Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (172 commits)
  USB: Add support for SuperSpeed isoc endpoints
  xhci: Clean up cycle bit math used during stalls.
  xhci: Fix cycle bit calculation during stall handling.
  xhci: Update internal dequeue pointers after stalls.
  USB: Disable auto-suspend for USB 3.0 hubs.
  USB: Remove bogus USB_PORT_STAT_SUPER_SPEED symbol.
  xhci: Return canceled URBs immediately when host is halted.
  xhci: Fixes for suspend/resume of shared HCDs.
  xhci: Fix re-init on power loss after resume.
  xhci: Make roothub functions deal with device removal.
  xhci: Limit roothub ports to 15 USB3 & 31 USB2 ports.
  xhci: Return a USB 3.0 hub descriptor for USB3 roothub.
  xhci: Register second xHCI roothub.
  xhci: Change xhci_find_slot_id_by_port() API.
  xhci: Refactor bus suspend state into a struct.
  xhci: Index with a port array instead of PORTSC addresses.
  USB: Set usb_hcd->state and flags for shared roothubs.
  usb: Make core allocate resources per PCI-device.
  usb: Store bus type in usb_hcd, not in driver flags.
  usb: Change usb_hcd->bandwidth_mutex to a pointer.
  ...

9 files changed, 275 insertions, 234 deletions

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index c292d5c..a914010 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1950,31 +1950,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
 		goto fail0;
 	}
 
-	switch (plat->mode) {
-	case MUSB_HOST:
-#ifdef CONFIG_USB_MUSB_HDRC_HCD
-		break;
-#else
-		goto bad_config;
-#endif
-	case MUSB_PERIPHERAL:
-#ifdef CONFIG_USB_GADGET_MUSB_HDRC
-		break;
-#else
-		goto bad_config;
-#endif
-	case MUSB_OTG:
-#ifdef CONFIG_USB_MUSB_OTG
-		break;
-#else
-bad_config:
-#endif
-	default:
-		dev_err(dev, "incompatible Kconfig role setting\n");
-		status = -EINVAL;
-		goto fail0;
-	}
-
 	/* allocate */
 	musb = allocate_instance(dev, plat->config, ctrl);
 	if (!musb) {
@@ -1982,6 +1957,10 @@ bad_config:
 		goto fail0;
 	}
 
+	pm_runtime_use_autosuspend(musb->controller);
+	pm_runtime_set_autosuspend_delay(musb->controller, 200);
+	pm_runtime_enable(musb->controller);
+
 	spin_lock_init(&musb->lock);
 	musb->board_mode = plat->mode;
 	musb->board_set_power = plat->set_power;
@@ -2117,6 +2096,8 @@ bad_config:
 	if (status < 0)
 		goto fail3;
 
+	pm_runtime_put(musb->controller);
+
 	status = musb_init_debugfs(musb);
 	if (status < 0)
 		goto fail4;
@@ -2216,9 +2197,11 @@ static int __exit musb_remove(struct platform_device *pdev)
 	 *  - Peripheral mode: peripheral is deactivated (or never-activated)
 	 *  - OTG mode: both roles are deactivated (or never-activated)
 	 */
+	pm_runtime_get_sync(musb->controller);
 	musb_exit_debugfs(musb);
 	musb_shutdown(pdev);
 
+	pm_runtime_put(musb->controller);
 	musb_free(musb);
 	iounmap(ctrl_base);
 	device_init_wakeup(&pdev->dev, 0);
@@ -2404,9 +2387,41 @@ static int musb_resume_noirq(struct device *dev)
 	return 0;
 }
 
+static int musb_runtime_suspend(struct device *dev)
+{
+	struct musb	*musb = dev_to_musb(dev);
+
+	musb_save_context(musb);
+
+	return 0;
+}
+
+static int musb_runtime_resume(struct device *dev)
+{
+	struct musb	*musb = dev_to_musb(dev);
+	static int	first = 1;
+
+	/*
+	 * When pm_runtime_get_sync called for the first time in driver
+	 * init,  some of the structure is still not initialized which is
+	 * used in restore function. But clock needs to be
+	 * enabled before any register access, so
+	 * pm_runtime_get_sync has to be called.
+	 * Also context restore without save does not make
+	 * any sense
+	 */
+	if (!first)
+		musb_restore_context(musb);
+	first = 0;
+
+	return 0;
+}
+
 static const struct dev_pm_ops musb_dev_pm_ops = {
 	.suspend	= musb_suspend,
 	.resume_noirq	= musb_resume_noirq,
+	.runtime_suspend = musb_runtime_suspend,
+	.runtime_resume = musb_runtime_resume,
 };
 
 #define MUSB_DEV_PM_OPS (&musb_dev_pm_ops)
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index e6400be..4f0dd2e 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -328,7 +328,7 @@ struct musb_hw_ep {
 #endif
 };
 
-static inline struct usb_request *next_in_request(struct musb_hw_ep *hw_ep)
+static inline struct musb_request *next_in_request(struct musb_hw_ep *hw_ep)
 {
 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 	return next_request(&hw_ep->ep_in);
@@ -337,7 +337,7 @@ static inline struct usb_request *next_in_request(struct musb_hw_ep *hw_ep)
 #endif
 }
 
-static inline struct usb_request *next_out_request(struct musb_hw_ep *hw_ep)
+static inline struct musb_request *next_out_request(struct musb_hw_ep *hw_ep)
 {
 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 	return next_request(&hw_ep->ep_out);
@@ -358,10 +358,6 @@ struct musb_csr_regs {
 
 struct musb_context_registers {
 
-#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
-    defined(CONFIG_ARCH_OMAP4)
-	u32 otg_sysconfig, otg_forcestandby;
-#endif
 	u8 power;
 	u16 intrtxe, intrrxe;
 	u8 intrusbe;
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 2fe3046..5c7b321 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -189,7 +189,7 @@ __acquires(ep->musb->lock)
 
 	req = to_musb_request(request);
 
-	list_del(&request->list);
+	list_del(&req->list);
 	if (req->request.status == -EINPROGRESS)
 		req->request.status = status;
 	musb = req->musb;
@@ -251,9 +251,8 @@ static void nuke(struct musb_ep *ep, const int status)
 		ep->dma = NULL;
 	}
 
-	while (!list_empty(&(ep->req_list))) {
-		req = container_of(ep->req_list.next, struct musb_request,
-				request.list);
+	while (!list_empty(&ep->req_list)) {
+		req = list_first_entry(&ep->req_list, struct musb_request, list);
 		musb_g_giveback(ep, &req->request, status);
 	}
 }
@@ -485,6 +484,7 @@ static void txstate(struct musb *musb, struct musb_request *req)
 void musb_g_tx(struct musb *musb, u8 epnum)
 {
 	u16			csr;
+	struct musb_request	*req;
 	struct usb_request	*request;
 	u8 __iomem		*mbase = musb->mregs;
 	struct musb_ep		*musb_ep = &musb->endpoints[epnum].ep_in;
@@ -492,7 +492,8 @@ void musb_g_tx(struct musb *musb, u8 epnum)
 	struct dma_channel	*dma;
 
 	musb_ep_select(mbase, epnum);
-	request = next_request(musb_ep);
+	req = next_request(musb_ep);
+	request = &req->request;
 
 	csr = musb_readw(epio, MUSB_TXCSR);
 	DBG(4, "<== %s, txcsr %04x\n", musb_ep->end_point.name, csr);
@@ -571,15 +572,15 @@ void musb_g_tx(struct musb *musb, u8 epnum)
 
 		if (request->actual == request->length) {
 			musb_g_giveback(musb_ep, request, 0);
-			request = musb_ep->desc ? next_request(musb_ep) : NULL;
-			if (!request) {
+			req = musb_ep->desc ? next_request(musb_ep) : NULL;
+			if (!req) {
 				DBG(4, "%s idle now\n",
 					musb_ep->end_point.name);
 				return;
 			}
 		}
 
-		txstate(musb, to_musb_request(request));
+		txstate(musb, req);
 	}
 }
 
@@ -821,6 +822,7 @@ static void rxstate(struct musb *musb, struct musb_request *req)
 void musb_g_rx(struct musb *musb, u8 epnum)
 {
 	u16			csr;
+	struct musb_request	*req;
 	struct usb_request	*request;
 	void __iomem		*mbase = musb->mregs;
 	struct musb_ep		*musb_ep;
@@ -835,10 +837,12 @@ void musb_g_rx(struct musb *musb, u8 epnum)
 
 	musb_ep_select(mbase, epnum);
 
-	request = next_request(musb_ep);
-	if (!request)
+	req = next_request(musb_ep);
+	if (!req)
 		return;
 
+	request = &req->request;
+
 	csr = musb_readw(epio, MUSB_RXCSR);
 	dma = is_dma_capable() ? musb_ep->dma : NULL;
 
@@ -914,15 +918,15 @@ void musb_g_rx(struct musb *musb, u8 epnum)
 #endif
 		musb_g_giveback(musb_ep, request, 0);
 
-		request = next_request(musb_ep);
-		if (!request)
+		req = next_request(musb_ep);
+		if (!req)
 			return;
 	}
 #if defined(CONFIG_USB_INVENTRA_DMA) || defined(CONFIG_USB_TUSB_OMAP_DMA)
 exit:
 #endif
 	/* Analyze request */
-	rxstate(musb, to_musb_request(request));
+	rxstate(musb, req);
 }
 
 /* ------------------------------------------------------------ */
@@ -974,7 +978,7 @@ static int musb_gadget_enable(struct usb_ep *ep,
 			ok = musb->hb_iso_rx;
 
 		if (!ok) {
-			DBG(4, "%s: not support ISO high bandwidth\n", __func__);
+			DBG(4, "no support for high bandwidth ISO\n");
 			goto fail;
 		}
 		musb_ep->hb_mult = (tmp >> 11) & 3;
@@ -998,7 +1002,7 @@ static int musb_gadget_enable(struct usb_ep *ep,
 			goto fail;
 
 		if (tmp > hw_ep->max_packet_sz_tx) {
-			DBG(4, "%s: packet size beyond hw fifo size\n", __func__);
+			DBG(4, "packet size beyond hardware FIFO size\n");
 			goto fail;
 		}
 
@@ -1038,7 +1042,7 @@ static int musb_gadget_enable(struct usb_ep *ep,
 			goto fail;
 
 		if (tmp > hw_ep->max_packet_sz_rx) {
-			DBG(4, "%s: packet size beyond hw fifo size\n", __func__);
+			DBG(4, "packet size beyond hardware FIFO size\n");
 			goto fail;
 		}
 
@@ -1171,7 +1175,6 @@ struct usb_request *musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
 		return NULL;
 	}
 
-	INIT_LIST_HEAD(&request->request.list);
 	request->request.dma = DMA_ADDR_INVALID;
 	request->epnum = musb_ep->current_epnum;
 	request->ep = musb_ep;
@@ -1257,10 +1260,10 @@ static int musb_gadget_queue(struct usb_ep *ep, struct usb_request *req,
 	}
 
 	/* add request to the list */
-	list_add_tail(&(request->request.list), &(musb_ep->req_list));
+	list_add_tail(&request->list, &musb_ep->req_list);
 
 	/* it this is the head of the queue, start i/o ... */
-	if (!musb_ep->busy && &request->request.list == musb_ep->req_list.next)
+	if (!musb_ep->busy && &request->list == musb_ep->req_list.next)
 		musb_ep_restart(musb, request);
 
 cleanup:
@@ -1271,7 +1274,8 @@ cleanup:
 static int musb_gadget_dequeue(struct usb_ep *ep, struct usb_request *request)
 {
 	struct musb_ep		*musb_ep = to_musb_ep(ep);
-	struct usb_request	*r;
+	struct musb_request	*req = to_musb_request(request);
+	struct musb_request	*r;
 	unsigned long		flags;
 	int			status = 0;
 	struct musb		*musb = musb_ep->musb;
@@ -1282,10 +1286,10 @@ static int musb_gadget_dequeue(struct usb_ep *ep, struct usb_request *request)
 	spin_lock_irqsave(&musb->lock, flags);
 
 	list_for_each_entry(r, &musb_ep->req_list, list) {
-		if (r == request)
+		if (r == req)
 			break;
 	}
-	if (r != request) {
+	if (r != req) {
 		DBG(3, "request %p not queued to %s\n", request, ep->name);
 		status = -EINVAL;
 		goto done;
@@ -1349,7 +1353,7 @@ static int musb_gadget_set_halt(struct usb_ep *ep, int value)
 
 	musb_ep_select(mbase, epnum);
 
-	request = to_musb_request(next_request(musb_ep));
+	request = next_request(musb_ep);
 	if (value) {
 		if (request) {
 			DBG(3, "request in progress, cannot halt %s\n",
@@ -1801,90 +1805,105 @@ void musb_gadget_cleanup(struct musb *musb)
 int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 		int (*bind)(struct usb_gadget *))
 {
-	int retval;
-	unsigned long flags;
-	struct musb *musb = the_gadget;
+	struct musb		*musb = the_gadget;
+	unsigned long		flags;
+	int			retval = -EINVAL;
 
 	if (!driver
 			|| driver->speed != USB_SPEED_HIGH
 			|| !bind || !driver->setup)
-		return -EINVAL;
+		goto err0;
 
 	/* driver must be initialized to support peripheral mode */
 	if (!musb) {
-		DBG(1, "%s, no dev??\n", __func__);
-		return -ENODEV;
+		DBG(1, "no dev??\n");
+		retval = -ENODEV;
+		goto err0;
 	}
 
+	pm_runtime_get_sync(musb->controller);
+
 	DBG(3, "registering driver %s\n", driver->function);
-	spin_lock_irqsave(&musb->lock, flags);
 
 	if (musb->gadget_driver) {
 		DBG(1, "%s is already bound to %s\n",
 				musb_driver_name,
 				musb->gadget_driver->driver.name);
 		retval = -EBUSY;
-	} else {
-		musb->gadget_driver = driver;
-		musb->g.dev.driver = &driver->driver;
-		driver->driver.bus = NULL;
-		musb->softconnect = 1;
-		retval = 0;
+		goto err0;
 	}
 
+	spin_lock_irqsave(&musb->lock, flags);
+	musb->gadget_driver = driver;
+	musb->g.dev.driver = &driver->driver;
+	driver->driver.bus = NULL;
+	musb->softconnect = 1;
 	spin_unlock_irqrestore(&musb->lock, flags);
 
-	if (retval == 0) {
-		retval = bind(&musb->g);
-		if (retval != 0) {
-			DBG(3, "bind to driver %s failed --> %d\n",
-					driver->driver.name, retval);
-			musb->gadget_driver = NULL;
-			musb->g.dev.driver = NULL;
-		}
+	retval = bind(&musb->g);
+	if (retval) {
+		DBG(3, "bind to driver %s failed --> %d\n",
+				driver->driver.name, retval);
+		goto err1;
+	}
 
-		spin_lock_irqsave(&musb->lock, flags);
+	spin_lock_irqsave(&musb->lock, flags);
 
-		otg_set_peripheral(musb->xceiv, &musb->g);
-		musb->xceiv->state = OTG_STATE_B_IDLE;
-		musb->is_active = 1;
+	otg_set_peripheral(musb->xceiv, &musb->g);
+	musb->xceiv->state = OTG_STATE_B_IDLE;
+	musb->is_active = 1;
 
-		/* FIXME this ignores the softconnect flag.  Drivers are
-		 * allowed hold the peripheral inactive until for example
-		 * userspace hooks up printer hardware or DSP codecs, so
-		 * hosts only see fully functional devices.
-		 */
+	/*
+	 * FIXME this ignores the softconnect flag.  Drivers are
+	 * allowed hold the peripheral inactive until for example
+	 * userspace hooks up printer hardware or DSP codecs, so
+	 * hosts only see fully functional devices.
+	 */
 
-		if (!is_otg_enabled(musb))
-			musb_start(musb);
+	if (!is_otg_enabled(musb))
+		musb_start(musb);
 
-		otg_set_peripheral(musb->xceiv, &musb->g);
+	otg_set_peripheral(musb->xceiv, &musb->g);
 
-		spin_unlock_irqrestore(&musb->lock, flags);
+	spin_unlock_irqrestore(&musb->lock, flags);
 
-		if (is_otg_enabled(musb)) {
-			struct usb_hcd	*hcd = musb_to_hcd(musb);
+	if (is_otg_enabled(musb)) {
+		struct usb_hcd	*hcd = musb_to_hcd(musb);
 
-			DBG(3, "OTG startup...\n");
+		DBG(3, "OTG startup...\n");
 
-			/* REVISIT:  funcall to other code, which also
-			 * handles power budgeting ... this way also
-			 * ensures HdrcStart is indirectly called.
-			 */
-			retval = usb_add_hcd(musb_to_hcd(musb), -1, 0);
-			if (retval < 0) {
-				DBG(1, "add_hcd failed, %d\n", retval);
-				spin_lock_irqsave(&musb->lock, flags);
-				otg_set_peripheral(musb->xceiv, NULL);
-				musb->gadget_driver = NULL;
-				musb->g.dev.driver = NULL;
-				spin_unlock_irqrestore(&musb->lock, flags);
-			} else {
-				hcd->self.uses_pio_for_control = 1;
-			}
+		/* REVISIT:  funcall to other code, which also
+		 * handles power budgeting ... this way also
+		 * ensures HdrcStart is indirectly called.
+		 */
+		retval = usb_add_hcd(musb_to_hcd(musb), -1, 0);
+		if (retval < 0) {
+			DBG(1, "add_hcd failed, %d\n", retval);
+			goto err2;
+
+			if ((musb->xceiv->last_event == USB_EVENT_ID)
+						&& musb->xceiv->set_vbus)
+				otg_set_vbus(musb->xceiv, 1);
 		}
+
+		hcd->self.uses_pio_for_control = 1;
+
+		if (musb->xceiv->last_event == USB_EVENT_NONE)
+			pm_runtime_put(musb->controller);
+
 	}
 
+	return 0;
+
+err2:
+	if (!is_otg_enabled(musb))
+		musb_stop(musb);
+
+err1:
+	musb->gadget_driver = NULL;
+	musb->g.dev.driver = NULL;
+
+err0:
 	return retval;
 }
 EXPORT_SYMBOL(usb_gadget_probe_driver);
@@ -1939,14 +1958,20 @@ static void stop_activity(struct musb *musb, struct usb_gadget_driver *driver)
  */
 int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 {
-	unsigned long	flags;
-	int		retval = 0;
 	struct musb	*musb = the_gadget;
+	unsigned long	flags;
 
 	if (!driver || !driver->unbind || !musb)
 		return -EINVAL;
 
-	/* REVISIT always use otg_set_peripheral() here too;
+	if (!musb->gadget_driver)
+		return -EINVAL;
+
+	if (musb->xceiv->last_event == USB_EVENT_NONE)
+		pm_runtime_get_sync(musb->controller);
+
+	/*
+	 * REVISIT always use otg_set_peripheral() here too;
 	 * this needs to shut down the OTG engine.
 	 */
 
@@ -1956,29 +1981,26 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 	musb_hnp_stop(musb);
 #endif
 
-	if (musb->gadget_driver == driver) {
+	(void) musb_gadget_vbus_draw(&musb->g, 0);
 
-		(void) musb_gadget_vbus_draw(&musb->g, 0);
+	musb->xceiv->state = OTG_STATE_UNDEFINED;
+	stop_activity(musb, driver);
+	otg_set_peripheral(musb->xceiv, NULL);
 
-		musb->xceiv->state = OTG_STATE_UNDEFINED;
-		stop_activity(musb, driver);
-		otg_set_peripheral(musb->xceiv, NULL);
+	DBG(3, "unregistering driver %s\n", driver->function);
 
-		DBG(3, "unregistering driver %s\n", driver->function);
-		spin_unlock_irqrestore(&musb->lock, flags);
-		driver->unbind(&musb->g);
-		spin_lock_irqsave(&musb->lock, flags);
+	spin_unlock_irqrestore(&musb->lock, flags);
+	driver->unbind(&musb->g);
+	spin_lock_irqsave(&musb->lock, flags);
 
-		musb->gadget_driver = NULL;
-		musb->g.dev.driver = NULL;
+	musb->gadget_driver = NULL;
+	musb->g.dev.driver = NULL;
 
-		musb->is_active = 0;
-		musb_platform_try_idle(musb, 0);
-	} else
-		retval = -EINVAL;
+	musb->is_active = 0;
+	musb_platform_try_idle(musb, 0);
 	spin_unlock_irqrestore(&musb->lock, flags);
 
-	if (is_otg_enabled(musb) && retval == 0) {
+	if (is_otg_enabled(musb)) {
 		usb_remove_hcd(musb_to_hcd(musb));
 		/* FIXME we need to be able to register another
 		 * gadget driver here and have everything work;
@@ -1986,7 +2008,12 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 		 */
 	}
 
-	return retval;
+	if (!is_otg_enabled(musb))
+		musb_stop(musb);
+
+	pm_runtime_put(musb->controller);
+
+	return 0;
 }
 EXPORT_SYMBOL(usb_gadget_unregister_driver);
 
diff --git a/drivers/usb/musb/musb_gadget.h b/drivers/usb/musb/musb_gadget.h
index a55354f..66b7c5e 100644
--- a/drivers/usb/musb/musb_gadget.h
+++ b/drivers/usb/musb/musb_gadget.h
@@ -35,6 +35,8 @@
 #ifndef __MUSB_GADGET_H
 #define __MUSB_GADGET_H
 
+#include <linux/list.h>
+
 enum buffer_map_state {
 	UN_MAPPED = 0,
 	PRE_MAPPED,
@@ -43,6 +45,7 @@ enum buffer_map_state {
 
 struct musb_request {
 	struct usb_request	request;
+	struct list_head	list;
 	struct musb_ep		*ep;
 	struct musb		*musb;
 	u8 tx;			/* endpoint direction */
@@ -94,13 +97,13 @@ static inline struct musb_ep *to_musb_ep(struct usb_ep *ep)
 	return ep ? container_of(ep, struct musb_ep, end_point) : NULL;
 }
 
-static inline struct usb_request *next_request(struct musb_ep *ep)
+static inline struct musb_request *next_request(struct musb_ep *ep)
 {
 	struct list_head	*queue = &ep->req_list;
 
 	if (list_empty(queue))
 		return NULL;
-	return container_of(queue->next, struct usb_request, list);
+	return container_of(queue->next, struct musb_request, list);
 }
 
 extern void musb_g_tx(struct musb *musb, u8 epnum);
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
index 6dd03f4..75a542e 100644
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ b/drivers/usb/musb/musb_gadget_ep0.c
@@ -304,8 +304,7 @@ __acquires(musb->lock)
 				}
 
 				/* Maybe start the first request in the queue */
-				request = to_musb_request(
-						next_request(musb_ep));
+				request = next_request(musb_ep);
 				if (!musb_ep->busy && request) {
 					DBG(3, "restarting the request\n");
 					musb_ep_restart(musb, request);
@@ -491,10 +490,12 @@ stall:
 static void ep0_rxstate(struct musb *musb)
 {
 	void __iomem		*regs = musb->control_ep->regs;
+	struct musb_request	*request;
 	struct usb_request	*req;
 	u16			count, csr;
 
-	req = next_ep0_request(musb);
+	request = next_ep0_request(musb);
+	req = &request->request;
 
 	/* read packet and ack; or stall because of gadget driver bug:
 	 * should have provided the rx buffer before setup() returned.
@@ -544,17 +545,20 @@ static void ep0_rxstate(struct musb *musb)
 static void ep0_txstate(struct musb *musb)
 {
 	void __iomem		*regs = musb->control_ep->regs;
-	struct usb_request	*request = next_ep0_request(musb);
+	struct musb_request	*req = next_ep0_request(musb);
+	struct usb_request	*request;
 	u16			csr = MUSB_CSR0_TXPKTRDY;
 	u8			*fifo_src;
 	u8			fifo_count;
 
-	if (!request) {
+	if (!req) {
 		/* WARN_ON(1); */
 		DBG(2, "odd; csr0 %04x\n", musb_readw(regs, MUSB_CSR0));
 		return;
 	}
 
+	request = &req->request;
+
 	/* load the data */
 	fifo_src = (u8 *) request->buf + request->actual;
 	fifo_count = min((unsigned) MUSB_EP0_FIFOSIZE,
@@ -598,7 +602,7 @@ static void ep0_txstate(struct musb *musb)
 static void
 musb_read_setup(struct musb *musb, struct usb_ctrlrequest *req)
 {
-	struct usb_request	*r;
+	struct musb_request	*r;
 	void __iomem		*regs = musb->control_ep->regs;
 
 	musb_read_fifo(&musb->endpoints[0], sizeof *req, (u8 *)req);
@@ -616,7 +620,7 @@ musb_read_setup(struct musb *musb, struct usb_ctrlrequest *req)
 	/* clean up any leftover transfers */
 	r = next_ep0_request(musb);
 	if (r)
-		musb_g_ep0_giveback(musb, r);
+		musb_g_ep0_giveback(musb, &r->request);
 
 	/* For zero-data requests we want to delay the STATUS stage to
 	 * avoid SETUPEND errors.  If we read data (OUT), delay accepting
@@ -758,11 +762,11 @@ irqreturn_t musb_g_ep0_irq(struct musb *musb)
 	case MUSB_EP0_STAGE_STATUSOUT:
 		/* end of sequence #1: write to host (TX state) */
 		{
-			struct usb_request	*req;
+			struct musb_request	*req;
 
 			req = next_ep0_request(musb);
 			if (req)
-				musb_g_ep0_giveback(musb, req);
+				musb_g_ep0_giveback(musb, &req->request);
 		}
 
 		/*
@@ -961,7 +965,7 @@ musb_g_ep0_queue(struct usb_ep *e, struct usb_request *r, gfp_t gfp_flags)
 	}
 
 	/* add request to the list */
-	list_add_tail(&(req->request.list), &(ep->req_list));
+	list_add_tail(&req->list, &ep->req_list);
 
 	DBG(3, "queue to %s (%s), length=%d\n",
 			ep->name, ep->is_in ? "IN/TX" : "OUT/RX",
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 0f523d7..5eef4a8 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -1335,7 +1335,7 @@ void musb_host_tx(struct musb *musb, u8 epnum)
 	if (length > qh->maxpacket)
 		length = qh->maxpacket;
 	/* Unmap the buffer so that CPU can use it */
-	unmap_urb_for_dma(musb_to_hcd(musb), urb);
+	usb_hcd_unmap_urb_for_dma(musb_to_hcd(musb), urb);
 	musb_write_fifo(hw_ep, length, urb->transfer_buffer + offset);
 	qh->segsize = length;
 
@@ -1757,7 +1757,7 @@ void musb_host_rx(struct musb *musb, u8 epnum)
 
 		if (!dma) {
 			/* Unmap the buffer so that CPU can use it */
-			unmap_urb_for_dma(musb_to_hcd(musb), urb);
+			usb_hcd_unmap_urb_for_dma(musb_to_hcd(musb), urb);
 			done = musb_host_packet_rx(musb, urb,
 					epnum, iso_err);
 			DBG(6, "read %spacket\n", done ? "last " : "");
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c
index b46d187..489104a 100644
--- a/drivers/usb/musb/musb_virthub.c
+++ b/drivers/usb/musb/musb_virthub.c
@@ -305,8 +305,8 @@ int musb_hub_control(
 		desc->bHubContrCurrent = 0;
 
 		/* workaround bogus struct definition */
-		desc->DeviceRemovable[0] = 0x02;	/* port 1 */
-		desc->DeviceRemovable[1] = 0xff;
+		desc->u.hs.DeviceRemovable[0] = 0x02;	/* port 1 */
+		desc->u.hs.DeviceRemovable[1] = 0xff;
 		}
 		break;
 	case GetHubStatus:
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index bc8badd..25cb8b0 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -33,6 +33,8 @@
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/pm_runtime.h>
+#include <linux/err.h>
 
 #include "musb_core.h"
 #include "omap2430.h"
@@ -40,7 +42,6 @@
 struct omap2430_glue {
 	struct device		*dev;
 	struct platform_device	*musb;
-	struct clk		*clk;
 };
 #define glue_to_musb(g)		platform_get_drvdata(g->musb)
 
@@ -216,20 +217,12 @@ static inline void omap2430_low_level_exit(struct musb *musb)
 	l = musb_readl(musb->mregs, OTG_FORCESTDBY);
 	l |= ENABLEFORCE;	/* enable MSTANDBY */
 	musb_writel(musb->mregs, OTG_FORCESTDBY, l);
-
-	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
-	l |= ENABLEWAKEUP;	/* enable wakeup */
-	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
 }
 
 static inline void omap2430_low_level_init(struct musb *musb)
 {
 	u32 l;
 
-	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
-	l &= ~ENABLEWAKEUP;	/* disable wakeup */
-	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
-
 	l = musb_readl(musb->mregs, OTG_FORCESTDBY);
 	l &= ~ENABLEFORCE;	/* disable MSTANDBY */
 	musb_writel(musb->mregs, OTG_FORCESTDBY, l);
@@ -251,31 +244,39 @@ static int musb_otg_notifications(struct notifier_block *nb,
 		if (is_otg_enabled(musb)) {
 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 			if (musb->gadget_driver) {
+				pm_runtime_get_sync(musb->controller);
 				otg_init(musb->xceiv);
-
-				if (data->interface_type ==
-						MUSB_INTERFACE_UTMI)
-					omap2430_musb_set_vbus(musb, 1);
-
+				omap2430_musb_set_vbus(musb, 1);
 			}
 #endif
 		} else {
+			pm_runtime_get_sync(musb->controller);
 			otg_init(musb->xceiv);
-			if (data->interface_type ==
-					MUSB_INTERFACE_UTMI)
-				omap2430_musb_set_vbus(musb, 1);
+			omap2430_musb_set_vbus(musb, 1);
 		}
 		break;
 
 	case USB_EVENT_VBUS:
 		DBG(4, "VBUS Connect\n");
 
+		if (musb->gadget_driver)
+			pm_runtime_get_sync(musb->controller);
+
 		otg_init(musb->xceiv);
 		break;
 
 	case USB_EVENT_NONE:
 		DBG(4, "VBUS Disconnect\n");
 
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+		if (is_otg_enabled(musb))
+			if (musb->gadget_driver)
+#endif
+			{
+				pm_runtime_mark_last_busy(musb->controller);
+				pm_runtime_put_autosuspend(musb->controller);
+			}
+
 		if (data->interface_type == MUSB_INTERFACE_UTMI) {
 			if (musb->xceiv->set_vbus)
 				otg_set_vbus(musb->xceiv, 0);
@@ -307,22 +308,11 @@ static int omap2430_musb_init(struct musb *musb)
 		return -ENODEV;
 	}
 
-	omap2430_low_level_init(musb);
-
-	l = musb_readl(musb->mregs, OTG_SYSCONFIG);
-	l &= ~ENABLEWAKEUP;	/* disable wakeup */
-	l &= ~NOSTDBY;		/* remove possible nostdby */
-	l |= SMARTSTDBY;	/* enable smart standby */
-	l &= ~AUTOIDLE;		/* disable auto idle */
-	l &= ~NOIDLE;		/* remove possible noidle */
-	l |= SMARTIDLE;		/* enable smart idle */
-	/*
-	 * MUSB AUTOIDLE don't work in 3430.
-	 * Workaround by Richard Woodruff/TI
-	 */
-	if (!cpu_is_omap3430())
-		l |= AUTOIDLE;		/* enable auto idle */
-	musb_writel(musb->mregs, OTG_SYSCONFIG, l);
+	status = pm_runtime_get_sync(dev);
+	if (status < 0) {
+		dev_err(dev, "pm_runtime_get_sync FAILED");
+		goto err1;
+	}
 
 	l = musb_readl(musb->mregs, OTG_INTERFSEL);
 
@@ -350,14 +340,58 @@ static int omap2430_musb_init(struct musb *musb)
 	if (status)
 		DBG(1, "notification register failed\n");
 
-	/* check whether cable is already connected */
-	if (musb->xceiv->state ==OTG_STATE_B_IDLE)
-		musb_otg_notifications(&musb->nb, 1,
-					musb->xceiv->gadget);
-
 	setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
 
 	return 0;
+
+err1:
+	pm_runtime_disable(dev);
+	return status;
+}
+
+static void omap2430_musb_enable(struct musb *musb)
+{
+	u8		devctl;
+	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
+	struct device *dev = musb->controller;
+	struct musb_hdrc_platform_data *pdata = dev->platform_data;
+	struct omap_musb_board_data *data = pdata->board_data;
+
+	switch (musb->xceiv->last_event) {
+
+	case USB_EVENT_ID:
+		otg_init(musb->xceiv);
+		if (data->interface_type == MUSB_INTERFACE_UTMI) {
+			devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+			/* start the session */
+			devctl |= MUSB_DEVCTL_SESSION;
+			musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
+			while (musb_readb(musb->mregs, MUSB_DEVCTL) &
+						MUSB_DEVCTL_BDEVICE) {
+				cpu_relax();
+
+				if (time_after(jiffies, timeout)) {
+					dev_err(musb->controller,
+					"configured as A device timeout");
+					break;
+				}
+			}
+		}
+		break;
+
+	case USB_EVENT_VBUS:
+		otg_init(musb->xceiv);
+		break;
+
+	default:
+		break;
+	}
+}
+
+static void omap2430_musb_disable(struct musb *musb)
+{
+	if (musb->xceiv->last_event)
+		otg_shutdown(musb->xceiv);
 }
 
 static int omap2430_musb_exit(struct musb *musb)
@@ -378,6 +412,9 @@ static const struct musb_platform_ops omap2430_ops = {
 	.try_idle	= omap2430_musb_try_idle,
 
 	.set_vbus	= omap2430_musb_set_vbus,
+
+	.enable		= omap2430_musb_enable,
+	.disable	= omap2430_musb_disable,
 };
 
 static u64 omap2430_dmamask = DMA_BIT_MASK(32);
@@ -387,8 +424,6 @@ static int __init omap2430_probe(struct platform_device *pdev)
 	struct musb_hdrc_platform_data	*pdata = pdev->dev.platform_data;
 	struct platform_device		*musb;
 	struct omap2430_glue		*glue;
-	struct clk			*clk;
-
 	int				ret = -ENOMEM;
 
 	glue = kzalloc(sizeof(*glue), GFP_KERNEL);
@@ -403,26 +438,12 @@ static int __init omap2430_probe(struct platform_device *pdev)
 		goto err1;
 	}
 
-	clk = clk_get(&pdev->dev, "ick");
-	if (IS_ERR(clk)) {
-		dev_err(&pdev->dev, "failed to get clock\n");
-		ret = PTR_ERR(clk);
-		goto err2;
-	}
-
-	ret = clk_enable(clk);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to enable clock\n");
-		goto err3;
-	}
-
 	musb->dev.parent		= &pdev->dev;
 	musb->dev.dma_mask		= &omap2430_dmamask;
 	musb->dev.coherent_dma_mask	= omap2430_dmamask;
 
 	glue->dev			= &pdev->dev;
 	glue->musb			= musb;
-	glue->clk			= clk;
 
 	pdata->platform_ops		= &omap2430_ops;
 
@@ -432,28 +453,24 @@ static int __init omap2430_probe(struct platform_device *pdev)
 			pdev->num_resources);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add resources\n");
-		goto err4;
+		goto err2;
 	}
 
 	ret = platform_device_add_data(musb, pdata, sizeof(*pdata));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add platform_data\n");
-		goto err4;
+		goto err2;
 	}
 
 	ret = platform_device_add(musb);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register musb device\n");
-		goto err4;
+		goto err2;
 	}
 
-	return 0;
-
-err4:
-	clk_disable(clk);
+	pm_runtime_enable(&pdev->dev);
 
-err3:
-	clk_put(clk);
+	return 0;
 
 err2:
 	platform_device_put(musb);
@@ -471,61 +488,40 @@ static int __exit omap2430_remove(struct platform_device *pdev)
 
 	platform_device_del(glue->musb);
 	platform_device_put(glue->musb);
-	clk_disable(glue->clk);
-	clk_put(glue->clk);
+	pm_runtime_put(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
 	kfree(glue);
 
 	return 0;
 }
 
 #ifdef CONFIG_PM
-static void omap2430_save_context(struct musb *musb)
-{
-	musb->context.otg_sysconfig = musb_readl(musb->mregs, OTG_SYSCONFIG);
-	musb->context.otg_forcestandby = musb_readl(musb->mregs, OTG_FORCESTDBY);
-}
 
-static void omap2430_restore_context(struct musb *musb)
-{
-	musb_writel(musb->mregs, OTG_SYSCONFIG, musb->context.otg_sysconfig);
-	musb_writel(musb->mregs, OTG_FORCESTDBY, musb->context.otg_forcestandby);
-}
-
-static int omap2430_suspend(struct device *dev)
+static int omap2430_runtime_suspend(struct device *dev)
 {
 	struct omap2430_glue		*glue = dev_get_drvdata(dev);
 	struct musb			*musb = glue_to_musb(glue);
 
 	omap2430_low_level_exit(musb);
 	otg_set_suspend(musb->xceiv, 1);
-	omap2430_save_context(musb);
-	clk_disable(glue->clk);
 
 	return 0;
 }
 
-static int omap2430_resume(struct device *dev)
+static int omap2430_runtime_resume(struct device *dev)
 {
 	struct omap2430_glue		*glue = dev_get_drvdata(dev);
 	struct musb			*musb = glue_to_musb(glue);
-	int				ret;
-
-	ret = clk_enable(glue->clk);
-	if (ret) {
-		dev_err(dev, "faled to enable clock\n");
-		return ret;
-	}
 
 	omap2430_low_level_init(musb);
-	omap2430_restore_context(musb);
 	otg_set_suspend(musb->xceiv, 0);
 
 	return 0;
 }
 
 static struct dev_pm_ops omap2430_pm_ops = {
-	.suspend	= omap2430_suspend,
-	.resume		= omap2430_resume,
+	.runtime_suspend = omap2430_runtime_suspend,
+	.runtime_resume = omap2430_runtime_resume,
 };
 
 #define DEV_PM_OPS	(&omap2430_pm_ops)
diff --git a/drivers/usb/musb/tusb6010_omap.c b/drivers/usb/musb/tusb6010_omap.c
index c061a88..99cb541 100644
--- a/drivers/usb/musb/tusb6010_omap.c
+++ b/drivers/usb/musb/tusb6010_omap.c
@@ -680,7 +680,7 @@ dma_controller_create(struct musb *musb, void __iomem *base)
 
 	tusb_dma = kzalloc(sizeof(struct tusb_omap_dma), GFP_KERNEL);
 	if (!tusb_dma)
-		goto cleanup;
+		goto out;
 
 	tusb_dma->musb = musb;
 	tusb_dma->tbase = musb->ctrl_base;
@@ -721,6 +721,6 @@ dma_controller_create(struct musb *musb, void __iomem *base)
 
 cleanup:
 	dma_controller_destroy(&tusb_dma->controller);
-
+out:
 	return NULL;
 }