12 files changed, 633 insertions, 274 deletions

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 12eec3f633b1..eb1b7fa20dce 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -945,8 +945,8 @@ bus_devices_fail:
 	bus_remove_file(bus, &bus_attr_uevent);
 bus_uevent_fail:
 	kset_unregister(&bus->p->subsys);
-	kfree(bus->p);
 out:
+	kfree(bus->p);
 	bus->p = NULL;
 	return retval;
 }
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 9b9d3bd54e3a..d1b2c9adc271 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1599,7 +1599,7 @@ EXPORT_SYMBOL_GPL(device_destroy);
  * on the same device to ensure that new_name is valid and
  * won't conflict with other devices.
  */
-int device_rename(struct device *dev, char *new_name)
+int device_rename(struct device *dev, const char *new_name)
 {
 	char *old_class_name = NULL;
 	char *new_class_name = NULL;
@@ -1819,3 +1819,67 @@ void device_shutdown(void)
 	spin_unlock(&devices_kset->list_lock);
 	async_synchronize_full();
 }
+
+/*
+ * Device logging functions
+ */
+
+#ifdef CONFIG_PRINTK
+
+static int __dev_printk(const char *level, const struct device *dev,
+			struct va_format *vaf)
+{
+	if (!dev)
+		return printk("%s(NULL device *): %pV", level, vaf);
+
+	return printk("%s%s %s: %pV",
+		      level, dev_driver_string(dev), dev_name(dev), vaf);
+}
+
+int dev_printk(const char *level, const struct device *dev,
+	       const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+	int r;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	r = __dev_printk(level, dev, &vaf);
+	va_end(args);
+
+	return r;
+}
+EXPORT_SYMBOL(dev_printk);
+
+#define define_dev_printk_level(func, kern_level)		\
+int func(const struct device *dev, const char *fmt, ...)	\
+{								\
+	struct va_format vaf;					\
+	va_list args;						\
+	int r;							\
+								\
+	va_start(args, fmt);					\
+								\
+	vaf.fmt = fmt;						\
+	vaf.va = &args;						\
+								\
+	r = __dev_printk(kern_level, dev, &vaf);		\
+	va_end(args);						\
+								\
+	return r;						\
+}								\
+EXPORT_SYMBOL(func);
+
+define_dev_printk_level(dev_emerg, KERN_EMERG);
+define_dev_printk_level(dev_alert, KERN_ALERT);
+define_dev_printk_level(dev_crit, KERN_CRIT);
+define_dev_printk_level(dev_err, KERN_ERR);
+define_dev_printk_level(dev_warn, KERN_WARNING);
+define_dev_printk_level(dev_notice, KERN_NOTICE);
+define_dev_printk_level(_dev_info, KERN_INFO);
+
+#endif
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 503c2620bbcc..da57ee9d63fe 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -51,6 +51,10 @@ static int driver_sysfs_add(struct device *dev)
 {
 	int ret;
 
+	if (dev->bus)
+		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
+					     BUS_NOTIFY_BIND_DRIVER, dev);
+
 	ret = sysfs_create_link(&dev->driver->p->kobj, &dev->kobj,
 			  kobject_name(&dev->kobj));
 	if (ret == 0) {
diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c
index d4d8ce53886a..f369e2795985 100644
--- a/drivers/base/dma-coherent.c
+++ b/drivers/base/dma-coherent.c
@@ -8,7 +8,7 @@
 
 struct dma_coherent_mem {
 	void		*virt_base;
-	u32		device_base;
+	dma_addr_t	device_base;
 	int		size;
 	int		flags;
 	unsigned long	*bitmap;
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 3f093b0dd217..c8a44f5e0584 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -87,29 +87,32 @@ static DEFINE_MUTEX(fw_lock);
 
 struct firmware_priv {
 	struct completion completion;
-	struct bin_attribute attr_data;
 	struct firmware *fw;
 	unsigned long status;
 	struct page **pages;
 	int nr_pages;
 	int page_array_size;
 	struct timer_list timeout;
+	struct device dev;
 	bool nowait;
 	char fw_id[];
 };
 
-static void
-fw_load_abort(struct firmware_priv *fw_priv)
+static struct firmware_priv *to_firmware_priv(struct device *dev)
+{
+	return container_of(dev, struct firmware_priv, dev);
+}
+
+static void fw_load_abort(struct firmware_priv *fw_priv)
 {
 	set_bit(FW_STATUS_ABORT, &fw_priv->status);
 	wmb();
 	complete(&fw_priv->completion);
 }
 
-static ssize_t
-firmware_timeout_show(struct class *class,
-		      struct class_attribute *attr,
-		      char *buf)
+static ssize_t firmware_timeout_show(struct class *class,
+				     struct class_attribute *attr,
+				     char *buf)
 {
 	return sprintf(buf, "%d\n", loading_timeout);
 }
@@ -127,14 +130,14 @@ firmware_timeout_show(struct class *class,
  *
  *	Note: zero means 'wait forever'.
  **/
-static ssize_t
-firmware_timeout_store(struct class *class,
-			struct class_attribute *attr,
-			const char *buf, size_t count)
+static ssize_t firmware_timeout_store(struct class *class,
+				      struct class_attribute *attr,
+				      const char *buf, size_t count)
 {
 	loading_timeout = simple_strtol(buf, NULL, 10);
 	if (loading_timeout < 0)
 		loading_timeout = 0;
+
 	return count;
 }
 
@@ -146,21 +149,20 @@ static struct class_attribute firmware_class_attrs[] = {
 
 static void fw_dev_release(struct device *dev)
 {
-	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
 	int i;
 
 	for (i = 0; i < fw_priv->nr_pages; i++)
 		__free_page(fw_priv->pages[i]);
 	kfree(fw_priv->pages);
 	kfree(fw_priv);
-	kfree(dev);
 
 	module_put(THIS_MODULE);
 }
 
 static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
-	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
 
 	if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->fw_id))
 		return -ENOMEM;
@@ -182,8 +184,9 @@ static struct class firmware_class = {
 static ssize_t firmware_loading_show(struct device *dev,
 				     struct device_attribute *attr, char *buf)
 {
-	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
 	int loading = test_bit(FW_STATUS_LOADING, &fw_priv->status);
+
 	return sprintf(buf, "%d\n", loading);
 }
 
@@ -219,7 +222,7 @@ static ssize_t firmware_loading_store(struct device *dev,
 				      struct device_attribute *attr,
 				      const char *buf, size_t count)
 {
-	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
 	int loading = simple_strtol(buf, NULL, 10);
 	int i;
 
@@ -277,13 +280,12 @@ static ssize_t firmware_loading_store(struct device *dev,
 
 static DEVICE_ATTR(loading, 0644, firmware_loading_show, firmware_loading_store);
 
-static ssize_t
-firmware_data_read(struct file *filp, struct kobject *kobj,
-		   struct bin_attribute *bin_attr, char *buffer, loff_t offset,
-		   size_t count)
+static ssize_t firmware_data_read(struct file *filp, struct kobject *kobj,
+				  struct bin_attribute *bin_attr,
+				  char *buffer, loff_t offset, size_t count)
 {
 	struct device *dev = to_dev(kobj);
-	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
 	struct firmware *fw;
 	ssize_t ret_count;
 
@@ -322,8 +324,7 @@ out:
 	return ret_count;
 }
 
-static int
-fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
+static int fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
 {
 	int pages_needed = ALIGN(min_size, PAGE_SIZE) >> PAGE_SHIFT;
 
@@ -373,13 +374,12 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
  *	Data written to the 'data' attribute will be later handed to
  *	the driver as a firmware image.
  **/
-static ssize_t
-firmware_data_write(struct file* filp, struct kobject *kobj,
-		    struct bin_attribute *bin_attr, char *buffer,
-		    loff_t offset, size_t count)
+static ssize_t firmware_data_write(struct file *filp, struct kobject *kobj,
+				   struct bin_attribute *bin_attr,
+				   char *buffer, loff_t offset, size_t count)
 {
 	struct device *dev = to_dev(kobj);
-	struct firmware_priv *fw_priv = dev_get_drvdata(dev);
+	struct firmware_priv *fw_priv = to_firmware_priv(dev);
 	struct firmware *fw;
 	ssize_t retval;
 
@@ -420,116 +420,103 @@ out:
 	return retval;
 }
 
-static struct bin_attribute firmware_attr_data_tmpl = {
-	.attr = {.name = "data", .mode = 0644},
+static struct bin_attribute firmware_attr_data = {
+	.attr = { .name = "data", .mode = 0644 },
 	.size = 0,
 	.read = firmware_data_read,
 	.write = firmware_data_write,
 };
 
-static void
-firmware_class_timeout(u_long data)
+static void firmware_class_timeout(u_long data)
 {
 	struct firmware_priv *fw_priv = (struct firmware_priv *) data;
+
 	fw_load_abort(fw_priv);
 }
 
-static int fw_register_device(struct device **dev_p, const char *fw_name,
-			      struct device *device)
+static struct firmware_priv *
+fw_create_instance(struct firmware *firmware, const char *fw_name,
+		   struct device *device, bool uevent, bool nowait)
 {
-	int retval;
-	struct firmware_priv *fw_priv =
-		kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
-	struct device *f_dev = kzalloc(sizeof(*f_dev), GFP_KERNEL);
-
-	*dev_p = NULL;
+	struct firmware_priv *fw_priv;
+	struct device *f_dev;
+	int error;
 
-	if (!fw_priv || !f_dev) {
+	fw_priv = kzalloc(sizeof(*fw_priv) + strlen(fw_name) + 1 , GFP_KERNEL);
+	if (!fw_priv) {
 		dev_err(device, "%s: kmalloc failed\n", __func__);
-		retval = -ENOMEM;
-		goto error_kfree;
+		error = -ENOMEM;
+		goto err_out;
 	}
 
+	fw_priv->fw = firmware;
+	fw_priv->nowait = nowait;
 	strcpy(fw_priv->fw_id, fw_name);
 	init_completion(&fw_priv->completion);
-	fw_priv->attr_data = firmware_attr_data_tmpl;
-	fw_priv->timeout.function = firmware_class_timeout;
-	fw_priv->timeout.data = (u_long) fw_priv;
-	init_timer(&fw_priv->timeout);
+	setup_timer(&fw_priv->timeout,
+		    firmware_class_timeout, (u_long) fw_priv);
 
+	f_dev = &fw_priv->dev;
+
+	device_initialize(f_dev);
 	dev_set_name(f_dev, "%s", dev_name(device));
 	f_dev->parent = device;
 	f_dev->class = &firmware_class;
-	dev_set_drvdata(f_dev, fw_priv);
-	dev_set_uevent_suppress(f_dev, 1);
-	retval = device_register(f_dev);
-	if (retval) {
-		dev_err(device, "%s: device_register failed\n", __func__);
-		put_device(f_dev);
-		return retval;
-	}
-	*dev_p = f_dev;
-	return 0;
-
-error_kfree:
-	kfree(f_dev);
-	kfree(fw_priv);
-	return retval;
-}
 
-static int fw_setup_device(struct firmware *fw, struct device **dev_p,
-			   const char *fw_name, struct device *device,
-			   int uevent, bool nowait)
-{
-	struct device *f_dev;
-	struct firmware_priv *fw_priv;
-	int retval;
-
-	*dev_p = NULL;
-	retval = fw_register_device(&f_dev, fw_name, device);
-	if (retval)
-		goto out;
+	dev_set_uevent_suppress(f_dev, true);
 
 	/* Need to pin this module until class device is destroyed */
 	__module_get(THIS_MODULE);
 
-	fw_priv = dev_get_drvdata(f_dev);
-
-	fw_priv->nowait = nowait;
+	error = device_add(f_dev);
+	if (error) {
+		dev_err(device, "%s: device_register failed\n", __func__);
+		goto err_put_dev;
+	}
 
-	fw_priv->fw = fw;
-	sysfs_bin_attr_init(&fw_priv->attr_data);
-	retval = sysfs_create_bin_file(&f_dev->kobj, &fw_priv->attr_data);
-	if (retval) {
+	error = device_create_bin_file(f_dev, &firmware_attr_data);
+	if (error) {
 		dev_err(device, "%s: sysfs_create_bin_file failed\n", __func__);
-		goto error_unreg;
+		goto err_del_dev;
 	}
 
-	retval = device_create_file(f_dev, &dev_attr_loading);
-	if (retval) {
+	error = device_create_file(f_dev, &dev_attr_loading);
+	if (error) {
 		dev_err(device, "%s: device_create_file failed\n", __func__);
-		goto error_unreg;
+		goto err_del_bin_attr;
 	}
 
 	if (uevent)
-		dev_set_uevent_suppress(f_dev, 0);
-	*dev_p = f_dev;
-	goto out;
+		dev_set_uevent_suppress(f_dev, false);
+
+	return fw_priv;
+
+err_del_bin_attr:
+	device_remove_bin_file(f_dev, &firmware_attr_data);
+err_del_dev:
+	device_del(f_dev);
+err_put_dev:
+	put_device(f_dev);
+err_out:
+	return ERR_PTR(error);
+}
+
+static void fw_destroy_instance(struct firmware_priv *fw_priv)
+{
+	struct device *f_dev = &fw_priv->dev;
 
-error_unreg:
+	device_remove_file(f_dev, &dev_attr_loading);
+	device_remove_bin_file(f_dev, &firmware_attr_data);
 	device_unregister(f_dev);
-out:
-	return retval;
 }
 
-static int
-_request_firmware(const struct firmware **firmware_p, const char *name,
-		 struct device *device, int uevent, bool nowait)
+static int _request_firmware(const struct firmware **firmware_p,
+			     const char *name, struct device *device,
+			     bool uevent, bool nowait)
 {
-	struct device *f_dev;
 	struct firmware_priv *fw_priv;
 	struct firmware *firmware;
-	int retval;
+	int retval = 0;
 
 	if (!firmware_p)
 		return -EINVAL;
@@ -550,41 +537,40 @@ _request_firmware(const struct firmware **firmware_p, const char *name,
 	if (uevent)
 		dev_dbg(device, "firmware: requesting %s\n", name);
 
-	retval = fw_setup_device(firmware, &f_dev, name, device,
-				 uevent, nowait);
-	if (retval)
-		goto error_kfree_fw;
-
-	fw_priv = dev_get_drvdata(f_dev);
+	fw_priv = fw_create_instance(firmware, name, device, uevent, nowait);
+	if (IS_ERR(fw_priv)) {
+		retval = PTR_ERR(fw_priv);
+		goto out;
+	}
 
 	if (uevent) {
-		if (loading_timeout > 0) {
-			fw_priv->timeout.expires = jiffies + loading_timeout * HZ;
-			add_timer(&fw_priv->timeout);
-		}
+		if (loading_timeout > 0)
+			mod_timer(&fw_priv->timeout,
+				  round_jiffies_up(jiffies +
+						   loading_timeout * HZ));
+
+		kobject_uevent(&fw_priv->dev.kobj, KOBJ_ADD);
+	}
+
+	wait_for_completion(&fw_priv->completion);
 
-		kobject_uevent(&f_dev->kobj, KOBJ_ADD);
-		wait_for_completion(&fw_priv->completion);
-		set_bit(FW_STATUS_DONE, &fw_priv->status);
-		del_timer_sync(&fw_priv->timeout);
-	} else
-		wait_for_completion(&fw_priv->completion);
+	set_bit(FW_STATUS_DONE, &fw_priv->status);
+	del_timer_sync(&fw_priv->timeout);
 
 	mutex_lock(&fw_lock);
-	if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status)) {
+	if (!fw_priv->fw->size || test_bit(FW_STATUS_ABORT, &fw_priv->status))
 		retval = -ENOENT;
-		release_firmware(fw_priv->fw);
-		*firmware_p = NULL;
-	}
 	fw_priv->fw = NULL;
 	mutex_unlock(&fw_lock);
-	device_unregister(f_dev);
-	goto out;
 
-error_kfree_fw:
-	kfree(firmware);
-	*firmware_p = NULL;
+	fw_destroy_instance(fw_priv);
+
 out:
+	if (retval) {
+		release_firmware(firmware);
+		firmware_p = NULL;
+	}
+
 	return retval;
 }
 
@@ -635,23 +621,24 @@ struct firmware_work {
 	int uevent;
 };
 
-static int
-request_firmware_work_func(void *arg)
+static int request_firmware_work_func(void *arg)
 {
 	struct firmware_work *fw_work = arg;
 	const struct firmware *fw;
 	int ret;
+
 	if (!arg) {
 		WARN_ON(1);
 		return 0;
 	}
-	ret = _request_firmware(&fw, fw_work->name, fw_work->device,
-		fw_work->uevent, true);
 
+	ret = _request_firmware(&fw, fw_work->name, fw_work->device,
+				fw_work->uevent, true);
 	fw_work->cont(fw, fw_work->context);
 
 	module_put(fw_work->module);
 	kfree(fw_work);
+
 	return ret;
 }
 
@@ -679,34 +666,33 @@ request_firmware_nowait(
 	void (*cont)(const struct firmware *fw, void *context))
 {
 	struct task_struct *task;
-	struct firmware_work *fw_work = kmalloc(sizeof (struct firmware_work),
-						gfp);
+	struct firmware_work *fw_work;
 
+	fw_work = kzalloc(sizeof (struct firmware_work), gfp);
 	if (!fw_work)
 		return -ENOMEM;
+
+	fw_work->module = module;
+	fw_work->name = name;
+	fw_work->device = device;
+	fw_work->context = context;
+	fw_work->cont = cont;
+	fw_work->uevent = uevent;
+
 	if (!try_module_get(module)) {
 		kfree(fw_work);
 		return -EFAULT;
 	}
 
-	*fw_work = (struct firmware_work) {
-		.module = module,
-		.name = name,
-		.device = device,
-		.context = context,
-		.cont = cont,
-		.uevent = uevent,
-	};
-
 	task = kthread_run(request_firmware_work_func, fw_work,
 			    "firmware/%s", name);
-
 	if (IS_ERR(task)) {
 		fw_work->cont(NULL, fw_work->context);
 		module_put(fw_work->module);
 		kfree(fw_work);
 		return PTR_ERR(task);
 	}
+
 	return 0;
 }
 
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 2bdd8a94ec94..2872e86837b2 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -66,8 +66,7 @@ static ssize_t node_read_meminfo(struct sys_device * dev,
 	struct sysinfo i;
 
 	si_meminfo_node(&i, nid);
-
-	n = sprintf(buf, "\n"
+	n = sprintf(buf,
 		       "Node %d MemTotal:       %8lu kB\n"
 		       "Node %d MemFree:        %8lu kB\n"
 		       "Node %d MemUsed:        %8lu kB\n"
@@ -78,13 +77,33 @@ static ssize_t node_read_meminfo(struct sys_device * dev,
 		       "Node %d Active(file):   %8lu kB\n"
 		       "Node %d Inactive(file): %8lu kB\n"
 		       "Node %d Unevictable:    %8lu kB\n"
-		       "Node %d Mlocked:        %8lu kB\n"
+		       "Node %d Mlocked:        %8lu kB\n",
+		       nid, K(i.totalram),
+		       nid, K(i.freeram),
+		       nid, K(i.totalram - i.freeram),
+		       nid, K(node_page_state(nid, NR_ACTIVE_ANON) +
+				node_page_state(nid, NR_ACTIVE_FILE)),
+		       nid, K(node_page_state(nid, NR_INACTIVE_ANON) +
+				node_page_state(nid, NR_INACTIVE_FILE)),
+		       nid, K(node_page_state(nid, NR_ACTIVE_ANON)),
+		       nid, K(node_page_state(nid, NR_INACTIVE_ANON)),
+		       nid, K(node_page_state(nid, NR_ACTIVE_FILE)),
+		       nid, K(node_page_state(nid, NR_INACTIVE_FILE)),
+		       nid, K(node_page_state(nid, NR_UNEVICTABLE)),
+		       nid, K(node_page_state(nid, NR_MLOCK)));
+
 #ifdef CONFIG_HIGHMEM
+	n += sprintf(buf + n,
 		       "Node %d HighTotal:      %8lu kB\n"
 		       "Node %d HighFree:       %8lu kB\n"
 		       "Node %d LowTotal:       %8lu kB\n"
-		       "Node %d LowFree:        %8lu kB\n"
+		       "Node %d LowFree:        %8lu kB\n",
+		       nid, K(i.totalhigh),
+		       nid, K(i.freehigh),
+		       nid, K(i.totalram - i.totalhigh),
+		       nid, K(i.freeram - i.freehigh));
 #endif
+	n += sprintf(buf + n,
 		       "Node %d Dirty:          %8lu kB\n"
 		       "Node %d Writeback:      %8lu kB\n"
 		       "Node %d FilePages:      %8lu kB\n"
@@ -99,25 +118,6 @@ static ssize_t node_read_meminfo(struct sys_device * dev,
 		       "Node %d Slab:           %8lu kB\n"
 		       "Node %d SReclaimable:   %8lu kB\n"
 		       "Node %d SUnreclaim:     %8lu kB\n",
-		       nid, K(i.totalram),
-		       nid, K(i.freeram),
-		       nid, K(i.totalram - i.freeram),
-		       nid, K(node_page_state(nid, NR_ACTIVE_ANON) +
-				node_page_state(nid, NR_ACTIVE_FILE)),
-		       nid, K(node_page_state(nid, NR_INACTIVE_ANON) +
-				node_page_state(nid, NR_INACTIVE_FILE)),
-		       nid, K(node_page_state(nid, NR_ACTIVE_ANON)),
-		       nid, K(node_page_state(nid, NR_INACTIVE_ANON)),
-		       nid, K(node_page_state(nid, NR_ACTIVE_FILE)),
-		       nid, K(node_page_state(nid, NR_INACTIVE_FILE)),
-		       nid, K(node_page_state(nid, NR_UNEVICTABLE)),
-		       nid, K(node_page_state(nid, NR_MLOCK)),
-#ifdef CONFIG_HIGHMEM
-		       nid, K(i.totalhigh),
-		       nid, K(i.freehigh),
-		       nid, K(i.totalram - i.totalhigh),
-		       nid, K(i.freeram - i.freehigh),
-#endif
 		       nid, K(node_page_state(nid, NR_FILE_DIRTY)),
 		       nid, K(node_page_state(nid, NR_WRITEBACK)),
 		       nid, K(node_page_state(nid, NR_FILE_PAGES)),
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 4d99c8bdfedc..c6c933f58102 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -12,6 +12,7 @@
 
 #include <linux/string.h>
 #include <linux/platform_device.h>
+#include <linux/of_device.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/dma-mapping.h>
@@ -191,13 +192,13 @@ int platform_device_add_resources(struct platform_device *pdev,
 {
 	struct resource *r;
 
-	r = kmalloc(sizeof(struct resource) * num, GFP_KERNEL);
+	r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL);
 	if (r) {
-		memcpy(r, res, sizeof(struct resource) * num);
 		pdev->resource = r;
 		pdev->num_resources = num;
+		return 0;
 	}
-	return r ? 0 : -ENOMEM;
+	return -ENOMEM;
 }
 EXPORT_SYMBOL_GPL(platform_device_add_resources);
 
@@ -344,108 +345,56 @@ void platform_device_unregister(struct platform_device *pdev)
 EXPORT_SYMBOL_GPL(platform_device_unregister);
 
 /**
- * platform_device_register_simple - add a platform-level device and its resources
- * @name: base name of the device we're adding
- * @id: instance id
- * @res: set of resources that needs to be allocated for the device
- * @num: number of resources
+ * platform_device_register_resndata - add a platform-level device with
+ * resources and platform-specific data
  *
- * This function creates a simple platform device that requires minimal
- * resource and memory management. Canned release function freeing memory
- * allocated for the device allows drivers using such devices to be
- * unloaded without waiting for the last reference to the device to be
- * dropped.
- *
- * This interface is primarily intended for use with legacy drivers which
- * probe hardware directly.  Because such drivers create sysfs device nodes
- * themselves, rather than letting system infrastructure handle such device
- * enumeration tasks, they don't fully conform to the Linux driver model.
- * In particular, when such drivers are built as modules, they can't be
- * "hotplugged".
- *
- * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
- */
-struct platform_device *platform_device_register_simple(const char *name,
-							int id,
-							const struct resource *res,
-							unsigned int num)
-{
-	struct platform_device *pdev;
-	int retval;
-
-	pdev = platform_device_alloc(name, id);
-	if (!pdev) {
-		retval = -ENOMEM;
-		goto error;
-	}
-
-	if (num) {
-		retval = platform_device_add_resources(pdev, res, num);
-		if (retval)
-			goto error;
-	}
-
-	retval = platform_device_add(pdev);
-	if (retval)
-		goto error;
-
-	return pdev;
-
-error:
-	platform_device_put(pdev);
-	return ERR_PTR(retval);
-}
-EXPORT_SYMBOL_GPL(platform_device_register_simple);
-
-/**
- * platform_device_register_data - add a platform-level device with platform-specific data
  * @parent: parent device for the device we're adding
  * @name: base name of the device we're adding
  * @id: instance id
+ * @res: set of resources that needs to be allocated for the device
+ * @num: number of resources
  * @data: platform specific data for this platform device
  * @size: size of platform specific data
  *
- * This function creates a simple platform device that requires minimal
- * resource and memory management. Canned release function freeing memory
- * allocated for the device allows drivers using such devices to be
- * unloaded without waiting for the last reference to the device to be
- * dropped.
- *
  * Returns &struct platform_device pointer on success, or ERR_PTR() on error.
  */
-struct platform_device *platform_device_register_data(
+struct platform_device *__init_or_module platform_device_register_resndata(
 		struct device *parent,
 		const char *name, int id,
+		const struct resource *res, unsigned int num,
 		const void *data, size_t size)
 {
+	int ret = -ENOMEM;
 	struct platform_device *pdev;
-	int retval;
 
 	pdev = platform_device_alloc(name, id);
-	if (!pdev) {
-		retval = -ENOMEM;
-		goto error;
-	}
+	if (!pdev)
+		goto err;
 
 	pdev->dev.parent = parent;
 
-	if (size) {
-		retval = platform_device_add_data(pdev, data, size);
-		if (retval)
-			goto error;
+	if (res) {
+		ret = platform_device_add_resources(pdev, res, num);
+		if (ret)
+			goto err;
 	}
 
-	retval = platform_device_add(pdev);
-	if (retval)
-		goto error;
+	if (data) {
+		ret = platform_device_add_data(pdev, data, size);
+		if (ret)
+			goto err;
+	}
 
-	return pdev;
+	ret = platform_device_add(pdev);
+	if (ret) {
+err:
+		platform_device_put(pdev);
+		return ERR_PTR(ret);
+	}
 
-error:
-	platform_device_put(pdev);
-	return ERR_PTR(retval);
+	return pdev;
 }
-EXPORT_SYMBOL_GPL(platform_device_register_data);
+EXPORT_SYMBOL_GPL(platform_device_register_resndata);
 
 static int platform_drv_probe(struct device *_dev)
 {
@@ -635,6 +584,12 @@ static struct device_attribute platform_dev_attrs[] = {
 static int platform_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
 	struct platform_device	*pdev = to_platform_device(dev);
+	int rc;
+
+	/* Some devices have extra OF data and an OF-style MODALIAS */
+	rc = of_device_uevent(dev,env);
+	if (rc != -ENODEV)
+		return rc;
 
 	add_uevent_var(env, "MODALIAS=%s%s", PLATFORM_MODULE_PREFIX,
 		(pdev->id_entry) ? pdev->id_entry->name : pdev->name);
@@ -673,7 +628,11 @@ static int platform_match(struct device *dev, struct device_driver *drv)
 	struct platform_device *pdev = to_platform_device(dev);
 	struct platform_driver *pdrv = to_platform_driver(drv);
 
-	/* match against the id table first */
+	/* Attempt an OF style match first */
+	if (of_driver_match_device(dev, drv))
+		return 1;
+
+	/* Then try to match against the id table */
 	if (pdrv->id_table)
 		return platform_match_id(pdrv->id_table, pdev) != NULL;
 
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index 89de75325cea..cbccf9a3cee4 100644
--- a/drivers/base/power/Makefile
+++ b/drivers/base/power/Makefile
@@ -1,5 +1,5 @@
 obj-$(CONFIG_PM)	+= sysfs.o
-obj-$(CONFIG_PM_SLEEP)	+= main.o
+obj-$(CONFIG_PM_SLEEP)	+= main.o wakeup.o
 obj-$(CONFIG_PM_RUNTIME)	+= runtime.o
 obj-$(CONFIG_PM_OPS)	+= generic_ops.o
 obj-$(CONFIG_PM_TRACE_RTC)	+= trace.o
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 941fcb87e52a..5419a49ff135 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -59,6 +59,7 @@ void device_pm_init(struct device *dev)
 {
 	dev->power.status = DPM_ON;
 	init_completion(&dev->power.completion);
+	dev->power.wakeup_count = 0;
 	pm_runtime_init(dev);
 }
 
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index b0ec0e9f27e9..b78c401ffa73 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -123,6 +123,45 @@ int pm_runtime_idle(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(pm_runtime_idle);
 
+
+/**
+ * update_pm_runtime_accounting - Update the time accounting of power states
+ * @dev: Device to update the accounting for
+ *
+ * In order to be able to have time accounting of the various power states
+ * (as used by programs such as PowerTOP to show the effectiveness of runtime
+ * PM), we need to track the time spent in each state.
+ * update_pm_runtime_accounting must be called each time before the
+ * runtime_status field is updated, to account the time in the old state
+ * correctly.
+ */
+void update_pm_runtime_accounting(struct device *dev)
+{
+	unsigned long now = jiffies;
+	int delta;
+
+	delta = now - dev->power.accounting_timestamp;
+
+	if (delta < 0)
+		delta = 0;
+
+	dev->power.accounting_timestamp = now;
+
+	if (dev->power.disable_depth > 0)
+		return;
+
+	if (dev->power.runtime_status == RPM_SUSPENDED)
+		dev->power.suspended_jiffies += delta;
+	else
+		dev->power.active_jiffies += delta;
+}
+
+static void __update_runtime_status(struct device *dev, enum rpm_status status)
+{
+	update_pm_runtime_accounting(dev);
+	dev->power.runtime_status = status;
+}
+
 /**
  * __pm_runtime_suspend - Carry out run-time suspend of given device.
  * @dev: Device to suspend.
@@ -197,7 +236,7 @@ int __pm_runtime_suspend(struct device *dev, bool from_wq)
 		goto repeat;
 	}
 
-	dev->power.runtime_status = RPM_SUSPENDING;
+	__update_runtime_status(dev, RPM_SUSPENDING);
 	dev->power.deferred_resume = false;
 
 	if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_suspend) {
@@ -228,7 +267,7 @@ int __pm_runtime_suspend(struct device *dev, bool from_wq)
 	}
 
 	if (retval) {
-		dev->power.runtime_status = RPM_ACTIVE;
+		__update_runtime_status(dev, RPM_ACTIVE);
 		if (retval == -EAGAIN || retval == -EBUSY) {
 			if (dev->power.timer_expires == 0)
 				notify = true;
@@ -237,7 +276,7 @@ int __pm_runtime_suspend(struct device *dev, bool from_wq)
 			pm_runtime_cancel_pending(dev);
 		}
 	} else {
-		dev->power.runtime_status = RPM_SUSPENDED;
+		__update_runtime_status(dev, RPM_SUSPENDED);
 		pm_runtime_deactivate_timer(dev);
 
 		if (dev->parent) {
@@ -381,7 +420,7 @@ int __pm_runtime_resume(struct device *dev, bool from_wq)
 		goto repeat;
 	}
 
-	dev->power.runtime_status = RPM_RESUMING;
+	__update_runtime_status(dev, RPM_RESUMING);
 
 	if (dev->bus && dev->bus->pm && dev->bus->pm->runtime_resume) {
 		spin_unlock_irq(&dev->power.lock);
@@ -411,10 +450,10 @@ int __pm_runtime_resume(struct device *dev, bool from_wq)
 	}
 
 	if (retval) {
-		dev->power.runtime_status = RPM_SUSPENDED;
+		__update_runtime_status(dev, RPM_SUSPENDED);
 		pm_runtime_cancel_pending(dev);
 	} else {
-		dev->power.runtime_status = RPM_ACTIVE;
+		__update_runtime_status(dev, RPM_ACTIVE);
 		if (parent)
 			atomic_inc(&parent->power.child_count);
 	}
@@ -848,7 +887,7 @@ int __pm_runtime_set_status(struct device *dev, unsigned int status)
 	}
 
  out_set:
-	dev->power.runtime_status = status;
+	__update_runtime_status(dev, status);
 	dev->power.runtime_error = 0;
  out:
 	spin_unlock_irqrestore(&dev->power.lock, flags);
@@ -1077,6 +1116,7 @@ void pm_runtime_init(struct device *dev)
 	dev->power.request_pending = false;
 	dev->power.request = RPM_REQ_NONE;
 	dev->power.deferred_resume = false;
+	dev->power.accounting_timestamp = jiffies;
 	INIT_WORK(&dev->power.work, pm_runtime_work);
 
 	dev->power.timer_expires = 0;
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index a4c33bc51257..e56b4388fe61 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -6,6 +6,7 @@
 #include <linux/string.h>
 #include <linux/pm_runtime.h>
 #include <asm/atomic.h>
+#include <linux/jiffies.h>
 #include "power.h"
 
 /*
@@ -73,6 +74,8 @@
  *	device are known to the PM core.  However, for some devices this
  *	attribute is set to "enabled" by bus type code or device drivers and in
  *	that cases it should be safe to leave the default value.
+ *
+ *	wakeup_count - Report the number of wakeup events related to the device
  */
 
 static const char enabled[] = "enabled";
@@ -108,6 +111,65 @@ static ssize_t control_store(struct device * dev, struct device_attribute *attr,
 }
 
 static DEVICE_ATTR(control, 0644, control_show, control_store);
+
+static ssize_t rtpm_active_time_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	int ret;
+	spin_lock_irq(&dev->power.lock);
+	update_pm_runtime_accounting(dev);
+	ret = sprintf(buf, "%i\n", jiffies_to_msecs(dev->power.active_jiffies));
+	spin_unlock_irq(&dev->power.lock);
+	return ret;
+}
+
+static DEVICE_ATTR(runtime_active_time, 0444, rtpm_active_time_show, NULL);
+
+static ssize_t rtpm_suspended_time_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	int ret;
+	spin_lock_irq(&dev->power.lock);
+	update_pm_runtime_accounting(dev);
+	ret = sprintf(buf, "%i\n",
+		jiffies_to_msecs(dev->power.suspended_jiffies));
+	spin_unlock_irq(&dev->power.lock);
+	return ret;
+}
+
+static DEVICE_ATTR(runtime_suspended_time, 0444, rtpm_suspended_time_show, NULL);
+
+static ssize_t rtpm_status_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	const char *p;
+
+	if (dev->power.runtime_error) {
+		p = "error\n";
+	} else if (dev->power.disable_depth) {
+		p = "unsupported\n";
+	} else {
+		switch (dev->power.runtime_status) {
+		case RPM_SUSPENDED:
+			p = "suspended\n";
+			break;
+		case RPM_SUSPENDING:
+			p = "suspending\n";
+			break;
+		case RPM_RESUMING:
+			p = "resuming\n";
+			break;
+		case RPM_ACTIVE:
+			p = "active\n";
+			break;
+		default:
+			return -EIO;
+		}
+	}
+	return sprintf(buf, p);
+}
+
+static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL);
 #endif
 
 static ssize_t
@@ -144,6 +206,16 @@ wake_store(struct device * dev, struct device_attribute *attr,
 
 static DEVICE_ATTR(wakeup, 0644, wake_show, wake_store);
 
+#ifdef CONFIG_PM_SLEEP
+static ssize_t wakeup_count_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	return sprintf(buf, "%lu\n", dev->power.wakeup_count);
+}
+
+static DEVICE_ATTR(wakeup_count, 0444, wakeup_count_show, NULL);
+#endif
+
 #ifdef CONFIG_PM_ADVANCED_DEBUG
 #ifdef CONFIG_PM_RUNTIME
 
@@ -172,27 +244,8 @@ static ssize_t rtpm_enabled_show(struct device *dev,
 	return sprintf(buf, "enabled\n");
 }
 
-static ssize_t rtpm_status_show(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	if (dev->power.runtime_error)
-		return sprintf(buf, "error\n");
-	switch (dev->power.runtime_status) {
-	case RPM_SUSPENDED:
-		return sprintf(buf, "suspended\n");
-	case RPM_SUSPENDING:
-		return sprintf(buf, "suspending\n");
-	case RPM_RESUMING:
-		return sprintf(buf, "resuming\n");
-	case RPM_ACTIVE:
-		return sprintf(buf, "active\n");
-	}
-	return -EIO;
-}
-
 static DEVICE_ATTR(runtime_usage, 0444, rtpm_usagecount_show, NULL);
 static DEVICE_ATTR(runtime_active_kids, 0444, rtpm_children_show, NULL);
-static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL);
 static DEVICE_ATTR(runtime_enabled, 0444, rtpm_enabled_show, NULL);
 
 #endif
@@ -228,14 +281,19 @@ static DEVICE_ATTR(async, 0644, async_show, async_store);
 static struct attribute * power_attrs[] = {
 #ifdef CONFIG_PM_RUNTIME
 	&dev_attr_control.attr,
+	&dev_attr_runtime_status.attr,
+	&dev_attr_runtime_suspended_time.attr,
+	&dev_attr_runtime_active_time.attr,
 #endif
 	&dev_attr_wakeup.attr,
+#ifdef CONFIG_PM_SLEEP
+	&dev_attr_wakeup_count.attr,
+#endif
 #ifdef CONFIG_PM_ADVANCED_DEBUG
 	&dev_attr_async.attr,
 #ifdef CONFIG_PM_RUNTIME
 	&dev_attr_runtime_usage.attr,
 	&dev_attr_runtime_active_kids.attr,
-	&dev_attr_runtime_status.attr,
 	&dev_attr_runtime_enabled.attr,
 #endif
 #endif
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
new file mode 100644
index 000000000000..eb594facfc3f
--- /dev/null
+++ b/drivers/base/power/wakeup.c
@@ -0,0 +1,247 @@
+/*
+ * drivers/base/power/wakeup.c - System wakeup events framework
+ *
+ * Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
+ *
+ * This file is released under the GPLv2.
+ */
+
+#include <linux/device.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/capability.h>
+#include <linux/suspend.h>
+#include <linux/pm.h>
+
+/*
+ * If set, the suspend/hibernate code will abort transitions to a sleep state
+ * if wakeup events are registered during or immediately before the transition.
+ */
+bool events_check_enabled;
+
+/* The counter of registered wakeup events. */
+static unsigned long event_count;
+/* A preserved old value of event_count. */
+static unsigned long saved_event_count;
+/* The counter of wakeup events being processed. */
+static unsigned long events_in_progress;
+
+static DEFINE_SPINLOCK(events_lock);
+
+static void pm_wakeup_timer_fn(unsigned long data);
+
+static DEFINE_TIMER(events_timer, pm_wakeup_timer_fn, 0, 0);
+static unsigned long events_timer_expires;
+
+/*
+ * The functions below use the observation that each wakeup event starts a
+ * period in which the system should not be suspended.  The moment this period
+ * will end depends on how the wakeup event is going to be processed after being
+ * detected and all of the possible cases can be divided into two distinct
+ * groups.
+ *
+ * First, a wakeup event may be detected by the same functional unit that will
+ * carry out the entire processing of it and possibly will pass it to user space
+ * for further processing.  In that case the functional unit that has detected
+ * the event may later "close" the "no suspend" period associated with it
+ * directly as soon as it has been dealt with.  The pair of pm_stay_awake() and
+ * pm_relax(), balanced with each other, is supposed to be used in such
+ * situations.
+ *
+ * Second, a wakeup event may be detected by one functional unit and processed
+ * by another one.  In that case the unit that has detected it cannot really
+ * "close" the "no suspend" period associated with it, unless it knows in
+ * advance what's going to happen to the event during processing.  This
+ * knowledge, however, may not be available to it, so it can simply specify time
+ * to wait before the system can be suspended and pass it as the second
+ * argument of pm_wakeup_event().
+ */
+
+/**
+ * pm_stay_awake - Notify the PM core that a wakeup event is being processed.
+ * @dev: Device the wakeup event is related to.
+ *
+ * Notify the PM core of a wakeup event (signaled by @dev) by incrementing the
+ * counter of wakeup events being processed.  If @dev is not NULL, the counter
+ * of wakeup events related to @dev is incremented too.
+ *
+ * Call this function after detecting of a wakeup event if pm_relax() is going
+ * to be called directly after processing the event (and possibly passing it to
+ * user space for further processing).
+ *
+ * It is safe to call this function from interrupt context.
+ */
+void pm_stay_awake(struct device *dev)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&events_lock, flags);
+	if (dev)
+		dev->power.wakeup_count++;
+
+	events_in_progress++;
+	spin_unlock_irqrestore(&events_lock, flags);
+}
+
+/**
+ * pm_relax - Notify the PM core that processing of a wakeup event has ended.
+ *
+ * Notify the PM core that a wakeup event has been processed by decrementing
+ * the counter of wakeup events being processed and incrementing the counter
+ * of registered wakeup events.
+ *
+ * Call this function for wakeup events whose processing started with calling
+ * pm_stay_awake().
+ *
+ * It is safe to call it from interrupt context.
+ */
+void pm_relax(void)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&events_lock, flags);
+	if (events_in_progress) {
+		events_in_progress--;
+		event_count++;
+	}
+	spin_unlock_irqrestore(&events_lock, flags);
+}
+
+/**
+ * pm_wakeup_timer_fn - Delayed finalization of a wakeup event.
+ *
+ * Decrease the counter of wakeup events being processed after it was increased
+ * by pm_wakeup_event().
+ */
+static void pm_wakeup_timer_fn(unsigned long data)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&events_lock, flags);
+	if (events_timer_expires
+	    && time_before_eq(events_timer_expires, jiffies)) {
+		events_in_progress--;
+		events_timer_expires = 0;
+	}
+	spin_unlock_irqrestore(&events_lock, flags);
+}
+
+/**
+ * pm_wakeup_event - Notify the PM core of a wakeup event.
+ * @dev: Device the wakeup event is related to.
+ * @msec: Anticipated event processing time (in milliseconds).
+ *
+ * Notify the PM core of a wakeup event (signaled by @dev) that will take
+ * approximately @msec milliseconds to be processed by the kernel.  Increment
+ * the counter of registered wakeup events and (if @msec is nonzero) set up
+ * the wakeup events timer to execute pm_wakeup_timer_fn() in future (if the
+ * timer has not been set up already, increment the counter of wakeup events
+ * being processed).  If @dev is not NULL, the counter of wakeup events related
+ * to @dev is incremented too.
+ *
+ * It is safe to call this function from interrupt context.
+ */
+void pm_wakeup_event(struct device *dev, unsigned int msec)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&events_lock, flags);
+	event_count++;
+	if (dev)
+		dev->power.wakeup_count++;
+
+	if (msec) {
+		unsigned long expires;
+
+		expires = jiffies + msecs_to_jiffies(msec);
+		if (!expires)
+			expires = 1;
+
+		if (!events_timer_expires
+		    || time_after(expires, events_timer_expires)) {
+			if (!events_timer_expires)
+				events_in_progress++;
+
+			mod_timer(&events_timer, expires);
+			events_timer_expires = expires;
+		}
+	}
+	spin_unlock_irqrestore(&events_lock, flags);
+}
+
+/**
+ * pm_check_wakeup_events - Check for new wakeup events.
+ *
+ * Compare the current number of registered wakeup events with its preserved
+ * value from the past to check if new wakeup events have been registered since
+ * the old value was stored.  Check if the current number of wakeup events being
+ * processed is zero.
+ */
+bool pm_check_wakeup_events(void)
+{
+	unsigned long flags;
+	bool ret = true;
+
+	spin_lock_irqsave(&events_lock, flags);
+	if (events_check_enabled) {
+		ret = (event_count == saved_event_count) && !events_in_progress;
+		events_check_enabled = ret;
+	}
+	spin_unlock_irqrestore(&events_lock, flags);
+	return ret;
+}
+
+/**
+ * pm_get_wakeup_count - Read the number of registered wakeup events.
+ * @count: Address to store the value at.
+ *
+ * Store the number of registered wakeup events at the address in @count.  Block
+ * if the current number of wakeup events being processed is nonzero.
+ *
+ * Return false if the wait for the number of wakeup events being processed to
+ * drop down to zero has been interrupted by a signal (and the current number
+ * of wakeup events being processed is still nonzero).  Otherwise return true.
+ */
+bool pm_get_wakeup_count(unsigned long *count)
+{
+	bool ret;
+
+	spin_lock_irq(&events_lock);
+	if (capable(CAP_SYS_ADMIN))
+		events_check_enabled = false;
+
+	while (events_in_progress && !signal_pending(current)) {
+		spin_unlock_irq(&events_lock);
+
+		schedule_timeout_interruptible(msecs_to_jiffies(100));
+
+		spin_lock_irq(&events_lock);
+	}
+	*count = event_count;
+	ret = !events_in_progress;
+	spin_unlock_irq(&events_lock);
+	return ret;
+}
+
+/**
+ * pm_save_wakeup_count - Save the current number of registered wakeup events.
+ * @count: Value to compare with the current number of registered wakeup events.
+ *
+ * If @count is equal to the current number of registered wakeup events and the
+ * current number of wakeup events being processed is zero, store @count as the
+ * old number of registered wakeup events to be used by pm_check_wakeup_events()
+ * and return true.  Otherwise return false.
+ */
+bool pm_save_wakeup_count(unsigned long count)
+{
+	bool ret = false;
+
+	spin_lock_irq(&events_lock);
+	if (count == event_count && !events_in_progress) {
+		saved_event_count = count;
+		events_check_enabled = true;
+		ret = true;
+	}
+	spin_unlock_irq(&events_lock);
+	return ret;
+}