diff --git a/drivers/base/base.h b/drivers/base/base.h
index 251c5d3..24836f1 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -43,11 +43,17 @@ struct subsys_private {
 };
 #define to_subsys_private(obj) container_of(obj, struct subsys_private, subsys.kobj)
 
+struct driver_attach_work {
+	struct work_struct work;
+	struct device_driver *driver;
+};
+
 struct driver_private {
 	struct kobject kobj;
 	struct klist klist_devices;
 	struct klist_node knode_bus;
 	struct module_kobject *mkobj;
+	struct driver_attach_work *attach_work;
 	struct device_driver *driver;
 };
 #define to_driver(obj) container_of(obj, struct driver_private, kobj)
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index a5f41e4..70d51b2 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -85,6 +85,7 @@ static void driver_release(struct kobject *kobj)
 	struct driver_private *drv_priv = to_driver(kobj);
 
 	pr_debug("driver: '%s': %s\n", kobject_name(kobj), __func__);
+	kfree(drv_priv->attach_work);
 	kfree(drv_priv);
 }
 
@@ -662,10 +663,56 @@ static void remove_driver_private(struct device_driver *drv)
 	struct driver_private *priv = drv->p;
 
 	kobject_put(&priv->kobj);
+	kfree(priv->attach_work);
 	kfree(priv);
 	drv->p = NULL;
 }
 
+static void driver_attach_workfn(struct work_struct *work)
+{
+	int ret;
+	struct driver_attach_work *attach_work =
+		container_of(work, struct driver_attach_work, work);
+	struct device_driver *drv = attach_work->driver;
+	ktime_t calltime, delta, rettime;
+	unsigned long long duration;
+
+	calltime = ktime_get();
+
+	ret = driver_attach(drv);
+	if (ret != 0) {
+		remove_driver_private(drv);
+		bus_put(drv->bus);
+	}
+
+	rettime = ktime_get();
+	delta = ktime_sub(rettime, calltime);
+	duration = (unsigned long long) ktime_to_ns(delta) >> 10;
+
+	pr_debug("bus: '%s': add driver %s attach completed after %lld usecs\n",
+		 drv->bus->name, drv->name, duration);
+}
+
+int bus_driver_async_probe(struct device_driver *drv)
+{
+	struct driver_private *priv = drv->p;
+
+	priv->attach_work = kzalloc(sizeof(struct driver_attach_work),
+				    GFP_KERNEL);
+	if (!priv->attach_work)
+		return -ENOMEM;
+
+	priv->attach_work->driver = drv;
+	INIT_WORK(&priv->attach_work->work, driver_attach_workfn);
+
+	pr_debug("bus: '%s': probe for driver %s is run asynchronously\n",
+		 drv->bus->name, drv->name);
+
+	queue_work(system_unbound_wq, &priv->attach_work->work);
+
+	return 0;
+}
+
 /**
  * bus_add_driver - Add a driver to the bus.
  * @drv: driver.
@@ -698,9 +745,15 @@ int bus_add_driver(struct device_driver *drv)
 
 	klist_add_tail(&priv->knode_bus, &bus->p->klist_drivers);
 	if (drv->bus->p->drivers_autoprobe) {
-		error = driver_attach(drv);
-		if (error)
-			goto out_unregister;
+		if (drv->owner && drv->async_probe) {
+			error = bus_driver_async_probe(drv);
+			if (error)
+				goto out_unregister;
+		} else {
+			error = driver_attach(drv);
+			if (error)
+				goto out_unregister;
+		}
 	}
 	module_add_driver(drv->owner, drv);
 
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index e4ffbcf..f1565f3 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -507,6 +507,10 @@ static void __device_release_driver(struct device *dev)
 
 	drv = dev->driver;
 	if (drv) {
+		if (drv->owner && drv->async_probe) {
+			struct driver_private *priv = drv->p;
+			flush_work(&priv->attach_work->work);
+		}
 		pm_runtime_get_sync(dev);
 
 		driver_sysfs_remove(dev);
diff --git a/include/linux/device.h b/include/linux/device.h
index 43d183a..7de1386b 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -200,6 +200,10 @@ extern struct klist *bus_get_device_klist(struct bus_type *bus);
  * @owner:	The module owner.
  * @mod_name:	Used for built-in modules.
  * @suppress_bind_attrs: Disables bind/unbind via sysfs.
+ * @async_probe: requests probe to be run asynchronously. Drivers that
+ * 	have this enabled must take care that userspace will return
+ * 	immediately upon driver loading as probing will happen behind the
+ * 	schenes asynchronously.
  * @of_match_table: The open firmware table.
  * @acpi_match_table: The ACPI match table.
  * @probe:	Called to query the existence of a specific device,
@@ -233,6 +237,7 @@ struct device_driver {
 	const char		*mod_name;	/* used for built-in modules */
 
 	bool suppress_bind_attrs;	/* disables bind/unbind via sysfs */
+	bool async_probe;
 
 	const struct of_device_id	*of_match_table;
 	const struct acpi_device_id	*acpi_match_table;
