drivers/qtn/ruby/pm.c - kernel/quantenna - Git at Google

 /*
  * Copyright (c) Quantenna Communications Incorporated 2012.
  *
  * ########################################################################
  *
  * 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; either version 2 of the License, or
  * (at your option) any later version.
  *
  * 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
  *
  * ########################################################################
  *
  *
  */

 #include <linux/kernel.h>
 #include <linux/proc_fs.h>
 #include <asm/uaccess.h>
 #include <asm/board/pm.h>
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include "pm.h"

 #define STR_HELPER(x)			#x
 #define STR(x)				STR_HELPER(x)

 #define PM_PROC_FILE_NAME		"soc_pm"
 #define PM_EMAC_PROC_FILE_NAME		"emac_pm"

 #define PM_PROC_ADD_CMD			"add"
 #define PM_PROC_UPDATE_CMD		"update"
 #define PM_PROC_REMOVE_CMD		"remove"

 #define PM_MAX_NAME_LEN			64

 #define PM_PROC_PARSE_ADD_CMD		PM_PROC_ADD_CMD" %"STR(PM_MAX_NAME_LEN)"s %d"		/* syntax: "add who_ask NNN" */
 #define PM_PROC_PARSE_UPDATE_CMD	PM_PROC_UPDATE_CMD" %"STR(PM_MAX_NAME_LEN)"s %d"	/* syntax: "update who_ask NNN" */
 #define PM_PROC_PARSE_REMOVE_CMD	PM_PROC_REMOVE_CMD" %"STR(PM_MAX_NAME_LEN)"s"		/* syntax: "remove who_ask" */

 static struct workqueue_struct *pm_wq;
 static DEFINE_SPINLOCK(pm_wq_lock);

 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
 struct qtn_pm_req_list {
 	struct list_head list;
 	int class_id;
 	char req_name[16];
 	struct pm_qos_request req;
 };
 static LIST_HEAD(qtn_pm_req_list_head);
 static struct pm_qos_request *pm_emac_req;
 #else
 static struct pm_qos_request_list *pm_emac_req;
 #endif

 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
 static ssize_t pm_write_proc(struct file *file, const char __user *buffer,
 		size_t count, loff_t *f_pos)
 #else
 static int pm_write_proc(struct file *file, const char __user *buffer,
 				unsigned long count, void *data)
 #endif
 {
 	char cmd[PM_MAX_NAME_LEN + 32];
 	char name[PM_MAX_NAME_LEN + 1];
 	int val;
 	int ret = 0;

 	if (!count) {
 		return -EINVAL;
 	} else if (count > sizeof(cmd) - 1) {
 		return -EINVAL;
 	} else if (copy_from_user(cmd, buffer, count)) {
 		return -EFAULT;
 	}
 	cmd[count] = '\0';

 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
 	switch ((int)PDE_DATA(file_inode(file))) {
 #else
 	switch ((int)data) {
 #endif
 	case PM_QOS_POWER_SAVE:
 		if (sscanf(cmd, PM_PROC_PARSE_ADD_CMD, name, &val) == 2) {
 			ret = pm_qos_add_requirement(PM_QOS_POWER_SAVE, name, val);
 		} else if (sscanf(cmd, PM_PROC_PARSE_UPDATE_CMD, name, &val) == 2) {
 			ret = pm_qos_update_requirement(PM_QOS_POWER_SAVE, name, val);
 		} else if (sscanf(cmd, PM_PROC_PARSE_REMOVE_CMD, name) == 1) {
 			pm_qos_remove_requirement(PM_QOS_POWER_SAVE, name);
 		} else {
 			ret = -EINVAL;
 		}
 		break;
 	case PM_QOS_POWER_EMAC:
 		if (sscanf(cmd, "%d", &val) == 1) {
 			pm_qos_update_request(pm_emac_req, val);
 		} else {
 			ret = -EINVAL;
 		}
 		break;
 	default:
 		ret = -EINVAL;
 		break;
 	}

 	return ret ? ret : count;
 }

 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
 static int pm_show(struct seq_file *seq, void *v)
 {
 	int class_id = (int)seq->private;

 	seq_printf(seq, "class=%d, level=%d\n", class_id, pm_qos_requirement(class_id));
 	return 0;
 }

 static int pm_open_proc(struct inode *inode, struct file *file)
 {
 	return single_open(file, pm_show, PDE_DATA(inode));
 }

 static const struct file_operations pm_save_fops = {
 	.owner = THIS_MODULE,
 	.open = pm_open_proc,
 	.write = pm_write_proc,
 	.read = seq_read,
 };
 #else
 static int pm_read_proc(char *page, char **start, off_t off, int count, int *eof, void *data)
 {
 	return sprintf(page, "%d", pm_qos_requirement((int)data));
 }
 #endif

 static int __init pm_create_proc(void)
 {
 	struct proc_dir_entry *entry;
 	struct proc_dir_entry *emac_proc_entry;
 	/*
 	 * Proc interface to change power save levels.
 	 * Main purpose is debugging.
 	 * Other kernel modules can directly use pm_qos_*() functions.
 	 * User-space application (safe way) can open misc character device
 	 * (major number 10, minor see by "cat /proc/misc")
 	 * provided by PM QoS kernel module and control through it.
 	 * It is safe because 'name' is chosen based on PID,
 	 * and when application quit all its requests are removed.
 	 */

 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
 	entry = proc_create_data(PM_PROC_FILE_NAME, 0600, NULL, &pm_save_fops, (void *)PM_QOS_POWER_SAVE);
 	if (!entry) {
 		return -ENODEV;
 	}

 	emac_proc_entry = proc_create_data(PM_EMAC_PROC_FILE_NAME, 0600, NULL, &pm_save_fops, (void *)PM_QOS_POWER_EMAC);
 	if (!emac_proc_entry) {
 		return -ENODEV;
 	}
 #else
 	entry = create_proc_entry(PM_PROC_FILE_NAME, 0600, NULL);
 	if (!entry) {
 		return -ENODEV;
 	}
 	entry->write_proc = pm_write_proc;
 	entry->read_proc = pm_read_proc;
 	entry->data = (void *)PM_QOS_POWER_SAVE;

 	emac_proc_entry = create_proc_entry(PM_EMAC_PROC_FILE_NAME, 0600, NULL);
 	if (!emac_proc_entry) {
 		return -ENODEV;
 	}
 	emac_proc_entry->write_proc = pm_write_proc;
 	emac_proc_entry->read_proc = pm_read_proc;
 	emac_proc_entry->data = (void *)PM_QOS_POWER_EMAC;
 #endif
 	return 0;
 }

 static void __init pm_create_wq(void)
 {
 	pm_wq = create_workqueue("ruby_pm");
 }

 static int __init pm_init(void)
 {
 	pm_qos_add_requirement(PM_QOS_POWER_SAVE, BOARD_PM_GOVERNOR_QCSAPI, BOARD_PM_LEVEL_INIT);
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
 	if(NULL == (pm_emac_req = kzalloc(sizeof(*pm_emac_req), GFP_KERNEL))) {
 		return -ENOMEM;
 	}
 	pm_qos_add_request(pm_emac_req, PM_QOS_POWER_EMAC, BOARD_PM_LEVEL_NO);
 #else
 	pm_emac_req = pm_qos_add_request(PM_QOS_POWER_EMAC, BOARD_PM_LEVEL_NO);
 	if (!pm_emac_req)
 		return -ENOMEM;
 #endif
 	pm_create_wq();
 	return pm_create_proc();
 }
 arch_initcall(pm_init);

 static int __pm_cancel_work(struct delayed_work *dwork)
 {
 	int ret = 0;

 	if (delayed_work_pending(dwork)) {
 		cancel_delayed_work(dwork);
 		ret = 1;
 	} else if (work_pending(&dwork->work)) {
 		cancel_work_sync(&dwork->work);
 		ret = 1;
 	}

 	return ret;
 }

 int pm_queue_work(struct delayed_work *dwork, unsigned long delay)
 {
 	unsigned long flags;
 	int ret = 0;

 	spin_lock_irqsave(&pm_wq_lock, flags);

 	ret = __pm_cancel_work(dwork);
 	queue_delayed_work(pm_wq, dwork, delay);

 	spin_unlock_irqrestore(&pm_wq_lock, flags);

 	return ret;
 }
 EXPORT_SYMBOL(pm_queue_work);

 int pm_cancel_work(struct delayed_work *dwork)
 {
 	unsigned long flags;
 	int ret = 0;

 	spin_lock_irqsave(&pm_wq_lock, flags);

 	ret = __pm_cancel_work(dwork);

 	spin_unlock_irqrestore(&pm_wq_lock, flags);

 	return ret;
 }
 EXPORT_SYMBOL(pm_cancel_work);

 int pm_flush_work(struct delayed_work *dwork)
 {
 	might_sleep();
 	return cancel_delayed_work_sync(dwork);
 }
 EXPORT_SYMBOL(pm_flush_work);

 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,24)
 int pm_qos_add_requirement(int pm_qos_class, const char *name, s32 value)
 {
 	struct qtn_pm_req_list *req_list = NULL;

 	if ((NULL == name) || (pm_qos_class < PM_QOS_POWER_SAVE)
 		|| (pm_qos_class > PM_QOS_POWER_EMAC)) {
 		return -EINVAL;
 	}

 	list_for_each_entry(req_list, &qtn_pm_req_list_head, list) {
 		if ((pm_qos_class == req_list->class_id)
 			&& !strncmp(name, req_list->req_name, sizeof(req_list->req_name))) {
 			return -EEXIST;
 		}
 	}

 	if(NULL == (req_list = kzalloc(sizeof(*req_list), GFP_KERNEL))) {
 		return -ENOMEM;
 	}
 	req_list->class_id = pm_qos_class;
 	strncpy(req_list->req_name, name, sizeof(req_list->req_name));

 	pm_qos_add_request(&req_list->req, pm_qos_class, value);

 	list_add(&req_list->list, &qtn_pm_req_list_head);
 	return 0;
 }
 EXPORT_SYMBOL(pm_qos_add_requirement);

 int pm_qos_update_requirement(int pm_qos_class, const char *name, s32 new_value)
 {
 	struct qtn_pm_req_list *req_list = NULL;

 	if ((NULL == name) || (pm_qos_class < PM_QOS_POWER_SAVE)
 		|| (pm_qos_class > PM_QOS_POWER_EMAC)) {
 		return -EINVAL;
 	}

 	printk("%s: name=%s, value=%d\n", __func__, name, new_value);

 	list_for_each_entry(req_list, &qtn_pm_req_list_head, list) {
 		if ((pm_qos_class == req_list->class_id)
 			&& !strncmp(name, req_list->req_name, sizeof(req_list->req_name))) {
 			pm_qos_update_request(&req_list->req, new_value);
 			return 0;
 		}
 	}

 	return 0;
 }
 EXPORT_SYMBOL(pm_qos_update_requirement);

 void pm_qos_remove_requirement(int pm_qos_class, const char *name)
 {
 	struct qtn_pm_req_list *req_list = NULL;

 	if ((NULL == name) || (pm_qos_class < PM_QOS_POWER_SAVE)
 		|| (pm_qos_class > PM_QOS_POWER_EMAC)) {
 		return ;
 	}

 	list_for_each_entry(req_list, &qtn_pm_req_list_head, list) {
 		if ((pm_qos_class == req_list->class_id)
 			&& !strncmp(name, req_list->req_name, sizeof(req_list->req_name))) {
 			break;
 		}
 	}
 	pm_qos_remove_request(&req_list->req);
 	list_del(&req_list->list);
 	kfree(req_list);
 }
 EXPORT_SYMBOL(pm_qos_remove_requirement);

 int pm_qos_requirement(int pm_qos_class)
 {
 	return pm_qos_request(pm_qos_class);
 }
 EXPORT_SYMBOL(pm_qos_requirement);
 #endif

 MODULE_AUTHOR("Quantenna");
 MODULE_LICENSE("GPL");
	/*
	* Copyright (c) Quantenna Communications Incorporated 2012.
	*
	* ########################################################################
	*
	* 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; either version 2 of the License, or
	* (at your option) any later version.
	*
	* 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
	*
	* ########################################################################
	*
	*
	*/

	#include <linux/kernel.h>
	#include <linux/proc_fs.h>
	#include <asm/uaccess.h>
	#include <asm/board/pm.h>
	#include <linux/seq_file.h>
	#include <linux/slab.h>
	#include "pm.h"

	#define STR_HELPER(x) #x
	#define STR(x) STR_HELPER(x)

	#define PM_PROC_FILE_NAME "soc_pm"
	#define PM_EMAC_PROC_FILE_NAME "emac_pm"

	#define PM_PROC_ADD_CMD "add"
	#define PM_PROC_UPDATE_CMD "update"
	#define PM_PROC_REMOVE_CMD "remove"

	#define PM_MAX_NAME_LEN 64

	#define PM_PROC_PARSE_ADD_CMD PM_PROC_ADD_CMD" %"STR(PM_MAX_NAME_LEN)"s %d" /* syntax: "add who_ask NNN" */
	#define PM_PROC_PARSE_UPDATE_CMD PM_PROC_UPDATE_CMD" %"STR(PM_MAX_NAME_LEN)"s %d" /* syntax: "update who_ask NNN" */
	#define PM_PROC_PARSE_REMOVE_CMD PM_PROC_REMOVE_CMD" %"STR(PM_MAX_NAME_LEN)"s" /* syntax: "remove who_ask" */

	static struct workqueue_struct *pm_wq;
	static DEFINE_SPINLOCK(pm_wq_lock);

	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
	struct qtn_pm_req_list {
	struct list_head list;
	int class_id;
	char req_name[16];
	struct pm_qos_request req;
	};
	static LIST_HEAD(qtn_pm_req_list_head);
	static struct pm_qos_request *pm_emac_req;
	#else
	static struct pm_qos_request_list *pm_emac_req;
	#endif

	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
	static ssize_t pm_write_proc(struct file file, const char __user buffer,
	size_t count, loff_t *f_pos)
	#else
	static int pm_write_proc(struct file file, const char __user buffer,
	unsigned long count, void *data)
	#endif
	{
	char cmd[PM_MAX_NAME_LEN + 32];
	char name[PM_MAX_NAME_LEN + 1];
	int val;
	int ret = 0;

	if (!count) {
	return -EINVAL;
	} else if (count > sizeof(cmd) - 1) {
	return -EINVAL;
	} else if (copy_from_user(cmd, buffer, count)) {
	return -EFAULT;
	}
	cmd[count] = '\0';

	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
	switch ((int)PDE_DATA(file_inode(file))) {
	#else
	switch ((int)data) {
	#endif
	case PM_QOS_POWER_SAVE:
	if (sscanf(cmd, PM_PROC_PARSE_ADD_CMD, name, &val) == 2) {
	ret = pm_qos_add_requirement(PM_QOS_POWER_SAVE, name, val);
	} else if (sscanf(cmd, PM_PROC_PARSE_UPDATE_CMD, name, &val) == 2) {
	ret = pm_qos_update_requirement(PM_QOS_POWER_SAVE, name, val);
	} else if (sscanf(cmd, PM_PROC_PARSE_REMOVE_CMD, name) == 1) {
	pm_qos_remove_requirement(PM_QOS_POWER_SAVE, name);
	} else {
	ret = -EINVAL;
	}
	break;
	case PM_QOS_POWER_EMAC:
	if (sscanf(cmd, "%d", &val) == 1) {
	pm_qos_update_request(pm_emac_req, val);
	} else {
	ret = -EINVAL;
	}
	break;
	default:
	ret = -EINVAL;
	break;
	}

	return ret ? ret : count;
	}

	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
	static int pm_show(struct seq_file seq, void v)
	{
	int class_id = (int)seq->private;

	seq_printf(seq, "class=%d, level=%d\n", class_id, pm_qos_requirement(class_id));
	return 0;
	}

	static int pm_open_proc(struct inode inode, struct file file)
	{
	return single_open(file, pm_show, PDE_DATA(inode));
	}

	static const struct file_operations pm_save_fops = {
	.owner = THIS_MODULE,
	.open = pm_open_proc,
	.write = pm_write_proc,
	.read = seq_read,
	};
	#else
	static int pm_read_proc(char page, char start, off_t off, int count, int eof, void *data)
	{
	return sprintf(page, "%d", pm_qos_requirement((int)data));
	}
	#endif

	static int __init pm_create_proc(void)
	{
	struct proc_dir_entry *entry;
	struct proc_dir_entry *emac_proc_entry;
	/*
	* Proc interface to change power save levels.
	* Main purpose is debugging.
	* Other kernel modules can directly use pm_qos_*() functions.
	* User-space application (safe way) can open misc character device
	* (major number 10, minor see by "cat /proc/misc")
	* provided by PM QoS kernel module and control through it.
	* It is safe because 'name' is chosen based on PID,
	* and when application quit all its requests are removed.
	*/

	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
	entry = proc_create_data(PM_PROC_FILE_NAME, 0600, NULL, &pm_save_fops, (void *)PM_QOS_POWER_SAVE);
	if (!entry) {
	return -ENODEV;
	}

	emac_proc_entry = proc_create_data(PM_EMAC_PROC_FILE_NAME, 0600, NULL, &pm_save_fops, (void *)PM_QOS_POWER_EMAC);
	if (!emac_proc_entry) {
	return -ENODEV;
	}
	#else
	entry = create_proc_entry(PM_PROC_FILE_NAME, 0600, NULL);
	if (!entry) {
	return -ENODEV;
	}
	entry->write_proc = pm_write_proc;
	entry->read_proc = pm_read_proc;
	entry->data = (void *)PM_QOS_POWER_SAVE;

	emac_proc_entry = create_proc_entry(PM_EMAC_PROC_FILE_NAME, 0600, NULL);
	if (!emac_proc_entry) {
	return -ENODEV;
	}
	emac_proc_entry->write_proc = pm_write_proc;
	emac_proc_entry->read_proc = pm_read_proc;
	emac_proc_entry->data = (void *)PM_QOS_POWER_EMAC;
	#endif
	return 0;
	}

	static void __init pm_create_wq(void)
	{
	pm_wq = create_workqueue("ruby_pm");
	}

	static int __init pm_init(void)
	{
	pm_qos_add_requirement(PM_QOS_POWER_SAVE, BOARD_PM_GOVERNOR_QCSAPI, BOARD_PM_LEVEL_INIT);
	#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
	if(NULL == (pm_emac_req = kzalloc(sizeof(*pm_emac_req), GFP_KERNEL))) {
	return -ENOMEM;
	}
	pm_qos_add_request(pm_emac_req, PM_QOS_POWER_EMAC, BOARD_PM_LEVEL_NO);
	#else
	pm_emac_req = pm_qos_add_request(PM_QOS_POWER_EMAC, BOARD_PM_LEVEL_NO);
	if (!pm_emac_req)
	return -ENOMEM;
	#endif
	pm_create_wq();
	return pm_create_proc();
	}
	arch_initcall(pm_init);

	static int __pm_cancel_work(struct delayed_work *dwork)
	{
	int ret = 0;

	if (delayed_work_pending(dwork)) {
	cancel_delayed_work(dwork);
	ret = 1;
	} else if (work_pending(&dwork->work)) {
	cancel_work_sync(&dwork->work);
	ret = 1;
	}

	return ret;
	}

	int pm_queue_work(struct delayed_work *dwork, unsigned long delay)
	{
	unsigned long flags;
	int ret = 0;

	spin_lock_irqsave(&pm_wq_lock, flags);

	ret = __pm_cancel_work(dwork);
	queue_delayed_work(pm_wq, dwork, delay);

	spin_unlock_irqrestore(&pm_wq_lock, flags);

	return ret;
	}
	EXPORT_SYMBOL(pm_queue_work);

	int pm_cancel_work(struct delayed_work *dwork)
	{
	unsigned long flags;
	int ret = 0;

	spin_lock_irqsave(&pm_wq_lock, flags);

	ret = __pm_cancel_work(dwork);

	spin_unlock_irqrestore(&pm_wq_lock, flags);

	return ret;
	}
	EXPORT_SYMBOL(pm_cancel_work);

	int pm_flush_work(struct delayed_work *dwork)
	{
	might_sleep();
	return cancel_delayed_work_sync(dwork);
	}
	EXPORT_SYMBOL(pm_flush_work);

	#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,14,24)
	int pm_qos_add_requirement(int pm_qos_class, const char *name, s32 value)
	{
	struct qtn_pm_req_list *req_list = NULL;

	if ((NULL == name) \|\| (pm_qos_class < PM_QOS_POWER_SAVE)
	\|\| (pm_qos_class > PM_QOS_POWER_EMAC)) {
	return -EINVAL;
	}

	list_for_each_entry(req_list, &qtn_pm_req_list_head, list) {
	if ((pm_qos_class == req_list->class_id)
	&& !strncmp(name, req_list->req_name, sizeof(req_list->req_name))) {
	return -EEXIST;
	}
	}

	if(NULL == (req_list = kzalloc(sizeof(*req_list), GFP_KERNEL))) {
	return -ENOMEM;
	}
	req_list->class_id = pm_qos_class;
	strncpy(req_list->req_name, name, sizeof(req_list->req_name));

	pm_qos_add_request(&req_list->req, pm_qos_class, value);

	list_add(&req_list->list, &qtn_pm_req_list_head);
	return 0;
	}
	EXPORT_SYMBOL(pm_qos_add_requirement);

	int pm_qos_update_requirement(int pm_qos_class, const char *name, s32 new_value)
	{
	struct qtn_pm_req_list *req_list = NULL;

	if ((NULL == name) \|\| (pm_qos_class < PM_QOS_POWER_SAVE)
	\|\| (pm_qos_class > PM_QOS_POWER_EMAC)) {
	return -EINVAL;
	}

	printk("%s: name=%s, value=%d\n", __func__, name, new_value);

	list_for_each_entry(req_list, &qtn_pm_req_list_head, list) {
	if ((pm_qos_class == req_list->class_id)
	&& !strncmp(name, req_list->req_name, sizeof(req_list->req_name))) {
	pm_qos_update_request(&req_list->req, new_value);
	return 0;
	}
	}

	return 0;
	}
	EXPORT_SYMBOL(pm_qos_update_requirement);

	void pm_qos_remove_requirement(int pm_qos_class, const char *name)
	{
	struct qtn_pm_req_list *req_list = NULL;

	if ((NULL == name) \|\| (pm_qos_class < PM_QOS_POWER_SAVE)
	\|\| (pm_qos_class > PM_QOS_POWER_EMAC)) {
	return ;
	}

	list_for_each_entry(req_list, &qtn_pm_req_list_head, list) {
	if ((pm_qos_class == req_list->class_id)
	&& !strncmp(name, req_list->req_name, sizeof(req_list->req_name))) {
	break;
	}
	}
	pm_qos_remove_request(&req_list->req);
	list_del(&req_list->list);
	kfree(req_list);
	}
	EXPORT_SYMBOL(pm_qos_remove_requirement);

	int pm_qos_requirement(int pm_qos_class)
	{
	return pm_qos_request(pm_qos_class);
	}
	EXPORT_SYMBOL(pm_qos_requirement);
	#endif

	MODULE_AUTHOR("Quantenna");
	MODULE_LICENSE("GPL");