Message-ID: <515980FB.2030201@ti.com>
Date:	Mon, 1 Apr 2013 08:43:39 -0400
From:	Eduardo Valentin <eduardo.valentin@...com>
To:	Zhang Rui <rui.zhang@...el.com>
CC:	<linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<amit.daniel@...sung.com>, <durgadoss.r@...el.com>, <andi@...as.de>
Subject: Re: [RFC,1/5] Thermal: rename thermal_sys.c to thermal_core.c

Hey Rui,

On 27-03-2013 22:40, Zhang Rui wrote:
> On Tue, 2013-03-26 at 18:04 -0400, Eduardo Valentin wrote:
>> Hi Rui,
>>
>> A side note:
>> I'd really appreciate if you could copy on your patches on
>> drivers/thermal/. I had some issues with TI server and got un subscribed
>> from linux-pm. Now I will try to catch up any way,
>>
> sure.
>
>> Some comments.
>>
>> On 26-03-2013 12:26, Zhang Rui wrote:
>>> No functional change in this patch.
>>>
>>
>> Just a better description would also help on code version control.
>>
> will add it in V2.
>
>>> Signed-off-by: Zhang Rui <rui.zhang@...el.com>
>>
>> Apart from minor comments, I agreed with this change. So feel free to
>> add my:
>>
>> Acked-by: Eduardo Valentin <eduardo.valentin@...com>
>>
> thanks!
>
>>>
>>> ---
>>> drivers/thermal/Makefile       |    1 +
>>>    drivers/thermal/thermal_core.c | 1888 ++++++++++++++++++++++++++++++++++++++++
>>>    drivers/thermal/thermal_sys.c  | 1888 ----------------------------------------
>>
>> When sending renames, use git format-patch --find-renames, it makes a
>> better summary of what you have done, specially if you have changed
>> something in the file while renaming.
>>
> a useful tip. thanks!
>>>    3 files changed, 1889 insertions(+), 1888 deletions(-)
>>>    create mode 100644 drivers/thermal/thermal_core.c
>>>    delete mode 100644 drivers/thermal/thermal_sys.c
>>>
>>> diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile
>>> index d3a2b38..b2009bd 100644
>>> --- a/drivers/thermal/Makefile
>>> +++ b/drivers/thermal/Makefile
>>> @@ -3,6 +3,7 @@
>>>    #
>>>
>>>    obj-$(CONFIG_THERMAL)		+= thermal_sys.o
>>
>> I know this is for fixing the annoying bug with fan max speed. But while
>> still here, do you think 'thermal_sys' is a good name for thermal
>> framework driver? Maybe just 'thermal' would suffice?
>>
> as I said, there is already a thermal driver, aka,
> driver/acpi/thermal.c.
>

In fact there is. On the other hand, it does not imply that this naming 
convention is correct, right?

Unless you have a strong requirement to name these drivers the way it 
is, I'd suggest to take the opportunity to rename them. 
drivers/acpi/thermal.c could be named 'thermal-acpi.ko', if this does 
not violate any ACPI requirements. While this driver, 
drivers/thermal/thermal_sys.c, would be named only 'thermal.ko'.


> thanks,

Regards,

Ed

> rui
>>> +thermal_sys-y			+= thermal_core.o
>>>
>>>    # governors
>>>    obj-$(CONFIG_THERMAL_GOV_FAIR_SHARE)	+= fair_share.o
>>> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
>>> new file mode 100644
>>> index 0000000..5b7863a
>>> --- /dev/null
>>> +++ b/drivers/thermal/thermal_core.c
>>> @@ -0,0 +1,1888 @@
>>> +/*
>>> + *  thermal.c - Generic Thermal Management Sysfs support.
>>> + *
>>> + *  Copyright (C) 2008 Intel Corp
>>> + *  Copyright (C) 2008 Zhang Rui <rui.zhang@...el.com>
>>> + *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@...el.com>
>>> + *
>>> + *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> + *
>>> + *  This program is free software; you can redistribute it and/or modify
>>> + *  it under the terms of the GNU General Public License as published by
>>> + *  the Free Software Foundation; version 2 of the License.
>>> + *
>>> + *  This program is distributed in the hope that it will be useful, but
>>> + *  WITHOUT ANY WARRANTY; without even the implied warranty of
>>> + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
>>> + *  General Public License for more details.
>>> + *
>>> + *  You should have received a copy of the GNU General Public License along
>>> + *  with this program; if not, write to the Free Software Foundation, Inc.,
>>> + *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
>>> + *
>>> + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> + */
>>> +
>>> +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>>> +
>>> +#include <linux/module.h>
>>> +#include <linux/device.h>
>>> +#include <linux/err.h>
>>> +#include <linux/slab.h>
>>> +#include <linux/kdev_t.h>
>>> +#include <linux/idr.h>
>>> +#include <linux/thermal.h>
>>> +#include <linux/reboot.h>
>>> +#include <net/netlink.h>
>>> +#include <net/genetlink.h>
>>> +
>>> +#include "thermal_core.h"
>>> +
>>> +MODULE_AUTHOR("Zhang Rui");
>>> +MODULE_DESCRIPTION("Generic thermal management sysfs support");
>>> +MODULE_LICENSE("GPL");
>>> +
>>> +static DEFINE_IDR(thermal_tz_idr);
>>> +static DEFINE_IDR(thermal_cdev_idr);
>>> +static DEFINE_MUTEX(thermal_idr_lock);
>>> +
>>> +static LIST_HEAD(thermal_tz_list);
>>> +static LIST_HEAD(thermal_cdev_list);
>>> +static LIST_HEAD(thermal_governor_list);
>>> +
>>> +static DEFINE_MUTEX(thermal_list_lock);
>>> +static DEFINE_MUTEX(thermal_governor_lock);
>>> +
>>> +static struct thermal_governor *__find_governor(const char *name)
>>> +{
>>> +	struct thermal_governor *pos;
>>> +
>>> +	list_for_each_entry(pos, &thermal_governor_list, governor_list)
>>> +		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
>>> +			return pos;
>>> +
>>> +	return NULL;
>>> +}
>>> +
>>> +int thermal_register_governor(struct thermal_governor *governor)
>>> +{
>>> +	int err;
>>> +	const char *name;
>>> +	struct thermal_zone_device *pos;
>>> +
>>> +	if (!governor)
>>> +		return -EINVAL;
>>> +
>>> +	mutex_lock(&thermal_governor_lock);
>>> +
>>> +	err = -EBUSY;
>>> +	if (__find_governor(governor->name) == NULL) {
>>> +		err = 0;
>>> +		list_add(&governor->governor_list, &thermal_governor_list);
>>> +	}
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +
>>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> +		if (pos->governor)
>>> +			continue;
>>> +		if (pos->tzp)
>>> +			name = pos->tzp->governor_name;
>>> +		else
>>> +			name = DEFAULT_THERMAL_GOVERNOR;
>>> +		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
>>> +			pos->governor = governor;
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +	mutex_unlock(&thermal_governor_lock);
>>> +
>>> +	return err;
>>> +}
>>> +EXPORT_SYMBOL_GPL(thermal_register_governor);
>>> +
>>> +void thermal_unregister_governor(struct thermal_governor *governor)
>>> +{
>>> +	struct thermal_zone_device *pos;
>>> +
>>> +	if (!governor)
>>> +		return;
>>> +
>>> +	mutex_lock(&thermal_governor_lock);
>>> +
>>> +	if (__find_governor(governor->name) == NULL)
>>> +		goto exit;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +
>>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> +		if (!strnicmp(pos->governor->name, governor->name,
>>> +						THERMAL_NAME_LENGTH))
>>> +			pos->governor = NULL;
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +	list_del(&governor->governor_list);
>>> +exit:
>>> +	mutex_unlock(&thermal_governor_lock);
>>> +	return;
>>> +}
>>> +EXPORT_SYMBOL_GPL(thermal_unregister_governor);
>>> +
>>> +static int get_idr(struct idr *idr, struct mutex *lock, int *id)
>>> +{
>>> +	int ret;
>>> +
>>> +	if (lock)
>>> +		mutex_lock(lock);
>>> +	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
>>> +	if (lock)
>>> +		mutex_unlock(lock);
>>> +	if (unlikely(ret < 0))
>>> +		return ret;
>>> +	*id = ret;
>>> +	return 0;
>>> +}
>>> +
>>> +static void release_idr(struct idr *idr, struct mutex *lock, int id)
>>> +{
>>> +	if (lock)
>>> +		mutex_lock(lock);
>>> +	idr_remove(idr, id);
>>> +	if (lock)
>>> +		mutex_unlock(lock);
>>> +}
>>> +
>>> +int get_tz_trend(struct thermal_zone_device *tz, int trip)
>>> +{
>>> +	enum thermal_trend trend;
>>> +
>>> +	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
>>> +		if (tz->temperature > tz->last_temperature)
>>> +			trend = THERMAL_TREND_RAISING;
>>> +		else if (tz->temperature < tz->last_temperature)
>>> +			trend = THERMAL_TREND_DROPPING;
>>> +		else
>>> +			trend = THERMAL_TREND_STABLE;
>>> +	}
>>> +
>>> +	return trend;
>>> +}
>>> +EXPORT_SYMBOL(get_tz_trend);
>>> +
>>> +struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
>>> +			struct thermal_cooling_device *cdev, int trip)
>>> +{
>>> +	struct thermal_instance *pos = NULL;
>>> +	struct thermal_instance *target_instance = NULL;
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +	mutex_lock(&cdev->lock);
>>> +
>>> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
>>> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> +			target_instance = pos;
>>> +			break;
>>> +		}
>>> +	}
>>> +
>>> +	mutex_unlock(&cdev->lock);
>>> +	mutex_unlock(&tz->lock);
>>> +
>>> +	return target_instance;
>>> +}
>>> +EXPORT_SYMBOL(get_thermal_instance);
>>> +
>>> +static void print_bind_err_msg(struct thermal_zone_device *tz,
>>> +			struct thermal_cooling_device *cdev, int ret)
>>> +{
>>> +	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
>>> +				tz->type, cdev->type, ret);
>>> +}
>>> +
>>> +static void __bind(struct thermal_zone_device *tz, int mask,
>>> +			struct thermal_cooling_device *cdev)
>>> +{
>>> +	int i, ret;
>>> +
>>> +	for (i = 0; i < tz->trips; i++) {
>>> +		if (mask & (1 << i)) {
>>> +			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
>>> +					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
>>> +			if (ret)
>>> +				print_bind_err_msg(tz, cdev, ret);
>>> +		}
>>> +	}
>>> +}
>>> +
>>> +static void __unbind(struct thermal_zone_device *tz, int mask,
>>> +			struct thermal_cooling_device *cdev)
>>> +{
>>> +	int i;
>>> +
>>> +	for (i = 0; i < tz->trips; i++)
>>> +		if (mask & (1 << i))
>>> +			thermal_zone_unbind_cooling_device(tz, i, cdev);
>>> +}
>>> +
>>> +static void bind_cdev(struct thermal_cooling_device *cdev)
>>> +{
>>> +	int i, ret;
>>> +	const struct thermal_zone_params *tzp;
>>> +	struct thermal_zone_device *pos = NULL;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +
>>> +	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> +		if (!pos->tzp && !pos->ops->bind)
>>> +			continue;
>>> +
>>> +		if (!pos->tzp && pos->ops->bind) {
>>> +			ret = pos->ops->bind(pos, cdev);
>>> +			if (ret)
>>> +				print_bind_err_msg(pos, cdev, ret);
>>> +		}
>>> +
>>> +		tzp = pos->tzp;
>>> +		if (!tzp || !tzp->tbp)
>>> +			continue;
>>> +
>>> +		for (i = 0; i < tzp->num_tbps; i++) {
>>> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
>>> +				continue;
>>> +			if (tzp->tbp[i].match(pos, cdev))
>>> +				continue;
>>> +			tzp->tbp[i].cdev = cdev;
>>> +			__bind(pos, tzp->tbp[i].trip_mask, cdev);
>>> +		}
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +}
>>> +
>>> +static void bind_tz(struct thermal_zone_device *tz)
>>> +{
>>> +	int i, ret;
>>> +	struct thermal_cooling_device *pos = NULL;
>>> +	const struct thermal_zone_params *tzp = tz->tzp;
>>> +
>>> +	if (!tzp && !tz->ops->bind)
>>> +		return;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +
>>> +	/* If there is no platform data, try to use ops->bind */
>>> +	if (!tzp && tz->ops->bind) {
>>> +		list_for_each_entry(pos, &thermal_cdev_list, node) {
>>> +			ret = tz->ops->bind(tz, pos);
>>> +			if (ret)
>>> +				print_bind_err_msg(tz, pos, ret);
>>> +		}
>>> +		goto exit;
>>> +	}
>>> +
>>> +	if (!tzp || !tzp->tbp)
>>> +		goto exit;
>>> +
>>> +	list_for_each_entry(pos, &thermal_cdev_list, node) {
>>> +		for (i = 0; i < tzp->num_tbps; i++) {
>>> +			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
>>> +				continue;
>>> +			if (tzp->tbp[i].match(tz, pos))
>>> +				continue;
>>> +			tzp->tbp[i].cdev = pos;
>>> +			__bind(tz, tzp->tbp[i].trip_mask, pos);
>>> +		}
>>> +	}
>>> +exit:
>>> +	mutex_unlock(&thermal_list_lock);
>>> +}
>>> +
>>> +static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
>>> +					    int delay)
>>> +{
>>> +	if (delay > 1000)
>>> +		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
>>> +				 round_jiffies(msecs_to_jiffies(delay)));
>>> +	else if (delay)
>>> +		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
>>> +				 msecs_to_jiffies(delay));
>>> +	else
>>> +		cancel_delayed_work(&tz->poll_queue);
>>> +}
>>> +
>>> +static void monitor_thermal_zone(struct thermal_zone_device *tz)
>>> +{
>>> +	mutex_lock(&tz->lock);
>>> +
>>> +	if (tz->passive)
>>> +		thermal_zone_device_set_polling(tz, tz->passive_delay);
>>> +	else if (tz->polling_delay)
>>> +		thermal_zone_device_set_polling(tz, tz->polling_delay);
>>> +	else
>>> +		thermal_zone_device_set_polling(tz, 0);
>>> +
>>> +	mutex_unlock(&tz->lock);
>>> +}
>>> +
>>> +static void handle_non_critical_trips(struct thermal_zone_device *tz,
>>> +			int trip, enum thermal_trip_type trip_type)
>>> +{
>>> +	if (tz->governor)
>>> +		tz->governor->throttle(tz, trip);
>>> +}
>>> +
>>> +static void handle_critical_trips(struct thermal_zone_device *tz,
>>> +				int trip, enum thermal_trip_type trip_type)
>>> +{
>>> +	long trip_temp;
>>> +
>>> +	tz->ops->get_trip_temp(tz, trip, &trip_temp);
>>> +
>>> +	/* If we have not crossed the trip_temp, we do not care. */
>>> +	if (tz->temperature < trip_temp)
>>> +		return;
>>> +
>>> +	if (tz->ops->notify)
>>> +		tz->ops->notify(tz, trip, trip_type);
>>> +
>>> +	if (trip_type == THERMAL_TRIP_CRITICAL) {
>>> +		dev_emerg(&tz->device,
>>> +			  "critical temperature reached(%d C),shutting down\n",
>>> +			  tz->temperature / 1000);
>>> +		orderly_poweroff(true);
>>> +	}
>>> +}
>>> +
>>> +static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
>>> +{
>>> +	enum thermal_trip_type type;
>>> +
>>> +	tz->ops->get_trip_type(tz, trip, &type);
>>> +
>>> +	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
>>> +		handle_critical_trips(tz, trip, type);
>>> +	else
>>> +		handle_non_critical_trips(tz, trip, type);
>>> +	/*
>>> +	 * Alright, we handled this trip successfully.
>>> +	 * So, start monitoring again.
>>> +	 */
>>> +	monitor_thermal_zone(tz);
>>> +}
>>> +
>>> +static int thermal_zone_get_temp(struct thermal_zone_device *tz,
>>> +				unsigned long *temp)
>>> +{
>>> +	int ret = 0;
>>> +#ifdef CONFIG_THERMAL_EMULATION
>>> +	int count;
>>> +	unsigned long crit_temp = -1UL;
>>> +	enum thermal_trip_type type;
>>> +#endif
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +
>>> +	ret = tz->ops->get_temp(tz, temp);
>>> +#ifdef CONFIG_THERMAL_EMULATION
>>> +	if (!tz->emul_temperature)
>>> +		goto skip_emul;
>>> +
>>> +	for (count = 0; count < tz->trips; count++) {
>>> +		ret = tz->ops->get_trip_type(tz, count, &type);
>>> +		if (!ret && type == THERMAL_TRIP_CRITICAL) {
>>> +			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
>>> +			break;
>>> +		}
>>> +	}
>>> +
>>> +	if (ret)
>>> +		goto skip_emul;
>>> +
>>> +	if (*temp < crit_temp)
>>> +		*temp = tz->emul_temperature;
>>> +skip_emul:
>>> +#endif
>>> +	mutex_unlock(&tz->lock);
>>> +	return ret;
>>> +}
>>> +
>>> +static void update_temperature(struct thermal_zone_device *tz)
>>> +{
>>> +	long temp;
>>> +	int ret;
>>> +
>>> +	ret = thermal_zone_get_temp(tz, &temp);
>>> +	if (ret) {
>>> +		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
>>> +			 tz->id);
>>> +		return;
>>> +	}
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +	tz->last_temperature = tz->temperature;
>>> +	tz->temperature = temp;
>>> +	mutex_unlock(&tz->lock);
>>> +}
>>> +
>>> +void thermal_zone_device_update(struct thermal_zone_device *tz)
>>> +{
>>> +	int count;
>>> +
>>> +	update_temperature(tz);
>>> +
>>> +	for (count = 0; count < tz->trips; count++)
>>> +		handle_thermal_trip(tz, count);
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_device_update);
>>> +
>>> +static void thermal_zone_device_check(struct work_struct *work)
>>> +{
>>> +	struct thermal_zone_device *tz = container_of(work, struct
>>> +						      thermal_zone_device,
>>> +						      poll_queue.work);
>>> +	thermal_zone_device_update(tz);
>>> +}
>>> +
>>> +/* sys I/F for thermal zone */
>>> +
>>> +#define to_thermal_zone(_dev) \
>>> +	container_of(_dev, struct thermal_zone_device, device)
>>> +
>>> +static ssize_t
>>> +type_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +
>>> +	return sprintf(buf, "%s\n", tz->type);
>>> +}
>>> +
>>> +static ssize_t
>>> +temp_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	long temperature;
>>> +	int ret;
>>> +
>>> +	ret = thermal_zone_get_temp(tz, &temperature);
>>> +
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	return sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +static ssize_t
>>> +mode_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	enum thermal_device_mode mode;
>>> +	int result;
>>> +
>>> +	if (!tz->ops->get_mode)
>>> +		return -EPERM;
>>> +
>>> +	result = tz->ops->get_mode(tz, &mode);
>>> +	if (result)
>>> +		return result;
>>> +
>>> +	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
>>> +		       : "disabled");
>>> +}
>>> +
>>> +static ssize_t
>>> +mode_store(struct device *dev, struct device_attribute *attr,
>>> +	   const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int result;
>>> +
>>> +	if (!tz->ops->set_mode)
>>> +		return -EPERM;
>>> +
>>> +	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
>>> +		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
>>> +	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
>>> +		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
>>> +	else
>>> +		result = -EINVAL;
>>> +
>>> +	if (result)
>>> +		return result;
>>> +
>>> +	return count;
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_type_show(struct device *dev, struct device_attribute *attr,
>>> +		     char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	enum thermal_trip_type type;
>>> +	int trip, result;
>>> +
>>> +	if (!tz->ops->get_trip_type)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	result = tz->ops->get_trip_type(tz, trip, &type);
>>> +	if (result)
>>> +		return result;
>>> +
>>> +	switch (type) {
>>> +	case THERMAL_TRIP_CRITICAL:
>>> +		return sprintf(buf, "critical\n");
>>> +	case THERMAL_TRIP_HOT:
>>> +		return sprintf(buf, "hot\n");
>>> +	case THERMAL_TRIP_PASSIVE:
>>> +		return sprintf(buf, "passive\n");
>>> +	case THERMAL_TRIP_ACTIVE:
>>> +		return sprintf(buf, "active\n");
>>> +	default:
>>> +		return sprintf(buf, "unknown\n");
>>> +	}
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_temp_store(struct device *dev, struct device_attribute *attr,
>>> +		     const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int trip, ret;
>>> +	unsigned long temperature;
>>> +
>>> +	if (!tz->ops->set_trip_temp)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	if (kstrtoul(buf, 10, &temperature))
>>> +		return -EINVAL;
>>> +
>>> +	ret = tz->ops->set_trip_temp(tz, trip, temperature);
>>> +
>>> +	return ret ? ret : count;
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_temp_show(struct device *dev, struct device_attribute *attr,
>>> +		     char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int trip, ret;
>>> +	long temperature;
>>> +
>>> +	if (!tz->ops->get_trip_temp)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
>>> +
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	return sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
>>> +			const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int trip, ret;
>>> +	unsigned long temperature;
>>> +
>>> +	if (!tz->ops->set_trip_hyst)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	if (kstrtoul(buf, 10, &temperature))
>>> +		return -EINVAL;
>>> +
>>> +	/*
>>> +	 * We are not doing any check on the 'temperature' value
>>> +	 * here. The driver implementing 'set_trip_hyst' has to
>>> +	 * take care of this.
>>> +	 */
>>> +	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
>>> +
>>> +	return ret ? ret : count;
>>> +}
>>> +
>>> +static ssize_t
>>> +trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
>>> +			char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int trip, ret;
>>> +	unsigned long temperature;
>>> +
>>> +	if (!tz->ops->get_trip_hyst)
>>> +		return -EPERM;
>>> +
>>> +	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
>>> +		return -EINVAL;
>>> +
>>> +	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
>>> +
>>> +	return ret ? ret : sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +static ssize_t
>>> +passive_store(struct device *dev, struct device_attribute *attr,
>>> +		    const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	struct thermal_cooling_device *cdev = NULL;
>>> +	int state;
>>> +
>>> +	if (!sscanf(buf, "%d\n", &state))
>>> +		return -EINVAL;
>>> +
>>> +	/* sanity check: values below 1000 millicelcius don't make sense
>>> +	 * and can cause the system to go into a thermal heart attack
>>> +	 */
>>> +	if (state && state < 1000)
>>> +		return -EINVAL;
>>> +
>>> +	if (state && !tz->forced_passive) {
>>> +		mutex_lock(&thermal_list_lock);
>>> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> +			if (!strncmp("Processor", cdev->type,
>>> +				     sizeof("Processor")))
>>> +				thermal_zone_bind_cooling_device(tz,
>>> +						THERMAL_TRIPS_NONE, cdev,
>>> +						THERMAL_NO_LIMIT,
>>> +						THERMAL_NO_LIMIT);
>>> +		}
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		if (!tz->passive_delay)
>>> +			tz->passive_delay = 1000;
>>> +	} else if (!state && tz->forced_passive) {
>>> +		mutex_lock(&thermal_list_lock);
>>> +		list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> +			if (!strncmp("Processor", cdev->type,
>>> +				     sizeof("Processor")))
>>> +				thermal_zone_unbind_cooling_device(tz,
>>> +								   THERMAL_TRIPS_NONE,
>>> +								   cdev);
>>> +		}
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		tz->passive_delay = 0;
>>> +	}
>>> +
>>> +	tz->forced_passive = state;
>>> +
>>> +	thermal_zone_device_update(tz);
>>> +
>>> +	return count;
>>> +}
>>> +
>>> +static ssize_t
>>> +passive_show(struct device *dev, struct device_attribute *attr,
>>> +		   char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +
>>> +	return sprintf(buf, "%d\n", tz->forced_passive);
>>> +}
>>> +
>>> +static ssize_t
>>> +policy_store(struct device *dev, struct device_attribute *attr,
>>> +		    const char *buf, size_t count)
>>> +{
>>> +	int ret = -EINVAL;
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	struct thermal_governor *gov;
>>> +
>>> +	mutex_lock(&thermal_governor_lock);
>>> +
>>> +	gov = __find_governor(buf);
>>> +	if (!gov)
>>> +		goto exit;
>>> +
>>> +	tz->governor = gov;
>>> +	ret = count;
>>> +
>>> +exit:
>>> +	mutex_unlock(&thermal_governor_lock);
>>> +	return ret;
>>> +}
>>> +
>>> +static ssize_t
>>> +policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +
>>> +	return sprintf(buf, "%s\n", tz->governor->name);
>>> +}
>>> +
>>> +#ifdef CONFIG_THERMAL_EMULATION
>>> +static ssize_t
>>> +emul_temp_store(struct device *dev, struct device_attribute *attr,
>>> +		     const char *buf, size_t count)
>>> +{
>>> +	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> +	int ret = 0;
>>> +	unsigned long temperature;
>>> +
>>> +	if (kstrtoul(buf, 10, &temperature))
>>> +		return -EINVAL;
>>> +
>>> +	if (!tz->ops->set_emul_temp) {
>>> +		mutex_lock(&tz->lock);
>>> +		tz->emul_temperature = temperature;
>>> +		mutex_unlock(&tz->lock);
>>> +	} else {
>>> +		ret = tz->ops->set_emul_temp(tz, temperature);
>>> +	}
>>> +
>>> +	return ret ? ret : count;
>>> +}
>>> +static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
>>> +#endif/*CONFIG_THERMAL_EMULATION*/
>>> +
>>> +static DEVICE_ATTR(type, 0444, type_show, NULL);
>>> +static DEVICE_ATTR(temp, 0444, temp_show, NULL);
>>> +static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
>>> +static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
>>> +static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
>>> +
>>> +/* sys I/F for cooling device */
>>> +#define to_cooling_device(_dev)	\
>>> +	container_of(_dev, struct thermal_cooling_device, device)
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_type_show(struct device *dev,
>>> +				 struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> +
>>> +	return sprintf(buf, "%s\n", cdev->type);
>>> +}
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_max_state_show(struct device *dev,
>>> +				      struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> +	unsigned long state;
>>> +	int ret;
>>> +
>>> +	ret = cdev->ops->get_max_state(cdev, &state);
>>> +	if (ret)
>>> +		return ret;
>>> +	return sprintf(buf, "%ld\n", state);
>>> +}
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_cur_state_show(struct device *dev,
>>> +				      struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> +	unsigned long state;
>>> +	int ret;
>>> +
>>> +	ret = cdev->ops->get_cur_state(cdev, &state);
>>> +	if (ret)
>>> +		return ret;
>>> +	return sprintf(buf, "%ld\n", state);
>>> +}
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_cur_state_store(struct device *dev,
>>> +				       struct device_attribute *attr,
>>> +				       const char *buf, size_t count)
>>> +{
>>> +	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> +	unsigned long state;
>>> +	int result;
>>> +
>>> +	if (!sscanf(buf, "%ld\n", &state))
>>> +		return -EINVAL;
>>> +
>>> +	if ((long)state < 0)
>>> +		return -EINVAL;
>>> +
>>> +	result = cdev->ops->set_cur_state(cdev, state);
>>> +	if (result)
>>> +		return result;
>>> +	return count;
>>> +}
>>> +
>>> +static struct device_attribute dev_attr_cdev_type =
>>> +__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,
>>> +		   thermal_cooling_device_cur_state_show,
>>> +		   thermal_cooling_device_cur_state_store);
>>> +
>>> +static ssize_t
>>> +thermal_cooling_device_trip_point_show(struct device *dev,
>>> +				       struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_instance *instance;
>>> +
>>> +	instance =
>>> +	    container_of(attr, struct thermal_instance, attr);
>>> +
>>> +	if (instance->trip == THERMAL_TRIPS_NONE)
>>> +		return sprintf(buf, "-1\n");
>>> +	else
>>> +		return sprintf(buf, "%d\n", instance->trip);
>>> +}
>>> +
>>> +/* Device management */
>>> +
>>> +#if defined(CONFIG_THERMAL_HWMON)
>>> +
>>> +/* hwmon sys I/F */
>>> +#include <linux/hwmon.h>
>>> +
>>> +/* thermal zone devices with the same type share one hwmon device */
>>> +struct thermal_hwmon_device {
>>> +	char type[THERMAL_NAME_LENGTH];
>>> +	struct device *device;
>>> +	int count;
>>> +	struct list_head tz_list;
>>> +	struct list_head node;
>>> +};
>>> +
>>> +struct thermal_hwmon_attr {
>>> +	struct device_attribute attr;
>>> +	char name[16];
>>> +};
>>> +
>>> +/* one temperature input for each thermal zone */
>>> +struct thermal_hwmon_temp {
>>> +	struct list_head hwmon_node;
>>> +	struct thermal_zone_device *tz;
>>> +	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
>>> +	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
>>> +};
>>> +
>>> +static LIST_HEAD(thermal_hwmon_list);
>>> +
>>> +static ssize_t
>>> +name_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
>>> +	return sprintf(buf, "%s\n", hwmon->type);
>>> +}
>>> +static DEVICE_ATTR(name, 0444, name_show, NULL);
>>> +
>>> +static ssize_t
>>> +temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> +{
>>> +	long temperature;
>>> +	int ret;
>>> +	struct thermal_hwmon_attr *hwmon_attr
>>> +			= container_of(attr, struct thermal_hwmon_attr, attr);
>>> +	struct thermal_hwmon_temp *temp
>>> +			= container_of(hwmon_attr, struct thermal_hwmon_temp,
>>> +				       temp_input);
>>> +	struct thermal_zone_device *tz = temp->tz;
>>> +
>>> +	ret = thermal_zone_get_temp(tz, &temperature);
>>> +
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	return sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +static ssize_t
>>> +temp_crit_show(struct device *dev, struct device_attribute *attr,
>>> +		char *buf)
>>> +{
>>> +	struct thermal_hwmon_attr *hwmon_attr
>>> +			= container_of(attr, struct thermal_hwmon_attr, attr);
>>> +	struct thermal_hwmon_temp *temp
>>> +			= container_of(hwmon_attr, struct thermal_hwmon_temp,
>>> +				       temp_crit);
>>> +	struct thermal_zone_device *tz = temp->tz;
>>> +	long temperature;
>>> +	int ret;
>>> +
>>> +	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
>>> +	if (ret)
>>> +		return ret;
>>> +
>>> +	return sprintf(buf, "%ld\n", temperature);
>>> +}
>>> +
>>> +
>>> +static struct thermal_hwmon_device *
>>> +thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
>>> +{
>>> +	struct thermal_hwmon_device *hwmon;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
>>> +		if (!strcmp(hwmon->type, tz->type)) {
>>> +			mutex_unlock(&thermal_list_lock);
>>> +			return hwmon;
>>> +		}
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	return NULL;
>>> +}
>>> +
>>> +/* Find the temperature input matching a given thermal zone */
>>> +static struct thermal_hwmon_temp *
>>> +thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
>>> +			  const struct thermal_zone_device *tz)
>>> +{
>>> +	struct thermal_hwmon_temp *temp;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
>>> +		if (temp->tz == tz) {
>>> +			mutex_unlock(&thermal_list_lock);
>>> +			return temp;
>>> +		}
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	return NULL;
>>> +}
>>> +
>>> +static int
>>> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
>>> +{
>>> +	struct thermal_hwmon_device *hwmon;
>>> +	struct thermal_hwmon_temp *temp;
>>> +	int new_hwmon_device = 1;
>>> +	int result;
>>> +
>>> +	hwmon = thermal_hwmon_lookup_by_type(tz);
>>> +	if (hwmon) {
>>> +		new_hwmon_device = 0;
>>> +		goto register_sys_interface;
>>> +	}
>>> +
>>> +	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
>>> +	if (!hwmon)
>>> +		return -ENOMEM;
>>> +
>>> +	INIT_LIST_HEAD(&hwmon->tz_list);
>>> +	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
>>> +	hwmon->device = hwmon_device_register(NULL);
>>> +	if (IS_ERR(hwmon->device)) {
>>> +		result = PTR_ERR(hwmon->device);
>>> +		goto free_mem;
>>> +	}
>>> +	dev_set_drvdata(hwmon->device, hwmon);
>>> +	result = device_create_file(hwmon->device, &dev_attr_name);
>>> +	if (result)
>>> +		goto free_mem;
>>> +
>>> + register_sys_interface:
>>> +	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
>>> +	if (!temp) {
>>> +		result = -ENOMEM;
>>> +		goto unregister_name;
>>> +	}
>>> +
>>> +	temp->tz = tz;
>>> +	hwmon->count++;
>>> +
>>> +	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
>>> +		 "temp%d_input", hwmon->count);
>>> +	temp->temp_input.attr.attr.name = temp->temp_input.name;
>>> +	temp->temp_input.attr.attr.mode = 0444;
>>> +	temp->temp_input.attr.show = temp_input_show;
>>> +	sysfs_attr_init(&temp->temp_input.attr.attr);
>>> +	result = device_create_file(hwmon->device, &temp->temp_input.attr);
>>> +	if (result)
>>> +		goto free_temp_mem;
>>> +
>>> +	if (tz->ops->get_crit_temp) {
>>> +		unsigned long temperature;
>>> +		if (!tz->ops->get_crit_temp(tz, &temperature)) {
>>> +			snprintf(temp->temp_crit.name,
>>> +				 sizeof(temp->temp_crit.name),
>>> +				"temp%d_crit", hwmon->count);
>>> +			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
>>> +			temp->temp_crit.attr.attr.mode = 0444;
>>> +			temp->temp_crit.attr.show = temp_crit_show;
>>> +			sysfs_attr_init(&temp->temp_crit.attr.attr);
>>> +			result = device_create_file(hwmon->device,
>>> +						    &temp->temp_crit.attr);
>>> +			if (result)
>>> +				goto unregister_input;
>>> +		}
>>> +	}
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	if (new_hwmon_device)
>>> +		list_add_tail(&hwmon->node, &thermal_hwmon_list);
>>> +	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	return 0;
>>> +
>>> + unregister_input:
>>> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
>>> + free_temp_mem:
>>> +	kfree(temp);
>>> + unregister_name:
>>> +	if (new_hwmon_device) {
>>> +		device_remove_file(hwmon->device, &dev_attr_name);
>>> +		hwmon_device_unregister(hwmon->device);
>>> +	}
>>> + free_mem:
>>> +	if (new_hwmon_device)
>>> +		kfree(hwmon);
>>> +
>>> +	return result;
>>> +}
>>> +
>>> +static void
>>> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
>>> +{
>>> +	struct thermal_hwmon_device *hwmon;
>>> +	struct thermal_hwmon_temp *temp;
>>> +
>>> +	hwmon = thermal_hwmon_lookup_by_type(tz);
>>> +	if (unlikely(!hwmon)) {
>>> +		/* Should never happen... */
>>> +		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
>>> +		return;
>>> +	}
>>> +
>>> +	temp = thermal_hwmon_lookup_temp(hwmon, tz);
>>> +	if (unlikely(!temp)) {
>>> +		/* Should never happen... */
>>> +		dev_dbg(&tz->device, "temperature input lookup failed!\n");
>>> +		return;
>>> +	}
>>> +
>>> +	device_remove_file(hwmon->device, &temp->temp_input.attr);
>>> +	if (tz->ops->get_crit_temp)
>>> +		device_remove_file(hwmon->device, &temp->temp_crit.attr);
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_del(&temp->hwmon_node);
>>> +	kfree(temp);
>>> +	if (!list_empty(&hwmon->tz_list)) {
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		return;
>>> +	}
>>> +	list_del(&hwmon->node);
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	device_remove_file(hwmon->device, &dev_attr_name);
>>> +	hwmon_device_unregister(hwmon->device);
>>> +	kfree(hwmon);
>>> +}
>>> +#else
>>> +static int
>>> +thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
>>> +{
>>> +	return 0;
>>> +}
>>> +
>>> +static void
>>> +thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
>>> +{
>>> +}
>>> +#endif
>>> +
>>> +/**
>>> + * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
>>> + * @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,
>>> +				     struct thermal_cooling_device *cdev,
>>> +				     unsigned long upper, unsigned long lower)
>>> +{
>>> +	struct thermal_instance *dev;
>>> +	struct thermal_instance *pos;
>>> +	struct thermal_zone_device *pos1;
>>> +	struct thermal_cooling_device *pos2;
>>> +	unsigned long max_state;
>>> +	int result;
>>> +
>>> +	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
>>> +		return -EINVAL;
>>> +
>>> +	list_for_each_entry(pos1, &thermal_tz_list, node) {
>>> +		if (pos1 == tz)
>>> +			break;
>>> +	}
>>> +	list_for_each_entry(pos2, &thermal_cdev_list, node) {
>>> +		if (pos2 == cdev)
>>> +			break;
>>> +	}
>>> +
>>> +	if (tz != pos1 || cdev != pos2)
>>> +		return -EINVAL;
>>> +
>>> +	cdev->ops->get_max_state(cdev, &max_state);
>>> +
>>> +	/* lower default 0, upper default max_state */
>>> +	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
>>> +	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
>>> +
>>> +	if (lower > upper || upper > max_state)
>>> +		return -EINVAL;
>>> +
>>> +	dev =
>>> +	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
>>> +	if (!dev)
>>> +		return -ENOMEM;
>>> +	dev->tz = tz;
>>> +	dev->cdev = cdev;
>>> +	dev->trip = trip;
>>> +	dev->upper = upper;
>>> +	dev->lower = lower;
>>> +	dev->target = THERMAL_NO_TARGET;
>>> +
>>> +	result = get_idr(&tz->idr, &tz->lock, &dev->id);
>>> +	if (result)
>>> +		goto free_mem;
>>> +
>>> +	sprintf(dev->name, "cdev%d", dev->id);
>>> +	result =
>>> +	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
>>> +	if (result)
>>> +		goto release_idr;
>>> +
>>> +	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
>>> +	sysfs_attr_init(&dev->attr.attr);
>>> +	dev->attr.attr.name = dev->attr_name;
>>> +	dev->attr.attr.mode = 0444;
>>> +	dev->attr.show = thermal_cooling_device_trip_point_show;
>>> +	result = device_create_file(&tz->device, &dev->attr);
>>> +	if (result)
>>> +		goto remove_symbol_link;
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +	mutex_lock(&cdev->lock);
>>> +	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
>>> +	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> +		result = -EEXIST;
>>> +		break;
>>> +	}
>>> +	if (!result) {
>>> +		list_add_tail(&dev->tz_node, &tz->thermal_instances);
>>> +		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
>>> +	}
>>> +	mutex_unlock(&cdev->lock);
>>> +	mutex_unlock(&tz->lock);
>>> +
>>> +	if (!result)
>>> +		return 0;
>>> +
>>> +	device_remove_file(&tz->device, &dev->attr);
>>> +remove_symbol_link:
>>> +	sysfs_remove_link(&tz->device.kobj, dev->name);
>>> +release_idr:
>>> +	release_idr(&tz->idr, &tz->lock, dev->id);
>>> +free_mem:
>>> +	kfree(dev);
>>> +	return result;
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
>>> +
>>> +/**
>>> + * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
>>> + * @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,
>>> +				       struct thermal_cooling_device *cdev)
>>> +{
>>> +	struct thermal_instance *pos, *next;
>>> +
>>> +	mutex_lock(&tz->lock);
>>> +	mutex_lock(&cdev->lock);
>>> +	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
>>> +		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> +			list_del(&pos->tz_node);
>>> +			list_del(&pos->cdev_node);
>>> +			mutex_unlock(&cdev->lock);
>>> +			mutex_unlock(&tz->lock);
>>> +			goto unbind;
>>> +		}
>>> +	}
>>> +	mutex_unlock(&cdev->lock);
>>> +	mutex_unlock(&tz->lock);
>>> +
>>> +	return -ENODEV;
>>> +
>>> +unbind:
>>> +	device_remove_file(&tz->device, &pos->attr);
>>> +	sysfs_remove_link(&tz->device.kobj, pos->name);
>>> +	release_idr(&tz->idr, &tz->lock, pos->id);
>>> +	kfree(pos);
>>> +	return 0;
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
>>> +
>>> +static void thermal_release(struct device *dev)
>>> +{
>>> +	struct thermal_zone_device *tz;
>>> +	struct thermal_cooling_device *cdev;
>>> +
>>> +	if (!strncmp(dev_name(dev), "thermal_zone",
>>> +		     sizeof("thermal_zone") - 1)) {
>>> +		tz = to_thermal_zone(dev);
>>> +		kfree(tz);
>>> +	} else {
>>> +		cdev = to_cooling_device(dev);
>>> +		kfree(cdev);
>>> +	}
>>> +}
>>> +
>>> +static struct class thermal_class = {
>>> +	.name = "thermal",
>>> +	.dev_release = thermal_release,
>>> +};
>>> +
>>> +/**
>>> + * thermal_cooling_device_register - register a new thermal cooling device
>>> + * @type:	the thermal cooling device type.
>>> + * @devdata:	device private data.
>>> + * @ops:		standard thermal cooling devices callbacks.
>>> + */
>>> +struct thermal_cooling_device *
>>> +thermal_cooling_device_register(char *type, void *devdata,
>>> +				const struct thermal_cooling_device_ops *ops)
>>> +{
>>> +	struct thermal_cooling_device *cdev;
>>> +	int result;
>>> +
>>> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
>>> +	    !ops->set_cur_state)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
>>> +	if (!cdev)
>>> +		return ERR_PTR(-ENOMEM);
>>> +
>>> +	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
>>> +	if (result) {
>>> +		kfree(cdev);
>>> +		return ERR_PTR(result);
>>> +	}
>>> +
>>> +	strcpy(cdev->type, type ? : "");
>>> +	mutex_init(&cdev->lock);
>>> +	INIT_LIST_HEAD(&cdev->thermal_instances);
>>> +	cdev->ops = ops;
>>> +	cdev->updated = true;
>>> +	cdev->device.class = &thermal_class;
>>> +	cdev->devdata = devdata;
>>> +	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
>>> +	result = device_register(&cdev->device);
>>> +	if (result) {
>>> +		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> +		kfree(cdev);
>>> +		return ERR_PTR(result);
>>> +	}
>>> +
>>> +	/* sys I/F */
>>> +	if (type) {
>>> +		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
>>> +		if (result)
>>> +			goto unregister;
>>> +	}
>>> +
>>> +	result = device_create_file(&cdev->device, &dev_attr_max_state);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	result = device_create_file(&cdev->device, &dev_attr_cur_state);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	/* Add 'this' new cdev to the global cdev list */
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_add(&cdev->node, &thermal_cdev_list);
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	/* Update binding information for 'this' new cdev */
>>> +	bind_cdev(cdev);
>>> +
>>> +	return cdev;
>>> +
>>> +unregister:
>>> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> +	device_unregister(&cdev->device);
>>> +	return ERR_PTR(result);
>>> +}
>>> +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
>>> + * longer needed.
>>> + */
>>> +void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
>>> +{
>>> +	int i;
>>> +	const struct thermal_zone_params *tzp;
>>> +	struct thermal_zone_device *tz;
>>> +	struct thermal_cooling_device *pos = NULL;
>>> +
>>> +	if (!cdev)
>>> +		return;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_for_each_entry(pos, &thermal_cdev_list, node)
>>> +	    if (pos == cdev)
>>> +		break;
>>> +	if (pos != cdev) {
>>> +		/* thermal cooling device not found */
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		return;
>>> +	}
>>> +	list_del(&cdev->node);
>>> +
>>> +	/* Unbind all thermal zones associated with 'this' cdev */
>>> +	list_for_each_entry(tz, &thermal_tz_list, node) {
>>> +		if (tz->ops->unbind) {
>>> +			tz->ops->unbind(tz, cdev);
>>> +			continue;
>>> +		}
>>> +
>>> +		if (!tz->tzp || !tz->tzp->tbp)
>>> +			continue;
>>> +
>>> +		tzp = tz->tzp;
>>> +		for (i = 0; i < tzp->num_tbps; i++) {
>>> +			if (tzp->tbp[i].cdev == cdev) {
>>> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
>>> +				tzp->tbp[i].cdev = NULL;
>>> +			}
>>> +		}
>>> +	}
>>> +
>>> +	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_max_state);
>>> +	device_remove_file(&cdev->device, &dev_attr_cur_state);
>>> +
>>> +	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> +	device_unregister(&cdev->device);
>>> +	return;
>>> +}
>>> +EXPORT_SYMBOL(thermal_cooling_device_unregister);
>>> +
>>> +void thermal_cdev_update(struct thermal_cooling_device *cdev)
>>> +{
>>> +	struct thermal_instance *instance;
>>> +	unsigned long target = 0;
>>> +
>>> +	/* cooling device is updated*/
>>> +	if (cdev->updated)
>>> +		return;
>>> +
>>> +	mutex_lock(&cdev->lock);
>>> +	/* Make sure cdev enters the deepest cooling state */
>>> +	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
>>> +		if (instance->target == THERMAL_NO_TARGET)
>>> +			continue;
>>> +		if (instance->target > target)
>>> +			target = instance->target;
>>> +	}
>>> +	mutex_unlock(&cdev->lock);
>>> +	cdev->ops->set_cur_state(cdev, target);
>>> +	cdev->updated = true;
>>> +}
>>> +EXPORT_SYMBOL(thermal_cdev_update);
>>> +
>>> +/**
>>> + * notify_thermal_framework - Sensor drivers use this API to notify framework
>>> + * @tz:		thermal zone device
>>> + * @trip:	indicates which trip point has been crossed
>>> + *
>>> + * This function handles the trip events from sensor drivers. It starts
>>> + * throttling the cooling devices according to the policy configured.
>>> + * For CRITICAL and HOT trip points, this notifies the respective drivers,
>>> + * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
>>> + * The throttling policy is based on the configured platform data; if no
>>> + * platform data is provided, this uses the step_wise throttling policy.
>>> + */
>>> +void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
>>> +{
>>> +	handle_thermal_trip(tz, trip);
>>> +}
>>> +EXPORT_SYMBOL(notify_thermal_framework);
>>> +
>>> +/**
>>> + * create_trip_attrs - create attributes for trip points
>>> + * @tz:		the thermal zone device
>>> + * @mask:	Writeable trip point bitmap.
>>> + */
>>> +static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
>>> +{
>>> +	int indx;
>>> +	int size = sizeof(struct thermal_attr) * tz->trips;
>>> +
>>> +	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
>>> +	if (!tz->trip_type_attrs)
>>> +		return -ENOMEM;
>>> +
>>> +	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
>>> +	if (!tz->trip_temp_attrs) {
>>> +		kfree(tz->trip_type_attrs);
>>> +		return -ENOMEM;
>>> +	}
>>> +
>>> +	if (tz->ops->get_trip_hyst) {
>>> +		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
>>> +		if (!tz->trip_hyst_attrs) {
>>> +			kfree(tz->trip_type_attrs);
>>> +			kfree(tz->trip_temp_attrs);
>>> +			return -ENOMEM;
>>> +		}
>>> +	}
>>> +
>>> +
>>> +	for (indx = 0; indx < tz->trips; indx++) {
>>> +		/* create trip type attribute */
>>> +		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> +			 "trip_point_%d_type", indx);
>>> +
>>> +		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
>>> +		tz->trip_type_attrs[indx].attr.attr.name =
>>> +						tz->trip_type_attrs[indx].name;
>>> +		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
>>> +		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
>>> +
>>> +		device_create_file(&tz->device,
>>> +				   &tz->trip_type_attrs[indx].attr);
>>> +
>>> +		/* create trip temp attribute */
>>> +		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> +			 "trip_point_%d_temp", indx);
>>> +
>>> +		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
>>> +		tz->trip_temp_attrs[indx].attr.attr.name =
>>> +						tz->trip_temp_attrs[indx].name;
>>> +		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
>>> +		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
>>> +		if (mask & (1 << indx)) {
>>> +			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
>>> +			tz->trip_temp_attrs[indx].attr.store =
>>> +							trip_point_temp_store;
>>> +		}
>>> +
>>> +		device_create_file(&tz->device,
>>> +				   &tz->trip_temp_attrs[indx].attr);
>>> +
>>> +		/* create Optional trip hyst attribute */
>>> +		if (!tz->ops->get_trip_hyst)
>>> +			continue;
>>> +		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> +			 "trip_point_%d_hyst", indx);
>>> +
>>> +		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
>>> +		tz->trip_hyst_attrs[indx].attr.attr.name =
>>> +					tz->trip_hyst_attrs[indx].name;
>>> +		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
>>> +		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
>>> +		if (tz->ops->set_trip_hyst) {
>>> +			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
>>> +			tz->trip_hyst_attrs[indx].attr.store =
>>> +					trip_point_hyst_store;
>>> +		}
>>> +
>>> +		device_create_file(&tz->device,
>>> +				   &tz->trip_hyst_attrs[indx].attr);
>>> +	}
>>> +	return 0;
>>> +}
>>> +
>>> +static void remove_trip_attrs(struct thermal_zone_device *tz)
>>> +{
>>> +	int indx;
>>> +
>>> +	for (indx = 0; indx < tz->trips; indx++) {
>>> +		device_remove_file(&tz->device,
>>> +				   &tz->trip_type_attrs[indx].attr);
>>> +		device_remove_file(&tz->device,
>>> +				   &tz->trip_temp_attrs[indx].attr);
>>> +		if (tz->ops->get_trip_hyst)
>>> +			device_remove_file(&tz->device,
>>> +				  &tz->trip_hyst_attrs[indx].attr);
>>> +	}
>>> +	kfree(tz->trip_type_attrs);
>>> +	kfree(tz->trip_temp_attrs);
>>> +	kfree(tz->trip_hyst_attrs);
>>> +}
>>> +
>>> +/**
>>> + * thermal_zone_device_register - register a new thermal zone device
>>> + * @type:	the thermal zone device type
>>> + * @trips:	the number of trip points the thermal zone support
>>> + * @mask:	a bit string indicating the writeablility of trip points
>>> + * @devdata:	private device data
>>> + * @ops:	standard thermal zone device callbacks
>>> + * @tzp:	thermal zone platform parameters
>>> + * @passive_delay: number of milliseconds to wait between polls when
>>> + *		   performing passive cooling
>>> + * @polling_delay: number of milliseconds to wait between polls when checking
>>> + *		   whether trip points have been crossed (0 for interrupt
>>> + *		   driven systems)
>>> + *
>>> + * thermal_zone_device_unregister() must be called when the device is no
>>> + * longer needed. The passive cooling depends on the .get_trend() return value.
>>> + */
>>> +struct thermal_zone_device *thermal_zone_device_register(const char *type,
>>> +	int trips, int mask, void *devdata,
>>> +	const struct thermal_zone_device_ops *ops,
>>> +	const struct thermal_zone_params *tzp,
>>> +	int passive_delay, int polling_delay)
>>> +{
>>> +	struct thermal_zone_device *tz;
>>> +	enum thermal_trip_type trip_type;
>>> +	int result;
>>> +	int count;
>>> +	int passive = 0;
>>> +
>>> +	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	if (!ops || !ops->get_temp)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	if (trips > 0 && !ops->get_trip_type)
>>> +		return ERR_PTR(-EINVAL);
>>> +
>>> +	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
>>> +	if (!tz)
>>> +		return ERR_PTR(-ENOMEM);
>>> +
>>> +	INIT_LIST_HEAD(&tz->thermal_instances);
>>> +	idr_init(&tz->idr);
>>> +	mutex_init(&tz->lock);
>>> +	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
>>> +	if (result) {
>>> +		kfree(tz);
>>> +		return ERR_PTR(result);
>>> +	}
>>> +
>>> +	strcpy(tz->type, type ? : "");
>>> +	tz->ops = ops;
>>> +	tz->tzp = tzp;
>>> +	tz->device.class = &thermal_class;
>>> +	tz->devdata = devdata;
>>> +	tz->trips = trips;
>>> +	tz->passive_delay = passive_delay;
>>> +	tz->polling_delay = polling_delay;
>>> +
>>> +	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
>>> +	result = device_register(&tz->device);
>>> +	if (result) {
>>> +		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> +		kfree(tz);
>>> +		return ERR_PTR(result);
>>> +	}
>>> +
>>> +	/* sys I/F */
>>> +	if (type) {
>>> +		result = device_create_file(&tz->device, &dev_attr_type);
>>> +		if (result)
>>> +			goto unregister;
>>> +	}
>>> +
>>> +	result = device_create_file(&tz->device, &dev_attr_temp);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	if (ops->get_mode) {
>>> +		result = device_create_file(&tz->device, &dev_attr_mode);
>>> +		if (result)
>>> +			goto unregister;
>>> +	}
>>> +
>>> +	result = create_trip_attrs(tz, mask);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	for (count = 0; count < trips; count++) {
>>> +		tz->ops->get_trip_type(tz, count, &trip_type);
>>> +		if (trip_type == THERMAL_TRIP_PASSIVE)
>>> +			passive = 1;
>>> +	}
>>> +
>>> +	if (!passive) {
>>> +		result = device_create_file(&tz->device, &dev_attr_passive);
>>> +		if (result)
>>> +			goto unregister;
>>> +	}
>>> +
>>> +#ifdef CONFIG_THERMAL_EMULATION
>>> +	result = device_create_file(&tz->device, &dev_attr_emul_temp);
>>> +	if (result)
>>> +		goto unregister;
>>> +#endif
>>> +	/* Create policy attribute */
>>> +	result = device_create_file(&tz->device, &dev_attr_policy);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	/* Update 'this' zone's governor information */
>>> +	mutex_lock(&thermal_governor_lock);
>>> +
>>> +	if (tz->tzp)
>>> +		tz->governor = __find_governor(tz->tzp->governor_name);
>>> +	else
>>> +		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
>>> +
>>> +	mutex_unlock(&thermal_governor_lock);
>>> +
>>> +	result = thermal_add_hwmon_sysfs(tz);
>>> +	if (result)
>>> +		goto unregister;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_add_tail(&tz->node, &thermal_tz_list);
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	/* Bind cooling devices for this zone */
>>> +	bind_tz(tz);
>>> +
>>> +	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
>>> +
>>> +	thermal_zone_device_update(tz);
>>> +
>>> +	if (!result)
>>> +		return tz;
>>> +
>>> +unregister:
>>> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> +	device_unregister(&tz->device);
>>> +	return ERR_PTR(result);
>>> +}
>>> +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)
>>> +{
>>> +	int i;
>>> +	const struct thermal_zone_params *tzp;
>>> +	struct thermal_cooling_device *cdev;
>>> +	struct thermal_zone_device *pos = NULL;
>>> +
>>> +	if (!tz)
>>> +		return;
>>> +
>>> +	tzp = tz->tzp;
>>> +
>>> +	mutex_lock(&thermal_list_lock);
>>> +	list_for_each_entry(pos, &thermal_tz_list, node)
>>> +	    if (pos == tz)
>>> +		break;
>>> +	if (pos != tz) {
>>> +		/* thermal zone device not found */
>>> +		mutex_unlock(&thermal_list_lock);
>>> +		return;
>>> +	}
>>> +	list_del(&tz->node);
>>> +
>>> +	/* Unbind all cdevs associated with 'this' thermal zone */
>>> +	list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> +		if (tz->ops->unbind) {
>>> +			tz->ops->unbind(tz, cdev);
>>> +			continue;
>>> +		}
>>> +
>>> +		if (!tzp || !tzp->tbp)
>>> +			break;
>>> +
>>> +		for (i = 0; i < tzp->num_tbps; i++) {
>>> +			if (tzp->tbp[i].cdev == cdev) {
>>> +				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
>>> +				tzp->tbp[i].cdev = NULL;
>>> +			}
>>> +		}
>>> +	}
>>> +
>>> +	mutex_unlock(&thermal_list_lock);
>>> +
>>> +	thermal_zone_device_set_polling(tz, 0);
>>> +
>>> +	if (tz->type[0])
>>> +		device_remove_file(&tz->device, &dev_attr_type);
>>> +	device_remove_file(&tz->device, &dev_attr_temp);
>>> +	if (tz->ops->get_mode)
>>> +		device_remove_file(&tz->device, &dev_attr_mode);
>>> +	device_remove_file(&tz->device, &dev_attr_policy);
>>> +	remove_trip_attrs(tz);
>>> +	tz->governor = NULL;
>>> +
>>> +	thermal_remove_hwmon_sysfs(tz);
>>> +	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> +	idr_destroy(&tz->idr);
>>> +	mutex_destroy(&tz->lock);
>>> +	device_unregister(&tz->device);
>>> +	return;
>>> +}
>>> +EXPORT_SYMBOL(thermal_zone_device_unregister);
>>> +
>>> +#ifdef CONFIG_NET
>>> +static struct genl_family thermal_event_genl_family = {
>>> +	.id = GENL_ID_GENERATE,
>>> +	.name = THERMAL_GENL_FAMILY_NAME,
>>> +	.version = THERMAL_GENL_VERSION,
>>> +	.maxattr = THERMAL_GENL_ATTR_MAX,
>>> +};
>>> +
>>> +static struct genl_multicast_group thermal_event_mcgrp = {
>>> +	.name = THERMAL_GENL_MCAST_GROUP_NAME,
>>> +};
>>> +
>>> +int thermal_generate_netlink_event(struct thermal_zone_device *tz,
>>> +					enum events event)
>>> +{
>>> +	struct sk_buff *skb;
>>> +	struct nlattr *attr;
>>> +	struct thermal_genl_event *thermal_event;
>>> +	void *msg_header;
>>> +	int size;
>>> +	int result;
>>> +	static unsigned int thermal_event_seqnum;
>>> +
>>> +	if (!tz)
>>> +		return -EINVAL;
>>> +
>>> +	/* allocate memory */
>>> +	size = nla_total_size(sizeof(struct thermal_genl_event)) +
>>> +	       nla_total_size(0);
>>> +
>>> +	skb = genlmsg_new(size, GFP_ATOMIC);
>>> +	if (!skb)
>>> +		return -ENOMEM;
>>> +
>>> +	/* add the genetlink message header */
>>> +	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
>>> +				 &thermal_event_genl_family, 0,
>>> +				 THERMAL_GENL_CMD_EVENT);
>>> +	if (!msg_header) {
>>> +		nlmsg_free(skb);
>>> +		return -ENOMEM;
>>> +	}
>>> +
>>> +	/* fill the data */
>>> +	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
>>> +			   sizeof(struct thermal_genl_event));
>>> +
>>> +	if (!attr) {
>>> +		nlmsg_free(skb);
>>> +		return -EINVAL;
>>> +	}
>>> +
>>> +	thermal_event = nla_data(attr);
>>> +	if (!thermal_event) {
>>> +		nlmsg_free(skb);
>>> +		return -EINVAL;
>>> +	}
>>> +
>>> +	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
>>> +
>>> +	thermal_event->orig = tz->id;
>>> +	thermal_event->event = event;
>>> +
>>> +	/* send multicast genetlink message */
>>> +	result = genlmsg_end(skb, msg_header);
>>> +	if (result < 0) {
>>> +		nlmsg_free(skb);
>>> +		return result;
>>> +	}
>>> +
>>> +	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
>>> +	if (result)
>>> +		dev_err(&tz->device, "Failed to send netlink event:%d", result);
>>> +
>>> +	return result;
>>> +}
>>> +EXPORT_SYMBOL(thermal_generate_netlink_event);
>>> +
>>> +static int genetlink_init(void)
>>> +{
>>> +	int result;
>>> +
>>> +	result = genl_register_family(&thermal_event_genl_family);
>>> +	if (result)
>>> +		return result;
>>> +
>>> +	result = genl_register_mc_group(&thermal_event_genl_family,
>>> +					&thermal_event_mcgrp);
>>> +	if (result)
>>> +		genl_unregister_family(&thermal_event_genl_family);
>>> +	return result;
>>> +}
>>> +
>>> +static void genetlink_exit(void)
>>> +{
>>> +	genl_unregister_family(&thermal_event_genl_family);
>>> +}
>>> +#else /* !CONFIG_NET */
>>> +static inline int genetlink_init(void) { return 0; }
>>> +static inline void genetlink_exit(void) {}
>>> +#endif /* !CONFIG_NET */
>>> +
>>> +static int __init thermal_init(void)
>>> +{
>>> +	int result = 0;
>>> +
>>> +	result = class_register(&thermal_class);
>>> +	if (result) {
>>> +		idr_destroy(&thermal_tz_idr);
>>> +		idr_destroy(&thermal_cdev_idr);
>>> +		mutex_destroy(&thermal_idr_lock);
>>> +		mutex_destroy(&thermal_list_lock);
>>> +		return result;
>>> +	}
>>> +	result = genetlink_init();
>>> +	return result;
>>> +}
>>> +
>>> +static void __exit thermal_exit(void)
>>> +{
>>> +	class_unregister(&thermal_class);
>>> +	idr_destroy(&thermal_tz_idr);
>>> +	idr_destroy(&thermal_cdev_idr);
>>> +	mutex_destroy(&thermal_idr_lock);
>>> +	mutex_destroy(&thermal_list_lock);
>>> +	genetlink_exit();
>>> +}
>>> +
>>> +fs_initcall(thermal_init);
>>> +module_exit(thermal_exit);
>>> diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
>>> deleted file mode 100644
>>> index 5b7863a..0000000
>>> --- a/drivers/thermal/thermal_sys.c
>>> +++ /dev/null
>>> @@ -1,1888 +0,0 @@
>>> -/*
>>> - *  thermal.c - Generic Thermal Management Sysfs support.
>>> - *
>>> - *  Copyright (C) 2008 Intel Corp
>>> - *  Copyright (C) 2008 Zhang Rui <rui.zhang@...el.com>
>>> - *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@...el.com>
>>> - *
>>> - *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> - *
>>> - *  This program is free software; you can redistribute it and/or modify
>>> - *  it under the terms of the GNU General Public License as published by
>>> - *  the Free Software Foundation; version 2 of the License.
>>> - *
>>> - *  This program is distributed in the hope that it will be useful, but
>>> - *  WITHOUT ANY WARRANTY; without even the implied warranty of
>>> - *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
>>> - *  General Public License for more details.
>>> - *
>>> - *  You should have received a copy of the GNU General Public License along
>>> - *  with this program; if not, write to the Free Software Foundation, Inc.,
>>> - *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
>>> - *
>>> - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> - */
>>> -
>>> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>>> -
>>> -#include <linux/module.h>
>>> -#include <linux/device.h>
>>> -#include <linux/err.h>
>>> -#include <linux/slab.h>
>>> -#include <linux/kdev_t.h>
>>> -#include <linux/idr.h>
>>> -#include <linux/thermal.h>
>>> -#include <linux/reboot.h>
>>> -#include <net/netlink.h>
>>> -#include <net/genetlink.h>
>>> -
>>> -#include "thermal_core.h"
>>> -
>>> -MODULE_AUTHOR("Zhang Rui");
>>> -MODULE_DESCRIPTION("Generic thermal management sysfs support");
>>> -MODULE_LICENSE("GPL");
>>> -
>>> -static DEFINE_IDR(thermal_tz_idr);
>>> -static DEFINE_IDR(thermal_cdev_idr);
>>> -static DEFINE_MUTEX(thermal_idr_lock);
>>> -
>>> -static LIST_HEAD(thermal_tz_list);
>>> -static LIST_HEAD(thermal_cdev_list);
>>> -static LIST_HEAD(thermal_governor_list);
>>> -
>>> -static DEFINE_MUTEX(thermal_list_lock);
>>> -static DEFINE_MUTEX(thermal_governor_lock);
>>> -
>>> -static struct thermal_governor *__find_governor(const char *name)
>>> -{
>>> -	struct thermal_governor *pos;
>>> -
>>> -	list_for_each_entry(pos, &thermal_governor_list, governor_list)
>>> -		if (!strnicmp(name, pos->name, THERMAL_NAME_LENGTH))
>>> -			return pos;
>>> -
>>> -	return NULL;
>>> -}
>>> -
>>> -int thermal_register_governor(struct thermal_governor *governor)
>>> -{
>>> -	int err;
>>> -	const char *name;
>>> -	struct thermal_zone_device *pos;
>>> -
>>> -	if (!governor)
>>> -		return -EINVAL;
>>> -
>>> -	mutex_lock(&thermal_governor_lock);
>>> -
>>> -	err = -EBUSY;
>>> -	if (__find_governor(governor->name) == NULL) {
>>> -		err = 0;
>>> -		list_add(&governor->governor_list, &thermal_governor_list);
>>> -	}
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -
>>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> -		if (pos->governor)
>>> -			continue;
>>> -		if (pos->tzp)
>>> -			name = pos->tzp->governor_name;
>>> -		else
>>> -			name = DEFAULT_THERMAL_GOVERNOR;
>>> -		if (!strnicmp(name, governor->name, THERMAL_NAME_LENGTH))
>>> -			pos->governor = governor;
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -	mutex_unlock(&thermal_governor_lock);
>>> -
>>> -	return err;
>>> -}
>>> -EXPORT_SYMBOL_GPL(thermal_register_governor);
>>> -
>>> -void thermal_unregister_governor(struct thermal_governor *governor)
>>> -{
>>> -	struct thermal_zone_device *pos;
>>> -
>>> -	if (!governor)
>>> -		return;
>>> -
>>> -	mutex_lock(&thermal_governor_lock);
>>> -
>>> -	if (__find_governor(governor->name) == NULL)
>>> -		goto exit;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -
>>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> -		if (!strnicmp(pos->governor->name, governor->name,
>>> -						THERMAL_NAME_LENGTH))
>>> -			pos->governor = NULL;
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -	list_del(&governor->governor_list);
>>> -exit:
>>> -	mutex_unlock(&thermal_governor_lock);
>>> -	return;
>>> -}
>>> -EXPORT_SYMBOL_GPL(thermal_unregister_governor);
>>> -
>>> -static int get_idr(struct idr *idr, struct mutex *lock, int *id)
>>> -{
>>> -	int ret;
>>> -
>>> -	if (lock)
>>> -		mutex_lock(lock);
>>> -	ret = idr_alloc(idr, NULL, 0, 0, GFP_KERNEL);
>>> -	if (lock)
>>> -		mutex_unlock(lock);
>>> -	if (unlikely(ret < 0))
>>> -		return ret;
>>> -	*id = ret;
>>> -	return 0;
>>> -}
>>> -
>>> -static void release_idr(struct idr *idr, struct mutex *lock, int id)
>>> -{
>>> -	if (lock)
>>> -		mutex_lock(lock);
>>> -	idr_remove(idr, id);
>>> -	if (lock)
>>> -		mutex_unlock(lock);
>>> -}
>>> -
>>> -int get_tz_trend(struct thermal_zone_device *tz, int trip)
>>> -{
>>> -	enum thermal_trend trend;
>>> -
>>> -	if (!tz->ops->get_trend || tz->ops->get_trend(tz, trip, &trend)) {
>>> -		if (tz->temperature > tz->last_temperature)
>>> -			trend = THERMAL_TREND_RAISING;
>>> -		else if (tz->temperature < tz->last_temperature)
>>> -			trend = THERMAL_TREND_DROPPING;
>>> -		else
>>> -			trend = THERMAL_TREND_STABLE;
>>> -	}
>>> -
>>> -	return trend;
>>> -}
>>> -EXPORT_SYMBOL(get_tz_trend);
>>> -
>>> -struct thermal_instance *get_thermal_instance(struct thermal_zone_device *tz,
>>> -			struct thermal_cooling_device *cdev, int trip)
>>> -{
>>> -	struct thermal_instance *pos = NULL;
>>> -	struct thermal_instance *target_instance = NULL;
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -	mutex_lock(&cdev->lock);
>>> -
>>> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node) {
>>> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> -			target_instance = pos;
>>> -			break;
>>> -		}
>>> -	}
>>> -
>>> -	mutex_unlock(&cdev->lock);
>>> -	mutex_unlock(&tz->lock);
>>> -
>>> -	return target_instance;
>>> -}
>>> -EXPORT_SYMBOL(get_thermal_instance);
>>> -
>>> -static void print_bind_err_msg(struct thermal_zone_device *tz,
>>> -			struct thermal_cooling_device *cdev, int ret)
>>> -{
>>> -	dev_err(&tz->device, "binding zone %s with cdev %s failed:%d\n",
>>> -				tz->type, cdev->type, ret);
>>> -}
>>> -
>>> -static void __bind(struct thermal_zone_device *tz, int mask,
>>> -			struct thermal_cooling_device *cdev)
>>> -{
>>> -	int i, ret;
>>> -
>>> -	for (i = 0; i < tz->trips; i++) {
>>> -		if (mask & (1 << i)) {
>>> -			ret = thermal_zone_bind_cooling_device(tz, i, cdev,
>>> -					THERMAL_NO_LIMIT, THERMAL_NO_LIMIT);
>>> -			if (ret)
>>> -				print_bind_err_msg(tz, cdev, ret);
>>> -		}
>>> -	}
>>> -}
>>> -
>>> -static void __unbind(struct thermal_zone_device *tz, int mask,
>>> -			struct thermal_cooling_device *cdev)
>>> -{
>>> -	int i;
>>> -
>>> -	for (i = 0; i < tz->trips; i++)
>>> -		if (mask & (1 << i))
>>> -			thermal_zone_unbind_cooling_device(tz, i, cdev);
>>> -}
>>> -
>>> -static void bind_cdev(struct thermal_cooling_device *cdev)
>>> -{
>>> -	int i, ret;
>>> -	const struct thermal_zone_params *tzp;
>>> -	struct thermal_zone_device *pos = NULL;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -
>>> -	list_for_each_entry(pos, &thermal_tz_list, node) {
>>> -		if (!pos->tzp && !pos->ops->bind)
>>> -			continue;
>>> -
>>> -		if (!pos->tzp && pos->ops->bind) {
>>> -			ret = pos->ops->bind(pos, cdev);
>>> -			if (ret)
>>> -				print_bind_err_msg(pos, cdev, ret);
>>> -		}
>>> -
>>> -		tzp = pos->tzp;
>>> -		if (!tzp || !tzp->tbp)
>>> -			continue;
>>> -
>>> -		for (i = 0; i < tzp->num_tbps; i++) {
>>> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
>>> -				continue;
>>> -			if (tzp->tbp[i].match(pos, cdev))
>>> -				continue;
>>> -			tzp->tbp[i].cdev = cdev;
>>> -			__bind(pos, tzp->tbp[i].trip_mask, cdev);
>>> -		}
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -}
>>> -
>>> -static void bind_tz(struct thermal_zone_device *tz)
>>> -{
>>> -	int i, ret;
>>> -	struct thermal_cooling_device *pos = NULL;
>>> -	const struct thermal_zone_params *tzp = tz->tzp;
>>> -
>>> -	if (!tzp && !tz->ops->bind)
>>> -		return;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -
>>> -	/* If there is no platform data, try to use ops->bind */
>>> -	if (!tzp && tz->ops->bind) {
>>> -		list_for_each_entry(pos, &thermal_cdev_list, node) {
>>> -			ret = tz->ops->bind(tz, pos);
>>> -			if (ret)
>>> -				print_bind_err_msg(tz, pos, ret);
>>> -		}
>>> -		goto exit;
>>> -	}
>>> -
>>> -	if (!tzp || !tzp->tbp)
>>> -		goto exit;
>>> -
>>> -	list_for_each_entry(pos, &thermal_cdev_list, node) {
>>> -		for (i = 0; i < tzp->num_tbps; i++) {
>>> -			if (tzp->tbp[i].cdev || !tzp->tbp[i].match)
>>> -				continue;
>>> -			if (tzp->tbp[i].match(tz, pos))
>>> -				continue;
>>> -			tzp->tbp[i].cdev = pos;
>>> -			__bind(tz, tzp->tbp[i].trip_mask, pos);
>>> -		}
>>> -	}
>>> -exit:
>>> -	mutex_unlock(&thermal_list_lock);
>>> -}
>>> -
>>> -static void thermal_zone_device_set_polling(struct thermal_zone_device *tz,
>>> -					    int delay)
>>> -{
>>> -	if (delay > 1000)
>>> -		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
>>> -				 round_jiffies(msecs_to_jiffies(delay)));
>>> -	else if (delay)
>>> -		mod_delayed_work(system_freezable_wq, &tz->poll_queue,
>>> -				 msecs_to_jiffies(delay));
>>> -	else
>>> -		cancel_delayed_work(&tz->poll_queue);
>>> -}
>>> -
>>> -static void monitor_thermal_zone(struct thermal_zone_device *tz)
>>> -{
>>> -	mutex_lock(&tz->lock);
>>> -
>>> -	if (tz->passive)
>>> -		thermal_zone_device_set_polling(tz, tz->passive_delay);
>>> -	else if (tz->polling_delay)
>>> -		thermal_zone_device_set_polling(tz, tz->polling_delay);
>>> -	else
>>> -		thermal_zone_device_set_polling(tz, 0);
>>> -
>>> -	mutex_unlock(&tz->lock);
>>> -}
>>> -
>>> -static void handle_non_critical_trips(struct thermal_zone_device *tz,
>>> -			int trip, enum thermal_trip_type trip_type)
>>> -{
>>> -	if (tz->governor)
>>> -		tz->governor->throttle(tz, trip);
>>> -}
>>> -
>>> -static void handle_critical_trips(struct thermal_zone_device *tz,
>>> -				int trip, enum thermal_trip_type trip_type)
>>> -{
>>> -	long trip_temp;
>>> -
>>> -	tz->ops->get_trip_temp(tz, trip, &trip_temp);
>>> -
>>> -	/* If we have not crossed the trip_temp, we do not care. */
>>> -	if (tz->temperature < trip_temp)
>>> -		return;
>>> -
>>> -	if (tz->ops->notify)
>>> -		tz->ops->notify(tz, trip, trip_type);
>>> -
>>> -	if (trip_type == THERMAL_TRIP_CRITICAL) {
>>> -		dev_emerg(&tz->device,
>>> -			  "critical temperature reached(%d C),shutting down\n",
>>> -			  tz->temperature / 1000);
>>> -		orderly_poweroff(true);
>>> -	}
>>> -}
>>> -
>>> -static void handle_thermal_trip(struct thermal_zone_device *tz, int trip)
>>> -{
>>> -	enum thermal_trip_type type;
>>> -
>>> -	tz->ops->get_trip_type(tz, trip, &type);
>>> -
>>> -	if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT)
>>> -		handle_critical_trips(tz, trip, type);
>>> -	else
>>> -		handle_non_critical_trips(tz, trip, type);
>>> -	/*
>>> -	 * Alright, we handled this trip successfully.
>>> -	 * So, start monitoring again.
>>> -	 */
>>> -	monitor_thermal_zone(tz);
>>> -}
>>> -
>>> -static int thermal_zone_get_temp(struct thermal_zone_device *tz,
>>> -				unsigned long *temp)
>>> -{
>>> -	int ret = 0;
>>> -#ifdef CONFIG_THERMAL_EMULATION
>>> -	int count;
>>> -	unsigned long crit_temp = -1UL;
>>> -	enum thermal_trip_type type;
>>> -#endif
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -
>>> -	ret = tz->ops->get_temp(tz, temp);
>>> -#ifdef CONFIG_THERMAL_EMULATION
>>> -	if (!tz->emul_temperature)
>>> -		goto skip_emul;
>>> -
>>> -	for (count = 0; count < tz->trips; count++) {
>>> -		ret = tz->ops->get_trip_type(tz, count, &type);
>>> -		if (!ret && type == THERMAL_TRIP_CRITICAL) {
>>> -			ret = tz->ops->get_trip_temp(tz, count, &crit_temp);
>>> -			break;
>>> -		}
>>> -	}
>>> -
>>> -	if (ret)
>>> -		goto skip_emul;
>>> -
>>> -	if (*temp < crit_temp)
>>> -		*temp = tz->emul_temperature;
>>> -skip_emul:
>>> -#endif
>>> -	mutex_unlock(&tz->lock);
>>> -	return ret;
>>> -}
>>> -
>>> -static void update_temperature(struct thermal_zone_device *tz)
>>> -{
>>> -	long temp;
>>> -	int ret;
>>> -
>>> -	ret = thermal_zone_get_temp(tz, &temp);
>>> -	if (ret) {
>>> -		dev_warn(&tz->device, "failed to read out thermal zone %d\n",
>>> -			 tz->id);
>>> -		return;
>>> -	}
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -	tz->last_temperature = tz->temperature;
>>> -	tz->temperature = temp;
>>> -	mutex_unlock(&tz->lock);
>>> -}
>>> -
>>> -void thermal_zone_device_update(struct thermal_zone_device *tz)
>>> -{
>>> -	int count;
>>> -
>>> -	update_temperature(tz);
>>> -
>>> -	for (count = 0; count < tz->trips; count++)
>>> -		handle_thermal_trip(tz, count);
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_device_update);
>>> -
>>> -static void thermal_zone_device_check(struct work_struct *work)
>>> -{
>>> -	struct thermal_zone_device *tz = container_of(work, struct
>>> -						      thermal_zone_device,
>>> -						      poll_queue.work);
>>> -	thermal_zone_device_update(tz);
>>> -}
>>> -
>>> -/* sys I/F for thermal zone */
>>> -
>>> -#define to_thermal_zone(_dev) \
>>> -	container_of(_dev, struct thermal_zone_device, device)
>>> -
>>> -static ssize_t
>>> -type_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -
>>> -	return sprintf(buf, "%s\n", tz->type);
>>> -}
>>> -
>>> -static ssize_t
>>> -temp_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	long temperature;
>>> -	int ret;
>>> -
>>> -	ret = thermal_zone_get_temp(tz, &temperature);
>>> -
>>> -	if (ret)
>>> -		return ret;
>>> -
>>> -	return sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -static ssize_t
>>> -mode_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	enum thermal_device_mode mode;
>>> -	int result;
>>> -
>>> -	if (!tz->ops->get_mode)
>>> -		return -EPERM;
>>> -
>>> -	result = tz->ops->get_mode(tz, &mode);
>>> -	if (result)
>>> -		return result;
>>> -
>>> -	return sprintf(buf, "%s\n", mode == THERMAL_DEVICE_ENABLED ? "enabled"
>>> -		       : "disabled");
>>> -}
>>> -
>>> -static ssize_t
>>> -mode_store(struct device *dev, struct device_attribute *attr,
>>> -	   const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int result;
>>> -
>>> -	if (!tz->ops->set_mode)
>>> -		return -EPERM;
>>> -
>>> -	if (!strncmp(buf, "enabled", sizeof("enabled") - 1))
>>> -		result = tz->ops->set_mode(tz, THERMAL_DEVICE_ENABLED);
>>> -	else if (!strncmp(buf, "disabled", sizeof("disabled") - 1))
>>> -		result = tz->ops->set_mode(tz, THERMAL_DEVICE_DISABLED);
>>> -	else
>>> -		result = -EINVAL;
>>> -
>>> -	if (result)
>>> -		return result;
>>> -
>>> -	return count;
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_type_show(struct device *dev, struct device_attribute *attr,
>>> -		     char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	enum thermal_trip_type type;
>>> -	int trip, result;
>>> -
>>> -	if (!tz->ops->get_trip_type)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_type", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	result = tz->ops->get_trip_type(tz, trip, &type);
>>> -	if (result)
>>> -		return result;
>>> -
>>> -	switch (type) {
>>> -	case THERMAL_TRIP_CRITICAL:
>>> -		return sprintf(buf, "critical\n");
>>> -	case THERMAL_TRIP_HOT:
>>> -		return sprintf(buf, "hot\n");
>>> -	case THERMAL_TRIP_PASSIVE:
>>> -		return sprintf(buf, "passive\n");
>>> -	case THERMAL_TRIP_ACTIVE:
>>> -		return sprintf(buf, "active\n");
>>> -	default:
>>> -		return sprintf(buf, "unknown\n");
>>> -	}
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_temp_store(struct device *dev, struct device_attribute *attr,
>>> -		     const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int trip, ret;
>>> -	unsigned long temperature;
>>> -
>>> -	if (!tz->ops->set_trip_temp)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	if (kstrtoul(buf, 10, &temperature))
>>> -		return -EINVAL;
>>> -
>>> -	ret = tz->ops->set_trip_temp(tz, trip, temperature);
>>> -
>>> -	return ret ? ret : count;
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_temp_show(struct device *dev, struct device_attribute *attr,
>>> -		     char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int trip, ret;
>>> -	long temperature;
>>> -
>>> -	if (!tz->ops->get_trip_temp)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_temp", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	ret = tz->ops->get_trip_temp(tz, trip, &temperature);
>>> -
>>> -	if (ret)
>>> -		return ret;
>>> -
>>> -	return sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_hyst_store(struct device *dev, struct device_attribute *attr,
>>> -			const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int trip, ret;
>>> -	unsigned long temperature;
>>> -
>>> -	if (!tz->ops->set_trip_hyst)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	if (kstrtoul(buf, 10, &temperature))
>>> -		return -EINVAL;
>>> -
>>> -	/*
>>> -	 * We are not doing any check on the 'temperature' value
>>> -	 * here. The driver implementing 'set_trip_hyst' has to
>>> -	 * take care of this.
>>> -	 */
>>> -	ret = tz->ops->set_trip_hyst(tz, trip, temperature);
>>> -
>>> -	return ret ? ret : count;
>>> -}
>>> -
>>> -static ssize_t
>>> -trip_point_hyst_show(struct device *dev, struct device_attribute *attr,
>>> -			char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int trip, ret;
>>> -	unsigned long temperature;
>>> -
>>> -	if (!tz->ops->get_trip_hyst)
>>> -		return -EPERM;
>>> -
>>> -	if (!sscanf(attr->attr.name, "trip_point_%d_hyst", &trip))
>>> -		return -EINVAL;
>>> -
>>> -	ret = tz->ops->get_trip_hyst(tz, trip, &temperature);
>>> -
>>> -	return ret ? ret : sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -static ssize_t
>>> -passive_store(struct device *dev, struct device_attribute *attr,
>>> -		    const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	struct thermal_cooling_device *cdev = NULL;
>>> -	int state;
>>> -
>>> -	if (!sscanf(buf, "%d\n", &state))
>>> -		return -EINVAL;
>>> -
>>> -	/* sanity check: values below 1000 millicelcius don't make sense
>>> -	 * and can cause the system to go into a thermal heart attack
>>> -	 */
>>> -	if (state && state < 1000)
>>> -		return -EINVAL;
>>> -
>>> -	if (state && !tz->forced_passive) {
>>> -		mutex_lock(&thermal_list_lock);
>>> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> -			if (!strncmp("Processor", cdev->type,
>>> -				     sizeof("Processor")))
>>> -				thermal_zone_bind_cooling_device(tz,
>>> -						THERMAL_TRIPS_NONE, cdev,
>>> -						THERMAL_NO_LIMIT,
>>> -						THERMAL_NO_LIMIT);
>>> -		}
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		if (!tz->passive_delay)
>>> -			tz->passive_delay = 1000;
>>> -	} else if (!state && tz->forced_passive) {
>>> -		mutex_lock(&thermal_list_lock);
>>> -		list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> -			if (!strncmp("Processor", cdev->type,
>>> -				     sizeof("Processor")))
>>> -				thermal_zone_unbind_cooling_device(tz,
>>> -								   THERMAL_TRIPS_NONE,
>>> -								   cdev);
>>> -		}
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		tz->passive_delay = 0;
>>> -	}
>>> -
>>> -	tz->forced_passive = state;
>>> -
>>> -	thermal_zone_device_update(tz);
>>> -
>>> -	return count;
>>> -}
>>> -
>>> -static ssize_t
>>> -passive_show(struct device *dev, struct device_attribute *attr,
>>> -		   char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -
>>> -	return sprintf(buf, "%d\n", tz->forced_passive);
>>> -}
>>> -
>>> -static ssize_t
>>> -policy_store(struct device *dev, struct device_attribute *attr,
>>> -		    const char *buf, size_t count)
>>> -{
>>> -	int ret = -EINVAL;
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	struct thermal_governor *gov;
>>> -
>>> -	mutex_lock(&thermal_governor_lock);
>>> -
>>> -	gov = __find_governor(buf);
>>> -	if (!gov)
>>> -		goto exit;
>>> -
>>> -	tz->governor = gov;
>>> -	ret = count;
>>> -
>>> -exit:
>>> -	mutex_unlock(&thermal_governor_lock);
>>> -	return ret;
>>> -}
>>> -
>>> -static ssize_t
>>> -policy_show(struct device *dev, struct device_attribute *devattr, char *buf)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -
>>> -	return sprintf(buf, "%s\n", tz->governor->name);
>>> -}
>>> -
>>> -#ifdef CONFIG_THERMAL_EMULATION
>>> -static ssize_t
>>> -emul_temp_store(struct device *dev, struct device_attribute *attr,
>>> -		     const char *buf, size_t count)
>>> -{
>>> -	struct thermal_zone_device *tz = to_thermal_zone(dev);
>>> -	int ret = 0;
>>> -	unsigned long temperature;
>>> -
>>> -	if (kstrtoul(buf, 10, &temperature))
>>> -		return -EINVAL;
>>> -
>>> -	if (!tz->ops->set_emul_temp) {
>>> -		mutex_lock(&tz->lock);
>>> -		tz->emul_temperature = temperature;
>>> -		mutex_unlock(&tz->lock);
>>> -	} else {
>>> -		ret = tz->ops->set_emul_temp(tz, temperature);
>>> -	}
>>> -
>>> -	return ret ? ret : count;
>>> -}
>>> -static DEVICE_ATTR(emul_temp, S_IWUSR, NULL, emul_temp_store);
>>> -#endif/*CONFIG_THERMAL_EMULATION*/
>>> -
>>> -static DEVICE_ATTR(type, 0444, type_show, NULL);
>>> -static DEVICE_ATTR(temp, 0444, temp_show, NULL);
>>> -static DEVICE_ATTR(mode, 0644, mode_show, mode_store);
>>> -static DEVICE_ATTR(passive, S_IRUGO | S_IWUSR, passive_show, passive_store);
>>> -static DEVICE_ATTR(policy, S_IRUGO | S_IWUSR, policy_show, policy_store);
>>> -
>>> -/* sys I/F for cooling device */
>>> -#define to_cooling_device(_dev)	\
>>> -	container_of(_dev, struct thermal_cooling_device, device)
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_type_show(struct device *dev,
>>> -				 struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> -
>>> -	return sprintf(buf, "%s\n", cdev->type);
>>> -}
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_max_state_show(struct device *dev,
>>> -				      struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> -	unsigned long state;
>>> -	int ret;
>>> -
>>> -	ret = cdev->ops->get_max_state(cdev, &state);
>>> -	if (ret)
>>> -		return ret;
>>> -	return sprintf(buf, "%ld\n", state);
>>> -}
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_cur_state_show(struct device *dev,
>>> -				      struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> -	unsigned long state;
>>> -	int ret;
>>> -
>>> -	ret = cdev->ops->get_cur_state(cdev, &state);
>>> -	if (ret)
>>> -		return ret;
>>> -	return sprintf(buf, "%ld\n", state);
>>> -}
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_cur_state_store(struct device *dev,
>>> -				       struct device_attribute *attr,
>>> -				       const char *buf, size_t count)
>>> -{
>>> -	struct thermal_cooling_device *cdev = to_cooling_device(dev);
>>> -	unsigned long state;
>>> -	int result;
>>> -
>>> -	if (!sscanf(buf, "%ld\n", &state))
>>> -		return -EINVAL;
>>> -
>>> -	if ((long)state < 0)
>>> -		return -EINVAL;
>>> -
>>> -	result = cdev->ops->set_cur_state(cdev, state);
>>> -	if (result)
>>> -		return result;
>>> -	return count;
>>> -}
>>> -
>>> -static struct device_attribute dev_attr_cdev_type =
>>> -__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,
>>> -		   thermal_cooling_device_cur_state_show,
>>> -		   thermal_cooling_device_cur_state_store);
>>> -
>>> -static ssize_t
>>> -thermal_cooling_device_trip_point_show(struct device *dev,
>>> -				       struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_instance *instance;
>>> -
>>> -	instance =
>>> -	    container_of(attr, struct thermal_instance, attr);
>>> -
>>> -	if (instance->trip == THERMAL_TRIPS_NONE)
>>> -		return sprintf(buf, "-1\n");
>>> -	else
>>> -		return sprintf(buf, "%d\n", instance->trip);
>>> -}
>>> -
>>> -/* Device management */
>>> -
>>> -#if defined(CONFIG_THERMAL_HWMON)
>>> -
>>> -/* hwmon sys I/F */
>>> -#include <linux/hwmon.h>
>>> -
>>> -/* thermal zone devices with the same type share one hwmon device */
>>> -struct thermal_hwmon_device {
>>> -	char type[THERMAL_NAME_LENGTH];
>>> -	struct device *device;
>>> -	int count;
>>> -	struct list_head tz_list;
>>> -	struct list_head node;
>>> -};
>>> -
>>> -struct thermal_hwmon_attr {
>>> -	struct device_attribute attr;
>>> -	char name[16];
>>> -};
>>> -
>>> -/* one temperature input for each thermal zone */
>>> -struct thermal_hwmon_temp {
>>> -	struct list_head hwmon_node;
>>> -	struct thermal_zone_device *tz;
>>> -	struct thermal_hwmon_attr temp_input;	/* hwmon sys attr */
>>> -	struct thermal_hwmon_attr temp_crit;	/* hwmon sys attr */
>>> -};
>>> -
>>> -static LIST_HEAD(thermal_hwmon_list);
>>> -
>>> -static ssize_t
>>> -name_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	struct thermal_hwmon_device *hwmon = dev_get_drvdata(dev);
>>> -	return sprintf(buf, "%s\n", hwmon->type);
>>> -}
>>> -static DEVICE_ATTR(name, 0444, name_show, NULL);
>>> -
>>> -static ssize_t
>>> -temp_input_show(struct device *dev, struct device_attribute *attr, char *buf)
>>> -{
>>> -	long temperature;
>>> -	int ret;
>>> -	struct thermal_hwmon_attr *hwmon_attr
>>> -			= container_of(attr, struct thermal_hwmon_attr, attr);
>>> -	struct thermal_hwmon_temp *temp
>>> -			= container_of(hwmon_attr, struct thermal_hwmon_temp,
>>> -				       temp_input);
>>> -	struct thermal_zone_device *tz = temp->tz;
>>> -
>>> -	ret = thermal_zone_get_temp(tz, &temperature);
>>> -
>>> -	if (ret)
>>> -		return ret;
>>> -
>>> -	return sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -static ssize_t
>>> -temp_crit_show(struct device *dev, struct device_attribute *attr,
>>> -		char *buf)
>>> -{
>>> -	struct thermal_hwmon_attr *hwmon_attr
>>> -			= container_of(attr, struct thermal_hwmon_attr, attr);
>>> -	struct thermal_hwmon_temp *temp
>>> -			= container_of(hwmon_attr, struct thermal_hwmon_temp,
>>> -				       temp_crit);
>>> -	struct thermal_zone_device *tz = temp->tz;
>>> -	long temperature;
>>> -	int ret;
>>> -
>>> -	ret = tz->ops->get_trip_temp(tz, 0, &temperature);
>>> -	if (ret)
>>> -		return ret;
>>> -
>>> -	return sprintf(buf, "%ld\n", temperature);
>>> -}
>>> -
>>> -
>>> -static struct thermal_hwmon_device *
>>> -thermal_hwmon_lookup_by_type(const struct thermal_zone_device *tz)
>>> -{
>>> -	struct thermal_hwmon_device *hwmon;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_for_each_entry(hwmon, &thermal_hwmon_list, node)
>>> -		if (!strcmp(hwmon->type, tz->type)) {
>>> -			mutex_unlock(&thermal_list_lock);
>>> -			return hwmon;
>>> -		}
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	return NULL;
>>> -}
>>> -
>>> -/* Find the temperature input matching a given thermal zone */
>>> -static struct thermal_hwmon_temp *
>>> -thermal_hwmon_lookup_temp(const struct thermal_hwmon_device *hwmon,
>>> -			  const struct thermal_zone_device *tz)
>>> -{
>>> -	struct thermal_hwmon_temp *temp;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_for_each_entry(temp, &hwmon->tz_list, hwmon_node)
>>> -		if (temp->tz == tz) {
>>> -			mutex_unlock(&thermal_list_lock);
>>> -			return temp;
>>> -		}
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	return NULL;
>>> -}
>>> -
>>> -static int
>>> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
>>> -{
>>> -	struct thermal_hwmon_device *hwmon;
>>> -	struct thermal_hwmon_temp *temp;
>>> -	int new_hwmon_device = 1;
>>> -	int result;
>>> -
>>> -	hwmon = thermal_hwmon_lookup_by_type(tz);
>>> -	if (hwmon) {
>>> -		new_hwmon_device = 0;
>>> -		goto register_sys_interface;
>>> -	}
>>> -
>>> -	hwmon = kzalloc(sizeof(struct thermal_hwmon_device), GFP_KERNEL);
>>> -	if (!hwmon)
>>> -		return -ENOMEM;
>>> -
>>> -	INIT_LIST_HEAD(&hwmon->tz_list);
>>> -	strlcpy(hwmon->type, tz->type, THERMAL_NAME_LENGTH);
>>> -	hwmon->device = hwmon_device_register(NULL);
>>> -	if (IS_ERR(hwmon->device)) {
>>> -		result = PTR_ERR(hwmon->device);
>>> -		goto free_mem;
>>> -	}
>>> -	dev_set_drvdata(hwmon->device, hwmon);
>>> -	result = device_create_file(hwmon->device, &dev_attr_name);
>>> -	if (result)
>>> -		goto free_mem;
>>> -
>>> - register_sys_interface:
>>> -	temp = kzalloc(sizeof(struct thermal_hwmon_temp), GFP_KERNEL);
>>> -	if (!temp) {
>>> -		result = -ENOMEM;
>>> -		goto unregister_name;
>>> -	}
>>> -
>>> -	temp->tz = tz;
>>> -	hwmon->count++;
>>> -
>>> -	snprintf(temp->temp_input.name, sizeof(temp->temp_input.name),
>>> -		 "temp%d_input", hwmon->count);
>>> -	temp->temp_input.attr.attr.name = temp->temp_input.name;
>>> -	temp->temp_input.attr.attr.mode = 0444;
>>> -	temp->temp_input.attr.show = temp_input_show;
>>> -	sysfs_attr_init(&temp->temp_input.attr.attr);
>>> -	result = device_create_file(hwmon->device, &temp->temp_input.attr);
>>> -	if (result)
>>> -		goto free_temp_mem;
>>> -
>>> -	if (tz->ops->get_crit_temp) {
>>> -		unsigned long temperature;
>>> -		if (!tz->ops->get_crit_temp(tz, &temperature)) {
>>> -			snprintf(temp->temp_crit.name,
>>> -				 sizeof(temp->temp_crit.name),
>>> -				"temp%d_crit", hwmon->count);
>>> -			temp->temp_crit.attr.attr.name = temp->temp_crit.name;
>>> -			temp->temp_crit.attr.attr.mode = 0444;
>>> -			temp->temp_crit.attr.show = temp_crit_show;
>>> -			sysfs_attr_init(&temp->temp_crit.attr.attr);
>>> -			result = device_create_file(hwmon->device,
>>> -						    &temp->temp_crit.attr);
>>> -			if (result)
>>> -				goto unregister_input;
>>> -		}
>>> -	}
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	if (new_hwmon_device)
>>> -		list_add_tail(&hwmon->node, &thermal_hwmon_list);
>>> -	list_add_tail(&temp->hwmon_node, &hwmon->tz_list);
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	return 0;
>>> -
>>> - unregister_input:
>>> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
>>> - free_temp_mem:
>>> -	kfree(temp);
>>> - unregister_name:
>>> -	if (new_hwmon_device) {
>>> -		device_remove_file(hwmon->device, &dev_attr_name);
>>> -		hwmon_device_unregister(hwmon->device);
>>> -	}
>>> - free_mem:
>>> -	if (new_hwmon_device)
>>> -		kfree(hwmon);
>>> -
>>> -	return result;
>>> -}
>>> -
>>> -static void
>>> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
>>> -{
>>> -	struct thermal_hwmon_device *hwmon;
>>> -	struct thermal_hwmon_temp *temp;
>>> -
>>> -	hwmon = thermal_hwmon_lookup_by_type(tz);
>>> -	if (unlikely(!hwmon)) {
>>> -		/* Should never happen... */
>>> -		dev_dbg(&tz->device, "hwmon device lookup failed!\n");
>>> -		return;
>>> -	}
>>> -
>>> -	temp = thermal_hwmon_lookup_temp(hwmon, tz);
>>> -	if (unlikely(!temp)) {
>>> -		/* Should never happen... */
>>> -		dev_dbg(&tz->device, "temperature input lookup failed!\n");
>>> -		return;
>>> -	}
>>> -
>>> -	device_remove_file(hwmon->device, &temp->temp_input.attr);
>>> -	if (tz->ops->get_crit_temp)
>>> -		device_remove_file(hwmon->device, &temp->temp_crit.attr);
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_del(&temp->hwmon_node);
>>> -	kfree(temp);
>>> -	if (!list_empty(&hwmon->tz_list)) {
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		return;
>>> -	}
>>> -	list_del(&hwmon->node);
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	device_remove_file(hwmon->device, &dev_attr_name);
>>> -	hwmon_device_unregister(hwmon->device);
>>> -	kfree(hwmon);
>>> -}
>>> -#else
>>> -static int
>>> -thermal_add_hwmon_sysfs(struct thermal_zone_device *tz)
>>> -{
>>> -	return 0;
>>> -}
>>> -
>>> -static void
>>> -thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
>>> -{
>>> -}
>>> -#endif
>>> -
>>> -/**
>>> - * thermal_zone_bind_cooling_device - bind a cooling device to a thermal zone
>>> - * @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,
>>> -				     struct thermal_cooling_device *cdev,
>>> -				     unsigned long upper, unsigned long lower)
>>> -{
>>> -	struct thermal_instance *dev;
>>> -	struct thermal_instance *pos;
>>> -	struct thermal_zone_device *pos1;
>>> -	struct thermal_cooling_device *pos2;
>>> -	unsigned long max_state;
>>> -	int result;
>>> -
>>> -	if (trip >= tz->trips || (trip < 0 && trip != THERMAL_TRIPS_NONE))
>>> -		return -EINVAL;
>>> -
>>> -	list_for_each_entry(pos1, &thermal_tz_list, node) {
>>> -		if (pos1 == tz)
>>> -			break;
>>> -	}
>>> -	list_for_each_entry(pos2, &thermal_cdev_list, node) {
>>> -		if (pos2 == cdev)
>>> -			break;
>>> -	}
>>> -
>>> -	if (tz != pos1 || cdev != pos2)
>>> -		return -EINVAL;
>>> -
>>> -	cdev->ops->get_max_state(cdev, &max_state);
>>> -
>>> -	/* lower default 0, upper default max_state */
>>> -	lower = lower == THERMAL_NO_LIMIT ? 0 : lower;
>>> -	upper = upper == THERMAL_NO_LIMIT ? max_state : upper;
>>> -
>>> -	if (lower > upper || upper > max_state)
>>> -		return -EINVAL;
>>> -
>>> -	dev =
>>> -	    kzalloc(sizeof(struct thermal_instance), GFP_KERNEL);
>>> -	if (!dev)
>>> -		return -ENOMEM;
>>> -	dev->tz = tz;
>>> -	dev->cdev = cdev;
>>> -	dev->trip = trip;
>>> -	dev->upper = upper;
>>> -	dev->lower = lower;
>>> -	dev->target = THERMAL_NO_TARGET;
>>> -
>>> -	result = get_idr(&tz->idr, &tz->lock, &dev->id);
>>> -	if (result)
>>> -		goto free_mem;
>>> -
>>> -	sprintf(dev->name, "cdev%d", dev->id);
>>> -	result =
>>> -	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
>>> -	if (result)
>>> -		goto release_idr;
>>> -
>>> -	sprintf(dev->attr_name, "cdev%d_trip_point", dev->id);
>>> -	sysfs_attr_init(&dev->attr.attr);
>>> -	dev->attr.attr.name = dev->attr_name;
>>> -	dev->attr.attr.mode = 0444;
>>> -	dev->attr.show = thermal_cooling_device_trip_point_show;
>>> -	result = device_create_file(&tz->device, &dev->attr);
>>> -	if (result)
>>> -		goto remove_symbol_link;
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -	mutex_lock(&cdev->lock);
>>> -	list_for_each_entry(pos, &tz->thermal_instances, tz_node)
>>> -	    if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> -		result = -EEXIST;
>>> -		break;
>>> -	}
>>> -	if (!result) {
>>> -		list_add_tail(&dev->tz_node, &tz->thermal_instances);
>>> -		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
>>> -	}
>>> -	mutex_unlock(&cdev->lock);
>>> -	mutex_unlock(&tz->lock);
>>> -
>>> -	if (!result)
>>> -		return 0;
>>> -
>>> -	device_remove_file(&tz->device, &dev->attr);
>>> -remove_symbol_link:
>>> -	sysfs_remove_link(&tz->device.kobj, dev->name);
>>> -release_idr:
>>> -	release_idr(&tz->idr, &tz->lock, dev->id);
>>> -free_mem:
>>> -	kfree(dev);
>>> -	return result;
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_bind_cooling_device);
>>> -
>>> -/**
>>> - * thermal_zone_unbind_cooling_device - unbind a cooling device from a thermal zone
>>> - * @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,
>>> -				       struct thermal_cooling_device *cdev)
>>> -{
>>> -	struct thermal_instance *pos, *next;
>>> -
>>> -	mutex_lock(&tz->lock);
>>> -	mutex_lock(&cdev->lock);
>>> -	list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) {
>>> -		if (pos->tz == tz && pos->trip == trip && pos->cdev == cdev) {
>>> -			list_del(&pos->tz_node);
>>> -			list_del(&pos->cdev_node);
>>> -			mutex_unlock(&cdev->lock);
>>> -			mutex_unlock(&tz->lock);
>>> -			goto unbind;
>>> -		}
>>> -	}
>>> -	mutex_unlock(&cdev->lock);
>>> -	mutex_unlock(&tz->lock);
>>> -
>>> -	return -ENODEV;
>>> -
>>> -unbind:
>>> -	device_remove_file(&tz->device, &pos->attr);
>>> -	sysfs_remove_link(&tz->device.kobj, pos->name);
>>> -	release_idr(&tz->idr, &tz->lock, pos->id);
>>> -	kfree(pos);
>>> -	return 0;
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_unbind_cooling_device);
>>> -
>>> -static void thermal_release(struct device *dev)
>>> -{
>>> -	struct thermal_zone_device *tz;
>>> -	struct thermal_cooling_device *cdev;
>>> -
>>> -	if (!strncmp(dev_name(dev), "thermal_zone",
>>> -		     sizeof("thermal_zone") - 1)) {
>>> -		tz = to_thermal_zone(dev);
>>> -		kfree(tz);
>>> -	} else {
>>> -		cdev = to_cooling_device(dev);
>>> -		kfree(cdev);
>>> -	}
>>> -}
>>> -
>>> -static struct class thermal_class = {
>>> -	.name = "thermal",
>>> -	.dev_release = thermal_release,
>>> -};
>>> -
>>> -/**
>>> - * thermal_cooling_device_register - register a new thermal cooling device
>>> - * @type:	the thermal cooling device type.
>>> - * @devdata:	device private data.
>>> - * @ops:		standard thermal cooling devices callbacks.
>>> - */
>>> -struct thermal_cooling_device *
>>> -thermal_cooling_device_register(char *type, void *devdata,
>>> -				const struct thermal_cooling_device_ops *ops)
>>> -{
>>> -	struct thermal_cooling_device *cdev;
>>> -	int result;
>>> -
>>> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	if (!ops || !ops->get_max_state || !ops->get_cur_state ||
>>> -	    !ops->set_cur_state)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	cdev = kzalloc(sizeof(struct thermal_cooling_device), GFP_KERNEL);
>>> -	if (!cdev)
>>> -		return ERR_PTR(-ENOMEM);
>>> -
>>> -	result = get_idr(&thermal_cdev_idr, &thermal_idr_lock, &cdev->id);
>>> -	if (result) {
>>> -		kfree(cdev);
>>> -		return ERR_PTR(result);
>>> -	}
>>> -
>>> -	strcpy(cdev->type, type ? : "");
>>> -	mutex_init(&cdev->lock);
>>> -	INIT_LIST_HEAD(&cdev->thermal_instances);
>>> -	cdev->ops = ops;
>>> -	cdev->updated = true;
>>> -	cdev->device.class = &thermal_class;
>>> -	cdev->devdata = devdata;
>>> -	dev_set_name(&cdev->device, "cooling_device%d", cdev->id);
>>> -	result = device_register(&cdev->device);
>>> -	if (result) {
>>> -		release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> -		kfree(cdev);
>>> -		return ERR_PTR(result);
>>> -	}
>>> -
>>> -	/* sys I/F */
>>> -	if (type) {
>>> -		result = device_create_file(&cdev->device, &dev_attr_cdev_type);
>>> -		if (result)
>>> -			goto unregister;
>>> -	}
>>> -
>>> -	result = device_create_file(&cdev->device, &dev_attr_max_state);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	result = device_create_file(&cdev->device, &dev_attr_cur_state);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	/* Add 'this' new cdev to the global cdev list */
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_add(&cdev->node, &thermal_cdev_list);
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	/* Update binding information for 'this' new cdev */
>>> -	bind_cdev(cdev);
>>> -
>>> -	return cdev;
>>> -
>>> -unregister:
>>> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> -	device_unregister(&cdev->device);
>>> -	return ERR_PTR(result);
>>> -}
>>> -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
>>> - * longer needed.
>>> - */
>>> -void thermal_cooling_device_unregister(struct thermal_cooling_device *cdev)
>>> -{
>>> -	int i;
>>> -	const struct thermal_zone_params *tzp;
>>> -	struct thermal_zone_device *tz;
>>> -	struct thermal_cooling_device *pos = NULL;
>>> -
>>> -	if (!cdev)
>>> -		return;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_for_each_entry(pos, &thermal_cdev_list, node)
>>> -	    if (pos == cdev)
>>> -		break;
>>> -	if (pos != cdev) {
>>> -		/* thermal cooling device not found */
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		return;
>>> -	}
>>> -	list_del(&cdev->node);
>>> -
>>> -	/* Unbind all thermal zones associated with 'this' cdev */
>>> -	list_for_each_entry(tz, &thermal_tz_list, node) {
>>> -		if (tz->ops->unbind) {
>>> -			tz->ops->unbind(tz, cdev);
>>> -			continue;
>>> -		}
>>> -
>>> -		if (!tz->tzp || !tz->tzp->tbp)
>>> -			continue;
>>> -
>>> -		tzp = tz->tzp;
>>> -		for (i = 0; i < tzp->num_tbps; i++) {
>>> -			if (tzp->tbp[i].cdev == cdev) {
>>> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
>>> -				tzp->tbp[i].cdev = NULL;
>>> -			}
>>> -		}
>>> -	}
>>> -
>>> -	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_max_state);
>>> -	device_remove_file(&cdev->device, &dev_attr_cur_state);
>>> -
>>> -	release_idr(&thermal_cdev_idr, &thermal_idr_lock, cdev->id);
>>> -	device_unregister(&cdev->device);
>>> -	return;
>>> -}
>>> -EXPORT_SYMBOL(thermal_cooling_device_unregister);
>>> -
>>> -void thermal_cdev_update(struct thermal_cooling_device *cdev)
>>> -{
>>> -	struct thermal_instance *instance;
>>> -	unsigned long target = 0;
>>> -
>>> -	/* cooling device is updated*/
>>> -	if (cdev->updated)
>>> -		return;
>>> -
>>> -	mutex_lock(&cdev->lock);
>>> -	/* Make sure cdev enters the deepest cooling state */
>>> -	list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) {
>>> -		if (instance->target == THERMAL_NO_TARGET)
>>> -			continue;
>>> -		if (instance->target > target)
>>> -			target = instance->target;
>>> -	}
>>> -	mutex_unlock(&cdev->lock);
>>> -	cdev->ops->set_cur_state(cdev, target);
>>> -	cdev->updated = true;
>>> -}
>>> -EXPORT_SYMBOL(thermal_cdev_update);
>>> -
>>> -/**
>>> - * notify_thermal_framework - Sensor drivers use this API to notify framework
>>> - * @tz:		thermal zone device
>>> - * @trip:	indicates which trip point has been crossed
>>> - *
>>> - * This function handles the trip events from sensor drivers. It starts
>>> - * throttling the cooling devices according to the policy configured.
>>> - * For CRITICAL and HOT trip points, this notifies the respective drivers,
>>> - * and does actual throttling for other trip points i.e ACTIVE and PASSIVE.
>>> - * The throttling policy is based on the configured platform data; if no
>>> - * platform data is provided, this uses the step_wise throttling policy.
>>> - */
>>> -void notify_thermal_framework(struct thermal_zone_device *tz, int trip)
>>> -{
>>> -	handle_thermal_trip(tz, trip);
>>> -}
>>> -EXPORT_SYMBOL(notify_thermal_framework);
>>> -
>>> -/**
>>> - * create_trip_attrs - create attributes for trip points
>>> - * @tz:		the thermal zone device
>>> - * @mask:	Writeable trip point bitmap.
>>> - */
>>> -static int create_trip_attrs(struct thermal_zone_device *tz, int mask)
>>> -{
>>> -	int indx;
>>> -	int size = sizeof(struct thermal_attr) * tz->trips;
>>> -
>>> -	tz->trip_type_attrs = kzalloc(size, GFP_KERNEL);
>>> -	if (!tz->trip_type_attrs)
>>> -		return -ENOMEM;
>>> -
>>> -	tz->trip_temp_attrs = kzalloc(size, GFP_KERNEL);
>>> -	if (!tz->trip_temp_attrs) {
>>> -		kfree(tz->trip_type_attrs);
>>> -		return -ENOMEM;
>>> -	}
>>> -
>>> -	if (tz->ops->get_trip_hyst) {
>>> -		tz->trip_hyst_attrs = kzalloc(size, GFP_KERNEL);
>>> -		if (!tz->trip_hyst_attrs) {
>>> -			kfree(tz->trip_type_attrs);
>>> -			kfree(tz->trip_temp_attrs);
>>> -			return -ENOMEM;
>>> -		}
>>> -	}
>>> -
>>> -
>>> -	for (indx = 0; indx < tz->trips; indx++) {
>>> -		/* create trip type attribute */
>>> -		snprintf(tz->trip_type_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> -			 "trip_point_%d_type", indx);
>>> -
>>> -		sysfs_attr_init(&tz->trip_type_attrs[indx].attr.attr);
>>> -		tz->trip_type_attrs[indx].attr.attr.name =
>>> -						tz->trip_type_attrs[indx].name;
>>> -		tz->trip_type_attrs[indx].attr.attr.mode = S_IRUGO;
>>> -		tz->trip_type_attrs[indx].attr.show = trip_point_type_show;
>>> -
>>> -		device_create_file(&tz->device,
>>> -				   &tz->trip_type_attrs[indx].attr);
>>> -
>>> -		/* create trip temp attribute */
>>> -		snprintf(tz->trip_temp_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> -			 "trip_point_%d_temp", indx);
>>> -
>>> -		sysfs_attr_init(&tz->trip_temp_attrs[indx].attr.attr);
>>> -		tz->trip_temp_attrs[indx].attr.attr.name =
>>> -						tz->trip_temp_attrs[indx].name;
>>> -		tz->trip_temp_attrs[indx].attr.attr.mode = S_IRUGO;
>>> -		tz->trip_temp_attrs[indx].attr.show = trip_point_temp_show;
>>> -		if (mask & (1 << indx)) {
>>> -			tz->trip_temp_attrs[indx].attr.attr.mode |= S_IWUSR;
>>> -			tz->trip_temp_attrs[indx].attr.store =
>>> -							trip_point_temp_store;
>>> -		}
>>> -
>>> -		device_create_file(&tz->device,
>>> -				   &tz->trip_temp_attrs[indx].attr);
>>> -
>>> -		/* create Optional trip hyst attribute */
>>> -		if (!tz->ops->get_trip_hyst)
>>> -			continue;
>>> -		snprintf(tz->trip_hyst_attrs[indx].name, THERMAL_NAME_LENGTH,
>>> -			 "trip_point_%d_hyst", indx);
>>> -
>>> -		sysfs_attr_init(&tz->trip_hyst_attrs[indx].attr.attr);
>>> -		tz->trip_hyst_attrs[indx].attr.attr.name =
>>> -					tz->trip_hyst_attrs[indx].name;
>>> -		tz->trip_hyst_attrs[indx].attr.attr.mode = S_IRUGO;
>>> -		tz->trip_hyst_attrs[indx].attr.show = trip_point_hyst_show;
>>> -		if (tz->ops->set_trip_hyst) {
>>> -			tz->trip_hyst_attrs[indx].attr.attr.mode |= S_IWUSR;
>>> -			tz->trip_hyst_attrs[indx].attr.store =
>>> -					trip_point_hyst_store;
>>> -		}
>>> -
>>> -		device_create_file(&tz->device,
>>> -				   &tz->trip_hyst_attrs[indx].attr);
>>> -	}
>>> -	return 0;
>>> -}
>>> -
>>> -static void remove_trip_attrs(struct thermal_zone_device *tz)
>>> -{
>>> -	int indx;
>>> -
>>> -	for (indx = 0; indx < tz->trips; indx++) {
>>> -		device_remove_file(&tz->device,
>>> -				   &tz->trip_type_attrs[indx].attr);
>>> -		device_remove_file(&tz->device,
>>> -				   &tz->trip_temp_attrs[indx].attr);
>>> -		if (tz->ops->get_trip_hyst)
>>> -			device_remove_file(&tz->device,
>>> -				  &tz->trip_hyst_attrs[indx].attr);
>>> -	}
>>> -	kfree(tz->trip_type_attrs);
>>> -	kfree(tz->trip_temp_attrs);
>>> -	kfree(tz->trip_hyst_attrs);
>>> -}
>>> -
>>> -/**
>>> - * thermal_zone_device_register - register a new thermal zone device
>>> - * @type:	the thermal zone device type
>>> - * @trips:	the number of trip points the thermal zone support
>>> - * @mask:	a bit string indicating the writeablility of trip points
>>> - * @devdata:	private device data
>>> - * @ops:	standard thermal zone device callbacks
>>> - * @tzp:	thermal zone platform parameters
>>> - * @passive_delay: number of milliseconds to wait between polls when
>>> - *		   performing passive cooling
>>> - * @polling_delay: number of milliseconds to wait between polls when checking
>>> - *		   whether trip points have been crossed (0 for interrupt
>>> - *		   driven systems)
>>> - *
>>> - * thermal_zone_device_unregister() must be called when the device is no
>>> - * longer needed. The passive cooling depends on the .get_trend() return value.
>>> - */
>>> -struct thermal_zone_device *thermal_zone_device_register(const char *type,
>>> -	int trips, int mask, void *devdata,
>>> -	const struct thermal_zone_device_ops *ops,
>>> -	const struct thermal_zone_params *tzp,
>>> -	int passive_delay, int polling_delay)
>>> -{
>>> -	struct thermal_zone_device *tz;
>>> -	enum thermal_trip_type trip_type;
>>> -	int result;
>>> -	int count;
>>> -	int passive = 0;
>>> -
>>> -	if (type && strlen(type) >= THERMAL_NAME_LENGTH)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	if (trips > THERMAL_MAX_TRIPS || trips < 0 || mask >> trips)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	if (!ops || !ops->get_temp)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	if (trips > 0 && !ops->get_trip_type)
>>> -		return ERR_PTR(-EINVAL);
>>> -
>>> -	tz = kzalloc(sizeof(struct thermal_zone_device), GFP_KERNEL);
>>> -	if (!tz)
>>> -		return ERR_PTR(-ENOMEM);
>>> -
>>> -	INIT_LIST_HEAD(&tz->thermal_instances);
>>> -	idr_init(&tz->idr);
>>> -	mutex_init(&tz->lock);
>>> -	result = get_idr(&thermal_tz_idr, &thermal_idr_lock, &tz->id);
>>> -	if (result) {
>>> -		kfree(tz);
>>> -		return ERR_PTR(result);
>>> -	}
>>> -
>>> -	strcpy(tz->type, type ? : "");
>>> -	tz->ops = ops;
>>> -	tz->tzp = tzp;
>>> -	tz->device.class = &thermal_class;
>>> -	tz->devdata = devdata;
>>> -	tz->trips = trips;
>>> -	tz->passive_delay = passive_delay;
>>> -	tz->polling_delay = polling_delay;
>>> -
>>> -	dev_set_name(&tz->device, "thermal_zone%d", tz->id);
>>> -	result = device_register(&tz->device);
>>> -	if (result) {
>>> -		release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> -		kfree(tz);
>>> -		return ERR_PTR(result);
>>> -	}
>>> -
>>> -	/* sys I/F */
>>> -	if (type) {
>>> -		result = device_create_file(&tz->device, &dev_attr_type);
>>> -		if (result)
>>> -			goto unregister;
>>> -	}
>>> -
>>> -	result = device_create_file(&tz->device, &dev_attr_temp);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	if (ops->get_mode) {
>>> -		result = device_create_file(&tz->device, &dev_attr_mode);
>>> -		if (result)
>>> -			goto unregister;
>>> -	}
>>> -
>>> -	result = create_trip_attrs(tz, mask);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	for (count = 0; count < trips; count++) {
>>> -		tz->ops->get_trip_type(tz, count, &trip_type);
>>> -		if (trip_type == THERMAL_TRIP_PASSIVE)
>>> -			passive = 1;
>>> -	}
>>> -
>>> -	if (!passive) {
>>> -		result = device_create_file(&tz->device, &dev_attr_passive);
>>> -		if (result)
>>> -			goto unregister;
>>> -	}
>>> -
>>> -#ifdef CONFIG_THERMAL_EMULATION
>>> -	result = device_create_file(&tz->device, &dev_attr_emul_temp);
>>> -	if (result)
>>> -		goto unregister;
>>> -#endif
>>> -	/* Create policy attribute */
>>> -	result = device_create_file(&tz->device, &dev_attr_policy);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	/* Update 'this' zone's governor information */
>>> -	mutex_lock(&thermal_governor_lock);
>>> -
>>> -	if (tz->tzp)
>>> -		tz->governor = __find_governor(tz->tzp->governor_name);
>>> -	else
>>> -		tz->governor = __find_governor(DEFAULT_THERMAL_GOVERNOR);
>>> -
>>> -	mutex_unlock(&thermal_governor_lock);
>>> -
>>> -	result = thermal_add_hwmon_sysfs(tz);
>>> -	if (result)
>>> -		goto unregister;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_add_tail(&tz->node, &thermal_tz_list);
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	/* Bind cooling devices for this zone */
>>> -	bind_tz(tz);
>>> -
>>> -	INIT_DELAYED_WORK(&(tz->poll_queue), thermal_zone_device_check);
>>> -
>>> -	thermal_zone_device_update(tz);
>>> -
>>> -	if (!result)
>>> -		return tz;
>>> -
>>> -unregister:
>>> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> -	device_unregister(&tz->device);
>>> -	return ERR_PTR(result);
>>> -}
>>> -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)
>>> -{
>>> -	int i;
>>> -	const struct thermal_zone_params *tzp;
>>> -	struct thermal_cooling_device *cdev;
>>> -	struct thermal_zone_device *pos = NULL;
>>> -
>>> -	if (!tz)
>>> -		return;
>>> -
>>> -	tzp = tz->tzp;
>>> -
>>> -	mutex_lock(&thermal_list_lock);
>>> -	list_for_each_entry(pos, &thermal_tz_list, node)
>>> -	    if (pos == tz)
>>> -		break;
>>> -	if (pos != tz) {
>>> -		/* thermal zone device not found */
>>> -		mutex_unlock(&thermal_list_lock);
>>> -		return;
>>> -	}
>>> -	list_del(&tz->node);
>>> -
>>> -	/* Unbind all cdevs associated with 'this' thermal zone */
>>> -	list_for_each_entry(cdev, &thermal_cdev_list, node) {
>>> -		if (tz->ops->unbind) {
>>> -			tz->ops->unbind(tz, cdev);
>>> -			continue;
>>> -		}
>>> -
>>> -		if (!tzp || !tzp->tbp)
>>> -			break;
>>> -
>>> -		for (i = 0; i < tzp->num_tbps; i++) {
>>> -			if (tzp->tbp[i].cdev == cdev) {
>>> -				__unbind(tz, tzp->tbp[i].trip_mask, cdev);
>>> -				tzp->tbp[i].cdev = NULL;
>>> -			}
>>> -		}
>>> -	}
>>> -
>>> -	mutex_unlock(&thermal_list_lock);
>>> -
>>> -	thermal_zone_device_set_polling(tz, 0);
>>> -
>>> -	if (tz->type[0])
>>> -		device_remove_file(&tz->device, &dev_attr_type);
>>> -	device_remove_file(&tz->device, &dev_attr_temp);
>>> -	if (tz->ops->get_mode)
>>> -		device_remove_file(&tz->device, &dev_attr_mode);
>>> -	device_remove_file(&tz->device, &dev_attr_policy);
>>> -	remove_trip_attrs(tz);
>>> -	tz->governor = NULL;
>>> -
>>> -	thermal_remove_hwmon_sysfs(tz);
>>> -	release_idr(&thermal_tz_idr, &thermal_idr_lock, tz->id);
>>> -	idr_destroy(&tz->idr);
>>> -	mutex_destroy(&tz->lock);
>>> -	device_unregister(&tz->device);
>>> -	return;
>>> -}
>>> -EXPORT_SYMBOL(thermal_zone_device_unregister);
>>> -
>>> -#ifdef CONFIG_NET
>>> -static struct genl_family thermal_event_genl_family = {
>>> -	.id = GENL_ID_GENERATE,
>>> -	.name = THERMAL_GENL_FAMILY_NAME,
>>> -	.version = THERMAL_GENL_VERSION,
>>> -	.maxattr = THERMAL_GENL_ATTR_MAX,
>>> -};
>>> -
>>> -static struct genl_multicast_group thermal_event_mcgrp = {
>>> -	.name = THERMAL_GENL_MCAST_GROUP_NAME,
>>> -};
>>> -
>>> -int thermal_generate_netlink_event(struct thermal_zone_device *tz,
>>> -					enum events event)
>>> -{
>>> -	struct sk_buff *skb;
>>> -	struct nlattr *attr;
>>> -	struct thermal_genl_event *thermal_event;
>>> -	void *msg_header;
>>> -	int size;
>>> -	int result;
>>> -	static unsigned int thermal_event_seqnum;
>>> -
>>> -	if (!tz)
>>> -		return -EINVAL;
>>> -
>>> -	/* allocate memory */
>>> -	size = nla_total_size(sizeof(struct thermal_genl_event)) +
>>> -	       nla_total_size(0);
>>> -
>>> -	skb = genlmsg_new(size, GFP_ATOMIC);
>>> -	if (!skb)
>>> -		return -ENOMEM;
>>> -
>>> -	/* add the genetlink message header */
>>> -	msg_header = genlmsg_put(skb, 0, thermal_event_seqnum++,
>>> -				 &thermal_event_genl_family, 0,
>>> -				 THERMAL_GENL_CMD_EVENT);
>>> -	if (!msg_header) {
>>> -		nlmsg_free(skb);
>>> -		return -ENOMEM;
>>> -	}
>>> -
>>> -	/* fill the data */
>>> -	attr = nla_reserve(skb, THERMAL_GENL_ATTR_EVENT,
>>> -			   sizeof(struct thermal_genl_event));
>>> -
>>> -	if (!attr) {
>>> -		nlmsg_free(skb);
>>> -		return -EINVAL;
>>> -	}
>>> -
>>> -	thermal_event = nla_data(attr);
>>> -	if (!thermal_event) {
>>> -		nlmsg_free(skb);
>>> -		return -EINVAL;
>>> -	}
>>> -
>>> -	memset(thermal_event, 0, sizeof(struct thermal_genl_event));
>>> -
>>> -	thermal_event->orig = tz->id;
>>> -	thermal_event->event = event;
>>> -
>>> -	/* send multicast genetlink message */
>>> -	result = genlmsg_end(skb, msg_header);
>>> -	if (result < 0) {
>>> -		nlmsg_free(skb);
>>> -		return result;
>>> -	}
>>> -
>>> -	result = genlmsg_multicast(skb, 0, thermal_event_mcgrp.id, GFP_ATOMIC);
>>> -	if (result)
>>> -		dev_err(&tz->device, "Failed to send netlink event:%d", result);
>>> -
>>> -	return result;
>>> -}
>>> -EXPORT_SYMBOL(thermal_generate_netlink_event);
>>> -
>>> -static int genetlink_init(void)
>>> -{
>>> -	int result;
>>> -
>>> -	result = genl_register_family(&thermal_event_genl_family);
>>> -	if (result)
>>> -		return result;
>>> -
>>> -	result = genl_register_mc_group(&thermal_event_genl_family,
>>> -					&thermal_event_mcgrp);
>>> -	if (result)
>>> -		genl_unregister_family(&thermal_event_genl_family);
>>> -	return result;
>>> -}
>>> -
>>> -static void genetlink_exit(void)
>>> -{
>>> -	genl_unregister_family(&thermal_event_genl_family);
>>> -}
>>> -#else /* !CONFIG_NET */
>>> -static inline int genetlink_init(void) { return 0; }
>>> -static inline void genetlink_exit(void) {}
>>> -#endif /* !CONFIG_NET */
>>> -
>>> -static int __init thermal_init(void)
>>> -{
>>> -	int result = 0;
>>> -
>>> -	result = class_register(&thermal_class);
>>> -	if (result) {
>>> -		idr_destroy(&thermal_tz_idr);
>>> -		idr_destroy(&thermal_cdev_idr);
>>> -		mutex_destroy(&thermal_idr_lock);
>>> -		mutex_destroy(&thermal_list_lock);
>>> -		return result;
>>> -	}
>>> -	result = genetlink_init();
>>> -	return result;
>>> -}
>>> -
>>> -static void __exit thermal_exit(void)
>>> -{
>>> -	class_unregister(&thermal_class);
>>> -	idr_destroy(&thermal_tz_idr);
>>> -	idr_destroy(&thermal_cdev_idr);
>>> -	mutex_destroy(&thermal_idr_lock);
>>> -	mutex_destroy(&thermal_list_lock);
>>> -	genetlink_exit();
>>> -}
>>> -
>>> -fs_initcall(thermal_init);
>>> -module_exit(thermal_exit);
>>>
>>
>
>
>
>

--
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