Merge tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI updates from Rafael J Wysocki:

 - ARM big.LITTLE cpufreq driver from Viresh Kumar.

 - exynos5440 cpufreq driver from Amit Daniel Kachhap.

 - cpufreq core cleanup and code consolidation from Viresh Kumar and
   Stratos Karafotis.

 - cpufreq scalability improvement from Nathan Zimmer.

 - AMD "frequency sensitivity feedback" powersave bias for the ondemand
   cpufreq governor from Jacob Shin.

 - cpuidle code consolidation and cleanups from Daniel Lezcano.

 - ARM OMAP cpuidle fixes from Santosh Shilimkar and Daniel Lezcano.

 - ACPICA fixes and other improvements from Bob Moore, Jung-uk Kim, Lv
   Zheng, Yinghai Lu, Tang Chen, Colin Ian King, and Linn Crosetto.

 - ACPI core updates related to hotplug from Toshi Kani, Paul Bolle,
   Yasuaki Ishimatsu, and Rafael J Wysocki.

 - Intel Lynxpoint LPSS (Low-Power Subsystem) support improvements from
   Rafael J Wysocki and Andy Shevchenko.

* tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (192 commits)
  cpufreq: Revert incorrect commit 5800043
  cpufreq: MAINTAINERS: Add co-maintainer
  cpuidle: add maintainer entry
  ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points
  ARM: s3c64xx: cpuidle: use init/exit common routine
  cpufreq: pxa2xx: initialize variables
  ACPI: video: correct acpi_video_bus_add error processing
  SH: cpuidle: use init/exit common routine
  ARM: S5pv210: compiling issue, ARM_S5PV210_CPUFREQ needs CONFIG_CPU_FREQ_TABLE=y
  ACPI: Fix wrong parameter passed to memblock_reserve
  cpuidle: fix comment format
  pnp: use %*phC to dump small buffers
  isapnp: remove debug leftovers
  ARM: imx: cpuidle: use init/exit common routine
  ARM: davinci: cpuidle: use init/exit common routine
  ARM: kirkwood: cpuidle: use init/exit common routine
  ARM: calxeda: cpuidle: use init/exit common routine
  ARM: tegra: cpuidle: use init/exit common routine for tegra3
  ARM: tegra: cpuidle: use init/exit common routine for tegra2
  ARM: OMAP4: cpuidle: use init/exit common routine
  ...

66 files changed, 3440 insertions, 1779 deletions

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 4bf68c8d4797..100bd724f648 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -298,14 +298,6 @@ config ACPI_DEBUG
           Documentation/kernel-parameters.txt to control the type and
           amount of debug output.
 
-config ACPI_DEBUG_FUNC_TRACE
-        bool "Additionally enable ACPI function tracing"
-        default n
-        depends on ACPI_DEBUG
-        help
-          ACPI Debug Statements slow down ACPI processing. Function trace
-          is about half of the penalty and is rarely useful.
-
 config ACPI_PCI_SLOT
         bool "PCI slot detection driver"
         depends on SYSFS
@@ -334,7 +326,7 @@ config X86_PM_TIMER
 
 config ACPI_CONTAINER
         bool "Container and Module Devices"
-        default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
+        default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU)
         help
           This driver supports ACPI Container and Module devices (IDs
           ACPI0004, PNP0A05, and PNP0A06).
@@ -345,9 +337,8 @@ config ACPI_CONTAINER
           the module will be called container.
 
 config ACPI_HOTPLUG_MEMORY
-        tristate "Memory Hotplug"
+        bool "Memory Hotplug"
         depends on MEMORY_HOTPLUG
-        default n
         help
           This driver supports ACPI memory hotplug.  The driver
           fields notifications on ACPI memory devices (PNP0C80),
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 474fcfeba66c..ecb743bf05a5 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -39,6 +39,7 @@ acpi-y				+= ec.o
 acpi-$(CONFIG_ACPI_DOCK)        += dock.o
 acpi-y                          += pci_root.o pci_link.o pci_irq.o
 acpi-y                          += csrt.o
+acpi-$(CONFIG_X86_INTEL_LPSS)   += acpi_lpss.o
 acpi-y                          += acpi_platform.o
 acpi-y                          += power.o
 acpi-y                          += event.o
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
new file mode 100644
index 000000000000..b1c95422ce74
--- /dev/null
+++ b/drivers/acpi/acpi_lpss.c
@@ -0,0 +1,292 @@
+/*
+ * ACPI support for Intel Lynxpoint LPSS.
+ *
+ * Copyright (C) 2013, Intel Corporation
+ * Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
+ *          Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/clk-lpss.h>
+#include <linux/pm_runtime.h>
+
+#include "internal.h"
+
+ACPI_MODULE_NAME("acpi_lpss");
+
+#define LPSS_CLK_SIZE   0x04
+#define LPSS_LTR_SIZE   0x18
+
+/* Offsets relative to LPSS_PRIVATE_OFFSET */
+#define LPSS_GENERAL                    0x08
+#define LPSS_GENERAL_LTR_MODE_SW        BIT(2)
+#define LPSS_SW_LTR                     0x10
+#define LPSS_AUTO_LTR                   0x14
+
+struct lpss_device_desc {
+        bool clk_required;
+        const char *clk_parent;
+        bool ltr_required;
+        unsigned int prv_offset;
+};
+
+struct lpss_private_data {
+        void __iomem *mmio_base;
+        resource_size_t mmio_size;
+        struct clk *clk;
+        const struct lpss_device_desc *dev_desc;
+};
+
+static struct lpss_device_desc lpt_dev_desc = {
+        .clk_required = true,
+        .clk_parent = "lpss_clk",
+        .prv_offset = 0x800,
+        .ltr_required = true,
+};
+
+static struct lpss_device_desc lpt_sdio_dev_desc = {
+        .prv_offset = 0x1000,
+        .ltr_required = true,
+};
+
+static const struct acpi_device_id acpi_lpss_device_ids[] = {
+        /* Lynxpoint LPSS devices */
+        { "INT33C0", (unsigned long)&lpt_dev_desc },
+        { "INT33C1", (unsigned long)&lpt_dev_desc },
+        { "INT33C2", (unsigned long)&lpt_dev_desc },
+        { "INT33C3", (unsigned long)&lpt_dev_desc },
+        { "INT33C4", (unsigned long)&lpt_dev_desc },
+        { "INT33C5", (unsigned long)&lpt_dev_desc },
+        { "INT33C6", (unsigned long)&lpt_sdio_dev_desc },
+        { "INT33C7", },
+
+        { }
+};
+
+static int is_memory(struct acpi_resource *res, void *not_used)
+{
+        struct resource r;
+        return !acpi_dev_resource_memory(res, &r);
+}
+
+/* LPSS main clock device. */
+static struct platform_device *lpss_clk_dev;
+
+static inline void lpt_register_clock_device(void)
+{
+        lpss_clk_dev = platform_device_register_simple("clk-lpt", -1, NULL, 0);
+}
+
+static int register_device_clock(struct acpi_device *adev,
+                                 struct lpss_private_data *pdata)
+{
+        const struct lpss_device_desc *dev_desc = pdata->dev_desc;
+
+        if (!lpss_clk_dev)
+                lpt_register_clock_device();
+
+        if (!dev_desc->clk_parent || !pdata->mmio_base
+            || pdata->mmio_size < dev_desc->prv_offset + LPSS_CLK_SIZE)
+                return -ENODATA;
+
+        pdata->clk = clk_register_gate(NULL, dev_name(&adev->dev),
+                                       dev_desc->clk_parent, 0,
+                                       pdata->mmio_base + dev_desc->prv_offset,
+                                       0, 0, NULL);
+        if (IS_ERR(pdata->clk))
+                return PTR_ERR(pdata->clk);
+
+        clk_register_clkdev(pdata->clk, NULL, dev_name(&adev->dev));
+        return 0;
+}
+
+static int acpi_lpss_create_device(struct acpi_device *adev,
+                                   const struct acpi_device_id *id)
+{
+        struct lpss_device_desc *dev_desc;
+        struct lpss_private_data *pdata;
+        struct resource_list_entry *rentry;
+        struct list_head resource_list;
+        int ret;
+
+        dev_desc = (struct lpss_device_desc *)id->driver_data;
+        if (!dev_desc)
+                return acpi_create_platform_device(adev, id);
+
+        pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+        if (!pdata)
+                return -ENOMEM;
+
+        INIT_LIST_HEAD(&resource_list);
+        ret = acpi_dev_get_resources(adev, &resource_list, is_memory, NULL);
+        if (ret < 0)
+                goto err_out;
+
+        list_for_each_entry(rentry, &resource_list, node)
+                if (resource_type(&rentry->res) == IORESOURCE_MEM) {
+                        pdata->mmio_size = resource_size(&rentry->res);
+                        pdata->mmio_base = ioremap(rentry->res.start,
+                                                   pdata->mmio_size);
+                        pdata->dev_desc = dev_desc;
+                        break;
+                }
+
+        acpi_dev_free_resource_list(&resource_list);
+
+        if (dev_desc->clk_required) {
+                ret = register_device_clock(adev, pdata);
+                if (ret) {
+                        /*
+                         * Skip the device, but don't terminate the namespace
+                         * scan.
+                         */
+                        kfree(pdata);
+                        return 0;
+                }
+        }
+
+        adev->driver_data = pdata;
+        ret = acpi_create_platform_device(adev, id);
+        if (ret > 0)
+                return ret;
+
+        adev->driver_data = NULL;
+
+ err_out:
+        kfree(pdata);
+        return ret;
+}
+
+static int lpss_reg_read(struct device *dev, unsigned int reg, u32 *val)
+{
+        struct acpi_device *adev;
+        struct lpss_private_data *pdata;
+        unsigned long flags;
+        int ret;
+
+        ret = acpi_bus_get_device(ACPI_HANDLE(dev), &adev);
+        if (WARN_ON(ret))
+                return ret;
+
+        spin_lock_irqsave(&dev->power.lock, flags);
+        if (pm_runtime_suspended(dev)) {
+                ret = -EAGAIN;
+                goto out;
+        }
+        pdata = acpi_driver_data(adev);
+        if (WARN_ON(!pdata || !pdata->mmio_base)) {
+                ret = -ENODEV;
+                goto out;
+        }
+        *val = readl(pdata->mmio_base + pdata->dev_desc->prv_offset + reg);
+
+ out:
+        spin_unlock_irqrestore(&dev->power.lock, flags);
+        return ret;
+}
+
+static ssize_t lpss_ltr_show(struct device *dev, struct device_attribute *attr,
+                             char *buf)
+{
+        u32 ltr_value = 0;
+        unsigned int reg;
+        int ret;
+
+        reg = strcmp(attr->attr.name, "auto_ltr") ? LPSS_SW_LTR : LPSS_AUTO_LTR;
+        ret = lpss_reg_read(dev, reg, &ltr_value);
+        if (ret)
+                return ret;
+
+        return snprintf(buf, PAGE_SIZE, "%08x\n", ltr_value);
+}
+
+static ssize_t lpss_ltr_mode_show(struct device *dev,
+                                  struct device_attribute *attr, char *buf)
+{
+        u32 ltr_mode = 0;
+        char *outstr;
+        int ret;
+
+        ret = lpss_reg_read(dev, LPSS_GENERAL, &ltr_mode);
+        if (ret)
+                return ret;
+
+        outstr = (ltr_mode & LPSS_GENERAL_LTR_MODE_SW) ? "sw" : "auto";
+        return sprintf(buf, "%s\n", outstr);
+}
+
+static DEVICE_ATTR(auto_ltr, S_IRUSR, lpss_ltr_show, NULL);
+static DEVICE_ATTR(sw_ltr, S_IRUSR, lpss_ltr_show, NULL);
+static DEVICE_ATTR(ltr_mode, S_IRUSR, lpss_ltr_mode_show, NULL);
+
+static struct attribute *lpss_attrs[] = {
+        &dev_attr_auto_ltr.attr,
+        &dev_attr_sw_ltr.attr,
+        &dev_attr_ltr_mode.attr,
+        NULL,
+};
+
+static struct attribute_group lpss_attr_group = {
+        .attrs = lpss_attrs,
+        .name = "lpss_ltr",
+};
+
+static int acpi_lpss_platform_notify(struct notifier_block *nb,
+                                     unsigned long action, void *data)
+{
+        struct platform_device *pdev = to_platform_device(data);
+        struct lpss_private_data *pdata;
+        struct acpi_device *adev;
+        const struct acpi_device_id *id;
+        int ret = 0;
+
+        id = acpi_match_device(acpi_lpss_device_ids, &pdev->dev);
+        if (!id || !id->driver_data)
+                return 0;
+
+        if (acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev))
+                return 0;
+
+        pdata = acpi_driver_data(adev);
+        if (!pdata || !pdata->mmio_base || !pdata->dev_desc->ltr_required)
+                return 0;
+
+        if (pdata->mmio_size < pdata->dev_desc->prv_offset + LPSS_LTR_SIZE) {
+                dev_err(&pdev->dev, "MMIO size insufficient to access LTR\n");
+                return 0;
+        }
+
+        if (action == BUS_NOTIFY_ADD_DEVICE)
+                ret = sysfs_create_group(&pdev->dev.kobj, &lpss_attr_group);
+        else if (action == BUS_NOTIFY_DEL_DEVICE)
+                sysfs_remove_group(&pdev->dev.kobj, &lpss_attr_group);
+
+        return ret;
+}
+
+static struct notifier_block acpi_lpss_nb = {
+        .notifier_call = acpi_lpss_platform_notify,
+};
+
+static struct acpi_scan_handler lpss_handler = {
+        .ids = acpi_lpss_device_ids,
+        .attach = acpi_lpss_create_device,
+};
+
+void __init acpi_lpss_init(void)
+{
+        if (!lpt_clk_init()) {
+                bus_register_notifier(&platform_bus_type, &acpi_lpss_nb);
+                acpi_scan_add_handler(&lpss_handler);
+        }
+}
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index da1f82b445e0..5e6301e94920 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -1,5 +1,7 @@
 /*
- * Copyright (C) 2004 Intel Corporation <naveen.b.s@intel.com>
+ * Copyright (C) 2004, 2013 Intel Corporation
+ * Author: Naveen B S <naveen.b.s@intel.com>
+ * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
  *
  * All rights reserved.
  *
@@ -25,14 +27,10 @@
  * ranges.
  */
 
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/memory_hotplug.h>
-#include <linux/slab.h>
 #include <linux/acpi.h>
-#include <acpi/acpi_drivers.h>
+#include <linux/memory_hotplug.h>
+
+#include "internal.h"
 
 #define ACPI_MEMORY_DEVICE_CLASS                "memory"
 #define ACPI_MEMORY_DEVICE_HID                  "PNP0C80"
@@ -44,32 +42,28 @@
 #define         PREFIX          "ACPI:memory_hp:"
 
 ACPI_MODULE_NAME("acpi_memhotplug");
-MODULE_AUTHOR("Naveen B S <naveen.b.s@intel.com>");
-MODULE_DESCRIPTION("Hotplug Mem Driver");
-MODULE_LICENSE("GPL");
 
 /* Memory Device States */
 #define MEMORY_INVALID_STATE    0
 #define MEMORY_POWER_ON_STATE   1
 #define MEMORY_POWER_OFF_STATE  2
 
-static int acpi_memory_device_add(struct acpi_device *device);
-static int acpi_memory_device_remove(struct acpi_device *device);
+static int acpi_memory_device_add(struct acpi_device *device,
+                                  const struct acpi_device_id *not_used);
+static void acpi_memory_device_remove(struct acpi_device *device);
 
 static const struct acpi_device_id memory_device_ids[] = {
         {ACPI_MEMORY_DEVICE_HID, 0},
         {"", 0},
 };
-MODULE_DEVICE_TABLE(acpi, memory_device_ids);
 
-static struct acpi_driver acpi_memory_device_driver = {
-        .name = "acpi_memhotplug",
-        .class = ACPI_MEMORY_DEVICE_CLASS,
+static struct acpi_scan_handler memory_device_handler = {
         .ids = memory_device_ids,
-        .ops = {
-                .add = acpi_memory_device_add,
-                .remove = acpi_memory_device_remove,
-                },
+        .attach = acpi_memory_device_add,
+        .detach = acpi_memory_device_remove,
+        .hotplug = {
+                .enabled = true,
+        },
 };
 
 struct acpi_memory_info {
@@ -79,7 +73,6 @@ struct acpi_memory_info {
         unsigned short caching; /* memory cache attribute */
         unsigned short write_protect;   /* memory read/write attribute */
         unsigned int enabled:1;
-        unsigned int failed:1;
 };
 
 struct acpi_memory_device {
@@ -153,48 +146,6 @@ acpi_memory_get_device_resources(struct acpi_memory_device *mem_device)
         return 0;
 }
 
-static int acpi_memory_get_device(acpi_handle handle,
-                                  struct acpi_memory_device **mem_device)
-{
-        struct acpi_device *device = NULL;
-        int result = 0;
-
-        acpi_scan_lock_acquire();
-
-        acpi_bus_get_device(handle, &device);
-        if (device)
-                goto end;
-
-        /*
-         * Now add the notified device.  This creates the acpi_device
-         * and invokes .add function
-         */
-        result = acpi_bus_scan(handle);
-        if (result) {
-                acpi_handle_warn(handle, "ACPI namespace scan failed\n");
-                result = -EINVAL;
-                goto out;
-        }
-        result = acpi_bus_get_device(handle, &device);
-        if (result) {
-                acpi_handle_warn(handle, "Missing device object\n");
-                result = -EINVAL;
-                goto out;
-        }
-
- end:
-        *mem_device = acpi_driver_data(device);
-        if (!(*mem_device)) {
-                dev_err(&device->dev, "driver data not found\n");
-                result = -ENODEV;
-                goto out;
-        }
-
- out:
-        acpi_scan_lock_release();
-        return result;
-}
-
 static int acpi_memory_check_device(struct acpi_memory_device *mem_device)
 {
         unsigned long long current_status;
@@ -249,13 +200,11 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
                  * returns -EEXIST. If add_memory() returns the other error, it
                  * means that this memory block is not used by the kernel.
                  */
-                if (result && result != -EEXIST) {
-                        info->failed = 1;
+                if (result && result != -EEXIST)
                         continue;
-                }
 
-                if (!result)
-                        info->enabled = 1;
+                info->enabled = 1;
+
                 /*
                  * Add num_enable even if add_memory() returns -EEXIST, so the
                  * device is bound to this driver.
@@ -286,16 +235,8 @@ static int acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
         nid = acpi_get_node(mem_device->device->handle);
 
         list_for_each_entry_safe(info, n, &mem_device->res_list, list) {
-                if (info->failed)
-                        /* The kernel does not use this memory block */
-                        continue;
-
                 if (!info->enabled)
-                        /*
-                         * The kernel uses this memory block, but it may be not
-                         * managed by us.
-                         */
-                        return -EBUSY;
+                        continue;
 
                 if (nid < 0)
                         nid = memory_add_physaddr_to_nid(info->start_addr);
@@ -310,95 +251,21 @@ static int acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
         return result;
 }
 
-static void acpi_memory_device_notify(acpi_handle handle, u32 event, void *data)
-{
-        struct acpi_memory_device *mem_device;
-        struct acpi_device *device;
-        struct acpi_eject_event *ej_event = NULL;
-        u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
-        acpi_status status;
-
-        switch (event) {
-        case ACPI_NOTIFY_BUS_CHECK:
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                  "\nReceived BUS CHECK notification for device\n"));
-                /* Fall Through */
-        case ACPI_NOTIFY_DEVICE_CHECK:
-                if (event == ACPI_NOTIFY_DEVICE_CHECK)
-                        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                          "\nReceived DEVICE CHECK notification for device\n"));
-                if (acpi_memory_get_device(handle, &mem_device)) {
-                        acpi_handle_err(handle, "Cannot find driver data\n");
-                        break;
-                }
-
-                ost_code = ACPI_OST_SC_SUCCESS;
-                break;
-
-        case ACPI_NOTIFY_EJECT_REQUEST:
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                  "\nReceived EJECT REQUEST notification for device\n"));
-
-                status = AE_ERROR;
-                acpi_scan_lock_acquire();
-
-                if (acpi_bus_get_device(handle, &device)) {
-                        acpi_handle_err(handle, "Device doesn't exist\n");
-                        goto unlock;
-                }
-                mem_device = acpi_driver_data(device);
-                if (!mem_device) {
-                        acpi_handle_err(handle, "Driver Data is NULL\n");
-                        goto unlock;
-                }
-
-                ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
-                if (!ej_event) {
-                        pr_err(PREFIX "No memory, dropping EJECT\n");
-                        goto unlock;
-                }
-
-                get_device(&device->dev);
-                ej_event->device = device;
-                ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
-                /* The eject is carried out asynchronously. */
-                status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
-                                                 ej_event);
-                if (ACPI_FAILURE(status)) {
-                        put_device(&device->dev);
-                        kfree(ej_event);
-                }
-
- unlock:
-                acpi_scan_lock_release();
-                if (ACPI_SUCCESS(status))
-                        return;
-        default:
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                  "Unsupported event [0x%x]\n", event));
-
-                /* non-hotplug event; possibly handled by other handler */
-                return;
-        }
-
-        /* Inform firmware that the hotplug operation has completed */
-        (void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL);
-}
-
 static void acpi_memory_device_free(struct acpi_memory_device *mem_device)
 {
         if (!mem_device)
                 return;
 
         acpi_memory_free_device_resources(mem_device);
+        mem_device->device->driver_data = NULL;
         kfree(mem_device);
 }
 
-static int acpi_memory_device_add(struct acpi_device *device)
+static int acpi_memory_device_add(struct acpi_device *device,
+                                  const struct acpi_device_id *not_used)
 {
+        struct acpi_memory_device *mem_device;
         int result;
-        struct acpi_memory_device *mem_device = NULL;
-
 
         if (!device)
                 return -EINVAL;
@@ -423,147 +290,36 @@ static int acpi_memory_device_add(struct acpi_device *device)
         /* Set the device state */
         mem_device->state = MEMORY_POWER_ON_STATE;
 
-        pr_debug("%s\n", acpi_device_name(device));
+        result = acpi_memory_check_device(mem_device);
+        if (result) {
+                acpi_memory_device_free(mem_device);
+                return 0;
+        }
 
-        if (!acpi_memory_check_device(mem_device)) {
-                /* call add_memory func */
-                result = acpi_memory_enable_device(mem_device);
-                if (result) {
-                        dev_err(&device->dev,
-                                "Error in acpi_memory_enable_device\n");
-                        acpi_memory_device_free(mem_device);
-                }
+        result = acpi_memory_enable_device(mem_device);
+        if (result) {
+                dev_err(&device->dev, "acpi_memory_enable_device() error\n");
+                acpi_memory_device_free(mem_device);
+                return -ENODEV;
         }
-        return result;
+
+        dev_dbg(&device->dev, "Memory device configured by ACPI\n");
+        return 1;
 }
 
-static int acpi_memory_device_remove(struct acpi_device *device)
+static void acpi_memory_device_remove(struct acpi_device *device)
 {
-        struct acpi_memory_device *mem_device = NULL;
-        int result;
+        struct acpi_memory_device *mem_device;
 
         if (!device || !acpi_driver_data(device))
-                return -EINVAL;
+                return;
 
         mem_device = acpi_driver_data(device);
-
-        result = acpi_memory_remove_memory(mem_device);
-        if (result)
-                return result;
-
+        acpi_memory_remove_memory(mem_device);
         acpi_memory_device_free(mem_device);
-
-        return 0;
-}
-
-/*
- * Helper function to check for memory device
- */
-static acpi_status is_memory_device(acpi_handle handle)
-{
-        char *hardware_id;
-        acpi_status status;
-        struct acpi_device_info *info;
-
-        status = acpi_get_object_info(handle, &info);
-        if (ACPI_FAILURE(status))
-                return status;
-
-        if (!(info->valid & ACPI_VALID_HID)) {
-                kfree(info);
-                return AE_ERROR;
-        }
-
-        hardware_id = info->hardware_id.string;
-        if ((hardware_id == NULL) ||
-            (strcmp(hardware_id, ACPI_MEMORY_DEVICE_HID)))
-                status = AE_ERROR;
-
-        kfree(info);
-        return status;
-}
-
-static acpi_status
-acpi_memory_register_notify_handler(acpi_handle handle,
-                                    u32 level, void *ctxt, void **retv)
-{
-        acpi_status status;
-
-
-        status = is_memory_device(handle);
-        if (ACPI_FAILURE(status))
-                return AE_OK;   /* continue */
-
-        status = acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
-                                             acpi_memory_device_notify, NULL);
-        /* continue */
-        return AE_OK;
-}
-
-static acpi_status
-acpi_memory_deregister_notify_handler(acpi_handle handle,
-                                      u32 level, void *ctxt, void **retv)
-{
-        acpi_status status;
-
-
-        status = is_memory_device(handle);
-        if (ACPI_FAILURE(status))
-                return AE_OK;   /* continue */
-
-        status = acpi_remove_notify_handler(handle,
-                                            ACPI_SYSTEM_NOTIFY,
-                                            acpi_memory_device_notify);
-
-        return AE_OK;   /* continue */
-}
-
-static int __init acpi_memory_device_init(void)
-{
-        int result;
-        acpi_status status;
-
-
-        result = acpi_bus_register_driver(&acpi_memory_device_driver);
-
-        if (result < 0)
-                return -ENODEV;
-
-        status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-                                     ACPI_UINT32_MAX,
-                                     acpi_memory_register_notify_handler, NULL,
-                                     NULL, NULL);
-
-        if (ACPI_FAILURE(status)) {
-                ACPI_EXCEPTION((AE_INFO, status, "walk_namespace failed"));
-                acpi_bus_unregister_driver(&acpi_memory_device_driver);
-                return -ENODEV;
-        }
-
-        return 0;
 }
 
-static void __exit acpi_memory_device_exit(void)
+void __init acpi_memory_hotplug_init(void)
 {
-        acpi_status status;
-
-
-        /*
-         * Adding this to un-install notification handlers for all the device
-         * handles.
-         */
-        status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
-                                     ACPI_UINT32_MAX,
-                                     acpi_memory_deregister_notify_handler, NULL,
-                                     NULL, NULL);
-
-        if (ACPI_FAILURE(status))
-                ACPI_EXCEPTION((AE_INFO, status, "walk_namespace failed"));
-
-        acpi_bus_unregister_driver(&acpi_memory_device_driver);
-
-        return;
+        acpi_scan_add_handler_with_hotplug(&memory_device_handler, "memory");
 }
-
-module_init(acpi_memory_device_init);
-module_exit(acpi_memory_device_exit);
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c
index 31de1043eea0..27bb6a91de5f 100644
--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -236,7 +236,7 @@ static int create_power_saving_task(void)
         ps_tsks[ps_tsk_num] = kthread_run(power_saving_thread,
                 (void *)(unsigned long)ps_tsk_num,
                 "acpi_pad/%d", ps_tsk_num);
-        rc = IS_ERR(ps_tsks[ps_tsk_num]) ? PTR_ERR(ps_tsks[ps_tsk_num]) : 0;
+        rc = PTR_RET(ps_tsks[ps_tsk_num]);
         if (!rc)
                 ps_tsk_num++;
         else
diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c
index 26fce4b8a632..fafec5ddf17f 100644
--- a/drivers/acpi/acpi_platform.c
+++ b/drivers/acpi/acpi_platform.c
@@ -22,9 +22,6 @@
 
 ACPI_MODULE_NAME("platform");
 
-/* Flags for acpi_create_platform_device */
-#define ACPI_PLATFORM_CLK       BIT(0)
-
 /*
  * The following ACPI IDs are known to be suitable for representing as
  * platform devices.
@@ -33,33 +30,9 @@ static const struct acpi_device_id acpi_platform_device_ids[] = {
 
         { "PNP0D40" },
 
-        /* Haswell LPSS devices */
-        { "INT33C0", ACPI_PLATFORM_CLK },
-        { "INT33C1", ACPI_PLATFORM_CLK },
-        { "INT33C2", ACPI_PLATFORM_CLK },
-        { "INT33C3", ACPI_PLATFORM_CLK },
-        { "INT33C4", ACPI_PLATFORM_CLK },
-        { "INT33C5", ACPI_PLATFORM_CLK },
-        { "INT33C6", ACPI_PLATFORM_CLK },
-        { "INT33C7", ACPI_PLATFORM_CLK },
-
         { }
 };
 
-static int acpi_create_platform_clks(struct acpi_device *adev)
-{
-        static struct platform_device *pdev;
-
-        /* Create Lynxpoint LPSS clocks */
-        if (!pdev && !strncmp(acpi_device_hid(adev), "INT33C", 6)) {
-                pdev = platform_device_register_simple("clk-lpt", -1, NULL, 0);
-                if (IS_ERR(pdev))
-                        return PTR_ERR(pdev);
-        }
-
-        return 0;
-}
-
 /**
  * acpi_create_platform_device - Create platform device for ACPI device node
  * @adev: ACPI device node to create a platform device for.
@@ -71,10 +44,9 @@ static int acpi_create_platform_clks(struct acpi_device *adev)
  *
  * Name of the platform device will be the same as @adev's.
  */
-static int acpi_create_platform_device(struct acpi_device *adev,
-                                       const struct acpi_device_id *id)
+int acpi_create_platform_device(struct acpi_device *adev,
+                                const struct acpi_device_id *id)
 {
-        unsigned long flags = id->driver_data;
         struct platform_device *pdev = NULL;
         struct acpi_device *acpi_parent;
         struct platform_device_info pdevinfo;
@@ -83,14 +55,6 @@ static int acpi_create_platform_device(struct acpi_device *adev,
         struct resource *resources;
         int count;
 
-        if (flags & ACPI_PLATFORM_CLK) {
-                int ret = acpi_create_platform_clks(adev);
-                if (ret) {
-                        dev_err(&adev->dev, "failed to create clocks\n");
-                        return ret;
-                }
-        }
-
         /* If the ACPI node already has a physical device attached, skip it. */
         if (adev->physical_node_count)
                 return 0;
diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile
index a1b9bf5085a2..7ddf29eca9f5 100644
--- a/drivers/acpi/acpica/Makefile
+++ b/drivers/acpi/acpica/Makefile
@@ -83,6 +83,7 @@ acpi-$(ACPI_FUTURE_USAGE) += hwtimer.o
 acpi-y +=               \
         nsaccess.o      \
         nsalloc.o       \
+        nsconvert.o     \
         nsdump.o        \
         nseval.o        \
         nsinit.o        \
@@ -160,6 +161,7 @@ acpi-y +=		\
         utobject.o      \
         utosi.o         \
         utownerid.o     \
+        utpredef.o      \
         utresrc.o       \
         utstate.o       \
         utstring.o      \
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index ecb49927b817..07160928ca25 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -224,6 +224,7 @@ ACPI_EXTERN u8 acpi_gbl_global_lock_pending;
  */
 ACPI_EXTERN acpi_spinlock acpi_gbl_gpe_lock;    /* For GPE data structs and registers */
 ACPI_EXTERN acpi_spinlock acpi_gbl_hardware_lock;       /* For ACPI H/W except GPE registers */
+ACPI_EXTERN acpi_spinlock acpi_gbl_reference_count_lock;
 
 /* Mutex for _OSI support */
 
@@ -413,10 +414,12 @@ ACPI_EXTERN u8 acpi_gbl_db_output_flags;
 
 #ifdef ACPI_DISASSEMBLER
 
-u8 ACPI_INIT_GLOBAL(acpi_gbl_ignore_noop_operator, FALSE);
+ACPI_EXTERN u8 ACPI_INIT_GLOBAL(acpi_gbl_ignore_noop_operator, FALSE);
 
 ACPI_EXTERN u8 acpi_gbl_db_opt_disasm;
 ACPI_EXTERN u8 acpi_gbl_db_opt_verbose;
+ACPI_EXTERN u8 acpi_gbl_num_external_methods;
+ACPI_EXTERN u32 acpi_gbl_resolved_external_methods;
 ACPI_EXTERN struct acpi_external_list *acpi_gbl_external_list;
 ACPI_EXTERN struct acpi_external_file *acpi_gbl_external_file_list;
 #endif
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 805f419086ab..d5bfbd331bfd 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -294,6 +294,8 @@ acpi_status(*acpi_internal_method) (struct acpi_walk_state * walk_state);
 #define ACPI_BTYPE_OBJECTS_AND_REFS     0x0001FFFF      /* ARG or LOCAL */
 #define ACPI_BTYPE_ALL_OBJECTS          0x0000FFFF
 
+#pragma pack(1)
+
 /*
  * Information structure for ACPI predefined names.
  * Each entry in the table contains the following items:
@@ -304,7 +306,7 @@ acpi_status(*acpi_internal_method) (struct acpi_walk_state * walk_state);
  */
 struct acpi_name_info {
         char name[ACPI_NAME_SIZE];
-        u8 param_count;
+        u16 argument_list;
         u8 expected_btypes;
 };
 
@@ -327,7 +329,7 @@ struct acpi_package_info {
         u8 count1;
         u8 object_type2;
         u8 count2;
-        u8 reserved;
+        u16 reserved;
 };
 
 /* Used for ACPI_PTYPE2_FIXED */
@@ -336,6 +338,7 @@ struct acpi_package_info2 {
         u8 type;
         u8 count;
         u8 object_type[4];
+        u8 reserved;
 };
 
 /* Used for ACPI_PTYPE1_OPTION */
@@ -345,7 +348,7 @@ struct acpi_package_info3 {
         u8 count;
         u8 object_type[2];
         u8 tail_object_type;
-        u8 reserved;
+        u16 reserved;
 };
 
 union acpi_predefined_info {
@@ -355,6 +358,10 @@ union acpi_predefined_info {
         struct acpi_package_info3 ret_info3;
 };
 
+/* Reset to default packing */
+
+#pragma pack()
+
 /* Data block used during object validation */
 
 struct acpi_predefined_data {
@@ -363,6 +370,7 @@ struct acpi_predefined_data {
         union acpi_operand_object *parent_package;
         struct acpi_namespace_node *node;
         u32 flags;
+        u32 return_btype;
         u8 node_flags;
 };
 
@@ -371,6 +379,20 @@ struct acpi_predefined_data {
 #define ACPI_OBJECT_REPAIRED    1
 #define ACPI_OBJECT_WRAPPED     2
 
+/* Return object auto-repair info */
+
+typedef acpi_status(*acpi_object_converter) (union acpi_operand_object
+                                             *original_object,
+                                             union acpi_operand_object
+                                             **converted_object);
+
+struct acpi_simple_repair_info {
+        char name[ACPI_NAME_SIZE];
+        u32 unexpected_btypes;
+        u32 package_index;
+        acpi_object_converter object_converter;
+};
+
 /*
  * Bitmapped return value types
  * Note: the actual data types must be contiguous, a loop in nspredef.c
@@ -1037,6 +1059,7 @@ struct acpi_external_list {
         u16 length;
         u8 type;
         u8 flags;
+        u8 resolved;
 };
 
 /* Values for Flags field above */
diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h
index ed7943b9044f..53666bd9193d 100644
--- a/drivers/acpi/acpica/acmacros.h
+++ b/drivers/acpi/acpica/acmacros.h
@@ -322,10 +322,12 @@
  * where a pointer to an object of type union acpi_operand_object can also
  * appear. This macro is used to distinguish them.
  *
- * The "Descriptor" field is the first field in both structures.
+ * The "DescriptorType" field is the second field in both structures.
  */
+#define ACPI_GET_DESCRIPTOR_PTR(d)      (((union acpi_descriptor *)(void *)(d))->common.common_pointer)
+#define ACPI_SET_DESCRIPTOR_PTR(d, p)   (((union acpi_descriptor *)(void *)(d))->common.common_pointer = (p))
 #define ACPI_GET_DESCRIPTOR_TYPE(d)     (((union acpi_descriptor *)(void *)(d))->common.descriptor_type)
-#define ACPI_SET_DESCRIPTOR_TYPE(d, t)  (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = t)
+#define ACPI_SET_DESCRIPTOR_TYPE(d, t)  (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = (t))
 
 /*
  * Macros for the master AML opcode table
diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h
index 02cd5482ff8b..d2e491876bc0 100644
--- a/drivers/acpi/acpica/acnamesp.h
+++ b/drivers/acpi/acpica/acnamesp.h
@@ -167,6 +167,29 @@ void acpi_ns_delete_children(struct acpi_namespace_node *parent);
 int acpi_ns_compare_names(char *name1, char *name2);
 
 /*
+ * nsconvert - Dynamic object conversion routines
+ */
+acpi_status
+acpi_ns_convert_to_integer(union acpi_operand_object *original_object,
+                           union acpi_operand_object **return_object);
+
+acpi_status
+acpi_ns_convert_to_string(union acpi_operand_object *original_object,
+                          union acpi_operand_object **return_object);
+
+acpi_status
+acpi_ns_convert_to_buffer(union acpi_operand_object *original_object,
+                          union acpi_operand_object **return_object);
+
+acpi_status
+acpi_ns_convert_to_unicode(union acpi_operand_object *original_object,
+                           union acpi_operand_object **return_object);
+
+acpi_status
+acpi_ns_convert_to_resource(union acpi_operand_object *original_object,
+                            union acpi_operand_object **return_object);
+
+/*
  * nsdump - Namespace dump/print utilities
  */
 #ifdef  ACPI_FUTURE_USAGE
@@ -208,10 +231,6 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
                                acpi_status return_status,
                                union acpi_operand_object **return_object);
 
-const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
-                                                                    acpi_namespace_node
-                                                                    *node);
-
 void
 acpi_ns_check_parameter_count(char *pathname,
                               struct acpi_namespace_node *node,
@@ -289,7 +308,7 @@ acpi_ns_get_attached_data(struct acpi_namespace_node *node,
  * predefined methods/objects
  */
 acpi_status
-acpi_ns_repair_object(struct acpi_predefined_data *data,
+acpi_ns_simple_repair(struct acpi_predefined_data *data,
                       u32 expected_btypes,
                       u32 package_index,
                       union acpi_operand_object **return_object_ptr);
diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h
index 752cc40cdc1e..b22b70944fd6 100644
--- a/drivers/acpi/acpica/acpredef.h
+++ b/drivers/acpi/acpica/acpredef.h
@@ -56,7 +56,7 @@
  *      object type
  *      count
  *
- * ACPI_PTYPE1_VAR: Variable-length length:
+ * ACPI_PTYPE1_VAR: Variable-length length. Zero-length package is allowed:
  *      object type (Int/Buf/Ref)
  *
  * ACPI_PTYPE1_OPTION: Package has some required and some optional elements
@@ -66,14 +66,16 @@
  * 2) PTYPE2 packages contain a Variable-length number of sub-packages. Each
  *    of the different types describe the contents of each of the sub-packages.
  *
- * ACPI_PTYPE2: Each subpackage contains 1 or 2 object types:
+ * ACPI_PTYPE2: Each subpackage contains 1 or 2 object types. Zero-length
+ *      parent package is allowed:
  *      object type
  *      count
  *      object type
  *      count
  *      (Used for _ALR,_MLS,_PSS,_TRT,_TSS)
  *
- * ACPI_PTYPE2_COUNT: Each subpackage has a count as first element:
+ * ACPI_PTYPE2_COUNT: Each subpackage has a count as first element.
+ *      Zero-length parent package is allowed:
  *      object type
  *      (Used for _CSD,_PSD,_TSD)
  *
@@ -84,17 +86,19 @@
  *      count
  *      (Used for _CST)
  *
- * ACPI_PTYPE2_FIXED: Each subpackage is of Fixed-length
+ * ACPI_PTYPE2_FIXED: Each subpackage is of Fixed-length. Zero-length
+ *      parent package is allowed.
  *      (Used for _PRT)
  *
- * ACPI_PTYPE2_MIN: Each subpackage has a Variable-length but minimum length
+ * ACPI_PTYPE2_MIN: Each subpackage has a Variable-length but minimum length.
+ *      Zero-length parent package is allowed:
  *      (Used for _HPX)
  *
  * ACPI_PTYPE2_REV_FIXED: Revision at start, each subpackage is Fixed-length
  *      (Used for _ART, _FPS)
  *
  * ACPI_PTYPE2_FIX_VAR: Each subpackage consists of some fixed-length elements
- *      followed by an optional element
+ *      followed by an optional element. Zero-length parent package is allowed.
  *      object type
  *      count
  *      object type
@@ -116,8 +120,47 @@ enum acpi_return_package_types {
         ACPI_PTYPE2_FIX_VAR = 10
 };
 
+/* Support macros for users of the predefined info table */
+
+#define METHOD_PREDEF_ARGS_MAX          4
+#define METHOD_ARG_BIT_WIDTH            3
+#define METHOD_ARG_MASK                 0x0007
+#define ARG_COUNT_IS_MINIMUM            0x8000
+#define METHOD_MAX_ARG_TYPE             ACPI_TYPE_PACKAGE
+
+#define METHOD_GET_COUNT(arg_list)      (arg_list & METHOD_ARG_MASK)
+#define METHOD_GET_NEXT_ARG(arg_list)   (arg_list >> METHOD_ARG_BIT_WIDTH)
+
+/* Macros used to build the predefined info table */
+
+#define METHOD_0ARGS                    0
+#define METHOD_1ARGS(a1)                (1 | (a1 << 3))
+#define METHOD_2ARGS(a1,a2)             (2 | (a1 << 3) | (a2 << 6))
+#define METHOD_3ARGS(a1,a2,a3)          (3 | (a1 << 3) | (a2 << 6) | (a3 << 9))
+#define METHOD_4ARGS(a1,a2,a3,a4)       (4 | (a1 << 3) | (a2 << 6) | (a3 << 9) | (a4 << 12))
+
+#define METHOD_RETURNS(type)            (type)
+#define METHOD_NO_RETURN_VALUE          0
+
+#define PACKAGE_INFO(a,b,c,d,e,f)       {{{(a),(b),(c),(d)}, ((((u16)(f)) << 8) | (e)), 0}}
+
+/* Support macros for the resource descriptor info table */
+
+#define WIDTH_1                         0x0001
+#define WIDTH_2                         0x0002
+#define WIDTH_3                         0x0004
+#define WIDTH_8                         0x0008
+#define WIDTH_16                        0x0010
+#define WIDTH_32                        0x0020
+#define WIDTH_64                        0x0040
+#define VARIABLE_DATA                   0x0080
+#define NUM_RESOURCE_WIDTHS             8
+
+#define WIDTH_ADDRESS                   WIDTH_16 | WIDTH_32 | WIDTH_64
+
 #ifdef ACPI_CREATE_PREDEFINED_TABLE
-/*
+/******************************************************************************
+ *
  * Predefined method/object information table.
  *
  * These are the names that can actually be evaluated via acpi_evaluate_object.
@@ -125,23 +168,24 @@ enum acpi_return_package_types {
  *
  *      1) Predefined/Reserved names that are never evaluated via
  *         acpi_evaluate_object:
- *          _Lxx and _Exx GPE methods
- *          _Qxx EC methods
- *          _T_x compiler temporary variables
+ *              _Lxx and _Exx GPE methods
+ *              _Qxx EC methods
+ *              _T_x compiler temporary variables
+ *              _Wxx wake events
  *
  *      2) Predefined names that never actually exist within the AML code:
- *          Predefined resource descriptor field names
+ *              Predefined resource descriptor field names
  *
  *      3) Predefined names that are implemented within ACPICA:
- *          _OSI
- *
- *      4) Some predefined names that are not documented within the ACPI spec.
- *          _WDG, _WED
+ *              _OSI
  *
  * The main entries in the table each contain the following items:
  *
  * name                 - The ACPI reserved name
- * param_count          - Number of arguments to the method
+ * argument_list        - Contains (in 16 bits), the number of required
+ *                        arguments to the method (3 bits), and a 3-bit type
+ *                        field for each argument (up to 4 arguments). The
+ *                        METHOD_?ARGS macros generate the correct packed data.
  * expected_btypes      - Allowed type(s) for the return value.
  *                        0 means that no return value is expected.
  *
@@ -151,256 +195,511 @@ enum acpi_return_package_types {
  * overall size of the stored data.
  *
  * Note: The additional braces are intended to promote portability.
- */
-static const union acpi_predefined_info predefined_names[] = {
-        {{"_AC0", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC1", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC2", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC3", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC4", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC5", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC6", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC7", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC8", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AC9", 0, ACPI_RTYPE_INTEGER}},
-        {{"_ADR", 0, ACPI_RTYPE_INTEGER}},
-        {{"_AEI", 0, ACPI_RTYPE_BUFFER}},
-        {{"_AL0", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL1", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL2", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL3", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL4", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL5", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL6", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL7", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL8", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_AL9", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_ALC", 0, ACPI_RTYPE_INTEGER}},
-        {{"_ALI", 0, ACPI_RTYPE_INTEGER}},
-        {{"_ALP", 0, ACPI_RTYPE_INTEGER}},
-        {{"_ALR", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each 2 (Ints) */
-                          {{{ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 2,0}, 0,0}},
-
-        {{"_ALT", 0, ACPI_RTYPE_INTEGER}},
-        {{"_ART", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (1 Int(rev), n Pkg (2 Ref/11 Int) */
-        {{{ACPI_PTYPE2_REV_FIXED, ACPI_RTYPE_REFERENCE, 2, ACPI_RTYPE_INTEGER},
-          11, 0}},
-
-        {{"_BBN", 0, ACPI_RTYPE_INTEGER}},
-        {{"_BCL", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Ints) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0,0}, 0,0}},
-
-        {{"_BCM", 1, 0}},
-        {{"_BCT", 1, ACPI_RTYPE_INTEGER}},
-        {{"_BDN", 0, ACPI_RTYPE_INTEGER}},
-        {{"_BFS", 1, 0}},
-        {{"_BIF", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (9 Int),(4 Str) */
-        {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 9, ACPI_RTYPE_STRING}, 4, 0}},
-
-        {{"_BIX", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (16 Int),(4 Str) */
-        {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 16, ACPI_RTYPE_STRING}, 4,
-          0}},
-
-        {{"_BLT", 3, 0}},
-        {{"_BMA", 1, ACPI_RTYPE_INTEGER}},
-        {{"_BMC", 1, 0}},
-        {{"_BMD", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (5 Int) */
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 5,0}, 0,0}},
-
-        {{"_BMS", 1, ACPI_RTYPE_INTEGER}},
-        {{"_BQC", 0, ACPI_RTYPE_INTEGER}},
-        {{"_BST", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (4 Int) */
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4,0}, 0,0}},
-
-        {{"_BTM", 1, ACPI_RTYPE_INTEGER}},
-        {{"_BTP", 1, 0}},
-        {{"_CBA", 0, ACPI_RTYPE_INTEGER}}, /* See PCI firmware spec 3.0 */
-        {{"_CDM", 0, ACPI_RTYPE_INTEGER}},
-        {{"_CID", 0, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_PACKAGE}}, /* Variable-length (Ints/Strs) */
-        {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING, 0, 0}, 0,
-          0}},
-
-        {{"_CLS", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (3 Int) */
-        {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 3, 0}, 0, 0}},
-
-        {{"_CPC", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (Ints/Bufs) */
-        {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER | ACPI_RTYPE_BUFFER, 0, 0}, 0,
-          0}},
-
-        {{"_CRS", 0, ACPI_RTYPE_BUFFER}},
-        {{"_CRT", 0, ACPI_RTYPE_INTEGER}},
-        {{"_CSD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (1 Int(n), n-1 Int) */
-                          {{{ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER, 0,0}, 0,0}},
-
-        {{"_CST", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (1 Int(n), n Pkg (1 Buf/3 Int) */
-        {{{ACPI_PTYPE2_PKG_COUNT, ACPI_RTYPE_BUFFER, 1, ACPI_RTYPE_INTEGER}, 3,
-          0}},
-
-        {{"_CWS", 1, ACPI_RTYPE_INTEGER}},
-        {{"_DCK", 1, ACPI_RTYPE_INTEGER}},
-        {{"_DCS", 0, ACPI_RTYPE_INTEGER}},
-        {{"_DDC", 1, ACPI_RTYPE_INTEGER | ACPI_RTYPE_BUFFER}},
-        {{"_DDN", 0, ACPI_RTYPE_STRING}},
-        {{"_DEP", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (Refs) */
-        {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
-
-        {{"_DGS", 0, ACPI_RTYPE_INTEGER}},
-        {{"_DIS", 0, 0}},
-
-        {{"_DLM", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (Pkgs) each (1 Ref, 0/1 Optional Buf/Ref) */
-        {{{ACPI_PTYPE2_FIX_VAR, ACPI_RTYPE_REFERENCE, 1,
-           ACPI_RTYPE_REFERENCE | ACPI_RTYPE_BUFFER}, 0, 0}},
-
-        {{"_DMA", 0, ACPI_RTYPE_BUFFER}},
-        {{"_DOD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Ints) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0,0}, 0,0}},
-
-        {{"_DOS", 1, 0}},
-        {{"_DSM", 4, ACPI_RTYPE_ALL}},     /* Must return a type, but it can be of any type */
-        {{"_DSS", 1, 0}},
-        {{"_DSW", 3, 0}},
-        {{"_DTI", 1, 0}},
-        {{"_EC_", 0, ACPI_RTYPE_INTEGER}},
-        {{"_EDL", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs)*/
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_EJ0", 1, 0}},
-        {{"_EJ1", 1, 0}},
-        {{"_EJ2", 1, 0}},
-        {{"_EJ3", 1, 0}},
-        {{"_EJ4", 1, 0}},
-        {{"_EJD", 0, ACPI_RTYPE_STRING}},
-        {{"_EVT", 1, 0}},
-        {{"_FDE", 0, ACPI_RTYPE_BUFFER}},
-        {{"_FDI", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (16 Int) */
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 16,0}, 0,0}},
-
-        {{"_FDM", 1, 0}},
-        {{"_FIF", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (4 Int) */
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0}, 0, 0}},
-
-        {{"_FIX", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Ints) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0,0}, 0,0}},
-
-        {{"_FPS", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (1 Int(rev), n Pkg (5 Int) */
-        {{{ACPI_PTYPE2_REV_FIXED, ACPI_RTYPE_INTEGER, 5, 0}, 0, 0}},
-
-        {{"_FSL", 1, 0}},
-        {{"_FST", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (3 Int) */
-        {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 3, 0}, 0, 0}},
-
-        {{"_GAI", 0, ACPI_RTYPE_INTEGER}},
-        {{"_GCP", 0, ACPI_RTYPE_INTEGER}},
-        {{"_GHL", 0, ACPI_RTYPE_INTEGER}},
-        {{"_GLK", 0, ACPI_RTYPE_INTEGER}},
-        {{"_GPD", 0, ACPI_RTYPE_INTEGER}},
-        {{"_GPE", 0, ACPI_RTYPE_INTEGER}}, /* _GPE method, not _GPE scope */
-        {{"_GRT", 0, ACPI_RTYPE_BUFFER}},
-        {{"_GSB", 0, ACPI_RTYPE_INTEGER}},
-        {{"_GTF", 0, ACPI_RTYPE_BUFFER}},
-        {{"_GTM", 0, ACPI_RTYPE_BUFFER}},
-        {{"_GTS", 1, 0}},
-        {{"_GWS", 1, ACPI_RTYPE_INTEGER}},
-        {{"_HID", 0, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING}},
-        {{"_HOT", 0, ACPI_RTYPE_INTEGER}},
-        {{"_HPP", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (4 Int) */
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4,0}, 0,0}},
+ *
+ * Note2: Table is used by the kernel-resident subsystem, the iASL compiler,
+ * and the acpi_help utility.
+ *
+ * TBD: _PRT - currently ignore reversed entries. Attempt to fix in nsrepair.
+ * Possibly fixing package elements like _BIF, etc.
+ *
+ *****************************************************************************/
+
+const union acpi_predefined_info acpi_gbl_predefined_methods[] = {
+        {{"_AC0", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC1", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC2", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC3", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC4", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC5", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC6", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC7", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC8", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AC9", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_ADR", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_AEI", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_AL0", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL1", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL2", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL3", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL4", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL5", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL6", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL7", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL8", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_AL9", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_ALC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_ALI", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_ALP", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_ALR", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each 2 (Ints) */
+        PACKAGE_INFO(ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 2, 0, 0, 0),
+
+        {{"_ALT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_ART", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (1 Int(rev), n Pkg (2 Ref/11 Int) */
+        PACKAGE_INFO(ACPI_PTYPE2_REV_FIXED, ACPI_RTYPE_REFERENCE, 2,
+                     ACPI_RTYPE_INTEGER, 11, 0),
+
+        {{"_BBN", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_BCL", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Ints) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0, 0, 0, 0),
+
+        {{"_BCM", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_BCT", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_BDN", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_BFS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_BIF", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (9 Int),(4 Str) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 9,
+                     ACPI_RTYPE_STRING, 4, 0),
+
+        {{"_BIX", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (16 Int),(4 Str) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 16,
+                     ACPI_RTYPE_STRING, 4, 0),
+
+        {{"_BLT",
+          METHOD_3ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_BMA", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_BMC", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_BMD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (5 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 5, 0, 0, 0),
+
+        {{"_BMS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_BQC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_BST", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (4 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0),
+
+        {{"_BTM", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_BTP", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_CBA", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}}, /* See PCI firmware spec 3.0 */
+
+        {{"_CDM", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_CID", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_PACKAGE)}},        /* Variable-length (Ints/Strs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING, 0,
+                     0, 0, 0),
+
+        {{"_CLS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (3 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 3, 0, 0, 0),
+
+        {{"_CPC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Ints/Bufs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER | ACPI_RTYPE_BUFFER, 0,
+                     0, 0, 0),
+
+        {{"_CRS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_CRT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_CSD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (1 Int(n), n-1 Int) */
+        PACKAGE_INFO(ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER, 0, 0, 0, 0),
+
+        {{"_CST", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (1 Int(n), n Pkg (1 Buf/3 Int) */
+        PACKAGE_INFO(ACPI_PTYPE2_PKG_COUNT, ACPI_RTYPE_BUFFER, 1,
+                     ACPI_RTYPE_INTEGER, 3, 0),
+
+        {{"_CWS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_DCK", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_DCS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_DDC", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER | ACPI_RTYPE_BUFFER)}},
+
+        {{"_DDN", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_STRING)}},
+
+        {{"_DEP", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_DGS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_DIS", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_DLM", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each (1 Ref, 0/1 Optional Buf/Ref) */
+        PACKAGE_INFO(ACPI_PTYPE2_FIX_VAR, ACPI_RTYPE_REFERENCE, 1,
+                     ACPI_RTYPE_REFERENCE | ACPI_RTYPE_BUFFER, 0, 0),
+
+        {{"_DMA", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_DOD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Ints) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0, 0, 0, 0),
+
+        {{"_DOS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_DSM",
+          METHOD_4ARGS(ACPI_TYPE_BUFFER, ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER,
+                       ACPI_TYPE_PACKAGE),
+          METHOD_RETURNS(ACPI_RTYPE_ALL)}},     /* Must return a value, but it can be of any type */
+
+        {{"_DSS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_DSW",
+          METHOD_3ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_DTI", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_EC_", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_EDL", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_EJ0", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_EJ1", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_EJ2", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_EJ3", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_EJ4", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_EJD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_STRING)}},
+
+        {{"_ERR",
+          METHOD_3ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_STRING, ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}}, /* Internal use only, used by ACPICA test suites */
+
+        {{"_EVT", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_FDE", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_FDI", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (16 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 16, 0, 0, 0),
+
+        {{"_FDM", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_FIF", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (4 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0),
+
+        {{"_FIX", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Ints) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 0, 0, 0, 0),
+
+        {{"_FPS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (1 Int(rev), n Pkg (5 Int) */
+        PACKAGE_INFO(ACPI_PTYPE2_REV_FIXED, ACPI_RTYPE_INTEGER, 5, 0, 0, 0),
+
+        {{"_FSL", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_FST", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (3 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 3, 0, 0, 0),
+
+        {{"_GAI", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_GCP", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_GHL", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_GLK", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_GPD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_GPE", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}}, /* _GPE method, not _GPE scope */
+
+        {{"_GRT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_GSB", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_GTF", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_GTM", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_GTS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_GWS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_HID", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING)}},
+
+        {{"_HOT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_HPP", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (4 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0),
 
         /*
-         * For _HPX, a single package is returned, containing a Variable-length number
+         * For _HPX, a single package is returned, containing a variable-length number
          * of sub-packages. Each sub-package contains a PCI record setting.
          * There are several different type of record settings, of different
          * lengths, but all elements of all settings are Integers.
          */
-        {{"_HPX", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each (var Ints) */
-                          {{{ACPI_PTYPE2_MIN, ACPI_RTYPE_INTEGER, 5,0}, 0,0}},
-
-        {{"_HRV", 0, ACPI_RTYPE_INTEGER}},
-        {{"_IFT", 0, ACPI_RTYPE_INTEGER}}, /* See IPMI spec */
-        {{"_INI", 0, 0}},
-        {{"_IRC", 0, 0}},
-        {{"_LCK", 1, 0}},
-        {{"_LID", 0, ACPI_RTYPE_INTEGER}},
-        {{"_MAT", 0, ACPI_RTYPE_BUFFER}},
-        {{"_MBM", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (8 Int) */
-        {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 8, 0}, 0, 0}},
-
-        {{"_MLS", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (Pkgs) each (1 Str/1 Buf) */
-        {{{ACPI_PTYPE2, ACPI_RTYPE_STRING, 1, ACPI_RTYPE_BUFFER}, 1, 0}},
-
-        {{"_MSG", 1, 0}},
-        {{"_MSM", 4, ACPI_RTYPE_INTEGER}},
-        {{"_NTT", 0, ACPI_RTYPE_INTEGER}},
-        {{"_OFF", 0, 0}},
-        {{"_ON_", 0, 0}},
-        {{"_OS_", 0, ACPI_RTYPE_STRING}},
-        {{"_OSC", 4, ACPI_RTYPE_BUFFER}},
-        {{"_OST", 3, 0}},
-        {{"_PAI", 1, ACPI_RTYPE_INTEGER}},
-        {{"_PCL", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_PCT", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (2 Buf) */
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_BUFFER, 2,0}, 0,0}},
-
-        {{"_PDC", 1, 0}},
-        {{"_PDL", 0, ACPI_RTYPE_INTEGER}},
-        {{"_PIC", 1, 0}},
-        {{"_PIF", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (3 Int),(3 Str) */
-        {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 3, ACPI_RTYPE_STRING}, 3, 0}},
-
-        {{"_PLD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Bufs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_BUFFER, 0,0}, 0,0}},
-
-        {{"_PMC", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (11 Int),(3 Str) */
-        {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 11, ACPI_RTYPE_STRING}, 3,
-          0}},
-
-        {{"_PMD", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (Refs) */
-        {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
-
-        {{"_PMM", 0, ACPI_RTYPE_INTEGER}},
-        {{"_PPC", 0, ACPI_RTYPE_INTEGER}},
-        {{"_PPE", 0, ACPI_RTYPE_INTEGER}}, /* See dig64 spec */
-        {{"_PR0", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_PR1", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_PR2", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_PR3", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (Refs) */
-        {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
-
-        {{"_PRE", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (Refs) */
-        {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
-
-        {{"_PRL", 0, ACPI_RTYPE_PACKAGE}},      /* Variable-length (Refs) */
-        {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0}, 0, 0}},
-
-        {{"_PRS", 0, ACPI_RTYPE_BUFFER}},
+        {{"_HPX", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each (var Ints) */
+        PACKAGE_INFO(ACPI_PTYPE2_MIN, ACPI_RTYPE_INTEGER, 5, 0, 0, 0),
+
+        {{"_HRV", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_IFT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}}, /* See IPMI spec */
+
+        {{"_INI", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_IRC", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_LCK", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_LID", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_MAT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_MBM", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (8 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 8, 0, 0, 0),
+
+        {{"_MLS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each (1 Str/1 Buf) */
+        PACKAGE_INFO(ACPI_PTYPE2, ACPI_RTYPE_STRING, 1, ACPI_RTYPE_BUFFER, 1,
+                     0),
+
+        {{"_MSG", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_MSM",
+          METHOD_4ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER,
+                       ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_NTT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_OFF", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_ON_", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_OS_", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_STRING)}},
+
+        {{"_OSC",
+          METHOD_4ARGS(ACPI_TYPE_BUFFER, ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER,
+                       ACPI_TYPE_BUFFER),
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_OST",
+          METHOD_3ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER, ACPI_TYPE_BUFFER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PAI", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_PCL", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PCT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (2 Buf) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_BUFFER, 2, 0, 0, 0),
+
+        {{"_PDC", METHOD_1ARGS(ACPI_TYPE_BUFFER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PDL", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_PIC", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PIF", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (3 Int),(3 Str) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 3,
+                     ACPI_RTYPE_STRING, 3, 0),
+
+        {{"_PLD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Bufs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_BUFFER, 0, 0, 0, 0),
+
+        {{"_PMC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (11 Int),(3 Str) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 11,
+                     ACPI_RTYPE_STRING, 3, 0),
+
+        {{"_PMD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PMM", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_PPC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_PPE", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}}, /* See dig64 spec */
+
+        {{"_PR0", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PR1", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PR2", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PR3", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PRE", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PRL", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PRS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
 
         /*
          * For _PRT, many BIOSs reverse the 3rd and 4th Package elements (Source
@@ -410,47 +709,89 @@ static const union acpi_predefined_info predefined_names[] = {
          * warning, add the ACPI_RTYPE_REFERENCE type to the 4th element (index 3)
          * in the statement below.
          */
-        {{"_PRT", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each (4): Int,Int,Int/Ref,Int */
-                          {{{ACPI_PTYPE2_FIXED, 4, ACPI_RTYPE_INTEGER,ACPI_RTYPE_INTEGER},
-                          ACPI_RTYPE_INTEGER | ACPI_RTYPE_REFERENCE,
-                          ACPI_RTYPE_INTEGER}},
-
-        {{"_PRW", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each: Pkg/Int,Int,[Variable-length Refs] (Pkg is Ref/Int) */
-                          {{{ACPI_PTYPE1_OPTION, 2, ACPI_RTYPE_INTEGER | ACPI_RTYPE_PACKAGE,
-                          ACPI_RTYPE_INTEGER}, ACPI_RTYPE_REFERENCE,0}},
-
-        {{"_PS0", 0, 0}},
-        {{"_PS1", 0, 0}},
-        {{"_PS2", 0, 0}},
-        {{"_PS3", 0, 0}},
-        {{"_PSC", 0, ACPI_RTYPE_INTEGER}},
-        {{"_PSD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each (5 Int) with count */
-                          {{{ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER,0,0}, 0,0}},
-
-        {{"_PSE", 1, 0}},
-        {{"_PSL", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_PSR", 0, ACPI_RTYPE_INTEGER}},
-        {{"_PSS", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each (6 Int) */
-                          {{{ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 6,0}, 0,0}},
-
-        {{"_PSV", 0, ACPI_RTYPE_INTEGER}},
-        {{"_PSW", 1, 0}},
-        {{"_PTC", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (2 Buf) */
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_BUFFER, 2,0}, 0,0}},
-
-        {{"_PTP", 2, ACPI_RTYPE_INTEGER}},
-        {{"_PTS", 1, 0}},
-        {{"_PUR", 0, ACPI_RTYPE_PACKAGE}},      /* Fixed-length (2 Int) */
-        {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2, 0}, 0, 0}},
-
-        {{"_PXM", 0, ACPI_RTYPE_INTEGER}},
-        {{"_REG", 2, 0}},
-        {{"_REV", 0, ACPI_RTYPE_INTEGER}},
-        {{"_RMV", 0, ACPI_RTYPE_INTEGER}},
-        {{"_ROM", 2, ACPI_RTYPE_BUFFER}},
-        {{"_RTV", 0, ACPI_RTYPE_INTEGER}},
+        {{"_PRT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each (4): Int,Int,Int/Ref,Int */
+        PACKAGE_INFO(ACPI_PTYPE2_FIXED, 4, ACPI_RTYPE_INTEGER,
+                     ACPI_RTYPE_INTEGER,
+                     ACPI_RTYPE_INTEGER | ACPI_RTYPE_REFERENCE,
+                     ACPI_RTYPE_INTEGER),
+
+        {{"_PRW", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each: Pkg/Int,Int,[Variable-length Refs] (Pkg is Ref/Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_OPTION, 2,
+                     ACPI_RTYPE_INTEGER | ACPI_RTYPE_PACKAGE,
+                     ACPI_RTYPE_INTEGER, ACPI_RTYPE_REFERENCE, 0),
+
+        {{"_PS0", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PS1", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PS2", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PS3", METHOD_0ARGS,
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PSC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_PSD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each (5 Int) with count */
+        PACKAGE_INFO(ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER, 0, 0, 0, 0),
+
+        {{"_PSE", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PSL", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_PSR", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_PSS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each (6 Int) */
+        PACKAGE_INFO(ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 6, 0, 0, 0),
+
+        {{"_PSV", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_PSW", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PTC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (2 Buf) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_BUFFER, 2, 0, 0, 0),
+
+        {{"_PTP", METHOD_2ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_PTS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_PUR", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (2 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2, 0, 0, 0),
+
+        {{"_PXM", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_REG", METHOD_2ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_REV", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_RMV", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_ROM", METHOD_2ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_RTV", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
 
         /*
          * For _S0_ through _S5_, the ACPI spec defines a return Package
@@ -458,111 +799,285 @@ static const union acpi_predefined_info predefined_names[] = {
          * Allow this by making the objects "Variable-length length", but all elements
          * must be Integers.
          */
-        {{"_S0_", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (1 Int) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1,0}, 0,0}},
-
-        {{"_S1_", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (1 Int) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1,0}, 0,0}},
-
-        {{"_S2_", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (1 Int) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1,0}, 0,0}},
-
-        {{"_S3_", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (1 Int) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1,0}, 0,0}},
-
-        {{"_S4_", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (1 Int) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1,0}, 0,0}},
-
-        {{"_S5_", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (1 Int) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1,0}, 0,0}},
-
-        {{"_S1D", 0, ACPI_RTYPE_INTEGER}},
-        {{"_S2D", 0, ACPI_RTYPE_INTEGER}},
-        {{"_S3D", 0, ACPI_RTYPE_INTEGER}},
-        {{"_S4D", 0, ACPI_RTYPE_INTEGER}},
-        {{"_S0W", 0, ACPI_RTYPE_INTEGER}},
-        {{"_S1W", 0, ACPI_RTYPE_INTEGER}},
-        {{"_S2W", 0, ACPI_RTYPE_INTEGER}},
-        {{"_S3W", 0, ACPI_RTYPE_INTEGER}},
-        {{"_S4W", 0, ACPI_RTYPE_INTEGER}},
-        {{"_SBS", 0, ACPI_RTYPE_INTEGER}},
-        {{"_SCP", 0x13, 0}},               /* Acpi 1.0 allowed 1 arg. Acpi 3.0 expanded to 3 args. Allow both. */
-                           /* Note: the 3-arg definition may be removed for ACPI 4.0 */
-        {{"_SDD", 1, 0}},
-        {{"_SEG", 0, ACPI_RTYPE_INTEGER}},
-        {{"_SHL", 1, ACPI_RTYPE_INTEGER}},
-        {{"_SLI", 0, ACPI_RTYPE_BUFFER}},
-        {{"_SPD", 1, ACPI_RTYPE_INTEGER}},
-        {{"_SRS", 1, 0}},
-        {{"_SRT", 1, ACPI_RTYPE_INTEGER}},
-        {{"_SRV", 0, ACPI_RTYPE_INTEGER}}, /* See IPMI spec */
-        {{"_SST", 1, 0}},
-        {{"_STA", 0, ACPI_RTYPE_INTEGER}},
-        {{"_STM", 3, 0}},
-        {{"_STP", 2, ACPI_RTYPE_INTEGER}},
-        {{"_STR", 0, ACPI_RTYPE_BUFFER}},
-        {{"_STV", 2, ACPI_RTYPE_INTEGER}},
-        {{"_SUB", 0, ACPI_RTYPE_STRING}},
-        {{"_SUN", 0, ACPI_RTYPE_INTEGER}},
-        {{"_SWS", 0, ACPI_RTYPE_INTEGER}},
-        {{"_TC1", 0, ACPI_RTYPE_INTEGER}},
-        {{"_TC2", 0, ACPI_RTYPE_INTEGER}},
-        {{"_TDL", 0, ACPI_RTYPE_INTEGER}},
-        {{"_TIP", 1, ACPI_RTYPE_INTEGER}},
-        {{"_TIV", 1, ACPI_RTYPE_INTEGER}},
-        {{"_TMP", 0, ACPI_RTYPE_INTEGER}},
-        {{"_TPC", 0, ACPI_RTYPE_INTEGER}},
-        {{"_TPT", 1, 0}},
-        {{"_TRT", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each 2 Ref/6 Int */
-                          {{{ACPI_PTYPE2, ACPI_RTYPE_REFERENCE, 2, ACPI_RTYPE_INTEGER}, 6, 0}},
-
-        {{"_TSD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each 5 Int with count */
-                          {{{ACPI_PTYPE2_COUNT,ACPI_RTYPE_INTEGER, 5,0}, 0,0}},
-
-        {{"_TSP", 0, ACPI_RTYPE_INTEGER}},
-        {{"_TSS", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Pkgs) each 5 Int */
-                          {{{ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 5,0}, 0,0}},
-
-        {{"_TST", 0, ACPI_RTYPE_INTEGER}},
-        {{"_TTS", 1, 0}},
-        {{"_TZD", 0, ACPI_RTYPE_PACKAGE}}, /* Variable-length (Refs) */
-                          {{{ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0,0}, 0,0}},
-
-        {{"_TZM", 0, ACPI_RTYPE_REFERENCE}},
-        {{"_TZP", 0, ACPI_RTYPE_INTEGER}},
-        {{"_UID", 0, ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING}},
-        {{"_UPC", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (4 Int) */
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4,0}, 0,0}},
-
-        {{"_UPD", 0, ACPI_RTYPE_INTEGER}},
-        {{"_UPP", 0, ACPI_RTYPE_INTEGER}},
-        {{"_VPO", 0, ACPI_RTYPE_INTEGER}},
+        {{"_S0_", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (1 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0),
+
+        {{"_S1_", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (1 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0),
+
+        {{"_S2_", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (1 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0),
+
+        {{"_S3_", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (1 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0),
+
+        {{"_S4_", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (1 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0),
+
+        {{"_S5_", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (1 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_INTEGER, 1, 0, 0, 0),
+
+        {{"_S1D", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_S2D", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_S3D", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_S4D", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_S0W", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_S1W", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_S2W", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_S3W", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_S4W", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_SBS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_SCP", METHOD_1ARGS(ACPI_TYPE_INTEGER) | ARG_COUNT_IS_MINIMUM,
+          METHOD_NO_RETURN_VALUE}},     /* Acpi 1.0 allowed 1 integer arg. Acpi 3.0 expanded to 3 args. Allow both. */
+
+        {{"_SDD", METHOD_1ARGS(ACPI_TYPE_BUFFER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_SEG", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_SHL", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_SLI", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_SPD", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_SRS", METHOD_1ARGS(ACPI_TYPE_BUFFER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_SRT", METHOD_1ARGS(ACPI_TYPE_BUFFER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_SRV", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}}, /* See IPMI spec */
+
+        {{"_SST", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_STA", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_STM",
+          METHOD_3ARGS(ACPI_TYPE_BUFFER, ACPI_TYPE_BUFFER, ACPI_TYPE_BUFFER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_STP", METHOD_2ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_STR", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_STV", METHOD_2ARGS(ACPI_TYPE_INTEGER, ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_SUB", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_STRING)}},
+
+        {{"_SUN", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_SWS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TC1", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TC2", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TDL", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TIP", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TIV", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TMP", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TPC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TPT", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_TRT", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each 2 Ref/6 Int */
+        PACKAGE_INFO(ACPI_PTYPE2, ACPI_RTYPE_REFERENCE, 2, ACPI_RTYPE_INTEGER,
+                     6, 0),
+
+        {{"_TSD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each 5 Int with count */
+        PACKAGE_INFO(ACPI_PTYPE2_COUNT, ACPI_RTYPE_INTEGER, 5, 0, 0, 0),
+
+        {{"_TSP", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TSS", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Pkgs) each 5 Int */
+        PACKAGE_INFO(ACPI_PTYPE2, ACPI_RTYPE_INTEGER, 5, 0, 0, 0),
+
+        {{"_TST", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_TTS", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_NO_RETURN_VALUE}},
+
+        {{"_TZD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Variable-length (Refs) */
+        PACKAGE_INFO(ACPI_PTYPE1_VAR, ACPI_RTYPE_REFERENCE, 0, 0, 0, 0),
+
+        {{"_TZM", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_REFERENCE)}},
+
+        {{"_TZP", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_UID", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING)}},
+
+        {{"_UPC", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_PACKAGE)}}, /* Fixed-length (4 Int) */
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 4, 0, 0, 0),
+
+        {{"_UPD", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_UPP", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
+
+        {{"_VPO", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER)}},
 
         /* Acpi 1.0 defined _WAK with no return value. Later, it was changed to return a package */
 
-        {{"_WAK", 1,
-          ACPI_RTYPE_NONE | ACPI_RTYPE_INTEGER | ACPI_RTYPE_PACKAGE}},
-                          {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2,0}, 0,0}}, /* Fixed-length (2 Int), but is optional */
+        {{"_WAK", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_NONE | ACPI_RTYPE_INTEGER |
+                         ACPI_RTYPE_PACKAGE)}},
+        PACKAGE_INFO(ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 2, 0, 0, 0),        /* Fixed-length (2 Int), but is optional */
 
         /* _WDG/_WED are MS extensions defined by "Windows Instrumentation" */
 
-        {{"_WDG", 0, ACPI_RTYPE_BUFFER}},
-        {{"_WED", 1,
-          ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER}},
+        {{"_WDG", METHOD_0ARGS,
+          METHOD_RETURNS(ACPI_RTYPE_BUFFER)}},
+
+        {{"_WED", METHOD_1ARGS(ACPI_TYPE_INTEGER),
+          METHOD_RETURNS(ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING |
+                         ACPI_RTYPE_BUFFER)}},
 
-        {{{0, 0, 0, 0}, 0, 0}}  /* Table terminator */
+        PACKAGE_INFO(0, 0, 0, 0, 0, 0)  /* Table terminator */
 };
+#else
+extern const union acpi_predefined_info acpi_gbl_predefined_methods[];
+#endif
 
-#if 0
+#if (defined ACPI_CREATE_RESOURCE_TABLE && defined ACPI_APPLICATION)
+/******************************************************************************
+ *
+ * Predefined names for use in Resource Descriptors. These names do not
+ * appear in the global Predefined Name table (since these names never
+ * appear in actual AML byte code, only in the original ASL)
+ *
+ * Note: Used by iASL compiler and acpi_help utility only.
+ *
+ *****************************************************************************/
 
-        /* This is an internally implemented control method, no need to check */
-{ {
-"_OSI", 1, ACPI_RTYPE_INTEGER}},
+const union acpi_predefined_info acpi_gbl_resource_names[] = {
+        {{"_ADR", WIDTH_16 | WIDTH_64, 0}},
+        {{"_ALN", WIDTH_8 | WIDTH_16 | WIDTH_32, 0}},
+        {{"_ASI", WIDTH_8, 0}},
+        {{"_ASZ", WIDTH_8, 0}},
+        {{"_ATT", WIDTH_64, 0}},
+        {{"_BAS", WIDTH_16 | WIDTH_32, 0}},
+        {{"_BM_", WIDTH_1, 0}},
+        {{"_DBT", WIDTH_16, 0}},        /* Acpi 5.0 */
+        {{"_DEC", WIDTH_1, 0}},
+        {{"_DMA", WIDTH_8, 0}},
+        {{"_DPL", WIDTH_1, 0}}, /* Acpi 5.0 */
+        {{"_DRS", WIDTH_16, 0}},        /* Acpi 5.0 */
+        {{"_END", WIDTH_1, 0}}, /* Acpi 5.0 */
+        {{"_FLC", WIDTH_2, 0}}, /* Acpi 5.0 */
+        {{"_GRA", WIDTH_ADDRESS, 0}},
+        {{"_HE_", WIDTH_1, 0}},
+        {{"_INT", WIDTH_16 | WIDTH_32, 0}},
+        {{"_IOR", WIDTH_2, 0}}, /* Acpi 5.0 */
+        {{"_LEN", WIDTH_8 | WIDTH_ADDRESS, 0}},
+        {{"_LIN", WIDTH_8, 0}}, /* Acpi 5.0 */
+        {{"_LL_", WIDTH_1, 0}},
+        {{"_MAF", WIDTH_1, 0}},
+        {{"_MAX", WIDTH_ADDRESS, 0}},
+        {{"_MEM", WIDTH_2, 0}},
+        {{"_MIF", WIDTH_1, 0}},
+        {{"_MIN", WIDTH_ADDRESS, 0}},
+        {{"_MOD", WIDTH_1, 0}}, /* Acpi 5.0 */
+        {{"_MTP", WIDTH_2, 0}},
+        {{"_PAR", WIDTH_8, 0}}, /* Acpi 5.0 */
+        {{"_PHA", WIDTH_1, 0}}, /* Acpi 5.0 */
+        {{"_PIN", WIDTH_16, 0}},        /* Acpi 5.0 */
+        {{"_PPI", WIDTH_8, 0}}, /* Acpi 5.0 */
+        {{"_POL", WIDTH_1 | WIDTH_2, 0}},       /* Acpi 5.0 */
+        {{"_RBO", WIDTH_8, 0}},
+        {{"_RBW", WIDTH_8, 0}},
+        {{"_RNG", WIDTH_1, 0}},
+        {{"_RT_", WIDTH_8, 0}}, /* Acpi 3.0 */
+        {{"_RW_", WIDTH_1, 0}},
+        {{"_RXL", WIDTH_16, 0}},        /* Acpi 5.0 */
+        {{"_SHR", WIDTH_2, 0}},
+        {{"_SIZ", WIDTH_2, 0}},
+        {{"_SLV", WIDTH_1, 0}}, /* Acpi 5.0 */
+        {{"_SPE", WIDTH_32, 0}},        /* Acpi 5.0 */
+        {{"_STB", WIDTH_2, 0}}, /* Acpi 5.0 */
+        {{"_TRA", WIDTH_ADDRESS, 0}},
+        {{"_TRS", WIDTH_1, 0}},
+        {{"_TSF", WIDTH_8, 0}}, /* Acpi 3.0 */
+        {{"_TTP", WIDTH_1, 0}},
+        {{"_TXL", WIDTH_16, 0}},        /* Acpi 5.0 */
+        {{"_TYP", WIDTH_2 | WIDTH_16, 0}},
+        {{"_VEN", VARIABLE_DATA, 0}},   /* Acpi 5.0 */
+        PACKAGE_INFO(0, 0, 0, 0, 0, 0)  /* Table terminator */
+};
 
-        /* TBD: */
-        _PRT - currently ignore reversed entries. attempt to fix here?
-        think about possibly fixing package elements like _BIF, etc.
+static const union acpi_predefined_info acpi_gbl_scope_names[] = {
+        {{"_GPE", 0, 0}},
+        {{"_PR_", 0, 0}},
+        {{"_SB_", 0, 0}},
+        {{"_SI_", 0, 0}},
+        {{"_TZ_", 0, 0}},
+        PACKAGE_INFO(0, 0, 0, 0, 0, 0)  /* Table terminator */
+};
+#else
+extern const union acpi_predefined_info acpi_gbl_resource_names[];
 #endif
 
 #endif
-#endif
diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h
index 0082fa0a6139..202f4f12d3e2 100644
--- a/drivers/acpi/acpica/acutils.h
+++ b/drivers/acpi/acpica/acutils.h
@@ -113,9 +113,10 @@ struct acpi_pkg_info {
         u32 num_packages;
 };
 
+/* Object reference counts */
+
 #define REF_INCREMENT       (u16) 0
 #define REF_DECREMENT       (u16) 1
-#define REF_FORCE_DELETE    (u16) 2
 
 /* acpi_ut_dump_buffer */
 
@@ -421,7 +422,7 @@ acpi_ut_get_object_size(union acpi_operand_object *obj, acpi_size * obj_length);
  */
 acpi_status acpi_ut_initialize_interfaces(void);
 
-void acpi_ut_interface_terminate(void);
+acpi_status acpi_ut_interface_terminate(void);
 
 acpi_status acpi_ut_install_interface(acpi_string interface_name);
 
@@ -432,6 +433,26 @@ struct acpi_interface_info *acpi_ut_get_interface(acpi_string interface_name);
 acpi_status acpi_ut_osi_implementation(struct acpi_walk_state *walk_state);
 
 /*
+ * utpredef - support for predefined names
+ */
+const union acpi_predefined_info *acpi_ut_get_next_predefined_method(const union
+                                                                     acpi_predefined_info
+                                                                     *this_name);
+
+const union acpi_predefined_info *acpi_ut_match_predefined_method(char *name);
+
+const union acpi_predefined_info *acpi_ut_match_resource_name(char *name);
+
+void
+acpi_ut_display_predefined_method(char *buffer,
+                                  const union acpi_predefined_info *this_name,
+                                  u8 multi_line);
+
+void acpi_ut_get_expected_return_types(char *buffer, u32 expected_btypes);
+
+u32 acpi_ut_get_resource_bit_width(char *buffer, u16 types);
+
+/*
  * utstate - Generic state creation/cache routines
  */
 void
@@ -483,7 +504,8 @@ acpi_ut_short_divide(u64 in_dividend,
 /*
  * utmisc
  */
-const char *acpi_ut_validate_exception(acpi_status status);
+const struct acpi_exception_info *acpi_ut_validate_exception(acpi_status
+                                                             status);
 
 u8 acpi_ut_is_pci_root_bridge(char *id);
 
diff --git a/drivers/acpi/acpica/dsutils.c b/drivers/acpi/acpica/dsutils.c
index 4d8c992a51d8..99778997c35a 100644
--- a/drivers/acpi/acpica/dsutils.c
+++ b/drivers/acpi/acpica/dsutils.c
@@ -178,7 +178,7 @@ acpi_ds_is_result_used(union acpi_parse_object * op,
 
         if (!op) {
                 ACPI_ERROR((AE_INFO, "Null Op"));
-                return_VALUE(TRUE);
+                return_UINT8(TRUE);
         }
 
         /*
@@ -210,7 +210,7 @@ acpi_ds_is_result_used(union acpi_parse_object * op,
                                   "At Method level, result of [%s] not used\n",
                                   acpi_ps_get_opcode_name(op->common.
                                                           aml_opcode)));
-                return_VALUE(FALSE);
+                return_UINT8(FALSE);
         }
 
         /* Get info on the parent. The root_op is AML_SCOPE */
@@ -219,7 +219,7 @@ acpi_ds_is_result_used(union acpi_parse_object * op,
             acpi_ps_get_opcode_info(op->common.parent->common.aml_opcode);
         if (parent_info->class == AML_CLASS_UNKNOWN) {
                 ACPI_ERROR((AE_INFO, "Unknown parent opcode Op=%p", op));
-                return_VALUE(FALSE);
+                return_UINT8(FALSE);
         }
 
         /*
@@ -307,7 +307,7 @@ acpi_ds_is_result_used(union acpi_parse_object * op,
                           acpi_ps_get_opcode_name(op->common.parent->common.
                                                   aml_opcode), op));
 
-        return_VALUE(TRUE);
+        return_UINT8(TRUE);
 
       result_not_used:
         ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
@@ -316,7 +316,7 @@ acpi_ds_is_result_used(union acpi_parse_object * op,
                           acpi_ps_get_opcode_name(op->common.parent->common.
                                                   aml_opcode), op));
 
-        return_VALUE(FALSE);
+        return_UINT8(FALSE);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/dswexec.c b/drivers/acpi/acpica/dswexec.c
index 44f8325c2bae..e2199a947470 100644
--- a/drivers/acpi/acpica/dswexec.c
+++ b/drivers/acpi/acpica/dswexec.c
@@ -693,7 +693,7 @@ acpi_status acpi_ds_exec_end_op(struct acpi_walk_state *walk_state)
                 default:
 
                         ACPI_ERROR((AE_INFO,
-                                    "Unimplemented opcode, class=0x%X type=0x%X Opcode=-0x%X Op=%p",
+                                    "Unimplemented opcode, class=0x%X type=0x%X Opcode=0x%X Op=%p",
                                     op_class, op_type, op->common.aml_opcode,
                                     op));
 
diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index b8ea0b26cde3..83cd45f4a870 100644
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -257,6 +257,8 @@ u32 acpi_ev_fixed_event_detect(void)
  *
  * DESCRIPTION: Clears the status bit for the requested event, calls the
  *              handler that previously registered for the event.
+ *              NOTE: If there is no handler for the event, the event is
+ *              disabled to prevent further interrupts.
  *
  ******************************************************************************/
 
@@ -271,17 +273,17 @@ static u32 acpi_ev_fixed_event_dispatch(u32 event)
                                       status_register_id, ACPI_CLEAR_STATUS);
 
         /*
-         * Make sure we've got a handler. If not, report an error. The event is
-         * disabled to prevent further interrupts.
+         * Make sure that a handler exists. If not, report an error
+         * and disable the event to prevent further interrupts.
          */
-        if (NULL == acpi_gbl_fixed_event_handlers[event].handler) {
+        if (!acpi_gbl_fixed_event_handlers[event].handler) {
                 (void)acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
                                               enable_register_id,
                                               ACPI_DISABLE_EVENT);
 
                 ACPI_ERROR((AE_INFO,
-                            "No installed handler for fixed event [0x%08X]",
-                            event));
+                            "No installed handler for fixed event - %s (%u), disabling",
+                            acpi_ut_get_event_name(event), event));
 
                 return (ACPI_INTERRUPT_NOT_HANDLED);
         }
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index b9adb9a7ed85..a493b528f8f9 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -707,7 +707,7 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
                 if (ACPI_FAILURE(status)) {
                         ACPI_EXCEPTION((AE_INFO, status,
                                         "Unable to clear GPE%02X", gpe_number));
-                        return_VALUE(ACPI_INTERRUPT_NOT_HANDLED);
+                        return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
                 }
         }
 
@@ -724,7 +724,7 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
         if (ACPI_FAILURE(status)) {
                 ACPI_EXCEPTION((AE_INFO, status,
                                 "Unable to disable GPE%02X", gpe_number));
-                return_VALUE(ACPI_INTERRUPT_NOT_HANDLED);
+                return_UINT32(ACPI_INTERRUPT_NOT_HANDLED);
         }
 
         /*
@@ -784,7 +784,7 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device,
                 break;
         }
 
-        return_VALUE(ACPI_INTERRUPT_HANDLED);
+        return_UINT32(ACPI_INTERRUPT_HANDLED);
 }
 
 #endif                          /* !ACPI_REDUCED_HARDWARE */
diff --git a/drivers/acpi/acpica/evsci.c b/drivers/acpi/acpica/evsci.c
index f4b43bede015..b905acf7aacd 100644
--- a/drivers/acpi/acpica/evsci.c
+++ b/drivers/acpi/acpica/evsci.c
@@ -89,7 +89,7 @@ static u32 ACPI_SYSTEM_XFACE acpi_ev_sci_xrupt_handler(void *context)
          */
         interrupt_handled |= acpi_ev_gpe_detect(gpe_xrupt_list);
 
-        return_VALUE(interrupt_handled);
+        return_UINT32(interrupt_handled);
 }
 
 /*******************************************************************************
@@ -120,7 +120,7 @@ u32 ACPI_SYSTEM_XFACE acpi_ev_gpe_xrupt_handler(void *context)
 
         interrupt_handled |= acpi_ev_gpe_detect(gpe_xrupt_list);
 
-        return_VALUE(interrupt_handled);
+        return_UINT32(interrupt_handled);
 }
 
 /******************************************************************************
diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index ddffd6847914..ca5fba99c33b 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -467,9 +467,9 @@ acpi_install_fixed_event_handler(u32 event,
                 return_ACPI_STATUS(status);
         }
 
-        /* Don't allow two handlers. */
+        /* Do not allow multiple handlers */
 
-        if (NULL != acpi_gbl_fixed_event_handlers[event].handler) {
+        if (acpi_gbl_fixed_event_handlers[event].handler) {
                 status = AE_ALREADY_EXISTS;
                 goto cleanup;
         }
@@ -483,8 +483,9 @@ acpi_install_fixed_event_handler(u32 event,
         if (ACPI_SUCCESS(status))
                 status = acpi_enable_event(event, 0);
         if (ACPI_FAILURE(status)) {
-                ACPI_WARNING((AE_INFO, "Could not enable fixed event 0x%X",
-                              event));
+                ACPI_WARNING((AE_INFO,
+                              "Could not enable fixed event - %s (%u)",
+                              acpi_ut_get_event_name(event), event));
 
                 /* Remove the handler */
 
@@ -492,7 +493,8 @@ acpi_install_fixed_event_handler(u32 event,
                 acpi_gbl_fixed_event_handlers[event].context = NULL;
         } else {
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                  "Enabled fixed event %X, Handler=%p\n", event,
+                                  "Enabled fixed event %s (%X), Handler=%p\n",
+                                  acpi_ut_get_event_name(event), event,
                                   handler));
         }
 
@@ -544,11 +546,12 @@ acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler)
 
         if (ACPI_FAILURE(status)) {
                 ACPI_WARNING((AE_INFO,
-                              "Could not write to fixed event enable register 0x%X",
-                              event));
+                              "Could not disable fixed event - %s (%u)",
+                              acpi_ut_get_event_name(event), event));
         } else {
-                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Disabled fixed event %X\n",
-                                  event));
+                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+                                  "Disabled fixed event - %s (%X)\n",
+                                  acpi_ut_get_event_name(event), event));
         }
 
         (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS);
diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index d6e4e42316db..7039606a0ba8 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -74,6 +74,12 @@ acpi_status acpi_enable(void)
                 return_ACPI_STATUS(AE_NO_ACPI_TABLES);
         }
 
+        /* If the Hardware Reduced flag is set, machine is always in acpi mode */
+
+        if (acpi_gbl_reduced_hardware) {
+                return_ACPI_STATUS(AE_OK);
+        }
+
         /* Check current mode */
 
         if (acpi_hw_get_mode() == ACPI_SYS_MODE_ACPI) {
@@ -126,6 +132,12 @@ acpi_status acpi_disable(void)
 
         ACPI_FUNCTION_TRACE(acpi_disable);
 
+        /* If the Hardware Reduced flag is set, machine is always in acpi mode */
+
+        if (acpi_gbl_reduced_hardware) {
+                return_ACPI_STATUS(AE_OK);
+        }
+
         if (acpi_hw_get_mode() == ACPI_SYS_MODE_LEGACY) {
                 ACPI_DEBUG_PRINT((ACPI_DB_INIT,
                                   "System is already in legacy (non-ACPI) mode\n"));
diff --git a/drivers/acpi/acpica/exoparg2.c b/drivers/acpi/acpica/exoparg2.c
index e491e46f17df..b0838a4ea53e 100644
--- a/drivers/acpi/acpica/exoparg2.c
+++ b/drivers/acpi/acpica/exoparg2.c
@@ -257,7 +257,7 @@ acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
         union acpi_operand_object *return_desc = NULL;
         u64 index;
         acpi_status status = AE_OK;
-        acpi_size length;
+        acpi_size length = 0;
 
         ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_1T_1R,
                                 acpi_ps_get_opcode_name(walk_state->opcode));
@@ -320,7 +320,6 @@ acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
                  * NOTE: A length of zero is ok, and will create a zero-length, null
                  *       terminated string.
                  */
-                length = 0;
                 while ((length < operand[0]->buffer.length) &&
                        (length < operand[1]->integer.value) &&
                        (operand[0]->buffer.pointer[length])) {
@@ -376,6 +375,7 @@ acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
                 case ACPI_TYPE_STRING:
 
                         if (index >= operand[0]->string.length) {
+                                length = operand[0]->string.length;
                                 status = AE_AML_STRING_LIMIT;
                         }
 
@@ -386,6 +386,7 @@ acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
                 case ACPI_TYPE_BUFFER:
 
                         if (index >= operand[0]->buffer.length) {
+                                length = operand[0]->buffer.length;
                                 status = AE_AML_BUFFER_LIMIT;
                         }
 
@@ -396,6 +397,7 @@ acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
                 case ACPI_TYPE_PACKAGE:
 
                         if (index >= operand[0]->package.count) {
+                                length = operand[0]->package.count;
                                 status = AE_AML_PACKAGE_LIMIT;
                         }
 
@@ -414,8 +416,9 @@ acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state)
 
                 if (ACPI_FAILURE(status)) {
                         ACPI_EXCEPTION((AE_INFO, status,
-                                        "Index (0x%8.8X%8.8X) is beyond end of object",
-                                        ACPI_FORMAT_UINT64(index)));
+                                        "Index (0x%X%8.8X) is beyond end of object (length 0x%X)",
+                                        ACPI_FORMAT_UINT64(index),
+                                        (u32)length));
                         goto cleanup;
                 }
 
diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c
index d6eab81f54fb..6b728aef2dca 100644
--- a/drivers/acpi/acpica/exprep.c
+++ b/drivers/acpi/acpica/exprep.c
@@ -276,7 +276,7 @@ acpi_ex_decode_field_access(union acpi_operand_object *obj_desc,
                 /* Invalid field access type */
 
                 ACPI_ERROR((AE_INFO, "Unknown field access type 0x%X", access));
-                return_VALUE(0);
+                return_UINT32(0);
         }
 
         if (obj_desc->common.type == ACPI_TYPE_BUFFER_FIELD) {
@@ -289,7 +289,7 @@ acpi_ex_decode_field_access(union acpi_operand_object *obj_desc,
         }
 
         *return_byte_alignment = byte_alignment;
-        return_VALUE(bit_length);
+        return_UINT32(bit_length);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c
index b205cbb4b50c..99dc7b287d55 100644
--- a/drivers/acpi/acpica/exutils.c
+++ b/drivers/acpi/acpica/exutils.c
@@ -340,7 +340,7 @@ static u32 acpi_ex_digits_needed(u64 value, u32 base)
         /* u64 is unsigned, so we don't worry about a '-' prefix */
 
         if (value == 0) {
-                return_VALUE(1);
+                return_UINT32(1);
         }
 
         current_value = value;
@@ -354,7 +354,7 @@ static u32 acpi_ex_digits_needed(u64 value, u32 base)
                 num_digits++;
         }
 
-        return_VALUE(num_digits);
+        return_UINT32(num_digits);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c
index deb3f61e2bd1..579c3a53ac87 100644
--- a/drivers/acpi/acpica/hwacpi.c
+++ b/drivers/acpi/acpica/hwacpi.c
@@ -66,6 +66,12 @@ acpi_status acpi_hw_set_mode(u32 mode)
 
         ACPI_FUNCTION_TRACE(hw_set_mode);
 
+        /* If the Hardware Reduced flag is set, machine is always in acpi mode */
+
+        if (acpi_gbl_reduced_hardware) {
+                return_ACPI_STATUS(AE_OK);
+        }
+
         /*
          * ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
          * system does not support mode transition.
@@ -146,23 +152,29 @@ u32 acpi_hw_get_mode(void)
 
         ACPI_FUNCTION_TRACE(hw_get_mode);
 
+        /* If the Hardware Reduced flag is set, machine is always in acpi mode */
+
+        if (acpi_gbl_reduced_hardware) {
+                return_UINT32(ACPI_SYS_MODE_ACPI);
+        }
+
         /*
          * ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
          * system does not support mode transition.
          */
         if (!acpi_gbl_FADT.smi_command) {
-                return_VALUE(ACPI_SYS_MODE_ACPI);
+                return_UINT32(ACPI_SYS_MODE_ACPI);
         }
 
         status = acpi_read_bit_register(ACPI_BITREG_SCI_ENABLE, &value);
         if (ACPI_FAILURE(status)) {
-                return_VALUE(ACPI_SYS_MODE_LEGACY);
+                return_UINT32(ACPI_SYS_MODE_LEGACY);
         }
 
         if (value) {
-                return_VALUE(ACPI_SYS_MODE_ACPI);
+                return_UINT32(ACPI_SYS_MODE_ACPI);
         } else {
-                return_VALUE(ACPI_SYS_MODE_LEGACY);
+                return_UINT32(ACPI_SYS_MODE_LEGACY);
         }
 }
 
diff --git a/drivers/acpi/acpica/nsconvert.c b/drivers/acpi/acpica/nsconvert.c
new file mode 100644
index 000000000000..8f79a9d2d50e
--- /dev/null
+++ b/drivers/acpi/acpica/nsconvert.c
@@ -0,0 +1,443 @@
+/******************************************************************************
+ *
+ * Module Name: nsconvert - Object conversions for objects returned by
+ *                          predefined methods
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acinterp.h"
+#include "acpredef.h"
+#include "amlresrc.h"
+
+#define _COMPONENT          ACPI_NAMESPACE
+ACPI_MODULE_NAME("nsconvert")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_convert_to_integer
+ *
+ * PARAMETERS:  original_object     - Object to be converted
+ *              return_object       - Where the new converted object is returned
+ *
+ * RETURN:      Status. AE_OK if conversion was successful.
+ *
+ * DESCRIPTION: Attempt to convert a String/Buffer object to an Integer.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ns_convert_to_integer(union acpi_operand_object *original_object,
+                           union acpi_operand_object **return_object)
+{
+        union acpi_operand_object *new_object;
+        acpi_status status;
+        u64 value = 0;
+        u32 i;
+
+        switch (original_object->common.type) {
+        case ACPI_TYPE_STRING:
+
+                /* String-to-Integer conversion */
+
+                status = acpi_ut_strtoul64(original_object->string.pointer,
+                                           ACPI_ANY_BASE, &value);
+                if (ACPI_FAILURE(status)) {
+                        return (status);
+                }
+                break;
+
+        case ACPI_TYPE_BUFFER:
+
+                /* Buffer-to-Integer conversion. Max buffer size is 64 bits. */
+
+                if (original_object->buffer.length > 8) {
+                        return (AE_AML_OPERAND_TYPE);
+                }
+
+                /* Extract each buffer byte to create the integer */
+
+                for (i = 0; i < original_object->buffer.length; i++) {
+                        value |=
+                            ((u64)original_object->buffer.
+                             pointer[i] << (i * 8));
+                }
+                break;
+
+        default:
+                return (AE_AML_OPERAND_TYPE);
+        }
+
+        new_object = acpi_ut_create_integer_object(value);
+        if (!new_object) {
+                return (AE_NO_MEMORY);
+        }
+
+        *return_object = new_object;
+        return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_convert_to_string
+ *
+ * PARAMETERS:  original_object     - Object to be converted
+ *              return_object       - Where the new converted object is returned
+ *
+ * RETURN:      Status. AE_OK if conversion was successful.
+ *
+ * DESCRIPTION: Attempt to convert a Integer/Buffer object to a String.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_convert_to_string(union acpi_operand_object *original_object,
+                          union acpi_operand_object **return_object)
+{
+        union acpi_operand_object *new_object;
+        acpi_size length;
+        acpi_status status;
+
+        switch (original_object->common.type) {
+        case ACPI_TYPE_INTEGER:
+                /*
+                 * Integer-to-String conversion. Commonly, convert
+                 * an integer of value 0 to a NULL string. The last element of
+                 * _BIF and _BIX packages occasionally need this fix.
+                 */
+                if (original_object->integer.value == 0) {
+
+                        /* Allocate a new NULL string object */
+
+                        new_object = acpi_ut_create_string_object(0);
+                        if (!new_object) {
+                                return (AE_NO_MEMORY);
+                        }
+                } else {
+                        status =
+                            acpi_ex_convert_to_string(original_object,
+                                                      &new_object,
+                                                      ACPI_IMPLICIT_CONVERT_HEX);
+                        if (ACPI_FAILURE(status)) {
+                                return (status);
+                        }
+                }
+                break;
+
+        case ACPI_TYPE_BUFFER:
+                /*
+                 * Buffer-to-String conversion. Use a to_string
+                 * conversion, no transform performed on the buffer data. The best
+                 * example of this is the _BIF method, where the string data from
+                 * the battery is often (incorrectly) returned as buffer object(s).
+                 */
+                length = 0;
+                while ((length < original_object->buffer.length) &&
+                       (original_object->buffer.pointer[length])) {
+                        length++;
+                }
+
+                /* Allocate a new string object */
+
+                new_object = acpi_ut_create_string_object(length);
+                if (!new_object) {
+                        return (AE_NO_MEMORY);
+                }
+
+                /*
+                 * Copy the raw buffer data with no transform. String is already NULL
+                 * terminated at Length+1.
+                 */
+                ACPI_MEMCPY(new_object->string.pointer,
+                            original_object->buffer.pointer, length);
+                break;
+
+        default:
+                return (AE_AML_OPERAND_TYPE);
+        }
+
+        *return_object = new_object;
+        return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_convert_to_buffer
+ *
+ * PARAMETERS:  original_object     - Object to be converted
+ *              return_object       - Where the new converted object is returned
+ *
+ * RETURN:      Status. AE_OK if conversion was successful.
+ *
+ * DESCRIPTION: Attempt to convert a Integer/String/Package object to a Buffer.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_convert_to_buffer(union acpi_operand_object *original_object,
+                          union acpi_operand_object **return_object)
+{
+        union acpi_operand_object *new_object;
+        acpi_status status;
+        union acpi_operand_object **elements;
+        u32 *dword_buffer;
+        u32 count;
+        u32 i;
+
+        switch (original_object->common.type) {
+        case ACPI_TYPE_INTEGER:
+                /*
+                 * Integer-to-Buffer conversion.
+                 * Convert the Integer to a packed-byte buffer. _MAT and other
+                 * objects need this sometimes, if a read has been performed on a
+                 * Field object that is less than or equal to the global integer
+                 * size (32 or 64 bits).
+                 */
+                status =
+                    acpi_ex_convert_to_buffer(original_object, &new_object);
+                if (ACPI_FAILURE(status)) {
+                        return (status);
+                }
+                break;
+
+        case ACPI_TYPE_STRING:
+
+                /* String-to-Buffer conversion. Simple data copy */
+
+                new_object =
+                    acpi_ut_create_buffer_object(original_object->string.
+                                                 length);
+                if (!new_object) {
+                        return (AE_NO_MEMORY);
+                }
+
+                ACPI_MEMCPY(new_object->buffer.pointer,
+                            original_object->string.pointer,
+                            original_object->string.length);
+                break;
+
+        case ACPI_TYPE_PACKAGE:
+                /*
+                 * This case is often seen for predefined names that must return a
+                 * Buffer object with multiple DWORD integers within. For example,
+                 * _FDE and _GTM. The Package can be converted to a Buffer.
+                 */
+
+                /* All elements of the Package must be integers */
+
+                elements = original_object->package.elements;
+                count = original_object->package.count;
+
+                for (i = 0; i < count; i++) {
+                        if ((!*elements) ||
+                            ((*elements)->common.type != ACPI_TYPE_INTEGER)) {
+                                return (AE_AML_OPERAND_TYPE);
+                        }
+                        elements++;
+                }
+
+                /* Create the new buffer object to replace the Package */
+
+                new_object = acpi_ut_create_buffer_object(ACPI_MUL_4(count));
+                if (!new_object) {
+                        return (AE_NO_MEMORY);
+                }
+
+                /* Copy the package elements (integers) to the buffer as DWORDs */
+
+                elements = original_object->package.elements;
+                dword_buffer = ACPI_CAST_PTR(u32, new_object->buffer.pointer);
+
+                for (i = 0; i < count; i++) {
+                        *dword_buffer = (u32)(*elements)->integer.value;
+                        dword_buffer++;
+                        elements++;
+                }
+                break;
+
+        default:
+                return (AE_AML_OPERAND_TYPE);
+        }
+
+        *return_object = new_object;
+        return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_convert_to_unicode
+ *
+ * PARAMETERS:  original_object     - ASCII String Object to be converted
+ *              return_object       - Where the new converted object is returned
+ *
+ * RETURN:      Status. AE_OK if conversion was successful.
+ *
+ * DESCRIPTION: Attempt to convert a String object to a Unicode string Buffer.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_convert_to_unicode(union acpi_operand_object *original_object,
+                           union acpi_operand_object **return_object)
+{
+        union acpi_operand_object *new_object;
+        char *ascii_string;
+        u16 *unicode_buffer;
+        u32 unicode_length;
+        u32 i;
+
+        if (!original_object) {
+                return (AE_OK);
+        }
+
+        /* If a Buffer was returned, it must be at least two bytes long */
+
+        if (original_object->common.type == ACPI_TYPE_BUFFER) {
+                if (original_object->buffer.length < 2) {
+                        return (AE_AML_OPERAND_VALUE);
+                }
+
+                *return_object = NULL;
+                return (AE_OK);
+        }
+
+        /*
+         * The original object is an ASCII string. Convert this string to
+         * a unicode buffer.
+         */
+        ascii_string = original_object->string.pointer;
+        unicode_length = (original_object->string.length * 2) + 2;
+
+        /* Create a new buffer object for the Unicode data */
+
+        new_object = acpi_ut_create_buffer_object(unicode_length);
+        if (!new_object) {
+                return (AE_NO_MEMORY);
+        }
+
+        unicode_buffer = ACPI_CAST_PTR(u16, new_object->buffer.pointer);
+
+        /* Convert ASCII to Unicode */
+
+        for (i = 0; i < original_object->string.length; i++) {
+                unicode_buffer[i] = (u16)ascii_string[i];
+        }
+
+        *return_object = new_object;
+        return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ns_convert_to_resource
+ *
+ * PARAMETERS:  original_object     - Object to be converted
+ *              return_object       - Where the new converted object is returned
+ *
+ * RETURN:      Status. AE_OK if conversion was successful
+ *
+ * DESCRIPTION: Attempt to convert a Integer object to a resource_template
+ *              Buffer.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ns_convert_to_resource(union acpi_operand_object *original_object,
+                            union acpi_operand_object **return_object)
+{
+        union acpi_operand_object *new_object;
+        u8 *buffer;
+
+        /*
+         * We can fix the following cases for an expected resource template:
+         * 1. No return value (interpreter slack mode is disabled)
+         * 2. A "Return (Zero)" statement
+         * 3. A "Return empty buffer" statement
+         *
+         * We will return a buffer containing a single end_tag
+         * resource descriptor.
+         */
+        if (original_object) {
+                switch (original_object->common.type) {
+                case ACPI_TYPE_INTEGER:
+
+                        /* We can only repair an Integer==0 */
+
+                        if (original_object->integer.value) {
+                                return (AE_AML_OPERAND_TYPE);
+                        }
+                        break;
+
+                case ACPI_TYPE_BUFFER:
+
+                        if (original_object->buffer.length) {
+
+                                /* Additional checks can be added in the future */
+
+                                *return_object = NULL;
+                                return (AE_OK);
+                        }
+                        break;
+
+                case ACPI_TYPE_STRING:
+                default:
+
+                        return (AE_AML_OPERAND_TYPE);
+                }
+        }
+
+        /* Create the new buffer object for the resource descriptor */
+
+        new_object = acpi_ut_create_buffer_object(2);
+        if (!new_object) {
+                return (AE_NO_MEMORY);
+        }
+
+        buffer = ACPI_CAST_PTR(u8, new_object->buffer.pointer);
+
+        /* Initialize the Buffer with a single end_tag descriptor */
+
+        buffer[0] = (ACPI_RESOURCE_NAME_END_TAG | ASL_RDESC_END_TAG_SIZE);
+        buffer[1] = 0x00;
+
+        *return_object = new_object;
+        return (AE_OK);
+}
diff --git a/drivers/acpi/acpica/nseval.c b/drivers/acpi/acpica/nseval.c
index 1538f3eb2a8f..b61db69d5675 100644
--- a/drivers/acpi/acpica/nseval.c
+++ b/drivers/acpi/acpica/nseval.c
@@ -98,17 +98,21 @@ acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
         info->return_object = NULL;
         info->param_count = 0;
 
-        /*
-         * Get the actual namespace node for the target object. Handles these cases:
-         *
-         * 1) Null node, Pathname (absolute path)
-         * 2) Node, Pathname (path relative to Node)
-         * 3) Node, Null Pathname
-         */
-        status = acpi_ns_get_node(info->prefix_node, info->pathname,
-                                  ACPI_NS_NO_UPSEARCH, &info->resolved_node);
-        if (ACPI_FAILURE(status)) {
-                return_ACPI_STATUS(status);
+        if (!info->resolved_node) {
+                /*
+                 * Get the actual namespace node for the target object if we need to.
+                 * Handles these cases:
+                 *
+                 * 1) Null node, Pathname (absolute path)
+                 * 2) Node, Pathname (path relative to Node)
+                 * 3) Node, Null Pathname
+                 */
+                status = acpi_ns_get_node(info->prefix_node, info->pathname,
+                                          ACPI_NS_NO_UPSEARCH,
+                                          &info->resolved_node);
+                if (ACPI_FAILURE(status)) {
+                        return_ACPI_STATUS(status);
+                }
         }
 
         /*
diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index 224c30053401..8a52916148cb 100644
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -76,19 +76,7 @@ static acpi_status
 acpi_ns_check_reference(struct acpi_predefined_data *data,
                         union acpi_operand_object *return_object);
 
-static void acpi_ns_get_expected_types(char *buffer, u32 expected_btypes);
-
-/*
- * Names for the types that can be returned by the predefined objects.
- * Used for warning messages. Must be in the same order as the ACPI_RTYPEs
- */
-static const char *acpi_rtype_names[] = {
-        "/Integer",
-        "/String",
-        "/Buffer",
-        "/Package",
-        "/Reference",
-};
+static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object);
 
 /*******************************************************************************
  *
@@ -112,7 +100,6 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
                                acpi_status return_status,
                                union acpi_operand_object **return_object_ptr)
 {
-        union acpi_operand_object *return_object = *return_object_ptr;
         acpi_status status = AE_OK;
         const union acpi_predefined_info *predefined;
         char *pathname;
@@ -120,7 +107,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
 
         /* Match the name for this method/object against the predefined list */
 
-        predefined = acpi_ns_check_for_predefined_name(node);
+        predefined = acpi_ut_match_predefined_method(node->name.ascii);
 
         /* Get the full pathname to the object, for use in warning messages */
 
@@ -152,25 +139,6 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
         }
 
         /*
-         * If there is no return value, check if we require a return value for
-         * this predefined name. Either one return value is expected, or none,
-         * for both methods and other objects.
-         *
-         * Exit now if there is no return object. Warning if one was expected.
-         */
-        if (!return_object) {
-                if ((predefined->info.expected_btypes) &&
-                    (!(predefined->info.expected_btypes & ACPI_RTYPE_NONE))) {
-                        ACPI_WARN_PREDEFINED((AE_INFO, pathname,
-                                              ACPI_WARN_ALWAYS,
-                                              "Missing expected return value"));
-
-                        status = AE_AML_NO_RETURN_VALUE;
-                }
-                goto cleanup;
-        }
-
-        /*
          * Return value validation and possible repair.
          *
          * 1) Don't perform return value validation/repair if this feature
@@ -310,8 +278,10 @@ acpi_ns_check_parameter_count(char *pathname,
          * Validate the user-supplied parameter count.
          * Allow two different legal argument counts (_SCP, etc.)
          */
-        required_params_current = predefined->info.param_count & 0x0F;
-        required_params_old = predefined->info.param_count >> 4;
+        required_params_current =
+            predefined->info.argument_list & METHOD_ARG_MASK;
+        required_params_old =
+            predefined->info.argument_list >> METHOD_ARG_BIT_WIDTH;
 
         if (user_param_count != ACPI_UINT32_MAX) {
                 if ((user_param_count != required_params_current) &&
@@ -340,52 +310,6 @@ acpi_ns_check_parameter_count(char *pathname,
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ns_check_for_predefined_name
- *
- * PARAMETERS:  node            - Namespace node for the method/object
- *
- * RETURN:      Pointer to entry in predefined table. NULL indicates not found.
- *
- * DESCRIPTION: Check an object name against the predefined object list.
- *
- ******************************************************************************/
-
-const union acpi_predefined_info *acpi_ns_check_for_predefined_name(struct
-                                                                    acpi_namespace_node
-                                                                    *node)
-{
-        const union acpi_predefined_info *this_name;
-
-        /* Quick check for a predefined name, first character must be underscore */
-
-        if (node->name.ascii[0] != '_') {
-                return (NULL);
-        }
-
-        /* Search info table for a predefined method/object name */
-
-        this_name = predefined_names;
-        while (this_name->info.name[0]) {
-                if (ACPI_COMPARE_NAME(node->name.ascii, this_name->info.name)) {
-                        return (this_name);
-                }
-
-                /*
-                 * Skip next entry in the table if this name returns a Package
-                 * (next entry contains the package info)
-                 */
-                if (this_name->info.expected_btypes & ACPI_RTYPE_PACKAGE) {
-                        this_name++;
-                }
-
-                this_name++;
-        }
-
-        return (NULL);          /* Not found */
-}
-
-/*******************************************************************************
- *
  * FUNCTION:    acpi_ns_check_object_type
  *
  * PARAMETERS:  data            - Pointer to validation data structure
@@ -410,28 +334,12 @@ acpi_ns_check_object_type(struct acpi_predefined_data *data,
 {
         union acpi_operand_object *return_object = *return_object_ptr;
         acpi_status status = AE_OK;
-        u32 return_btype;
         char type_buffer[48];   /* Room for 5 types */
 
-        /*
-         * If we get a NULL return_object here, it is a NULL package element.
-         * Since all extraneous NULL package elements were removed earlier by a
-         * call to acpi_ns_remove_null_elements, this is an unexpected NULL element.
-         * We will attempt to repair it.
-         */
-        if (!return_object) {
-                status = acpi_ns_repair_null_element(data, expected_btypes,
-                                                     package_index,
-                                                     return_object_ptr);
-                if (ACPI_SUCCESS(status)) {
-                        return (AE_OK); /* Repair was successful */
-                }
-                goto type_error_exit;
-        }
-
         /* A Namespace node should not get here, but make sure */
 
-        if (ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
+        if (return_object &&
+            ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
                 ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
                                       "Invalid return type - Found a Namespace node [%4.4s] type %s",
                                       return_object->node.name.ascii,
@@ -448,59 +356,31 @@ acpi_ns_check_object_type(struct acpi_predefined_data *data,
          * from all of the predefined names (including elements of returned
          * packages)
          */
-        switch (return_object->common.type) {
-        case ACPI_TYPE_INTEGER:
-                return_btype = ACPI_RTYPE_INTEGER;
-                break;
-
-        case ACPI_TYPE_BUFFER:
-                return_btype = ACPI_RTYPE_BUFFER;
-                break;
-
-        case ACPI_TYPE_STRING:
-                return_btype = ACPI_RTYPE_STRING;
-                break;
+        data->return_btype = acpi_ns_get_bitmapped_type(return_object);
+        if (data->return_btype == ACPI_RTYPE_ANY) {
 
-        case ACPI_TYPE_PACKAGE:
-                return_btype = ACPI_RTYPE_PACKAGE;
-                break;
-
-        case ACPI_TYPE_LOCAL_REFERENCE:
-                return_btype = ACPI_RTYPE_REFERENCE;
-                break;
-
-        default:
                 /* Not one of the supported objects, must be incorrect */
-
                 goto type_error_exit;
         }
 
-        /* Is the object one of the expected types? */
-
-        if (return_btype & expected_btypes) {
-
-                /* For reference objects, check that the reference type is correct */
-
-                if (return_object->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
-                        status = acpi_ns_check_reference(data, return_object);
-                }
+        /* For reference objects, check that the reference type is correct */
 
+        if ((data->return_btype & expected_btypes) == ACPI_RTYPE_REFERENCE) {
+                status = acpi_ns_check_reference(data, return_object);
                 return (status);
         }
 
-        /* Type mismatch -- attempt repair of the returned object */
+        /* Attempt simple repair of the returned object if necessary */
 
-        status = acpi_ns_repair_object(data, expected_btypes,
+        status = acpi_ns_simple_repair(data, expected_btypes,
                                        package_index, return_object_ptr);
-        if (ACPI_SUCCESS(status)) {
-                return (AE_OK); /* Repair was successful */
-        }
+        return (status);
 
       type_error_exit:
 
         /* Create a string with all expected types for this predefined object */
 
-        acpi_ns_get_expected_types(type_buffer, expected_btypes);
+        acpi_ut_get_expected_return_types(type_buffer, expected_btypes);
 
         if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
                 ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
@@ -558,36 +438,55 @@ acpi_ns_check_reference(struct acpi_predefined_data *data,
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ns_get_expected_types
+ * FUNCTION:    acpi_ns_get_bitmapped_type
  *
- * PARAMETERS:  buffer          - Pointer to where the string is returned
- *              expected_btypes - Bitmap of expected return type(s)
+ * PARAMETERS:  return_object   - Object returned from method/obj evaluation
  *
- * RETURN:      Buffer is populated with type names.
+ * RETURN:      Object return type. ACPI_RTYPE_ANY indicates that the object
+ *              type is not supported. ACPI_RTYPE_NONE indicates that no
+ *              object was returned (return_object is NULL).
  *
- * DESCRIPTION: Translate the expected types bitmap into a string of ascii
- *              names of expected types, for use in warning messages.
+ * DESCRIPTION: Convert object type into a bitmapped object return type.
  *
  ******************************************************************************/
 
-static void acpi_ns_get_expected_types(char *buffer, u32 expected_btypes)
+static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object)
 {
-        u32 this_rtype;
-        u32 i;
-        u32 j;
+        u32 return_btype;
 
-        j = 1;
-        buffer[0] = 0;
-        this_rtype = ACPI_RTYPE_INTEGER;
+        if (!return_object) {
+                return (ACPI_RTYPE_NONE);
+        }
 
-        for (i = 0; i < ACPI_NUM_RTYPES; i++) {
+        /* Map acpi_object_type to internal bitmapped type */
 
-                /* If one of the expected types, concatenate the name of this type */
+        switch (return_object->common.type) {
+        case ACPI_TYPE_INTEGER:
+                return_btype = ACPI_RTYPE_INTEGER;
+                break;
 
-                if (expected_btypes & this_rtype) {
-                        ACPI_STRCAT(buffer, &acpi_rtype_names[i][j]);
-                        j = 0;  /* Use name separator from now on */
-                }
-                this_rtype <<= 1;       /* Next Rtype */
+        case ACPI_TYPE_BUFFER:
+                return_btype = ACPI_RTYPE_BUFFER;
+                break;
+
+        case ACPI_TYPE_STRING:
+                return_btype = ACPI_RTYPE_STRING;
+                break;
+
+        case ACPI_TYPE_PACKAGE:
+                return_btype = ACPI_RTYPE_PACKAGE;
+                break;
+
+        case ACPI_TYPE_LOCAL_REFERENCE:
+                return_btype = ACPI_RTYPE_REFERENCE;
+                break;
+
+        default:
+                /* Not one of the supported objects, must be incorrect */
+
+                return_btype = ACPI_RTYPE_ANY;
+                break;
         }
+
+        return (return_btype);
 }
diff --git a/drivers/acpi/acpica/nsprepkg.c b/drivers/acpi/acpica/nsprepkg.c
index a40155467d2e..77cdd539de16 100644
--- a/drivers/acpi/acpica/nsprepkg.c
+++ b/drivers/acpi/acpica/nsprepkg.c
@@ -112,9 +112,15 @@ acpi_ns_check_package(struct acpi_predefined_data *data,
         elements = return_object->package.elements;
         count = return_object->package.count;
 
-        /* The package must have at least one element, else invalid */
-
+        /*
+         * Most packages must have at least one element. The only exception
+         * is the variable-length package (ACPI_PTYPE1_VAR).
+         */
         if (!count) {
+                if (package->ret_info.type == ACPI_PTYPE1_VAR) {
+                        return (AE_OK);
+                }
+
                 ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
                                       "Return Package has no elements (empty)"));
 
diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c
index 9e833353c06a..18f02e4ece01 100644
--- a/drivers/acpi/acpica/nsrepair.c
+++ b/drivers/acpi/acpica/nsrepair.c
@@ -46,6 +46,7 @@
 #include "acnamesp.h"
 #include "acinterp.h"
 #include "acpredef.h"
+#include "amlresrc.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsrepair")
@@ -71,6 +72,11 @@ ACPI_MODULE_NAME("nsrepair")
  * Buffer  -> String
  * Buffer  -> Package of Integers
  * Package -> Package of one Package
+ *
+ * Additional conversions that are available:
+ *  Convert a null return or zero return value to an end_tag descriptor
+ *  Convert an ASCII string to a Unicode buffer
+ *
  * An incorrect standalone object is wrapped with required outer package
  *
  * Additional possible repairs:
@@ -78,21 +84,51 @@ ACPI_MODULE_NAME("nsrepair")
  *
  ******************************************************************************/
 /* Local prototypes */
-static acpi_status
-acpi_ns_convert_to_integer(union acpi_operand_object *original_object,
-                           union acpi_operand_object **return_object);
-
-static acpi_status
-acpi_ns_convert_to_string(union acpi_operand_object *original_object,
-                          union acpi_operand_object **return_object);
+static const struct acpi_simple_repair_info *acpi_ns_match_simple_repair(struct
+                                                                         acpi_namespace_node
+                                                                         *node,
+                                                                         u32
+                                                                         return_btype,
+                                                                         u32
+                                                                         package_index);
 
-static acpi_status
-acpi_ns_convert_to_buffer(union acpi_operand_object *original_object,
-                          union acpi_operand_object **return_object);
+/*
+ * Special but simple repairs for some names.
+ *
+ * 2nd argument: Unexpected types that can be repaired
+ */
+static const struct acpi_simple_repair_info acpi_object_repair_info[] = {
+        /* Resource descriptor conversions */
+
+        {"_CRS",
+         ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER |
+         ACPI_RTYPE_NONE,
+         ACPI_NOT_PACKAGE_ELEMENT,
+         acpi_ns_convert_to_resource},
+        {"_DMA",
+         ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER |
+         ACPI_RTYPE_NONE,
+         ACPI_NOT_PACKAGE_ELEMENT,
+         acpi_ns_convert_to_resource},
+        {"_PRS",
+         ACPI_RTYPE_INTEGER | ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER |
+         ACPI_RTYPE_NONE,
+         ACPI_NOT_PACKAGE_ELEMENT,
+         acpi_ns_convert_to_resource},
+
+        /* Unicode conversions */
+
+        {"_MLS", ACPI_RTYPE_STRING, 1,
+         acpi_ns_convert_to_unicode},
+        {"_STR", ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER,
+         ACPI_NOT_PACKAGE_ELEMENT,
+         acpi_ns_convert_to_unicode},
+        {{0, 0, 0, 0}, 0, 0, NULL}      /* Table terminator */
+};
 
 /*******************************************************************************
  *
- * FUNCTION:    acpi_ns_repair_object
+ * FUNCTION:    acpi_ns_simple_repair
  *
  * PARAMETERS:  data                - Pointer to validation data structure
  *              expected_btypes     - Object types expected
@@ -110,16 +146,54 @@ acpi_ns_convert_to_buffer(union acpi_operand_object *original_object,
  ******************************************************************************/
 
 acpi_status
-acpi_ns_repair_object(struct acpi_predefined_data *data,
+acpi_ns_simple_repair(struct acpi_predefined_data *data,
                       u32 expected_btypes,
                       u32 package_index,
                       union acpi_operand_object **return_object_ptr)
 {
         union acpi_operand_object *return_object = *return_object_ptr;
-        union acpi_operand_object *new_object;
+        union acpi_operand_object *new_object = NULL;
         acpi_status status;
+        const struct acpi_simple_repair_info *predefined;
+
+        ACPI_FUNCTION_NAME(ns_simple_repair);
+
+        /*
+         * Special repairs for certain names that are in the repair table.
+         * Check if this name is in the list of repairable names.
+         */
+        predefined = acpi_ns_match_simple_repair(data->node,
+                                                 data->return_btype,
+                                                 package_index);
+        if (predefined) {
+                if (!return_object) {
+                        ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
+                                              ACPI_WARN_ALWAYS,
+                                              "Missing expected return value"));
+                }
+
+                status =
+                    predefined->object_converter(return_object, &new_object);
+                if (ACPI_FAILURE(status)) {
+
+                        /* A fatal error occurred during a conversion */
+
+                        ACPI_EXCEPTION((AE_INFO, status,
+                                        "During return object analysis"));
+                        return (status);
+                }
+                if (new_object) {
+                        goto object_repaired;
+                }
+        }
 
-        ACPI_FUNCTION_NAME(ns_repair_object);
+        /*
+         * Do not perform simple object repair unless the return type is not
+         * expected.
+         */
+        if (data->return_btype & expected_btypes) {
+                return (AE_OK);
+        }
 
         /*
          * At this point, we know that the type of the returned object was not
@@ -127,6 +201,24 @@ acpi_ns_repair_object(struct acpi_predefined_data *data,
          * repair the object by converting it to one of the expected object
          * types for this predefined name.
          */
+
+        /*
+         * If there is no return value, check if we require a return value for
+         * this predefined name. Either one return value is expected, or none,
+         * for both methods and other objects.
+         *
+         * Exit now if there is no return object. Warning if one was expected.
+         */
+        if (!return_object) {
+                if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) {
+                        ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
+                                              ACPI_WARN_ALWAYS,
+                                              "Missing expected return value"));
+
+                        return (AE_AML_NO_RETURN_VALUE);
+                }
+        }
+
         if (expected_btypes & ACPI_RTYPE_INTEGER) {
                 status = acpi_ns_convert_to_integer(return_object, &new_object);
                 if (ACPI_SUCCESS(status)) {
@@ -216,254 +308,51 @@ acpi_ns_repair_object(struct acpi_predefined_data *data,
         return (AE_OK);
 }
 
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_convert_to_integer
- *
- * PARAMETERS:  original_object     - Object to be converted
- *              return_object       - Where the new converted object is returned
- *
- * RETURN:      Status. AE_OK if conversion was successful.
- *
- * DESCRIPTION: Attempt to convert a String/Buffer object to an Integer.
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ns_convert_to_integer(union acpi_operand_object *original_object,
-                           union acpi_operand_object **return_object)
-{
-        union acpi_operand_object *new_object;
-        acpi_status status;
-        u64 value = 0;
-        u32 i;
-
-        switch (original_object->common.type) {
-        case ACPI_TYPE_STRING:
-
-                /* String-to-Integer conversion */
-
-                status = acpi_ut_strtoul64(original_object->string.pointer,
-                                           ACPI_ANY_BASE, &value);
-                if (ACPI_FAILURE(status)) {
-                        return (status);
-                }
-                break;
-
-        case ACPI_TYPE_BUFFER:
-
-                /* Buffer-to-Integer conversion. Max buffer size is 64 bits. */
-
-                if (original_object->buffer.length > 8) {
-                        return (AE_AML_OPERAND_TYPE);
-                }
-
-                /* Extract each buffer byte to create the integer */
-
-                for (i = 0; i < original_object->buffer.length; i++) {
-                        value |=
-                            ((u64) original_object->buffer.
-                             pointer[i] << (i * 8));
-                }
-                break;
-
-        default:
-                return (AE_AML_OPERAND_TYPE);
-        }
-
-        new_object = acpi_ut_create_integer_object(value);
-        if (!new_object) {
-                return (AE_NO_MEMORY);
-        }
-
-        *return_object = new_object;
-        return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_ns_convert_to_string
- *
- * PARAMETERS:  original_object     - Object to be converted
- *              return_object       - Where the new converted object is returned
- *
- * RETURN:      Status. AE_OK if conversion was successful.
- *
- * DESCRIPTION: Attempt to convert a Integer/Buffer object to a String.
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ns_convert_to_string(union acpi_operand_object *original_object,
-                          union acpi_operand_object **return_object)
-{
-        union acpi_operand_object *new_object;
-        acpi_size length;
-        acpi_status status;
-
-        switch (original_object->common.type) {
-        case ACPI_TYPE_INTEGER:
-                /*
-                 * Integer-to-String conversion. Commonly, convert
-                 * an integer of value 0 to a NULL string. The last element of
-                 * _BIF and _BIX packages occasionally need this fix.
-                 */
-                if (original_object->integer.value == 0) {
-
-                        /* Allocate a new NULL string object */
-
-                        new_object = acpi_ut_create_string_object(0);
-                        if (!new_object) {
-                                return (AE_NO_MEMORY);
-                        }
-                } else {
-                        status =
-                            acpi_ex_convert_to_string(original_object,
-                                                      &new_object,
-                                                      ACPI_IMPLICIT_CONVERT_HEX);
-                        if (ACPI_FAILURE(status)) {
-                                return (status);
-                        }
-                }
-                break;
-
-        case ACPI_TYPE_BUFFER:
-                /*
-                 * Buffer-to-String conversion. Use a to_string
-                 * conversion, no transform performed on the buffer data. The best
-                 * example of this is the _BIF method, where the string data from
-                 * the battery is often (incorrectly) returned as buffer object(s).
-                 */
-                length = 0;
-                while ((length < original_object->buffer.length) &&
-                       (original_object->buffer.pointer[length])) {
-                        length++;
-                }
-
-                /* Allocate a new string object */
-
-                new_object = acpi_ut_create_string_object(length);
-                if (!new_object) {
-                        return (AE_NO_MEMORY);
-                }
-
-                /*
-                 * Copy the raw buffer data with no transform. String is already NULL
-                 * terminated at Length+1.
-                 */
-                ACPI_MEMCPY(new_object->string.pointer,
-                            original_object->buffer.pointer, length);
-                break;
-
-        default:
-                return (AE_AML_OPERAND_TYPE);
-        }
-
-        *return_object = new_object;
-        return (AE_OK);
-}
-
-/*******************************************************************************
+/******************************************************************************
  *
- * FUNCTION:    acpi_ns_convert_to_buffer
+ * FUNCTION:    acpi_ns_match_simple_repair
  *
- * PARAMETERS:  original_object     - Object to be converted
- *              return_object       - Where the new converted object is returned
+ * PARAMETERS:  node                - Namespace node for the method/object
+ *              return_btype        - Object type that was returned
+ *              package_index       - Index of object within parent package (if
+ *                                    applicable - ACPI_NOT_PACKAGE_ELEMENT
+ *                                    otherwise)
  *
- * RETURN:      Status. AE_OK if conversion was successful.
+ * RETURN:      Pointer to entry in repair table. NULL indicates not found.
  *
- * DESCRIPTION: Attempt to convert a Integer/String/Package object to a Buffer.
+ * DESCRIPTION: Check an object name against the repairable object list.
  *
- ******************************************************************************/
+ *****************************************************************************/
 
-static acpi_status
-acpi_ns_convert_to_buffer(union acpi_operand_object *original_object,
-                          union acpi_operand_object **return_object)
+static const struct acpi_simple_repair_info *acpi_ns_match_simple_repair(struct
+                                                                         acpi_namespace_node
+                                                                         *node,
+                                                                         u32
+                                                                         return_btype,
+                                                                         u32
+                                                                         package_index)
 {
-        union acpi_operand_object *new_object;
-        acpi_status status;
-        union acpi_operand_object **elements;
-        u32 *dword_buffer;
-        u32 count;
-        u32 i;
+        const struct acpi_simple_repair_info *this_name;
 
-        switch (original_object->common.type) {
-        case ACPI_TYPE_INTEGER:
-                /*
-                 * Integer-to-Buffer conversion.
-                 * Convert the Integer to a packed-byte buffer. _MAT and other
-                 * objects need this sometimes, if a read has been performed on a
-                 * Field object that is less than or equal to the global integer
-                 * size (32 or 64 bits).
-                 */
-                status =
-                    acpi_ex_convert_to_buffer(original_object, &new_object);
-                if (ACPI_FAILURE(status)) {
-                        return (status);
-                }
-                break;
+        /* Search info table for a repairable predefined method/object name */
 
-        case ACPI_TYPE_STRING:
+        this_name = acpi_object_repair_info;
+        while (this_name->object_converter) {
+                if (ACPI_COMPARE_NAME(node->name.ascii, this_name->name)) {
 
-                /* String-to-Buffer conversion. Simple data copy */
-
-                new_object =
-                    acpi_ut_create_buffer_object(original_object->string.
-                                                 length);
-                if (!new_object) {
-                        return (AE_NO_MEMORY);
-                }
+                        /* Check if we can actually repair this name/type combination */
 
-                ACPI_MEMCPY(new_object->buffer.pointer,
-                            original_object->string.pointer,
-                            original_object->string.length);
-                break;
-
-        case ACPI_TYPE_PACKAGE:
-                /*
-                 * This case is often seen for predefined names that must return a
-                 * Buffer object with multiple DWORD integers within. For example,
-                 * _FDE and _GTM. The Package can be converted to a Buffer.
-                 */
-
-                /* All elements of the Package must be integers */
-
-                elements = original_object->package.elements;
-                count = original_object->package.count;
-
-                for (i = 0; i < count; i++) {
-                        if ((!*elements) ||
-                            ((*elements)->common.type != ACPI_TYPE_INTEGER)) {
-                                return (AE_AML_OPERAND_TYPE);
+                        if ((return_btype & this_name->unexpected_btypes) &&
+                            (package_index == this_name->package_index)) {
+                                return (this_name);
                         }
-                        elements++;
-                }
-
-                /* Create the new buffer object to replace the Package */
 
-                new_object = acpi_ut_create_buffer_object(ACPI_MUL_4(count));
-                if (!new_object) {
-                        return (AE_NO_MEMORY);
+                        return (NULL);
                 }
-
-                /* Copy the package elements (integers) to the buffer as DWORDs */
-
-                elements = original_object->package.elements;
-                dword_buffer = ACPI_CAST_PTR(u32, new_object->buffer.pointer);
-
-                for (i = 0; i < count; i++) {
-                        *dword_buffer = (u32) (*elements)->integer.value;
-                        dword_buffer++;
-                        elements++;
-                }
-                break;
-
-        default:
-                return (AE_AML_OPERAND_TYPE);
+                this_name++;
         }
 
-        *return_object = new_object;
-        return (AE_OK);
+        return (NULL);          /* Name was not found in the repair table */
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
index ba4d98287c6a..149e9b9c2c1b 100644
--- a/drivers/acpi/acpica/nsrepair2.c
+++ b/drivers/acpi/acpica/nsrepair2.c
@@ -66,9 +66,9 @@ typedef struct acpi_repair_info {
 
 /* Local prototypes */
 
-static const struct acpi_repair_info *acpi_ns_match_repairable_name(struct
-                                                                    acpi_namespace_node
-                                                                    *node);
+static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct
+                                                                   acpi_namespace_node
+                                                                   *node);
 
 static acpi_status
 acpi_ns_repair_ALR(struct acpi_predefined_data *data,
@@ -175,7 +175,7 @@ acpi_ns_complex_repairs(struct acpi_predefined_data *data,
 
         /* Check if this name is in the list of repairable names */
 
-        predefined = acpi_ns_match_repairable_name(node);
+        predefined = acpi_ns_match_complex_repair(node);
         if (!predefined) {
                 return (validate_status);
         }
@@ -186,7 +186,7 @@ acpi_ns_complex_repairs(struct acpi_predefined_data *data,
 
 /******************************************************************************
  *
- * FUNCTION:    acpi_ns_match_repairable_name
+ * FUNCTION:    acpi_ns_match_complex_repair
  *
  * PARAMETERS:  node                - Namespace node for the method/object
  *
@@ -196,9 +196,9 @@ acpi_ns_complex_repairs(struct acpi_predefined_data *data,
  *
  *****************************************************************************/
 
-static const struct acpi_repair_info *acpi_ns_match_repairable_name(struct
-                                                                    acpi_namespace_node
-                                                                    *node)
+static const struct acpi_repair_info *acpi_ns_match_complex_repair(struct
+                                                                   acpi_namespace_node
+                                                                   *node)
 {
         const struct acpi_repair_info *this_name;
 
diff --git a/drivers/acpi/acpica/nsutils.c b/drivers/acpi/acpica/nsutils.c
index 686420df684f..2808586fad30 100644
--- a/drivers/acpi/acpica/nsutils.c
+++ b/drivers/acpi/acpica/nsutils.c
@@ -112,10 +112,10 @@ acpi_object_type acpi_ns_get_type(struct acpi_namespace_node * node)
 
         if (!node) {
                 ACPI_WARNING((AE_INFO, "Null Node parameter"));
-                return_VALUE(ACPI_TYPE_ANY);
+                return_UINT8(ACPI_TYPE_ANY);
         }
 
-        return_VALUE(node->type);
+        return_UINT8(node->type);
 }
 
 /*******************************************************************************
@@ -140,10 +140,10 @@ u32 acpi_ns_local(acpi_object_type type)
                 /* Type code out of range  */
 
                 ACPI_WARNING((AE_INFO, "Invalid Object Type 0x%X", type));
-                return_VALUE(ACPI_NS_NORMAL);
+                return_UINT32(ACPI_NS_NORMAL);
         }
 
-        return_VALUE(acpi_gbl_ns_properties[type] & ACPI_NS_LOCAL);
+        return_UINT32(acpi_gbl_ns_properties[type] & ACPI_NS_LOCAL);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/psargs.c b/drivers/acpi/acpica/psargs.c
index f51308cdbc65..9f25a3d4e992 100644
--- a/drivers/acpi/acpica/psargs.c
+++ b/drivers/acpi/acpica/psargs.c
@@ -108,7 +108,7 @@ acpi_ps_get_next_package_length(struct acpi_parse_state *parser_state)
         /* Byte 0 is a special case, either bits [0:3] or [0:5] are used */
 
         package_length |= (aml[0] & byte_zero_mask);
-        return_VALUE(package_length);
+        return_UINT32(package_length);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c
index 7816d4eef04e..72077fa1eea5 100644
--- a/drivers/acpi/acpica/rscalc.c
+++ b/drivers/acpi/acpica/rscalc.c
@@ -202,6 +202,12 @@ acpi_rs_get_aml_length(struct acpi_resource * resource, acpi_size * size_needed)
                         return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
                 }
 
+                /* Sanity check the length. It must not be zero, or we loop forever */
+
+                if (!resource->length) {
+                        return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
+                }
+
                 /* Get the base size of the (external stream) resource descriptor */
 
                 total_size = acpi_gbl_aml_resource_sizes[resource->type];
diff --git a/drivers/acpi/acpica/rsdump.c b/drivers/acpi/acpica/rsdump.c
index cab51445189d..b5fc0db2e87b 100644
--- a/drivers/acpi/acpica/rsdump.c
+++ b/drivers/acpi/acpica/rsdump.c
@@ -385,6 +385,14 @@ void acpi_rs_dump_resource_list(struct acpi_resource *resource_list)
                         return;
                 }
 
+                /* Sanity check the length. It must not be zero, or we loop forever */
+
+                if (!resource_list->length) {
+                        acpi_os_printf
+                            ("Invalid zero length descriptor in resource list\n");
+                        return;
+                }
+
                 /* Dump the resource descriptor */
 
                 if (type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
diff --git a/drivers/acpi/acpica/rslist.c b/drivers/acpi/acpica/rslist.c
index ee2e206fc6c8..6053aa182093 100644
--- a/drivers/acpi/acpica/rslist.c
+++ b/drivers/acpi/acpica/rslist.c
@@ -178,6 +178,14 @@ acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
                         return_ACPI_STATUS(AE_BAD_DATA);
                 }
 
+                /* Sanity check the length. It must not be zero, or we loop forever */
+
+                if (!resource->length) {
+                        ACPI_ERROR((AE_INFO,
+                                    "Invalid zero length descriptor in resource list\n"));
+                        return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
+                }
+
                 /* Perform the conversion */
 
                 if (resource->type == ACPI_RESOURCE_TYPE_SERIAL_BUS) {
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
index 15d6eaef0e28..c0e5d2d3ce67 100644
--- a/drivers/acpi/acpica/rsxface.c
+++ b/drivers/acpi/acpica/rsxface.c
@@ -563,13 +563,19 @@ acpi_walk_resource_buffer(struct acpi_buffer * buffer,
 
         while (resource < resource_end) {
 
-                /* Sanity check the resource */
+                /* Sanity check the resource type */
 
                 if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
                         status = AE_AML_INVALID_RESOURCE_TYPE;
                         break;
                 }
 
+                /* Sanity check the length. It must not be zero, or we loop forever */
+
+                if (!resource->length) {
+                        return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
+                }
+
                 /* Invoke the user function, abort on any error returned */
 
                 status = user_function(resource, context);
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 74181bf181ec..33b00d22300a 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -559,8 +559,12 @@ static void acpi_tb_validate_fadt(void)
                 /*
                  * For each extended field, check for length mismatch between the
                  * legacy length field and the corresponding 64-bit X length field.
+                 * Note: If the legacy length field is > 0xFF bits, ignore this
+                 * check. (GPE registers can be larger than the 64-bit GAS structure
+                 * can accomodate, 0xFF bits).
                  */
                 if (address64->address &&
+                    (ACPI_MUL_8(length) <= ACPI_UINT8_MAX) &&
                     (address64->bit_width != ACPI_MUL_8(length))) {
                         ACPI_BIOS_WARNING((AE_INFO,
                                            "32/64X length mismatch in FADT/%s: %u/%u",
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index b35a5e6d653a..ad11162482ff 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * Module Name: tbxface - ACPI table oriented external interfaces
+ * Module Name: tbxface - ACPI table-oriented external interfaces
  *
  *****************************************************************************/
 
@@ -80,7 +80,7 @@ acpi_status acpi_allocate_root_table(u32 initial_table_count)
  *                                    array is dynamically allocated.
  *              initial_table_count - Size of initial_table_array, in number of
  *                                    struct acpi_table_desc structures
- *              allow_realloc       - Flag to tell Table Manager if resize of
+ *              allow_resize        - Flag to tell Table Manager if resize of
  *                                    pre-allocated array is allowed. Ignored
  *                                    if initial_table_array is NULL.
  *
@@ -107,8 +107,8 @@ acpi_initialize_tables(struct acpi_table_desc * initial_table_array,
         ACPI_FUNCTION_TRACE(acpi_initialize_tables);
 
         /*
-         * Set up the Root Table Array
-         * Allocate the table array if requested
+         * Setup the Root Table Array and allocate the table array
+         * if requested
          */
         if (!initial_table_array) {
                 status = acpi_allocate_root_table(initial_table_count);
@@ -305,9 +305,10 @@ ACPI_EXPORT_SYMBOL(acpi_unload_table_id)
  *              instance            - Which instance (for SSDTs)
  *              out_table           - Where the pointer to the table is returned
  *
- * RETURN:      Status and pointer to table
+ * RETURN:      Status and pointer to the requested table
  *
- * DESCRIPTION: Finds and verifies an ACPI table.
+ * DESCRIPTION: Finds and verifies an ACPI table. Table must be in the
+ *              RSDT/XSDT.
  *
  ******************************************************************************/
 acpi_status
@@ -375,9 +376,10 @@ ACPI_EXPORT_SYMBOL(acpi_get_table)
  * PARAMETERS:  table_index         - Table index
  *              table               - Where the pointer to the table is returned
  *
- * RETURN:      Status and pointer to the table
+ * RETURN:      Status and pointer to the requested table
  *
- * DESCRIPTION: Obtain a table by an index into the global table list.
+ * DESCRIPTION: Obtain a table by an index into the global table list. Used
+ *              internally also.
  *
  ******************************************************************************/
 acpi_status
@@ -432,7 +434,7 @@ ACPI_EXPORT_SYMBOL(acpi_get_table_by_index)
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Install table event handler
+ * DESCRIPTION: Install a global table event handler.
  *
  ******************************************************************************/
 acpi_status
@@ -479,7 +481,7 @@ ACPI_EXPORT_SYMBOL(acpi_install_table_handler)
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Remove table event handler
+ * DESCRIPTION: Remove a table event handler
  *
  ******************************************************************************/
 acpi_status acpi_remove_table_handler(acpi_table_handler handler)
diff --git a/drivers/acpi/acpica/utaddress.c b/drivers/acpi/acpica/utaddress.c
index 698b9d385516..e0a2e2779c2e 100644
--- a/drivers/acpi/acpica/utaddress.c
+++ b/drivers/acpi/acpica/utaddress.c
@@ -214,7 +214,7 @@ acpi_ut_check_address_range(acpi_adr_space_type space_id,
 
         if ((space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY) &&
             (space_id != ACPI_ADR_SPACE_SYSTEM_IO)) {
-                return_VALUE(0);
+                return_UINT32(0);
         }
 
         range_info = acpi_gbl_address_range_list[space_id];
@@ -256,7 +256,7 @@ acpi_ut_check_address_range(acpi_adr_space_type space_id,
                 range_info = range_info->next;
         }
 
-        return_VALUE(overlap_count);
+        return_UINT32(overlap_count);
 }
 
 /*******************************************************************************
diff --git a/drivers/acpi/acpica/utcache.c b/drivers/acpi/acpica/utcache.c
index e0e8579deaac..a877a9647fd9 100644
--- a/drivers/acpi/acpica/utcache.c
+++ b/drivers/acpi/acpica/utcache.c
@@ -85,7 +85,6 @@ acpi_os_create_cache(char *cache_name,
         /* Populate the cache object and return it */
 
         ACPI_MEMSET(cache, 0, sizeof(struct acpi_memory_list));
-        cache->link_offset = 8;
         cache->list_name = cache_name;
         cache->object_size = object_size;
         cache->max_depth = max_depth;
@@ -108,7 +107,7 @@ acpi_os_create_cache(char *cache_name,
 
 acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
 {
-        char *next;
+        void *next;
         acpi_status status;
 
         ACPI_FUNCTION_ENTRY();
@@ -128,10 +127,7 @@ acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
 
                 /* Delete and unlink one cached state object */
 
-                next = *(ACPI_CAST_INDIRECT_PTR(char,
-                                                &(((char *)cache->
-                                                   list_head)[cache->
-                                                              link_offset])));
+                next = ACPI_GET_DESCRIPTOR_PTR(cache->list_head);
                 ACPI_FREE(cache->list_head);
 
                 cache->list_head = next;
@@ -221,10 +217,7 @@ acpi_os_release_object(struct acpi_memory_list * cache, void *object)
 
                 /* Put the object at the head of the cache list */
 
-                *(ACPI_CAST_INDIRECT_PTR(char,
-                                         &(((char *)object)[cache->
-                                                            link_offset]))) =
-                    cache->list_head;
+                ACPI_SET_DESCRIPTOR_PTR(object, cache->list_head);
                 cache->list_head = object;
                 cache->current_depth++;
 
@@ -272,10 +265,7 @@ void *acpi_os_acquire_object(struct acpi_memory_list *cache)
                 /* There is an object available, use it */
 
                 object = cache->list_head;
-                cache->list_head = *(ACPI_CAST_INDIRECT_PTR(char,
-                                                            &(((char *)
-                                                               object)[cache->
-                                                                       link_offset])));
+                cache->list_head = ACPI_GET_DESCRIPTOR_PTR(object);
 
                 cache->current_depth--;
 
diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index 2541de420249..29b930250b6f 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -359,19 +359,20 @@ void acpi_ut_delete_internal_object_list(union acpi_operand_object **obj_list)
  * FUNCTION:    acpi_ut_update_ref_count
  *
  * PARAMETERS:  object          - Object whose ref count is to be updated
- *              action          - What to do
+ *              action          - What to do (REF_INCREMENT or REF_DECREMENT)
  *
- * RETURN:      New ref count
+ * RETURN:      None. Sets new reference count within the object
  *
- * DESCRIPTION: Modify the ref count and return it.
+ * DESCRIPTION: Modify the reference count for an internal acpi object
  *
  ******************************************************************************/
 
 static void
 acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
 {
-        u16 count;
-        u16 new_count;
+        u16 original_count;
+        u16 new_count = 0;
+        acpi_cpu_flags lock_flags;
 
         ACPI_FUNCTION_NAME(ut_update_ref_count);
 
@@ -379,76 +380,79 @@ acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
                 return;
         }
 
-        count = object->common.reference_count;
-        new_count = count;
-
         /*
-         * Perform the reference count action (increment, decrement, force delete)
+         * Always get the reference count lock. Note: Interpreter and/or
+         * Namespace is not always locked when this function is called.
          */
+        lock_flags = acpi_os_acquire_lock(acpi_gbl_reference_count_lock);
+        original_count = object->common.reference_count;
+
+        /* Perform the reference count action (increment, decrement) */
+
         switch (action) {
         case REF_INCREMENT:
 
-                new_count++;
+                new_count = original_count + 1;
                 object->common.reference_count = new_count;
+                acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
+
+                /* The current reference count should never be zero here */
+
+                if (!original_count) {
+                        ACPI_WARNING((AE_INFO,
+                                      "Obj %p, Reference Count was zero before increment\n",
+                                      object));
+                }
 
                 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
-                                  "Obj %p Refs=%X, [Incremented]\n",
-                                  object, new_count));
+                                  "Obj %p Type %.2X Refs %.2X [Incremented]\n",
+                                  object, object->common.type, new_count));
                 break;
 
         case REF_DECREMENT:
 
-                if (count < 1) {
-                        ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
-                                          "Obj %p Refs=%X, can't decrement! (Set to 0)\n",
-                                          object, new_count));
-
-                        new_count = 0;
-                } else {
-                        new_count--;
+                /* The current reference count must be non-zero */
 
-                        ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
-                                          "Obj %p Refs=%X, [Decremented]\n",
-                                          object, new_count));
+                if (original_count) {
+                        new_count = original_count - 1;
+                        object->common.reference_count = new_count;
                 }
 
-                if (object->common.type == ACPI_TYPE_METHOD) {
-                        ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
-                                          "Method Obj %p Refs=%X, [Decremented]\n",
-                                          object, new_count));
-                }
+                acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
 
-                object->common.reference_count = new_count;
-                if (new_count == 0) {
-                        acpi_ut_delete_internal_obj(object);
+                if (!original_count) {
+                        ACPI_WARNING((AE_INFO,
+                                      "Obj %p, Reference Count is already zero, cannot decrement\n",
+                                      object));
                 }
-                break;
-
-        case REF_FORCE_DELETE:
 
                 ACPI_DEBUG_PRINT((ACPI_DB_ALLOCATIONS,
-                                  "Obj %p Refs=%X, Force delete! (Set to 0)\n",
-                                  object, count));
+                                  "Obj %p Type %.2X Refs %.2X [Decremented]\n",
+                                  object, object->common.type, new_count));
 
-                new_count = 0;
-                object->common.reference_count = new_count;
-                acpi_ut_delete_internal_obj(object);
+                /* Actually delete the object on a reference count of zero */
+
+                if (new_count == 0) {
+                        acpi_ut_delete_internal_obj(object);
+                }
                 break;
 
         default:
 
-                ACPI_ERROR((AE_INFO, "Unknown action (0x%X)", action));
-                break;
+                acpi_os_release_lock(acpi_gbl_reference_count_lock, lock_flags);
+                ACPI_ERROR((AE_INFO, "Unknown Reference Count action (0x%X)",
+                            action));
+                return;
         }
 
         /*
          * Sanity check the reference count, for debug purposes only.
          * (A deleted object will have a huge reference count)
          */
-        if (count > ACPI_MAX_REFERENCE_COUNT) {
+        if (new_count > ACPI_MAX_REFERENCE_COUNT) {
                 ACPI_WARNING((AE_INFO,
-                              "Large Reference Count (0x%X) in object %p",
-                              count, object));
+                              "Large Reference Count (0x%X) in object %p, Type=0x%.2X",
+                              new_count, object, object->common.type));
         }
 }
 
@@ -458,8 +462,7 @@ acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
  *
  * PARAMETERS:  object              - Increment ref count for this object
  *                                    and all sub-objects
- *              action              - Either REF_INCREMENT or REF_DECREMENT or
- *                                    REF_FORCE_DELETE
+ *              action              - Either REF_INCREMENT or REF_DECREMENT
  *
  * RETURN:      Status
  *
@@ -714,7 +717,6 @@ void acpi_ut_remove_reference(union acpi_operand_object *object)
         /*
          * Allow a NULL pointer to be passed in, just ignore it. This saves
          * each caller from having to check. Also, ignore NS nodes.
-         *
          */
         if (!object ||
             (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_NAMED)) {
diff --git a/drivers/acpi/acpica/utexcep.c b/drivers/acpi/acpica/utexcep.c
index a0ab7c02e87c..b543a144941a 100644
--- a/drivers/acpi/acpica/utexcep.c
+++ b/drivers/acpi/acpica/utexcep.c
@@ -64,7 +64,7 @@ ACPI_MODULE_NAME("utexcep")
  ******************************************************************************/
 const char *acpi_format_exception(acpi_status status)
 {
-        const char *exception = NULL;
+        const struct acpi_exception_info *exception;
 
         ACPI_FUNCTION_ENTRY();
 
@@ -76,10 +76,10 @@ const char *acpi_format_exception(acpi_status status)
                 ACPI_ERROR((AE_INFO,
                             "Unknown exception code: 0x%8.8X", status));
 
-                exception = "UNKNOWN_STATUS_CODE";
+                return ("UNKNOWN_STATUS_CODE");
         }
 
-        return (ACPI_CAST_PTR(const char, exception));
+        return (exception->name);
 }
 
 ACPI_EXPORT_SYMBOL(acpi_format_exception)
@@ -97,10 +97,10 @@ ACPI_EXPORT_SYMBOL(acpi_format_exception)
  *              an ASCII string.
  *
  ******************************************************************************/
-const char *acpi_ut_validate_exception(acpi_status status)
+const struct acpi_exception_info *acpi_ut_validate_exception(acpi_status status)
 {
         u32 sub_status;
-        const char *exception = NULL;
+        const struct acpi_exception_info *exception = NULL;
 
         ACPI_FUNCTION_ENTRY();
 
@@ -113,35 +113,35 @@ const char *acpi_ut_validate_exception(acpi_status status)
         case AE_CODE_ENVIRONMENTAL:
 
                 if (sub_status <= AE_CODE_ENV_MAX) {
-                        exception = acpi_gbl_exception_names_env[sub_status];
+                        exception = &acpi_gbl_exception_names_env[sub_status];
                 }
                 break;
 
         case AE_CODE_PROGRAMMER:
 
                 if (sub_status <= AE_CODE_PGM_MAX) {
-                        exception = acpi_gbl_exception_names_pgm[sub_status];
+                        exception = &acpi_gbl_exception_names_pgm[sub_status];
                 }
                 break;
 
         case AE_CODE_ACPI_TABLES:
 
                 if (sub_status <= AE_CODE_TBL_MAX) {
-                        exception = acpi_gbl_exception_names_tbl[sub_status];
+                        exception = &acpi_gbl_exception_names_tbl[sub_status];
                 }
                 break;
 
         case AE_CODE_AML:
 
                 if (sub_status <= AE_CODE_AML_MAX) {
-                        exception = acpi_gbl_exception_names_aml[sub_status];
+                        exception = &acpi_gbl_exception_names_aml[sub_status];
                 }
                 break;
 
         case AE_CODE_CONTROL:
 
                 if (sub_status <= AE_CODE_CTRL_MAX) {
-                        exception = acpi_gbl_exception_names_ctrl[sub_status];
+                        exception = &acpi_gbl_exception_names_ctrl[sub_status];
                 }
                 break;
 
@@ -149,5 +149,9 @@ const char *acpi_ut_validate_exception(acpi_status status)
                 break;
         }
 
-        return (ACPI_CAST_PTR(const char, exception));
+        if (!exception || !exception->name) {
+                return (NULL);
+        }
+
+        return (exception);
 }
diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c
index ffecf4b4f0dd..f736448a8606 100644
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -359,6 +359,8 @@ acpi_status acpi_ut_init_globals(void)
 
 #ifdef ACPI_DISASSEMBLER
         acpi_gbl_external_list = NULL;
+        acpi_gbl_num_external_methods = 0;
+        acpi_gbl_resolved_external_methods = 0;
 #endif
 
 #ifdef ACPI_DEBUG_OUTPUT
diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c
index 22feb99b8e35..08c323245584 100644
--- a/drivers/acpi/acpica/utmutex.c
+++ b/drivers/acpi/acpica/utmutex.c
@@ -81,7 +81,7 @@ acpi_status acpi_ut_mutex_initialize(void)
                 }
         }
 
-        /* Create the spinlocks for use at interrupt level */
+        /* Create the spinlocks for use at interrupt level or for speed */
 
         status = acpi_os_create_lock (&acpi_gbl_gpe_lock);
         if (ACPI_FAILURE (status)) {
@@ -93,7 +93,13 @@ acpi_status acpi_ut_mutex_initialize(void)
                 return_ACPI_STATUS (status);
         }
 
+        status = acpi_os_create_lock(&acpi_gbl_reference_count_lock);
+        if (ACPI_FAILURE(status)) {
+                return_ACPI_STATUS(status);
+        }
+
         /* Mutex for _OSI support */
+
         status = acpi_os_create_mutex(&acpi_gbl_osi_mutex);
         if (ACPI_FAILURE(status)) {
                 return_ACPI_STATUS(status);
@@ -136,6 +142,7 @@ void acpi_ut_mutex_terminate(void)
 
         acpi_os_delete_lock(acpi_gbl_gpe_lock);
         acpi_os_delete_lock(acpi_gbl_hardware_lock);
+        acpi_os_delete_lock(acpi_gbl_reference_count_lock);
 
         /* Delete the reader/writer lock */
 
diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
index 36a7d361d7cb..b15acebb96a1 100644
--- a/drivers/acpi/acpica/utosi.c
+++ b/drivers/acpi/acpica/utosi.c
@@ -108,9 +108,14 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = {
 
 acpi_status acpi_ut_initialize_interfaces(void)
 {
+        acpi_status status;
         u32 i;
 
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
+
         acpi_gbl_supported_interfaces = acpi_default_supported_interfaces;
 
         /* Link the static list of supported interfaces */
@@ -132,20 +137,24 @@ acpi_status acpi_ut_initialize_interfaces(void)
  *
  * PARAMETERS:  None
  *
- * RETURN:      None
+ * RETURN:      Status
  *
  * DESCRIPTION: Delete all interfaces in the global list. Sets
  *              acpi_gbl_supported_interfaces to NULL.
  *
  ******************************************************************************/
 
-void acpi_ut_interface_terminate(void)
+acpi_status acpi_ut_interface_terminate(void)
 {
+        acpi_status status;
         struct acpi_interface_info *next_interface;
 
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
-        next_interface = acpi_gbl_supported_interfaces;
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
 
+        next_interface = acpi_gbl_supported_interfaces;
         while (next_interface) {
                 acpi_gbl_supported_interfaces = next_interface->next;
 
@@ -160,6 +169,7 @@ void acpi_ut_interface_terminate(void)
         }
 
         acpi_os_release_mutex(acpi_gbl_osi_mutex);
+        return (AE_OK);
 }
 
 /*******************************************************************************
@@ -315,6 +325,7 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state * walk_state)
         union acpi_operand_object *return_desc;
         struct acpi_interface_info *interface_info;
         acpi_interface_handler interface_handler;
+        acpi_status status;
         u32 return_value;
 
         ACPI_FUNCTION_TRACE(ut_osi_implementation);
@@ -336,7 +347,10 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state * walk_state)
         /* Default return value is 0, NOT SUPPORTED */
 
         return_value = 0;
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
 
         /* Lookup the interface in the global _OSI list */
 
diff --git a/drivers/acpi/acpica/utpredef.c b/drivers/acpi/acpica/utpredef.c
new file mode 100644
index 000000000000..29459479148f
--- /dev/null
+++ b/drivers/acpi/acpica/utpredef.c
@@ -0,0 +1,399 @@
+/******************************************************************************
+ *
+ * Module Name: utpredef - support functions for predefined names
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acpredef.h"
+
+#define _COMPONENT          ACPI_UTILITIES
+ACPI_MODULE_NAME("utpredef")
+
+/*
+ * Names for the types that can be returned by the predefined objects.
+ * Used for warning messages. Must be in the same order as the ACPI_RTYPEs
+ */
+static const char *ut_rtype_names[] = {
+        "/Integer",
+        "/String",
+        "/Buffer",
+        "/Package",
+        "/Reference",
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_next_predefined_method
+ *
+ * PARAMETERS:  this_name           - Entry in the predefined method/name table
+ *
+ * RETURN:      Pointer to next entry in predefined table.
+ *
+ * DESCRIPTION: Get the next entry in the predefine method table. Handles the
+ *              cases where a package info entry follows a method name that
+ *              returns a package.
+ *
+ ******************************************************************************/
+
+const union acpi_predefined_info *acpi_ut_get_next_predefined_method(const union
+                                                                     acpi_predefined_info
+                                                                     *this_name)
+{
+
+        /*
+         * Skip next entry in the table if this name returns a Package
+         * (next entry contains the package info)
+         */
+        if ((this_name->info.expected_btypes & ACPI_RTYPE_PACKAGE) &&
+            (this_name->info.expected_btypes != ACPI_RTYPE_ALL)) {
+                this_name++;
+        }
+
+        this_name++;
+        return (this_name);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_match_predefined_method
+ *
+ * PARAMETERS:  name                - Name to find
+ *
+ * RETURN:      Pointer to entry in predefined table. NULL indicates not found.
+ *
+ * DESCRIPTION: Check an object name against the predefined object list.
+ *
+ ******************************************************************************/
+
+const union acpi_predefined_info *acpi_ut_match_predefined_method(char *name)
+{
+        const union acpi_predefined_info *this_name;
+
+        /* Quick check for a predefined name, first character must be underscore */
+
+        if (name[0] != '_') {
+                return (NULL);
+        }
+
+        /* Search info table for a predefined method/object name */
+
+        this_name = acpi_gbl_predefined_methods;
+        while (this_name->info.name[0]) {
+                if (ACPI_COMPARE_NAME(name, this_name->info.name)) {
+                        return (this_name);
+                }
+
+                this_name = acpi_ut_get_next_predefined_method(this_name);
+        }
+
+        return (NULL);          /* Not found */
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_expected_return_types
+ *
+ * PARAMETERS:  buffer              - Where the formatted string is returned
+ *              expected_Btypes     - Bitfield of expected data types
+ *
+ * RETURN:      Formatted string in Buffer.
+ *
+ * DESCRIPTION: Format the expected object types into a printable string.
+ *
+ ******************************************************************************/
+
+void acpi_ut_get_expected_return_types(char *buffer, u32 expected_btypes)
+{
+        u32 this_rtype;
+        u32 i;
+        u32 j;
+
+        j = 1;
+        buffer[0] = 0;
+        this_rtype = ACPI_RTYPE_INTEGER;
+
+        for (i = 0; i < ACPI_NUM_RTYPES; i++) {
+
+                /* If one of the expected types, concatenate the name of this type */
+
+                if (expected_btypes & this_rtype) {
+                        ACPI_STRCAT(buffer, &ut_rtype_names[i][j]);
+                        j = 0;  /* Use name separator from now on */
+                }
+
+                this_rtype <<= 1;       /* Next Rtype */
+        }
+}
+
+/*******************************************************************************
+ *
+ * The remaining functions are used by iASL and acpi_help only
+ *
+ ******************************************************************************/
+
+#if (defined ACPI_ASL_COMPILER || defined ACPI_HELP_APP)
+#include <stdio.h>
+#include <string.h>
+
+/* Local prototypes */
+
+static u32 acpi_ut_get_argument_types(char *buffer, u16 argument_types);
+
+/* Types that can be returned externally by a predefined name */
+
+static const char *ut_external_type_names[] =   /* Indexed by ACPI_TYPE_* */
+{
+        ", UNSUPPORTED-TYPE",
+        ", Integer",
+        ", String",
+        ", Buffer",
+        ", Package"
+};
+
+/* Bit widths for resource descriptor predefined names */
+
+static const char *ut_resource_type_names[] = {
+        "/1",
+        "/2",
+        "/3",
+        "/8",
+        "/16",
+        "/32",
+        "/64",
+        "/variable",
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_match_resource_name
+ *
+ * PARAMETERS:  name                - Name to find
+ *
+ * RETURN:      Pointer to entry in the resource table. NULL indicates not
+ *              found.
+ *
+ * DESCRIPTION: Check an object name against the predefined resource
+ *              descriptor object list.
+ *
+ ******************************************************************************/
+
+const union acpi_predefined_info *acpi_ut_match_resource_name(char *name)
+{
+        const union acpi_predefined_info *this_name;
+
+        /* Quick check for a predefined name, first character must be underscore */
+
+        if (name[0] != '_') {
+                return (NULL);
+        }
+
+        /* Search info table for a predefined method/object name */
+
+        this_name = acpi_gbl_resource_names;
+        while (this_name->info.name[0]) {
+                if (ACPI_COMPARE_NAME(name, this_name->info.name)) {
+                        return (this_name);
+                }
+
+                this_name++;
+        }
+
+        return (NULL);          /* Not found */
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_display_predefined_method
+ *
+ * PARAMETERS:  buffer              - Scratch buffer for this function
+ *              this_name           - Entry in the predefined method/name table
+ *              multi_line          - TRUE if output should be on >1 line
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Display information about a predefined method. Number and
+ *              type of the input arguments, and expected type(s) for the
+ *              return value, if any.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_display_predefined_method(char *buffer,
+                                  const union acpi_predefined_info *this_name,
+                                  u8 multi_line)
+{
+        u32 arg_count;
+
+        /*
+         * Get the argument count and the string buffer
+         * containing all argument types
+         */
+        arg_count = acpi_ut_get_argument_types(buffer,
+                                               this_name->info.argument_list);
+
+        if (multi_line) {
+                printf("      ");
+        }
+
+        printf("%4.4s    Requires %s%u argument%s",
+               this_name->info.name,
+               (this_name->info.argument_list & ARG_COUNT_IS_MINIMUM) ?
+               "(at least) " : "", arg_count, arg_count != 1 ? "s" : "");
+
+        /* Display the types for any arguments */
+
+        if (arg_count > 0) {
+                printf(" (%s)", buffer);
+        }
+
+        if (multi_line) {
+                printf("\n    ");
+        }
+
+        /* Get the return value type(s) allowed */
+
+        if (this_name->info.expected_btypes) {
+                acpi_ut_get_expected_return_types(buffer,
+                                                  this_name->info.
+                                                  expected_btypes);
+                printf("  Return value types: %s\n", buffer);
+        } else {
+                printf("  No return value\n");
+        }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_argument_types
+ *
+ * PARAMETERS:  buffer              - Where to return the formatted types
+ *              argument_types      - Types field for this method
+ *
+ * RETURN:      count - the number of arguments required for this method
+ *
+ * DESCRIPTION: Format the required data types for this method (Integer,
+ *              String, Buffer, or Package) and return the required argument
+ *              count.
+ *
+ ******************************************************************************/
+
+static u32 acpi_ut_get_argument_types(char *buffer, u16 argument_types)
+{
+        u16 this_argument_type;
+        u16 sub_index;
+        u16 arg_count;
+        u32 i;
+
+        *buffer = 0;
+        sub_index = 2;
+
+        /* First field in the types list is the count of args to follow */
+
+        arg_count = (argument_types & METHOD_ARG_MASK);
+        argument_types >>= METHOD_ARG_BIT_WIDTH;
+
+        if (arg_count > METHOD_PREDEF_ARGS_MAX) {
+                printf("**** Invalid argument count (%u) "
+                       "in predefined info structure\n", arg_count);
+                return (arg_count);
+        }
+
+        /* Get each argument from the list, convert to ascii, store to buffer */
+
+        for (i = 0; i < arg_count; i++) {
+                this_argument_type = (argument_types & METHOD_ARG_MASK);
+                if (!this_argument_type
+                    || (this_argument_type > METHOD_MAX_ARG_TYPE)) {
+                        printf("**** Invalid argument type (%u) "
+                               "in predefined info structure\n",
+                               this_argument_type);
+                        return (arg_count);
+                }
+
+                strcat(buffer,
+                       ut_external_type_names[this_argument_type] + sub_index);
+
+                /* Shift to next argument type field */
+
+                argument_types >>= METHOD_ARG_BIT_WIDTH;
+                sub_index = 0;
+        }
+
+        return (arg_count);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ut_get_resource_bit_width
+ *
+ * PARAMETERS:  buffer              - Where the formatted string is returned
+ *              types               - Bitfield of expected data types
+ *
+ * RETURN:      Count of return types. Formatted string in Buffer.
+ *
+ * DESCRIPTION: Format the resource bit widths into a printable string.
+ *
+ ******************************************************************************/
+
+u32 acpi_ut_get_resource_bit_width(char *buffer, u16 types)
+{
+        u32 i;
+        u16 sub_index;
+        u32 found;
+
+        *buffer = 0;
+        sub_index = 1;
+        found = 0;
+
+        for (i = 0; i < NUM_RESOURCE_WIDTHS; i++) {
+                if (types & 1) {
+                        strcat(buffer, &(ut_resource_type_names[i][sub_index]));
+                        sub_index = 0;
+                        found++;
+                }
+
+                types >>= 1;
+        }
+
+        return (found);
+}
+#endif
diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c
index 48efb446258c..6505774f223e 100644
--- a/drivers/acpi/acpica/utxface.c
+++ b/drivers/acpi/acpica/utxface.c
@@ -287,7 +287,10 @@ acpi_status acpi_install_interface(acpi_string interface_name)
                 return (AE_BAD_PARAMETER);
         }
 
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
 
         /* Check if the interface name is already in the global list */
 
@@ -336,7 +339,10 @@ acpi_status acpi_remove_interface(acpi_string interface_name)
                 return (AE_BAD_PARAMETER);
         }
 
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
 
         status = acpi_ut_remove_interface(interface_name);
 
@@ -362,9 +368,12 @@ ACPI_EXPORT_SYMBOL(acpi_remove_interface)
  ****************************************************************************/
 acpi_status acpi_install_interface_handler(acpi_interface_handler handler)
 {
-        acpi_status status = AE_OK;
+        acpi_status status;
 
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
 
         if (handler && acpi_gbl_interface_handler) {
                 status = AE_ALREADY_EXISTS;
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index c5cd5b5513e6..0cc384b72943 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -146,7 +146,7 @@ struct acpi_battery {
 
 #define to_acpi_battery(x) container_of(x, struct acpi_battery, bat)
 
-inline int acpi_battery_present(struct acpi_battery *battery)
+static inline int acpi_battery_present(struct acpi_battery *battery)
 {
         return battery->device->status.battery_present;
 }
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 01708a165368..292de3cab9cc 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -288,13 +288,12 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context)
         }
 out_success:
         context->ret.length = out_obj->buffer.length;
-        context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL);
+        context->ret.pointer = kmemdup(out_obj->buffer.pointer,
+                                       context->ret.length, GFP_KERNEL);
         if (!context->ret.pointer) {
                 status =  AE_NO_MEMORY;
                 goto out_kfree;
         }
-        memcpy(context->ret.pointer, out_obj->buffer.pointer,
-                context->ret.length);
         status =  AE_OK;
 
 out_kfree:
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 86c7d5445c38..92a659aa6396 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -33,6 +33,7 @@
 #include <linux/slab.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
+#include <acpi/button.h>
 
 #define PREFIX "ACPI: "
 
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 5523ba7d764d..e23151667655 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -1,12 +1,12 @@
 /*
- * acpi_container.c  - ACPI Generic Container Driver
- * ($Revision: )
+ * container.c  - ACPI Generic Container Driver
  *
  * Copyright (C) 2004 Anil S Keshavamurthy (anil.s.keshavamurthy@intel.com)
  * Copyright (C) 2004 Keiichiro Tokunaga (tokunaga.keiich@jp.fujitsu.com)
  * Copyright (C) 2004 Motoyuki Ito (motoyuki@soft.fujitsu.com)
- * Copyright (C) 2004 Intel Corp.
  * Copyright (C) 2004 FUJITSU LIMITED
+ * Copyright (C) 2004, 2013 Intel Corp.
+ * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  *
@@ -26,14 +26,11 @@
  *
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/types.h>
 #include <linux/acpi.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
+
+#include "internal.h"
+
+#include "internal.h"
 
 #define PREFIX "ACPI: "
 
@@ -50,141 +47,20 @@ static const struct acpi_device_id container_device_ids[] = {
 static int container_device_attach(struct acpi_device *device,
                                    const struct acpi_device_id *not_used)
 {
-        /*
-         * FIXME: This is necessary, so that acpi_eject_store() doesn't return
-         * -ENODEV for containers.
-         */
+        /* This is necessary for container hotplug to work. */
         return 1;
 }
 
-static struct acpi_scan_handler container_device_handler = {
+static struct acpi_scan_handler container_handler = {
         .ids = container_device_ids,
         .attach = container_device_attach,
+        .hotplug = {
+                .enabled = true,
+                .mode = AHM_CONTAINER,
+        },
 };
 
-static int is_device_present(acpi_handle handle)
-{
-        acpi_handle temp;
-        acpi_status status;
-        unsigned long long sta;
-
-
-        status = acpi_get_handle(handle, "_STA", &temp);
-        if (ACPI_FAILURE(status))
-                return 1;       /* _STA not found, assume device present */
-
-        status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-        if (ACPI_FAILURE(status))
-                return 0;       /* Firmware error */
-
-        return ((sta & ACPI_STA_DEVICE_PRESENT) == ACPI_STA_DEVICE_PRESENT);
-}
-
-static void container_notify_cb(acpi_handle handle, u32 type, void *context)
-{
-        struct acpi_device *device = NULL;
-        int result;
-        int present;
-        acpi_status status;
-        u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
-
-        acpi_scan_lock_acquire();
-
-        switch (type) {
-        case ACPI_NOTIFY_BUS_CHECK:
-                /* Fall through */
-        case ACPI_NOTIFY_DEVICE_CHECK:
-                pr_debug("Container driver received %s event\n",
-                       (type == ACPI_NOTIFY_BUS_CHECK) ?
-                       "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK");
-
-                present = is_device_present(handle);
-                status = acpi_bus_get_device(handle, &device);
-                if (!present) {
-                        if (ACPI_SUCCESS(status)) {
-                                /* device exist and this is a remove request */
-                                device->flags.eject_pending = 1;
-                                kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
-                                goto out;
-                        }
-                        break;
-                }
-
-                if (!ACPI_FAILURE(status) || device)
-                        break;
-
-                result = acpi_bus_scan(handle);
-                if (result) {
-                        acpi_handle_warn(handle, "Failed to add container\n");
-                        break;
-                }
-                result = acpi_bus_get_device(handle, &device);
-                if (result) {
-                        acpi_handle_warn(handle, "Missing device object\n");
-                        break;
-                }
-
-                kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
-                ost_code = ACPI_OST_SC_SUCCESS;
-                break;
-
-        case ACPI_NOTIFY_EJECT_REQUEST:
-                if (!acpi_bus_get_device(handle, &device) && device) {
-                        device->flags.eject_pending = 1;
-                        kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
-                        goto out;
-                }
-                break;
-
-        default:
-                /* non-hotplug event; possibly handled by other handler */
-                goto out;
-        }
-
-        /* Inform firmware that the hotplug operation has completed */
-        (void) acpi_evaluate_hotplug_ost(handle, type, ost_code, NULL);
-
- out:
-        acpi_scan_lock_release();
-}
-
-static bool is_container(acpi_handle handle)
-{
-        struct acpi_device_info *info;
-        bool ret = false;
-
-        if (ACPI_FAILURE(acpi_get_object_info(handle, &info)))
-                return false;
-
-        if (info->valid & ACPI_VALID_HID) {
-                const struct acpi_device_id *id;
-
-                for (id = container_device_ids; id->id[0]; id++) {
-                        ret = !strcmp((char *)id->id, info->hardware_id.string);
-                        if (ret)
-                                break;
-                }
-        }
-        kfree(info);
-        return ret;
-}
-
-static acpi_status acpi_container_register_notify_handler(acpi_handle handle,
-                                                          u32 lvl, void *ctxt,
-                                                          void **retv)
-{
-        if (is_container(handle))
-                acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
-                                            container_notify_cb, NULL);
-
-        return AE_OK;
-}
-
 void __init acpi_container_init(void)
 {
-        acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
-                            acpi_container_register_notify_handler, NULL,
-                            NULL, NULL);
-
-        acpi_scan_add_handler(&container_device_handler);
+        acpi_scan_add_handler_with_hotplug(&container_handler, "container");
 }
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index dd314ef9bff1..96de787e6104 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -145,27 +145,36 @@ int acpi_device_get_power(struct acpi_device *device, int *state)
         }
 
         /*
-         * Get the device's power state either directly (via _PSC) or
-         * indirectly (via power resources).
+         * Get the device's power state from power resources settings and _PSC,
+         * if available.
          */
+        if (device->power.flags.power_resources) {
+                int error = acpi_power_get_inferred_state(device, &result);
+                if (error)
+                        return error;
+        }
         if (device->power.flags.explicit_get) {
+                acpi_handle handle = device->handle;
                 unsigned long long psc;
-                acpi_status status = acpi_evaluate_integer(device->handle,
-                                                           "_PSC", NULL, &psc);
+                acpi_status status;
+
+                status = acpi_evaluate_integer(handle, "_PSC", NULL, &psc);
                 if (ACPI_FAILURE(status))
                         return -ENODEV;
 
-                result = psc;
-        }
-        /* The test below covers ACPI_STATE_UNKNOWN too. */
-        if (result <= ACPI_STATE_D2) {
-          ; /* Do nothing. */
-        } else if (device->power.flags.power_resources) {
-                int error = acpi_power_get_inferred_state(device, &result);
-                if (error)
-                        return error;
-        } else if (result == ACPI_STATE_D3_HOT) {
-                result = ACPI_STATE_D3;
+                /*
+                 * The power resources settings may indicate a power state
+                 * shallower than the actual power state of the device.
+                 *
+                 * Moreover, on systems predating ACPI 4.0, if the device
+                 * doesn't depend on any power resources and _PSC returns 3,
+                 * that means "power off".  We need to maintain compatibility
+                 * with those systems.
+                 */
+                if (psc > result && psc < ACPI_STATE_D3_COLD)
+                        result = psc;
+                else if (result == ACPI_STATE_UNKNOWN)
+                        result = psc > ACPI_STATE_D2 ? ACPI_STATE_D3_COLD : psc;
         }
 
         /*
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index f815da82c765..8d1c0105e113 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -174,9 +174,13 @@ static int acpi_fan_add(struct acpi_device *device)
 
 static int acpi_fan_remove(struct acpi_device *device)
 {
-        struct thermal_cooling_device *cdev = acpi_driver_data(device);
+        struct thermal_cooling_device *cdev;
+
+        if (!device)
+                return -EINVAL;
 
-        if (!device || !cdev)
+        cdev =  acpi_driver_data(device);
+        if (!cdev)
                 return -EINVAL;
 
         sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 3c94a732b4b3..6f1afd9118c8 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -41,6 +41,17 @@ void acpi_container_init(void);
 #else
 static inline void acpi_container_init(void) {}
 #endif
+#ifdef CONFIG_ACPI_HOTPLUG_MEMORY
+void acpi_memory_hotplug_init(void);
+#else
+static inline void acpi_memory_hotplug_init(void) {}
+#endif
+
+void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
+                                    const char *name);
+int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler,
+                                       const char *hotplug_profile_name);
+void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val);
 
 #ifdef CONFIG_DEBUG_FS
 extern struct dentry *acpi_debugfs_dir;
@@ -48,6 +59,11 @@ int acpi_debugfs_init(void);
 #else
 static inline void acpi_debugfs_init(void) { return; }
 #endif
+#ifdef CONFIG_X86_INTEL_LPSS
+void acpi_lpss_init(void);
+#else
+static inline void acpi_lpss_init(void) {}
+#endif
 
 /* --------------------------------------------------------------------------
                      Device Node Initialization / Removal
@@ -60,7 +76,7 @@ int acpi_device_add(struct acpi_device *device,
 void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
                              int type, unsigned long long sta);
 void acpi_device_add_finalize(struct acpi_device *device);
-void acpi_free_ids(struct acpi_device *device);
+void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
 
 /* --------------------------------------------------------------------------
                                   Power Resource
@@ -131,4 +147,7 @@ static inline void suspend_nvs_restore(void) {}
   -------------------------------------------------------------------------- */
 struct platform_device;
 
+int acpi_create_platform_device(struct acpi_device *adev,
+                                const struct acpi_device_id *id);
+
 #endif /* _ACPI_INTERNAL_H_ */
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 586e7e993d3d..e72186340fec 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -641,7 +641,7 @@ void __init acpi_initrd_override(void *data, size_t size)
          * Both memblock_reserve and e820_add_region (via arch_reserve_mem_area)
          * works fine.
          */
-        memblock_reserve(acpi_tables_addr, acpi_tables_addr + all_tables_size);
+        memblock_reserve(acpi_tables_addr, all_tables_size);
         arch_reserve_mem_area(acpi_tables_addr, all_tables_size);
 
         p = early_ioremap(acpi_tables_addr, all_tables_size);
@@ -1555,7 +1555,7 @@ int acpi_check_resource_conflict(const struct resource *res)
         else
                 space_id = ACPI_ADR_SPACE_SYSTEM_MEMORY;
 
-        length = res->end - res->start + 1;
+        length = resource_size(res);
         if (acpi_enforce_resources != ENFORCE_RESOURCES_NO)
                 warn = 1;
         clash = acpi_check_address_range(space_id, res->start, length, warn);
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index ab764ed34a50..2652a614deeb 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -354,6 +354,7 @@ static int acpi_pci_link_set(struct acpi_pci_link *link, int irq)
 
         }
         resource->end.type = ACPI_RESOURCE_TYPE_END_TAG;
+        resource->end.length = sizeof(struct acpi_resource);
 
         /* Attempt to set the resource */
         status = acpi_set_current_resources(link->device->handle, &buffer);
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index ac8688b89705..1dd6f6c85874 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -169,8 +169,8 @@ static acpi_status acpi_pci_query_osc(struct acpi_pci_root *root,
                 *control &= OSC_PCI_CONTROL_MASKS;
                 capbuf[OSC_CONTROL_TYPE] = *control | root->osc_control_set;
         } else {
-                /* Run _OSC query for all possible controls. */
-                capbuf[OSC_CONTROL_TYPE] = OSC_PCI_CONTROL_MASKS;
+                /* Run _OSC query only with existing controls. */
+                capbuf[OSC_CONTROL_TYPE] = root->osc_control_set;
         }
 
         status = acpi_pci_run_osc(root->device->handle, capbuf, &result);
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 34f5ef11d427..f962047c6c85 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -459,57 +459,79 @@ static struct attribute_group attr_groups[] = {
         },
 };
 
-static void acpi_power_hide_list(struct acpi_device *adev, int state)
+static struct attribute_group wakeup_attr_group = {
+        .name = "power_resources_wakeup",
+        .attrs = attrs,
+};
+
+static void acpi_power_hide_list(struct acpi_device *adev,
+                                 struct list_head *resources,
+                                 struct attribute_group *attr_group)
 {
-        struct acpi_device_power_state *ps = &adev->power.states[state];
         struct acpi_power_resource_entry *entry;
 
-        if (list_empty(&ps->resources))
+        if (list_empty(resources))
                 return;
 
-        list_for_each_entry_reverse(entry, &ps->resources, node) {
+        list_for_each_entry_reverse(entry, resources, node) {
                 struct acpi_device *res_dev = &entry->resource->device;
 
                 sysfs_remove_link_from_group(&adev->dev.kobj,
-                                             attr_groups[state].name,
+                                             attr_group->name,
                                              dev_name(&res_dev->dev));
         }
-        sysfs_remove_group(&adev->dev.kobj, &attr_groups[state]);
+        sysfs_remove_group(&adev->dev.kobj, attr_group);
 }
 
-static void acpi_power_expose_list(struct acpi_device *adev, int state)
+static void acpi_power_expose_list(struct acpi_device *adev,
+                                   struct list_head *resources,
+                                   struct attribute_group *attr_group)
 {
-        struct acpi_device_power_state *ps = &adev->power.states[state];
         struct acpi_power_resource_entry *entry;
         int ret;
 
-        if (list_empty(&ps->resources))
+        if (list_empty(resources))
                 return;
 
-        ret = sysfs_create_group(&adev->dev.kobj, &attr_groups[state]);
+        ret = sysfs_create_group(&adev->dev.kobj, attr_group);
         if (ret)
                 return;
 
-        list_for_each_entry(entry, &ps->resources, node) {
+        list_for_each_entry(entry, resources, node) {
                 struct acpi_device *res_dev = &entry->resource->device;
 
                 ret = sysfs_add_link_to_group(&adev->dev.kobj,
-                                              attr_groups[state].name,
+                                              attr_group->name,
                                               &res_dev->dev.kobj,
                                               dev_name(&res_dev->dev));
                 if (ret) {
-                        acpi_power_hide_list(adev, state);
+                        acpi_power_hide_list(adev, resources, attr_group);
                         break;
                 }
         }
 }
 
+static void acpi_power_expose_hide(struct acpi_device *adev,
+                                   struct list_head *resources,
+                                   struct attribute_group *attr_group,
+                                   bool expose)
+{
+        if (expose)
+                acpi_power_expose_list(adev, resources, attr_group);
+        else
+                acpi_power_hide_list(adev, resources, attr_group);
+}
+
 void acpi_power_add_remove_device(struct acpi_device *adev, bool add)
 {
         struct acpi_device_power_state *ps;
         struct acpi_power_resource_entry *entry;
         int state;
 
+        if (adev->wakeup.flags.valid)
+                acpi_power_expose_hide(adev, &adev->wakeup.resources,
+                                       &wakeup_attr_group, add);
+
         if (!adev->power.flags.power_resources)
                 return;
 
@@ -523,12 +545,10 @@ void acpi_power_add_remove_device(struct acpi_device *adev, bool add)
                         acpi_power_remove_dependent(resource, adev);
         }
 
-        for (state = ACPI_STATE_D0; state <= ACPI_STATE_D3_HOT; state++) {
-                if (add)
-                        acpi_power_expose_list(adev, state);
-                else
-                        acpi_power_hide_list(adev, state);
-        }
+        for (state = ACPI_STATE_D0; state <= ACPI_STATE_D3_HOT; state++)
+                acpi_power_expose_hide(adev,
+                                       &adev->power.states[state].resources,
+                                       &attr_groups[state], add);
 }
 
 int acpi_power_wakeup_list_init(struct list_head *list, int *system_level_p)
@@ -824,7 +844,7 @@ static void acpi_release_power_resource(struct device *dev)
         list_del(&resource->list_node);
         mutex_unlock(&power_resource_list_lock);
 
-        acpi_free_ids(device);
+        acpi_free_pnp_ids(&device->pnp);
         kfree(resource);
 }
 
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index ee255c60bdac..f0df2c9434d2 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -918,7 +918,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
 struct cpuidle_driver acpi_idle_driver = {
         .name =         "acpi_idle",
         .owner =        THIS_MODULE,
-        .en_core_tk_irqen = 1,
 };
 
 /**
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index 641b5450a0db..e8e652710e65 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -218,9 +218,13 @@ processor_get_max_state(struct thermal_cooling_device *cdev,
                         unsigned long *state)
 {
         struct acpi_device *device = cdev->devdata;
-        struct acpi_processor *pr = acpi_driver_data(device);
+        struct acpi_processor *pr;
 
-        if (!device || !pr)
+        if (!device)
+                return -EINVAL;
+
+        pr = acpi_driver_data(device);
+        if (!pr)
                 return -EINVAL;
 
         *state = acpi_processor_max_state(pr);
@@ -232,9 +236,13 @@ processor_get_cur_state(struct thermal_cooling_device *cdev,
                         unsigned long *cur_state)
 {
         struct acpi_device *device = cdev->devdata;
-        struct acpi_processor *pr = acpi_driver_data(device);
+        struct acpi_processor *pr;
 
-        if (!device || !pr)
+        if (!device)
+                return -EINVAL;
+
+        pr = acpi_driver_data(device);
+        if (!pr)
                 return -EINVAL;
 
         *cur_state = cpufreq_get_cur_state(pr->id);
@@ -248,11 +256,15 @@ processor_set_cur_state(struct thermal_cooling_device *cdev,
                         unsigned long state)
 {
         struct acpi_device *device = cdev->devdata;
-        struct acpi_processor *pr = acpi_driver_data(device);
+        struct acpi_processor *pr;
         int result = 0;
         int max_pstate;
 
-        if (!device || !pr)
+        if (!device)
+                return -EINVAL;
+
+        pr = acpi_driver_data(device);
+        if (!pr)
                 return -EINVAL;
 
         max_pstate = cpufreq_get_max_state(pr->id);
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 1d02b7b5ade0..e7dd2c1fee79 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -211,9 +211,10 @@ err_ret:
  */
 void acpi_processor_throttling_init(void)
 {
-        if (acpi_processor_update_tsd_coord())
+        if (acpi_processor_update_tsd_coord()) {
                 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                         "Assume no T-state coordination\n"));
+        }
 
         return;
 }
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index f54d1985e594..fe158fd4f1df 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -63,6 +63,19 @@ int acpi_scan_add_handler(struct acpi_scan_handler *handler)
         return 0;
 }
 
+int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler,
+                                       const char *hotplug_profile_name)
+{
+        int error;
+
+        error = acpi_scan_add_handler(handler);
+        if (error)
+                return error;
+
+        acpi_sysfs_add_hotplug_profile(&handler->hotplug, hotplug_profile_name);
+        return 0;
+}
+
 /*
  * Creates hid/cid(s) string needed for modalias and uevent
  * e.g. on a device with hid:IBM0001 and cid:ACPI0001 you get:
@@ -107,32 +120,20 @@ acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, cha
 }
 static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
 
-/**
- * acpi_bus_hot_remove_device: hot-remove a device and its children
- * @context: struct acpi_eject_event pointer (freed in this func)
- *
- * Hot-remove a device and its children. This function frees up the
- * memory space passed by arg context, so that the caller may call
- * this function asynchronously through acpi_os_hotplug_execute().
- */
-void acpi_bus_hot_remove_device(void *context)
+static int acpi_scan_hot_remove(struct acpi_device *device)
 {
-        struct acpi_eject_event *ej_event = context;
-        struct acpi_device *device = ej_event->device;
         acpi_handle handle = device->handle;
-        acpi_handle temp;
+        acpi_handle not_used;
         struct acpi_object_list arg_list;
         union acpi_object arg;
-        acpi_status status = AE_OK;
-        u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
-
-        mutex_lock(&acpi_scan_lock);
+        acpi_status status;
+        unsigned long long sta;
 
         /* If there is no handle, the device node has been unregistered. */
-        if (!device->handle) {
+        if (!handle) {
                 dev_dbg(&device->dev, "ACPI handle missing\n");
                 put_device(&device->dev);
-                goto out;
+                return -EINVAL;
         }
 
         ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -143,7 +144,7 @@ void acpi_bus_hot_remove_device(void *context)
         put_device(&device->dev);
         device = NULL;
 
-        if (ACPI_SUCCESS(acpi_get_handle(handle, "_LCK", &temp))) {
+        if (ACPI_SUCCESS(acpi_get_handle(handle, "_LCK", &not_used))) {
                 arg_list.count = 1;
                 arg_list.pointer = &arg;
                 arg.type = ACPI_TYPE_INTEGER;
@@ -161,18 +162,205 @@ void acpi_bus_hot_remove_device(void *context)
          */
         status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL);
         if (ACPI_FAILURE(status)) {
-                if (status != AE_NOT_FOUND)
-                        acpi_handle_warn(handle, "Eject failed\n");
+                if (status == AE_NOT_FOUND) {
+                        return -ENODEV;
+                } else {
+                        acpi_handle_warn(handle, "Eject failed (0x%x)\n",
+                                                                status);
+                        return -EIO;
+                }
+        }
 
-                /* Tell the firmware the hot-remove operation has failed. */
-                acpi_evaluate_hotplug_ost(handle, ej_event->event,
-                                          ost_code, NULL);
+        /*
+         * Verify if eject was indeed successful.  If not, log an error
+         * message.  No need to call _OST since _EJ0 call was made OK.
+         */
+        status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+        if (ACPI_FAILURE(status)) {
+                acpi_handle_warn(handle,
+                        "Status check after eject failed (0x%x)\n", status);
+        } else if (sta & ACPI_STA_DEVICE_ENABLED) {
+                acpi_handle_warn(handle,
+                        "Eject incomplete - status 0x%llx\n", sta);
+        }
+
+        return 0;
+}
+
+static void acpi_bus_device_eject(void *context)
+{
+        acpi_handle handle = context;
+        struct acpi_device *device = NULL;
+        struct acpi_scan_handler *handler;
+        u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
+
+        mutex_lock(&acpi_scan_lock);
+
+        acpi_bus_get_device(handle, &device);
+        if (!device)
+                goto err_out;
+
+        handler = device->handler;
+        if (!handler || !handler->hotplug.enabled) {
+                ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
+                goto err_out;
+        }
+        acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST,
+                                  ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+        if (handler->hotplug.mode == AHM_CONTAINER) {
+                device->flags.eject_pending = true;
+                kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
+        } else {
+                int error;
+
+                get_device(&device->dev);
+                error = acpi_scan_hot_remove(device);
+                if (error)
+                        goto err_out;
         }
 
  out:
         mutex_unlock(&acpi_scan_lock);
-        kfree(context);
         return;
+
+ err_out:
+        acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, ost_code,
+                                  NULL);
+        goto out;
+}
+
+static void acpi_scan_bus_device_check(acpi_handle handle, u32 ost_source)
+{
+        struct acpi_device *device = NULL;
+        u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
+        int error;
+
+        mutex_lock(&acpi_scan_lock);
+
+        acpi_bus_get_device(handle, &device);
+        if (device) {
+                dev_warn(&device->dev, "Attempt to re-insert\n");
+                goto out;
+        }
+        acpi_evaluate_hotplug_ost(handle, ost_source,
+                                  ACPI_OST_SC_INSERT_IN_PROGRESS, NULL);
+        error = acpi_bus_scan(handle);
+        if (error) {
+                acpi_handle_warn(handle, "Namespace scan failure\n");
+                goto out;
+        }
+        error = acpi_bus_get_device(handle, &device);
+        if (error) {
+                acpi_handle_warn(handle, "Missing device node object\n");
+                goto out;
+        }
+        ost_code = ACPI_OST_SC_SUCCESS;
+        if (device->handler && device->handler->hotplug.mode == AHM_CONTAINER)
+                kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
+
+ out:
+        acpi_evaluate_hotplug_ost(handle, ost_source, ost_code, NULL);
+        mutex_unlock(&acpi_scan_lock);
+}
+
+static void acpi_scan_bus_check(void *context)
+{
+        acpi_scan_bus_device_check((acpi_handle)context,
+                                   ACPI_NOTIFY_BUS_CHECK);
+}
+
+static void acpi_scan_device_check(void *context)
+{
+        acpi_scan_bus_device_check((acpi_handle)context,
+                                   ACPI_NOTIFY_DEVICE_CHECK);
+}
+
+static void acpi_hotplug_unsupported(acpi_handle handle, u32 type)
+{
+        u32 ost_status;
+
+        switch (type) {
+        case ACPI_NOTIFY_BUS_CHECK:
+                acpi_handle_debug(handle,
+                        "ACPI_NOTIFY_BUS_CHECK event: unsupported\n");
+                ost_status = ACPI_OST_SC_INSERT_NOT_SUPPORTED;
+                break;
+        case ACPI_NOTIFY_DEVICE_CHECK:
+                acpi_handle_debug(handle,
+                        "ACPI_NOTIFY_DEVICE_CHECK event: unsupported\n");
+                ost_status = ACPI_OST_SC_INSERT_NOT_SUPPORTED;
+                break;
+        case ACPI_NOTIFY_EJECT_REQUEST:
+                acpi_handle_debug(handle,
+                        "ACPI_NOTIFY_EJECT_REQUEST event: unsupported\n");
+                ost_status = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
+                break;
+        default:
+                /* non-hotplug event; possibly handled by other handler */
+                return;
+        }
+
+        acpi_evaluate_hotplug_ost(handle, type, ost_status, NULL);
+}
+
+static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data)
+{
+        acpi_osd_exec_callback callback;
+        struct acpi_scan_handler *handler = data;
+        acpi_status status;
+
+        if (!handler->hotplug.enabled)
+                return acpi_hotplug_unsupported(handle, type);
+
+        switch (type) {
+        case ACPI_NOTIFY_BUS_CHECK:
+                acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
+                callback = acpi_scan_bus_check;
+                break;
+        case ACPI_NOTIFY_DEVICE_CHECK:
+                acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
+                callback = acpi_scan_device_check;
+                break;
+        case ACPI_NOTIFY_EJECT_REQUEST:
+                acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
+                callback = acpi_bus_device_eject;
+                break;
+        default:
+                /* non-hotplug event; possibly handled by other handler */
+                return;
+        }
+        status = acpi_os_hotplug_execute(callback, handle);
+        if (ACPI_FAILURE(status))
+                acpi_evaluate_hotplug_ost(handle, type,
+                                          ACPI_OST_SC_NON_SPECIFIC_FAILURE,
+                                          NULL);
+}
+
+/**
+ * acpi_bus_hot_remove_device: hot-remove a device and its children
+ * @context: struct acpi_eject_event pointer (freed in this func)
+ *
+ * Hot-remove a device and its children. This function frees up the
+ * memory space passed by arg context, so that the caller may call
+ * this function asynchronously through acpi_os_hotplug_execute().
+ */
+void acpi_bus_hot_remove_device(void *context)
+{
+        struct acpi_eject_event *ej_event = context;
+        struct acpi_device *device = ej_event->device;
+        acpi_handle handle = device->handle;
+        int error;
+
+        mutex_lock(&acpi_scan_lock);
+
+        error = acpi_scan_hot_remove(device);
+        if (error && handle)
+                acpi_evaluate_hotplug_ost(handle, ej_event->event,
+                                          ACPI_OST_SC_NON_SPECIFIC_FAILURE,
+                                          NULL);
+
+        mutex_unlock(&acpi_scan_lock);
+        kfree(context);
 }
 EXPORT_SYMBOL(acpi_bus_hot_remove_device);
 
@@ -206,51 +394,61 @@ static ssize_t
 acpi_eject_store(struct device *d, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
-        int ret = count;
-        acpi_status status;
-        acpi_object_type type = 0;
         struct acpi_device *acpi_device = to_acpi_device(d);
         struct acpi_eject_event *ej_event;
+        acpi_object_type not_used;
+        acpi_status status;
+        u32 ost_source;
+        int ret;
 
-        if ((!count) || (buf[0] != '1')) {
+        if (!count || buf[0] != '1')
                 return -EINVAL;
-        }
-        if (!acpi_device->driver && !acpi_device->handler) {
-                ret = -ENODEV;
-                goto err;
-        }
-        status = acpi_get_type(acpi_device->handle, &type);
-        if (ACPI_FAILURE(status) || (!acpi_device->flags.ejectable)) {
-                ret = -ENODEV;
-                goto err;
-        }
 
-        ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
-        if (!ej_event) {
-                ret = -ENOMEM;
-                goto err;
-        }
+        if ((!acpi_device->handler || !acpi_device->handler->hotplug.enabled)
+            && !acpi_device->driver)
+                return -ENODEV;
+
+        status = acpi_get_type(acpi_device->handle, &not_used);
+        if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable)
+                return -ENODEV;
+
+        mutex_lock(&acpi_scan_lock);
 
-        get_device(&acpi_device->dev);
-        ej_event->device = acpi_device;
         if (acpi_device->flags.eject_pending) {
-                /* event originated from ACPI eject notification */
-                ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
+                /* ACPI eject notification event. */
+                ost_source = ACPI_NOTIFY_EJECT_REQUEST;
                 acpi_device->flags.eject_pending = 0;
         } else {
-                /* event originated from user */
-                ej_event->event = ACPI_OST_EC_OSPM_EJECT;
-                (void) acpi_evaluate_hotplug_ost(acpi_device->handle,
-                        ej_event->event, ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+                /* Eject initiated by user space. */
+                ost_source = ACPI_OST_EC_OSPM_EJECT;
         }
-
+        ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
+        if (!ej_event) {
+                ret = -ENOMEM;
+                goto err_out;
+        }
+        acpi_evaluate_hotplug_ost(acpi_device->handle, ost_source,
+                                  ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+        ej_event->device = acpi_device;
+        ej_event->event = ost_source;
+        get_device(&acpi_device->dev);
         status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event);
         if (ACPI_FAILURE(status)) {
                 put_device(&acpi_device->dev);
                 kfree(ej_event);
+                ret = status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
+                goto err_out;
         }
-err:
+        ret = count;
+
+ out:
+        mutex_unlock(&acpi_scan_lock);
         return ret;
+
+ err_out:
+        acpi_evaluate_hotplug_ost(acpi_device->handle, ost_source,
+                                  ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
+        goto out;
 }
 
 static DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
@@ -376,7 +574,7 @@ static int acpi_device_setup_files(struct acpi_device *dev)
                         goto end;
         }
 
-        if (dev->flags.bus_address)
+        if (dev->pnp.type.bus_address)
                 result = device_create_file(&dev->dev, &dev_attr_adr);
         if (dev->pnp.unique_id)
                 result = device_create_file(&dev->dev, &dev_attr_uid);
@@ -449,7 +647,7 @@ static void acpi_device_remove_files(struct acpi_device *dev)
 
         if (dev->pnp.unique_id)
                 device_remove_file(&dev->dev, &dev_attr_uid);
-        if (dev->flags.bus_address)
+        if (dev->pnp.type.bus_address)
                 device_remove_file(&dev->dev, &dev_attr_adr);
         device_remove_file(&dev->dev, &dev_attr_modalias);
         device_remove_file(&dev->dev, &dev_attr_hid);
@@ -512,17 +710,6 @@ int acpi_match_device_ids(struct acpi_device *device,
 }
 EXPORT_SYMBOL(acpi_match_device_ids);
 
-void acpi_free_ids(struct acpi_device *device)
-{
-        struct acpi_hardware_id *id, *tmp;
-
-        list_for_each_entry_safe(id, tmp, &device->pnp.ids, list) {
-                kfree(id->id);
-                kfree(id);
-        }
-        kfree(device->pnp.unique_id);
-}
-
 static void acpi_free_power_resources_lists(struct acpi_device *device)
 {
         int i;
@@ -543,7 +730,7 @@ static void acpi_device_release(struct device *dev)
 {
         struct acpi_device *acpi_dev = to_acpi_device(dev);
 
-        acpi_free_ids(acpi_dev);
+        acpi_free_pnp_ids(&acpi_dev->pnp);
         acpi_free_power_resources_lists(acpi_dev);
         kfree(acpi_dev);
 }
@@ -1256,19 +1443,17 @@ static void acpi_device_get_busid(struct acpi_device *device)
 }
 
 /*
- * acpi_bay_match - see if a device is an ejectable driver bay
+ * acpi_bay_match - see if an acpi object is an ejectable driver bay
  *
  * If an acpi object is ejectable and has one of the ACPI ATA methods defined,
  * then we can safely call it an ejectable drive bay
  */
-static int acpi_bay_match(struct acpi_device *device){
+static int acpi_bay_match(acpi_handle handle)
+{
         acpi_status status;
-        acpi_handle handle;
         acpi_handle tmp;
         acpi_handle phandle;
 
-        handle = device->handle;
-
         status = acpi_get_handle(handle, "_EJ0", &tmp);
         if (ACPI_FAILURE(status))
                 return -ENODEV;
@@ -1292,12 +1477,12 @@ static int acpi_bay_match(struct acpi_device *device){
 }
 
 /*
- * acpi_dock_match - see if a device has a _DCK method
+ * acpi_dock_match - see if an acpi object has a _DCK method
  */
-static int acpi_dock_match(struct acpi_device *device)
+static int acpi_dock_match(acpi_handle handle)
 {
         acpi_handle tmp;
-        return acpi_get_handle(device->handle, "_DCK", &tmp);
+        return acpi_get_handle(handle, "_DCK", &tmp);
 }
 
 const char *acpi_device_hid(struct acpi_device *device)
@@ -1312,7 +1497,7 @@ const char *acpi_device_hid(struct acpi_device *device)
 }
 EXPORT_SYMBOL(acpi_device_hid);
 
-static void acpi_add_id(struct acpi_device *device, const char *dev_id)
+static void acpi_add_id(struct acpi_device_pnp *pnp, const char *dev_id)
 {
         struct acpi_hardware_id *id;
 
@@ -1326,7 +1511,8 @@ static void acpi_add_id(struct acpi_device *device, const char *dev_id)
                 return;
         }
 
-        list_add_tail(&id->list, &device->pnp.ids);
+        list_add_tail(&id->list, &pnp->ids);
+        pnp->type.hardware_id = 1;
 }
 
 /*
@@ -1334,7 +1520,7 @@ static void acpi_add_id(struct acpi_device *device, const char *dev_id)
  * lacks the SMBUS01 HID and the methods do not have the necessary "_"
  * prefix.  Work around this.
  */
-static int acpi_ibm_smbus_match(struct acpi_device *device)
+static int acpi_ibm_smbus_match(acpi_handle handle)
 {
         acpi_handle h_dummy;
         struct acpi_buffer path = {ACPI_ALLOCATE_BUFFER, NULL};
@@ -1344,7 +1530,7 @@ static int acpi_ibm_smbus_match(struct acpi_device *device)
                 return -ENODEV;
 
         /* Look for SMBS object */
-        result = acpi_get_name(device->handle, ACPI_SINGLE_NAME, &path);
+        result = acpi_get_name(handle, ACPI_SINGLE_NAME, &path);
         if (result)
                 return result;
 
@@ -1355,48 +1541,50 @@ static int acpi_ibm_smbus_match(struct acpi_device *device)
 
         /* Does it have the necessary (but misnamed) methods? */
         result = -ENODEV;
-        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "SBI", &h_dummy)) &&
-            ACPI_SUCCESS(acpi_get_handle(device->handle, "SBR", &h_dummy)) &&
-            ACPI_SUCCESS(acpi_get_handle(device->handle, "SBW", &h_dummy)))
+        if (ACPI_SUCCESS(acpi_get_handle(handle, "SBI", &h_dummy)) &&
+            ACPI_SUCCESS(acpi_get_handle(handle, "SBR", &h_dummy)) &&
+            ACPI_SUCCESS(acpi_get_handle(handle, "SBW", &h_dummy)))
                 result = 0;
 out:
         kfree(path.pointer);
         return result;
 }
 
-static void acpi_device_set_id(struct acpi_device *device)
+static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
+                                int device_type)
 {
         acpi_status status;
         struct acpi_device_info *info;
         struct acpi_pnp_device_id_list *cid_list;
         int i;
 
-        switch (device->device_type) {
+        switch (device_type) {
         case ACPI_BUS_TYPE_DEVICE:
-                if (ACPI_IS_ROOT_DEVICE(device)) {
-                        acpi_add_id(device, ACPI_SYSTEM_HID);
+                if (handle == ACPI_ROOT_OBJECT) {
+                        acpi_add_id(pnp, ACPI_SYSTEM_HID);
                         break;
                 }
 
-                status = acpi_get_object_info(device->handle, &info);
+                status = acpi_get_object_info(handle, &info);
                 if (ACPI_FAILURE(status)) {
-                        printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__);
+                        pr_err(PREFIX "%s: Error reading device info\n",
+                                        __func__);
                         return;
                 }
 
                 if (info->valid & ACPI_VALID_HID)
-                        acpi_add_id(device, info->hardware_id.string);
+                        acpi_add_id(pnp, info->hardware_id.string);
                 if (info->valid & ACPI_VALID_CID) {
                         cid_list = &info->compatible_id_list;
                         for (i = 0; i < cid_list->count; i++)
-                                acpi_add_id(device, cid_list->ids[i].string);
+                                acpi_add_id(pnp, cid_list->ids[i].string);
                 }
                 if (info->valid & ACPI_VALID_ADR) {
-                        device->pnp.bus_address = info->address;
-                        device->flags.bus_address = 1;
+                        pnp->bus_address = info->address;
+                        pnp->type.bus_address = 1;
                 }
                 if (info->valid & ACPI_VALID_UID)
-                        device->pnp.unique_id = kstrdup(info->unique_id.string,
+                        pnp->unique_id = kstrdup(info->unique_id.string,
                                                         GFP_KERNEL);
 
                 kfree(info);
@@ -1405,40 +1593,50 @@ static void acpi_device_set_id(struct acpi_device *device)
                  * Some devices don't reliably have _HIDs & _CIDs, so add
                  * synthetic HIDs to make sure drivers can find them.
                  */
-                if (acpi_is_video_device(device))
-                        acpi_add_id(device, ACPI_VIDEO_HID);
-                else if (ACPI_SUCCESS(acpi_bay_match(device)))
-                        acpi_add_id(device, ACPI_BAY_HID);
-                else if (ACPI_SUCCESS(acpi_dock_match(device)))
-                        acpi_add_id(device, ACPI_DOCK_HID);
-                else if (!acpi_ibm_smbus_match(device))
-                        acpi_add_id(device, ACPI_SMBUS_IBM_HID);
-                else if (list_empty(&device->pnp.ids) &&
-                         ACPI_IS_ROOT_DEVICE(device->parent)) {
-                        acpi_add_id(device, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
-                        strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);
-                        strcpy(device->pnp.device_class, ACPI_BUS_CLASS);
+                if (acpi_is_video_device(handle))
+                        acpi_add_id(pnp, ACPI_VIDEO_HID);
+                else if (ACPI_SUCCESS(acpi_bay_match(handle)))
+                        acpi_add_id(pnp, ACPI_BAY_HID);
+                else if (ACPI_SUCCESS(acpi_dock_match(handle)))
+                        acpi_add_id(pnp, ACPI_DOCK_HID);
+                else if (!acpi_ibm_smbus_match(handle))
+                        acpi_add_id(pnp, ACPI_SMBUS_IBM_HID);
+                else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT) {
+                        acpi_add_id(pnp, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
+                        strcpy(pnp->device_name, ACPI_BUS_DEVICE_NAME);
+                        strcpy(pnp->device_class, ACPI_BUS_CLASS);
                 }
 
                 break;
         case ACPI_BUS_TYPE_POWER:
-                acpi_add_id(device, ACPI_POWER_HID);
+                acpi_add_id(pnp, ACPI_POWER_HID);
                 break;
         case ACPI_BUS_TYPE_PROCESSOR:
-                acpi_add_id(device, ACPI_PROCESSOR_OBJECT_HID);
+                acpi_add_id(pnp, ACPI_PROCESSOR_OBJECT_HID);
                 break;
         case ACPI_BUS_TYPE_THERMAL:
-                acpi_add_id(device, ACPI_THERMAL_HID);
+                acpi_add_id(pnp, ACPI_THERMAL_HID);
                 break;
         case ACPI_BUS_TYPE_POWER_BUTTON:
-                acpi_add_id(device, ACPI_BUTTON_HID_POWERF);
+                acpi_add_id(pnp, ACPI_BUTTON_HID_POWERF);
                 break;
         case ACPI_BUS_TYPE_SLEEP_BUTTON:
-                acpi_add_id(device, ACPI_BUTTON_HID_SLEEPF);
+                acpi_add_id(pnp, ACPI_BUTTON_HID_SLEEPF);
                 break;
         }
 }
 
+void acpi_free_pnp_ids(struct acpi_device_pnp *pnp)
+{
+        struct acpi_hardware_id *id, *tmp;
+
+        list_for_each_entry_safe(id, tmp, &pnp->ids, list) {
+                kfree(id->id);
+                kfree(id);
+        }
+        kfree(pnp->unique_id);
+}
+
 void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
                              int type, unsigned long long sta)
 {
@@ -1448,7 +1646,7 @@ void acpi_init_device_object(struct acpi_device *device, acpi_handle handle,
         device->parent = acpi_bus_get_parent(handle);
         STRUCT_TO_INT(device->status) = sta;
         acpi_device_get_busid(device);
-        acpi_device_set_id(device);
+        acpi_set_pnp_ids(handle, &device->pnp, type);
         acpi_bus_get_flags(device);
         device->flags.match_driver = false;
         device_initialize(&device->dev);
@@ -1536,6 +1734,75 @@ static int acpi_bus_type_and_status(acpi_handle handle, int *type,
         return 0;
 }
 
+static bool acpi_scan_handler_matching(struct acpi_scan_handler *handler,
+                                       char *idstr,
+                                       const struct acpi_device_id **matchid)
+{
+        const struct acpi_device_id *devid;
+
+        for (devid = handler->ids; devid->id[0]; devid++)
+                if (!strcmp((char *)devid->id, idstr)) {
+                        if (matchid)
+                                *matchid = devid;
+
+                        return true;
+                }
+
+        return false;
+}
+
+static struct acpi_scan_handler *acpi_scan_match_handler(char *idstr,
+                                        const struct acpi_device_id **matchid)
+{
+        struct acpi_scan_handler *handler;
+
+        list_for_each_entry(handler, &acpi_scan_handlers_list, list_node)
+                if (acpi_scan_handler_matching(handler, idstr, matchid))
+                        return handler;
+
+        return NULL;
+}
+
+void acpi_scan_hotplug_enabled(struct acpi_hotplug_profile *hotplug, bool val)
+{
+        if (!!hotplug->enabled == !!val)
+                return;
+
+        mutex_lock(&acpi_scan_lock);
+
+        hotplug->enabled = val;
+
+        mutex_unlock(&acpi_scan_lock);
+}
+
+static void acpi_scan_init_hotplug(acpi_handle handle, int type)
+{
+        struct acpi_device_pnp pnp = {};
+        struct acpi_hardware_id *hwid;
+        struct acpi_scan_handler *handler;
+
+        INIT_LIST_HEAD(&pnp.ids);
+        acpi_set_pnp_ids(handle, &pnp, type);
+
+        if (!pnp.type.hardware_id)
+                return;
+
+        /*
+         * This relies on the fact that acpi_install_notify_handler() will not
+         * install the same notify handler routine twice for the same handle.
+         */
+        list_for_each_entry(hwid, &pnp.ids, list) {
+                handler = acpi_scan_match_handler(hwid->id, NULL);
+                if (handler) {
+                        acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+                                        acpi_hotplug_notify_cb, handler);
+                        break;
+                }
+        }
+
+        acpi_free_pnp_ids(&pnp);
+}
+
 static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
                                       void *not_used, void **return_value)
 {
@@ -1558,6 +1825,8 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
                 return AE_OK;
         }
 
+        acpi_scan_init_hotplug(handle, type);
+
         if (!(sta & ACPI_STA_DEVICE_PRESENT) &&
             !(sta & ACPI_STA_DEVICE_FUNCTIONING)) {
                 struct acpi_device_wakeup wakeup;
@@ -1583,42 +1852,26 @@ static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl_not_used,
         return AE_OK;
 }
 
-static int acpi_scan_do_attach_handler(struct acpi_device *device, char *id)
+static int acpi_scan_attach_handler(struct acpi_device *device)
 {
-        struct acpi_scan_handler *handler;
+        struct acpi_hardware_id *hwid;
+        int ret = 0;
 
-        list_for_each_entry(handler, &acpi_scan_handlers_list, list_node) {
+        list_for_each_entry(hwid, &device->pnp.ids, list) {
                 const struct acpi_device_id *devid;
+                struct acpi_scan_handler *handler;
 
-                for (devid = handler->ids; devid->id[0]; devid++) {
-                        int ret;
-
-                        if (strcmp((char *)devid->id, id))
-                                continue;
-
+                handler = acpi_scan_match_handler(hwid->id, &devid);
+                if (handler) {
                         ret = handler->attach(device, devid);
                         if (ret > 0) {
                                 device->handler = handler;
-                                return ret;
+                                break;
                         } else if (ret < 0) {
-                                return ret;
+                                break;
                         }
                 }
         }
-        return 0;
-}
-
-static int acpi_scan_attach_handler(struct acpi_device *device)
-{
-        struct acpi_hardware_id *hwid;
-        int ret = 0;
-
-        list_for_each_entry(hwid, &device->pnp.ids, list) {
-                ret = acpi_scan_do_attach_handler(device, hwid->id);
-                if (ret)
-                        break;
-
-        }
         return ret;
 }
 
@@ -1788,8 +2041,10 @@ int __init acpi_scan_init(void)
         acpi_pci_root_init();
         acpi_pci_link_init();
         acpi_platform_init();
+        acpi_lpss_init();
         acpi_csrt_init();
         acpi_container_init();
+        acpi_memory_hotplug_init();
 
         mutex_lock(&acpi_scan_lock);
         /*
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 41c0504470db..fcae5fa2e1b3 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -7,6 +7,8 @@
 #include <linux/moduleparam.h>
 #include <acpi/acpi_drivers.h>
 
+#include "internal.h"
+
 #define _COMPONENT              ACPI_SYSTEM_COMPONENT
 ACPI_MODULE_NAME("sysfs");
 
@@ -249,6 +251,7 @@ module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
 static LIST_HEAD(acpi_table_attr_list);
 static struct kobject *tables_kobj;
 static struct kobject *dynamic_tables_kobj;
+static struct kobject *hotplug_kobj;
 
 struct acpi_table_attr {
         struct bin_attribute attr;
@@ -716,6 +719,67 @@ acpi_show_profile(struct device *dev, struct device_attribute *attr,
 static const struct device_attribute pm_profile_attr =
         __ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
 
+static ssize_t hotplug_enabled_show(struct kobject *kobj,
+                                    struct kobj_attribute *attr, char *buf)
+{
+        struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
+
+        return sprintf(buf, "%d\n", hotplug->enabled);
+}
+
+static ssize_t hotplug_enabled_store(struct kobject *kobj,
+                                     struct kobj_attribute *attr,
+                                     const char *buf, size_t size)
+{
+        struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
+        unsigned int val;
+
+        if (kstrtouint(buf, 10, &val) || val > 1)
+                return -EINVAL;
+
+        acpi_scan_hotplug_enabled(hotplug, val);
+        return size;
+}
+
+static struct kobj_attribute hotplug_enabled_attr =
+        __ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show,
+                hotplug_enabled_store);
+
+static struct attribute *hotplug_profile_attrs[] = {
+        &hotplug_enabled_attr.attr,
+        NULL
+};
+
+static struct kobj_type acpi_hotplug_profile_ktype = {
+        .sysfs_ops = &kobj_sysfs_ops,
+        .default_attrs = hotplug_profile_attrs,
+};
+
+void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
+                                    const char *name)
+{
+        int error;
+
+        if (!hotplug_kobj)
+                goto err_out;
+
+        kobject_init(&hotplug->kobj, &acpi_hotplug_profile_ktype);
+        error = kobject_set_name(&hotplug->kobj, "%s", name);
+        if (error)
+                goto err_out;
+
+        hotplug->kobj.parent = hotplug_kobj;
+        error = kobject_add(&hotplug->kobj, hotplug_kobj, NULL);
+        if (error)
+                goto err_out;
+
+        kobject_uevent(&hotplug->kobj, KOBJ_ADD);
+        return;
+
+ err_out:
+        pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
+}
+
 int __init acpi_sysfs_init(void)
 {
         int result;
@@ -723,6 +787,8 @@ int __init acpi_sysfs_init(void)
         result = acpi_tables_sysfs_init();
         if (result)
                 return result;
+
+        hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
         result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
         return result;
 }
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 8470771e5eae..a33821ca3895 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -723,9 +723,19 @@ static int thermal_get_trend(struct thermal_zone_device *thermal,
                 return -EINVAL;
 
         if (type == THERMAL_TRIP_ACTIVE) {
-                /* aggressive active cooling */
-                *trend = THERMAL_TREND_RAISING;
-                return 0;
+                unsigned long trip_temp;
+                unsigned long temp = KELVIN_TO_MILLICELSIUS(tz->temperature,
+                                                        tz->kelvin_offset);
+                if (thermal_get_trip_temp(thermal, trip, &trip_temp))
+                        return -EINVAL;
+
+                if (temp > trip_temp) {
+                        *trend = THERMAL_TREND_RAISING;
+                        return 0;
+                } else {
+                        /* Fall back on default trend */
+                        return -EINVAL;
+                }
         }
 
         /*
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 313f959413dc..c3932d0876e0 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -167,7 +167,8 @@ struct acpi_video_device_flags {
         u8 dvi:1;
         u8 bios:1;
         u8 unknown:1;
-        u8 reserved:2;
+        u8 notify:1;
+        u8 reserved:1;
 };
 
 struct acpi_video_device_cap {
@@ -222,7 +223,7 @@ static int acpi_video_device_lcd_set_level(struct acpi_video_device *device,
                         int level);
 static int acpi_video_device_lcd_get_level_current(
                         struct acpi_video_device *device,
-                        unsigned long long *level, int init);
+                        unsigned long long *level, bool raw);
 static int acpi_video_get_next_level(struct acpi_video_device *device,
                                      u32 level_current, u32 event);
 static int acpi_video_switch_brightness(struct acpi_video_device *device,
@@ -236,7 +237,7 @@ static int acpi_video_get_brightness(struct backlight_device *bd)
         struct acpi_video_device *vd =
                 (struct acpi_video_device *)bl_get_data(bd);
 
-        if (acpi_video_device_lcd_get_level_current(vd, &cur_level, 0))
+        if (acpi_video_device_lcd_get_level_current(vd, &cur_level, false))
                 return -EINVAL;
         for (i = 2; i < vd->brightness->count; i++) {
                 if (vd->brightness->levels[i] == cur_level)
@@ -281,7 +282,7 @@ static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, unsig
         unsigned long long level;
         int offset;
 
-        if (acpi_video_device_lcd_get_level_current(video, &level, 0))
+        if (acpi_video_device_lcd_get_level_current(video, &level, false))
                 return -EINVAL;
         for (offset = 2; offset < video->brightness->count; offset++)
                 if (level == video->brightness->levels[offset]) {
@@ -447,12 +448,45 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
                 DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"),
                 },
         },
+        {
+         .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"),
+                },
+        },
         {}
 };
 
+static unsigned long long
+acpi_video_bqc_value_to_level(struct acpi_video_device *device,
+                              unsigned long long bqc_value)
+{
+        unsigned long long level;
+
+        if (device->brightness->flags._BQC_use_index) {
+                /*
+                 * _BQC returns an index that doesn't account for
+                 * the first 2 items with special meaning, so we need
+                 * to compensate for that by offsetting ourselves
+                 */
+                if (device->brightness->flags._BCL_reversed)
+                        bqc_value = device->brightness->count - 3 - bqc_value;
+
+                level = device->brightness->levels[bqc_value + 2];
+        } else {
+                level = bqc_value;
+        }
+
+        level += bqc_offset_aml_bug_workaround;
+
+        return level;
+}
+
 static int
 acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
-                                        unsigned long long *level, int init)
+                                        unsigned long long *level, bool raw)
 {
         acpi_status status = AE_OK;
         int i;
@@ -463,29 +497,30 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device,
                 status = acpi_evaluate_integer(device->dev->handle, buf,
                                                 NULL, level);
                 if (ACPI_SUCCESS(status)) {
-                        if (device->brightness->flags._BQC_use_index) {
-                                if (device->brightness->flags._BCL_reversed)
-                                        *level = device->brightness->count
-                                                                 - 3 - (*level);
-                                *level = device->brightness->levels[*level + 2];
-
+                        if (raw) {
+                                /*
+                                 * Caller has indicated he wants the raw
+                                 * value returned by _BQC, so don't furtherly
+                                 * mess with the value.
+                                 */
+                                return 0;
                         }
-                        *level += bqc_offset_aml_bug_workaround;
+
+                        *level = acpi_video_bqc_value_to_level(device, *level);
+
                         for (i = 2; i < device->brightness->count; i++)
                                 if (device->brightness->levels[i] == *level) {
                                         device->brightness->curr = *level;
                                         return 0;
                         }
-                        if (!init) {
-                                /*
-                                 * BQC returned an invalid level.
-                                 * Stop using it.
-                                 */
-                                ACPI_WARNING((AE_INFO,
-                                              "%s returned an invalid level",
-                                              buf));
-                                device->cap._BQC = device->cap._BCQ = 0;
-                        }
+                        /*
+                         * BQC returned an invalid level.
+                         * Stop using it.
+                         */
+                        ACPI_WARNING((AE_INFO,
+                                      "%s returned an invalid level",
+                                      buf));
+                        device->cap._BQC = device->cap._BCQ = 0;
                 } else {
                         /* Fixme:
                          * should we return an error or ignore this failure?
@@ -598,6 +633,56 @@ acpi_video_cmp_level(const void *a, const void *b)
 }
 
 /*
+ * Decides if _BQC/_BCQ for this system is usable
+ *
+ * We do this by changing the level first and then read out the current
+ * brightness level, if the value does not match, find out if it is using
+ * index. If not, clear the _BQC/_BCQ capability.
+ */
+static int acpi_video_bqc_quirk(struct acpi_video_device *device,
+                                int max_level, int current_level)
+{
+        struct acpi_video_device_brightness *br = device->brightness;
+        int result;
+        unsigned long long level;
+        int test_level;
+
+        /* don't mess with existing known broken systems */
+        if (bqc_offset_aml_bug_workaround)
+                return 0;
+
+        /*
+         * Some systems always report current brightness level as maximum
+         * through _BQC, we need to test another value for them.
+         */
+        test_level = current_level == max_level ? br->levels[2] : max_level;
+
+        result = acpi_video_device_lcd_set_level(device, test_level);
+        if (result)
+                return result;
+
+        result = acpi_video_device_lcd_get_level_current(device, &level, true);
+        if (result)
+                return result;
+
+        if (level != test_level) {
+                /* buggy _BQC found, need to find out if it uses index */
+                if (level < br->count) {
+                        if (br->flags._BCL_reversed)
+                                level = br->count - 3 - level;
+                        if (br->levels[level + 2] == test_level)
+                                br->flags._BQC_use_index = 1;
+                }
+
+                if (!br->flags._BQC_use_index)
+                        device->cap._BQC = device->cap._BCQ = 0;
+        }
+
+        return 0;
+}
+
+
+/*
  *  Arg:        
  *      device  : video output device (LCD, CRT, ..)
  *
@@ -703,42 +788,36 @@ acpi_video_init_brightness(struct acpi_video_device *device)
         if (!device->cap._BQC)
                 goto set_level;
 
-        result = acpi_video_device_lcd_get_level_current(device, &level_old, 1);
-        if (result)
-                goto out_free_levels;
-
-        /*
-         * Set the level to maximum and check if _BQC uses indexed value
-         */
-        result = acpi_video_device_lcd_set_level(device, max_level);
+        result = acpi_video_device_lcd_get_level_current(device,
+                                                         &level_old, true);
         if (result)
                 goto out_free_levels;
 
-        result = acpi_video_device_lcd_get_level_current(device, &level, 0);
+        result = acpi_video_bqc_quirk(device, max_level, level_old);
         if (result)
                 goto out_free_levels;
+        /*
+         * cap._BQC may get cleared due to _BQC is found to be broken
+         * in acpi_video_bqc_quirk, so check again here.
+         */
+        if (!device->cap._BQC)
+                goto set_level;
 
-        br->flags._BQC_use_index = (level == max_level ? 0 : 1);
-
-        if (!br->flags._BQC_use_index) {
+        if (use_bios_initial_backlight) {
+                level = acpi_video_bqc_value_to_level(device, level_old);
                 /*
-                 * Set the backlight to the initial state.
-                 * On some buggy laptops, _BQC returns an uninitialized value
-                 * when invoked for the first time, i.e. level_old is invalid.
-                 * set the backlight to max_level in this case
+                 * 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.
                  */
-                if (use_bios_initial_backlight) {
-                        for (i = 2; i < br->count; i++)
-                                if (level_old == br->levels[i])
-                                        level = level_old;
-                }
-                goto set_level;
+                for (i = 2; i < br->count; i++)
+                        if (level_old == br->levels[i])
+                                break;
+                if (i == br->count)
+                        level = max_level;
         }
 
-        if (br->flags._BCL_reversed)
-                level_old = (br->count - 1) - level_old;
-        level = br->levels[level_old];
-
 set_level:
         result = acpi_video_device_lcd_set_level(device, level);
         if (result)
@@ -996,53 +1075,51 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
         struct acpi_video_device *data;
         struct acpi_video_device_attrib* attribute;
 
-        if (!device || !video)
-                return -EINVAL;
-
         status =
             acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
-        if (ACPI_SUCCESS(status)) {
-
-                data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL);
-                if (!data)
-                        return -ENOMEM;
-
-                strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);
-                strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
-                device->driver_data = data;
-
-                data->device_id = device_id;
-                data->video = video;
-                data->dev = device;
+        /* Some device omits _ADR, we skip them instead of fail */
+        if (ACPI_FAILURE(status))
+                return 0;
 
-                attribute = acpi_video_get_device_attr(video, device_id);
+        data = kzalloc(sizeof(struct acpi_video_device), GFP_KERNEL);
+        if (!data)
+                return -ENOMEM;
 
-                if((attribute != NULL) && attribute->device_id_scheme) {
-                        switch (attribute->display_type) {
-                        case ACPI_VIDEO_DISPLAY_CRT:
-                                data->flags.crt = 1;
-                                break;
-                        case ACPI_VIDEO_DISPLAY_TV:
-                                data->flags.tvout = 1;
-                                break;
-                        case ACPI_VIDEO_DISPLAY_DVI:
-                                data->flags.dvi = 1;
-                                break;
-                        case ACPI_VIDEO_DISPLAY_LCD:
-                                data->flags.lcd = 1;
-                                break;
-                        default:
-                                data->flags.unknown = 1;
-                                break;
-                        }
-                        if(attribute->bios_can_detect)
-                                data->flags.bios = 1;
-                } else {
-                        /* Check for legacy IDs */
-                        device_type = acpi_video_get_device_type(video,
-                                                                 device_id);
-                        /* Ignore bits 16 and 18-20 */
-                        switch (device_type & 0xffe2ffff) {
+        strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);
+        strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
+        device->driver_data = data;
+
+        data->device_id = device_id;
+        data->video = video;
+        data->dev = device;
+
+        attribute = acpi_video_get_device_attr(video, device_id);
+
+        if((attribute != NULL) && attribute->device_id_scheme) {
+                switch (attribute->display_type) {
+                case ACPI_VIDEO_DISPLAY_CRT:
+                        data->flags.crt = 1;
+                        break;
+                case ACPI_VIDEO_DISPLAY_TV:
+                        data->flags.tvout = 1;
+                        break;
+                case ACPI_VIDEO_DISPLAY_DVI:
+                        data->flags.dvi = 1;
+                        break;
+                case ACPI_VIDEO_DISPLAY_LCD:
+                        data->flags.lcd = 1;
+                        break;
+                default:
+                        data->flags.unknown = 1;
+                        break;
+                }
+                if(attribute->bios_can_detect)
+                        data->flags.bios = 1;
+        } else {
+                /* Check for legacy IDs */
+                device_type = acpi_video_get_device_type(video, device_id);
+                /* Ignore bits 16 and 18-20 */
+                switch (device_type & 0xffe2ffff) {
                         case ACPI_VIDEO_DISPLAY_LEGACY_MONITOR:
                                 data->flags.crt = 1;
                                 break;
@@ -1054,34 +1131,24 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
                                 break;
                         default:
                                 data->flags.unknown = 1;
-                        }
                 }
+        }
 
-                acpi_video_device_bind(video, data);
-                acpi_video_device_find_cap(data);
-
-                status = acpi_install_notify_handler(device->handle,
-                                                     ACPI_DEVICE_NOTIFY,
-                                                     acpi_video_device_notify,
-                                                     data);
-                if (ACPI_FAILURE(status)) {
-                        printk(KERN_ERR PREFIX
-                                          "Error installing notify handler\n");
-                        if(data->brightness)
-                                kfree(data->brightness->levels);
-                        kfree(data->brightness);
-                        kfree(data);
-                        return -ENODEV;
-                }
+        acpi_video_device_bind(video, data);
+        acpi_video_device_find_cap(data);
 
-                mutex_lock(&video->device_list_lock);
-                list_add_tail(&data->entry, &video->video_device_list);
-                mutex_unlock(&video->device_list_lock);
+        status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+                                             acpi_video_device_notify, data);
+        if (ACPI_FAILURE(status))
+                dev_err(&device->dev, "Error installing notify handler\n");
+        else
+                data->flags.notify = 1;
 
-                return 0;
-        }
+        mutex_lock(&video->device_list_lock);
+        list_add_tail(&data->entry, &video->video_device_list);
+        mutex_unlock(&video->device_list_lock);
 
-        return -ENOENT;
+        return status;
 }
 
 /*
@@ -1268,7 +1335,8 @@ acpi_video_switch_brightness(struct acpi_video_device *device, int event)
                 goto out;
 
         result = acpi_video_device_lcd_get_level_current(device,
-                                                         &level_current, 0);
+                                                         &level_current,
+                                                         false);
         if (result)
                 goto out;
 
@@ -1373,9 +1441,8 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video,
 
                 status = acpi_video_bus_get_one_device(dev, video);
                 if (status) {
-                        printk(KERN_WARNING PREFIX
-                                        "Can't attach device\n");
-                        continue;
+                        dev_err(&dev->dev, "Can't attach device\n");
+                        break;
                 }
         }
         return status;
@@ -1388,13 +1455,14 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
         if (!device || !device->video)
                 return -ENOENT;
 
-        status = acpi_remove_notify_handler(device->dev->handle,
-                                            ACPI_DEVICE_NOTIFY,
-                                            acpi_video_device_notify);
-        if (ACPI_FAILURE(status)) {
-                printk(KERN_WARNING PREFIX
-                       "Can't remove video notify handler\n");
+        if (device->flags.notify) {
+                status = acpi_remove_notify_handler(device->dev->handle,
+                                ACPI_DEVICE_NOTIFY, acpi_video_device_notify);
+                if (ACPI_FAILURE(status))
+                        dev_err(&device->dev->dev,
+                                        "Can't remove video notify handler\n");
         }
+
         if (device->backlight) {
                 backlight_device_unregister(device->backlight);
                 device->backlight = NULL;
@@ -1676,7 +1744,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
 
         error = acpi_video_bus_get_devices(video, device);
         if (error)
-                goto err_free_video;
+                goto err_put_video;
 
         video->input = input = input_allocate_device();
         if (!input) {
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 4ac2593234e7..66f67626f02e 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -67,40 +67,37 @@ acpi_backlight_cap_match(acpi_handle handle, u32 level, void *context,
         return 0;
 }
 
-/* Returns true if the device is a video device which can be handled by
- * video.ko.
+/* Returns true if the ACPI object is a video device which can be
+ * handled by video.ko.
  * The device will get a Linux specific CID added in scan.c to
  * identify the device as an ACPI graphics device
  * Be aware that the graphics device may not be physically present
  * Use acpi_video_get_capabilities() to detect general ACPI video
  * capabilities of present cards
  */
-long acpi_is_video_device(struct acpi_device *device)
+long acpi_is_video_device(acpi_handle handle)
 {
         acpi_handle h_dummy;
         long video_caps = 0;
 
-        if (!device)
-                return 0;
-
         /* Is this device able to support video switching ? */
-        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) ||
-            ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy)))
+        if (ACPI_SUCCESS(acpi_get_handle(handle, "_DOD", &h_dummy)) ||
+            ACPI_SUCCESS(acpi_get_handle(handle, "_DOS", &h_dummy)))
                 video_caps |= ACPI_VIDEO_OUTPUT_SWITCHING;
 
         /* Is this device able to retrieve a video ROM ? */
-        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy)))
+        if (ACPI_SUCCESS(acpi_get_handle(handle, "_ROM", &h_dummy)))
                 video_caps |= ACPI_VIDEO_ROM_AVAILABLE;
 
         /* Is this device able to configure which video head to be POSTed ? */
-        if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) &&
-            ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) &&
-            ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy)))
+        if (ACPI_SUCCESS(acpi_get_handle(handle, "_VPO", &h_dummy)) &&
+            ACPI_SUCCESS(acpi_get_handle(handle, "_GPD", &h_dummy)) &&
+            ACPI_SUCCESS(acpi_get_handle(handle, "_SPD", &h_dummy)))
                 video_caps |= ACPI_VIDEO_DEVICE_POSTING;
 
         /* Only check for backlight functionality if one of the above hit. */
         if (video_caps)
-                acpi_walk_namespace(ACPI_TYPE_DEVICE, device->handle,
+                acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
                                     ACPI_UINT32_MAX, acpi_backlight_cap_match, NULL,
                                     &video_caps, NULL);
 
@@ -127,7 +124,7 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
                 if (!dev)
                         return AE_OK;
                 pci_dev_put(dev);
-                *cap |= acpi_is_video_device(acpi_dev);
+                *cap |= acpi_is_video_device(handle);
         }
         return AE_OK;
 }