New bind/unbingd uevents

index f4783deef..0505a2730 100644
@@ -104,6 +104,8 @@ typedef enum DeviceAction {
         DEVICE_ACTION_MOVE,
         DEVICE_ACTION_ONLINE,
         DEVICE_ACTION_OFFLINE,
+        DEVICE_ACTION_BIND,
+        DEVICE_ACTION_UNBIND,
         _DEVICE_ACTION_MAX,
         _DEVICE_ACTION_INVALID = -1,
 } DeviceAction;

index b4cd676c1..8839c3266 100644
@@ -466,6 +466,8 @@ static const char* const device_action_table[_DEVICE_ACTION_MAX] = {
         [DEVICE_ACTION_MOVE] = "move",
         [DEVICE_ACTION_ONLINE] = "online",
         [DEVICE_ACTION_OFFLINE] = "offline",
+        [DEVICE_ACTION_BIND] = "bind",
+        [DEVICE_ACTION_UNBIND] = "unbind",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(device_action, DeviceAction);

index 4882f06d12df..c17fefc77345 100644
@@ -259,6 +259,8 @@ static void driver_bound(struct device *dev)
 	if (dev->bus)
 		blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
 					     BUS_NOTIFY_BOUND_DRIVER, dev);
+
+	kobject_uevent(&dev->kobj, KOBJ_BIND);
 }
 
 static int driver_sysfs_add(struct device *dev)

@@ -848,6 +850,8 @@ static void __device_release_driver(struct device *dev, struct device *parent)
 			blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
 						     BUS_NOTIFY_UNBOUND_DRIVER,
 						     dev);
+
+		kobject_uevent(&dev->kobj, KOBJ_UNBIND);
 	}
 }
 

index ca85cb80e99a..12f5ddccb97c 100644
@@ -57,6 +57,8 @@ enum kobject_action {
 	KOBJ_MOVE,
 	KOBJ_ONLINE,
 	KOBJ_OFFLINE,
+	KOBJ_BIND,
+	KOBJ_UNBIND,
 	KOBJ_MAX
 };
 

index 9a2b811966eb..4682e8545b5c 100644
@@ -50,6 +50,8 @@ static const char *kobject_actions[] = {
 	[KOBJ_MOVE] =		"move",
 	[KOBJ_ONLINE] =		"online",
 	[KOBJ_OFFLINE] =	"offline",
+	[KOBJ_BIND] =		"bind",
+	[KOBJ_UNBIND] =		"unbind",
 };
 
 /**

index ac2de0ed69ad..24fc205fcb9b 100644
@@ -13,6 +13,7 @@
 #include <linux/kobject.h>
 #include <linux/module.h>
 #include <linux/dcache.h>
+#include <linux/device.h>
 #include <linux/namei.h>
 #include <linux/err.h>
 #include "sysfs.h"

@@ -409,3 +410,126 @@ int __compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj,
 	return IS_ERR(link) ? PTR_ERR(link) : 0;
 }
 EXPORT_SYMBOL_GPL(__compat_only_sysfs_link_entry_to_kobj);
+
+struct sysfs_group_devres {
+	const struct attribute_group *group;
+};
+
+static int devm_sysfs_group_match(struct device *dev, void *res, void *data)
+{
+	return ((struct sysfs_group_devres *)res)->group == data;
+}
+
+static void devm_sysfs_group_remove_group(struct device *dev, void *res)
+{
+	struct sysfs_group_devres *devres = res;
+	const struct attribute_group *group = devres->group;
+
+	dev_dbg(dev, "%s: removing group %p\n", __func__, group);
+	sysfs_remove_group(&dev->kobj, group);
+}
+
+/**
+ * devm_sysfs_create_group - given a device, create a managed attribute group
+ * @dev:	The device to create the group for
+ * @grp:	The attribute group to create
+ *
+ * This function creates a group for the first time.  It will explicitly
+ * warn and error if any of the attribute files being created already exist.
+ *
+ * Returns 0 on success or error code on failure.
+ */
+int devm_sysfs_create_group(struct device *dev,
+			    const struct attribute_group *grp)
+{
+	struct sysfs_group_devres *devres;
+	int error;
+
+	devres = devres_alloc(devm_sysfs_group_remove_group,
+			      sizeof(*devres), GFP_KERNEL);
+	if (!devres)
+		return -ENOMEM;
+
+	error = sysfs_create_group(&dev->kobj, grp);
+	if (error) {
+		devres_free(devres);
+		return error;
+	}
+
+	devres_add(dev, devres);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_sysfs_create_group);
+
+/**
+ * devm_sysfs_create_groups - create a bunch of managed attribute groups
+ * @dev:	The device to create the group for
+ * @groups:	The attribute groups to create, NULL terminated
+ *
+ * This function creates a bunch of managed attribute groups.  If an error
+ * occurs when creating a group, all previously created groups will be
+ * removed, unwinding everything back to the original state when this
+ * function was called.  It will explicitly warn and error if any of the
+ * attribute files being created already exist.
+ *
+ * Returns 0 on success or error code from sysfs_create_group on failure.
+ */
+int devm_sysfs_create_groups(struct device *dev,
+			     const struct attribute_group **groups)
+{
+	int error;
+	int i;
+
+	if (!groups)
+		return 0;
+
+	for (i = 0; groups[i]; i++) {
+		error = devm_sysfs_create_group(dev, groups[i]);
+		if (error) {
+			while (--i >= 0)
+				devm_sysfs_remove_group(dev, groups[i]);
+			return error;
+		}
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_sysfs_create_groups);
+
+/**
+ * devm_sysfs_remove_group: remove a managed group from a device
+ * @dev:	device to remove the group from
+ * @grp:	group to remove
+ *
+ * This function removes a group of attributes from a device.  The attributes
+ * previously have to have been created for this group, otherwise it will fail.
+ */
+void devm_sysfs_remove_group(struct device *dev,
+			     const struct attribute_group *grp)
+{
+	WARN_ON(devres_release(dev, devm_sysfs_group_remove_group,
+			       devm_sysfs_group_match,
+			       /* cast away const */ (void *)grp));
+}
+EXPORT_SYMBOL_GPL(devm_sysfs_remove_group);
+
+/**
+ * devm_sysfs_remove_groups - remove a list of managed groups
+ *
+ * @dev:	The device for the groups to be removed from
+ * @groups:	NULL terminated list of groups to be removed
+ *
+ * If groups is not NULL, remove the specified groups from the device.
+ */
+void devm_sysfs_remove_groups(struct device *dev,
+			      const struct attribute_group **groups)
+{
+	int i;
+
+	if (!groups)
+		return;
+
+	for (i = 0; groups[i]; i++)
+		devm_sysfs_remove_group(dev, groups[i]);
+}
+EXPORT_SYMBOL_GPL(devm_sysfs_remove_groups);

index c6f0f0d0e17e..d9a5b8aab0e2 100644
@@ -282,6 +282,16 @@ int __compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj,
 				      struct kobject *target_kobj,
 				      const char *target_name);
 
+struct device;
+int __must_check devm_sysfs_create_group(struct device *dev,
+				const struct attribute_group *grp);
+int __must_check devm_sysfs_create_groups(struct device *dev,
+				const struct attribute_group **groups);
+void devm_sysfs_remove_group(struct device *dev,
+			     const struct attribute_group *grp);
+void devm_sysfs_remove_groups(struct device *dev,
+			      const struct attribute_group **groups);
+
 void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr);
 
 int __must_check sysfs_init(void);