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 c292d5c499e7..a914010d9d12 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 e6400be8a0f8..4f0dd2ed3964 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 2fe304611dcf..5c7b321d3959 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 a55354fbccf5..66b7c5e0fb44 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 6dd03f4c5f49..75a542e42fdf 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 0f523d7db57b..5eef4a8847db 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 b46d1877e28e..489104a5ae14 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 bc8badd16897..25cb8b0003b1 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 c061a88f2b0f..99cb541e4ef0 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;
 }