Merge branch 'master' into for-next

43 files changed, 536 insertions, 423 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 8413a567c12d..89d260d6b031 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1596,6 +1596,7 @@ static const struct usb_device_id acm_ids[] = {
 	{ NOKIA_PCSUITE_ACM_INFO(0x00e9), }, /* Nokia 5320 XpressMusic */
 	{ NOKIA_PCSUITE_ACM_INFO(0x0108), }, /* Nokia 5320 XpressMusic 2G */
 	{ NOKIA_PCSUITE_ACM_INFO(0x01f5), }, /* Nokia N97, RM-505 */
+	{ NOKIA_PCSUITE_ACM_INFO(0x02e3), }, /* Nokia 5230, RM-588 */
 
 	/* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
 
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index de98a94d1853..a6bd53ace035 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -1272,8 +1272,7 @@ static int usb_resume_both(struct usb_device *udev, pm_message_t msg)
 
 static void choose_wakeup(struct usb_device *udev, pm_message_t msg)
 {
-	int			w, i;
-	struct usb_interface	*intf;
+	int	w;
 
 	/* Remote wakeup is needed only when we actually go to sleep.
 	 * For things like FREEZE and QUIESCE, if the device is already
@@ -1285,16 +1284,10 @@ static void choose_wakeup(struct usb_device *udev, pm_message_t msg)
 		return;
 	}
 
-	/* If remote wakeup is permitted, see whether any interface drivers
+	/* Enable remote wakeup if it is allowed, even if no interface drivers
 	 * actually want it.
 	 */
-	w = 0;
-	if (device_may_wakeup(&udev->dev) && udev->actconfig) {
-		for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
-			intf = udev->actconfig->interface[i];
-			w |= intf->needs_remote_wakeup;
-		}
-	}
+	w = device_may_wakeup(&udev->dev);
 
 	/* If the device is autosuspended with the wrong wakeup setting,
 	 * autoresume now so the setting can be changed.
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 83e7bbbe97fa..70cccc75a362 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -1982,6 +1982,8 @@ static int hub_port_wait_reset(struct usb_hub *hub, int port1,
 		    (portstatus & USB_PORT_STAT_ENABLE)) {
 			if (hub_is_wusb(hub))
 				udev->speed = USB_SPEED_WIRELESS;
+			else if (portstatus & USB_PORT_STAT_SUPER_SPEED)
+				udev->speed = USB_SPEED_SUPER;
 			else if (portstatus & USB_PORT_STAT_HIGH_SPEED)
 				udev->speed = USB_SPEED_HIGH;
 			else if (portstatus & USB_PORT_STAT_LOW_SPEED)
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index a73e08fdab36..fd4c36ea5e46 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -416,8 +416,11 @@ int usb_sg_init(struct usb_sg_request *io, struct usb_device *dev,
 			/* A length of zero means transfer the whole sg list */
 			len = length;
 			if (len == 0) {
-				for_each_sg(sg, sg, nents, i)
-					len += sg->length;
+				struct scatterlist	*sg2;
+				int			j;
+
+				for_each_sg(sg, sg2, nents, j)
+					len += sg2->length;
 			}
 		} else {
 			/*
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index f22d03df8b17..db99c084df92 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -41,6 +41,10 @@ static const struct usb_device_id usb_quirk_list[] = {
 	/* Philips PSC805 audio device */
 	{ USB_DEVICE(0x0471, 0x0155), .driver_info = USB_QUIRK_RESET_RESUME },
 
+	/* Artisman Watchdog Dongle */
+	{ USB_DEVICE(0x04b4, 0x0526), .driver_info =
+			USB_QUIRK_CONFIG_INTF_STRINGS },
+
 	/* Roland SC-8820 */
 	{ USB_DEVICE(0x0582, 0x0007), .driver_info = USB_QUIRK_RESET_RESUME },
 
@@ -64,6 +68,9 @@ static const struct usb_device_id usb_quirk_list[] = {
 	/* X-Rite/Gretag-Macbeth Eye-One Pro display colorimeter */
 	{ USB_DEVICE(0x0971, 0x2000), .driver_info = USB_QUIRK_NO_SET_INTF },
 
+	/* Broadcom BCM92035DGROM BT dongle */
+	{ USB_DEVICE(0x0a5c, 0x2021), .driver_info = USB_QUIRK_RESET_RESUME },
+
 	/* Action Semiconductor flash disk */
 	{ USB_DEVICE(0x10d6, 0x2200), .driver_info =
 			USB_QUIRK_STRING_FETCH_255 },
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index eaa79c8a9b8c..93ead19507b6 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -76,11 +76,12 @@
 static const char driver_name [] = "at91_udc";
 static const char ep0name[] = "ep0";
 
+#define VBUS_POLL_TIMEOUT	msecs_to_jiffies(1000)
 
-#define at91_udp_read(dev, reg) \
-	__raw_readl((dev)->udp_baseaddr + (reg))
-#define at91_udp_write(dev, reg, val) \
-	__raw_writel((val), (dev)->udp_baseaddr + (reg))
+#define at91_udp_read(udc, reg) \
+	__raw_readl((udc)->udp_baseaddr + (reg))
+#define at91_udp_write(udc, reg, val) \
+	__raw_writel((val), (udc)->udp_baseaddr + (reg))
 
 /*-------------------------------------------------------------------------*/
 
@@ -102,8 +103,9 @@ static void proc_ep_show(struct seq_file *s, struct at91_ep *ep)
 	u32			csr;
 	struct at91_request	*req;
 	unsigned long	flags;
+	struct at91_udc	*udc = ep->udc;
 
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 
 	csr = __raw_readl(ep->creg);
 
@@ -147,7 +149,7 @@ static void proc_ep_show(struct seq_file *s, struct at91_ep *ep)
 				&req->req, length,
 				req->req.length, req->req.buf);
 	}
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 }
 
 static void proc_irq_show(struct seq_file *s, const char *label, u32 mask)
@@ -272,7 +274,9 @@ static void done(struct at91_ep *ep, struct at91_request *req, int status)
 		VDBG("%s done %p, status %d\n", ep->ep.name, req, status);
 
 	ep->stopped = 1;
+	spin_unlock(&udc->lock);
 	req->req.complete(&ep->ep, &req->req);
+	spin_lock(&udc->lock);
 	ep->stopped = stopped;
 
 	/* ep0 is always ready; other endpoints need a non-empty queue */
@@ -472,7 +476,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
 				const struct usb_endpoint_descriptor *desc)
 {
 	struct at91_ep	*ep = container_of(_ep, struct at91_ep, ep);
-	struct at91_udc	*dev = ep->udc;
+	struct at91_udc	*udc = ep->udc;
 	u16		maxpacket;
 	u32		tmp;
 	unsigned long	flags;
@@ -487,7 +491,7 @@ static int at91_ep_enable(struct usb_ep *_ep,
 		return -EINVAL;
 	}
 
-	if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
+	if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) {
 		DBG("bogus device state\n");
 		return -ESHUTDOWN;
 	}
@@ -521,7 +525,7 @@ bogus_max:
 	}
 
 ok:
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 
 	/* initialize endpoint to match this descriptor */
 	ep->is_in = usb_endpoint_dir_in(desc);
@@ -540,10 +544,10 @@ ok:
 	 * reset/init endpoint fifo.  NOTE:  leaves fifo_bank alone,
 	 * since endpoint resets don't reset hw pingpong state.
 	 */
-	at91_udp_write(dev, AT91_UDP_RST_EP, ep->int_mask);
-	at91_udp_write(dev, AT91_UDP_RST_EP, 0);
+	at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask);
+	at91_udp_write(udc, AT91_UDP_RST_EP, 0);
 
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return 0;
 }
 
@@ -556,7 +560,7 @@ static int at91_ep_disable (struct usb_ep * _ep)
 	if (ep == &ep->udc->ep[0])
 		return -EINVAL;
 
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 
 	nuke(ep, -ESHUTDOWN);
 
@@ -571,7 +575,7 @@ static int at91_ep_disable (struct usb_ep * _ep)
 		__raw_writel(0, ep->creg);
 	}
 
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return 0;
 }
 
@@ -607,7 +611,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
 {
 	struct at91_request	*req;
 	struct at91_ep		*ep;
-	struct at91_udc		*dev;
+	struct at91_udc		*udc;
 	int			status;
 	unsigned long		flags;
 
@@ -625,9 +629,9 @@ static int at91_ep_queue(struct usb_ep *_ep,
 		return -EINVAL;
 	}
 
-	dev = ep->udc;
+	udc = ep->udc;
 
-	if (!dev || !dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
+	if (!udc || !udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) {
 		DBG("invalid device\n");
 		return -EINVAL;
 	}
@@ -635,7 +639,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
 	_req->status = -EINPROGRESS;
 	_req->actual = 0;
 
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 
 	/* try to kickstart any empty and idle queue */
 	if (list_empty(&ep->queue) && !ep->stopped) {
@@ -653,7 +657,7 @@ static int at91_ep_queue(struct usb_ep *_ep,
 		if (is_ep0) {
 			u32	tmp;
 
-			if (!dev->req_pending) {
+			if (!udc->req_pending) {
 				status = -EINVAL;
 				goto done;
 			}
@@ -662,11 +666,11 @@ static int at91_ep_queue(struct usb_ep *_ep,
 			 * defer changing CONFG until after the gadget driver
 			 * reconfigures the endpoints.
 			 */
-			if (dev->wait_for_config_ack) {
-				tmp = at91_udp_read(dev, AT91_UDP_GLB_STAT);
+			if (udc->wait_for_config_ack) {
+				tmp = at91_udp_read(udc, AT91_UDP_GLB_STAT);
 				tmp ^= AT91_UDP_CONFG;
 				VDBG("toggle config\n");
-				at91_udp_write(dev, AT91_UDP_GLB_STAT, tmp);
+				at91_udp_write(udc, AT91_UDP_GLB_STAT, tmp);
 			}
 			if (req->req.length == 0) {
 ep0_in_status:
@@ -676,7 +680,7 @@ ep0_in_status:
 				tmp &= ~SET_FX;
 				tmp |= CLR_FX | AT91_UDP_TXPKTRDY;
 				__raw_writel(tmp, ep->creg);
-				dev->req_pending = 0;
+				udc->req_pending = 0;
 				goto done;
 			}
 		}
@@ -695,31 +699,40 @@ ep0_in_status:
 
 	if (req && !status) {
 		list_add_tail (&req->queue, &ep->queue);
-		at91_udp_write(dev, AT91_UDP_IER, ep->int_mask);
+		at91_udp_write(udc, AT91_UDP_IER, ep->int_mask);
 	}
 done:
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return (status < 0) ? status : 0;
 }
 
 static int at91_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
 {
-	struct at91_ep	*ep;
+	struct at91_ep		*ep;
 	struct at91_request	*req;
+	unsigned long		flags;
+	struct at91_udc		*udc;
 
 	ep = container_of(_ep, struct at91_ep, ep);
 	if (!_ep || ep->ep.name == ep0name)
 		return -EINVAL;
 
+	udc = ep->udc;
+
+	spin_lock_irqsave(&udc->lock, flags);
+
 	/* make sure it's actually queued on this endpoint */
 	list_for_each_entry (req, &ep->queue, queue) {
 		if (&req->req == _req)
 			break;
 	}
-	if (&req->req != _req)
+	if (&req->req != _req) {
+		spin_unlock_irqrestore(&udc->lock, flags);
 		return -EINVAL;
+	}
 
 	done(ep, req, -ECONNRESET);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return 0;
 }
 
@@ -736,7 +749,7 @@ static int at91_ep_set_halt(struct usb_ep *_ep, int value)
 		return -EINVAL;
 
 	creg = ep->creg;
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 
 	csr = __raw_readl(creg);
 
@@ -761,7 +774,7 @@ static int at91_ep_set_halt(struct usb_ep *_ep, int value)
 		__raw_writel(csr, creg);
 	}
 
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return status;
 }
 
@@ -795,7 +808,7 @@ static int at91_wakeup(struct usb_gadget *gadget)
 	unsigned long	flags;
 
 	DBG("%s\n", __func__ );
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 
 	if (!udc->clocked || !udc->suspended)
 		goto done;
@@ -809,7 +822,7 @@ static int at91_wakeup(struct usb_gadget *gadget)
 	at91_udp_write(udc, AT91_UDP_GLB_STAT, glbstate);
 
 done:
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return status;
 }
 
@@ -851,8 +864,11 @@ static void stop_activity(struct at91_udc *udc)
 		ep->stopped = 1;
 		nuke(ep, -ESHUTDOWN);
 	}
-	if (driver)
+	if (driver) {
+		spin_unlock(&udc->lock);
 		driver->disconnect(&udc->gadget);
+		spin_lock(&udc->lock);
+	}
 
 	udc_reinit(udc);
 }
@@ -935,13 +951,13 @@ static int at91_vbus_session(struct usb_gadget *gadget, int is_active)
 	unsigned long	flags;
 
 	// VDBG("vbus %s\n", is_active ? "on" : "off");
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 	udc->vbus = (is_active != 0);
 	if (udc->driver)
 		pullup(udc, is_active);
 	else
 		pullup(udc, 0);
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return 0;
 }
 
@@ -950,10 +966,10 @@ static int at91_pullup(struct usb_gadget *gadget, int is_on)
 	struct at91_udc	*udc = to_udc(gadget);
 	unsigned long	flags;
 
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 	udc->enabled = is_on = !!is_on;
 	pullup(udc, is_on);
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return 0;
 }
 
@@ -962,9 +978,9 @@ static int at91_set_selfpowered(struct usb_gadget *gadget, int is_on)
 	struct at91_udc	*udc = to_udc(gadget);
 	unsigned long	flags;
 
-	local_irq_save(flags);
+	spin_lock_irqsave(&udc->lock, flags);
 	udc->selfpowered = (is_on != 0);
-	local_irq_restore(flags);
+	spin_unlock_irqrestore(&udc->lock, flags);
 	return 0;
 }
 
@@ -1226,8 +1242,11 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr)
 #undef w_length
 
 	/* pass request up to the gadget driver */
-	if (udc->driver)
+	if (udc->driver) {
+		spin_unlock(&udc->lock);
 		status = udc->driver->setup(&udc->gadget, &pkt.r);
+		spin_lock(&udc->lock);
+	}
 	else
 		status = -ENODEV;
 	if (status < 0) {
@@ -1378,6 +1397,9 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
 	struct at91_udc		*udc = _udc;
 	u32			rescans = 5;
 	int			disable_clock = 0;
+	unsigned long		flags;
+
+	spin_lock_irqsave(&udc->lock, flags);
 
 	if (!udc->clocked) {
 		clk_on(udc);
@@ -1433,8 +1455,11 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
 			 * and then into standby to avoid drawing more than
 			 * 500uA power (2500uA for some high-power configs).
 			 */
-			if (udc->driver && udc->driver->suspend)
+			if (udc->driver && udc->driver->suspend) {
+				spin_unlock(&udc->lock);
 				udc->driver->suspend(&udc->gadget);
+				spin_lock(&udc->lock);
+			}
 
 		/* host initiated resume */
 		} else if (status & AT91_UDP_RXRSM) {
@@ -1451,8 +1476,11 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
 			 * would normally want to switch out of slow clock
 			 * mode into normal mode.
 			 */
-			if (udc->driver && udc->driver->resume)
+			if (udc->driver && udc->driver->resume) {
+				spin_unlock(&udc->lock);
 				udc->driver->resume(&udc->gadget);
+				spin_lock(&udc->lock);
+			}
 
 		/* endpoint IRQs are cleared by handling them */
 		} else {
@@ -1474,6 +1502,8 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc)
 	if (disable_clock)
 		clk_off(udc);
 
+	spin_unlock_irqrestore(&udc->lock, flags);
+
 	return IRQ_HANDLED;
 }
 
@@ -1556,24 +1586,53 @@ static struct at91_udc controller = {
 	/* ep6 and ep7 are also reserved (custom silicon might use them) */
 };
 
+static void at91_vbus_update(struct at91_udc *udc, unsigned value)
+{
+	value ^= udc->board.vbus_active_low;
+	if (value != udc->vbus)
+		at91_vbus_session(&udc->gadget, value);
+}
+
 static irqreturn_t at91_vbus_irq(int irq, void *_udc)
 {
 	struct at91_udc	*udc = _udc;
-	unsigned	value;
 
 	/* vbus needs at least brief debouncing */
 	udelay(10);
-	value = gpio_get_value(udc->board.vbus_pin);
-	if (value != udc->vbus)
-		at91_vbus_session(&udc->gadget, value);
+	at91_vbus_update(udc, gpio_get_value(udc->board.vbus_pin));
 
 	return IRQ_HANDLED;
 }
 
+static void at91_vbus_timer_work(struct work_struct *work)
+{
+	struct at91_udc *udc = container_of(work, struct at91_udc,
+					    vbus_timer_work);
+
+	at91_vbus_update(udc, gpio_get_value_cansleep(udc->board.vbus_pin));
+
+	if (!timer_pending(&udc->vbus_timer))
+		mod_timer(&udc->vbus_timer, jiffies + VBUS_POLL_TIMEOUT);
+}
+
+static void at91_vbus_timer(unsigned long data)
+{
+	struct at91_udc *udc = (struct at91_udc *)data;
+
+	/*
+	 * If we are polling vbus it is likely that the gpio is on an
+	 * bus such as i2c or spi which may sleep, so schedule some work
+	 * to read the vbus gpio
+	 */
+	if (!work_pending(&udc->vbus_timer_work))
+		schedule_work(&udc->vbus_timer_work);
+}
+
 int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 {
 	struct at91_udc	*udc = &controller;
 	int		retval;
+	unsigned long	flags;
 
 	if (!driver
 			|| driver->speed < USB_SPEED_FULL
@@ -1605,9 +1664,9 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver)
 		return retval;
 	}
 
-	local_irq_disable();
+	spin_lock_irqsave(&udc->lock, flags);
 	pullup(udc, 1);
-	local_irq_enable();
+	spin_unlock_irqrestore(&udc->lock, flags);
 
 	DBG("bound to %s\n", driver->driver.name);
 	return 0;
@@ -1617,15 +1676,16 @@ EXPORT_SYMBOL (usb_gadget_register_driver);
 int usb_gadget_unregister_driver (struct usb_gadget_driver *driver)
 {
 	struct at91_udc *udc = &controller;
+	unsigned long	flags;
 
 	if (!driver || driver != udc->driver || !driver->unbind)
 		return -EINVAL;
 
-	local_irq_disable();
+	spin_lock_irqsave(&udc->lock, flags);
 	udc->enabled = 0;
 	at91_udp_write(udc, AT91_UDP_IDR, ~0);
 	pullup(udc, 0);
-	local_irq_enable();
+	spin_unlock_irqrestore(&udc->lock, flags);
 
 	driver->unbind(&udc->gadget);
 	udc->gadget.dev.driver = NULL;
@@ -1641,8 +1701,13 @@ EXPORT_SYMBOL (usb_gadget_unregister_driver);
 
 static void at91udc_shutdown(struct platform_device *dev)
 {
+	struct at91_udc *udc = platform_get_drvdata(dev);
+	unsigned long	flags;
+
 	/* force disconnect on reboot */
+	spin_lock_irqsave(&udc->lock, flags);
 	pullup(platform_get_drvdata(dev), 0);
+	spin_unlock_irqrestore(&udc->lock, flags);
 }
 
 static int __init at91udc_probe(struct platform_device *pdev)
@@ -1683,6 +1748,7 @@ static int __init at91udc_probe(struct platform_device *pdev)
 	udc->board = *(struct at91_udc_data *) dev->platform_data;
 	udc->pdev = pdev;
 	udc->enabled = 0;
+	spin_lock_init(&udc->lock);
 
 	/* rm9200 needs manual D+ pullup; off by default */
 	if (cpu_is_at91rm9200()) {
@@ -1763,13 +1829,23 @@ static int __init at91udc_probe(struct platform_device *pdev)
 		 * Get the initial state of VBUS - we cannot expect
 		 * a pending interrupt.
 		 */
-		udc->vbus = gpio_get_value(udc->board.vbus_pin);
-		if (request_irq(udc->board.vbus_pin, at91_vbus_irq,
-				IRQF_DISABLED, driver_name, udc)) {
-			DBG("request vbus irq %d failed\n",
-					udc->board.vbus_pin);
-			retval = -EBUSY;
-			goto fail3;
+		udc->vbus = gpio_get_value_cansleep(udc->board.vbus_pin) ^
+			udc->board.vbus_active_low;
+
+		if (udc->board.vbus_polled) {
+			INIT_WORK(&udc->vbus_timer_work, at91_vbus_timer_work);
+			setup_timer(&udc->vbus_timer, at91_vbus_timer,
+				    (unsigned long)udc);
+			mod_timer(&udc->vbus_timer,
+				  jiffies + VBUS_POLL_TIMEOUT);
+		} else {
+			if (request_irq(udc->board.vbus_pin, at91_vbus_irq,
+					IRQF_DISABLED, driver_name, udc)) {
+				DBG("request vbus irq %d failed\n",
+				    udc->board.vbus_pin);
+				retval = -EBUSY;
+				goto fail3;
+			}
 		}
 	} else {
 		DBG("no VBUS detection, assuming always-on\n");
@@ -1804,13 +1880,16 @@ static int __exit at91udc_remove(struct platform_device *pdev)
 {
 	struct at91_udc *udc = platform_get_drvdata(pdev);
 	struct resource *res;
+	unsigned long	flags;
 
 	DBG("remove\n");
 
 	if (udc->driver)
 		return -EBUSY;
 
+	spin_lock_irqsave(&udc->lock, flags);
 	pullup(udc, 0);
+	spin_unlock_irqrestore(&udc->lock, flags);
 
 	device_init_wakeup(&pdev->dev, 0);
 	remove_debug_file(udc);
@@ -1840,6 +1919,7 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
 {
 	struct at91_udc *udc = platform_get_drvdata(pdev);
 	int		wake = udc->driver && device_may_wakeup(&pdev->dev);
+	unsigned long	flags;
 
 	/* Unless we can act normally to the host (letting it wake us up
 	 * whenever it has work for us) force disconnect.  Wakeup requires
@@ -1849,13 +1929,15 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
 	if ((!udc->suspended && udc->addr)
 			|| !wake
 			|| at91_suspend_entering_slow_clock()) {
+		spin_lock_irqsave(&udc->lock, flags);
 		pullup(udc, 0);
 		wake = 0;
+		spin_unlock_irqrestore(&udc->lock, flags);
 	} else
 		enable_irq_wake(udc->udp_irq);
 
 	udc->active_suspend = wake;
-	if (udc->board.vbus_pin > 0 && wake)
+	if (udc->board.vbus_pin > 0 && !udc->board.vbus_polled && wake)
 		enable_irq_wake(udc->board.vbus_pin);
 	return 0;
 }
@@ -1863,15 +1945,20 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg)
 static int at91udc_resume(struct platform_device *pdev)
 {
 	struct at91_udc *udc = platform_get_drvdata(pdev);
+	unsigned long	flags;
 
-	if (udc->board.vbus_pin > 0 && udc->active_suspend)
+	if (udc->board.vbus_pin > 0 && !udc->board.vbus_polled &&
+	    udc->active_suspend)
 		disable_irq_wake(udc->board.vbus_pin);
 
 	/* maybe reconnect to host; if so, clocks on */
 	if (udc->active_suspend)
 		disable_irq_wake(udc->udp_irq);
-	else
+	else {
+		spin_lock_irqsave(&udc->lock, flags);
 		pullup(udc, 1);
+		spin_unlock_irqrestore(&udc->lock, flags);
+	}
 	return 0;
 }
 #else
diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h
index c65d62295890..108ca54f9092 100644
--- a/drivers/usb/gadget/at91_udc.h
+++ b/drivers/usb/gadget/at91_udc.h
@@ -144,6 +144,9 @@ struct at91_udc {
 	struct proc_dir_entry		*pde;
 	void __iomem			*udp_baseaddr;
 	int				udp_irq;
+	spinlock_t			lock;
+	struct timer_list		vbus_timer;
+	struct work_struct		vbus_timer_work;
 };
 
 static inline struct at91_udc *to_udc(struct usb_gadget *g)
diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index 38226e9a371d..95dd4662d6a8 100644
--- a/drivers/usb/gadget/f_eem.c
+++ b/drivers/usb/gadget/f_eem.c
@@ -469,8 +469,7 @@ static int eem_unwrap(struct gether *port,
 				crc = get_unaligned_le32(skb->data + len
 							- ETH_FCS_LEN);
 				crc2 = ~crc32_le(~0,
-						skb->data,
-						skb->len - ETH_FCS_LEN);
+						skb->data, len - ETH_FCS_LEN);
 			} else {
 				crc = get_unaligned_be32(skb->data + len
 							- ETH_FCS_LEN);
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c
index d69eccf5f197..2aaa0f75c6cf 100644
--- a/drivers/usb/gadget/f_fs.c
+++ b/drivers/usb/gadget/f_fs.c
@@ -136,7 +136,7 @@ struct ffs_data {
 	 * handling setup requests immidiatelly user space may be so
 	 * slow that another setup will be sent to the gadget but this
 	 * time not to us but another function and then there could be
-	 * a race.  Is taht the case? Or maybe we can use cdev->req
+	 * a race.  Is that the case? Or maybe we can use cdev->req
 	 * after all, maybe we just need some spinlock for that? */
 	struct usb_request		*ep0req;		/* P: mutex */
 	struct completion		ep0req_completion;	/* P: mutex */
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 7d05a0be5c60..4ce899c9b165 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -321,8 +321,8 @@ struct fsg_dev;
 /* Data shared by all the FSG instances. */
 struct fsg_common {
 	struct usb_gadget	*gadget;
-	struct fsg_dev		*fsg;
-	struct fsg_dev		*prev_fsg;
+	struct fsg_dev		*fsg, *new_fsg;
+	wait_queue_head_t	fsg_wait;
 
 	/* filesem protects: backing files in use */
 	struct rw_semaphore	filesem;
@@ -351,7 +351,6 @@ struct fsg_common {
 	enum fsg_state		state;		/* For exception handling */
 	unsigned int		exception_req_tag;
 
-	u8			config, new_config;
 	enum data_direction	data_dir;
 	u32			data_size;
 	u32			data_size_from_cmnd;
@@ -595,7 +594,7 @@ static int fsg_setup(struct usb_function *f,
 	u16			w_value = le16_to_cpu(ctrl->wValue);
 	u16			w_length = le16_to_cpu(ctrl->wLength);
 
-	if (!fsg->common->config)
+	if (!fsg_is_set(fsg->common))
 		return -EOPNOTSUPP;
 
 	switch (ctrl->bRequest) {
@@ -2303,24 +2302,20 @@ static int alloc_request(struct fsg_common *common, struct usb_ep *ep,
 	return -ENOMEM;
 }
 
-/*
- * Reset interface setting and re-init endpoint state (toggle etc).
- * Call with altsetting < 0 to disable the interface.  The only other
- * available altsetting is 0, which enables the interface.
- */
-static int do_set_interface(struct fsg_common *common, int altsetting)
+/* Reset interface setting and re-init endpoint state (toggle etc). */
+static int do_set_interface(struct fsg_common *common, struct fsg_dev *new_fsg)
 {
-	int	rc = 0;
-	int	i;
-	const struct usb_endpoint_descriptor	*d;
+	const struct usb_endpoint_descriptor *d;
+	struct fsg_dev *fsg;
+	int i, rc = 0;
 
 	if (common->running)
 		DBG(common, "reset interface\n");
 
 reset:
 	/* Deallocate the requests */
-	if (common->prev_fsg) {
-		struct fsg_dev *fsg = common->prev_fsg;
+	if (common->fsg) {
+		fsg = common->fsg;
 
 		for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
 			struct fsg_buffhd *bh = &common->buffhds[i];
@@ -2345,88 +2340,53 @@ reset:
 			fsg->bulk_out_enabled = 0;
 		}
 
-		common->prev_fsg = 0;
+		common->fsg = NULL;
+		wake_up(&common->fsg_wait);
 	}
 
 	common->running = 0;
-	if (altsetting < 0 || rc != 0)
+	if (!new_fsg || rc)
 		return rc;
 
-	DBG(common, "set interface %d\n", altsetting);
+	common->fsg = new_fsg;
+	fsg = common->fsg;
 
-	if (fsg_is_set(common)) {
-		struct fsg_dev *fsg = common->fsg;
-		common->prev_fsg = common->fsg;
+	/* Enable the endpoints */
+	d = fsg_ep_desc(common->gadget,
+			&fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc);
+	rc = enable_endpoint(common, fsg->bulk_in, d);
+	if (rc)
+		goto reset;
+	fsg->bulk_in_enabled = 1;
+
+	d = fsg_ep_desc(common->gadget,
+			&fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc);
+	rc = enable_endpoint(common, fsg->bulk_out, d);
+	if (rc)
+		goto reset;
+	fsg->bulk_out_enabled = 1;
+	common->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize);
+	clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
 
-		/* Enable the endpoints */
-		d = fsg_ep_desc(common->gadget,
-				&fsg_fs_bulk_in_desc, &fsg_hs_bulk_in_desc);
-		rc = enable_endpoint(common, fsg->bulk_in, d);
+	/* Allocate the requests */
+	for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
+		struct fsg_buffhd	*bh = &common->buffhds[i];
+
+		rc = alloc_request(common, fsg->bulk_in, &bh->inreq);
 		if (rc)
 			goto reset;
-		fsg->bulk_in_enabled = 1;
-
-		d = fsg_ep_desc(common->gadget,
-				&fsg_fs_bulk_out_desc, &fsg_hs_bulk_out_desc);
-		rc = enable_endpoint(common, fsg->bulk_out, d);
+		rc = alloc_request(common, fsg->bulk_out, &bh->outreq);
 		if (rc)
 			goto reset;
-		fsg->bulk_out_enabled = 1;
-		common->bulk_out_maxpacket = le16_to_cpu(d->wMaxPacketSize);
-		clear_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
-
-		/* Allocate the requests */
-		for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
-			struct fsg_buffhd	*bh = &common->buffhds[i];
-
-			rc = alloc_request(common, fsg->bulk_in, &bh->inreq);
-			if (rc)
-				goto reset;
-			rc = alloc_request(common, fsg->bulk_out, &bh->outreq);
-			if (rc)
-				goto reset;
-			bh->inreq->buf = bh->outreq->buf = bh->buf;
-			bh->inreq->context = bh->outreq->context = bh;
-			bh->inreq->complete = bulk_in_complete;
-			bh->outreq->complete = bulk_out_complete;
-		}
-
-		common->running = 1;
-		for (i = 0; i < common->nluns; ++i)
-			common->luns[i].unit_attention_data = SS_RESET_OCCURRED;
-		return rc;
-	} else {
-		return -EIO;
-	}
-}
-
-
-/*
- * Change our operational configuration.  This code must agree with the code
- * that returns config descriptors, and with interface altsetting code.
- *
- * It's also responsible for power management interactions.  Some
- * configurations might not work with our current power sources.
- * For now we just assume the gadget is always self-powered.
- */
-static int do_set_config(struct fsg_common *common, u8 new_config)
-{
-	int	rc = 0;
-
-	/* Disable the single interface */
-	if (common->config != 0) {
-		DBG(common, "reset config\n");
-		common->config = 0;
-		rc = do_set_interface(common, -1);
+		bh->inreq->buf = bh->outreq->buf = bh->buf;
+		bh->inreq->context = bh->outreq->context = bh;
+		bh->inreq->complete = bulk_in_complete;
+		bh->outreq->complete = bulk_out_complete;
 	}
 
-	/* Enable the interface */
-	if (new_config != 0) {
-		common->config = new_config;
-		rc = do_set_interface(common, 0);
-		if (rc != 0)
-			common->config = 0;	/* Reset on errors */
-	}
+	common->running = 1;
+	for (i = 0; i < common->nluns; ++i)
+		common->luns[i].unit_attention_data = SS_RESET_OCCURRED;
 	return rc;
 }
 
@@ -2437,9 +2397,7 @@ static int do_set_config(struct fsg_common *common, u8 new_config)
 static int fsg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 {
 	struct fsg_dev *fsg = fsg_from_func(f);
-	fsg->common->prev_fsg = fsg->common->fsg;
-	fsg->common->fsg = fsg;
-	fsg->common->new_config = 1;
+	fsg->common->new_fsg = fsg;
 	raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);
 	return 0;
 }
@@ -2447,9 +2405,7 @@ static int fsg_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 static void fsg_disable(struct usb_function *f)
 {
 	struct fsg_dev *fsg = fsg_from_func(f);
-	fsg->common->prev_fsg = fsg->common->fsg;
-	fsg->common->fsg = fsg;
-	fsg->common->new_config = 0;
+	fsg->common->new_fsg = NULL;
 	raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);
 }
 
@@ -2459,19 +2415,17 @@ static void fsg_disable(struct usb_function *f)
 static void handle_exception(struct fsg_common *common)
 {
 	siginfo_t		info;
-	int			sig;
 	int			i;
 	struct fsg_buffhd	*bh;
 	enum fsg_state		old_state;
-	u8			new_config;
 	struct fsg_lun		*curlun;
 	unsigned int		exception_req_tag;
-	int			rc;
 
 	/* Clear the existing signals.  Anything but SIGUSR1 is converted
 	 * into a high-priority EXIT exception. */
 	for (;;) {
-		sig = dequeue_signal_lock(current, &current->blocked, &info);
+		int sig =
+			dequeue_signal_lock(current, &current->blocked, &info);
 		if (!sig)
 			break;
 		if (sig != SIGUSR1) {
@@ -2482,7 +2436,7 @@ static void handle_exception(struct fsg_common *common)
 	}
 
 	/* Cancel all the pending transfers */
-	if (fsg_is_set(common)) {
+	if (likely(common->fsg)) {
 		for (i = 0; i < FSG_NUM_BUFFERS; ++i) {
 			bh = &common->buffhds[i];
 			if (bh->inreq_busy)
@@ -2523,7 +2477,6 @@ static void handle_exception(struct fsg_common *common)
 	common->next_buffhd_to_fill = &common->buffhds[0];
 	common->next_buffhd_to_drain = &common->buffhds[0];
 	exception_req_tag = common->exception_req_tag;
-	new_config = common->new_config;
 	old_state = common->state;
 
 	if (old_state == FSG_STATE_ABORT_BULK_OUT)
@@ -2573,12 +2526,12 @@ static void handle_exception(struct fsg_common *common)
 		break;
 
 	case FSG_STATE_CONFIG_CHANGE:
-		rc = do_set_config(common, new_config);
+		do_set_interface(common, common->new_fsg);
 		break;
 
 	case FSG_STATE_EXIT:
 	case FSG_STATE_TERMINATED:
-		do_set_config(common, 0);		/* Free resources */
+		do_set_interface(common, NULL);		/* Free resources */
 		spin_lock_irq(&common->lock);
 		common->state = FSG_STATE_TERMINATED;	/* Stop the thread */
 		spin_unlock_irq(&common->lock);
@@ -2863,6 +2816,7 @@ buffhds_first_it:
 		goto error_release;
 	}
 	init_completion(&common->thread_notifier);
+	init_waitqueue_head(&common->fsg_wait);
 #undef OR
 
 
@@ -2957,9 +2911,17 @@ static void fsg_common_release(struct kref *ref)
 static void fsg_unbind(struct usb_configuration *c, struct usb_function *f)
 {
 	struct fsg_dev		*fsg = fsg_from_func(f);
+	struct fsg_common	*common = fsg->common;
 
 	DBG(fsg, "unbind\n");
-	fsg_common_put(fsg->common);
+	if (fsg->common->fsg == fsg) {
+		fsg->common->new_fsg = NULL;
+		raise_exception(fsg->common, FSG_STATE_CONFIG_CHANGE);
+		/* FIXME: make interruptible or killable somehow? */
+		wait_event(common->fsg_wait, common->fsg != fsg);
+	}
+
+	fsg_common_put(common);
 	usb_free_descriptors(fsg->function.descriptors);
 	usb_free_descriptors(fsg->function.hs_descriptors);
 	kfree(fsg);
@@ -2970,7 +2932,6 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
 {
 	struct fsg_dev		*fsg = fsg_from_func(f);
 	struct usb_gadget	*gadget = c->cdev->gadget;
-	int			rc;
 	int			i;
 	struct usb_ep		*ep;
 
@@ -2996,6 +2957,11 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
 	ep->driver_data = fsg->common;	/* claim the endpoint */
 	fsg->bulk_out = ep;
 
+	/* Copy descriptors */
+	f->descriptors = usb_copy_descriptors(fsg_fs_function);
+	if (unlikely(!f->descriptors))
+		return -ENOMEM;
+
 	if (gadget_is_dualspeed(gadget)) {
 		/* Assume endpoint addresses are the same for both speeds */
 		fsg_hs_bulk_in_desc.bEndpointAddress =
@@ -3003,16 +2969,17 @@ static int fsg_bind(struct usb_configuration *c, struct usb_function *f)
 		fsg_hs_bulk_out_desc.bEndpointAddress =
 			fsg_fs_bulk_out_desc.bEndpointAddress;
 		f->hs_descriptors = usb_copy_descriptors(fsg_hs_function);
-		if (unlikely(!f->hs_descriptors))
+		if (unlikely(!f->hs_descriptors)) {
+			usb_free_descriptors(f->descriptors);
 			return -ENOMEM;
+		}
 	}
 
 	return 0;
 
 autoconf_fail:
 	ERROR(fsg, "unable to autoconfigure all endpoints\n");
-	rc = -ENOTSUPP;
-	return rc;
+	return -ENOTSUPP;
 }
 
 
@@ -3036,11 +3003,6 @@ static int fsg_add(struct usb_composite_dev *cdev,
 
 	fsg->function.name        = FSG_DRIVER_DESC;
 	fsg->function.strings     = fsg_strings_array;
-	fsg->function.descriptors = usb_copy_descriptors(fsg_fs_function);
-	if (unlikely(!fsg->function.descriptors)) {
-		rc = -ENOMEM;
-		goto error_free_fsg;
-	}
 	fsg->function.bind        = fsg_bind;
 	fsg->function.unbind      = fsg_unbind;
 	fsg->function.setup       = fsg_setup;
@@ -3056,19 +3018,9 @@ static int fsg_add(struct usb_composite_dev *cdev,
 
 	rc = usb_add_function(c, &fsg->function);
 	if (unlikely(rc))
-		goto error_free_all;
-
-	fsg_common_get(fsg->common);
-	return 0;
-
-error_free_all:
-	usb_free_descriptors(fsg->function.descriptors);
-	/* fsg_bind() might have copied those; or maybe not? who cares
-	 * -- free it just in case. */
-	usb_free_descriptors(fsg->function.hs_descriptors);
-error_free_fsg:
-	kfree(fsg);
-
+		kfree(fsg);
+	else
+		fsg_common_get(fsg->common);
 	return rc;
 }
 
diff --git a/drivers/usb/gadget/f_uvc.c b/drivers/usb/gadget/f_uvc.c
index fc2611f8b326..dbe6db0184fd 100644
--- a/drivers/usb/gadget/f_uvc.c
+++ b/drivers/usb/gadget/f_uvc.c
@@ -28,7 +28,7 @@
 
 #include "uvc.h"
 
-unsigned int uvc_trace_param;
+unsigned int uvc_gadget_trace_param;
 
 /* --------------------------------------------------------------------------
  * Function descriptors
@@ -656,6 +656,6 @@ error:
 	return ret;
 }
 
-module_param_named(trace, uvc_trace_param, uint, S_IRUGO|S_IWUSR);
+module_param_named(trace, uvc_gadget_trace_param, uint, S_IRUGO|S_IWUSR);
 MODULE_PARM_DESC(trace, "Trace level bitmask");
 
diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c
index d0b8bde59e59..eafa6d2c5ed7 100644
--- a/drivers/usb/gadget/fsl_mxc_udc.c
+++ b/drivers/usb/gadget/fsl_mxc_udc.c
@@ -30,7 +30,7 @@ int fsl_udc_clk_init(struct platform_device *pdev)
 
 	pdata = pdev->dev.platform_data;
 
-	if (!cpu_is_mx35()) {
+	if (!cpu_is_mx35() && !cpu_is_mx25()) {
 		mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb");
 		if (IS_ERR(mxc_ahb_clk))
 			return PTR_ERR(mxc_ahb_clk);
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index 4b0e4a040d6f..d1af253a9105 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -392,6 +392,17 @@ static int __gfs_do_config(struct usb_configuration *c,
 	if (unlikely(ret < 0))
 		return ret;
 
+	/* After previous do_configs there may be some invalid
+	 * pointers in c->interface array.  This happens every time
+	 * a user space function with fewer interfaces than a user
+	 * space function that was run before the new one is run.  The
+	 * compasit's set_config() assumes that if there is no more
+	 * then MAX_CONFIG_INTERFACES interfaces in a configuration
+	 * then there is a NULL pointer after the last interface in
+	 * c->interface array.  We need to make sure this is true. */
+	if (c->next_interface_id < ARRAY_SIZE(c->interface))
+		c->interface[c->next_interface_id] = NULL;
+
 	return 0;
 }
 
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
index 43abf55d8c60..4c3ac5c42237 100644
--- a/drivers/usb/gadget/printer.c
+++ b/drivers/usb/gadget/printer.c
@@ -82,7 +82,7 @@ static struct class *usb_gadget_class;
 struct printer_dev {
 	spinlock_t		lock;		/* lock this structure */
 	/* lock buffer lists during read/write calls */
-	spinlock_t		lock_printer_io;
+	struct mutex		lock_printer_io;
 	struct usb_gadget	*gadget;
 	struct usb_request	*req;		/* for control responses */
 	u8			config;
@@ -567,7 +567,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr)
 
 	DBG(dev, "printer_read trying to read %d bytes\n", (int)len);
 
-	spin_lock(&dev->lock_printer_io);
+	mutex_lock(&dev->lock_printer_io);
 	spin_lock_irqsave(&dev->lock, flags);
 
 	/* We will use this flag later to check if a printer reset happened
@@ -601,7 +601,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr)
 		 * call or not.
 		 */
 		if (fd->f_flags & (O_NONBLOCK|O_NDELAY)) {
-			spin_unlock(&dev->lock_printer_io);
+			mutex_unlock(&dev->lock_printer_io);
 			return -EAGAIN;
 		}
 
@@ -648,7 +648,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr)
 		if (dev->reset_printer) {
 			list_add(&current_rx_req->list, &dev->rx_reqs);
 			spin_unlock_irqrestore(&dev->lock, flags);
-			spin_unlock(&dev->lock_printer_io);
+			mutex_unlock(&dev->lock_printer_io);
 			return -EAGAIN;
 		}
 
@@ -673,7 +673,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr)
 	dev->current_rx_buf = current_rx_buf;
 
 	spin_unlock_irqrestore(&dev->lock, flags);
-	spin_unlock(&dev->lock_printer_io);
+	mutex_unlock(&dev->lock_printer_io);
 
 	DBG(dev, "printer_read returned %d bytes\n", (int)bytes_copied);
 
@@ -697,7 +697,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 	if (len == 0)
 		return -EINVAL;
 
-	spin_lock(&dev->lock_printer_io);
+	mutex_lock(&dev->lock_printer_io);
 	spin_lock_irqsave(&dev->lock, flags);
 
 	/* Check if a printer reset happens while we have interrupts on */
@@ -713,7 +713,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 		 * a NON-Blocking call or not.
 		 */
 		if (fd->f_flags & (O_NONBLOCK|O_NDELAY)) {
-			spin_unlock(&dev->lock_printer_io);
+			mutex_unlock(&dev->lock_printer_io);
 			return -EAGAIN;
 		}
 
@@ -752,7 +752,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 
 		if (copy_from_user(req->buf, buf, size)) {
 			list_add(&req->list, &dev->tx_reqs);
-			spin_unlock(&dev->lock_printer_io);
+			mutex_unlock(&dev->lock_printer_io);
 			return bytes_copied;
 		}
 
@@ -766,14 +766,14 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 		if (dev->reset_printer) {
 			list_add(&req->list, &dev->tx_reqs);
 			spin_unlock_irqrestore(&dev->lock, flags);
-			spin_unlock(&dev->lock_printer_io);
+			mutex_unlock(&dev->lock_printer_io);
 			return -EAGAIN;
 		}
 
 		if (usb_ep_queue(dev->in_ep, req, GFP_ATOMIC)) {
 			list_add(&req->list, &dev->tx_reqs);
 			spin_unlock_irqrestore(&dev->lock, flags);
-			spin_unlock(&dev->lock_printer_io);
+			mutex_unlock(&dev->lock_printer_io);
 			return -EAGAIN;
 		}
 
@@ -782,7 +782,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
 	}
 
 	spin_unlock_irqrestore(&dev->lock, flags);
-	spin_unlock(&dev->lock_printer_io);
+	mutex_unlock(&dev->lock_printer_io);
 
 	DBG(dev, "printer_write sent %d bytes\n", (int)bytes_copied);
 
@@ -820,11 +820,11 @@ printer_poll(struct file *fd, poll_table *wait)
 	unsigned long		flags;
 	int			status = 0;
 
-	spin_lock(&dev->lock_printer_io);
+	mutex_lock(&dev->lock_printer_io);
 	spin_lock_irqsave(&dev->lock, flags);
 	setup_rx_reqs(dev);
 	spin_unlock_irqrestore(&dev->lock, flags);
-	spin_unlock(&dev->lock_printer_io);
+	mutex_unlock(&dev->lock_printer_io);
 
 	poll_wait(fd, &dev->rx_wait, wait);
 	poll_wait(fd, &dev->tx_wait, wait);
@@ -1461,7 +1461,7 @@ autoconf_fail:
 	}
 
 	spin_lock_init(&dev->lock);
-	spin_lock_init(&dev->lock_printer_io);
+	mutex_init(&dev->lock_printer_io);
 	INIT_LIST_HEAD(&dev->tx_reqs);
 	INIT_LIST_HEAD(&dev->tx_reqs_active);
 	INIT_LIST_HEAD(&dev->rx_reqs);
@@ -1594,7 +1594,7 @@ cleanup(void)
 {
 	int status;
 
-	spin_lock(&usb_printer_gadget.lock_printer_io);
+	mutex_lock(&usb_printer_gadget.lock_printer_io);
 	class_destroy(usb_gadget_class);
 	unregister_chrdev_region(g_printer_devno, 2);
 
@@ -1602,6 +1602,6 @@ cleanup(void)
 	if (status)
 		ERROR(dev, "usb_gadget_unregister_driver %x\n", status);
 
-	spin_unlock(&usb_printer_gadget.lock_printer_io);
+	mutex_unlock(&usb_printer_gadget.lock_printer_io);
 }
 module_exit(cleanup);
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 85b0d8921eae..980762453a9c 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -2561,7 +2561,7 @@ static void pxa_udc_shutdown(struct platform_device *_dev)
 		udc_disable(udc);
 }
 
-#ifdef CONFIG_CPU_PXA27x
+#ifdef CONFIG_PXA27x
 extern void pxa27x_clear_otgph(void);
 #else
 #define pxa27x_clear_otgph()   do {} while (0)
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index d5f4c1d45c97..ea2b3c7ebee5 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -735,6 +735,10 @@ static void s3c2410_udc_handle_ep0_idle(struct s3c2410_udc *dev,
 	else
 		dev->ep0state = EP0_OUT_DATA_PHASE;
 
+	if (!dev->driver)
+		return;
+
+	/* deliver the request to the gadget driver */
 	ret = dev->driver->setup(&dev->gadget, crq);
 	if (ret < 0) {
 		if (dev->req_config) {
@@ -1700,9 +1704,13 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
 	if (!driver || driver != udc->driver || !driver->unbind)
 		return -EINVAL;
 
-	dprintk(DEBUG_NORMAL,"usb_gadget_register_driver() '%s'\n",
+	dprintk(DEBUG_NORMAL, "usb_gadget_unregister_driver() '%s'\n",
 		driver->driver.name);
 
+	/* report disconnect */
+	if (driver->disconnect)
+		driver->disconnect(&udc->gadget);
+
 	driver->unbind(&udc->gadget);
 
 	device_del(&udc->gadget.dev);
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index 16bdf77f582a..3e8dcb5455e3 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -536,17 +536,11 @@ recycle:
 		list_move(&req->list, &port->read_pool);
 	}
 
-	/* Push from tty to ldisc; this is immediate with low_latency, and
-	 * may trigger callbacks to this driver ... so drop the spinlock.
+	/* Push from tty to ldisc; without low_latency set this is handled by
+	 * a workqueue, so we won't get callbacks and can hold port_lock
 	 */
 	if (tty && do_push) {
-		spin_unlock_irq(&port->port_lock);
 		tty_flip_buffer_push(tty);
-		wake_up_interruptible(&tty->read_wait);
-		spin_lock_irq(&port->port_lock);
-
-		/* tty may have been closed */
-		tty = port->port_tty;
 	}
 
 
@@ -784,11 +778,6 @@ static int gs_open(struct tty_struct *tty, struct file *file)
 	port->open_count = 1;
 	port->openclose = false;
 
-	/* low_latency means ldiscs work in tasklet context, without
-	 * needing a workqueue schedule ... easier to keep up.
-	 */
-	tty->low_latency = 1;
-
 	/* if connected, start the I/O stream */
 	if (port->port_usb) {
 		struct gserial	*gser = port->port_usb;
@@ -1195,6 +1184,7 @@ void gserial_cleanup(void)
 	n_ports = 0;
 
 	tty_unregister_driver(gs_tty_driver);
+	put_tty_driver(gs_tty_driver);
 	gs_tty_driver = NULL;
 
 	pr_debug("%s: cleaned up ttyGS* support\n", __func__);
diff --git a/drivers/usb/gadget/uvc.h b/drivers/usb/gadget/uvc.h
index 0a705e63c936..e92454cddd7d 100644
--- a/drivers/usb/gadget/uvc.h
+++ b/drivers/usb/gadget/uvc.h
@@ -107,11 +107,11 @@ struct uvc_streaming_control {
 #define UVC_WARN_MINMAX				0
 #define UVC_WARN_PROBE_DEF			1
 
-extern unsigned int uvc_trace_param;
+extern unsigned int uvc_gadget_trace_param;
 
 #define uvc_trace(flag, msg...) \
 	do { \
-		if (uvc_trace_param & flag) \
+		if (uvc_gadget_trace_param & flag) \
 			printk(KERN_DEBUG "uvcvideo: " msg); \
 	} while (0)
 
@@ -220,16 +220,10 @@ struct uvc_file_handle
 #define to_uvc_file_handle(handle) \
 	container_of(handle, struct uvc_file_handle, vfh)
 
-extern struct v4l2_file_operations uvc_v4l2_fops;
-
 /* ------------------------------------------------------------------------
  * Functions
  */
 
-extern int uvc_video_enable(struct uvc_video *video, int enable);
-extern int uvc_video_init(struct uvc_video *video);
-extern int uvc_video_pump(struct uvc_video *video);
-
 extern void uvc_endpoint_stream(struct uvc_device *dev);
 
 extern void uvc_function_connect(struct uvc_device *uvc);
diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c
index 43891991bf21..f7395ac5dc17 100644
--- a/drivers/usb/gadget/uvc_queue.c
+++ b/drivers/usb/gadget/uvc_queue.c
@@ -78,7 +78,8 @@
  *
  */
 
-void uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type)
+static void
+uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type)
 {
 	mutex_init(&queue->mutex);
 	spin_lock_init(&queue->irqlock);
@@ -88,6 +89,28 @@ void uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type)
 }
 
 /*
+ * Free the video buffers.
+ *
+ * This function must be called with the queue lock held.
+ */
+static int uvc_free_buffers(struct uvc_video_queue *queue)
+{
+	unsigned int i;
+
+	for (i = 0; i < queue->count; ++i) {
+		if (queue->buffer[i].vma_use_count != 0)
+			return -EBUSY;
+	}
+
+	if (queue->count) {
+		vfree(queue->mem);
+		queue->count = 0;
+	}
+
+	return 0;
+}
+
+/*
  * Allocate the video buffers.
  *
  * Pages are reserved to make sure they will not be swapped, as they will be
@@ -95,8 +118,9 @@ void uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type)
  *
  * Buffers will be individually mapped, so they must all be page aligned.
  */
-int uvc_alloc_buffers(struct uvc_video_queue *queue, unsigned int nbuffers,
-		unsigned int buflength)
+static int
+uvc_alloc_buffers(struct uvc_video_queue *queue, unsigned int nbuffers,
+		  unsigned int buflength)
 {
 	unsigned int bufsize = PAGE_ALIGN(buflength);
 	unsigned int i;
@@ -150,28 +174,6 @@ done:
 	return ret;
 }
 
-/*
- * Free the video buffers.
- *
- * This function must be called with the queue lock held.
- */
-int uvc_free_buffers(struct uvc_video_queue *queue)
-{
-	unsigned int i;
-
-	for (i = 0; i < queue->count; ++i) {
-		if (queue->buffer[i].vma_use_count != 0)
-			return -EBUSY;
-	}
-
-	if (queue->count) {
-		vfree(queue->mem);
-		queue->count = 0;
-	}
-
-	return 0;
-}
-
 static void __uvc_query_buffer(struct uvc_buffer *buf,
 		struct v4l2_buffer *v4l2_buf)
 {
@@ -195,8 +197,8 @@ static void __uvc_query_buffer(struct uvc_buffer *buf,
 	}
 }
 
-int uvc_query_buffer(struct uvc_video_queue *queue,
-		struct v4l2_buffer *v4l2_buf)
+static int
+uvc_query_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *v4l2_buf)
 {
 	int ret = 0;
 
@@ -217,8 +219,8 @@ done:
  * Queue a video buffer. Attempting to queue a buffer that has already been
  * queued will return -EINVAL.
  */
-int uvc_queue_buffer(struct uvc_video_queue *queue,
-	struct v4l2_buffer *v4l2_buf)
+static int
+uvc_queue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *v4l2_buf)
 {
 	struct uvc_buffer *buf;
 	unsigned long flags;
@@ -298,8 +300,9 @@ static int uvc_queue_waiton(struct uvc_buffer *buf, int nonblocking)
  * Dequeue a video buffer. If nonblocking is false, block until a buffer is
  * available.
  */
-int uvc_dequeue_buffer(struct uvc_video_queue *queue,
-		struct v4l2_buffer *v4l2_buf, int nonblocking)
+static int
+uvc_dequeue_buffer(struct uvc_video_queue *queue, struct v4l2_buffer *v4l2_buf,
+		   int nonblocking)
 {
 	struct uvc_buffer *buf;
 	int ret = 0;
@@ -359,8 +362,9 @@ done:
  * This function implements video queue polling and is intended to be used by
  * the device poll handler.
  */
-unsigned int uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
-		poll_table *wait)
+static unsigned int
+uvc_queue_poll(struct uvc_video_queue *queue, struct file *file,
+	       poll_table *wait)
 {
 	struct uvc_buffer *buf;
 	unsigned int mask = 0;
@@ -407,7 +411,8 @@ static struct vm_operations_struct uvc_vm_ops = {
  * This function implements video buffer memory mapping and is intended to be
  * used by the device mmap handler.
  */
-int uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma)
+static int
+uvc_queue_mmap(struct uvc_video_queue *queue, struct vm_area_struct *vma)
 {
 	struct uvc_buffer *uninitialized_var(buffer);
 	struct page *page;
@@ -458,6 +463,42 @@ done:
 }
 
 /*
+ * Cancel the video buffers queue.
+ *
+ * Cancelling the queue marks all buffers on the irq queue as erroneous,
+ * wakes them up and removes them from the queue.
+ *
+ * If the disconnect parameter is set, further calls to uvc_queue_buffer will
+ * fail with -ENODEV.
+ *
+ * This function acquires the irq spinlock and can be called from interrupt
+ * context.
+ */
+static void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect)
+{
+	struct uvc_buffer *buf;
+	unsigned long flags;
+
+	spin_lock_irqsave(&queue->irqlock, flags);
+	while (!list_empty(&queue->irqqueue)) {
+		buf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
+				       queue);
+		list_del(&buf->queue);
+		buf->state = UVC_BUF_STATE_ERROR;
+		wake_up(&buf->wait);
+	}
+	/* This must be protected by the irqlock spinlock to avoid race
+	 * conditions between uvc_queue_buffer and the disconnection event that
+	 * could result in an interruptible wait in uvc_dequeue_buffer. Do not
+	 * blindly replace this logic by checking for the UVC_DEV_DISCONNECTED
+	 * state outside the queue code.
+	 */
+	if (disconnect)
+		queue->flags |= UVC_QUEUE_DISCONNECTED;
+	spin_unlock_irqrestore(&queue->irqlock, flags);
+}
+
+/*
  * Enable or disable the video buffers queue.
  *
  * The queue must be enabled before starting video acquisition and must be
@@ -474,7 +515,7 @@ done:
  * This function can't be called from interrupt context. Use
  * uvc_queue_cancel() instead.
  */
-int uvc_queue_enable(struct uvc_video_queue *queue, int enable)
+static int uvc_queue_enable(struct uvc_video_queue *queue, int enable)
 {
 	unsigned int i;
 	int ret = 0;
@@ -503,44 +544,8 @@ done:
 	return ret;
 }
 
-/*
- * Cancel the video buffers queue.
- *
- * Cancelling the queue marks all buffers on the irq queue as erroneous,
- * wakes them up and removes them from the queue.
- *
- * If the disconnect parameter is set, further calls to uvc_queue_buffer will
- * fail with -ENODEV.
- *
- * This function acquires the irq spinlock and can be called from interrupt
- * context.
- */
-void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect)
-{
-	struct uvc_buffer *buf;
-	unsigned long flags;
-
-	spin_lock_irqsave(&queue->irqlock, flags);
-	while (!list_empty(&queue->irqqueue)) {
-		buf = list_first_entry(&queue->irqqueue, struct uvc_buffer,
-				       queue);
-		list_del(&buf->queue);
-		buf->state = UVC_BUF_STATE_ERROR;
-		wake_up(&buf->wait);
-	}
-	/* This must be protected by the irqlock spinlock to avoid race
-	 * conditions between uvc_queue_buffer and the disconnection event that
-	 * could result in an interruptible wait in uvc_dequeue_buffer. Do not
-	 * blindly replace this logic by checking for the UVC_DEV_DISCONNECTED
-	 * state outside the queue code.
-	 */
-	if (disconnect)
-		queue->flags |= UVC_QUEUE_DISCONNECTED;
-	spin_unlock_irqrestore(&queue->irqlock, flags);
-}
-
-struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
-		struct uvc_buffer *buf)
+static struct uvc_buffer *
+uvc_queue_next_buffer(struct uvc_video_queue *queue, struct uvc_buffer *buf)
 {
 	struct uvc_buffer *nextbuf;
 	unsigned long flags;
@@ -568,7 +573,7 @@ struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
 	return nextbuf;
 }
 
-struct uvc_buffer *uvc_queue_head(struct uvc_video_queue *queue)
+static struct uvc_buffer *uvc_queue_head(struct uvc_video_queue *queue)
 {
 	struct uvc_buffer *buf = NULL;
 
diff --git a/drivers/usb/gadget/uvc_queue.h b/drivers/usb/gadget/uvc_queue.h
index 7f5a33fe7ae2..1812a8ecc5d0 100644
--- a/drivers/usb/gadget/uvc_queue.h
+++ b/drivers/usb/gadget/uvc_queue.h
@@ -58,30 +58,10 @@ struct uvc_video_queue {
 	struct list_head irqqueue;
 };
 
-extern void uvc_queue_init(struct uvc_video_queue *queue,
-		enum v4l2_buf_type type);
-extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
-		unsigned int nbuffers, unsigned int buflength);
-extern int uvc_free_buffers(struct uvc_video_queue *queue);
-extern int uvc_query_buffer(struct uvc_video_queue *queue,
-		struct v4l2_buffer *v4l2_buf);
-extern int uvc_queue_buffer(struct uvc_video_queue *queue,
-		struct v4l2_buffer *v4l2_buf);
-extern int uvc_dequeue_buffer(struct uvc_video_queue *queue,
-		struct v4l2_buffer *v4l2_buf, int nonblocking);
-extern int uvc_queue_enable(struct uvc_video_queue *queue, int enable);
-extern void uvc_queue_cancel(struct uvc_video_queue *queue, int disconnect);
-extern struct uvc_buffer *uvc_queue_next_buffer(struct uvc_video_queue *queue,
-		struct uvc_buffer *buf);
-extern unsigned int uvc_queue_poll(struct uvc_video_queue *queue,
-		struct file *file, poll_table *wait);
-extern int uvc_queue_mmap(struct uvc_video_queue *queue,
-		struct vm_area_struct *vma);
 static inline int uvc_queue_streaming(struct uvc_video_queue *queue)
 {
 	return queue->flags & UVC_QUEUE_STREAMING;
 }
-extern struct uvc_buffer *uvc_queue_head(struct uvc_video_queue *queue);
 
 #endif /* __KERNEL__ */
 
diff --git a/drivers/usb/gadget/uvc_v4l2.c b/drivers/usb/gadget/uvc_v4l2.c
index a7989f29837e..2dcffdac86d2 100644
--- a/drivers/usb/gadget/uvc_v4l2.c
+++ b/drivers/usb/gadget/uvc_v4l2.c
@@ -363,7 +363,7 @@ uvc_v4l2_poll(struct file *file, poll_table *wait)
 	return mask;
 }
 
-struct v4l2_file_operations uvc_v4l2_fops = {
+static struct v4l2_file_operations uvc_v4l2_fops = {
 	.owner		= THIS_MODULE,
 	.open		= uvc_v4l2_open,
 	.release	= uvc_v4l2_release,
diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
index de8cbc46518d..b08f35438d70 100644
--- a/drivers/usb/gadget/uvc_video.c
+++ b/drivers/usb/gadget/uvc_video.c
@@ -271,7 +271,7 @@ error:
  * This function fills the available USB requests (listed in req_free) with
  * video data from the queued buffers.
  */
-int
+static int
 uvc_video_pump(struct uvc_video *video)
 {
 	struct usb_request *req;
@@ -328,7 +328,7 @@ uvc_video_pump(struct uvc_video *video)
 /*
  * Enable or disable the video stream.
  */
-int
+static int
 uvc_video_enable(struct uvc_video *video, int enable)
 {
 	unsigned int i;
@@ -367,7 +367,7 @@ uvc_video_enable(struct uvc_video *video, int enable)
 /*
  * Initialize the UVC video stream.
  */
-int
+static int
 uvc_video_init(struct uvc_video *video)
 {
 	INIT_LIST_HEAD(&video->req_free);
diff --git a/drivers/usb/gadget/webcam.c b/drivers/usb/gadget/webcam.c
index 417fd6887698..f5f3030cc416 100644
--- a/drivers/usb/gadget/webcam.c
+++ b/drivers/usb/gadget/webcam.c
@@ -28,10 +28,10 @@
 #include "config.c"
 #include "epautoconf.c"
 
-#include "f_uvc.c"
 #include "uvc_queue.c"
-#include "uvc_v4l2.c"
 #include "uvc_video.c"
+#include "uvc_v4l2.c"
+#include "f_uvc.c"
 
 /* --------------------------------------------------------------------------
  * Device descriptor
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index 544ccfd7056e..a8ad8ac120a2 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -182,7 +182,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
 	}
 	clk_enable(priv->usbclk);
 
-	if (!cpu_is_mx35()) {
+	if (!cpu_is_mx35() && !cpu_is_mx25()) {
 		priv->ahbclk = clk_get(dev, "usb_ahb");
 		if (IS_ERR(priv->ahbclk)) {
 			ret = PTR_ERR(priv->ahbclk);
@@ -207,10 +207,17 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
 	/* Initialize the transceiver */
 	if (pdata->otg) {
 		pdata->otg->io_priv = hcd->regs + ULPI_VIEWPORT_OFFSET;
-		if (otg_init(pdata->otg) != 0)
-			dev_err(dev, "unable to init transceiver\n");
-		else if (otg_set_vbus(pdata->otg, 1) != 0)
+		ret = otg_init(pdata->otg);
+		if (ret) {
+			dev_err(dev, "unable to init transceiver, probably missing\n");
+			ret = -ENODEV;
+			goto err_add;
+		}
+		ret = otg_set_vbus(pdata->otg, 1);
+		if (ret) {
 			dev_err(dev, "unable to enable vbus on transceiver\n");
+			goto err_add;
+		}
 	}
 
 	priv->hcd = hcd;
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index 20a0dfe0fe36..0587ad4ce5c2 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -2224,12 +2224,9 @@ static void remove_debug_file(struct isp1362_hcd *isp1362_hcd)
 
 /*-------------------------------------------------------------------------*/
 
-static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd)
+static void __isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd)
 {
 	int tmp = 20;
-	unsigned long flags;
-
-	spin_lock_irqsave(&isp1362_hcd->lock, flags);
 
 	isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC);
 	isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR);
@@ -2240,6 +2237,14 @@ static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd)
 	}
 	if (!tmp)
 		pr_err("Software reset timeout\n");
+}
+
+static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&isp1362_hcd->lock, flags);
+	__isp1362_sw_reset(isp1362_hcd);
 	spin_unlock_irqrestore(&isp1362_hcd->lock, flags);
 }
 
@@ -2418,7 +2423,7 @@ static void isp1362_hc_stop(struct usb_hcd *hcd)
 	if (isp1362_hcd->board && isp1362_hcd->board->reset)
 		isp1362_hcd->board->reset(hcd->self.controller, 1);
 	else
-		isp1362_sw_reset(isp1362_hcd);
+		__isp1362_sw_reset(isp1362_hcd);
 
 	if (isp1362_hcd->board && isp1362_hcd->board->clock)
 		isp1362_hcd->board->clock(hcd->self.controller, 0);
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index a18debdd79b8..418163894775 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -203,7 +203,7 @@ static inline void pxa27x_reset_hc(struct pxa27x_ohci *ohci)
 	__raw_writel(uhchr & ~UHCHR_FHR, ohci->mmio_base + UHCHR);
 }
 
-#ifdef CONFIG_CPU_PXA27x
+#ifdef CONFIG_PXA27x
 extern void pxa27x_clear_otgph(void);
 #else
 #define pxa27x_clear_otgph()	do {} while (0)
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 1a2bb4ce638f..77be3c24a427 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -1065,7 +1065,7 @@ static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
 	else if (speed == LSMODE)
 		rh->port |= USB_PORT_STAT_LOW_SPEED;
 
-	rh->port &= USB_PORT_STAT_RESET;
+	rh->port &= ~USB_PORT_STAT_RESET;
 	rh->port |= USB_PORT_STAT_ENABLE;
 }
 
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index fd9e03afd91c..2eb658d26394 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -835,6 +835,27 @@ fail:
 	return 0;
 }
 
+void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci,
+		struct usb_device *udev)
+{
+	struct xhci_virt_device *virt_dev;
+	struct xhci_ep_ctx	*ep0_ctx;
+	struct xhci_ring	*ep_ring;
+
+	virt_dev = xhci->devs[udev->slot_id];
+	ep0_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, 0);
+	ep_ring = virt_dev->eps[0].ring;
+	/*
+	 * FIXME we don't keep track of the dequeue pointer very well after a
+	 * Set TR dequeue pointer, so we're setting the dequeue pointer of the
+	 * host to our enqueue pointer.  This should only be called after a
+	 * configured device has reset, so all control transfers should have
+	 * been completed or cancelled before the reset.
+	 */
+	ep0_ctx->deq = xhci_trb_virt_to_dma(ep_ring->enq_seg, ep_ring->enqueue);
+	ep0_ctx->deq |= ep_ring->cycle_state;
+}
+
 /* Setup an xHCI virtual device for a Set Address command */
 int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev)
 {
@@ -1002,7 +1023,7 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
 	return EP_INTERVAL(interval);
 }
 
-/* The "Mult" field in the endpoint context is only set for SuperSpeed devices.
+/* The "Mult" field in the endpoint context is only set for SuperSpeed isoc eps.
  * High speed endpoint descriptors can define "the number of additional
  * transaction opportunities per microframe", but that goes in the Max Burst
  * endpoint context field.
@@ -1010,7 +1031,8 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
 static inline u32 xhci_get_endpoint_mult(struct usb_device *udev,
 		struct usb_host_endpoint *ep)
 {
-	if (udev->speed != USB_SPEED_SUPER)
+	if (udev->speed != USB_SPEED_SUPER ||
+			!usb_endpoint_xfer_isoc(&ep->desc))
 		return 0;
 	return ep->ss_ep_comp.bmAttributes;
 }
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 9012098add6b..bfc99a939455 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -182,8 +182,12 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer
  * set, but other sections talk about dealing with the chain bit set.  This was
  * fixed in the 0.96 specification errata, but we have to assume that all 0.95
  * xHCI hardware can't handle the chain bit being cleared on a link TRB.
+ *
+ * @more_trbs_coming:	Will you enqueue more TRBs before calling
+ *			prepare_transfer()?
  */
-static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer)
+static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring,
+		bool consumer, bool more_trbs_coming)
 {
 	u32 chain;
 	union xhci_trb *next;
@@ -199,15 +203,28 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer
 	while (last_trb(xhci, ring, ring->enq_seg, next)) {
 		if (!consumer) {
 			if (ring != xhci->event_ring) {
-				if (chain) {
-					next->link.control |= TRB_CHAIN;
-
-					/* Give this link TRB to the hardware */
-					wmb();
-					next->link.control ^= TRB_CYCLE;
-				} else {
+				/*
+				 * If the caller doesn't plan on enqueueing more
+				 * TDs before ringing the doorbell, then we
+				 * don't want to give the link TRB to the
+				 * hardware just yet.  We'll give the link TRB
+				 * back in prepare_ring() just before we enqueue
+				 * the TD at the top of the ring.
+				 */
+				if (!chain && !more_trbs_coming)
 					break;
+
+				/* If we're not dealing with 0.95 hardware,
+				 * carry over the chain bit of the previous TRB
+				 * (which may mean the chain bit is cleared).
+				 */
+				if (!xhci_link_trb_quirk(xhci)) {
+					next->link.control &= ~TRB_CHAIN;
+					next->link.control |= chain;
 				}
+				/* Give this link TRB to the hardware */
+				wmb();
+				next->link.control ^= TRB_CYCLE;
 			}
 			/* Toggle the cycle bit after the last ring segment. */
 			if (last_trb_on_last_seg(xhci, ring, ring->enq_seg, next)) {
@@ -1707,9 +1724,12 @@ void xhci_handle_event(struct xhci_hcd *xhci)
 /*
  * Generic function for queueing a TRB on a ring.
  * The caller must have checked to make sure there's room on the ring.
+ *
+ * @more_trbs_coming:	Will you enqueue more TRBs before calling
+ *			prepare_transfer()?
  */
 static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
-		bool consumer,
+		bool consumer, bool more_trbs_coming,
 		u32 field1, u32 field2, u32 field3, u32 field4)
 {
 	struct xhci_generic_trb *trb;
@@ -1719,7 +1739,7 @@ static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,
 	trb->field[1] = field2;
 	trb->field[2] = field3;
 	trb->field[3] = field4;
-	inc_enq(xhci, ring, consumer);
+	inc_enq(xhci, ring, consumer, more_trbs_coming);
 }
 
 /*
@@ -1988,6 +2008,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	int trb_buff_len, this_sg_len, running_total;
 	bool first_trb;
 	u64 addr;
+	bool more_trbs_coming;
 
 	struct xhci_generic_trb *start_trb;
 	int start_cycle;
@@ -2073,7 +2094,11 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		length_field = TRB_LEN(trb_buff_len) |
 			remainder |
 			TRB_INTR_TARGET(0);
-		queue_trb(xhci, ep_ring, false,
+		if (num_trbs > 1)
+			more_trbs_coming = true;
+		else
+			more_trbs_coming = false;
+		queue_trb(xhci, ep_ring, false, more_trbs_coming,
 				lower_32_bits(addr),
 				upper_32_bits(addr),
 				length_field,
@@ -2124,6 +2149,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	int num_trbs;
 	struct xhci_generic_trb *start_trb;
 	bool first_trb;
+	bool more_trbs_coming;
 	int start_cycle;
 	u32 field, length_field;
 
@@ -2212,7 +2238,11 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		length_field = TRB_LEN(trb_buff_len) |
 			remainder |
 			TRB_INTR_TARGET(0);
-		queue_trb(xhci, ep_ring, false,
+		if (num_trbs > 1)
+			more_trbs_coming = true;
+		else
+			more_trbs_coming = false;
+		queue_trb(xhci, ep_ring, false, more_trbs_coming,
 				lower_32_bits(addr),
 				upper_32_bits(addr),
 				length_field,
@@ -2291,7 +2321,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	/* Queue setup TRB - see section 6.4.1.2.1 */
 	/* FIXME better way to translate setup_packet into two u32 fields? */
 	setup = (struct usb_ctrlrequest *) urb->setup_packet;
-	queue_trb(xhci, ep_ring, false,
+	queue_trb(xhci, ep_ring, false, true,
 			/* FIXME endianness is probably going to bite my ass here. */
 			setup->bRequestType | setup->bRequest << 8 | setup->wValue << 16,
 			setup->wIndex | setup->wLength << 16,
@@ -2307,7 +2337,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	if (urb->transfer_buffer_length > 0) {
 		if (setup->bRequestType & USB_DIR_IN)
 			field |= TRB_DIR_IN;
-		queue_trb(xhci, ep_ring, false,
+		queue_trb(xhci, ep_ring, false, true,
 				lower_32_bits(urb->transfer_dma),
 				upper_32_bits(urb->transfer_dma),
 				length_field,
@@ -2324,7 +2354,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		field = 0;
 	else
 		field = TRB_DIR_IN;
-	queue_trb(xhci, ep_ring, false,
+	queue_trb(xhci, ep_ring, false, false,
 			0,
 			0,
 			TRB_INTR_TARGET(0),
@@ -2350,18 +2380,21 @@ static int queue_command(struct xhci_hcd *xhci, u32 field1, u32 field2,
 		u32 field3, u32 field4, bool command_must_succeed)
 {
 	int reserved_trbs = xhci->cmd_ring_reserved_trbs;
+	int ret;
+
 	if (!command_must_succeed)
 		reserved_trbs++;
 
-	if (!room_on_ring(xhci, xhci->cmd_ring, reserved_trbs)) {
-		if (!in_interrupt())
-			xhci_err(xhci, "ERR: No room for command on command ring\n");
+	ret = prepare_ring(xhci, xhci->cmd_ring, EP_STATE_RUNNING,
+			reserved_trbs, GFP_ATOMIC);
+	if (ret < 0) {
+		xhci_err(xhci, "ERR: No room for command on command ring\n");
 		if (command_must_succeed)
 			xhci_err(xhci, "ERR: Reserved TRB counting for "
 					"unfailable commands failed.\n");
-		return -ENOMEM;
+		return ret;
 	}
-	queue_trb(xhci, xhci->cmd_ring, false, field1, field2, field3,
+	queue_trb(xhci, xhci->cmd_ring, false, false, field1, field2, field3,
 			field4 | xhci->cmd_ring->cycle_state);
 	return 0;
 }
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 27345cd04da0..3998f72cd0c4 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -2134,6 +2134,8 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev)
 	/* If this is a Set Address to an unconfigured device, setup ep 0 */
 	if (!udev->config)
 		xhci_setup_addressable_virt_dev(xhci, udev);
+	else
+		xhci_copy_ep0_dequeue_into_input_ctx(xhci, udev);
 	/* Otherwise, assume the core has the device configured how it wants */
 	xhci_dbg(xhci, "Slot ID %d Input Context:\n", udev->slot_id);
 	xhci_dbg_ctx(xhci, virt_dev->in_ctx, 2);
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 8b4b7d39f79c..6c7e3430ec93 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1292,6 +1292,8 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags);
 void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id);
 int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, struct usb_device *udev, gfp_t flags);
 int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev);
+void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci,
+		struct usb_device *udev);
 unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc);
 unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc);
 unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index);
diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 30d930386b65..d25814c172b2 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -2436,7 +2436,8 @@ sisusb_open(struct inode *inode, struct file *file)
 	}
 
 	if (!sisusb->devinit) {
-		if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH) {
+		if (sisusb->sisusb_dev->speed == USB_SPEED_HIGH ||
+		    sisusb->sisusb_dev->speed == USB_SPEED_SUPER) {
 			if (sisusb_init_gfxdevice(sisusb, 0)) {
 				mutex_unlock(&sisusb->lock);
 				dev_err(&sisusb->sisusb_dev->dev, "Failed to initialize device\n");
@@ -3166,7 +3167,7 @@ static int sisusb_probe(struct usb_interface *intf,
 
 	sisusb->present = 1;
 
-	if (dev->speed == USB_SPEED_HIGH) {
+	if (dev->speed == USB_SPEED_HIGH || dev->speed == USB_SPEED_SUPER) {
 		int initscreen = 1;
 #ifdef INCL_SISUSB_CON
 		if (sisusb_first_vc > 0 &&
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index fad70bc83555..3b795c56221f 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -219,8 +219,8 @@ static int musb_ulpi_write(struct otg_transceiver *otg,
 	return 0;
 }
 #else
-#define musb_ulpi_read(a, b)		NULL
-#define musb_ulpi_write(a, b, c)	NULL
+#define musb_ulpi_read		NULL
+#define musb_ulpi_write		NULL
 #endif
 
 static struct otg_io_access_ops musb_ulpi_access = {
@@ -451,10 +451,6 @@ void musb_hnp_stop(struct musb *musb)
  * @param power
  */
 
-#define STAGE0_MASK (MUSB_INTR_RESUME | MUSB_INTR_SESSREQ \
-		| MUSB_INTR_VBUSERROR | MUSB_INTR_CONNECT \
-		| MUSB_INTR_RESET)
-
 static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 				u8 devctl, u8 power)
 {
@@ -642,7 +638,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 		handled = IRQ_HANDLED;
 	}
 
-
+#endif
 	if (int_usb & MUSB_INTR_SUSPEND) {
 		DBG(1, "SUSPEND (%s) devctl %02x power %02x\n",
 				otg_state_string(musb), devctl, power);
@@ -705,6 +701,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 		}
 	}
 
+#ifdef CONFIG_USB_MUSB_HDRC_HCD
 	if (int_usb & MUSB_INTR_CONNECT) {
 		struct usb_hcd *hcd = musb_to_hcd(musb);
 		void __iomem *mbase = musb->mregs;
@@ -1597,7 +1594,7 @@ irqreturn_t musb_interrupt(struct musb *musb)
 	/* the core can interrupt us for multiple reasons; docs have
 	 * a generic interrupt flowchart to follow
 	 */
-	if (musb->int_usb & STAGE0_MASK)
+	if (musb->int_usb)
 		retval |= musb_stage0_irq(musb, musb->int_usb,
 				devctl, power);
 
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index b22d02dea7d3..91d67794e350 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -470,7 +470,8 @@ struct musb_csr_regs {
 
 struct musb_context_registers {
 
-#ifdef CONFIG_PM
+#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
+    defined(CONFIG_ARCH_OMAP4)
 	u32 otg_sysconfig, otg_forcestandby;
 #endif
 	u8 power;
@@ -484,7 +485,8 @@ struct musb_context_registers {
 	struct musb_csr_regs index_regs[MUSB_C_NUM_EPS];
 };
 
-#ifdef CONFIG_PM
+#if defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
+    defined(CONFIG_ARCH_OMAP4)
 extern void musb_platform_save_context(struct musb *musb,
 		struct musb_context_registers *musb_context);
 extern void musb_platform_restore_context(struct musb *musb,
diff --git a/drivers/usb/musb/musbhsdma.c b/drivers/usb/musb/musbhsdma.c
index 1008044a3bbc..dc66e4376d49 100644
--- a/drivers/usb/musb/musbhsdma.c
+++ b/drivers/usb/musb/musbhsdma.c
@@ -132,18 +132,9 @@ static void configure_channel(struct dma_channel *channel,
 	if (mode) {
 		csr |= 1 << MUSB_HSDMA_MODE1_SHIFT;
 		BUG_ON(len < packet_sz);
-
-		if (packet_sz >= 64) {
-			csr |= MUSB_HSDMA_BURSTMODE_INCR16
-					<< MUSB_HSDMA_BURSTMODE_SHIFT;
-		} else if (packet_sz >= 32) {
-			csr |= MUSB_HSDMA_BURSTMODE_INCR8
-					<< MUSB_HSDMA_BURSTMODE_SHIFT;
-		} else if (packet_sz >= 16) {
-			csr |= MUSB_HSDMA_BURSTMODE_INCR4
-					<< MUSB_HSDMA_BURSTMODE_SHIFT;
-		}
 	}
+	csr |= MUSB_HSDMA_BURSTMODE_INCR16
+				<< MUSB_HSDMA_BURSTMODE_SHIFT;
 
 	csr |= (musb_channel->epnum << MUSB_HSDMA_ENDPOINT_SHIFT)
 		| (1 << MUSB_HSDMA_ENABLE_SHIFT)
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 05c077f8f9ac..3c48e77a0aa2 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -29,19 +29,6 @@ static void tusb_source_power(struct musb *musb, int is_on);
 #define TUSB_REV_MAJOR(reg_val)		((reg_val >> 4) & 0xf)
 #define TUSB_REV_MINOR(reg_val)		(reg_val & 0xf)
 
-#ifdef CONFIG_PM
-/* REVISIT: These should be only needed if somebody implements off idle */
-void musb_platform_save_context(struct musb *musb,
-			struct musb_context_registers *musb_context)
-{
-}
-
-void musb_platform_restore_context(struct musb *musb,
-			struct musb_context_registers *musb_context)
-{
-}
-#endif
-
 /*
  * Checks the revision. We need to use the DMA register as 3.0 does not
  * have correct versions for TUSB_PRCM_REV or TUSB_INT_CTRL_REV.
diff --git a/drivers/usb/otg/ulpi.c b/drivers/usb/otg/ulpi.c
index b1b346932946..d331b222ad21 100644
--- a/drivers/usb/otg/ulpi.c
+++ b/drivers/usb/otg/ulpi.c
@@ -59,12 +59,17 @@ static int ulpi_set_flags(struct otg_transceiver *otg)
 
 static int ulpi_init(struct otg_transceiver *otg)
 {
-	int i, vid, pid;
-
-	vid = (otg_io_read(otg, ULPI_VENDOR_ID_HIGH) << 8) |
-	       otg_io_read(otg, ULPI_VENDOR_ID_LOW);
-	pid = (otg_io_read(otg, ULPI_PRODUCT_ID_HIGH) << 8) |
-	       otg_io_read(otg, ULPI_PRODUCT_ID_LOW);
+	int i, vid, pid, ret;
+	u32 ulpi_id = 0;
+
+	for (i = 0; i < 4; i++) {
+		ret = otg_io_read(otg, ULPI_PRODUCT_ID_HIGH - i);
+		if (ret < 0)
+			return ret;
+		ulpi_id = (ulpi_id << 8) | ret;
+	}
+	vid = ulpi_id & 0xffff;
+	pid = ulpi_id >> 16;
 
 	pr_info("ULPI transceiver vendor/product ID 0x%04x/0x%04x\n", vid, pid);
 
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 79dd1ae195e5..e298dc4baed7 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -653,7 +653,6 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(EVOLUTION_VID, EVOLUTION_ER1_PID) },
 	{ USB_DEVICE(EVOLUTION_VID, EVO_HYBRID_PID) },
 	{ USB_DEVICE(EVOLUTION_VID, EVO_RCM4_PID) },
-	{ USB_DEVICE(CONTEC_VID, CONTEC_COM1USBH_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_ARTEMIS_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_ATIK_ATK16C_PID) },
@@ -692,6 +691,7 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
 	{ USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
+	{ USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_SERIAL_VX7_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
 	{ USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) },
@@ -738,6 +738,14 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, MJSG_SR_RADIO_PID) },
 	{ USB_DEVICE(FTDI_VID, MJSG_HD_RADIO_PID) },
 	{ USB_DEVICE(FTDI_VID, MJSG_XM_RADIO_PID) },
+	{ USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_ST_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+	{ USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_SLITE_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+	{ USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_SH2_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+	{ USB_DEVICE(FTDI_VID, XVERVE_SIGNALYZER_SH4_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 94d86c3febcb..d01946db8fac 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -501,13 +501,6 @@
 #define CONTEC_COM1USBH_PID	0x8311	/* COM-1(USB)H */
 
 /*
- * Contec products (http://www.contec.com)
- * Submitted by Daniel Sangorrin
- */
-#define CONTEC_VID		0x06CE	/* Vendor ID */
-#define CONTEC_COM1USBH_PID	0x8311	/* COM-1(USB)H */
-
-/*
  * Definitions for B&B Electronics products.
  */
 #define BANDB_VID		0x0856	/* B&B Electronics Vendor ID */
@@ -703,6 +696,12 @@
 #define TELLDUS_TELLSTICK_PID		0x0C30	/* RF control dongle 433 MHz using FT232RL */
 
 /*
+ * RT Systems programming cables for various ham radios
+ */
+#define RTSYSTEMS_VID			0x2100	/* Vendor ID */
+#define RTSYSTEMS_SERIAL_VX7_PID	0x9e52	/* Serial converter for VX-7 Radios using FT232RL */
+
+/*
  * Bayer Ascensia Contour blood glucose meter USB-converter cable.
  * http://winglucofacts.com/cables/
  */
@@ -1024,3 +1023,12 @@
 #define MJSG_SR_RADIO_PID	0x9379
 #define MJSG_XM_RADIO_PID	0x937A
 #define MJSG_HD_RADIO_PID	0x937C
+
+/*
+ * Xverve Signalyzer tools (http://www.signalyzer.com/)
+ */
+#define XVERVE_SIGNALYZER_ST_PID	0xBCA0
+#define XVERVE_SIGNALYZER_SLITE_PID	0xBCA1
+#define XVERVE_SIGNALYZER_SH2_PID	0xBCA2
+#define XVERVE_SIGNALYZER_SH4_PID	0xBCA4
+
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index e280ad8e12f7..5cd30e4345c6 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -206,6 +206,7 @@ static void option_instat_callback(struct urb *urb);
 #define AMOI_PRODUCT_H01			0x0800
 #define AMOI_PRODUCT_H01A			0x7002
 #define AMOI_PRODUCT_H02			0x0802
+#define AMOI_PRODUCT_SKYPEPHONE_S2		0x0407
 
 #define DELL_VENDOR_ID				0x413C
 
@@ -302,6 +303,7 @@ static void option_instat_callback(struct urb *urb);
 #define QISDA_PRODUCT_H21_4512			0x4512
 #define QISDA_PRODUCT_H21_4523			0x4523
 #define QISDA_PRODUCT_H20_4515			0x4515
+#define QISDA_PRODUCT_H20_4518			0x4518
 #define QISDA_PRODUCT_H20_4519			0x4519
 
 /* TLAYTECH PRODUCTS */
@@ -516,6 +518,7 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01) },
 	{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H01A) },
 	{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_H02) },
+	{ USB_DEVICE(AMOI_VENDOR_ID, AMOI_PRODUCT_SKYPEPHONE_S2) },
 
 	{ USB_DEVICE(DELL_VENDOR_ID, DELL_PRODUCT_5700_MINICARD) },		/* Dell Wireless 5700 Mobile Broadband CDMA/EVDO Mini-Card == Novatel Expedite EV620 CDMA/EV-DO */
 	{ USB_DEVICE(DELL_VENDOR_ID, DELL_PRODUCT_5500_MINICARD) },		/* Dell Wireless 5500 Mobile Broadband HSDPA Mini-Card == Novatel Expedite EU740 HSDPA/3G */
@@ -852,6 +855,7 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H21_4512) },
 	{ USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H21_4523) },
 	{ USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H20_4515) },
+	{ USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H20_4518) },
 	{ USB_DEVICE(QISDA_VENDOR_ID, QISDA_PRODUCT_H20_4519) },
 	{ USB_DEVICE(TOSHIBA_VENDOR_ID, TOSHIBA_PRODUCT_G450) },
 	{ USB_DEVICE(TOSHIBA_VENDOR_ID, TOSHIBA_PRODUCT_HSDPA_MINICARD ) }, /* Toshiba 3G HSDPA == Novatel Expedite EU870D MiniCard */
diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c
index 04bb759536bb..cde67cacb2c3 100644
--- a/drivers/usb/serial/qcserial.c
+++ b/drivers/usb/serial/qcserial.c
@@ -51,6 +51,8 @@ static const struct usb_device_id id_table[] = {
 	{USB_DEVICE(0x1f45, 0x0001)},	/* Unknown Gobi QDL device */
 	{USB_DEVICE(0x413c, 0x8185)},	/* Dell Gobi 2000 QDL device (N0218, VU936) */
 	{USB_DEVICE(0x413c, 0x8186)},	/* Dell Gobi 2000 Modem device (N0218, VU936) */
+	{USB_DEVICE(0x05c6, 0x9208)},	/* Generic Gobi 2000 QDL device */
+	{USB_DEVICE(0x05c6, 0x920b)},	/* Generic Gobi 2000 Modem device */
 	{USB_DEVICE(0x05c6, 0x9224)},	/* Sony Gobi 2000 QDL device (N0279, VU730) */
 	{USB_DEVICE(0x05c6, 0x9225)},	/* Sony Gobi 2000 Modem device (N0279, VU730) */
 	{USB_DEVICE(0x05c6, 0x9244)},	/* Samsung Gobi 2000 QDL device (VL176) */
@@ -139,6 +141,7 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
 					"Could not set interface, error %d\n",
 					retval);
 				retval = -ENODEV;
+				kfree(data);
 			}
 			return retval;
 		}
@@ -155,6 +158,7 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
 					"Could not set interface, error %d\n",
 					retval);
 				retval = -ENODEV;
+				kfree(data);
 			}
 			return retval;
 		}
@@ -163,6 +167,7 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id)
 	default:
 		dev_err(&serial->dev->dev,
 			"unknown number of interfaces: %d\n", nintf);
+		kfree(data);
 		return -ENODEV;
 	}
 
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index ef0bdb08d788..d47b56e9e8ce 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -245,6 +245,7 @@ static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(0x1199, 0x0021) },	/* Sierra Wireless AirCard 597E */
 	{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
 	{ USB_DEVICE(0x1199, 0x0120) },	/* Sierra Wireless USB Dongle 595U */
+	{ USB_DEVICE(0x1199, 0x0301) },	/* Sierra Wireless USB Dongle 250U */
 	/* Sierra Wireless C597 */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
 	/* Sierra Wireless T598 */
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 44716427c51c..64ec073e89de 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -139,9 +139,7 @@ static int usb_stor_msg_common(struct us_data *us, int timeout)
 
 	/* fill the common fields in the URB */
 	us->current_urb->context = &urb_done;
-	us->current_urb->actual_length = 0;
-	us->current_urb->error_count = 0;
-	us->current_urb->status = 0;
+	us->current_urb->transfer_flags = 0;
 
 	/* we assume that if transfer_buffer isn't us->iobuf then it
 	 * hasn't been mapped for DMA.  Yes, this is clunky, but it's