diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig
index ad92594..97a819c 100644
--- a/drivers/usb/core/Kconfig
+++ b/drivers/usb/core/Kconfig
@@ -91,8 +91,8 @@
 	  If you are unsure about this, say N here.
 
 config USB_SUSPEND
-	bool "USB selective suspend/resume and wakeup"
-	depends on USB && PM
+	bool "USB runtime power management (suspend/resume and wakeup)"
+	depends on USB && PM_RUNTIME
 	help
 	  If you say Y here, you can use driver calls or the sysfs
 	  "power/level" file to suspend or resume individual USB
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 638d546..6850ec6 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -25,7 +25,7 @@
 #include <linux/device.h>
 #include <linux/usb.h>
 #include <linux/usb/quirks.h>
-#include <linux/workqueue.h>
+#include <linux/pm_runtime.h>
 #include "hcd.h"
 #include "usb.h"
 
@@ -221,7 +221,7 @@
 {
 	struct usb_device_driver *udriver = to_usb_device_driver(dev->driver);
 	struct usb_device *udev = to_usb_device(dev);
-	int error = -ENODEV;
+	int error = 0;
 
 	dev_dbg(dev, "%s\n", __func__);
 
@@ -230,18 +230,23 @@
 	/* The device should always appear to be in use
 	 * unless the driver suports autosuspend.
 	 */
-	udev->pm_usage_cnt = !(udriver->supports_autosuspend);
+	if (!udriver->supports_autosuspend)
+		error = usb_autoresume_device(udev);
 
-	error = udriver->probe(udev);
+	if (!error)
+		error = udriver->probe(udev);
 	return error;
 }
 
 /* called from driver core with dev locked */
 static int usb_unbind_device(struct device *dev)
 {
+	struct usb_device *udev = to_usb_device(dev);
 	struct usb_device_driver *udriver = to_usb_device_driver(dev->driver);
 
-	udriver->disconnect(to_usb_device(dev));
+	udriver->disconnect(udev);
+	if (!udriver->supports_autosuspend)
+		usb_autosuspend_device(udev);
 	return 0;
 }
 
@@ -293,17 +298,16 @@
 	if (error)
 		return error;
 
-	/* Interface "power state" doesn't correspond to any hardware
-	 * state whatsoever.  We use it to record when it's bound to
-	 * a driver that may start I/0:  it's not frozen/quiesced.
-	 */
-	mark_active(intf);
 	intf->condition = USB_INTERFACE_BINDING;
 
-	/* The interface should always appear to be in use
-	 * unless the driver suports autosuspend.
+	/* Bound interfaces are initially active.  They are
+	 * runtime-PM-enabled only if the driver has autosuspend support.
+	 * They are sensitive to their children's power states.
 	 */
-	atomic_set(&intf->pm_usage_cnt, !driver->supports_autosuspend);
+	pm_runtime_set_active(dev);
+	pm_suspend_ignore_children(dev, false);
+	if (driver->supports_autosuspend)
+		pm_runtime_enable(dev);
 
 	/* Carry out a deferred switch to altsetting 0 */
 	if (intf->needs_altsetting0) {
@@ -323,10 +327,14 @@
 	return error;
 
  err:
-	mark_quiesced(intf);
 	intf->needs_remote_wakeup = 0;
 	intf->condition = USB_INTERFACE_UNBOUND;
 	usb_cancel_queued_reset(intf);
+
+	/* Unbound interfaces are always runtime-PM-disabled and -suspended */
+	pm_runtime_disable(dev);
+	pm_runtime_set_suspended(dev);
+
 	usb_autosuspend_device(udev);
 	return error;
 }
@@ -376,9 +384,17 @@
 	usb_set_intfdata(intf, NULL);
 
 	intf->condition = USB_INTERFACE_UNBOUND;
-	mark_quiesced(intf);
 	intf->needs_remote_wakeup = 0;
 
+	/* Unbound interfaces are always runtime-PM-disabled and -suspended */
+	pm_runtime_disable(dev);
+	pm_runtime_set_suspended(dev);
+
+	/* Undo any residual pm_autopm_get_interface_* calls */
+	for (r = atomic_read(&intf->pm_usage_cnt); r > 0; --r)
+		usb_autopm_put_interface_no_suspend(intf);
+	atomic_set(&intf->pm_usage_cnt, 0);
+
 	if (!error)
 		usb_autosuspend_device(udev);
 
@@ -409,7 +425,6 @@
 				struct usb_interface *iface, void *priv)
 {
 	struct device *dev = &iface->dev;
-	struct usb_device *udev = interface_to_usbdev(iface);
 	int retval = 0;
 
 	if (dev->driver)
@@ -419,11 +434,16 @@
 	usb_set_intfdata(iface, priv);
 	iface->needs_binding = 0;
 
-	usb_pm_lock(udev);
 	iface->condition = USB_INTERFACE_BOUND;
-	mark_active(iface);
-	atomic_set(&iface->pm_usage_cnt, !driver->supports_autosuspend);
-	usb_pm_unlock(udev);
+
+	/* Bound interfaces are initially active.  They are
+	 * runtime-PM-enabled only if the driver has autosuspend support.
+	 * They are sensitive to their children's power states.
+	 */
+	pm_runtime_set_active(dev);
+	pm_suspend_ignore_children(dev, false);
+	if (driver->supports_autosuspend)
+		pm_runtime_enable(dev);
 
 	/* if interface was already added, bind now; else let
 	 * the future device_add() bind it, bypassing probe()
@@ -982,7 +1002,6 @@
 	}
 }
 
-/* Caller has locked udev's pm_mutex */
 static int usb_suspend_device(struct usb_device *udev, pm_message_t msg)
 {
 	struct usb_device_driver	*udriver;
@@ -1006,7 +1025,6 @@
 	return status;
 }
 
-/* Caller has locked udev's pm_mutex */
 static int usb_resume_device(struct usb_device *udev, pm_message_t msg)
 {
 	struct usb_device_driver	*udriver;
@@ -1040,27 +1058,20 @@
 	return status;
 }
 
-/* Caller has locked intf's usb_device's pm mutex */
 static int usb_suspend_interface(struct usb_device *udev,
 		struct usb_interface *intf, pm_message_t msg)
 {
 	struct usb_driver	*driver;
 	int			status = 0;
 
-	/* with no hardware, USB interfaces only use FREEZE and ON states */
-	if (udev->state == USB_STATE_NOTATTACHED || !is_active(intf))
-		goto done;
-
-	/* This can happen; see usb_driver_release_interface() */
-	if (intf->condition == USB_INTERFACE_UNBOUND)
+	if (udev->state == USB_STATE_NOTATTACHED ||
+			intf->condition == USB_INTERFACE_UNBOUND)
 		goto done;
 	driver = to_usb_driver(intf->dev.driver);
 
 	if (driver->suspend) {
 		status = driver->suspend(intf, msg);
-		if (status == 0)
-			mark_quiesced(intf);
-		else if (!(msg.event & PM_EVENT_AUTO))
+		if (status && !(msg.event & PM_EVENT_AUTO))
 			dev_err(&intf->dev, "%s error %d\n",
 					"suspend", status);
 	} else {
@@ -1068,7 +1079,6 @@
 		intf->needs_binding = 1;
 		dev_warn(&intf->dev, "no %s for driver %s?\n",
 				"suspend", driver->name);
-		mark_quiesced(intf);
 	}
 
  done:
@@ -1076,14 +1086,13 @@
 	return status;
 }
 
-/* Caller has locked intf's usb_device's pm_mutex */
 static int usb_resume_interface(struct usb_device *udev,
 		struct usb_interface *intf, pm_message_t msg, int reset_resume)
 {
 	struct usb_driver	*driver;
 	int			status = 0;
 
-	if (udev->state == USB_STATE_NOTATTACHED || is_active(intf))
+	if (udev->state == USB_STATE_NOTATTACHED)
 		goto done;
 
 	/* Don't let autoresume interfere with unbinding */
@@ -1134,90 +1143,11 @@
 
 done:
 	dev_vdbg(&intf->dev, "%s: status %d\n", __func__, status);
-	if (status == 0 && intf->condition == USB_INTERFACE_BOUND)
-		mark_active(intf);
 
 	/* Later we will unbind the driver and/or reprobe, if necessary */
 	return status;
 }
 
-#ifdef	CONFIG_USB_SUSPEND
-
-/* Internal routine to check whether we may autosuspend a device. */
-static int autosuspend_check(struct usb_device *udev, int reschedule)
-{
-	int			i;
-	struct usb_interface	*intf;
-	unsigned long		suspend_time, j;
-
-	/* For autosuspend, fail fast if anything is in use or autosuspend
-	 * is disabled.  Also fail if any interfaces require remote wakeup
-	 * but it isn't available.
-	 */
-	if (udev->pm_usage_cnt > 0)
-		return -EBUSY;
-	if (udev->autosuspend_delay < 0 || udev->autosuspend_disabled)
-		return -EPERM;
-
-	suspend_time = udev->last_busy + udev->autosuspend_delay;
-	if (udev->actconfig) {
-		for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
-			intf = udev->actconfig->interface[i];
-			if (!is_active(intf))
-				continue;
-			if (atomic_read(&intf->pm_usage_cnt) > 0)
-				return -EBUSY;
-			if (intf->needs_remote_wakeup &&
-					!udev->do_remote_wakeup) {
-				dev_dbg(&udev->dev, "remote wakeup needed "
-						"for autosuspend\n");
-				return -EOPNOTSUPP;
-			}
-
-			/* Don't allow autosuspend if the device will need
-			 * a reset-resume and any of its interface drivers
-			 * doesn't include support.
-			 */
-			if (udev->quirks & USB_QUIRK_RESET_RESUME) {
-				struct usb_driver *driver;
-
-				driver = to_usb_driver(intf->dev.driver);
-				if (!driver->reset_resume ||
-				    intf->needs_remote_wakeup)
-					return -EOPNOTSUPP;
-			}
-		}
-	}
-
-	/* If everything is okay but the device hasn't been idle for long
-	 * enough, queue a delayed autosuspend request.  If the device
-	 * _has_ been idle for long enough and the reschedule flag is set,
-	 * likewise queue a delayed (1 second) autosuspend request.
-	 */
-	j = jiffies;
-	if (time_before(j, suspend_time))
-		reschedule = 1;
-	else
-		suspend_time = j + HZ;
-	if (reschedule) {
-		if (!timer_pending(&udev->autosuspend.timer)) {
-			queue_delayed_work(ksuspend_usb_wq, &udev->autosuspend,
-				round_jiffies_up_relative(suspend_time - j));
-		}
-		return -EAGAIN;
-	}
-	return 0;
-}
-
-#else
-
-static inline int autosuspend_check(struct usb_device *udev, int reschedule)
-{
-	return 0;
-}
-
-#endif	/* CONFIG_USB_SUSPEND */
-
 /**
  * usb_suspend_both - suspend a USB device and its interfaces
  * @udev: the usb_device to suspend
@@ -1229,27 +1159,12 @@
  * all the interfaces which were suspended are resumed so that they remain
  * in the same state as the device.
  *
- * If an autosuspend is in progress the routine checks first to make sure
- * that neither the device itself or any of its active interfaces is in use
- * (pm_usage_cnt is greater than 0).  If they are, the autosuspend fails.
- *
- * If the suspend succeeds, the routine recursively queues an autosuspend
- * request for @udev's parent device, thereby propagating the change up
- * the device tree.  If all of the parent's children are now suspended,
- * the parent will autosuspend in turn.
- *
- * The suspend method calls are subject to mutual exclusion under control
- * of @udev's pm_mutex.  Many of these calls are also under the protection
- * of @udev's device lock (including all requests originating outside the
- * USB subsystem), but autosuspend requests generated by a child device or
- * interface driver may not be.  Usbcore will insure that the method calls
- * do not arrive during bind, unbind, or reset operations.  However, drivers
- * must be prepared to handle suspend calls arriving at unpredictable times.
- * The only way to block such calls is to do an autoresume (preventing
- * autosuspends) while holding @udev's device lock (preventing outside
- * suspends).
- *
- * The caller must hold @udev->pm_mutex.
+ * Autosuspend requests originating from a child device or an interface
+ * driver may be made without the protection of @udev's device lock, but
+ * all other suspend calls will hold the lock.  Usbcore will insure that
+ * method calls do not arrive during bind, unbind, or reset operations.
+ * However drivers must be prepared to handle suspend calls arriving at
+ * unpredictable times.
  *
  * This routine can run only in process context.
  */
@@ -1258,20 +1173,11 @@
 	int			status = 0;
 	int			i = 0;
 	struct usb_interface	*intf;
-	struct usb_device	*parent = udev->parent;
 
 	if (udev->state == USB_STATE_NOTATTACHED ||
 			udev->state == USB_STATE_SUSPENDED)
 		goto done;
 
-	udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
-
-	if (msg.event & PM_EVENT_AUTO) {
-		status = autosuspend_check(udev, 0);
-		if (status < 0)
-			goto done;
-	}
-
 	/* Suspend all the interfaces and then udev itself */
 	if (udev->actconfig) {
 		for (; i < udev->actconfig->desc.bNumInterfaces; i++) {
@@ -1286,35 +1192,21 @@
 
 	/* If the suspend failed, resume interfaces that did get suspended */
 	if (status != 0) {
-		pm_message_t msg2;
-
-		msg2.event = msg.event ^ (PM_EVENT_SUSPEND | PM_EVENT_RESUME);
+		msg.event ^= (PM_EVENT_SUSPEND | PM_EVENT_RESUME);
 		while (--i >= 0) {
 			intf = udev->actconfig->interface[i];
-			usb_resume_interface(udev, intf, msg2, 0);
+			usb_resume_interface(udev, intf, msg, 0);
 		}
 
-		/* Try another autosuspend when the interfaces aren't busy */
-		if (msg.event & PM_EVENT_AUTO)
-			autosuspend_check(udev, status == -EBUSY);
-
-	/* If the suspend succeeded then prevent any more URB submissions,
-	 * flush any outstanding URBs, and propagate the suspend up the tree.
+	/* If the suspend succeeded then prevent any more URB submissions
+	 * and flush any outstanding URBs.
 	 */
 	} else {
-		cancel_delayed_work(&udev->autosuspend);
 		udev->can_submit = 0;
 		for (i = 0; i < 16; ++i) {
 			usb_hcd_flush_endpoint(udev, udev->ep_out[i]);
 			usb_hcd_flush_endpoint(udev, udev->ep_in[i]);
 		}
-
-		/* If this is just a FREEZE or a PRETHAW, udev might
-		 * not really be suspended.  Only true suspends get
-		 * propagated up the device tree.
-		 */
-		if (parent && udev->state == USB_STATE_SUSPENDED)
-			usb_autosuspend_device(parent);
 	}
 
  done:
@@ -1331,23 +1223,12 @@
  * the resume method for @udev and then calls the resume methods for all
  * the interface drivers in @udev.
  *
- * Before starting the resume, the routine calls itself recursively for
- * the parent device of @udev, thereby propagating the change up the device
- * tree and assuring that @udev will be able to resume.  If the parent is
- * unable to resume successfully, the routine fails.
- *
- * The resume method calls are subject to mutual exclusion under control
- * of @udev's pm_mutex.  Many of these calls are also under the protection
- * of @udev's device lock (including all requests originating outside the
- * USB subsystem), but autoresume requests generated by a child device or
- * interface driver may not be.  Usbcore will insure that the method calls
- * do not arrive during bind, unbind, or reset operations.  However, drivers
- * must be prepared to handle resume calls arriving at unpredictable times.
- * The only way to block such calls is to do an autoresume (preventing
- * other autoresumes) while holding @udev's device lock (preventing outside
- * resumes).
- *
- * The caller must hold @udev->pm_mutex.
+ * Autoresume requests originating from a child device or an interface
+ * driver may be made without the protection of @udev's device lock, but
+ * all other resume calls will hold the lock.  Usbcore will insure that
+ * method calls do not arrive during bind, unbind, or reset operations.
+ * However drivers must be prepared to handle resume calls arriving at
+ * unpredictable times.
  *
  * This routine can run only in process context.
  */
@@ -1356,48 +1237,18 @@
 	int			status = 0;
 	int			i;
 	struct usb_interface	*intf;
-	struct usb_device	*parent = udev->parent;
 
-	cancel_delayed_work(&udev->autosuspend);
 	if (udev->state == USB_STATE_NOTATTACHED) {
 		status = -ENODEV;
 		goto done;
 	}
 	udev->can_submit = 1;
 
-	/* Propagate the resume up the tree, if necessary */
-	if (udev->state == USB_STATE_SUSPENDED) {
-		if (parent) {
-			status = usb_autoresume_device(parent);
-			if (status == 0) {
-				status = usb_resume_device(udev, msg);
-				if (status || udev->state ==
-						USB_STATE_NOTATTACHED) {
-					usb_autosuspend_device(parent);
-
-					/* It's possible usb_resume_device()
-					 * failed after the port was
-					 * unsuspended, causing udev to be
-					 * logically disconnected.  We don't
-					 * want usb_disconnect() to autosuspend
-					 * the parent again, so tell it that
-					 * udev disconnected while still
-					 * suspended. */
-					if (udev->state ==
-							USB_STATE_NOTATTACHED)
-						udev->discon_suspended = 1;
-				}
-			}
-		} else {
-
-			/* We can't progagate beyond the USB subsystem,
-			 * so if a root hub's controller is suspended
-			 * then we're stuck. */
-			status = usb_resume_device(udev, msg);
-		}
-	} else if (udev->reset_resume)
+	/* Resume the device */
+	if (udev->state == USB_STATE_SUSPENDED || udev->reset_resume)
 		status = usb_resume_device(udev, msg);
 
+	/* Resume the interfaces */
 	if (status == 0 && udev->actconfig) {
 		for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
 			intf = udev->actconfig->interface[i];
@@ -1413,104 +1264,46 @@
 	return status;
 }
 
-/**
- * usb_external_suspend_device - external suspend of a USB device and its interfaces
- * @udev: the usb_device to suspend
- * @msg: Power Management message describing this state transition
- *
- * This routine handles external suspend requests: ones not generated
- * internally by a USB driver (autosuspend) but rather coming from the user
- * (via sysfs) or the PM core (system sleep).  The suspend will be carried
- * out regardless of @udev's usage counter or those of its interfaces,
- * and regardless of whether or not remote wakeup is enabled.  Of course,
- * interface drivers still have the option of failing the suspend (if
- * there are unsuspended children, for example).
- *
- * The caller must hold @udev's device lock.
- */
-int usb_external_suspend_device(struct usb_device *udev, pm_message_t msg)
-{
-	int	status;
-
-	do_unbind_rebind(udev, DO_UNBIND);
-	usb_pm_lock(udev);
-	status = usb_suspend_both(udev, msg);
-	usb_pm_unlock(udev);
-	return status;
-}
-
-/**
- * usb_external_resume_device - external resume of a USB device and its interfaces
- * @udev: the usb_device to resume
- * @msg: Power Management message describing this state transition
- *
- * This routine handles external resume requests: ones not generated
- * internally by a USB driver (autoresume) but rather coming from the user
- * (via sysfs), the PM core (system resume), or the device itself (remote
- * wakeup).  @udev's usage counter is unaffected.
- *
- * The caller must hold @udev's device lock.
- */
-int usb_external_resume_device(struct usb_device *udev, pm_message_t msg)
-{
-	int	status;
-
-	usb_pm_lock(udev);
-	status = usb_resume_both(udev, msg);
-	udev->last_busy = jiffies;
-	usb_pm_unlock(udev);
-	if (status == 0)
-		do_unbind_rebind(udev, DO_REBIND);
-
-	/* Now that the device is awake, we can start trying to autosuspend
-	 * it again. */
-	if (status == 0)
-		usb_try_autosuspend_device(udev);
-	return status;
-}
-
+/* The device lock is held by the PM core */
 int usb_suspend(struct device *dev, pm_message_t msg)
 {
-	struct usb_device	*udev;
+	struct usb_device	*udev = to_usb_device(dev);
 
-	udev = to_usb_device(dev);
-
-	/* If udev is already suspended, we can skip this suspend and
-	 * we should also skip the upcoming system resume.  High-speed
-	 * root hubs are an exception; they need to resume whenever the
-	 * system wakes up in order for USB-PERSIST port handover to work
-	 * properly.
-	 */
-	if (udev->state == USB_STATE_SUSPENDED) {
-		if (udev->parent || udev->speed != USB_SPEED_HIGH)
-			udev->skip_sys_resume = 1;
-		return 0;
-	}
-
-	udev->skip_sys_resume = 0;
-	return usb_external_suspend_device(udev, msg);
+	do_unbind_rebind(udev, DO_UNBIND);
+	udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
+	return usb_suspend_both(udev, msg);
 }
 
+/* The device lock is held by the PM core */
 int usb_resume(struct device *dev, pm_message_t msg)
 {
-	struct usb_device	*udev;
+	struct usb_device	*udev = to_usb_device(dev);
 	int			status;
 
-	udev = to_usb_device(dev);
+	/* For PM complete calls, all we do is rebind interfaces */
+	if (msg.event == PM_EVENT_ON) {
+		if (udev->state != USB_STATE_NOTATTACHED)
+			do_unbind_rebind(udev, DO_REBIND);
+		status = 0;
 
-	/* If udev->skip_sys_resume is set then udev was already suspended
-	 * when the system sleep started, so we don't want to resume it
-	 * during this system wakeup.
+	/* For all other calls, take the device back to full power and
+	 * tell the PM core in case it was autosuspended previously.
 	 */
-	if (udev->skip_sys_resume)
-		return 0;
-	status = usb_external_resume_device(udev, msg);
+	} else {
+		status = usb_resume_both(udev, msg);
+		if (status == 0) {
+			pm_runtime_disable(dev);
+			pm_runtime_set_active(dev);
+			pm_runtime_enable(dev);
+			udev->last_busy = jiffies;
+		}
+	}
 
 	/* Avoid PM error messages for devices disconnected while suspended
 	 * as we'll display regular disconnect messages just a bit later.
 	 */
 	if (status == -ENODEV)
-		return 0;
+		status = 0;
 	return status;
 }
 
@@ -1560,54 +1353,6 @@
 }
 EXPORT_SYMBOL_GPL(usb_disable_autosuspend);
 
-/* Internal routine to adjust a device's usage counter and change
- * its autosuspend state.
- */
-static int usb_autopm_do_device(struct usb_device *udev, int inc_usage_cnt)
-{
-	int	status = 0;
-
-	usb_pm_lock(udev);
-	udev->pm_usage_cnt += inc_usage_cnt;
-	WARN_ON(udev->pm_usage_cnt < 0);
-	if (inc_usage_cnt)
-		udev->last_busy = jiffies;
-	if (inc_usage_cnt >= 0 && udev->pm_usage_cnt > 0) {
-		if (udev->state == USB_STATE_SUSPENDED)
-			status = usb_resume_both(udev, PMSG_AUTO_RESUME);
-		if (status != 0)
-			udev->pm_usage_cnt -= inc_usage_cnt;
-		else if (inc_usage_cnt)
-			udev->last_busy = jiffies;
-	} else if (inc_usage_cnt <= 0 && udev->pm_usage_cnt <= 0) {
-		status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND);
-	}
-	usb_pm_unlock(udev);
-	return status;
-}
-
-/* usb_autosuspend_work - callback routine to autosuspend a USB device */
-void usb_autosuspend_work(struct work_struct *work)
-{
-	struct usb_device *udev =
-		container_of(work, struct usb_device, autosuspend.work);
-
-	usb_autopm_do_device(udev, 0);
-}
-
-/* usb_autoresume_work - callback routine to autoresume a USB device */
-void usb_autoresume_work(struct work_struct *work)
-{
-	struct usb_device *udev =
-		container_of(work, struct usb_device, autoresume);
-
-	/* Wake it up, let the drivers do their thing, and then put it
-	 * back to sleep.
-	 */
-	if (usb_autopm_do_device(udev, 1) == 0)
-		usb_autopm_do_device(udev, -1);
-}
-
 /**
  * usb_autosuspend_device - delayed autosuspend of a USB device and its interfaces
  * @udev: the usb_device to autosuspend
@@ -1616,12 +1361,9 @@
  * @udev and wants to allow it to autosuspend.  Examples would be when
  * @udev's device file in usbfs is closed or after a configuration change.
  *
- * @udev's usage counter is decremented.  If it or any of the usage counters
- * for an active interface is greater than 0, no autosuspend request will be
- * queued.  (If an interface driver does not support autosuspend then its
- * usage counter is permanently positive.)  Furthermore, if an interface
- * driver requires remote-wakeup capability during autosuspend but remote
- * wakeup is disabled, the autosuspend will fail.
+ * @udev's usage counter is decremented; if it drops to 0 and all the
+ * interfaces are inactive then a delayed autosuspend will be attempted.
+ * The attempt may fail (see autosuspend_check()).
  *
  * The caller must hold @udev's device lock.
  *
@@ -1631,9 +1373,11 @@
 {
 	int	status;
 
-	status = usb_autopm_do_device(udev, -1);
-	dev_vdbg(&udev->dev, "%s: cnt %d\n",
-			__func__, udev->pm_usage_cnt);
+	udev->last_busy = jiffies;
+	status = pm_runtime_put_sync(&udev->dev);
+	dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&udev->dev.power.usage_count),
+			status);
 }
 
 /**
@@ -1643,9 +1387,9 @@
  * This routine should be called when a core subsystem thinks @udev may
  * be ready to autosuspend.
  *
- * @udev's usage counter left unchanged.  If it or any of the usage counters
- * for an active interface is greater than 0, or autosuspend is not allowed
- * for any other reason, no autosuspend request will be queued.
+ * @udev's usage counter left unchanged.  If it is 0 and all the interfaces
+ * are inactive then an autosuspend will be attempted.  The attempt may
+ * fail or be delayed.
  *
  * The caller must hold @udev's device lock.
  *
@@ -1653,9 +1397,12 @@
  */
 void usb_try_autosuspend_device(struct usb_device *udev)
 {
-	usb_autopm_do_device(udev, 0);
-	dev_vdbg(&udev->dev, "%s: cnt %d\n",
-			__func__, udev->pm_usage_cnt);
+	int	status;
+
+	status = pm_runtime_idle(&udev->dev);
+	dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&udev->dev.power.usage_count),
+			status);
 }
 
 /**
@@ -1664,9 +1411,9 @@
  *
  * This routine should be called when a core subsystem wants to use @udev
  * and needs to guarantee that it is not suspended.  No autosuspend will
- * occur until usb_autosuspend_device is called.  (Note that this will not
- * prevent suspend events originating in the PM core.)  Examples would be
- * when @udev's device file in usbfs is opened or when a remote-wakeup
+ * occur until usb_autosuspend_device() is called.  (Note that this will
+ * not prevent suspend events originating in the PM core.)  Examples would
+ * be when @udev's device file in usbfs is opened or when a remote-wakeup
  * request is received.
  *
  * @udev's usage counter is incremented to prevent subsequent autosuspends.
@@ -1680,42 +1427,14 @@
 {
 	int	status;
 
-	status = usb_autopm_do_device(udev, 1);
-	dev_vdbg(&udev->dev, "%s: status %d cnt %d\n",
-			__func__, status, udev->pm_usage_cnt);
-	return status;
-}
-
-/* Internal routine to adjust an interface's usage counter and change
- * its device's autosuspend state.
- */
-static int usb_autopm_do_interface(struct usb_interface *intf,
-		int inc_usage_cnt)
-{
-	struct usb_device	*udev = interface_to_usbdev(intf);
-	int			status = 0;
-
-	usb_pm_lock(udev);
-	if (intf->condition == USB_INTERFACE_UNBOUND)
-		status = -ENODEV;
-	else {
-		atomic_add(inc_usage_cnt, &intf->pm_usage_cnt);
-		udev->last_busy = jiffies;
-		if (inc_usage_cnt >= 0 &&
-				atomic_read(&intf->pm_usage_cnt) > 0) {
-			if (udev->state == USB_STATE_SUSPENDED)
-				status = usb_resume_both(udev,
-						PMSG_AUTO_RESUME);
-			if (status != 0)
-				atomic_sub(inc_usage_cnt, &intf->pm_usage_cnt);
-			else
-				udev->last_busy = jiffies;
-		} else if (inc_usage_cnt <= 0 &&
-				atomic_read(&intf->pm_usage_cnt) <= 0) {
-			status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND);
-		}
-	}
-	usb_pm_unlock(udev);
+	status = pm_runtime_get_sync(&udev->dev);
+	if (status < 0)
+		pm_runtime_put_sync(&udev->dev);
+	dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&udev->dev.power.usage_count),
+			status);
+	if (status > 0)
+		status = 0;
 	return status;
 }
 
@@ -1729,34 +1448,25 @@
  * closed.
  *
  * The routine decrements @intf's usage counter.  When the counter reaches
- * 0, a delayed autosuspend request for @intf's device is queued.  When
- * the delay expires, if @intf->pm_usage_cnt is still <= 0 along with all
- * the other usage counters for the sibling interfaces and @intf's
- * usb_device, the device and all its interfaces will be autosuspended.
- *
- * Note that @intf->pm_usage_cnt is owned by the interface driver.  The
- * core will not change its value other than the increment and decrement
- * in usb_autopm_get_interface and usb_autopm_put_interface.  The driver
- * may use this simple counter-oriented discipline or may set the value
- * any way it likes.
+ * 0, a delayed autosuspend request for @intf's device is attempted.  The
+ * attempt may fail (see autosuspend_check()).
  *
  * If the driver has set @intf->needs_remote_wakeup then autosuspend will
  * take place only if the device's remote-wakeup facility is enabled.
  *
- * Suspend method calls queued by this routine can arrive at any time
- * while @intf is resumed and its usage counter is equal to 0.  They are
- * not protected by the usb_device's lock but only by its pm_mutex.
- * Drivers must provide their own synchronization.
- *
  * This routine can run only in process context.
  */
 void usb_autopm_put_interface(struct usb_interface *intf)
 {
-	int	status;
+	struct usb_device	*udev = interface_to_usbdev(intf);
+	int			status;
 
-	status = usb_autopm_do_interface(intf, -1);
-	dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
-			__func__, status, atomic_read(&intf->pm_usage_cnt));
+	udev->last_busy = jiffies;
+	atomic_dec(&intf->pm_usage_cnt);
+	status = pm_runtime_put_sync(&intf->dev);
+	dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&intf->dev.power.usage_count),
+			status);
 }
 EXPORT_SYMBOL_GPL(usb_autopm_put_interface);
 
@@ -1764,11 +1474,11 @@
  * usb_autopm_put_interface_async - decrement a USB interface's PM-usage counter
  * @intf: the usb_interface whose counter should be decremented
  *
- * This routine does essentially the same thing as
- * usb_autopm_put_interface(): it decrements @intf's usage counter and
- * queues a delayed autosuspend request if the counter is <= 0.  The
- * difference is that it does not acquire the device's pm_mutex;
- * callers must handle all synchronization issues themselves.
+ * This routine does much the same thing as usb_autopm_put_interface():
+ * It decrements @intf's usage counter and schedules a delayed
+ * autosuspend request if the counter is <= 0.  The difference is that it
+ * does not perform any synchronization; callers should hold a private
+ * lock and handle all synchronization issues themselves.
  *
  * Typically a driver would call this routine during an URB's completion
  * handler, if no more URBs were pending.
@@ -1778,28 +1488,58 @@
 void usb_autopm_put_interface_async(struct usb_interface *intf)
 {
 	struct usb_device	*udev = interface_to_usbdev(intf);
+	unsigned long		last_busy;
 	int			status = 0;
 
-	if (intf->condition == USB_INTERFACE_UNBOUND) {
-		status = -ENODEV;
-	} else {
-		udev->last_busy = jiffies;
-		atomic_dec(&intf->pm_usage_cnt);
-		if (udev->autosuspend_disabled || udev->autosuspend_delay < 0)
-			status = -EPERM;
-		else if (atomic_read(&intf->pm_usage_cnt) <= 0 &&
-				!timer_pending(&udev->autosuspend.timer)) {
-			queue_delayed_work(ksuspend_usb_wq, &udev->autosuspend,
+	last_busy = udev->last_busy;
+	udev->last_busy = jiffies;
+	atomic_dec(&intf->pm_usage_cnt);
+	pm_runtime_put_noidle(&intf->dev);
+
+	if (!udev->autosuspend_disabled) {
+		/* Optimization: Don't schedule a delayed autosuspend if
+		 * the timer is already running and the expiration time
+		 * wouldn't change.
+		 *
+		 * We have to use the interface's timer.  Attempts to
+		 * schedule a suspend for the device would fail because
+		 * the interface is still active.
+		 */
+		if (intf->dev.power.timer_expires == 0 ||
+				round_jiffies_up(last_busy) !=
+				round_jiffies_up(jiffies)) {
+			status = pm_schedule_suspend(&intf->dev,
+					jiffies_to_msecs(
 					round_jiffies_up_relative(
-						udev->autosuspend_delay));
+						udev->autosuspend_delay)));
 		}
 	}
-	dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
-			__func__, status, atomic_read(&intf->pm_usage_cnt));
+	dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&intf->dev.power.usage_count),
+			status);
 }
 EXPORT_SYMBOL_GPL(usb_autopm_put_interface_async);
 
 /**
+ * usb_autopm_put_interface_no_suspend - decrement a USB interface's PM-usage counter
+ * @intf: the usb_interface whose counter should be decremented
+ *
+ * This routine decrements @intf's usage counter but does not carry out an
+ * autosuspend.
+ *
+ * This routine can run in atomic context.
+ */
+void usb_autopm_put_interface_no_suspend(struct usb_interface *intf)
+{
+	struct usb_device	*udev = interface_to_usbdev(intf);
+
+	udev->last_busy = jiffies;
+	atomic_dec(&intf->pm_usage_cnt);
+	pm_runtime_put_noidle(&intf->dev);
+}
+EXPORT_SYMBOL_GPL(usb_autopm_put_interface_no_suspend);
+
+/**
  * usb_autopm_get_interface - increment a USB interface's PM-usage counter
  * @intf: the usb_interface whose counter should be incremented
  *
@@ -1811,25 +1551,8 @@
  * or @intf is unbound.  A typical example would be a character-device
  * driver when its device file is opened.
  *
- *
- * The routine increments @intf's usage counter.  (However if the
- * autoresume fails then the counter is re-decremented.)  So long as the
- * counter is greater than 0, autosuspend will not be allowed for @intf
- * or its usb_device.  When the driver is finished using @intf it should
- * call usb_autopm_put_interface() to decrement the usage counter and
- * queue a delayed autosuspend request (if the counter is <= 0).
- *
- *
- * Note that @intf->pm_usage_cnt is owned by the interface driver.  The
- * core will not change its value other than the increment and decrement
- * in usb_autopm_get_interface and usb_autopm_put_interface.  The driver
- * may use this simple counter-oriented discipline or may set the value
- * any way it likes.
- *
- * Resume method calls generated by this routine can arrive at any time
- * while @intf is suspended.  They are not protected by the usb_device's
- * lock but only by its pm_mutex.  Drivers must provide their own
- * synchronization.
+ * @intf's usage counter is incremented to prevent subsequent autosuspends.
+ * However if the autoresume fails then the counter is re-decremented.
  *
  * This routine can run only in process context.
  */
@@ -1837,9 +1560,16 @@
 {
 	int	status;
 
-	status = usb_autopm_do_interface(intf, 1);
-	dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
-			__func__, status, atomic_read(&intf->pm_usage_cnt));
+	status = pm_runtime_get_sync(&intf->dev);
+	if (status < 0)
+		pm_runtime_put_sync(&intf->dev);
+	else
+		atomic_inc(&intf->pm_usage_cnt);
+	dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&intf->dev.power.usage_count),
+			status);
+	if (status > 0)
+		status = 0;
 	return status;
 }
 EXPORT_SYMBOL_GPL(usb_autopm_get_interface);
@@ -1849,41 +1579,201 @@
  * @intf: the usb_interface whose counter should be incremented
  *
  * This routine does much the same thing as
- * usb_autopm_get_interface(): it increments @intf's usage counter and
- * queues an autoresume request if the result is > 0.  The differences
- * are that it does not acquire the device's pm_mutex (callers must
- * handle all synchronization issues themselves), and it does not
- * autoresume the device directly (it only queues a request).  After a
- * successful call, the device will generally not yet be resumed.
+ * usb_autopm_get_interface(): It increments @intf's usage counter and
+ * queues an autoresume request if the device is suspended.  The
+ * differences are that it does not perform any synchronization (callers
+ * should hold a private lock and handle all synchronization issues
+ * themselves), and it does not autoresume the device directly (it only
+ * queues a request).  After a successful call, the device may not yet be
+ * resumed.
  *
  * This routine can run in atomic context.
  */
 int usb_autopm_get_interface_async(struct usb_interface *intf)
 {
-	struct usb_device	*udev = interface_to_usbdev(intf);
-	int			status = 0;
+	int		status = 0;
+	enum rpm_status	s;
 
-	if (intf->condition == USB_INTERFACE_UNBOUND)
-		status = -ENODEV;
-	else {
+	/* Don't request a resume unless the interface is already suspending
+	 * or suspended.  Doing so would force a running suspend timer to be
+	 * cancelled.
+	 */
+	pm_runtime_get_noresume(&intf->dev);
+	s = ACCESS_ONCE(intf->dev.power.runtime_status);
+	if (s == RPM_SUSPENDING || s == RPM_SUSPENDED)
+		status = pm_request_resume(&intf->dev);
+
+	if (status < 0 && status != -EINPROGRESS)
+		pm_runtime_put_noidle(&intf->dev);
+	else
 		atomic_inc(&intf->pm_usage_cnt);
-		if (atomic_read(&intf->pm_usage_cnt) > 0 &&
-				udev->state == USB_STATE_SUSPENDED)
-			queue_work(ksuspend_usb_wq, &udev->autoresume);
-	}
-	dev_vdbg(&intf->dev, "%s: status %d cnt %d\n",
-			__func__, status, atomic_read(&intf->pm_usage_cnt));
+	dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
+			__func__, atomic_read(&intf->dev.power.usage_count),
+			status);
+	if (status > 0)
+		status = 0;
 	return status;
 }
 EXPORT_SYMBOL_GPL(usb_autopm_get_interface_async);
 
+/**
+ * usb_autopm_get_interface_no_resume - increment a USB interface's PM-usage counter
+ * @intf: the usb_interface whose counter should be incremented
+ *
+ * This routine increments @intf's usage counter but does not carry out an
+ * autoresume.
+ *
+ * This routine can run in atomic context.
+ */
+void usb_autopm_get_interface_no_resume(struct usb_interface *intf)
+{
+	struct usb_device	*udev = interface_to_usbdev(intf);
+
+	udev->last_busy = jiffies;
+	atomic_inc(&intf->pm_usage_cnt);
+	pm_runtime_get_noresume(&intf->dev);
+}
+EXPORT_SYMBOL_GPL(usb_autopm_get_interface_no_resume);
+
+/* Internal routine to check whether we may autosuspend a device. */
+static int autosuspend_check(struct usb_device *udev)
+{
+	int			i;
+	struct usb_interface	*intf;
+	unsigned long		suspend_time, j;
+
+	/* Fail if autosuspend is disabled, or any interfaces are in use, or
+	 * any interface drivers require remote wakeup but it isn't available.
+	 */
+	udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
+	if (udev->actconfig) {
+		for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
+			intf = udev->actconfig->interface[i];
+
+			/* We don't need to check interfaces that are
+			 * disabled for runtime PM.  Either they are unbound
+			 * or else their drivers don't support autosuspend
+			 * and so they are permanently active.
+			 */
+			if (intf->dev.power.disable_depth)
+				continue;
+			if (atomic_read(&intf->dev.power.usage_count) > 0)
+				return -EBUSY;
+			if (intf->needs_remote_wakeup &&
+					!udev->do_remote_wakeup) {
+				dev_dbg(&udev->dev, "remote wakeup needed "
+						"for autosuspend\n");
+				return -EOPNOTSUPP;
+			}
+
+			/* Don't allow autosuspend if the device will need
+			 * a reset-resume and any of its interface drivers
+			 * doesn't include support or needs remote wakeup.
+			 */
+			if (udev->quirks & USB_QUIRK_RESET_RESUME) {
+				struct usb_driver *driver;
+
+				driver = to_usb_driver(intf->dev.driver);
+				if (!driver->reset_resume ||
+						intf->needs_remote_wakeup)
+					return -EOPNOTSUPP;
+			}
+		}
+	}
+
+	/* If everything is okay but the device hasn't been idle for long
+	 * enough, queue a delayed autosuspend request.
+	 */
+	j = ACCESS_ONCE(jiffies);
+	suspend_time = udev->last_busy + udev->autosuspend_delay;
+	if (time_before(j, suspend_time)) {
+		pm_schedule_suspend(&udev->dev, jiffies_to_msecs(
+				round_jiffies_up_relative(suspend_time - j)));
+		return -EAGAIN;
+	}
+	return 0;
+}
+
+static int usb_runtime_suspend(struct device *dev)
+{
+	int	status = 0;
+
+	/* A USB device can be suspended if it passes the various autosuspend
+	 * checks.  Runtime suspend for a USB device means suspending all the
+	 * interfaces and then the device itself.
+	 */
+	if (is_usb_device(dev)) {
+		struct usb_device	*udev = to_usb_device(dev);
+
+		if (autosuspend_check(udev) != 0)
+			return -EAGAIN;
+
+		status = usb_suspend_both(udev, PMSG_AUTO_SUSPEND);
+
+		/* If an interface fails the suspend, adjust the last_busy
+		 * time so that we don't get another suspend attempt right
+		 * away.
+		 */
+		if (status) {
+			udev->last_busy = jiffies +
+					(udev->autosuspend_delay == 0 ?
+						HZ/2 : 0);
+		}
+
+		/* Prevent the parent from suspending immediately after */
+		else if (udev->parent) {
+			udev->parent->last_busy = jiffies;
+		}
+	}
+
+	/* Runtime suspend for a USB interface doesn't mean anything. */
+	return status;
+}
+
+static int usb_runtime_resume(struct device *dev)
+{
+	/* Runtime resume for a USB device means resuming both the device
+	 * and all its interfaces.
+	 */
+	if (is_usb_device(dev)) {
+		struct usb_device	*udev = to_usb_device(dev);
+		int			status;
+
+		status = usb_resume_both(udev, PMSG_AUTO_RESUME);
+		udev->last_busy = jiffies;
+		return status;
+	}
+
+	/* Runtime resume for a USB interface doesn't mean anything. */
+	return 0;
+}
+
+static int usb_runtime_idle(struct device *dev)
+{
+	/* An idle USB device can be suspended if it passes the various
+	 * autosuspend checks.  An idle interface can be suspended at
+	 * any time.
+	 */
+	if (is_usb_device(dev)) {
+		struct usb_device	*udev = to_usb_device(dev);
+
+		if (autosuspend_check(udev) != 0)
+			return 0;
+	}
+
+	pm_runtime_suspend(dev);
+	return 0;
+}
+
+static struct dev_pm_ops usb_bus_pm_ops = {
+	.runtime_suspend =	usb_runtime_suspend,
+	.runtime_resume =	usb_runtime_resume,
+	.runtime_idle =		usb_runtime_idle,
+};
+
 #else
 
-void usb_autosuspend_work(struct work_struct *work)
-{}
-
-void usb_autoresume_work(struct work_struct *work)
-{}
+#define usb_bus_pm_ops	(*(struct dev_pm_ops *) NULL)
 
 #endif /* CONFIG_USB_SUSPEND */
 
@@ -1891,4 +1781,5 @@
 	.name =		"usb",
 	.match =	usb_device_match,
 	.uevent =	usb_uevent,
+	.pm =		&usb_bus_pm_ops,
 };
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index fc4290b..b07ba05 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -39,6 +39,7 @@
 #include <linux/platform_device.h>
 #include <linux/workqueue.h>
 #include <linux/mutex.h>
+#include <linux/pm_runtime.h>
 
 #include <linux/usb.h>
 
@@ -1858,6 +1859,10 @@
 	return status;
 }
 
+#endif	/* CONFIG_PM */
+
+#ifdef	CONFIG_USB_SUSPEND
+
 /* Workqueue routine for root-hub remote wakeup */
 static void hcd_resume_work(struct work_struct *work)
 {
@@ -1884,12 +1889,12 @@
 
 	spin_lock_irqsave (&hcd_root_hub_lock, flags);
 	if (hcd->rh_registered)
-		queue_work(ksuspend_usb_wq, &hcd->wakeup_work);
+		queue_work(pm_wq, &hcd->wakeup_work);
 	spin_unlock_irqrestore (&hcd_root_hub_lock, flags);
 }
 EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub);
 
-#endif
+#endif	/* CONFIG_USB_SUSPEND */
 
 /*-------------------------------------------------------------------------*/
 
@@ -2034,7 +2039,7 @@
 	init_timer(&hcd->rh_timer);
 	hcd->rh_timer.function = rh_timer_func;
 	hcd->rh_timer.data = (unsigned long) hcd;
-#ifdef CONFIG_PM
+#ifdef CONFIG_USB_SUSPEND
 	INIT_WORK(&hcd->wakeup_work, hcd_resume_work);
 #endif
 	mutex_init(&hcd->bandwidth_mutex);
@@ -2234,7 +2239,7 @@
 	hcd->rh_registered = 0;
 	spin_unlock_irq (&hcd_root_hub_lock);
 
-#ifdef CONFIG_PM
+#ifdef CONFIG_USB_SUSPEND
 	cancel_work_sync(&hcd->wakeup_work);
 #endif
 
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 70a7e49..8953ded 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -80,7 +80,7 @@
 
 	struct timer_list	rh_timer;	/* drives root-hub polling */
 	struct urb		*status_urb;	/* the current status urb */
-#ifdef CONFIG_PM
+#ifdef CONFIG_USB_SUSPEND
 	struct work_struct	wakeup_work;	/* for remote wakeup */
 #endif
 
@@ -464,16 +464,20 @@
 #define usb_endpoint_out(ep_dir)	(!((ep_dir) & USB_DIR_IN))
 
 #ifdef CONFIG_PM
-extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd);
 extern void usb_root_hub_lost_power(struct usb_device *rhdev);
 extern int hcd_bus_suspend(struct usb_device *rhdev, pm_message_t msg);
 extern int hcd_bus_resume(struct usb_device *rhdev, pm_message_t msg);
+#endif /* CONFIG_PM */
+
+#ifdef CONFIG_USB_SUSPEND
+extern void usb_hcd_resume_root_hub(struct usb_hcd *hcd);
 #else
 static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd)
 {
 	return;
 }
-#endif /* CONFIG_PM */
+#endif /* CONFIG_USB_SUSPEND */
+
 
 /*
  * USB device fs stuff
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 746f26f..0e0a190 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -22,6 +22,7 @@
 #include <linux/kthread.h>
 #include <linux/mutex.h>
 #include <linux/freezer.h>
+#include <linux/pm_runtime.h>
 
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
@@ -71,7 +72,6 @@
 
 	unsigned		mA_per_port;	/* current for each child */
 
-	unsigned		init_done:1;
 	unsigned		limited_power:1;
 	unsigned		quiescing:1;
 	unsigned		disconnected:1;
@@ -820,7 +820,6 @@
 	}
  init3:
 	hub->quiescing = 0;
-	hub->init_done = 1;
 
 	status = usb_submit_urb(hub->urb, GFP_NOIO);
 	if (status < 0)
@@ -861,11 +860,6 @@
 	int i;
 
 	cancel_delayed_work_sync(&hub->init_work);
-	if (!hub->init_done) {
-		hub->init_done = 1;
-		usb_autopm_put_interface_no_suspend(
-				to_usb_interface(hub->intfdev));
-	}
 
 	/* khubd and related activity won't re-trigger */
 	hub->quiescing = 1;
@@ -1405,10 +1399,8 @@
 		if (udev->children[i])
 			recursively_mark_NOTATTACHED(udev->children[i]);
 	}
-	if (udev->state == USB_STATE_SUSPENDED) {
-		udev->discon_suspended = 1;
+	if (udev->state == USB_STATE_SUSPENDED)
 		udev->active_duration -= jiffies;
-	}
 	udev->state = USB_STATE_NOTATTACHED;
 }
 
@@ -1532,31 +1524,6 @@
 		udev->devnum = devnum;
 }
 
-#ifdef	CONFIG_USB_SUSPEND
-
-static void usb_stop_pm(struct usb_device *udev)
-{
-	/* Synchronize with the ksuspend thread to prevent any more
-	 * autosuspend requests from being submitted, and decrement
-	 * the parent's count of unsuspended children.
-	 */
-	usb_pm_lock(udev);
-	if (udev->parent && !udev->discon_suspended)
-		usb_autosuspend_device(udev->parent);
-	usb_pm_unlock(udev);
-
-	/* Stop any autosuspend or autoresume requests already submitted */
-	cancel_delayed_work_sync(&udev->autosuspend);
-	cancel_work_sync(&udev->autoresume);
-}
-
-#else
-
-static inline void usb_stop_pm(struct usb_device *udev)
-{ }
-
-#endif
-
 /**
  * usb_disconnect - disconnect a device (usbcore-internal)
  * @pdev: pointer to device being disconnected
@@ -1625,8 +1592,6 @@
 	*pdev = NULL;
 	spin_unlock_irq(&device_state_lock);
 
-	usb_stop_pm(udev);
-
 	put_device(&udev->dev);
 }
 
@@ -1803,9 +1768,6 @@
 	int err;
 
 	if (udev->parent) {
-		/* Increment the parent's count of unsuspended children */
-		usb_autoresume_device(udev->parent);
-
 		/* Initialize non-root-hub device wakeup to disabled;
 		 * device (un)configuration controls wakeup capable
 		 * sysfs power/wakeup controls wakeup enabled/disabled
@@ -1814,6 +1776,10 @@
 		device_set_wakeup_enable(&udev->dev, 1);
 	}
 
+	/* Tell the runtime-PM framework the device is active */
+	pm_runtime_set_active(&udev->dev);
+	pm_runtime_enable(&udev->dev);
+
 	usb_detect_quirks(udev);
 	err = usb_enumerate_device(udev);	/* Read descriptors */
 	if (err < 0)
@@ -1844,7 +1810,8 @@
 
 fail:
 	usb_set_device_state(udev, USB_STATE_NOTATTACHED);
-	usb_stop_pm(udev);
+	pm_runtime_disable(&udev->dev);
+	pm_runtime_set_suspended(&udev->dev);
 	return err;
 }
 
@@ -2408,8 +2375,11 @@
 
 	if (udev->state == USB_STATE_SUSPENDED) {
 		dev_dbg(&udev->dev, "usb %sresume\n", "wakeup-");
-		usb_mark_last_busy(udev);
-		status = usb_external_resume_device(udev, PMSG_REMOTE_RESUME);
+		status = usb_autoresume_device(udev);
+		if (status == 0) {
+			/* Let the drivers do their thing, then... */
+			usb_autosuspend_device(udev);
+		}
 	}
 	return status;
 }
@@ -2446,11 +2416,6 @@
 	return status;
 }
 
-int usb_remote_wakeup(struct usb_device *udev)
-{
-	return 0;
-}
-
 #endif
 
 static int hub_suspend(struct usb_interface *intf, pm_message_t msg)
@@ -3268,7 +3233,7 @@
 		 * disconnected while waiting for the lock to succeed. */
 		usb_lock_device(hdev);
 		if (unlikely(hub->disconnected))
-			goto loop2;
+			goto loop_disconnected;
 
 		/* If the hub has died, clean up after it */
 		if (hdev->state == USB_STATE_NOTATTACHED) {
@@ -3428,7 +3393,7 @@
 		 * kick_khubd() and allow autosuspend.
 		 */
 		usb_autopm_put_interface(intf);
- loop2:
+ loop_disconnected:
 		usb_unlock_device(hdev);
 		kref_put(&hub->kref, hub_release);
 
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index df73574..73de41b 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1843,7 +1843,6 @@
 		intf->dev.dma_mask = dev->dev.dma_mask;
 		INIT_WORK(&intf->reset_ws, __usb_queue_reset_device);
 		device_initialize(&intf->dev);
-		mark_quiesced(intf);
 		dev_set_name(&intf->dev, "%d-%s:%d.%d",
 			dev->bus->busnum, dev->devpath,
 			configuration, alt->desc.bInterfaceNumber);
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 0daff0d..32966cc 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -49,9 +49,6 @@
 
 static int nousb;	/* Disable USB when built into kernel image */
 
-/* Workqueue for autosuspend and for remote wakeup of root hubs */
-struct workqueue_struct *ksuspend_usb_wq;
-
 #ifdef	CONFIG_USB_SUSPEND
 static int usb_autosuspend_delay = 2;		/* Default delay value,
 						 * in seconds */
@@ -264,23 +261,6 @@
 
 #ifdef	CONFIG_PM
 
-static int ksuspend_usb_init(void)
-{
-	/* This workqueue is supposed to be both freezable and
-	 * singlethreaded.  Its job doesn't justify running on more
-	 * than one CPU.
-	 */
-	ksuspend_usb_wq = create_freezeable_workqueue("ksuspend_usbd");
-	if (!ksuspend_usb_wq)
-		return -ENOMEM;
-	return 0;
-}
-
-static void ksuspend_usb_cleanup(void)
-{
-	destroy_workqueue(ksuspend_usb_wq);
-}
-
 /* USB device Power-Management thunks.
  * There's no need to distinguish here between quiescing a USB device
  * and powering it down; the generic_suspend() routine takes care of
@@ -296,7 +276,7 @@
 static void usb_dev_complete(struct device *dev)
 {
 	/* Currently used only for rebinding interfaces */
-	usb_resume(dev, PMSG_RESUME);	/* Message event is meaningless */
+	usb_resume(dev, PMSG_ON);	/* FIXME: change to PMSG_COMPLETE */
 }
 
 static int usb_dev_suspend(struct device *dev)
@@ -342,9 +322,7 @@
 
 #else
 
-#define ksuspend_usb_init()	0
-#define ksuspend_usb_cleanup()	do {} while (0)
-#define usb_device_pm_ops	(*(struct dev_pm_ops *)0)
+#define usb_device_pm_ops	(*(struct dev_pm_ops *) NULL)
 
 #endif	/* CONFIG_PM */
 
@@ -472,9 +450,6 @@
 	INIT_LIST_HEAD(&dev->filelist);
 
 #ifdef	CONFIG_PM
-	mutex_init(&dev->pm_mutex);
-	INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work);
-	INIT_WORK(&dev->autoresume, usb_autoresume_work);
 	dev->autosuspend_delay = usb_autosuspend_delay * HZ;
 	dev->connect_time = jiffies;
 	dev->active_duration = -jiffies;
@@ -1117,9 +1092,6 @@
 	if (retval)
 		goto out;
 
-	retval = ksuspend_usb_init();
-	if (retval)
-		goto out;
 	retval = bus_register(&usb_bus_type);
 	if (retval)
 		goto bus_register_failed;
@@ -1159,7 +1131,7 @@
 bus_notifier_failed:
 	bus_unregister(&usb_bus_type);
 bus_register_failed:
-	ksuspend_usb_cleanup();
+	usb_debugfs_cleanup();
 out:
 	return retval;
 }
@@ -1181,7 +1153,6 @@
 	usb_hub_cleanup();
 	bus_unregister_notifier(&usb_bus_type, &usb_bus_nb);
 	bus_unregister(&usb_bus_type);
-	ksuspend_usb_cleanup();
 	usb_debugfs_cleanup();
 }
 
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 2b74a7f..cd88220 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -55,25 +55,8 @@
 extern int usb_suspend(struct device *dev, pm_message_t msg);
 extern int usb_resume(struct device *dev, pm_message_t msg);
 
-extern void usb_autosuspend_work(struct work_struct *work);
-extern void usb_autoresume_work(struct work_struct *work);
 extern int usb_port_suspend(struct usb_device *dev, pm_message_t msg);
 extern int usb_port_resume(struct usb_device *dev, pm_message_t msg);
-extern int usb_external_suspend_device(struct usb_device *udev,
-		pm_message_t msg);
-extern int usb_external_resume_device(struct usb_device *udev,
-		pm_message_t msg);
-extern int usb_remote_wakeup(struct usb_device *dev);
-
-static inline void usb_pm_lock(struct usb_device *udev)
-{
-	mutex_lock_nested(&udev->pm_mutex, udev->level);
-}
-
-static inline void usb_pm_unlock(struct usb_device *udev)
-{
-	mutex_unlock(&udev->pm_mutex);
-}
 
 #else
 
@@ -87,14 +70,6 @@
 	return 0;
 }
 
-static inline int usb_remote_wakeup(struct usb_device *udev)
-{
-	return 0;
-}
-
-static inline void usb_pm_lock(struct usb_device *udev) {}
-static inline void usb_pm_unlock(struct usb_device *udev) {}
-
 #endif
 
 #ifdef CONFIG_USB_SUSPEND
@@ -102,6 +77,7 @@
 extern void usb_autosuspend_device(struct usb_device *udev);
 extern void usb_try_autosuspend_device(struct usb_device *udev);
 extern int usb_autoresume_device(struct usb_device *udev);
+extern int usb_remote_wakeup(struct usb_device *dev);
 
 #else
 
@@ -112,9 +88,13 @@
 	return 0;
 }
 
+static inline int usb_remote_wakeup(struct usb_device *udev)
+{
+	return 0;
+}
+
 #endif
 
-extern struct workqueue_struct *ksuspend_usb_wq;
 extern struct bus_type usb_bus_type;
 extern struct device_type usb_device_type;
 extern struct device_type usb_if_device_type;
@@ -144,23 +124,6 @@
 			for_devices;
 }
 
-/* Interfaces and their "power state" are owned by usbcore */
-
-static inline void mark_active(struct usb_interface *f)
-{
-	f->is_active = 1;
-}
-
-static inline void mark_quiesced(struct usb_interface *f)
-{
-	f->is_active = 0;
-}
-
-static inline int is_active(const struct usb_interface *f)
-{
-	return f->is_active;
-}
-
 
 /* for labeling diagnostics */
 extern const char *usbcore_name;