
 	status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS,
 					  &sn_uuid, &buffer);
 	if (ACPI_FAILURE(status)) {
···
 	acpi_status status;
 	struct acpi_buffer name_buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
-	rootbus_handle = PCI_CONTROLLER(dev)->acpi_handle;
+	rootbus_handle = acpi_device_handle(PCI_CONTROLLER(dev)->companion);
         status = acpi_evaluate_integer(rootbus_handle, METHOD_NAME__SEG, NULL,
                                        &segment);
         if (ACPI_SUCCESS(status)) {

arch/x86/include/asm/pci.h

···
 	int		domain;		/* PCI domain */
 	int		node;		/* NUMA node */
 #ifdef CONFIG_ACPI
-	void		*acpi;		/* ACPI-specific data */
+	struct acpi_device *companion;	/* ACPI companion device */
 #endif
 #ifdef CONFIG_X86_64
 	void		*iommu;		/* IOMMU private data */

arch/x86/include/uapi/asm/msr-index.h

···
 #define MSR_PP1_ENERGY_STATUS		0x00000641
 #define MSR_PP1_POLICY			0x00000642
 
+#define MSR_CORE_C1_RES			0x00000660
+
 #define MSR_AMD64_MC0_MASK		0xc0010044
 
 #define MSR_IA32_MCx_CTL(x)		(MSR_IA32_MC0_CTL + 4*(x))

arch/x86/pci/acpi.c

···
 	sd = &info->sd;
 	sd->domain = domain;
 	sd->node = node;
-	sd->acpi = device->handle;
+	sd->companion = device;
 	/*
 	 * Maybe the desired pci bus has been already scanned. In such case
 	 * it is unnecessary to scan the pci bus with the given domain,busnum.
···
 {
 	struct pci_sysdata *sd = bridge->bus->sysdata;
 
-	ACPI_HANDLE_SET(&bridge->dev, sd->acpi);
+	ACPI_COMPANION_SET(&bridge->dev, sd->companion);
 	return 0;
 }
 

drivers/acpi/Kconfig

···
 	  initrd, therefore it's safe to say Y.
 	  See Documentation/acpi/initrd_table_override.txt for details
 
-config ACPI_BLACKLIST_YEAR
-	int "Disable ACPI for systems before Jan 1st this year" if X86_32
-	default 0
-	help
-	  Enter a 4-digit year, e.g., 2001, to disable ACPI by default
-	  on platforms with DMI BIOS date before January 1st that year.
-	  "acpi=force" can be used to override this mechanism.
-
-	  Enter 0 to disable this mechanism and allow ACPI to
-	  run by default no matter what the year.  (default)
-
 config ACPI_DEBUG
 	bool "Debug Statements"
 	default n

drivers/acpi/ac.c

···
 
 struct acpi_ac {
 	struct power_supply charger;
-	struct acpi_device *adev;
 	struct platform_device *pdev;
 	unsigned long long state;
 };
···
 static int acpi_ac_get_state(struct acpi_ac *ac)
 {
 	acpi_status status;
+	acpi_handle handle = ACPI_HANDLE(&ac->pdev->dev);
 
-	status = acpi_evaluate_integer(ac->adev->handle, "_PSR", NULL,
+	status = acpi_evaluate_integer(handle, "_PSR", NULL,
 				       &ac->state);
 	if (ACPI_FAILURE(status)) {
 		ACPI_EXCEPTION((AE_INFO, status,
···
 static void acpi_ac_notify_handler(acpi_handle handle, u32 event, void *data)
 {
 	struct acpi_ac *ac = data;
+	struct acpi_device *adev;
 
 	if (!ac)
 		return;
···
 			msleep(ac_sleep_before_get_state_ms);
 
 		acpi_ac_get_state(ac);
-		acpi_bus_generate_netlink_event(ac->adev->pnp.device_class,
+		adev = ACPI_COMPANION(&ac->pdev->dev);
+		acpi_bus_generate_netlink_event(adev->pnp.device_class,
 						dev_name(&ac->pdev->dev),
 						event, (u32) ac->state);
-		acpi_notifier_call_chain(ac->adev, event, (u32) ac->state);
+		acpi_notifier_call_chain(adev, event, (u32) ac->state);
 		kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE);
 	}
 
···
 	if (!pdev)
 		return -EINVAL;
 
-	result = acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev);
-	if (result)
+	adev = ACPI_COMPANION(&pdev->dev);
+	if (!adev)
 		return -ENODEV;
 
 	ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);
···
 
 	strcpy(acpi_device_name(adev), ACPI_AC_DEVICE_NAME);
 	strcpy(acpi_device_class(adev), ACPI_AC_CLASS);
-	ac->adev = adev;
 	ac->pdev = pdev;
 	platform_set_drvdata(pdev, ac);
 

drivers/acpi/acpi_lpss.c

···
 	{ "80860F41", (unsigned long)&byt_i2c_dev_desc },
 	{ "INT33B2", },
 
+	{ "INT3430", (unsigned long)&lpt_dev_desc },
+	{ "INT3431", (unsigned long)&lpt_dev_desc },
+	{ "INT3432", (unsigned long)&lpt_dev_desc },
+	{ "INT3433", (unsigned long)&lpt_dev_desc },
+	{ "INT3434", (unsigned long)&lpt_uart_dev_desc },
+	{ "INT3435", (unsigned long)&lpt_uart_dev_desc },
+	{ "INT3436", (unsigned long)&lpt_sdio_dev_desc },
+	{ "INT3437", },
+
 	{ }
 };
 

drivers/acpi/acpi_platform.c

···
 	pdevinfo.id = -1;
 	pdevinfo.res = resources;
 	pdevinfo.num_res = count;
-	pdevinfo.acpi_node.handle = adev->handle;
+	pdevinfo.acpi_node.companion = adev;
 	pdev = platform_device_register_full(&pdevinfo);
 	if (IS_ERR(pdev)) {
 		dev_err(&adev->dev, "platform device creation failed: %ld\n",

drivers/acpi/blacklist.c

···
 	{""}
 };
 
-#if	CONFIG_ACPI_BLACKLIST_YEAR
-
-static int __init blacklist_by_year(void)
-{
-	int year;
-
-	/* Doesn't exist? Likely an old system */
-	if (!dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL)) {
-		printk(KERN_ERR PREFIX "no DMI BIOS year, "
-			"acpi=force is required to enable ACPI\n" );
-		return 1;
-	}
-	/* 0? Likely a buggy new BIOS */
-	if (year == 0) {
-		printk(KERN_ERR PREFIX "DMI BIOS year==0, "
-			"assuming ACPI-capable machine\n" );
-		return 0;
-	}
-	if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
-		printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
-		       "acpi=force is required to enable ACPI\n",
-		       year, CONFIG_ACPI_BLACKLIST_YEAR);
-		return 1;
-	}
-	return 0;
-}
-#else
-static inline int blacklist_by_year(void)
-{
-	return 0;
-}
-#endif
-
 int __init acpi_blacklisted(void)
 {
 	int i = 0;
···
 			i++;
 		}
 	}
-
-	blacklisted += blacklist_by_year();
 
 	dmi_check_system(acpi_osi_dmi_table);
 

drivers/acpi/device_pm.c

···
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
-#include <linux/device.h>
+#include <linux/acpi.h>
 #include <linux/export.h>
 #include <linux/mutex.h>
 #include <linux/pm_qos.h>
 #include <linux/pm_runtime.h>
-
-#include <acpi/acpi.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
 
 #include "internal.h"
 
···
  */
 int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p, int d_max_in)
 {
-	acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
+	acpi_handle handle = ACPI_HANDLE(dev);
 	struct acpi_device *adev;
 	int ret, d_min, d_max;
 
···
 	if (!device_run_wake(phys_dev))
 		return -EINVAL;
 
-	handle = DEVICE_ACPI_HANDLE(phys_dev);
+	handle = ACPI_HANDLE(phys_dev);
 	if (!handle || acpi_bus_get_device(handle, &adev)) {
 		dev_dbg(phys_dev, "ACPI handle without context in %s!\n",
 			__func__);
···
 	if (!device_can_wakeup(dev))
 		return -EINVAL;
 
-	handle = DEVICE_ACPI_HANDLE(dev);
+	handle = ACPI_HANDLE(dev);
 	if (!handle || acpi_bus_get_device(handle, &adev)) {
 		dev_dbg(dev, "ACPI handle without context in %s!\n", __func__);
 		return -ENODEV;
···
  */
 struct acpi_device *acpi_dev_pm_get_node(struct device *dev)
 {
-	acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
+	acpi_handle handle = ACPI_HANDLE(dev);
 	struct acpi_device *adev;
 
 	return handle && !acpi_bus_get_device(handle, &adev) ? adev : NULL;

drivers/acpi/ec.c

···
 static void advance_transaction(struct acpi_ec *ec, u8 status)
 {
 	unsigned long flags;
-	struct transaction *t = ec->curr;
+	struct transaction *t;
 
 	spin_lock_irqsave(&ec->lock, flags);
+	t = ec->curr;
 	if (!t)
 		goto unlock;
 	if (t->wlen > t->wi) {

drivers/acpi/glue.c

···
 
 int acpi_bind_one(struct device *dev, acpi_handle handle)
 {
-	struct acpi_device *acpi_dev;
-	acpi_status status;
+	struct acpi_device *acpi_dev = NULL;
 	struct acpi_device_physical_node *physical_node, *pn;
 	char physical_node_name[PHYSICAL_NODE_NAME_SIZE];
 	struct list_head *physnode_list;
 	unsigned int node_id;
 	int retval = -EINVAL;
 
-	if (ACPI_HANDLE(dev)) {
+	if (ACPI_COMPANION(dev)) {
 		if (handle) {
-			dev_warn(dev, "ACPI handle is already set\n");
+			dev_warn(dev, "ACPI companion already set\n");
 			return -EINVAL;
 		} else {
-			handle = ACPI_HANDLE(dev);
+			acpi_dev = ACPI_COMPANION(dev);
 		}
+	} else {
+		acpi_bus_get_device(handle, &acpi_dev);
 	}
-	if (!handle)
+	if (!acpi_dev)
 		return -EINVAL;
 
+	get_device(&acpi_dev->dev);
 	get_device(dev);
-	status = acpi_bus_get_device(handle, &acpi_dev);
-	if (ACPI_FAILURE(status))
-		goto err;
-
 	physical_node = kzalloc(sizeof(*physical_node), GFP_KERNEL);
 	if (!physical_node) {
 		retval = -ENOMEM;
···
 
 			dev_warn(dev, "Already associated with ACPI node\n");
 			kfree(physical_node);
-			if (ACPI_HANDLE(dev) != handle)
+			if (ACPI_COMPANION(dev) != acpi_dev)
 				goto err;
 
 			put_device(dev);
+			put_device(&acpi_dev->dev);
 			return 0;
 		}
 		if (pn->node_id == node_id) {
···
 	list_add(&physical_node->node, physnode_list);
 	acpi_dev->physical_node_count++;
 
-	if (!ACPI_HANDLE(dev))
-		ACPI_HANDLE_SET(dev, acpi_dev->handle);
+	if (!ACPI_COMPANION(dev))
+		ACPI_COMPANION_SET(dev, acpi_dev);
 
 	acpi_physnode_link_name(physical_node_name, node_id);
 	retval = sysfs_create_link(&acpi_dev->dev.kobj, &dev->kobj,
···
 	return 0;
 
  err:
-	ACPI_HANDLE_SET(dev, NULL);
+	ACPI_COMPANION_SET(dev, NULL);
 	put_device(dev);
+	put_device(&acpi_dev->dev);
 	return retval;
 }
 EXPORT_SYMBOL_GPL(acpi_bind_one);
 
 int acpi_unbind_one(struct device *dev)
 {
+	struct acpi_device *acpi_dev = ACPI_COMPANION(dev);
 	struct acpi_device_physical_node *entry;
-	struct acpi_device *acpi_dev;
-	acpi_status status;
 
-	if (!ACPI_HANDLE(dev))
+	if (!acpi_dev)
 		return 0;
-
-	status = acpi_bus_get_device(ACPI_HANDLE(dev), &acpi_dev);
-	if (ACPI_FAILURE(status)) {
-		dev_err(dev, "Oops, ACPI handle corrupt in %s()\n", __func__);
-		return -EINVAL;
-	}
 
 	mutex_lock(&acpi_dev->physical_node_lock);
 
···
 			acpi_physnode_link_name(physnode_name, entry->node_id);
 			sysfs_remove_link(&acpi_dev->dev.kobj, physnode_name);
 			sysfs_remove_link(&dev->kobj, "firmware_node");
-			ACPI_HANDLE_SET(dev, NULL);
-			/* acpi_bind_one() increase refcnt by one. */
+			ACPI_COMPANION_SET(dev, NULL);
+			/* Drop references taken by acpi_bind_one(). */
 			put_device(dev);
+			put_device(&acpi_dev->dev);
 			kfree(entry);
 			break;
 		}
···
 	return 0;
 }
 EXPORT_SYMBOL_GPL(acpi_unbind_one);
+
+void acpi_preset_companion(struct device *dev, acpi_handle parent, u64 addr)
+{
+	struct acpi_device *adev;
+
+	if (!acpi_bus_get_device(acpi_get_child(parent, addr), &adev))
+		ACPI_COMPANION_SET(dev, adev);
+}
+EXPORT_SYMBOL_GPL(acpi_preset_companion);
 
 static int acpi_platform_notify(struct device *dev)
 {

drivers/acpi/pci_root.c

···
 		dev_err(&device->dev,
 			"Bus %04x:%02x not present in PCI namespace\n",
 			root->segment, (unsigned int)root->secondary.start);
+		device->driver_data = NULL;
 		result = -ENODEV;
 		goto end;
 	}

drivers/acpi/scan.c

···
 {
 	struct acpi_device *device = data;
 	acpi_handle handle = device->handle;
-	struct acpi_scan_handler *handler;
 	u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
 	int error;
 
 	lock_device_hotplug();
 	mutex_lock(&acpi_scan_lock);
 
-	handler = device->handler;
-	if (!handler || !handler->hotplug.enabled) {
-		put_device(&device->dev);
-		goto err_support;
-	}
-
 	if (ost_src == ACPI_NOTIFY_EJECT_REQUEST)
 		acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
 					  ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
 
-	if (handler->hotplug.mode == AHM_CONTAINER)
+	if (device->handler && device->handler->hotplug.mode == AHM_CONTAINER)
 		kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
 
 	error = acpi_scan_hot_remove(device);
···
 		break;
 	case ACPI_NOTIFY_EJECT_REQUEST:
 		acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
-		status = acpi_bus_get_device(handle, &adev);
-		if (ACPI_FAILURE(status))
+		if (acpi_bus_get_device(handle, &adev))
 			goto err_out;
 
 		get_device(&adev->dev);
···
 		if (result)
 			return result;
 
+		device->flags.match_driver = true;
 		result = device_attach(&device->dev);
 		if (result < 0)
 			return result;
···
 		if (result)
 			return result;
 
+		device->flags.match_driver = true;
 		result = device_attach(&device->dev);
 	}
 

drivers/acpi/video.c

···
 module_param(allow_duplicates, bool, 0644);
 
 /*
- * Some BIOSes claim they use minimum backlight at boot,
- * and this may bring dimming screen after boot
- */
-static bool use_bios_initial_backlight = 1;
-module_param(use_bios_initial_backlight, bool, 0644);
-
-/*
  * For Windows 8 systems: if set ture and the GPU driver has
  * registered a backlight interface, skip registering ACPI video's.
  */
···
 	return 0;
 }
 
-static int video_ignore_initial_backlight(const struct dmi_system_id *d)
-{
-	use_bios_initial_backlight = 0;
-	return 0;
-}
-
 static struct dmi_system_id video_dmi_table[] __initdata = {
 	/*
 	 * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121
···
 	 .matches = {
 		DMI_MATCH(DMI_BOARD_VENDOR, "Acer"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"),
-		},
-	},
-	{
-	 .callback = video_ignore_initial_backlight,
-	 .ident = "HP Folio 13-2000",
-	 .matches = {
-		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"),
-		},
-	},
-	{
-	 .callback = video_ignore_initial_backlight,
-	 .ident = "Fujitsu E753",
-	 .matches = {
-		DMI_MATCH(DMI_BOARD_VENDOR, "FUJITSU"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E753"),
-		},
-	},
-	{
-	 .callback = video_ignore_initial_backlight,
-	 .ident = "HP Pavilion dm4",
-	 .matches = {
-		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"),
-		},
-	},
-	{
-	 .callback = video_ignore_initial_backlight,
-	 .ident = "HP Pavilion g6 Notebook PC",
-	 .matches = {
-		 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
-		 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion g6 Notebook PC"),
-		},
-	},
-	{
-	 .callback = video_ignore_initial_backlight,
-	 .ident = "HP 1000 Notebook PC",
-	 .matches = {
-		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "HP 1000 Notebook PC"),
-		},
-	},
-	{
-	 .callback = video_ignore_initial_backlight,
-	 .ident = "HP Pavilion m4",
-	 .matches = {
-		DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
-		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"),
 		},
 	},
 	{}
···
 	if (!device->cap._BQC)
 		goto set_level;
 
-	if (use_bios_initial_backlight) {
-		level = acpi_video_bqc_value_to_level(device, level_old);
-		/*
-		 * On some buggy laptops, _BQC returns an uninitialized
-		 * value when invoked for the first time, i.e.
-		 * level_old is invalid (no matter whether it's a level
-		 * or an index). Set the backlight to max_level in this case.
-		 */
-		for (i = 2; i < br->count; i++)
-			if (level == br->levels[i])
-				break;
-		if (i == br->count || !level)
-			level = max_level;
-	}
+	level = acpi_video_bqc_value_to_level(device, level_old);
+	/*
+	 * On some buggy laptops, _BQC returns an uninitialized
+	 * value when invoked for the first time, i.e.
+	 * level_old is invalid (no matter whether it's a level
+	 * or an index). Set the backlight to max_level in this case.
+	 */
+	for (i = 2; i < br->count; i++)
+		if (level == br->levels[i])
+			break;
+	if (i == br->count || !level)
+		level = max_level;
 
 set_level:
 	result = acpi_video_device_lcd_set_level(device, level);

drivers/ata/libata-acpi.c

···
 	if (libata_noacpi || ap->flags & ATA_FLAG_ACPI_SATA || !host_handle)
 		return;
 
-	ACPI_HANDLE_SET(&ap->tdev, acpi_get_child(host_handle, ap->port_no));
+	acpi_preset_companion(&ap->tdev, host_handle, ap->port_no);
 
 	if (ata_acpi_gtm(ap, &ap->__acpi_init_gtm) == 0)
 		ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
···
 		parent_handle = port_handle;
 	}
 
-	ACPI_HANDLE_SET(&dev->tdev, acpi_get_child(parent_handle, adr));
+	acpi_preset_companion(&dev->tdev, parent_handle, adr);
 
 	register_hotplug_dock_device(ata_dev_acpi_handle(dev),
 				     &ata_acpi_dev_dock_ops, dev, NULL, NULL);

drivers/base/platform.c

···
 		goto err_alloc;
 
 	pdev->dev.parent = pdevinfo->parent;
-	ACPI_HANDLE_SET(&pdev->dev, pdevinfo->acpi_node.handle);
+	ACPI_COMPANION_SET(&pdev->dev, pdevinfo->acpi_node.companion);
 
 	if (pdevinfo->dma_mask) {
 		/*
···
 	ret = platform_device_add(pdev);
 	if (ret) {
 err:
-		ACPI_HANDLE_SET(&pdev->dev, NULL);
+		ACPI_COMPANION_SET(&pdev->dev, NULL);
 		kfree(pdev->dev.dma_mask);
 
 err_alloc:

drivers/base/power/main.c

···
 
 	device_unlock(dev);
 
+	if (error)
+		pm_runtime_put(dev);
+
 	return error;
 }
 

drivers/cpufreq/cpufreq_conservative.c

···
 
 		dbs_info->requested_freq += get_freq_target(cs_tuners, policy);
 
+		if (dbs_info->requested_freq > policy->max)
+			dbs_info->requested_freq = policy->max;
+
 		__cpufreq_driver_target(policy, dbs_info->requested_freq,
 			CPUFREQ_RELATION_H);
 		return;

drivers/cpufreq/cpufreq_governor.c

···
 					     dbs_data->cdata->gov_dbs_timer);
 		}
 
-		/*
-		 * conservative does not implement micro like ondemand
-		 * governor, thus we are bound to jiffes/HZ
-		 */
 		if (dbs_data->cdata->governor == GOV_CONSERVATIVE) {
 			cs_dbs_info->down_skip = 0;
 			cs_dbs_info->enable = 1;

drivers/cpufreq/omap-cpufreq.c

···
 
 static int omap_target(struct cpufreq_policy *policy, unsigned int index)
 {
+	int r, ret;
 	struct dev_pm_opp *opp;
 	unsigned long freq, volt = 0, volt_old = 0, tol = 0;
 	unsigned int old_freq, new_freq;

drivers/gpio/gpiolib.c

···
 #include <linux/acpi_gpio.h>
 #include <linux/idr.h>
 #include <linux/slab.h>
+#include <linux/acpi.h>
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/gpio.h>

drivers/gpu/drm/i915/intel_acpi.c

···
 	acpi_handle dhandle;
 	int ret;
 
-	dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+	dhandle = ACPI_HANDLE(&pdev->dev);
 	if (!dhandle)
 		return false;
 

drivers/gpu/drm/i915/intel_opregion.c

···
 	u32 temp;
 	int i = 0;
 
-	handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev);
+	handle = ACPI_HANDLE(&dev->pdev->dev);
 	if (!handle || acpi_bus_get_device(handle, &acpi_dev))
 		return;
 

drivers/gpu/drm/nouveau/core/subdev/mxm/base.c

···
 	acpi_handle handle;
 	int ret;
 
-	handle = DEVICE_ACPI_HANDLE(&device->pdev->dev);
+	handle = ACPI_HANDLE(&device->pdev->dev);
 	if (!handle)
 		return false;
 

drivers/gpu/drm/nouveau/nouveau_acpi.c

···
 	acpi_handle dhandle;
 	int retval = 0;
 
-	dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+	dhandle = ACPI_HANDLE(&pdev->dev);
 	if (!dhandle)
 		return false;
 
···
 	if (!nouveau_dsm_priv.dsm_detected && !nouveau_dsm_priv.optimus_detected)
 		return false;
 
-	dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+	dhandle = ACPI_HANDLE(&pdev->dev);
 	if (!dhandle)
 		return false;
 
···
 		return NULL;
 	}
 
-	handle = DEVICE_ACPI_HANDLE(&dev->pdev->dev);
+	handle = ACPI_HANDLE(&dev->pdev->dev);
 	if (!handle)
 		return NULL;
 

drivers/gpu/drm/radeon/radeon_acpi.c

···
 		return NOTIFY_DONE;
 
 	/* Check pending SBIOS requests */
-	handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
+	handle = ACPI_HANDLE(&rdev->pdev->dev);
 	count = radeon_atif_get_sbios_requests(handle, &req);
 
 	if (count <= 0)
···
 	struct radeon_atcs *atcs = &rdev->atcs;
 
 	/* Get the device handle */
-	handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
+	handle = ACPI_HANDLE(&rdev->pdev->dev);
 	if (!handle)
 		return -EINVAL;
 
···
 	u32 retry = 3;
 
 	/* Get the device handle */
-	handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
+	handle = ACPI_HANDLE(&rdev->pdev->dev);
 	if (!handle)
 		return -EINVAL;
 
···
 	int ret;
 
 	/* Get the device handle */
-	handle = DEVICE_ACPI_HANDLE(&rdev->pdev->dev);
+	handle = ACPI_HANDLE(&rdev->pdev->dev);
 
 	/* No need to proceed if we're sure that ATIF is not supported */
 	if (!ASIC_IS_AVIVO(rdev) || !rdev->bios || !handle)

drivers/gpu/drm/radeon/radeon_atpx_handler.c

···
  */
 #include <linux/vga_switcheroo.h>
 #include <linux/slab.h>
-#include <acpi/acpi.h>
-#include <acpi/acpi_bus.h>
+#include <linux/acpi.h>
 #include <linux/pci.h>
 
 #include "radeon_acpi.h"
···
 	acpi_handle dhandle, atpx_handle;
 	acpi_status status;
 
-	dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+	dhandle = ACPI_HANDLE(&pdev->dev);
 	if (!dhandle)
 		return false;
 
···
  */
 static int radeon_atpx_get_client_id(struct pci_dev *pdev)
 {
-	if (radeon_atpx_priv.dhandle == DEVICE_ACPI_HANDLE(&pdev->dev))
+	if (radeon_atpx_priv.dhandle == ACPI_HANDLE(&pdev->dev))
 		return VGA_SWITCHEROO_IGD;
 	else
 		return VGA_SWITCHEROO_DIS;

drivers/gpu/drm/radeon/radeon_bios.c

···
 		return false;
 
 	while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
-		dhandle = DEVICE_ACPI_HANDLE(&pdev->dev);
+		dhandle = ACPI_HANDLE(&pdev->dev);
 		if (!dhandle)
 			continue;
 

drivers/hid/i2c-hid/i2c-hid.c

···
 	hid->hid_get_raw_report = i2c_hid_get_raw_report;
 	hid->hid_output_raw_report = i2c_hid_output_raw_report;
 	hid->dev.parent = &client->dev;
-	ACPI_HANDLE_SET(&hid->dev, ACPI_HANDLE(&client->dev));
+	ACPI_COMPANION_SET(&hid->dev, ACPI_COMPANION(&client->dev));
 	hid->bus = BUS_I2C;
 	hid->version = le16_to_cpu(ihid->hdesc.bcdVersion);
 	hid->vendor = le16_to_cpu(ihid->hdesc.wVendorID);

drivers/i2c/i2c-core.c

···
 }
 EXPORT_SYMBOL_GPL(i2c_unlock_adapter);
 
+static void i2c_dev_set_name(struct i2c_adapter *adap,
+			     struct i2c_client *client)
+{
+	struct acpi_device *adev = ACPI_COMPANION(&client->dev);
+
+	if (adev) {
+		dev_set_name(&client->dev, "i2c-%s", acpi_dev_name(adev));
+		return;
+	}
+
+	/* For 10-bit clients, add an arbitrary offset to avoid collisions */
+	dev_set_name(&client->dev, "%d-%04x", i2c_adapter_id(adap),
+		     client->addr | ((client->flags & I2C_CLIENT_TEN)
+				     ? 0xa000 : 0));
+}
+
 /**
  * i2c_new_device - instantiate an i2c device
  * @adap: the adapter managing the device
···
 	client->dev.bus = &i2c_bus_type;
 	client->dev.type = &i2c_client_type;
 	client->dev.of_node = info->of_node;
-	ACPI_HANDLE_SET(&client->dev, info->acpi_node.handle);
+	ACPI_COMPANION_SET(&client->dev, info->acpi_node.companion);
 
-	/* For 10-bit clients, add an arbitrary offset to avoid collisions */
-	dev_set_name(&client->dev, "%d-%04x", i2c_adapter_id(adap),
-		     client->addr | ((client->flags & I2C_CLIENT_TEN)
-				     ? 0xa000 : 0));
+	i2c_dev_set_name(adap, client);
 	status = device_register(&client->dev);
 	if (status)
 		goto out_err;
···
 		return AE_OK;
 
 	memset(&info, 0, sizeof(info));
-	info.acpi_node.handle = handle;
+	info.acpi_node.companion = adev;
 	info.irq = -1;
 
 	INIT_LIST_HEAD(&resource_list);

drivers/ide/ide-acpi.c

···
  * Copyright (C) 2006 Hannes Reinecke
  */
 
+#include <linux/acpi.h>
 #include <linux/ata.h>
 #include <linux/delay.h>
 #include <linux/device.h>
···
 #include <linux/pci.h>
 #include <linux/dmi.h>
 #include <linux/module.h>
-
-#include <acpi/acpi_bus.h>
 
 #define REGS_PER_GTF		7
 
···
 
 	DEBPRINT("ENTER: pci %02x:%02x.%01x\n", bus, devnum, func);
 
-	dev_handle = DEVICE_ACPI_HANDLE(dev);
+	dev_handle = ACPI_HANDLE(dev);
 	if (!dev_handle) {
 		DEBPRINT("no acpi handle for device\n");
 		goto err;

drivers/idle/intel_idle.c

···
 /*
  * intel_idle.c - native hardware idle loop for modern Intel processors
  *
- * Copyright (c) 2010, Intel Corporation.
+ * Copyright (c) 2013, Intel Corporation.
  * Len Brown <[e-mail]>
  *
  * This program is free software; you can redistribute it and/or modify it
···
 	{
 		.enter = NULL }
 };
+static struct cpuidle_state avn_cstates[CPUIDLE_STATE_MAX] = {
+	{
+		.name = "C1-AVN",
+		.desc = "MWAIT 0x00",
+		.flags = MWAIT2flg(0x00) | CPUIDLE_FLAG_TIME_VALID,
+		.exit_latency = 2,
+		.target_residency = 2,
+		.enter = &intel_idle },
+	{
+		.name = "C6-AVN",
+		.desc = "MWAIT 0x51",
+		.flags = MWAIT2flg(0x58) | CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
+		.exit_latency = 15,
+		.target_residency = 45,
+		.enter = &intel_idle },
+};
 
 /**
  * intel_idle
···
 	.disable_promotion_to_c1e = true,
 };
 
+static const struct idle_cpu idle_cpu_avn = {
+	.state_table = avn_cstates,
+	.disable_promotion_to_c1e = true,
+};
+
 #define ICPU(model, cpu) \
 	{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
 
···
 	ICPU(0x3f, idle_cpu_hsw),
 	ICPU(0x45, idle_cpu_hsw),
 	ICPU(0x46, idle_cpu_hsw),
+	ICPU(0x4D, idle_cpu_avn),
 	{}
 };
 MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids);

drivers/mmc/core/sdio_bus.c

···
 	struct mmc_host *host = func->card->host;
 	u64 addr = (host->slotno << 16) | func->num;
 
-	ACPI_HANDLE_SET(&func->dev,
-			acpi_get_child(ACPI_HANDLE(host->parent), addr));
+	acpi_preset_companion(&func->dev, ACPI_HANDLE(host->parent), addr);
 }
 #else
 static inline void sdio_acpi_set_handle(struct sdio_func *func) {}

drivers/pci/hotplug/acpi_pcihp.c

···
 		string = (struct acpi_buffer){ ACPI_ALLOCATE_BUFFER, NULL };
 	}
 
-	handle = DEVICE_ACPI_HANDLE(&pdev->dev);
+	handle = ACPI_HANDLE(&pdev->dev);
 	if (!handle) {
 		/*
 		 * This hotplug controller was not listed in the ACPI name

drivers/pci/hotplug/acpiphp.h

···
 u8 acpiphp_get_adapter_status(struct acpiphp_slot *slot);
 
 /* variables */
-extern bool acpiphp_debug;
 extern bool acpiphp_disabled;
 
 #endif /* _ACPIPHP_H */

drivers/pci/hotplug/pciehp_acpi.c

···
 {
 	if (slot_detection_mode != PCIEHP_DETECT_ACPI)
 		return 0;
-	if (acpi_pci_detect_ejectable(DEVICE_ACPI_HANDLE(&dev->dev)))
+	if (acpi_pci_detect_ejectable(ACPI_HANDLE(&dev->dev)))
 		return 0;
 	return -ENODEV;
 }
···
 			dup_slot_id++;
 	}
 	list_add_tail(&slot->list, &dummy_slots);
-	handle = DEVICE_ACPI_HANDLE(&pdev->dev);
+	handle = ACPI_HANDLE(&pdev->dev);
 	if (!acpi_slot_detected && acpi_pci_detect_ejectable(handle))
 		acpi_slot_detected = 1;
 	return -ENODEV;         /* dummy driver always returns error */

drivers/pci/hotplug/sgi_hotplug.c

···
  * Work to add BIOS PROM support was completed by Mike Habeck.
  */
 
+#include <linux/acpi.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
···
 #include <asm/sn/sn_feature_sets.h>
 #include <asm/sn/sn_sal.h>
 #include <asm/sn/types.h>
-#include <linux/acpi.h>
 #include <asm/sn/acpi.h>
 
 #include "../pci.h"
···
 		acpi_handle rethandle;
 		acpi_status ret;
 
-		phandle = PCI_CONTROLLER(slot->pci_bus)->acpi_handle;
+		phandle = acpi_device_handle(PCI_CONTROLLER(slot->pci_bus)->companion);
 
 		if (acpi_bus_get_device(phandle, &pdevice)) {
 			dev_dbg(&slot->pci_bus->self->dev,
···
 
 	/* free the ACPI resources for the slot */
 	if (SN_ACPI_BASE_SUPPORT() &&
-            PCI_CONTROLLER(slot->pci_bus)->acpi_handle) {
+            PCI_CONTROLLER(slot->pci_bus)->companion) {
 		unsigned long long adr;
 		struct acpi_device *device;
 		acpi_handle phandle;
···
 		acpi_status ret;
 
 		/* Get the rootbus node pointer */
-		phandle = PCI_CONTROLLER(slot->pci_bus)->acpi_handle;
+		phandle = acpi_device_handle(PCI_CONTROLLER(slot->pci_bus)->companion);
 
 		acpi_scan_lock_acquire();
 		/*

drivers/pci/ioapic.c

···
 	char *type;
 	struct resource *res;
 
-	handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	handle = ACPI_HANDLE(&dev->dev);
 	if (!handle)
 		return -EINVAL;
 

drivers/pci/pci-acpi.c

···
 
 static bool acpi_pci_power_manageable(struct pci_dev *dev)
 {
-	acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	acpi_handle handle = ACPI_HANDLE(&dev->dev);
 
 	return handle ? acpi_bus_power_manageable(handle) : false;
 }
 
 static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 {
-	acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	acpi_handle handle = ACPI_HANDLE(&dev->dev);
 	static const u8 state_conv[] = {
 		[PCI_D0] = ACPI_STATE_D0,
 		[PCI_D1] = ACPI_STATE_D1,
···
 
 static bool acpi_pci_can_wakeup(struct pci_dev *dev)
 {
-	acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	acpi_handle handle = ACPI_HANDLE(&dev->dev);
 
 	return handle ? acpi_bus_can_wakeup(handle) : false;
 }

drivers/pci/pci-label.c

···
 	acpi_handle handle;
 	struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
 
-	handle = DEVICE_ACPI_HANDLE(dev);
+	handle = ACPI_HANDLE(dev);
 
 	if (!handle)
 		return FALSE;
···
 	acpi_handle handle;
 	int length;
 
-	handle = DEVICE_ACPI_HANDLE(dev);
+	handle = ACPI_HANDLE(dev);
 
 	if (!handle)
 		return -1;
···
 	acpi_handle handle;
 	int length;
 
-	handle = DEVICE_ACPI_HANDLE(dev);
+	handle = ACPI_HANDLE(dev);
 
 	if (!handle)
 		return -1;

drivers/platform/x86/apple-gmux.c

···
 
 	gmux_data->power_state = VGA_SWITCHEROO_ON;
 
-	gmux_data->dhandle = DEVICE_ACPI_HANDLE(&pnp->dev);
+	gmux_data->dhandle = ACPI_HANDLE(&pnp->dev);
 	if (!gmux_data->dhandle) {
 		pr_err("Cannot find acpi handle for pnp device %s\n",
 		       dev_name(&pnp->dev));

drivers/pnp/pnpacpi/core.c

···
 
 	pnp_dbg(&dev->dev, "set resources\n");
 
-	handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	handle = ACPI_HANDLE(&dev->dev);
 	if (!handle || acpi_bus_get_device(handle, &acpi_dev)) {
 		dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__);
 		return -ENODEV;
···
 
 	dev_dbg(&dev->dev, "disable resources\n");
 
-	handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	handle = ACPI_HANDLE(&dev->dev);
 	if (!handle || acpi_bus_get_device(handle, &acpi_dev)) {
 		dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__);
 		return 0;
···
 	struct acpi_device *acpi_dev;
 	acpi_handle handle;
 
-	handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	handle = ACPI_HANDLE(&dev->dev);
 	if (!handle || acpi_bus_get_device(handle, &acpi_dev)) {
 		dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__);
 		return false;
···
 	acpi_handle handle;
 	int error = 0;
 
-	handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	handle = ACPI_HANDLE(&dev->dev);
 	if (!handle || acpi_bus_get_device(handle, &acpi_dev)) {
 		dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__);
 		return 0;
···
 static int pnpacpi_resume(struct pnp_dev *dev)
 {
 	struct acpi_device *acpi_dev;
-	acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev);
+	acpi_handle handle = ACPI_HANDLE(&dev->dev);
 	int error = 0;
 
 	if (!handle || acpi_bus_get_device(handle, &acpi_dev)) {

drivers/spi/spi.c

···
 }
 EXPORT_SYMBOL_GPL(spi_alloc_device);
 
+static void spi_dev_set_name(struct spi_device *spi)
+{
+	struct acpi_device *adev = ACPI_COMPANION(&spi->dev);
+
+	if (adev) {
+		dev_set_name(&spi->dev, "spi-%s", acpi_dev_name(adev));
+		return;
+	}
+
+	dev_set_name(&spi->dev, "%s.%u", dev_name(&spi->master->dev),
+		     spi->chip_select);
+}
+
 /**
  * spi_add_device - Add spi_device allocated with spi_alloc_device
  * @spi: spi_device to register
···
 	}
 
 	/* Set the bus ID string */
-	dev_set_name(&spi->dev, "%s.%u", dev_name(&spi->master->dev),
-			spi->chip_select);
-
+	spi_dev_set_name(spi);
 
 	/* We need to make sure there's no other device with this
 	 * chipselect **BEFORE** we call setup(), else we'll trash
···
 		return AE_NO_MEMORY;
 	}
 
-	ACPI_HANDLE_SET(&spi->dev, handle);
+	ACPI_COMPANION_SET(&spi->dev, adev);
 	spi->irq = -1;
 
 	INIT_LIST_HEAD(&resource_list);

drivers/usb/core/hub.c

···
 	if (!hub)
 		return NULL;
 
-	return DEVICE_ACPI_HANDLE(&hub->ports[port1 - 1]->dev);
+	return ACPI_HANDLE(&hub->ports[port1 - 1]->dev);
 }
 #endif

drivers/usb/core/usb-acpi.c

···
 		}
 
 		/* root hub's parent is the usb hcd. */
-		parent_handle = DEVICE_ACPI_HANDLE(dev->parent);
+		parent_handle = ACPI_HANDLE(dev->parent);
 		*handle = acpi_get_child(parent_handle, udev->portnum);
 		if (!*handle)
 			return -ENODEV;
···
 
 			raw_port_num = usb_hcd_find_raw_port_number(hcd,
 				port_num);
-			*handle = acpi_get_child(DEVICE_ACPI_HANDLE(&udev->dev),
+			*handle = acpi_get_child(ACPI_HANDLE(&udev->dev),
 				raw_port_num);
 			if (!*handle)
 				return -ENODEV;

drivers/xen/pci.c

···
 			add.flags = XEN_PCI_DEV_EXTFN;
 
 #ifdef CONFIG_ACPI
-		handle = DEVICE_ACPI_HANDLE(&pci_dev->dev);
+		handle = ACPI_HANDLE(&pci_dev->dev);
 		if (!handle && pci_dev->bus->bridge)
-			handle = DEVICE_ACPI_HANDLE(pci_dev->bus->bridge);
+			handle = ACPI_HANDLE(pci_dev->bus->bridge);
 #ifdef CONFIG_PCI_IOV
 		if (!handle && pci_dev->is_virtfn)
-			handle = DEVICE_ACPI_HANDLE(physfn->bus->bridge);
+			handle = ACPI_HANDLE(physfn->bus->bridge);
 #endif
 		if (handle) {
 			acpi_status status;

include/acpi/acpi_bus.h

···
 {
 	return acpi_find_child(handle, addr, false);
 }
+void acpi_preset_companion(struct device *dev, acpi_handle parent, u64 addr);
 int acpi_is_root_bridge(acpi_handle);
 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
-#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)ACPI_HANDLE(dev))
 
 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
 int acpi_disable_wakeup_device_power(struct acpi_device *dev);

include/linux/acpi.h

···
 #include <acpi/acpi_numa.h>
 #include <asm/acpi.h>
 
+static inline acpi_handle acpi_device_handle(struct acpi_device *adev)
+{
+	return adev ? adev->handle : NULL;
+}
+
+#define ACPI_COMPANION(dev)		((dev)->acpi_node.companion)
+#define ACPI_COMPANION_SET(dev, adev)	ACPI_COMPANION(dev) = (adev)
+#define ACPI_HANDLE(dev)		acpi_device_handle(ACPI_COMPANION(dev))
+
+static inline const char *acpi_dev_name(struct acpi_device *adev)
+{
+	return dev_name(&adev->dev);
+}
+
 enum acpi_irq_model_id {
 	ACPI_IRQ_MODEL_PIC = 0,
 	ACPI_IRQ_MODEL_IOAPIC,
···
 #else	/* !CONFIG_ACPI */
 
 #define acpi_disabled 1
+
+#define ACPI_COMPANION(dev)		(NULL)
+#define ACPI_COMPANION_SET(dev, adev)	do { } while (0)
+#define ACPI_HANDLE(dev)		(NULL)
+
+static inline const char *acpi_dev_name(struct acpi_device *adev)
+{
+	return NULL;
+}
 
 static inline void acpi_early_init(void) { }
 

include/linux/device.h

···
 	unsigned long segment_boundary_mask;
 };
 
+struct acpi_device;
+
 struct acpi_dev_node {
 #ifdef CONFIG_ACPI
-	void	*handle;
+	struct acpi_device *companion;
 #endif
 };
 
···
 {
 	return container_of(kobj, struct device, kobj);
 }
-
-#ifdef CONFIG_ACPI
-#define ACPI_HANDLE(dev)	((dev)->acpi_node.handle)
-#define ACPI_HANDLE_SET(dev, _handle_)	(dev)->acpi_node.handle = (_handle_)
-#else
-#define ACPI_HANDLE(dev)	(NULL)
-#define ACPI_HANDLE_SET(dev, _handle_)	do { } while (0)
-#endif
 
 /* Get the wakeup routines, which depend on struct device */
 #include <linux/pm_wakeup.h>

include/linux/pci-acpi.h

···
 	while (!pci_is_root_bus(pbus))
 		pbus = pbus->parent;
 
-	return DEVICE_ACPI_HANDLE(pbus->bridge);
+	return ACPI_HANDLE(pbus->bridge);
 }
 
 static inline acpi_handle acpi_pci_get_bridge_handle(struct pci_bus *pbus)
···
 	else
 		dev = &pbus->self->dev;
 
-	return DEVICE_ACPI_HANDLE(dev);
+	return ACPI_HANDLE(dev);
 }
 
 void acpi_pci_add_bus(struct pci_bus *bus);

kernel/power/snapshot.c

···
 {
 	struct memory_bitmap *bm1, *bm2;
 
-	BUG_ON(!(forbidden_pages_map && free_pages_map));
+	if (WARN_ON(!(forbidden_pages_map && free_pages_map)))
+		return;
 
 	bm1 = forbidden_pages_map;
 	bm2 = free_pages_map;

kernel/power/user.c

···
 		data->swap = swsusp_resume_device ?
 			swap_type_of(swsusp_resume_device, 0, NULL) : -1;
 		data->mode = O_RDONLY;
+		data->free_bitmaps = false;
 		error = pm_notifier_call_chain(PM_HIBERNATION_PREPARE);
 		if (error)
 			pm_notifier_call_chain(PM_POST_HIBERNATION);

tools/power/x86/turbostat/turbostat.c

···
  * turbostat -- show CPU frequency and C-state residency
  * on modern Intel turbo-capable processors.
  *
- * Copyright (c) 2012 Intel Corporation.
+ * Copyright (c) 2013 Intel Corporation.
  * Len Brown <[e-mail]>
  *
  * This program is free software; you can redistribute it and/or modify it
···
 unsigned int do_nhm_cstates;
 unsigned int do_snb_cstates;
 unsigned int do_c8_c9_c10;
+unsigned int do_slm_cstates;
+unsigned int use_c1_residency_msr;
 unsigned int has_aperf;
 unsigned int has_epb;
 unsigned int units = 1000000000;	/* Ghz etc */
···
 #define RAPL_DRAM	(1 << 3)
 #define RAPL_PKG_PERF_STATUS	(1 << 4)
 #define RAPL_DRAM_PERF_STATUS	(1 << 5)
+#define RAPL_PKG_POWER_INFO	(1 << 6)
+#define RAPL_CORE_POLICY	(1 << 7)
 #define	TJMAX_DEFAULT	100
 
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
···
 	unsigned long long tsc;
 	unsigned long long aperf;
 	unsigned long long mperf;
-	unsigned long long c1;	/* derived */
+	unsigned long long c1;
 	unsigned long long extra_msr64;
 	unsigned long long extra_delta64;
 	unsigned long long extra_msr32;
···
 		outp += sprintf(outp, "           MSR 0x%03X", extra_msr_offset64);
 	if (do_nhm_cstates)
 		outp += sprintf(outp, "    %%c1");
-	if (do_nhm_cstates)
+	if (do_nhm_cstates && !do_slm_cstates)
 		outp += sprintf(outp, "    %%c3");
 	if (do_nhm_cstates)
 		outp += sprintf(outp, "    %%c6");
···
 
 	if (do_snb_cstates)
 		outp += sprintf(outp, "   %%pc2");
-	if (do_nhm_cstates)
+	if (do_nhm_cstates && !do_slm_cstates)
 		outp += sprintf(outp, "   %%pc3");
-	if (do_nhm_cstates)
+	if (do_nhm_cstates && !do_slm_cstates)
 		outp += sprintf(outp, "   %%pc6");
 	if (do_snb_cstates)
 		outp += sprintf(outp, "   %%pc7");
···
 	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
 		goto done;
 
-	if (do_nhm_cstates)
+	if (do_nhm_cstates && !do_slm_cstates)
 		outp += sprintf(outp, " %6.2f", 100.0 * c->c3/t->tsc);
 	if (do_nhm_cstates)
 		outp += sprintf(outp, " %6.2f", 100.0 * c->c6/t->tsc);
···
 
 	if (do_snb_cstates)
 		outp += sprintf(outp, " %6.2f", 100.0 * p->pc2/t->tsc);
-	if (do_nhm_cstates)
+	if (do_nhm_cstates && !do_slm_cstates)
 		outp += sprintf(outp, " %6.2f", 100.0 * p->pc3/t->tsc);
-	if (do_nhm_cstates)
+	if (do_nhm_cstates && !do_slm_cstates)
 		outp += sprintf(outp, " %6.2f", 100.0 * p->pc6/t->tsc);
 	if (do_snb_cstates)
 		outp += sprintf(outp, " %6.2f", 100.0 * p->pc7/t->tsc);
···
 	}
 
 
-	/*
-	 * As counter collection is not atomic,
-	 * it is possible for mperf's non-halted cycles + idle states
-	 * to exceed TSC's all cycles: show c1 = 0% in that case.
-	 */
-	if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
-		old->c1 = 0;
-	else {
-		/* normal case, derive c1 */
-		old->c1 = old->tsc - old->mperf - core_delta->c3
+	if (use_c1_residency_msr) {
+		/*
+		 * Some models have a dedicated C1 residency MSR,
+		 * which should be more accurate than the derivation below.
+		 */
+	} else {
+		/*
+		 * As counter collection is not atomic,
+		 * it is possible for mperf's non-halted cycles + idle states
+		 * to exceed TSC's all cycles: show c1 = 0% in that case.
+		 */
+		if ((old->mperf + core_delta->c3 + core_delta->c6 + core_delta->c7) > old->tsc)
+			old->c1 = 0;
+		else {
+			/* normal case, derive c1 */
+			old->c1 = old->tsc - old->mperf - core_delta->c3
 				- core_delta->c6 - core_delta->c7;
+		}
 	}
 
 	if (old->mperf == 0) {
···
 		if (get_msr(cpu, extra_msr_offset64, &t->extra_msr64))
 			return -5;
 
+	if (use_c1_residency_msr) {
+		if (get_msr(cpu, MSR_CORE_C1_RES, &t->c1))
+			return -6;
+	}
+
 	/* collect core counters only for 1st thread in core */
 	if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
 		return 0;
 
-	if (do_nhm_cstates) {
+	if (do_nhm_cstates && !do_slm_cstates) {
 		if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
 			return -6;
+	}
+
+	if (do_nhm_cstates) {
 		if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
 			return -7;
 	}
···
 	if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
 		return 0;
 
-	if (do_nhm_cstates) {
+	if (do_nhm_cstates && !do_slm_cstates) {
 		if (get_msr(cpu, MSR_PKG_C3_RESIDENCY, &p->pc3))
 			return -9;
 		if (get_msr(cpu, MSR_PKG_C6_RESIDENCY, &p->pc6))
···
 		ratio, bclk, ratio * bclk);
 
 	get_msr(0, MSR_IA32_POWER_CTL, &msr);
-	fprintf(stderr, "cpu0: MSR_IA32_POWER_CTL: 0x%08llx (C1E: %sabled)\n",
+	fprintf(stderr, "cpu0: MSR_IA32_POWER_CTL: 0x%08llx (C1E auto-promotion: %sabled)\n",
 		msr, msr & 0x2 ? "EN" : "DIS");
 
 	if (!do_ivt_turbo_ratio_limit)
···
 
 	switch(msr & 0x7) {
 	case 0:
-		fprintf(stderr, "pc0");
+		fprintf(stderr, do_slm_cstates ? "no pkg states" : "pc0");
 		break;
 	case 1:
-		fprintf(stderr, do_snb_cstates ? "pc2" : "pc0");
+		fprintf(stderr, do_slm_cstates ? "no pkg states" : do_snb_cstates ? "pc2" : "pc0");
 		break;
 	case 2:
-		fprintf(stderr, do_snb_cstates ? "pc6-noret" : "pc3");
+		fprintf(stderr, do_slm_cstates ? "invalid" : do_snb_cstates ? "pc6-noret" : "pc3");
 		break;
 	case 3:
-		fprintf(stderr, "pc6");
+		fprintf(stderr, do_slm_cstates ? "invalid" : "pc6");
 		break;
 	case 4:
-		fprintf(stderr, "pc7");
+		fprintf(stderr, do_slm_cstates ? "pc4" : "pc7");
 		break;
 	case 5:
-		fprintf(stderr, do_snb_cstates ? "pc7s" : "invalid");
+		fprintf(stderr, do_slm_cstates ? "invalid" : do_snb_cstates ? "pc7s" : "invalid");
+		break;
+	case 6:
+		fprintf(stderr, do_slm_cstates ? "pc6" : "invalid");
 		break;
 	case 7:
-		fprintf(stderr, "unlimited");
+		fprintf(stderr, do_slm_cstates ? "pc7" : "unlimited");
 		break;
 	default:
 		fprintf(stderr, "invalid");
···
 	case 0x3F:	/* HSW */
 	case 0x45:	/* HSW */
 	case 0x46:	/* HSW */
+	case 0x37:	/* BYT */
+	case 0x4D:	/* AVN */
 		return 1;
 	case 0x2E:	/* Nehalem-EX Xeon - Beckton */
 	case 0x2F:	/* Westmere-EX Xeon - Eagleton */
···
 #define	RAPL_POWER_GRANULARITY	0x7FFF	/* 15 bit power granularity */
 #define	RAPL_TIME_GRANULARITY	0x3F /* 6 bit time granularity */
 
+double get_tdp(model)
+{
+	unsigned long long msr;
+
+	if (do_rapl & RAPL_PKG_POWER_INFO)
+		if (!get_msr(0, MSR_PKG_POWER_INFO, &msr))
+			return ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;
+
+	switch (model) {
+	case 0x37:
+	case 0x4D:
+		return 30.0;
+	default:
+		return 135.0;
+	}
+}
+
+
 /*
  * rapl_probe()
  *
- * sets do_rapl
+ * sets do_rapl, rapl_power_units, rapl_energy_units, rapl_time_units
  */
 void rapl_probe(unsigned int family, unsigned int model)
 {
 	unsigned long long msr;
+	unsigned int time_unit;
 	double tdp;
 
 	if (!genuine_intel)
···
 	case 0x3F:	/* HSW */
 	case 0x45:	/* HSW */
 	case 0x46:	/* HSW */
-		do_rapl = RAPL_PKG | RAPL_CORES | RAPL_GFX;
+		do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_GFX | RAPL_PKG_POWER_INFO;
 		break;
 	case 0x2D:
 	case 0x3E:
-		do_rapl = RAPL_PKG | RAPL_CORES | RAPL_DRAM | RAPL_PKG_PERF_STATUS | RAPL_DRAM_PERF_STATUS;
+		do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_DRAM | RAPL_PKG_PERF_STATUS | RAPL_DRAM_PERF_STATUS | RAPL_PKG_POWER_INFO;
+		break;
+	case 0x37:	/* BYT */
+	case 0x4D:	/* AVN */
+		do_rapl = RAPL_PKG | RAPL_CORES ;
 		break;
 	default:
 		return;
···
 		return;
 
 	rapl_power_units = 1.0 / (1 << (msr & 0xF));
-	rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
-	rapl_time_units = 1.0 / (1 << (msr >> 16 & 0xF));
+	if (model == 0x37)
+		rapl_energy_units = 1.0 * (1 << (msr >> 8 & 0x1F)) / 1000000;
+	else
+		rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
 
-	/* get TDP to determine energy counter range */
-	if (get_msr(0, MSR_PKG_POWER_INFO, &msr))
-		return;
+	time_unit = msr >> 16 & 0xF;
+	if (time_unit == 0)
+		time_unit = 0xA;
 
-	tdp = ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;
+	rapl_time_units = 1.0 / (1 << (time_unit));
+
+	tdp = get_tdp(model);
 
 	rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;
-
 	if (verbose)
-		fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range\n", rapl_joule_counter_range);
+		fprintf(stderr, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp);
 
 	return;
 }
···
 {
 	unsigned long long msr;
 	int cpu;
-	double local_rapl_power_units, local_rapl_energy_units, local_rapl_time_units;
 
 	if (!do_rapl)
 		return 0;
···
 	if (get_msr(cpu, MSR_RAPL_POWER_UNIT, &msr))
 		return -1;
 
-	local_rapl_power_units = 1.0 / (1 << (msr & 0xF));
-	local_rapl_energy_units = 1.0 / (1 << (msr >> 8 & 0x1F));
-	local_rapl_time_units = 1.0 / (1 << (msr >> 16 & 0xF));
-
-	if (local_rapl_power_units != rapl_power_units)
-		fprintf(stderr, "cpu%d, ERROR: Power units mis-match\n", cpu);
-	if (local_rapl_energy_units != rapl_energy_units)
-		fprintf(stderr, "cpu%d, ERROR: Energy units mis-match\n", cpu);
-	if (local_rapl_time_units != rapl_time_units)
-		fprintf(stderr, "cpu%d, ERROR: Time units mis-match\n", cpu);
-
 	if (verbose) {
 		fprintf(stderr, "cpu%d: MSR_RAPL_POWER_UNIT: 0x%08llx "
 			"(%f Watts, %f Joules, %f sec.)\n", cpu, msr,
-			local_rapl_power_units, local_rapl_energy_units, local_rapl_time_units);
+			rapl_power_units, rapl_energy_units, rapl_time_units);
 	}
-	if (do_rapl & RAPL_PKG) {
+	if (do_rapl & RAPL_PKG_POWER_INFO) {
+
 		if (get_msr(cpu, MSR_PKG_POWER_INFO, &msr))
                 	return -5;
 
···
 			((msr >> 16) & RAPL_POWER_GRANULARITY) * rapl_power_units,
 			((msr >> 32) & RAPL_POWER_GRANULARITY) * rapl_power_units,
 			((msr >> 48) & RAPL_TIME_GRANULARITY) * rapl_time_units);
+
+	}
+	if (do_rapl & RAPL_PKG) {
 
 		if (get_msr(cpu, MSR_PKG_POWER_LIMIT, &msr))
 			return -9;
···
 
 		print_power_limit_msr(cpu, msr, "DRAM Limit");
 	}
-	if (do_rapl & RAPL_CORES) {
+	if (do_rapl & RAPL_CORE_POLICY) {
 		if (verbose) {
 			if (get_msr(cpu, MSR_PP0_POLICY, &msr))
 				return -7;
 
 			fprintf(stderr, "cpu%d: MSR_PP0_POLICY: %lld\n", cpu, msr & 0xF);
+		}
+	}
+	if (do_rapl & RAPL_CORES) {
+		if (verbose) {
 
 			if (get_msr(cpu, MSR_PP0_POWER_LIMIT, &msr))
 				return -9;
···
 }
 
 
+int is_slm(unsigned int family, unsigned int model)
+{
+	if (!genuine_intel)
+		return 0;
+	switch (model) {
+	case 0x37:	/* BYT */
+	case 0x4D:	/* AVN */
+		return 1;
+	}
+	return 0;
+}
+
+#define SLM_BCLK_FREQS 5
+double slm_freq_table[SLM_BCLK_FREQS] = { 83.3, 100.0, 133.3, 116.7, 80.0};
+
+double slm_bclk(void)
+{
+	unsigned long long msr = 3;
+	unsigned int i;
+	double freq;
+
+	if (get_msr(0, MSR_FSB_FREQ, &msr))
+		fprintf(stderr, "SLM BCLK: unknown\n");
+
+	i = msr & 0xf;
+	if (i >= SLM_BCLK_FREQS) {
+		fprintf(stderr, "SLM BCLK[%d] invalid\n", i);
+		msr = 3;
+	}
+	freq = slm_freq_table[i];
+
+	fprintf(stderr, "SLM BCLK: %.1f Mhz\n", freq);
+
+	return freq;
+}
+
 double discover_bclk(unsigned int family, unsigned int model)
 {
 	if (is_snb(family, model))
 		return 100.00;
+	else if (is_slm(family, model))
+		return slm_bclk();
 	else
 		return 133.33;
 }
···
 		fprintf(stderr, "cpu%d: MSR_IA32_TEMPERATURE_TARGET: 0x%08llx (%d C)\n",
 			cpu, msr, target_c_local);
 
-	if (target_c_local < 85 || target_c_local > 120)
+	if (target_c_local < 85 || target_c_local > 127)
 		goto guess;
 
 	tcc_activation_temp = target_c_local;
···
 	do_smi = do_nhm_cstates;
 	do_snb_cstates = is_snb(family, model);
 	do_c8_c9_c10 = has_c8_c9_c10(family, model);
+	do_slm_cstates = is_slm(family, model);
 	bclk = discover_bclk(family, model);
 
 	do_nehalem_turbo_ratio_limit = has_nehalem_turbo_ratio_limit(family, model);
···
 	cmdline(argc, argv);
 
 	if (verbose)
-		fprintf(stderr, "turbostat v3.4 April 17, 2013"
+		fprintf(stderr, "turbostat v3.5 April 26, 2013"
 			" - Len Brown <[e-mail]>\n");
 
 	turbostat_init();