7 files changed, 68 insertions, 42 deletions

diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index 5776e090359d..ba9c2da5a8c2 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -14,7 +14,7 @@ The generic thermal sysfs provides a set of interfaces for thermal zone devices
 and thermal cooling devices (fan, processor...) to register with the thermal management
 solution and to be a part of it.
 
-This how-to focusses on enabling new thermal zone and cooling devices to participate
+This how-to focuses on enabling new thermal zone and cooling devices to participate
 in thermal management.
 This solution is platform independent and any type of thermal zone devices and
 cooling devices should be able to make use of the infrastructure.
@@ -41,9 +41,9 @@ and throttle appropriate devices.
         name: the thermal zone name.
         trips: the total number of trip points this thermal zone supports.
         devdata: device private data
-        ops: thermal zone device callbacks.
+        ops: thermal zone device call-backs.
                 .bind: bind the thermal zone device with a thermal cooling device.
-                .unbind: unbing the thermal zone device with a thermal cooling device.
+                .unbind: unbind the thermal zone device with a thermal cooling device.
                 .get_temp: get the current temperature of the thermal zone.
                 .get_mode: get the current mode (user/kernel) of the thermal zone.
                            "kernel" means thermal management is done in kernel.
@@ -69,7 +69,7 @@ and throttle appropriate devices.
         It tries to bind itself to all the thermal zone devices register at the same time.
         name: the cooling device name.
         devdata: device private data.
-        ops: thermal cooling devices callbacks.
+        ops: thermal cooling devices call-backs.
                 .get_max_state: get the Maximum throttle state of the cooling device.
                 .get_cur_state: get the Current throttle state of the cooling device.
                 .set_cur_state: set the Current throttle state of the cooling device.
@@ -109,7 +109,6 @@ RO	read only value
 RW      read/write value
 
 All thermal sysfs attributes will be represented under /sys/class/thermal
-/sys/class/thermal/
 
 Thermal zone device sys I/F, created once it's registered:
 |thermal_zone[0-*]:
@@ -129,7 +128,7 @@ Thermal cooling device sys I/F, created once it's registered:
 These two dynamic attributes are created/removed in pairs.
 They represent the relationship between a thermal zone and its associated cooling device.
 They are created/removed for each
-thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device successful exection.
+thermal_zone_bind_cooling_device/thermal_zone_unbind_cooling_device successful execution.
 
 |thermal_zone[0-*]
         |-----cdev[0-*]:                The [0-*]th cooling device in the current thermal zone
@@ -147,11 +146,11 @@ type				Strings which represent the thermal zone type.
                                 Optional
 
 temp                            Current temperature as reported by thermal zone (sensor)
-                                Unit: degree celsius
+                                Unit: degree Celsius
                                 RO
                                 Required
 
-mode                            One of the predifned values in [kernel, user]
+mode                            One of the predefined values in [kernel, user]
                                 This file gives information about the algorithm
                                 that is currently managing the thermal zone.
                                 It can be either default kernel based algorithm
@@ -164,12 +163,12 @@ mode				One of the predifned values in [kernel, user]
                                           charge of the thermal management.
 
 trip_point_[0-*]_temp           The temperature above which trip point will be fired
-                                Unit: degree celsius
+                                Unit: degree Celsius
                                 RO
                                 Optional
 
 trip_point_[0-*]_type           Strings which indicate the type of the trip point
-                                Eg. it can be one of critical, hot, passive,
+                                E.g. it can be one of critical, hot, passive,
                                     active[0-*] for ACPI thermal zone.
                                 RO
                                 Optional
@@ -179,7 +178,7 @@ cdev[0-*]			Sysfs link to the thermal cooling device node where the sys I/F
                                 RO
                                 Optional
 
-cdev[0-*]_trip_point            The trip point with which cdev[0-*] is assocated in this thermal zone
+cdev[0-*]_trip_point            The trip point with which cdev[0-*] is associated in this thermal zone
                                 -1 means the cooling device is not associated with any trip point.
                                 RO
                                 Optional
@@ -211,7 +210,7 @@ cur_state			The current cooling state of this cooling device.
 
 ACPI thermal zone may support multiple trip points like critical/hot/passive/active.
 If an ACPI thermal zone supports critical, passive, active[0] and active[1] at the same time,
-it may register itself as a thermale_zone_device (thermal_zone1) with 4 trip points in all.
+it may register itself as a thermal_zone_device (thermal_zone1) with 4 trip points in all.
 It has one processor and one fan, which are both registered as thermal_cooling_device.
 If the processor is listed in _PSL method, and the fan is listed in _AL0 method,
 the sys I/F structure will be built like this:
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 7ef172c2a1d6..f688c214be0c 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -204,13 +204,25 @@ config ACPI_NUMA
 
 config ACPI_WMI
         tristate "WMI (EXPERIMENTAL)"
+        depends on X86
         depends on EXPERIMENTAL
         help
-          This driver adds support for the ACPI-WMI mapper device (PNP0C14)
-          found on some systems.
+          This driver adds support for the ACPI-WMI (Windows Management
+          Instrumentation) mapper device (PNP0C14) found on some systems.
+
+          ACPI-WMI is a proprietary extension to ACPI to expose parts of the
+          ACPI firmware to userspace - this is done through various vendor
+          defined methods and data blocks in a PNP0C14 device, which are then
+          made available for userspace to call.
+
+          The implementation of this in Linux currently only exposes this to
+          other kernel space drivers.
+
+          This driver is a required dependency to build the firmware specific
+          drivers needed on many machines, including Acer and HP laptops.
 
-          NOTE: You will need another driver or userspace application on top of
-          this to actually use anything defined in the ACPI-WMI mapper.
+          It is safe to enable this driver even if your DSDT doesn't define
+          any ACPI-WMI devices.
 
 config ACPI_ASUS
         tristate "ASUS/Medion Laptop Extras"
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 27ccd68b8f46..a14501c98f40 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -343,7 +343,7 @@ struct acpi_table_header *acpi_find_dsdt_initrd(void)
         struct kstat stat;
         char *ramfs_dsdt_name = "/DSDT.aml";
 
-        printk(KERN_INFO PREFIX "Checking initramfs for custom DSDT");
+        printk(KERN_INFO PREFIX "Checking initramfs for custom DSDT\n");
 
         /*
          * Never do this at home, only the user-space is allowed to open a file.
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index f32010bee4d5..b477a4be8a69 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -50,6 +50,10 @@ ACPI_MODULE_NAME("processor_perflib");
 
 static DEFINE_MUTEX(performance_mutex);
 
+/* Use cpufreq debug layer for _PPC changes. */
+#define cpufreq_printk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, \
+                                                "cpufreq-core", msg)
+
 /*
  * _PPC support is implemented as a CPUfreq policy notifier:
  * This means each time a CPUfreq driver registered also with
@@ -131,6 +135,9 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
                 return -ENODEV;
         }
 
+        cpufreq_printk("CPU %d: _PPC is %d - frequency %s limited\n", pr->id,
+                       (int)ppc, ppc ? "" : "not");
+
         pr->performance_platform_limit = (int)ppc;
 
         return 0;
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 7b5220ca7d7f..4e7f0002ad5f 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -97,9 +97,9 @@ config ACER_WMI
         depends on X86
         depends on EXPERIMENTAL
         depends on ACPI
-        depends on ACPI_WMI
         depends on LEDS_CLASS
         depends on BACKLIGHT_CLASS_DEVICE
+        select ACPI_WMI
         ---help---
           This is a driver for newer Acer (and Wistron) laptops. It adds
           wireless radio and bluetooth control, and on some laptops,
@@ -146,7 +146,7 @@ config TC1100_WMI
         tristate "HP Compaq TC1100 Tablet WMI Extras"
         depends on X86 && !X86_64
         depends on ACPI
-        depends on ACPI_WMI
+        select ACPI_WMI
         ---help---
           This is a driver for the WMI extensions (wireless and bluetooth power
           control) of the HP Compaq TC1100 tablet.
@@ -279,6 +279,7 @@ config ATMEL_SSC
 config INTEL_MENLOW
         tristate "Thermal Management driver for Intel menlow platform"
         depends on ACPI_THERMAL
+        depends on X86
         ---help---
           ACPI thermal management enhancement driver on
           Intel Menlow platform.
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 9b3f61200000..69f19f224875 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -9,7 +9,7 @@ menuconfig THERMAL
           Generic Thermal Sysfs driver offers a generic mechanism for
           thermal management. Usually it's made up of one or more thermal
           zone and cooling device.
-          each thermal zone contains its own temperature, trip points,
+          Each thermal zone contains its own temperature, trip points,
           cooling devices.
           All platforms with ACPI thermal support can use this driver.
-          If you want this support, you should say Y here
+          If you want this support, you should say Y here.
diff --git a/drivers/thermal/thermal.c b/drivers/thermal/thermal.c
index 3273e348fd14..e782b3e7fcdb 100644
--- a/drivers/thermal/thermal.c
+++ b/drivers/thermal/thermal.c
@@ -267,7 +267,7 @@ thermal_cooling_device_cur_state_store(struct device *dev,
 }
 
 static struct device_attribute dev_attr_cdev_type =
-                __ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
+__ATTR(type, 0444, thermal_cooling_device_type_show, NULL);
 static DEVICE_ATTR(max_state, 0444,
                    thermal_cooling_device_max_state_show, NULL);
 static DEVICE_ATTR(cur_state, 0644,
@@ -276,7 +276,7 @@ static DEVICE_ATTR(cur_state, 0644,
 
 static ssize_t
 thermal_cooling_device_trip_point_show(struct device *dev,
-                                    struct device_attribute *attr, char *buf)
+                                       struct device_attribute *attr, char *buf)
 {
         struct thermal_cooling_device_instance *instance;
 
@@ -293,11 +293,12 @@ thermal_cooling_device_trip_point_show(struct device *dev,
 
 /**
  * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
- * this function is usually called in the thermal zone device .bind callback.
  * @tz:         thermal zone device
  * @trip:       indicates which trip point the cooling devices is
  *              associated with in this thermal zone.
  * @cdev:       thermal cooling device
+ *
+ * This function is usually called in the thermal zone device .bind callback.
  */
 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
                                      int trip,
@@ -307,8 +308,7 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
         struct thermal_cooling_device_instance *pos;
         int result;
 
-        if (trip >= tz->trips ||
-            (trip < 0 && trip != THERMAL_TRIPS_NONE))
+        if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
                 return -EINVAL;
 
         if (!tz || !cdev)
@@ -361,15 +361,17 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
         kfree(dev);
         return result;
 }
+
 EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
 
 /**
  * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
- * this function is usually called in the thermal zone device .unbind callback.
  * @tz:         thermal zone device
  * @trip:       indicates which trip point the cooling devices is
  *              associated with in this thermal zone.
  * @cdev:       thermal cooling device
+ *
+ * This function is usually called in the thermal zone device .unbind callback.
  */
 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
                                        int trip,
@@ -379,8 +381,7 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
 
         mutex_lock(&tz->lock);
         list_for_each_entry_safe(pos, next, &tz->cooling_devices, node) {
-                if (pos->tz == tz && pos->trip == trip
-                    && pos->cdev == cdev) {
+                if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
                         list_del(&pos->node);
                         mutex_unlock(&tz->lock);
                         goto unbind;
@@ -397,6 +398,7 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
         kfree(pos);
         return 0;
 }
+
 EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
 
 static void thermal_release(struct device *dev)
@@ -425,7 +427,10 @@ static struct class thermal_class = {
  * @ops:                standard thermal cooling devices callbacks.
  */
 struct thermal_cooling_device *thermal_cooling_device_register(char *type,
-                       void *devdata, struct thermal_cooling_device_ops *ops)
+                                                               void *devdata,
+                                                               struct
+                                                               thermal_cooling_device_ops
+                                                               *ops)
 {
         struct thermal_cooling_device *cdev;
         struct thermal_zone_device *pos;
@@ -435,7 +440,7 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
                 return NULL;
 
         if (!ops || !ops->get_max_state || !ops->get_cur_state ||
-                !ops->set_cur_state)
+            !ops->set_cur_state)
                 return NULL;
 
         cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
@@ -462,8 +467,7 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
 
         /* sys I/F */
         if (type) {
-                result = device_create_file(&cdev->device,
-                                            &dev_attr_cdev_type);
+                result = device_create_file(&cdev->device, &dev_attr_cdev_type);
                 if (result)
                         goto unregister;
         }
@@ -496,11 +500,11 @@ struct thermal_cooling_device *thermal_cooling_device_register(char *type,
         device_unregister(&cdev->device);
         return NULL;
 }
+
 EXPORT_SYMBOL(thermal_cooling_device_register);
 
 /**
  * thermal_cooling_device_unregister - removes the registered thermal cooling device
- *
  * @cdev:       the thermal cooling device to remove.
  *
  * thermal_cooling_device_unregister() must be called when the device is no
@@ -533,8 +537,7 @@ void thermal_cooling_device_unregister(struct
         }
         mutex_unlock(&thermal_list_lock);
         if (cdev->type[0])
-                device_remove_file(&cdev->device,
-                                   &dev_attr_cdev_type);
+                device_remove_file(&cdev->device, &dev_attr_cdev_type);
         device_remove_file(&cdev->device, &dev_attr_max_state);
         device_remove_file(&cdev->device, &dev_attr_cur_state);
 
@@ -542,6 +545,7 @@ void thermal_cooling_device_unregister(struct
         device_unregister(&cdev->device);
         return;
 }
+
 EXPORT_SYMBOL(thermal_cooling_device_unregister);
 
 /**
@@ -555,8 +559,10 @@ EXPORT_SYMBOL(thermal_cooling_device_unregister);
  * longer needed.
  */
 struct thermal_zone_device *thermal_zone_device_register(char *type,
-                                        int trips, void *devdata,
-                                        struct thermal_zone_device_ops *ops)
+                                                         int trips,
+                                                         void *devdata, struct
+                                                         thermal_zone_device_ops
+                                                         *ops)
 {
         struct thermal_zone_device *tz;
         struct thermal_cooling_device *pos;
@@ -625,9 +631,9 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
         list_add_tail(&tz->node, &thermal_tz_list);
         if (ops->bind)
                 list_for_each_entry(pos, &thermal_cdev_list, node) {
-                        result = ops->bind(tz, pos);
-                        if (result)
-                                break;
+                result = ops->bind(tz, pos);
+                if (result)
+                        break;
                 }
         mutex_unlock(&thermal_list_lock);
 
@@ -639,11 +645,11 @@ struct thermal_zone_device *thermal_zone_device_register(char *type,
         device_unregister(&tz->device);
         return NULL;
 }
+
 EXPORT_SYMBOL(thermal_zone_device_register);
 
 /**
  * thermal_device_unregister - removes the registered thermal zone device
- *
  * @tz: the thermal zone device to remove
  */
 void thermal_zone_device_unregister(struct thermal_zone_device *tz)
@@ -685,6 +691,7 @@ void thermal_zone_device_unregister(struct thermal_zone_device *tz)
         device_unregister(&tz->device);
         return;
 }
+
 EXPORT_SYMBOL(thermal_zone_device_unregister);
 
 static int __init thermal_init(void)