Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Conflicts:
	arch/microblaze/include/asm/socket.h

77 files changed, 1727 insertions, 2714 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 3f1045993474..2bfc41ece0e1 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -462,11 +462,18 @@ urbs:
 
 		rcv->buffer = buf;
 
-		usb_fill_bulk_urb(rcv->urb, acm->dev,
-				  acm->rx_endpoint,
-				  buf->base,
-				  acm->readsize,
-				  acm_read_bulk, rcv);
+		if (acm->is_int_ep)
+			usb_fill_int_urb(rcv->urb, acm->dev,
+					 acm->rx_endpoint,
+					 buf->base,
+					 acm->readsize,
+					 acm_read_bulk, rcv, acm->bInterval);
+		else
+			usb_fill_bulk_urb(rcv->urb, acm->dev,
+					  acm->rx_endpoint,
+					  buf->base,
+					  acm->readsize,
+					  acm_read_bulk, rcv);
 		rcv->urb->transfer_dma = buf->dma;
 		rcv->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 
@@ -740,7 +747,7 @@ static int acm_tty_chars_in_buffer(struct tty_struct *tty)
 {
 	struct acm *acm = tty->driver_data;
 	if (!ACM_READY(acm))
-		return -EINVAL;
+		return 0;
 	/*
 	 * This is inaccurate (overcounts), but it works.
 	 */
@@ -1173,6 +1180,9 @@ made_compressed_probe:
 	spin_lock_init(&acm->read_lock);
 	mutex_init(&acm->mutex);
 	acm->rx_endpoint = usb_rcvbulkpipe(usb_dev, epread->bEndpointAddress);
+	acm->is_int_ep = usb_endpoint_xfer_int(epread);
+	if (acm->is_int_ep)
+		acm->bInterval = epread->bInterval;
 	tty_port_init(&acm->port);
 	acm->port.ops = &acm_port_ops;
 
@@ -1227,9 +1237,14 @@ made_compressed_probe:
 			goto alloc_fail7;
 		}
 
-		usb_fill_bulk_urb(snd->urb, usb_dev,
-			usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
-			NULL, acm->writesize, acm_write_bulk, snd);
+		if (usb_endpoint_xfer_int(epwrite))
+			usb_fill_int_urb(snd->urb, usb_dev,
+				usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
+				NULL, acm->writesize, acm_write_bulk, snd, epwrite->bInterval);
+		else
+			usb_fill_bulk_urb(snd->urb, usb_dev,
+				usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
+				NULL, acm->writesize, acm_write_bulk, snd);
 		snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
 		snd->instance = acm;
 	}
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index 1602324808ba..c4a0ee8ffccf 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -126,6 +126,8 @@ struct acm {
 	unsigned int ctrl_caps;				/* control capabilities from the class specific header */
 	unsigned int susp_count;			/* number of suspended interfaces */
 	int combined_interfaces:1;			/* control and data collapsed */
+	int is_int_ep:1;				/* interrupt endpoints contrary to spec used */
+	u8 bInterval;
 	struct acm_wb *delayed_wb;			/* write queued for a device about to be woken */
 };
 
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 0fe434505ac4..ba589d4ca8bc 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -15,7 +15,6 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 #include <linux/module.h>
-#include <linux/smp_lock.h>
 #include <linux/mutex.h>
 #include <linux/uaccess.h>
 #include <linux/bitops.h>
diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 3703789d0d2a..b09a527f7341 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -751,7 +751,7 @@ static int get_capabilities(struct usbtmc_device_data *data)
 {
 	struct device *dev = &data->usb_dev->dev;
 	char *buffer;
-	int rv;
+	int rv = 0;
 
 	buffer = kmalloc(0x18, GFP_KERNEL);
 	if (!buffer)
@@ -763,7 +763,7 @@ static int get_capabilities(struct usbtmc_device_data *data)
 			     0, 0, buffer, 0x18, USBTMC_TIMEOUT);
 	if (rv < 0) {
 		dev_err(dev, "usb_control_msg returned %d\n", rv);
-		return rv;
+		goto err_out;
 	}
 
 	dev_dbg(dev, "GET_CAPABILITIES returned %x\n", buffer[0]);
@@ -773,7 +773,8 @@ static int get_capabilities(struct usbtmc_device_data *data)
 	dev_dbg(dev, "USB488 device capabilities are %x\n", buffer[15]);
 	if (buffer[0] != USBTMC_STATUS_SUCCESS) {
 		dev_err(dev, "GET_CAPABILITIES returned %x\n", buffer[0]);
-		return -EPERM;
+		rv = -EPERM;
+		goto err_out;
 	}
 
 	data->capabilities.interface_capabilities = buffer[4];
@@ -781,8 +782,9 @@ static int get_capabilities(struct usbtmc_device_data *data)
 	data->capabilities.usb488_interface_capabilities = buffer[14];
 	data->capabilities.usb488_device_capabilities = buffer[15];
 
+err_out:
 	kfree(buffer);
-	return 0;
+	return rv;
 }
 
 #define capability_attribute(name)					\
diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig
index 69280c35b5cb..ad925946f869 100644
--- a/drivers/usb/core/Kconfig
+++ b/drivers/usb/core/Kconfig
@@ -28,7 +28,7 @@ comment "Miscellaneous USB options"
 	depends on USB
 
 config USB_DEVICEFS
-	bool "USB device filesystem (DEPRECATED)" if EMBEDDED
+	bool "USB device filesystem (DEPRECATED)"
 	depends on USB
 	---help---
 	  If you say Y here (and to "/proc file system support" in the "File
diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 24dfb33f90cb..a16c538d0132 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -80,38 +80,18 @@ static int usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
 	int max_tx;
 	int i;
 
-	/* Allocate space for the SS endpoint companion descriptor */
-	ep->ss_ep_comp = kzalloc(sizeof(struct usb_host_ss_ep_comp),
-			GFP_KERNEL);
-	if (!ep->ss_ep_comp)
-		return -ENOMEM;
 	desc = (struct usb_ss_ep_comp_descriptor *) buffer;
 	if (desc->bDescriptorType != USB_DT_SS_ENDPOINT_COMP) {
 		dev_warn(ddev, "No SuperSpeed endpoint companion for config %d "
 				" interface %d altsetting %d ep %d: "
 				"using minimum values\n",
 				cfgno, inum, asnum, ep->desc.bEndpointAddress);
-		ep->ss_ep_comp->desc.bLength = USB_DT_SS_EP_COMP_SIZE;
-		ep->ss_ep_comp->desc.bDescriptorType = USB_DT_SS_ENDPOINT_COMP;
-		ep->ss_ep_comp->desc.bMaxBurst = 0;
-		/*
-		 * Leave bmAttributes as zero, which will mean no streams for
-		 * bulk, and isoc won't support multiple bursts of packets.
-		 * With bursts of only one packet, and a Mult of 1, the max
-		 * amount of data moved per endpoint service interval is one
-		 * packet.
-		 */
-		if (usb_endpoint_xfer_isoc(&ep->desc) ||
-				usb_endpoint_xfer_int(&ep->desc))
-			ep->ss_ep_comp->desc.wBytesPerInterval =
-				ep->desc.wMaxPacketSize;
 		/*
 		 * The next descriptor is for an Endpoint or Interface,
 		 * no extra descriptors to copy into the companion structure,
 		 * and we didn't eat up any of the buffer.
 		 */
-		retval = 0;
-		goto valid;
+		return 0;
 	}
 	memcpy(&ep->ss_ep_comp->desc, desc, USB_DT_SS_EP_COMP_SIZE);
 	desc = &ep->ss_ep_comp->desc;
@@ -320,6 +300,28 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
 		buffer += i;
 		size -= i;
 
+		/* Allocate space for the SS endpoint companion descriptor */
+		endpoint->ss_ep_comp = kzalloc(sizeof(struct usb_host_ss_ep_comp),
+				GFP_KERNEL);
+		if (!endpoint->ss_ep_comp)
+			return -ENOMEM;
+
+		/* Fill in some default values (may be overwritten later) */
+		endpoint->ss_ep_comp->desc.bLength = USB_DT_SS_EP_COMP_SIZE;
+		endpoint->ss_ep_comp->desc.bDescriptorType = USB_DT_SS_ENDPOINT_COMP;
+		endpoint->ss_ep_comp->desc.bMaxBurst = 0;
+		/*
+		 * Leave bmAttributes as zero, which will mean no streams for
+		 * bulk, and isoc won't support multiple bursts of packets.
+		 * With bursts of only one packet, and a Mult of 1, the max
+		 * amount of data moved per endpoint service interval is one
+		 * packet.
+		 */
+		if (usb_endpoint_xfer_isoc(&endpoint->desc) ||
+				usb_endpoint_xfer_int(&endpoint->desc))
+			endpoint->ss_ep_comp->desc.wBytesPerInterval =
+				endpoint->desc.wMaxPacketSize;
+
 		if (size > 0) {
 			retval = usb_parse_ss_endpoint_companion(ddev, cfgno,
 					inum, asnum, endpoint, num_ep, buffer,
@@ -329,6 +331,10 @@ static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
 				retval = buffer - buffer0;
 			}
 		} else {
+			dev_warn(ddev, "config %d interface %d altsetting %d "
+				"endpoint 0x%X has no "
+				"SuperSpeed companion descriptor\n",
+				cfgno, inum, asnum, d->bEndpointAddress);
 			retval = buffer - buffer0;
 		}
 	} else {
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index 73c108d117b4..96f11715cd26 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -136,17 +136,19 @@ static const struct class_info clas_info[] =
 	{USB_CLASS_AUDIO,		"audio"},
 	{USB_CLASS_COMM,		"comm."},
 	{USB_CLASS_HID,			"HID"},
-	{USB_CLASS_HUB,			"hub"},
 	{USB_CLASS_PHYSICAL,		"PID"},
+	{USB_CLASS_STILL_IMAGE,		"still"},
 	{USB_CLASS_PRINTER,		"print"},
 	{USB_CLASS_MASS_STORAGE,	"stor."},
+	{USB_CLASS_HUB,			"hub"},
 	{USB_CLASS_CDC_DATA,		"data"},
-	{USB_CLASS_APP_SPEC,		"app."},
-	{USB_CLASS_VENDOR_SPEC,		"vend."},
-	{USB_CLASS_STILL_IMAGE,		"still"},
 	{USB_CLASS_CSCID,		"scard"},
 	{USB_CLASS_CONTENT_SEC,		"c-sec"},
 	{USB_CLASS_VIDEO,		"video"},
+	{USB_CLASS_WIRELESS_CONTROLLER,	"wlcon"},
+	{USB_CLASS_MISC,		"misc"},
+	{USB_CLASS_APP_SPEC,		"app."},
+	{USB_CLASS_VENDOR_SPEC,		"vend."},
 	{-1,				"unk."}		/* leave as last */
 };
 
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 308609039c73..4247eccf858c 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -325,21 +325,34 @@ static void async_completed(struct urb *urb)
 	struct async *as = urb->context;
 	struct dev_state *ps = as->ps;
 	struct siginfo sinfo;
+	struct pid *pid = NULL;
+	uid_t uid = 0;
+	uid_t euid = 0;
+	u32 secid = 0;
+	int signr;
 
 	spin_lock(&ps->lock);
 	list_move_tail(&as->asynclist, &ps->async_completed);
-	spin_unlock(&ps->lock);
 	as->status = urb->status;
-	if (as->signr) {
+	signr = as->signr;
+	if (signr) {
 		sinfo.si_signo = as->signr;
 		sinfo.si_errno = as->status;
 		sinfo.si_code = SI_ASYNCIO;
 		sinfo.si_addr = as->userurb;
-		kill_pid_info_as_uid(as->signr, &sinfo, as->pid, as->uid,
-				      as->euid, as->secid);
+		pid = as->pid;
+		uid = as->uid;
+		euid = as->euid;
+		secid = as->secid;
 	}
 	snoop(&urb->dev->dev, "urb complete\n");
 	snoop_urb(urb, as->userurb);
+	spin_unlock(&ps->lock);
+
+	if (signr)
+		kill_pid_info_as_uid(sinfo.si_signo, &sinfo, pid, uid,
+				      euid, secid);
+
 	wake_up(&ps->wait);
 }
 
@@ -582,7 +595,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
 	if (!ps)
 		goto out;
 
-	ret = -ENOENT;
+	ret = -ENODEV;
 
 	/* usbdev device-node */
 	if (imajor(inode) == USB_DEVICE_MAJOR)
@@ -982,7 +995,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 				USBDEVFS_URB_ZERO_PACKET |
 				USBDEVFS_URB_NO_INTERRUPT))
 		return -EINVAL;
-	if (!uurb->buffer)
+	if (uurb->buffer_length > 0 && !uurb->buffer)
 		return -EINVAL;
 	if (!(uurb->type == USBDEVFS_URB_TYPE_CONTROL &&
 	    (uurb->endpoint & ~USB_ENDPOINT_DIR_MASK) == 0)) {
@@ -1038,11 +1051,6 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 			is_in = 0;
 			uurb->endpoint &= ~USB_DIR_IN;
 		}
-		if (!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ,
-				uurb->buffer, uurb->buffer_length)) {
-			kfree(dr);
-			return -EFAULT;
-		}
 		snoop(&ps->dev->dev, "control urb: bRequest=%02x "
 			"bRrequestType=%02x wValue=%04x "
 			"wIndex=%04x wLength=%04x\n",
@@ -1062,9 +1070,6 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 		uurb->number_of_packets = 0;
 		if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
 			return -EINVAL;
-		if (!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ,
-				uurb->buffer, uurb->buffer_length))
-			return -EFAULT;
 		snoop(&ps->dev->dev, "bulk urb\n");
 		break;
 
@@ -1106,28 +1111,35 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 			return -EINVAL;
 		if (uurb->buffer_length > MAX_USBFS_BUFFER_SIZE)
 			return -EINVAL;
-		if (!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ,
-				uurb->buffer, uurb->buffer_length))
-			return -EFAULT;
 		snoop(&ps->dev->dev, "interrupt urb\n");
 		break;
 
 	default:
 		return -EINVAL;
 	}
-	as = alloc_async(uurb->number_of_packets);
-	if (!as) {
+	if (uurb->buffer_length > 0 &&
+			!access_ok(is_in ? VERIFY_WRITE : VERIFY_READ,
+				uurb->buffer, uurb->buffer_length)) {
 		kfree(isopkt);
 		kfree(dr);
-		return -ENOMEM;
+		return -EFAULT;
 	}
-	as->urb->transfer_buffer = kmalloc(uurb->buffer_length, GFP_KERNEL);
-	if (!as->urb->transfer_buffer) {
+	as = alloc_async(uurb->number_of_packets);
+	if (!as) {
 		kfree(isopkt);
 		kfree(dr);
-		free_async(as);
 		return -ENOMEM;
 	}
+	if (uurb->buffer_length > 0) {
+		as->urb->transfer_buffer = kmalloc(uurb->buffer_length,
+				GFP_KERNEL);
+		if (!as->urb->transfer_buffer) {
+			kfree(isopkt);
+			kfree(dr);
+			free_async(as);
+			return -ENOMEM;
+		}
+	}
 	as->urb->dev = ps->dev;
 	as->urb->pipe = (uurb->type << 30) |
 			__create_pipe(ps->dev, uurb->endpoint & 0xf) |
@@ -1169,7 +1181,7 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 	kfree(isopkt);
 	as->ps = ps;
 	as->userurb = arg;
-	if (uurb->endpoint & USB_DIR_IN)
+	if (is_in && uurb->buffer_length > 0)
 		as->userbuffer = uurb->buffer;
 	else
 		as->userbuffer = NULL;
@@ -1179,9 +1191,9 @@ static int proc_do_submiturb(struct dev_state *ps, struct usbdevfs_urb *uurb,
 	as->uid = cred->uid;
 	as->euid = cred->euid;
 	security_task_getsecid(current, &as->secid);
-	if (!is_in) {
+	if (!is_in && uurb->buffer_length > 0) {
 		if (copy_from_user(as->urb->transfer_buffer, uurb->buffer,
-				as->urb->transfer_buffer_length)) {
+				uurb->buffer_length)) {
 			free_async(as);
 			return -EFAULT;
 		}
@@ -1231,22 +1243,22 @@ static int processcompl(struct async *as, void __user * __user *arg)
 	if (as->userbuffer)
 		if (copy_to_user(as->userbuffer, urb->transfer_buffer,
 				 urb->transfer_buffer_length))
-			return -EFAULT;
+			goto err_out;
 	if (put_user(as->status, &userurb->status))
-		return -EFAULT;
+		goto err_out;
 	if (put_user(urb->actual_length, &userurb->actual_length))
-		return -EFAULT;
+		goto err_out;
 	if (put_user(urb->error_count, &userurb->error_count))
-		return -EFAULT;
+		goto err_out;
 
 	if (usb_endpoint_xfer_isoc(&urb->ep->desc)) {
 		for (i = 0; i < urb->number_of_packets; i++) {
 			if (put_user(urb->iso_frame_desc[i].actual_length,
 				     &userurb->iso_frame_desc[i].actual_length))
-				return -EFAULT;
+				goto err_out;
 			if (put_user(urb->iso_frame_desc[i].status,
 				     &userurb->iso_frame_desc[i].status))
-				return -EFAULT;
+				goto err_out;
 		}
 	}
 
@@ -1255,6 +1267,10 @@ static int processcompl(struct async *as, void __user * __user *arg)
 	if (put_user(addr, (void __user * __user *)arg))
 		return -EFAULT;
 	return 0;
+
+err_out:
+	free_async(as);
+	return -EFAULT;
 }
 
 static struct async *reap_as(struct dev_state *ps)
@@ -1305,7 +1321,8 @@ static int get_urb32(struct usbdevfs_urb *kurb,
 		     struct usbdevfs_urb32 __user *uurb)
 {
 	__u32  uptr;
-	if (get_user(kurb->type, &uurb->type) ||
+	if (!access_ok(VERIFY_READ, uurb, sizeof(*uurb)) ||
+	    __get_user(kurb->type, &uurb->type) ||
 	    __get_user(kurb->endpoint, &uurb->endpoint) ||
 	    __get_user(kurb->status, &uurb->status) ||
 	    __get_user(kurb->flags, &uurb->flags) ||
@@ -1520,8 +1537,9 @@ static int proc_ioctl_compat(struct dev_state *ps, compat_uptr_t arg)
 	u32 udata;
 
 	uioc = compat_ptr((long)arg);
-	if (get_user(ctrl.ifno, &uioc->ifno) ||
-	    get_user(ctrl.ioctl_code, &uioc->ioctl_code) ||
+	if (!access_ok(VERIFY_READ, uioc, sizeof(*uioc)) ||
+	    __get_user(ctrl.ifno, &uioc->ifno) ||
+	    __get_user(ctrl.ioctl_code, &uioc->ioctl_code) ||
 	    __get_user(udata, &uioc->data))
 		return -EFAULT;
 	ctrl.data = compat_ptr(udata);
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index ce3f453f02ef..95ccfa0b9fc5 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -648,7 +648,7 @@ void usb_hcd_poll_rh_status(struct usb_hcd *hcd)
 	struct urb	*urb;
 	int		length;
 	unsigned long	flags;
-	char		buffer[4];	/* Any root hubs with > 31 ports? */
+	char		buffer[6];	/* Any root hubs with > 31 ports? */
 
 	if (unlikely(!hcd->rh_registered))
 		return;
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index d397ecfd5b17..ec5c67ea07b7 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -227,6 +227,10 @@ struct hc_driver {
 		/* has a port been handed over to a companion? */
 	int	(*port_handed_over)(struct usb_hcd *, int);
 
+		/* CLEAR_TT_BUFFER completion callback */
+	void	(*clear_tt_buffer_complete)(struct usb_hcd *,
+				struct usb_host_endpoint *);
+
 	/* xHCI specific functions */
 		/* Called by usb_alloc_dev to alloc HC device structures */
 	int	(*alloc_dev)(struct usb_hcd *, struct usb_device *);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 2af3b4f06054..71f86c60d83c 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -450,10 +450,10 @@ hub_clear_tt_buffer (struct usb_device *hdev, u16 devinfo, u16 tt)
  * talking to TTs must queue control transfers (not just bulk and iso), so
  * both can talk to the same hub concurrently.
  */
-static void hub_tt_kevent (struct work_struct *work)
+static void hub_tt_work(struct work_struct *work)
 {
 	struct usb_hub		*hub =
-		container_of(work, struct usb_hub, tt.kevent);
+		container_of(work, struct usb_hub, tt.clear_work);
 	unsigned long		flags;
 	int			limit = 100;
 
@@ -462,6 +462,7 @@ static void hub_tt_kevent (struct work_struct *work)
 		struct list_head	*next;
 		struct usb_tt_clear	*clear;
 		struct usb_device	*hdev = hub->hdev;
+		const struct hc_driver	*drv;
 		int			status;
 
 		next = hub->tt.clear_list.next;
@@ -471,21 +472,25 @@ static void hub_tt_kevent (struct work_struct *work)
 		/* drop lock so HCD can concurrently report other TT errors */
 		spin_unlock_irqrestore (&hub->tt.lock, flags);
 		status = hub_clear_tt_buffer (hdev, clear->devinfo, clear->tt);
-		spin_lock_irqsave (&hub->tt.lock, flags);
-
 		if (status)
 			dev_err (&hdev->dev,
 				"clear tt %d (%04x) error %d\n",
 				clear->tt, clear->devinfo, status);
+
+		/* Tell the HCD, even if the operation failed */
+		drv = clear->hcd->driver;
+		if (drv->clear_tt_buffer_complete)
+			(drv->clear_tt_buffer_complete)(clear->hcd, clear->ep);
+
 		kfree(clear);
+		spin_lock_irqsave(&hub->tt.lock, flags);
 	}
 	spin_unlock_irqrestore (&hub->tt.lock, flags);
 }
 
 /**
- * usb_hub_tt_clear_buffer - clear control/bulk TT state in high speed hub
- * @udev: the device whose split transaction failed
- * @pipe: identifies the endpoint of the failed transaction
+ * usb_hub_clear_tt_buffer - clear control/bulk TT state in high speed hub
+ * @urb: an URB associated with the failed or incomplete split transaction
  *
  * High speed HCDs use this to tell the hub driver that some split control or
  * bulk transaction failed in a way that requires clearing internal state of
@@ -495,8 +500,10 @@ static void hub_tt_kevent (struct work_struct *work)
  * It may not be possible for that hub to handle additional full (or low)
  * speed transactions until that state is fully cleared out.
  */
-void usb_hub_tt_clear_buffer (struct usb_device *udev, int pipe)
+int usb_hub_clear_tt_buffer(struct urb *urb)
 {
+	struct usb_device	*udev = urb->dev;
+	int			pipe = urb->pipe;
 	struct usb_tt		*tt = udev->tt;
 	unsigned long		flags;
 	struct usb_tt_clear	*clear;
@@ -508,7 +515,7 @@ void usb_hub_tt_clear_buffer (struct usb_device *udev, int pipe)
 	if ((clear = kmalloc (sizeof *clear, GFP_ATOMIC)) == NULL) {
 		dev_err (&udev->dev, "can't save CLEAR_TT_BUFFER state\n");
 		/* FIXME recover somehow ... RESET_TT? */
-		return;
+		return -ENOMEM;
 	}
 
 	/* info that CLEAR_TT_BUFFER needs */
@@ -520,14 +527,19 @@ void usb_hub_tt_clear_buffer (struct usb_device *udev, int pipe)
 			: (USB_ENDPOINT_XFER_BULK << 11);
 	if (usb_pipein (pipe))
 		clear->devinfo |= 1 << 15;
-	
+
+	/* info for completion callback */
+	clear->hcd = bus_to_hcd(udev->bus);
+	clear->ep = urb->ep;
+
 	/* tell keventd to clear state for this TT */
 	spin_lock_irqsave (&tt->lock, flags);
 	list_add_tail (&clear->clear_list, &tt->clear_list);
-	schedule_work (&tt->kevent);
+	schedule_work(&tt->clear_work);
 	spin_unlock_irqrestore (&tt->lock, flags);
+	return 0;
 }
-EXPORT_SYMBOL_GPL(usb_hub_tt_clear_buffer);
+EXPORT_SYMBOL_GPL(usb_hub_clear_tt_buffer);
 
 /* If do_delay is false, return the number of milliseconds the caller
  * needs to delay.
@@ -818,7 +830,7 @@ static void hub_quiesce(struct usb_hub *hub, enum hub_quiescing_type type)
 	if (hub->has_indicators)
 		cancel_delayed_work_sync(&hub->leds);
 	if (hub->tt.hub)
-		cancel_work_sync(&hub->tt.kevent);
+		cancel_work_sync(&hub->tt.clear_work);
 }
 
 /* caller has locked the hub device */
@@ -935,7 +947,7 @@ static int hub_configure(struct usb_hub *hub,
 
 	spin_lock_init (&hub->tt.lock);
 	INIT_LIST_HEAD (&hub->tt.clear_list);
-	INIT_WORK (&hub->tt.kevent, hub_tt_kevent);
+	INIT_WORK(&hub->tt.clear_work, hub_tt_work);
 	switch (hdev->descriptor.bDeviceProtocol) {
 		case 0:
 			break;
diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h
index 889c0f32a40b..de8081f065ed 100644
--- a/drivers/usb/core/hub.h
+++ b/drivers/usb/core/hub.h
@@ -188,16 +188,18 @@ struct usb_tt {
 	/* for control/bulk error recovery (CLEAR_TT_BUFFER) */
 	spinlock_t		lock;
 	struct list_head	clear_list;	/* of usb_tt_clear */
-	struct work_struct			kevent;
+	struct work_struct	clear_work;
 };
 
 struct usb_tt_clear {
 	struct list_head	clear_list;
 	unsigned		tt;
 	u16			devinfo;
+	struct usb_hcd		*hcd;
+	struct usb_host_endpoint	*ep;
 };
 
-extern void usb_hub_tt_clear_buffer(struct usb_device *dev, int pipe);
+extern int usb_hub_clear_tt_buffer(struct urb *urb);
 extern void usb_ep0_reinit(struct usb_device *);
 
 #endif /* __LINUX_HUB_H */
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 2bed83caacb1..9720e699f472 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -806,6 +806,48 @@ static int usb_string_sub(struct usb_device *dev, unsigned int langid,
 	return rc;
 }
 
+static int usb_get_langid(struct usb_device *dev, unsigned char *tbuf)
+{
+	int err;
+
+	if (dev->have_langid)
+		return 0;
+
+	if (dev->string_langid < 0)
+		return -EPIPE;
+
+	err = usb_string_sub(dev, 0, 0, tbuf);
+
+	/* If the string was reported but is malformed, default to english
+	 * (0x0409) */
+	if (err == -ENODATA || (err > 0 && err < 4)) {
+		dev->string_langid = 0x0409;
+		dev->have_langid = 1;
+		dev_err(&dev->dev,
+			"string descriptor 0 malformed (err = %d), "
+			"defaulting to 0x%04x\n",
+				err, dev->string_langid);
+		return 0;
+	}
+
+	/* In case of all other errors, we assume the device is not able to
+	 * deal with strings at all. Set string_langid to -1 in order to
+	 * prevent any string to be retrieved from the device */
+	if (err < 0) {
+		dev_err(&dev->dev, "string descriptor 0 read error: %d\n",
+					err);
+		dev->string_langid = -1;
+		return -EPIPE;
+	}
+
+	/* always use the first langid listed */
+	dev->string_langid = tbuf[2] | (tbuf[3] << 8);
+	dev->have_langid = 1;
+	dev_dbg(&dev->dev, "default language 0x%04x\n",
+				dev->string_langid);
+	return 0;
+}
+
 /**
  * usb_string - returns UTF-8 version of a string descriptor
  * @dev: the device whose string descriptor is being retrieved
@@ -837,24 +879,9 @@ int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
 	if (!tbuf)
 		return -ENOMEM;
 
-	/* get langid for strings if it's not yet known */
-	if (!dev->have_langid) {
-		err = usb_string_sub(dev, 0, 0, tbuf);
-		if (err < 0) {
-			dev_err(&dev->dev,
-				"string descriptor 0 read error: %d\n",
-				err);
-		} else if (err < 4) {
-			dev_err(&dev->dev, "string descriptor 0 too short\n");
-		} else {
-			dev->string_langid = tbuf[2] | (tbuf[3] << 8);
-			/* always use the first langid listed */
-			dev_dbg(&dev->dev, "default language 0x%04x\n",
-				dev->string_langid);
-		}
-
-		dev->have_langid = 1;
-	}
+	err = usb_get_langid(dev, tbuf);
+	if (err < 0)
+		goto errout;
 
 	err = usb_string_sub(dev, dev->string_langid, index, tbuf);
 	if (err < 0)
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 5d1ddf485d1e..7f8e83a954ac 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -286,6 +286,27 @@ config USB_S3C_HSOTG
 	default USB_GADGET
 	select USB_GADGET_SELECTED
 
+config USB_GADGET_IMX
+	boolean "Freescale IMX USB Peripheral Controller"
+	depends on ARCH_MX1
+	help
+	   Freescale's IMX series include an integrated full speed
+	   USB 1.1 device controller.  The controller in the IMX series
+	   is register-compatible.
+
+	   It has Six fixed-function endpoints, as well as endpoint
+	   zero (for control transfers).
+
+	   Say "y" to link the driver statically, or "m" to build a
+	   dynamically linked module called "imx_udc" and force all
+	   gadget drivers to also be dynamically linked.
+
+config USB_IMX
+	tristate
+	depends on USB_GADGET_IMX
+	default USB_GADGET
+	select USB_GADGET_SELECTED
+
 config USB_GADGET_S3C2410
 	boolean "S3C2410 USB Device Controller"
 	depends on ARCH_S3C2410
@@ -321,27 +342,6 @@ config USB_GADGET_MUSB_HDRC
 	  This OTG-capable silicon IP is used in dual designs including
 	  the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
 
-config USB_GADGET_IMX
-	boolean "Freescale IMX USB Peripheral Controller"
-	depends on ARCH_MX1
-	help
-	   Freescale's IMX series include an integrated full speed
-	   USB 1.1 device controller.  The controller in the IMX series
-	   is register-compatible.
-
-	   It has Six fixed-function endpoints, as well as endpoint
-	   zero (for control transfers).
-
-	   Say "y" to link the driver statically, or "m" to build a
-	   dynamically linked module called "imx_udc" and force all
-	   gadget drivers to also be dynamically linked.
-
-config USB_IMX
-	tristate
-	depends on USB_GADGET_IMX
-	default USB_GADGET
-	select USB_GADGET_SELECTED
-
 config USB_GADGET_M66592
 	boolean "Renesas M66592 USB Peripheral Controller"
 	select USB_GADGET_DUALSPEED
@@ -604,6 +604,7 @@ config USB_ZERO_HNPTEST
 config USB_AUDIO
 	tristate "Audio Gadget (EXPERIMENTAL)"
 	depends on SND
+	select SND_PCM
 	help
 	  Gadget Audio is compatible with USB Audio Class specification 1.0.
 	  It will include at least one AudioControl interface, zero or more
diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c
index 826f3adde5d8..77352ccc245e 100644
--- a/drivers/usb/gadget/amd5536udc.c
+++ b/drivers/usb/gadget/amd5536udc.c
@@ -48,7 +48,6 @@
 #include <linux/ioport.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
-#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/timer.h>
diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c
index 94de7e864614..9f80f4e970bd 100644
--- a/drivers/usb/gadget/audio.c
+++ b/drivers/usb/gadget/audio.c
@@ -42,9 +42,9 @@
  * Instead:  allocate your own, using normal USB-IF procedures.
  */
 
-/* Thanks to NetChip Technologies for donating this product ID. */
-#define AUDIO_VENDOR_NUM		0x0525	/* NetChip */
-#define AUDIO_PRODUCT_NUM		0xa4a1	/* Linux-USB Audio Gadget */
+/* Thanks to Linux Foundation for donating this product ID. */
+#define AUDIO_VENDOR_NUM		0x1d6b	/* Linux Foundation */
+#define AUDIO_PRODUCT_NUM		0x0101	/* Linux-USB Audio Gadget */
 
 /*-------------------------------------------------------------------------*/
 
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index d006dc652e02..bd102f5052ba 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -293,15 +293,16 @@ static int __init eth_bind(struct usb_composite_dev *cdev)
 		/* CDC Subset */
 		eth_config_driver.label = "CDC Subset/SAFE";
 
-		device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM),
-		device_desc.idProduct = cpu_to_le16(SIMPLE_PRODUCT_NUM),
-		device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC;
+		device_desc.idVendor = cpu_to_le16(SIMPLE_VENDOR_NUM);
+		device_desc.idProduct = cpu_to_le16(SIMPLE_PRODUCT_NUM);
+		if (!has_rndis())
+			device_desc.bDeviceClass = USB_CLASS_VENDOR_SPEC;
 	}
 
 	if (has_rndis()) {
 		/* RNDIS plus ECM-or-Subset */
-		device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM),
-		device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM),
+		device_desc.idVendor = cpu_to_le16(RNDIS_VENDOR_NUM);
+		device_desc.idProduct = cpu_to_le16(RNDIS_PRODUCT_NUM);
 		device_desc.bNumConfigurations = 2;
 	}
 
diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
index 6829d5961359..a3913519fd58 100644
--- a/drivers/usb/gadget/langwell_udc.c
+++ b/drivers/usb/gadget/langwell_udc.c
@@ -34,7 +34,6 @@
 #include <linux/ioport.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
-#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/timer.h>
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
index 0ce4e2819847..ed21e263f832 100644
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ b/drivers/usb/gadget/pxa25x_udc.c
@@ -139,7 +139,7 @@ static int is_vbus_present(void)
 {
 	struct pxa2xx_udc_mach_info		*mach = the_controller->mach;
 
-	if (mach->gpio_vbus) {
+	if (gpio_is_valid(mach->gpio_vbus)) {
 		int value = gpio_get_value(mach->gpio_vbus);
 
 		if (mach->gpio_vbus_inverted)
@@ -158,7 +158,7 @@ static void pullup_off(void)
 	struct pxa2xx_udc_mach_info		*mach = the_controller->mach;
 	int off_level = mach->gpio_pullup_inverted;
 
-	if (mach->gpio_pullup)
+	if (gpio_is_valid(mach->gpio_pullup))
 		gpio_set_value(mach->gpio_pullup, off_level);
 	else if (mach->udc_command)
 		mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
@@ -169,7 +169,7 @@ static void pullup_on(void)
 	struct pxa2xx_udc_mach_info		*mach = the_controller->mach;
 	int on_level = !mach->gpio_pullup_inverted;
 
-	if (mach->gpio_pullup)
+	if (gpio_is_valid(mach->gpio_pullup))
 		gpio_set_value(mach->gpio_pullup, on_level);
 	else if (mach->udc_command)
 		mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
@@ -1000,7 +1000,7 @@ static int pxa25x_udc_pullup(struct usb_gadget *_gadget, int is_active)
 	udc = container_of(_gadget, struct pxa25x_udc, gadget);
 
 	/* not all boards support pullup control */
-	if (!udc->mach->gpio_pullup && !udc->mach->udc_command)
+	if (!gpio_is_valid(udc->mach->gpio_pullup) && !udc->mach->udc_command)
 		return -EOPNOTSUPP;
 
 	udc->pullup = (is_active != 0);
@@ -1802,11 +1802,13 @@ pxa25x_udc_irq(int irq, void *_dev)
 					USIR0 |= tmp;
 					handled = 1;
 				}
+#ifndef	CONFIG_USB_PXA25X_SMALL
 				if (usir1 & tmp) {
 					handle_ep(&dev->ep[i+8]);
 					USIR1 |= tmp;
 					handled = 1;
 				}
+#endif
 			}
 		}
 
@@ -2160,7 +2162,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
 	dev->dev = &pdev->dev;
 	dev->mach = pdev->dev.platform_data;
 
-	if (dev->mach->gpio_vbus) {
+	if (gpio_is_valid(dev->mach->gpio_vbus)) {
 		if ((retval = gpio_request(dev->mach->gpio_vbus,
 				"pxa25x_udc GPIO VBUS"))) {
 			dev_dbg(&pdev->dev,
@@ -2173,7 +2175,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
 	} else
 		vbus_irq = 0;
 
-	if (dev->mach->gpio_pullup) {
+	if (gpio_is_valid(dev->mach->gpio_pullup)) {
 		if ((retval = gpio_request(dev->mach->gpio_pullup,
 				"pca25x_udc GPIO PULLUP"))) {
 			dev_dbg(&pdev->dev,
@@ -2256,10 +2258,10 @@ lubbock_fail0:
 #endif
 	free_irq(irq, dev);
  err_irq1:
-	if (dev->mach->gpio_pullup)
+	if (gpio_is_valid(dev->mach->gpio_pullup))
 		gpio_free(dev->mach->gpio_pullup);
  err_gpio_pullup:
-	if (dev->mach->gpio_vbus)
+	if (gpio_is_valid(dev->mach->gpio_vbus))
 		gpio_free(dev->mach->gpio_vbus);
  err_gpio_vbus:
 	clk_put(dev->clk);
@@ -2294,11 +2296,11 @@ static int __exit pxa25x_udc_remove(struct platform_device *pdev)
 		free_irq(LUBBOCK_USB_IRQ, dev);
 	}
 #endif
-	if (dev->mach->gpio_vbus) {
+	if (gpio_is_valid(dev->mach->gpio_vbus)) {
 		free_irq(gpio_to_irq(dev->mach->gpio_vbus), dev);
 		gpio_free(dev->mach->gpio_vbus);
 	}
-	if (dev->mach->gpio_pullup)
+	if (gpio_is_valid(dev->mach->gpio_pullup))
 		gpio_free(dev->mach->gpio_pullup);
 
 	clk_put(dev->clk);
@@ -2329,7 +2331,7 @@ static int pxa25x_udc_suspend(struct platform_device *dev, pm_message_t state)
 	struct pxa25x_udc	*udc = platform_get_drvdata(dev);
 	unsigned long flags;
 
-	if (!udc->mach->gpio_pullup && !udc->mach->udc_command)
+	if (!gpio_is_valid(udc->mach->gpio_pullup) && !udc->mach->udc_command)
 		WARNING("USB host won't detect disconnect!\n");
 	udc->suspended = 1;
 
diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c
index 2b4660e08c4d..ca41b0b5afb3 100644
--- a/drivers/usb/gadget/rndis.c
+++ b/drivers/usb/gadget/rndis.c
@@ -442,6 +442,8 @@ gen_ndis_query_resp (int configNr, u32 OID, u8 *buf, unsigned buf_len,
 
 	case OID_802_3_MAC_OPTIONS:
 		pr_debug("%s: OID_802_3_MAC_OPTIONS\n", __func__);
+		*outbuf = cpu_to_le32(0);
+		retval = 0;
 		break;
 
 	/* ieee802.3 statistics OIDs (table 4-4) */
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 9a2b8920532d..a9b452fe6221 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -28,7 +28,6 @@
 #include <linux/ioport.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
-#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/timer.h>
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 1576a0520adf..1a920c70b5a1 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -181,26 +181,27 @@ config USB_OHCI_HCD_PPC_SOC
 	  Enables support for the USB controller on the MPC52xx or
 	  STB03xxx processor chip.  If unsure, say Y.
 
-config USB_OHCI_HCD_PPC_OF
-	bool "OHCI support for PPC USB controller on OF platform bus"
-	depends on USB_OHCI_HCD && PPC_OF
-	default y
-	---help---
-	  Enables support for the USB controller PowerPC present on the
-	  OpenFirmware platform bus.
-
 config USB_OHCI_HCD_PPC_OF_BE
-	bool "Support big endian HC"
-	depends on USB_OHCI_HCD_PPC_OF
-	default y
+	bool "OHCI support for OF platform bus (big endian)"
+	depends on USB_OHCI_HCD && PPC_OF
 	select USB_OHCI_BIG_ENDIAN_DESC
 	select USB_OHCI_BIG_ENDIAN_MMIO
+	---help---
+	  Enables support for big-endian USB controllers present on the
+	  OpenFirmware platform bus.
 
 config USB_OHCI_HCD_PPC_OF_LE
-	bool "Support little endian HC"
-	depends on USB_OHCI_HCD_PPC_OF
-	default n
+	bool "OHCI support for OF platform bus (little endian)"
+	depends on USB_OHCI_HCD && PPC_OF
 	select USB_OHCI_LITTLE_ENDIAN
+	---help---
+	  Enables support for little-endian USB controllers present on the
+	  OpenFirmware platform bus.
+
+config USB_OHCI_HCD_PPC_OF
+	bool
+	depends on USB_OHCI_HCD && PPC_OF
+	default USB_OHCI_HCD_PPC_OF_BE || USB_OHCI_HCD_PPC_OF_LE
 
 config USB_OHCI_HCD_PCI
 	bool "OHCI support for PCI-bus USB controllers"
@@ -337,10 +338,10 @@ config USB_R8A66597_HCD
 
 config SUPERH_ON_CHIP_R8A66597
 	boolean "Enable SuperH on-chip R8A66597 USB"
-	depends on USB_R8A66597_HCD && (CPU_SUBTYPE_SH7366 || CPU_SUBTYPE_SH7723)
+	depends on USB_R8A66597_HCD && (CPU_SUBTYPE_SH7366 || CPU_SUBTYPE_SH7723 || CPU_SUBTYPE_SH7724)
 	help
 	   This driver enables support for the on-chip R8A66597 in the
-	   SH7366 and SH7723 processors.
+	   SH7366, SH7723 and SH7724 processors.
 
 config USB_WHCI_HCD
 	tristate "Wireless USB Host Controller Interface (WHCI) driver (EXPERIMENTAL)"
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c
index c3a778bd359c..59d208d94d4e 100644
--- a/drivers/usb/host/ehci-au1xxx.c
+++ b/drivers/usb/host/ehci-au1xxx.c
@@ -113,6 +113,8 @@ static const struct hc_driver ehci_au1xxx_hc_driver = {
 	.bus_resume		= ehci_bus_resume,
 	.relinquish_port	= ehci_relinquish_port,
 	.port_handed_over	= ehci_port_handed_over,
+
+	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
 };
 
 static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index bf86809c5120..991174937db3 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -325,6 +325,8 @@ static const struct hc_driver ehci_fsl_hc_driver = {
 	.bus_resume = ehci_bus_resume,
 	.relinquish_port = ehci_relinquish_port,
 	.port_handed_over = ehci_port_handed_over,
+
+	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
 };
 
 static int ehci_fsl_drv_probe(struct platform_device *pdev)
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 2b72473544d3..11c627ce6022 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -903,7 +903,8 @@ static int ehci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 			/* already started */
 			break;
 		case QH_STATE_IDLE:
-			WARN_ON(1);
+			/* QH might be waiting for a Clear-TT-Buffer */
+			qh_completions(ehci, qh);
 			break;
 		}
 		break;
@@ -1003,6 +1004,8 @@ idle_timeout:
 		schedule_timeout_uninterruptible(1);
 		goto rescan;
 	case QH_STATE_IDLE:		/* fully unlinked */
+		if (qh->clearing_tt)
+			goto idle_timeout;
 		if (list_empty (&qh->qtd_list)) {
 			qh_put (qh);
 			break;
@@ -1030,12 +1033,14 @@ ehci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
 	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
 	struct ehci_qh		*qh;
 	int			eptype = usb_endpoint_type(&ep->desc);
+	int			epnum = usb_endpoint_num(&ep->desc);
+	int			is_out = usb_endpoint_dir_out(&ep->desc);
+	unsigned long		flags;
 
 	if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT)
 		return;
 
- rescan:
-	spin_lock_irq(&ehci->lock);
+	spin_lock_irqsave(&ehci->lock, flags);
 	qh = ep->hcpriv;
 
 	/* For Bulk and Interrupt endpoints we maintain the toggle state
@@ -1044,29 +1049,24 @@ ehci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
 	 * the toggle bit in the QH.
 	 */
 	if (qh) {
+		usb_settoggle(qh->dev, epnum, is_out, 0);
 		if (!list_empty(&qh->qtd_list)) {
 			WARN_ONCE(1, "clear_halt for a busy endpoint\n");
-		} else if (qh->qh_state == QH_STATE_IDLE) {
-			qh->hw_token &= ~cpu_to_hc32(ehci, QTD_TOGGLE);
-		} else {
-			/* It's not safe to write into the overlay area
-			 * while the QH is active.  Unlink it first and
-			 * wait for the unlink to complete.
+		} else if (qh->qh_state == QH_STATE_LINKED) {
+
+			/* The toggle value in the QH can't be updated
+			 * while the QH is active.  Unlink it now;
+			 * re-linking will call qh_refresh().
 			 */
-			if (qh->qh_state == QH_STATE_LINKED) {
-				if (eptype == USB_ENDPOINT_XFER_BULK) {
-					unlink_async(ehci, qh);
-				} else {
-					intr_deschedule(ehci, qh);
-					(void) qh_schedule(ehci, qh);
-				}
+			if (eptype == USB_ENDPOINT_XFER_BULK) {
+				unlink_async(ehci, qh);
+			} else {
+				intr_deschedule(ehci, qh);
+				(void) qh_schedule(ehci, qh);
 			}
-			spin_unlock_irq(&ehci->lock);
-			schedule_timeout_uninterruptible(1);
-			goto rescan;
 		}
 	}
-	spin_unlock_irq(&ehci->lock);
+	spin_unlock_irqrestore(&ehci->lock, flags);
 }
 
 static int ehci_get_frame (struct usb_hcd *hcd)
diff --git a/drivers/usb/host/ehci-ixp4xx.c b/drivers/usb/host/ehci-ixp4xx.c
index a44bb4a94954..89b7c70c6ed6 100644
--- a/drivers/usb/host/ehci-ixp4xx.c
+++ b/drivers/usb/host/ehci-ixp4xx.c
@@ -61,6 +61,8 @@ static const struct hc_driver ixp4xx_ehci_hc_driver = {
 #endif
 	.relinquish_port	= ehci_relinquish_port,
 	.port_handed_over	= ehci_port_handed_over,
+
+	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
 };
 
 static int ixp4xx_ehci_probe(struct platform_device *pdev)
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 770dd9aba62a..1d283e1b2b8d 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -105,6 +105,7 @@ static int ehci_orion_setup(struct usb_hcd *hcd)
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 	int retval;
 
+	ehci_reset(ehci);
 	retval = ehci_halt(ehci);
 	if (retval)
 		return retval;
@@ -118,7 +119,6 @@ static int ehci_orion_setup(struct usb_hcd *hcd)
 
 	hcd->has_tt = 1;
 
-	ehci_reset(ehci);
 	ehci_port_power(ehci, 0);
 
 	return retval;
@@ -165,6 +165,8 @@ static const struct hc_driver ehci_orion_hc_driver = {
 	.bus_resume = ehci_bus_resume,
 	.relinquish_port = ehci_relinquish_port,
 	.port_handed_over = ehci_port_handed_over,
+
+	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
 };
 
 static void __init
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index f3683e1da161..c2f1b7df918c 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -404,6 +404,8 @@ static const struct hc_driver ehci_pci_hc_driver = {
 	.bus_resume =		ehci_bus_resume,
 	.relinquish_port =	ehci_relinquish_port,
 	.port_handed_over =	ehci_port_handed_over,
+
+	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index fbd272288fc2..36f96da129f5 100644
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -79,6 +79,8 @@ static const struct hc_driver ehci_ppc_of_hc_driver = {
 #endif
 	.relinquish_port	= ehci_relinquish_port,
 	.port_handed_over	= ehci_port_handed_over,
+
+	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
 };
 
 
diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c
index 93f7035d00a1..1dee33b9139e 100644
--- a/drivers/usb/host/ehci-ps3.c
+++ b/drivers/usb/host/ehci-ps3.c
@@ -75,6 +75,8 @@ static const struct hc_driver ps3_ehci_hc_driver = {
 #endif
 	.relinquish_port	= ehci_relinquish_port,
 	.port_handed_over	= ehci_port_handed_over,
+
+	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
 };
 
 static int __devinit ps3_ehci_probe(struct ps3_system_bus_device *dev)
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 3192f683f807..7673554fa64d 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -93,6 +93,22 @@ qh_update (struct ehci_hcd *ehci, struct ehci_qh *qh, struct ehci_qtd *qtd)
 	qh->hw_qtd_next = QTD_NEXT(ehci, qtd->qtd_dma);
 	qh->hw_alt_next = EHCI_LIST_END(ehci);
 
+	/* Except for control endpoints, we make hardware maintain data
+	 * toggle (like OHCI) ... here (re)initialize the toggle in the QH,
+	 * and set the pseudo-toggle in udev. Only usb_clear_halt() will
+	 * ever clear it.
+	 */
+	if (!(qh->hw_info1 & cpu_to_hc32(ehci, 1 << 14))) {
+		unsigned	is_out, epnum;
+
+		is_out = !(qtd->hw_token & cpu_to_hc32(ehci, 1 << 8));
+		epnum = (hc32_to_cpup(ehci, &qh->hw_info1) >> 8) & 0x0f;
+		if (unlikely (!usb_gettoggle (qh->dev, epnum, is_out))) {
+			qh->hw_token &= ~cpu_to_hc32(ehci, QTD_TOGGLE);
+			usb_settoggle (qh->dev, epnum, is_out, 1);
+		}
+	}
+
 	/* HC must see latest qtd and qh data before we clear ACTIVE+HALT */
 	wmb ();
 	qh->hw_token &= cpu_to_hc32(ehci, QTD_TOGGLE | QTD_STS_PING);
@@ -123,6 +139,55 @@ qh_refresh (struct ehci_hcd *ehci, struct ehci_qh *qh)
 
 /*-------------------------------------------------------------------------*/
 
+static void qh_link_async(struct ehci_hcd *ehci, struct ehci_qh *qh);
+
+static void ehci_clear_tt_buffer_complete(struct usb_hcd *hcd,
+		struct usb_host_endpoint *ep)
+{
+	struct ehci_hcd		*ehci = hcd_to_ehci(hcd);
+	struct ehci_qh		*qh = ep->hcpriv;
+	unsigned long		flags;
+
+	spin_lock_irqsave(&ehci->lock, flags);
+	qh->clearing_tt = 0;
+	if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list)
+			&& HC_IS_RUNNING(hcd->state))
+		qh_link_async(ehci, qh);
+	spin_unlock_irqrestore(&ehci->lock, flags);
+}
+
+static void ehci_clear_tt_buffer(struct ehci_hcd *ehci, struct ehci_qh *qh,
+		struct urb *urb, u32 token)
+{
+
+	/* If an async split transaction gets an error or is unlinked,
+	 * the TT buffer may be left in an indeterminate state.  We
+	 * have to clear the TT buffer.
+	 *
+	 * Note: this routine is never called for Isochronous transfers.
+	 */
+	if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) {
+#ifdef DEBUG
+		struct usb_device *tt = urb->dev->tt->hub;
+		dev_dbg(&tt->dev,
+			"clear tt buffer port %d, a%d ep%d t%08x\n",
+			urb->dev->ttport, urb->dev->devnum,
+			usb_pipeendpoint(urb->pipe), token);
+#endif /* DEBUG */
+		if (!ehci_is_TDI(ehci)
+				|| urb->dev->tt->hub !=
+				   ehci_to_hcd(ehci)->self.root_hub) {
+			if (usb_hub_clear_tt_buffer(urb) == 0)
+				qh->clearing_tt = 1;
+		} else {
+
+			/* REVISIT ARC-derived cores don't clear the root
+			 * hub TT buffer in this way...
+			 */
+		}
+	}
+}
+
 static int qtd_copy_status (
 	struct ehci_hcd *ehci,
 	struct urb *urb,
@@ -149,6 +214,14 @@ static int qtd_copy_status (
 		if (token & QTD_STS_BABBLE) {
 			/* FIXME "must" disable babbling device's port too */
 			status = -EOVERFLOW;
+		/* CERR nonzero + halt --> stall */
+		} else if (QTD_CERR(token)) {
+			status = -EPIPE;
+
+		/* In theory, more than one of the following bits can be set
+		 * since they are sticky and the transaction is retried.
+		 * Which to test first is rather arbitrary.
+		 */
 		} else if (token & QTD_STS_MMF) {
 			/* fs/ls interrupt xfer missed the complete-split */
 			status = -EPROTO;
@@ -157,21 +230,15 @@ static int qtd_copy_status (
 				? -ENOSR  /* hc couldn't read data */
 				: -ECOMM; /* hc couldn't write data */
 		} else if (token & QTD_STS_XACT) {
-			/* timeout, bad crc, wrong PID, etc; retried */
-			if (QTD_CERR (token))
-				status = -EPIPE;
-			else {
-				ehci_dbg (ehci, "devpath %s ep%d%s 3strikes\n",
-					urb->dev->devpath,
-					usb_pipeendpoint (urb->pipe),
-					usb_pipein (urb->pipe) ? "in" : "out");
-				status = -EPROTO;
-			}
-		/* CERR nonzero + no errors + halt --> stall */
-		} else if (QTD_CERR (token))
-			status = -EPIPE;
-		else	/* unknown */
+			/* timeout, bad CRC, wrong PID, etc */
+			ehci_dbg(ehci, "devpath %s ep%d%s 3strikes\n",
+				urb->dev->devpath,
+				usb_pipeendpoint(urb->pipe),
+				usb_pipein(urb->pipe) ? "in" : "out");
 			status = -EPROTO;
+		} else {	/* unknown */
+			status = -EPROTO;
+		}
 
 		ehci_vdbg (ehci,
 			"dev%d ep%d%s qtd token %08x --> status %d\n",
@@ -179,28 +246,6 @@ static int qtd_copy_status (
 			usb_pipeendpoint (urb->pipe),
 			usb_pipein (urb->pipe) ? "in" : "out",
 			token, status);
-
-		/* if async CSPLIT failed, try cleaning out the TT buffer */
-		if (status != -EPIPE
-				&& urb->dev->tt
-				&& !usb_pipeint(urb->pipe)
-				&& ((token & QTD_STS_MMF) != 0
-					|| QTD_CERR(token) == 0)
-				&& (!ehci_is_TDI(ehci)
-			                || urb->dev->tt->hub !=
-					   ehci_to_hcd(ehci)->self.root_hub)) {
-#ifdef DEBUG
-			struct usb_device *tt = urb->dev->tt->hub;
-			dev_dbg (&tt->dev,
-				"clear tt buffer port %d, a%d ep%d t%08x\n",
-				urb->dev->ttport, urb->dev->devnum,
-				usb_pipeendpoint (urb->pipe), token);
-#endif /* DEBUG */
-			/* REVISIT ARC-derived cores don't clear the root
-			 * hub TT buffer in this way...
-			 */
-			usb_hub_tt_clear_buffer (urb->dev, urb->pipe);
-		}
 	}
 
 	return status;
@@ -330,12 +375,11 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
 				 */
 				if ((token & QTD_STS_XACT) &&
 						QTD_CERR(token) == 0 &&
-						--qh->xacterrs > 0 &&
+						++qh->xacterrs < QH_XACTERR_MAX &&
 						!urb->unlinked) {
 					ehci_dbg(ehci,
 	"detected XactErr len %zu/%zu retry %d\n",
-	qtd->length - QTD_LENGTH(token), qtd->length,
-	QH_XACTERR_MAX - qh->xacterrs);
+	qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs);
 
 					/* reset the token in the qtd and the
 					 * qh overlay (which still contains
@@ -391,9 +435,16 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh)
 			/* qh unlinked; token in overlay may be most current */
 			if (state == QH_STATE_IDLE
 					&& cpu_to_hc32(ehci, qtd->qtd_dma)
-						== qh->hw_current)
+						== qh->hw_current) {
 				token = hc32_to_cpu(ehci, qh->hw_token);
 
+				/* An unlink may leave an incomplete
+				 * async transaction in the TT buffer.
+				 * We have to clear it.
+				 */
+				ehci_clear_tt_buffer(ehci, qh, urb, token);
+			}
+
 			/* force halt for unlinked or blocked qh, so we'll
 			 * patch the qh later and so that completions can't
 			 * activate it while we "know" it's stopped.
@@ -419,6 +470,13 @@ halt:
 					&& (qtd->hw_alt_next
 						& EHCI_LIST_END(ehci)))
 				last_status = -EINPROGRESS;
+
+			/* As part of low/full-speed endpoint-halt processing
+			 * we must clear the TT buffer (11.17.5).
+			 */
+			if (unlikely(last_status != -EINPROGRESS &&
+					last_status != -EREMOTEIO))
+				ehci_clear_tt_buffer(ehci, qh, urb, token);
 		}
 
 		/* if we're removing something not at the queue head,
@@ -435,7 +493,7 @@ halt:
 		last = qtd;
 
 		/* reinit the xacterr counter for the next qtd */
-		qh->xacterrs = QH_XACTERR_MAX;
+		qh->xacterrs = 0;
 	}
 
 	/* last urb's completion might still need calling */
@@ -834,6 +892,7 @@ done:
 	qh->qh_state = QH_STATE_IDLE;
 	qh->hw_info1 = cpu_to_hc32(ehci, info1);
 	qh->hw_info2 = cpu_to_hc32(ehci, info2);
+	usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe), !is_input, 1);
 	qh_refresh (ehci, qh);
 	return qh;
 }
@@ -847,6 +906,10 @@ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 	__hc32		dma = QH_NEXT(ehci, qh->qh_dma);
 	struct ehci_qh	*head;
 
+	/* Don't link a QH if there's a Clear-TT-Buffer pending */
+	if (unlikely(qh->clearing_tt))
+		return;
+
 	/* (re)start the async schedule? */
 	head = ehci->async;
 	timer_action_done (ehci, TIMER_ASYNC_OFF);
@@ -864,7 +927,7 @@ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 		}
 	}
 
-	/* clear halt and maybe recover from silicon quirk */
+	/* clear halt and/or toggle; and maybe recover from silicon quirk */
 	if (qh->qh_state == QH_STATE_IDLE)
 		qh_refresh (ehci, qh);
 
@@ -876,7 +939,8 @@ static void qh_link_async (struct ehci_hcd *ehci, struct ehci_qh *qh)
 	head->qh_next.qh = qh;
 	head->hw_next = dma;
 
-	qh->xacterrs = QH_XACTERR_MAX;
+	qh_get(qh);
+	qh->xacterrs = 0;
 	qh->qh_state = QH_STATE_LINKED;
 	/* qtd completions reported later by interrupt */
 }
@@ -1016,7 +1080,7 @@ submit_async (
 	 * the HC and TT handle it when the TT has a buffer ready.
 	 */
 	if (likely (qh->qh_state == QH_STATE_IDLE))
-		qh_link_async (ehci, qh_get (qh));
+		qh_link_async(ehci, qh);
  done:
 	spin_unlock_irqrestore (&ehci->lock, flags);
 	if (unlikely (qh == NULL))
@@ -1051,8 +1115,6 @@ static void end_unlink_async (struct ehci_hcd *ehci)
 			&& HC_IS_RUNNING (ehci_to_hcd(ehci)->state))
 		qh_link_async (ehci, qh);
 	else {
-		qh_put (qh);		// refcount from async list
-
 		/* it's not free to turn the async schedule on/off; leave it
 		 * active but idle for a while once it empties.
 		 */
@@ -1060,6 +1122,7 @@ static void end_unlink_async (struct ehci_hcd *ehci)
 				&& ehci->async->qh_next.qh == NULL)
 			timer_action (ehci, TIMER_ASYNC_OFF);
 	}
+	qh_put(qh);			/* refcount from async list */
 
 	if (next) {
 		ehci->reclaim = NULL;
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 9d1babc7ff65..edd61ee90323 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -542,6 +542,7 @@ static int qh_link_periodic (struct ehci_hcd *ehci, struct ehci_qh *qh)
 		}
 	}
 	qh->qh_state = QH_STATE_LINKED;
+	qh->xacterrs = 0;
 	qh_get (qh);
 
 	/* update per-qh bandwidth for usbfs */
@@ -1619,11 +1620,14 @@ itd_complete (
 				desc->status = -EPROTO;
 
 			/* HC need not update length with this error */
-			if (!(t & EHCI_ISOC_BABBLE))
-				desc->actual_length = EHCI_ITD_LENGTH (t);
+			if (!(t & EHCI_ISOC_BABBLE)) {
+				desc->actual_length = EHCI_ITD_LENGTH(t);
+				urb->actual_length += desc->actual_length;
+			}
 		} else if (likely ((t & EHCI_ISOC_ACTIVE) == 0)) {
 			desc->status = 0;
-			desc->actual_length = EHCI_ITD_LENGTH (t);
+			desc->actual_length = EHCI_ITD_LENGTH(t);
+			urb->actual_length += desc->actual_length;
 		} else {
 			/* URB was too late */
 			desc->status = -EXDEV;
@@ -2014,7 +2018,8 @@ sitd_complete (
 			desc->status = -EPROTO;
 	} else {
 		desc->status = 0;
-		desc->actual_length = desc->length - SITD_LENGTH (t);
+		desc->actual_length = desc->length - SITD_LENGTH(t);
+		urb->actual_length += desc->actual_length;
 	}
 	stream->depth -= stream->interval << 3;
 
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 90ad3395bb21..2bfff30f4704 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -354,7 +354,9 @@ struct ehci_qh {
 	unsigned short		period;		/* polling interval */
 	unsigned short		start;		/* where polling starts */
 #define NO_FRAME ((unsigned short)~0)			/* pick new start */
+
 	struct usb_device	*dev;		/* access to TT */
+	unsigned		clearing_tt:1;	/* Clear-TT-Buf in progress */
 } __attribute__ ((aligned (32)));
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/fhci-sched.c b/drivers/usb/host/fhci-sched.c
index bb63b68ddb77..62a226b61670 100644
--- a/drivers/usb/host/fhci-sched.c
+++ b/drivers/usb/host/fhci-sched.c
@@ -576,9 +576,7 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd)
 			out_be16(&usb->fhci->regs->usb_event,
 				 usb->saved_msk);
 		} else if (usb->port_status == FHCI_PORT_DISABLED) {
-			if (fhci_ioports_check_bus_state(fhci) == 1 &&
-					usb->port_status != FHCI_PORT_LOW &&
-					usb->port_status != FHCI_PORT_FULL)
+			if (fhci_ioports_check_bus_state(fhci) == 1)
 				fhci_device_connected_interrupt(fhci);
 		}
 		usb_er &= ~USB_E_RESET_MASK;
@@ -605,9 +603,7 @@ irqreturn_t fhci_irq(struct usb_hcd *hcd)
 	}
 
 	if (usb_er & USB_E_IDLE_MASK) {
-		if (usb->port_status == FHCI_PORT_DISABLED &&
-				usb->port_status != FHCI_PORT_LOW &&
-				usb->port_status != FHCI_PORT_FULL) {
+		if (usb->port_status == FHCI_PORT_DISABLED) {
 			usb_er &= ~USB_E_RESET_MASK;
 			fhci_device_connected_interrupt(fhci);
 		} else if (usb->port_status ==
diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c
index 3fa3a1702796..d4feebfc63bd 100644
--- a/drivers/usb/host/isp1760-if.c
+++ b/drivers/usb/host/isp1760-if.c
@@ -361,7 +361,7 @@ static int __devexit isp1760_plat_remove(struct platform_device *pdev)
 
 static struct platform_driver isp1760_plat_driver = {
 	.probe	= isp1760_plat_probe,
-	.remove	= isp1760_plat_remove,
+	.remove	= __devexit_p(isp1760_plat_remove),
 	.driver	= {
 		.name	= "isp1760",
 	},
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index f3aaba35e912..83cbecd2a1ed 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -282,6 +282,7 @@ static int ohci_omap_init(struct usb_hcd *hcd)
 static void ohci_omap_stop(struct usb_hcd *hcd)
 {
 	dev_dbg(hcd->self.controller, "stopping USB Controller\n");
+	ohci_stop(hcd);
 	omap_ohci_clock_power(0);
 }
 
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index 56976cc0352a..e18f74946e68 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -26,7 +26,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
-#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/timer.h>
diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c
index 2501c571f855..705e34324156 100644
--- a/drivers/usb/host/xhci-dbg.c
+++ b/drivers/usb/host/xhci-dbg.c
@@ -173,6 +173,7 @@ void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int
 {
 	void *addr;
 	u32 temp;
+	u64 temp_64;
 
 	addr = &ir_set->irq_pending;
 	temp = xhci_readl(xhci, addr);
@@ -200,25 +201,15 @@ void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int
 		xhci_dbg(xhci, "  WARN: %p: ir_set.rsvd = 0x%x\n",
 				addr, (unsigned int)temp);
 
-	addr = &ir_set->erst_base[0];
-	temp = xhci_readl(xhci, addr);
-	xhci_dbg(xhci, "  %p: ir_set.erst_base[0] = 0x%x\n",
-			addr, (unsigned int) temp);
-
-	addr = &ir_set->erst_base[1];
-	temp = xhci_readl(xhci, addr);
-	xhci_dbg(xhci, "  %p: ir_set.erst_base[1] = 0x%x\n",
-			addr, (unsigned int) temp);
+	addr = &ir_set->erst_base;
+	temp_64 = xhci_read_64(xhci, addr);
+	xhci_dbg(xhci, "  %p: ir_set.erst_base = @%08llx\n",
+			addr, temp_64);
 
-	addr = &ir_set->erst_dequeue[0];
-	temp = xhci_readl(xhci, addr);
-	xhci_dbg(xhci, "  %p: ir_set.erst_dequeue[0] = 0x%x\n",
-			addr, (unsigned int) temp);
-
-	addr = &ir_set->erst_dequeue[1];
-	temp = xhci_readl(xhci, addr);
-	xhci_dbg(xhci, "  %p: ir_set.erst_dequeue[1] = 0x%x\n",
-			addr, (unsigned int) temp);
+	addr = &ir_set->erst_dequeue;
+	temp_64 = xhci_read_64(xhci, addr);
+	xhci_dbg(xhci, "  %p: ir_set.erst_dequeue = @%08llx\n",
+			addr, temp_64);
 }
 
 void xhci_print_run_regs(struct xhci_hcd *xhci)
@@ -268,8 +259,7 @@ void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb)
 		xhci_dbg(xhci, "Link TRB:\n");
 		xhci_print_trb_offsets(xhci, trb);
 
-		address = trb->link.segment_ptr[0] +
-			(((u64) trb->link.segment_ptr[1]) << 32);
+		address = trb->link.segment_ptr;
 		xhci_dbg(xhci, "Next ring segment DMA address = 0x%llx\n", address);
 
 		xhci_dbg(xhci, "Interrupter target = 0x%x\n",
@@ -282,8 +272,7 @@ void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb)
 				(unsigned int) (trb->link.control & TRB_NO_SNOOP));
 		break;
 	case TRB_TYPE(TRB_TRANSFER):
-		address = trb->trans_event.buffer[0] +
-			(((u64) trb->trans_event.buffer[1]) << 32);
+		address = trb->trans_event.buffer;
 		/*
 		 * FIXME: look at flags to figure out if it's an address or if
 		 * the data is directly in the buffer field.
@@ -291,8 +280,7 @@ void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb)
 		xhci_dbg(xhci, "DMA address or buffer contents= %llu\n", address);
 		break;
 	case TRB_TYPE(TRB_COMPLETION):
-		address = trb->event_cmd.cmd_trb[0] +
-			(((u64) trb->event_cmd.cmd_trb[1]) << 32);
+		address = trb->event_cmd.cmd_trb;
 		xhci_dbg(xhci, "Command TRB pointer = %llu\n", address);
 		xhci_dbg(xhci, "Completion status = %u\n",
 				(unsigned int) GET_COMP_CODE(trb->event_cmd.status));
@@ -328,8 +316,8 @@ void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg)
 	for (i = 0; i < TRBS_PER_SEGMENT; ++i) {
 		trb = &seg->trbs[i];
 		xhci_dbg(xhci, "@%08x %08x %08x %08x %08x\n", addr,
-				(unsigned int) trb->link.segment_ptr[0],
-				(unsigned int) trb->link.segment_ptr[1],
+				lower_32_bits(trb->link.segment_ptr),
+				upper_32_bits(trb->link.segment_ptr),
 				(unsigned int) trb->link.intr_target,
 				(unsigned int) trb->link.control);
 		addr += sizeof(*trb);
@@ -386,8 +374,8 @@ void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst)
 		entry = &erst->entries[i];
 		xhci_dbg(xhci, "@%08x %08x %08x %08x %08x\n",
 				(unsigned int) addr,
-				(unsigned int) entry->seg_addr[0],
-				(unsigned int) entry->seg_addr[1],
+				lower_32_bits(entry->seg_addr),
+				upper_32_bits(entry->seg_addr),
 				(unsigned int) entry->seg_size,
 				(unsigned int) entry->rsvd);
 		addr += sizeof(*entry);
@@ -396,90 +384,147 @@ void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst)
 
 void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci)
 {
-	u32 val;
+	u64 val;
 
-	val = xhci_readl(xhci, &xhci->op_regs->cmd_ring[0]);
-	xhci_dbg(xhci, "// xHC command ring deq ptr low bits + flags = 0x%x\n", val);
-	val = xhci_readl(xhci, &xhci->op_regs->cmd_ring[1]);
-	xhci_dbg(xhci, "// xHC command ring deq ptr high bits = 0x%x\n", val);
+	val = xhci_read_64(xhci, &xhci->op_regs->cmd_ring);
+	xhci_dbg(xhci, "// xHC command ring deq ptr low bits + flags = @%08x\n",
+			lower_32_bits(val));
+	xhci_dbg(xhci, "// xHC command ring deq ptr high bits = @%08x\n",
+			upper_32_bits(val));
 }
 
-void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_device_control *ctx, dma_addr_t dma, unsigned int last_ep)
+/* Print the last 32 bytes for 64-byte contexts */
+static void dbg_rsvd64(struct xhci_hcd *xhci, u64 *ctx, dma_addr_t dma)
+{
+	int i;
+	for (i = 0; i < 4; ++i) {
+		xhci_dbg(xhci, "@%p (virt) @%08llx "
+			 "(dma) %#08llx - rsvd64[%d]\n",
+			 &ctx[4 + i], (unsigned long long)dma,
+			 ctx[4 + i], i);
+		dma += 8;
+	}
+}
+
+void xhci_dbg_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx)
 {
-	int i, j;
-	int last_ep_ctx = 31;
 	/* Fields are 32 bits wide, DMA addresses are in bytes */
 	int field_size = 32 / 8;
+	int i;
 
-	xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - drop flags\n",
-			&ctx->drop_flags, (unsigned long long)dma,
-			ctx->drop_flags);
-	dma += field_size;
-	xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - add flags\n",
-			&ctx->add_flags, (unsigned long long)dma,
-			ctx->add_flags);
-	dma += field_size;
-	for (i = 0; i > 6; ++i) {
-		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd[%d]\n",
-				&ctx->rsvd[i], (unsigned long long)dma,
-				ctx->rsvd[i], i);
-		dma += field_size;
-	}
+	struct xhci_slot_ctx *slot_ctx = xhci_get_slot_ctx(xhci, ctx);
+	dma_addr_t dma = ctx->dma + ((unsigned long)slot_ctx - (unsigned long)ctx);
+	int csz = HCC_64BYTE_CONTEXT(xhci->hcc_params);
 
 	xhci_dbg(xhci, "Slot Context:\n");
 	xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_info\n",
-			&ctx->slot.dev_info,
-			(unsigned long long)dma, ctx->slot.dev_info);
+			&slot_ctx->dev_info,
+			(unsigned long long)dma, slot_ctx->dev_info);
 	dma += field_size;
 	xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_info2\n",
-			&ctx->slot.dev_info2,
-			(unsigned long long)dma, ctx->slot.dev_info2);
+			&slot_ctx->dev_info2,
+			(unsigned long long)dma, slot_ctx->dev_info2);
 	dma += field_size;
 	xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - tt_info\n",
-			&ctx->slot.tt_info,
-			(unsigned long long)dma, ctx->slot.tt_info);
+			&slot_ctx->tt_info,
+			(unsigned long long)dma, slot_ctx->tt_info);
 	dma += field_size;
 	xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_state\n",
-			&ctx->slot.dev_state,
-			(unsigned long long)dma, ctx->slot.dev_state);
+			&slot_ctx->dev_state,
+			(unsigned long long)dma, slot_ctx->dev_state);
 	dma += field_size;
-	for (i = 0; i > 4; ++i) {
+	for (i = 0; i < 4; ++i) {
 		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd[%d]\n",
-				&ctx->slot.reserved[i], (unsigned long long)dma,
-				ctx->slot.reserved[i], i);
+				&slot_ctx->reserved[i], (unsigned long long)dma,
+				slot_ctx->reserved[i], i);
 		dma += field_size;
 	}
 
+	if (csz)
+		dbg_rsvd64(xhci, (u64 *)slot_ctx, dma);
+}
+
+void xhci_dbg_ep_ctx(struct xhci_hcd *xhci,
+		     struct xhci_container_ctx *ctx,
+		     unsigned int last_ep)
+{
+	int i, j;
+	int last_ep_ctx = 31;
+	/* Fields are 32 bits wide, DMA addresses are in bytes */
+	int field_size = 32 / 8;
+	int csz = HCC_64BYTE_CONTEXT(xhci->hcc_params);
+
 	if (last_ep < 31)
 		last_ep_ctx = last_ep + 1;
 	for (i = 0; i < last_ep_ctx; ++i) {
+		struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, ctx, i);
+		dma_addr_t dma = ctx->dma +
+			((unsigned long)ep_ctx - (unsigned long)ctx);
+
 		xhci_dbg(xhci, "Endpoint %02d Context:\n", i);
 		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - ep_info\n",
-				&ctx->ep[i].ep_info,
-				(unsigned long long)dma, ctx->ep[i].ep_info);
+				&ep_ctx->ep_info,
+				(unsigned long long)dma, ep_ctx->ep_info);
 		dma += field_size;
 		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - ep_info2\n",
-				&ctx->ep[i].ep_info2,
-				(unsigned long long)dma, ctx->ep[i].ep_info2);
-		dma += field_size;
-		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - deq[0]\n",
-				&ctx->ep[i].deq[0],
-				(unsigned long long)dma, ctx->ep[i].deq[0]);
-		dma += field_size;
-		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - deq[1]\n",
-				&ctx->ep[i].deq[1],
-				(unsigned long long)dma, ctx->ep[i].deq[1]);
+				&ep_ctx->ep_info2,
+				(unsigned long long)dma, ep_ctx->ep_info2);
 		dma += field_size;
+		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08llx - deq\n",
+				&ep_ctx->deq,
+				(unsigned long long)dma, ep_ctx->deq);
+		dma += 2*field_size;
 		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - tx_info\n",
-				&ctx->ep[i].tx_info,
-				(unsigned long long)dma, ctx->ep[i].tx_info);
+				&ep_ctx->tx_info,
+				(unsigned long long)dma, ep_ctx->tx_info);
 		dma += field_size;
 		for (j = 0; j < 3; ++j) {
 			xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd[%d]\n",
-					&ctx->ep[i].reserved[j],
+					&ep_ctx->reserved[j],
 					(unsigned long long)dma,
-					ctx->ep[i].reserved[j], j);
+					ep_ctx->reserved[j], j);
+			dma += field_size;
+		}
+
+		if (csz)
+			dbg_rsvd64(xhci, (u64 *)ep_ctx, dma);
+	}
+}
+
+void xhci_dbg_ctx(struct xhci_hcd *xhci,
+		  struct xhci_container_ctx *ctx,
+		  unsigned int last_ep)
+{
+	int i;
+	/* Fields are 32 bits wide, DMA addresses are in bytes */
+	int field_size = 32 / 8;
+	struct xhci_slot_ctx *slot_ctx;
+	dma_addr_t dma = ctx->dma;
+	int csz = HCC_64BYTE_CONTEXT(xhci->hcc_params);
+
+	if (ctx->type == XHCI_CTX_TYPE_INPUT) {
+		struct xhci_input_control_ctx *ctrl_ctx =
+			xhci_get_input_control_ctx(xhci, ctx);
+		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - drop flags\n",
+			 &ctrl_ctx->drop_flags, (unsigned long long)dma,
+			 ctrl_ctx->drop_flags);
+		dma += field_size;
+		xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - add flags\n",
+			 &ctrl_ctx->add_flags, (unsigned long long)dma,
+			 ctrl_ctx->add_flags);
+		dma += field_size;
+		for (i = 0; i < 6; ++i) {
+			xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd2[%d]\n",
+				 &ctrl_ctx->rsvd2[i], (unsigned long long)dma,
+				 ctrl_ctx->rsvd2[i], i);
 			dma += field_size;
 		}
+
+		if (csz)
+			dbg_rsvd64(xhci, (u64 *)ctrl_ctx, dma);
 	}
+
+	slot_ctx = xhci_get_slot_ctx(xhci, ctx);
+	xhci_dbg_slot_ctx(xhci, ctx);
+	xhci_dbg_ep_ctx(xhci, ctx, last_ep);
 }
diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci-hcd.c
index dba3e07ccd09..816c39caca1c 100644
--- a/drivers/usb/host/xhci-hcd.c
+++ b/drivers/usb/host/xhci-hcd.c
@@ -103,7 +103,10 @@ int xhci_reset(struct xhci_hcd *xhci)
 	u32 state;
 
 	state = xhci_readl(xhci, &xhci->op_regs->status);
-	BUG_ON((state & STS_HALT) == 0);
+	if ((state & STS_HALT) == 0) {
+		xhci_warn(xhci, "Host controller not halted, aborting reset.\n");
+		return 0;
+	}
 
 	xhci_dbg(xhci, "// Reset the HC\n");
 	command = xhci_readl(xhci, &xhci->op_regs->command);
@@ -226,6 +229,7 @@ int xhci_init(struct usb_hcd *hcd)
 static void xhci_work(struct xhci_hcd *xhci)
 {
 	u32 temp;
+	u64 temp_64;
 
 	/*
 	 * Clear the op reg interrupt status first,
@@ -248,9 +252,9 @@ static void xhci_work(struct xhci_hcd *xhci)
 	/* FIXME this should be a delayed service routine that clears the EHB */
 	xhci_handle_event(xhci);
 
-	/* Clear the event handler busy flag; the event ring should be empty. */
-	temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[0]);
-	xhci_writel(xhci, temp & ~ERST_EHB, &xhci->ir_set->erst_dequeue[0]);
+	/* Clear the event handler busy flag (RW1C); the event ring should be empty. */
+	temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue);
+	xhci_write_64(xhci, temp_64 | ERST_EHB, &xhci->ir_set->erst_dequeue);
 	/* Flush posted writes -- FIXME is this necessary? */
 	xhci_readl(xhci, &xhci->ir_set->irq_pending);
 }
@@ -266,19 +270,34 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd)
 {
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 	u32 temp, temp2;
+	union xhci_trb *trb;
 
 	spin_lock(&xhci->lock);
+	trb = xhci->event_ring->dequeue;
 	/* Check if the xHC generated the interrupt, or the irq is shared */
 	temp = xhci_readl(xhci, &xhci->op_regs->status);
 	temp2 = xhci_readl(xhci, &xhci->ir_set->irq_pending);
+	if (temp == 0xffffffff && temp2 == 0xffffffff)
+		goto hw_died;
+
 	if (!(temp & STS_EINT) && !ER_IRQ_PENDING(temp2)) {
 		spin_unlock(&xhci->lock);
 		return IRQ_NONE;
 	}
+	xhci_dbg(xhci, "op reg status = %08x\n", temp);
+	xhci_dbg(xhci, "ir set irq_pending = %08x\n", temp2);
+	xhci_dbg(xhci, "Event ring dequeue ptr:\n");
+	xhci_dbg(xhci, "@%llx %08x %08x %08x %08x\n",
+			(unsigned long long)xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, trb),
+			lower_32_bits(trb->link.segment_ptr),
+			upper_32_bits(trb->link.segment_ptr),
+			(unsigned int) trb->link.intr_target,
+			(unsigned int) trb->link.control);
 
 	if (temp & STS_FATAL) {
 		xhci_warn(xhci, "WARNING: Host System Error\n");
 		xhci_halt(xhci);
+hw_died:
 		xhci_to_hcd(xhci)->state = HC_STATE_HALT;
 		spin_unlock(&xhci->lock);
 		return -ESHUTDOWN;
@@ -295,6 +314,7 @@ void xhci_event_ring_work(unsigned long arg)
 {
 	unsigned long flags;
 	int temp;
+	u64 temp_64;
 	struct xhci_hcd *xhci = (struct xhci_hcd *) arg;
 	int i, j;
 
@@ -311,9 +331,9 @@ void xhci_event_ring_work(unsigned long arg)
 	xhci_dbg(xhci, "Event ring:\n");
 	xhci_debug_segment(xhci, xhci->event_ring->deq_seg);
 	xhci_dbg_ring_ptrs(xhci, xhci->event_ring);
-	temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[0]);
-	temp &= ERST_PTR_MASK;
-	xhci_dbg(xhci, "ERST deq = 0x%x\n", temp);
+	temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue);
+	temp_64 &= ~ERST_PTR_MASK;
+	xhci_dbg(xhci, "ERST deq = 64'h%0lx\n", (long unsigned int) temp_64);
 	xhci_dbg(xhci, "Command ring:\n");
 	xhci_debug_segment(xhci, xhci->cmd_ring->deq_seg);
 	xhci_dbg_ring_ptrs(xhci, xhci->cmd_ring);
@@ -356,6 +376,7 @@ void xhci_event_ring_work(unsigned long arg)
 int xhci_run(struct usb_hcd *hcd)
 {
 	u32 temp;
+	u64 temp_64;
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 	void (*doorbell)(struct xhci_hcd *) = NULL;
 
@@ -382,6 +403,20 @@ int xhci_run(struct usb_hcd *hcd)
 	add_timer(&xhci->event_ring_timer);
 #endif
 
+	xhci_dbg(xhci, "Command ring memory map follows:\n");
+	xhci_debug_ring(xhci, xhci->cmd_ring);
+	xhci_dbg_ring_ptrs(xhci, xhci->cmd_ring);
+	xhci_dbg_cmd_ptrs(xhci);
+
+	xhci_dbg(xhci, "ERST memory map follows:\n");
+	xhci_dbg_erst(xhci, &xhci->erst);
+	xhci_dbg(xhci, "Event ring:\n");
+	xhci_debug_ring(xhci, xhci->event_ring);
+	xhci_dbg_ring_ptrs(xhci, xhci->event_ring);
+	temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue);
+	temp_64 &= ~ERST_PTR_MASK;
+	xhci_dbg(xhci, "ERST deq = 64'h%0lx\n", (long unsigned int) temp_64);
+
 	xhci_dbg(xhci, "// Set the interrupt modulation register\n");
 	temp = xhci_readl(xhci, &xhci->ir_set->irq_control);
 	temp &= ~ER_IRQ_INTERVAL_MASK;
@@ -406,22 +441,6 @@ int xhci_run(struct usb_hcd *hcd)
 	if (NUM_TEST_NOOPS > 0)
 		doorbell = xhci_setup_one_noop(xhci);
 
-	xhci_dbg(xhci, "Command ring memory map follows:\n");
-	xhci_debug_ring(xhci, xhci->cmd_ring);
-	xhci_dbg_ring_ptrs(xhci, xhci->cmd_ring);
-	xhci_dbg_cmd_ptrs(xhci);
-
-	xhci_dbg(xhci, "ERST memory map follows:\n");
-	xhci_dbg_erst(xhci, &xhci->erst);
-	xhci_dbg(xhci, "Event ring:\n");
-	xhci_debug_ring(xhci, xhci->event_ring);
-	xhci_dbg_ring_ptrs(xhci, xhci->event_ring);
-	temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[0]);
-	temp &= ERST_PTR_MASK;
-	xhci_dbg(xhci, "ERST deq = 0x%x\n", temp);
-	temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[1]);
-	xhci_dbg(xhci, "ERST deq upper = 0x%x\n", temp);
-
 	temp = xhci_readl(xhci, &xhci->op_regs->command);
 	temp |= (CMD_RUN);
 	xhci_dbg(xhci, "// Turn on HC, cmd = 0x%x.\n",
@@ -601,10 +620,13 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)
 		goto exit;
 	}
 	if (usb_endpoint_xfer_control(&urb->ep->desc))
-		ret = xhci_queue_ctrl_tx(xhci, mem_flags, urb,
+		/* We have a spinlock and interrupts disabled, so we must pass
+		 * atomic context to this function, which may allocate memory.
+		 */
+		ret = xhci_queue_ctrl_tx(xhci, GFP_ATOMIC, urb,
 				slot_id, ep_index);
 	else if (usb_endpoint_xfer_bulk(&urb->ep->desc))
-		ret = xhci_queue_bulk_tx(xhci, mem_flags, urb,
+		ret = xhci_queue_bulk_tx(xhci, GFP_ATOMIC, urb,
 				slot_id, ep_index);
 	else
 		ret = -EINVAL;
@@ -661,8 +683,12 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 		goto done;
 
 	xhci_dbg(xhci, "Cancel URB %p\n", urb);
+	xhci_dbg(xhci, "Event ring:\n");
+	xhci_debug_ring(xhci, xhci->event_ring);
 	ep_index = xhci_get_endpoint_index(&urb->ep->desc);
 	ep_ring = xhci->devs[urb->dev->slot_id]->ep_rings[ep_index];
+	xhci_dbg(xhci, "Endpoint ring:\n");
+	xhci_debug_ring(xhci, ep_ring);
 	td = (struct xhci_td *) urb->hcpriv;
 
 	ep_ring->cancels_pending++;
@@ -696,7 +722,9 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 		struct usb_host_endpoint *ep)
 {
 	struct xhci_hcd *xhci;
-	struct xhci_device_control *in_ctx;
+	struct xhci_container_ctx *in_ctx, *out_ctx;
+	struct xhci_input_control_ctx *ctrl_ctx;
+	struct xhci_slot_ctx *slot_ctx;
 	unsigned int last_ctx;
 	unsigned int ep_index;
 	struct xhci_ep_ctx *ep_ctx;
@@ -724,31 +752,34 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 	}
 
 	in_ctx = xhci->devs[udev->slot_id]->in_ctx;
+	out_ctx = xhci->devs[udev->slot_id]->out_ctx;
+	ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx);
 	ep_index = xhci_get_endpoint_index(&ep->desc);
-	ep_ctx = &xhci->devs[udev->slot_id]->out_ctx->ep[ep_index];
+	ep_ctx = xhci_get_ep_ctx(xhci, out_ctx, ep_index);
 	/* If the HC already knows the endpoint is disabled,
 	 * or the HCD has noted it is disabled, ignore this request
 	 */
 	if ((ep_ctx->ep_info & EP_STATE_MASK) == EP_STATE_DISABLED ||
-			in_ctx->drop_flags & xhci_get_endpoint_flag(&ep->desc)) {
+			ctrl_ctx->drop_flags & xhci_get_endpoint_flag(&ep->desc)) {
 		xhci_warn(xhci, "xHCI %s called with disabled ep %p\n",
 				__func__, ep);
 		return 0;
 	}
 
-	in_ctx->drop_flags |= drop_flag;
-	new_drop_flags = in_ctx->drop_flags;
+	ctrl_ctx->drop_flags |= drop_flag;
+	new_drop_flags = ctrl_ctx->drop_flags;
 
-	in_ctx->add_flags = ~drop_flag;
-	new_add_flags = in_ctx->add_flags;
+	ctrl_ctx->add_flags = ~drop_flag;
+	new_add_flags = ctrl_ctx->add_flags;
 
-	last_ctx = xhci_last_valid_endpoint(in_ctx->add_flags);
+	last_ctx = xhci_last_valid_endpoint(ctrl_ctx->add_flags);
+	slot_ctx = xhci_get_slot_ctx(xhci, in_ctx);
 	/* Update the last valid endpoint context, if we deleted the last one */
-	if ((in_ctx->slot.dev_info & LAST_CTX_MASK) > LAST_CTX(last_ctx)) {
-		in_ctx->slot.dev_info &= ~LAST_CTX_MASK;
-		in_ctx->slot.dev_info |= LAST_CTX(last_ctx);
+	if ((slot_ctx->dev_info & LAST_CTX_MASK) > LAST_CTX(last_ctx)) {
+		slot_ctx->dev_info &= ~LAST_CTX_MASK;
+		slot_ctx->dev_info |= LAST_CTX(last_ctx);
 	}
-	new_slot_info = in_ctx->slot.dev_info;
+	new_slot_info = slot_ctx->dev_info;
 
 	xhci_endpoint_zero(xhci, xhci->devs[udev->slot_id], ep);
 
@@ -778,17 +809,22 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 		struct usb_host_endpoint *ep)
 {
 	struct xhci_hcd *xhci;
-	struct xhci_device_control *in_ctx;
+	struct xhci_container_ctx *in_ctx, *out_ctx;
 	unsigned int ep_index;
 	struct xhci_ep_ctx *ep_ctx;
+	struct xhci_slot_ctx *slot_ctx;
+	struct xhci_input_control_ctx *ctrl_ctx;
 	u32 added_ctxs;
 	unsigned int last_ctx;
 	u32 new_add_flags, new_drop_flags, new_slot_info;
 	int ret = 0;
 
 	ret = xhci_check_args(hcd, udev, ep, 1, __func__);
-	if (ret <= 0)
+	if (ret <= 0) {
+		/* So we won't queue a reset ep command for a root hub */
+		ep->hcpriv = NULL;
 		return ret;
+	}
 	xhci = hcd_to_xhci(hcd);
 
 	added_ctxs = xhci_get_endpoint_flag(&ep->desc);
@@ -810,12 +846,14 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 	}
 
 	in_ctx = xhci->devs[udev->slot_id]->in_ctx;
+	out_ctx = xhci->devs[udev->slot_id]->out_ctx;
+	ctrl_ctx = xhci_get_input_control_ctx(xhci, in_ctx);
 	ep_index = xhci_get_endpoint_index(&ep->desc);
-	ep_ctx = &xhci->devs[udev->slot_id]->out_ctx->ep[ep_index];
+	ep_ctx = xhci_get_ep_ctx(xhci, out_ctx, ep_index);
 	/* If the HCD has already noted the endpoint is enabled,
 	 * ignore this request.
 	 */
-	if (in_ctx->add_flags & xhci_get_endpoint_flag(&ep->desc)) {
+	if (ctrl_ctx->add_flags & xhci_get_endpoint_flag(&ep->desc)) {
 		xhci_warn(xhci, "xHCI %s called with enabled ep %p\n",
 				__func__, ep);
 		return 0;
@@ -833,8 +871,8 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 		return -ENOMEM;
 	}
 
-	in_ctx->add_flags |= added_ctxs;
-	new_add_flags = in_ctx->add_flags;
+	ctrl_ctx->add_flags |= added_ctxs;
+	new_add_flags = ctrl_ctx->add_flags;
 
 	/* If xhci_endpoint_disable() was called for this endpoint, but the
 	 * xHC hasn't been notified yet through the check_bandwidth() call,
@@ -842,14 +880,18 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 	 * descriptors.  We must drop and re-add this endpoint, so we leave the
 	 * drop flags alone.
 	 */
-	new_drop_flags = in_ctx->drop_flags;
+	new_drop_flags = ctrl_ctx->drop_flags;
 
+	slot_ctx = xhci_get_slot_ctx(xhci, in_ctx);
 	/* Update the last valid endpoint context, if we just added one past */
-	if ((in_ctx->slot.dev_info & LAST_CTX_MASK) < LAST_CTX(last_ctx)) {
-		in_ctx->slot.dev_info &= ~LAST_CTX_MASK;
-		in_ctx->slot.dev_info |= LAST_CTX(last_ctx);
+	if ((slot_ctx->dev_info & LAST_CTX_MASK) < LAST_CTX(last_ctx)) {
+		slot_ctx->dev_info &= ~LAST_CTX_MASK;
+		slot_ctx->dev_info |= LAST_CTX(last_ctx);
 	}
-	new_slot_info = in_ctx->slot.dev_info;
+	new_slot_info = slot_ctx->dev_info;
+
+	/* Store the usb_device pointer for later use */
+	ep->hcpriv = udev;
 
 	xhci_dbg(xhci, "add ep 0x%x, slot id %d, new drop flags = %#x, new add flags = %#x, new slot info = %#x\n",
 			(unsigned int) ep->desc.bEndpointAddress,
@@ -860,9 +902,11 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
 	return 0;
 }
 
-static void xhci_zero_in_ctx(struct xhci_virt_device *virt_dev)
+static void xhci_zero_in_ctx(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev)
 {
+	struct xhci_input_control_ctx *ctrl_ctx;
 	struct xhci_ep_ctx *ep_ctx;
+	struct xhci_slot_ctx *slot_ctx;
 	int i;
 
 	/* When a device's add flag and drop flag are zero, any subsequent
@@ -870,17 +914,18 @@ static void xhci_zero_in_ctx(struct xhci_virt_device *virt_dev)
 	 * untouched.  Make sure we don't leave any old state in the input
 	 * endpoint contexts.
 	 */
-	virt_dev->in_ctx->drop_flags = 0;
-	virt_dev->in_ctx->add_flags = 0;
-	virt_dev->in_ctx->slot.dev_info &= ~LAST_CTX_MASK;
+	ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx);
+	ctrl_ctx->drop_flags = 0;
+	ctrl_ctx->add_flags = 0;
+	slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
+	slot_ctx->dev_info &= ~LAST_CTX_MASK;
 	/* Endpoint 0 is always valid */
-	virt_dev->in_ctx->slot.dev_info |= LAST_CTX(1);
+	slot_ctx->dev_info |= LAST_CTX(1);
 	for (i = 1; i < 31; ++i) {
-		ep_ctx = &virt_dev->in_ctx->ep[i];
+		ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, i);
 		ep_ctx->ep_info = 0;
 		ep_ctx->ep_info2 = 0;
-		ep_ctx->deq[0] = 0;
-		ep_ctx->deq[1] = 0;
+		ep_ctx->deq = 0;
 		ep_ctx->tx_info = 0;
 	}
 }
@@ -903,6 +948,8 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
 	unsigned long flags;
 	struct xhci_hcd *xhci;
 	struct xhci_virt_device	*virt_dev;
+	struct xhci_input_control_ctx *ctrl_ctx;
+	struct xhci_slot_ctx *slot_ctx;
 
 	ret = xhci_check_args(hcd, udev, NULL, 0, __func__);
 	if (ret <= 0)
@@ -918,16 +965,18 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
 	virt_dev = xhci->devs[udev->slot_id];
 
 	/* See section 4.6.6 - A0 = 1; A1 = D0 = D1 = 0 */
-	virt_dev->in_ctx->add_flags |= SLOT_FLAG;
-	virt_dev->in_ctx->add_flags &= ~EP0_FLAG;
-	virt_dev->in_ctx->drop_flags &= ~SLOT_FLAG;
-	virt_dev->in_ctx->drop_flags &= ~EP0_FLAG;
+	ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx);
+	ctrl_ctx->add_flags |= SLOT_FLAG;
+	ctrl_ctx->add_flags &= ~EP0_FLAG;
+	ctrl_ctx->drop_flags &= ~SLOT_FLAG;
+	ctrl_ctx->drop_flags &= ~EP0_FLAG;
 	xhci_dbg(xhci, "New Input Control Context:\n");
-	xhci_dbg_ctx(xhci, virt_dev->in_ctx, virt_dev->in_ctx_dma,
-			LAST_CTX_TO_EP_NUM(virt_dev->in_ctx->slot.dev_info));
+	slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->in_ctx);
+	xhci_dbg_ctx(xhci, virt_dev->in_ctx,
+			LAST_CTX_TO_EP_NUM(slot_ctx->dev_info));
 
 	spin_lock_irqsave(&xhci->lock, flags);
-	ret = xhci_queue_configure_endpoint(xhci, virt_dev->in_ctx_dma,
+	ret = xhci_queue_configure_endpoint(xhci, virt_dev->in_ctx->dma,
 			udev->slot_id);
 	if (ret < 0) {
 		spin_unlock_irqrestore(&xhci->lock, flags);
@@ -982,10 +1031,10 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
 	}
 
 	xhci_dbg(xhci, "Output context after successful config ep cmd:\n");
-	xhci_dbg_ctx(xhci, virt_dev->out_ctx, virt_dev->out_ctx_dma,
-			LAST_CTX_TO_EP_NUM(virt_dev->in_ctx->slot.dev_info));
+	xhci_dbg_ctx(xhci, virt_dev->out_ctx,
+			LAST_CTX_TO_EP_NUM(slot_ctx->dev_info));
 
-	xhci_zero_in_ctx(virt_dev);
+	xhci_zero_in_ctx(xhci, virt_dev);
 	/* Free any old rings */
 	for (i = 1; i < 31; ++i) {
 		if (virt_dev->new_ep_rings[i]) {
@@ -1023,7 +1072,67 @@ void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
 			virt_dev->new_ep_rings[i] = NULL;
 		}
 	}
-	xhci_zero_in_ctx(virt_dev);
+	xhci_zero_in_ctx(xhci, virt_dev);
+}
+
+/* Deal with stalled endpoints.  The core should have sent the control message
+ * to clear the halt condition.  However, we need to make the xHCI hardware
+ * reset its sequence number, since a device will expect a sequence number of
+ * zero after the halt condition is cleared.
+ * Context: in_interrupt
+ */
+void xhci_endpoint_reset(struct usb_hcd *hcd,
+		struct usb_host_endpoint *ep)
+{
+	struct xhci_hcd *xhci;
+	struct usb_device *udev;
+	unsigned int ep_index;
+	unsigned long flags;
+	int ret;
+	struct xhci_dequeue_state deq_state;
+	struct xhci_ring *ep_ring;
+
+	xhci = hcd_to_xhci(hcd);
+	udev = (struct usb_device *) ep->hcpriv;
+	/* Called with a root hub endpoint (or an endpoint that wasn't added
+	 * with xhci_add_endpoint()
+	 */
+	if (!ep->hcpriv)
+		return;
+	ep_index = xhci_get_endpoint_index(&ep->desc);
+	ep_ring = xhci->devs[udev->slot_id]->ep_rings[ep_index];
+	if (!ep_ring->stopped_td) {
+		xhci_dbg(xhci, "Endpoint 0x%x not halted, refusing to reset.\n",
+				ep->desc.bEndpointAddress);
+		return;
+	}
+
+	xhci_dbg(xhci, "Queueing reset endpoint command\n");
+	spin_lock_irqsave(&xhci->lock, flags);
+	ret = xhci_queue_reset_ep(xhci, udev->slot_id, ep_index);
+	/*
+	 * Can't change the ring dequeue pointer until it's transitioned to the
+	 * stopped state, which is only upon a successful reset endpoint
+	 * command.  Better hope that last command worked!
+	 */
+	if (!ret) {
+		xhci_dbg(xhci, "Cleaning up stalled endpoint ring\n");
+		/* We need to move the HW's dequeue pointer past this TD,
+		 * or it will attempt to resend it on the next doorbell ring.
+		 */
+		xhci_find_new_dequeue_state(xhci, udev->slot_id,
+				ep_index, ep_ring->stopped_td, &deq_state);
+		xhci_dbg(xhci, "Queueing new dequeue state\n");
+		xhci_queue_new_dequeue_state(xhci, ep_ring,
+				udev->slot_id,
+				ep_index, &deq_state);
+		kfree(ep_ring->stopped_td);
+		xhci_ring_cmd_db(xhci);
+	}
+	spin_unlock_irqrestore(&xhci->lock, flags);
+
+	if (ret)
+		xhci_warn(xhci, "FIXME allocate a new ring segment\n");
 }
 
 /*
@@ -1120,7 +1229,9 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev)
 	struct xhci_virt_device *virt_dev;
 	int ret = 0;
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
-	u32 temp;
+	struct xhci_slot_ctx *slot_ctx;
+	struct xhci_input_control_ctx *ctrl_ctx;
+	u64 temp_64;
 
 	if (!udev->slot_id) {
 		xhci_dbg(xhci, "Bad Slot ID %d\n", udev->slot_id);
@@ -1133,10 +1244,12 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev)
 	if (!udev->config)
 		xhci_setup_addressable_virt_dev(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);
 
 	spin_lock_irqsave(&xhci->lock, flags);
-	ret = xhci_queue_address_device(xhci, virt_dev->in_ctx_dma,
-			udev->slot_id);
+	ret = xhci_queue_address_device(xhci, virt_dev->in_ctx->dma,
+					udev->slot_id);
 	if (ret) {
 		spin_unlock_irqrestore(&xhci->lock, flags);
 		xhci_dbg(xhci, "FIXME: allocate a command ring segment\n");
@@ -1176,41 +1289,37 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev)
 	default:
 		xhci_err(xhci, "ERROR: unexpected command completion "
 				"code 0x%x.\n", virt_dev->cmd_status);
+		xhci_dbg(xhci, "Slot ID %d Output Context:\n", udev->slot_id);
+		xhci_dbg_ctx(xhci, virt_dev->out_ctx, 2);
 		ret = -EINVAL;
 		break;
 	}
 	if (ret) {
 		return ret;
 	}
-	temp = xhci_readl(xhci, &xhci->op_regs->dcbaa_ptr[0]);
-	xhci_dbg(xhci, "Op regs DCBAA ptr[0] = %#08x\n", temp);
-	temp = xhci_readl(xhci, &xhci->op_regs->dcbaa_ptr[1]);
-	xhci_dbg(xhci, "Op regs DCBAA ptr[1] = %#08x\n", temp);
-	xhci_dbg(xhci, "Slot ID %d dcbaa entry[0] @%p = %#08x\n",
-			udev->slot_id,
-			&xhci->dcbaa->dev_context_ptrs[2*udev->slot_id],
-			xhci->dcbaa->dev_context_ptrs[2*udev->slot_id]);
-	xhci_dbg(xhci, "Slot ID %d dcbaa entry[1] @%p = %#08x\n",
+	temp_64 = xhci_read_64(xhci, &xhci->op_regs->dcbaa_ptr);
+	xhci_dbg(xhci, "Op regs DCBAA ptr = %#016llx\n", temp_64);
+	xhci_dbg(xhci, "Slot ID %d dcbaa entry @%p = %#016llx\n",
 			udev->slot_id,
-			&xhci->dcbaa->dev_context_ptrs[2*udev->slot_id+1],
-			xhci->dcbaa->dev_context_ptrs[2*udev->slot_id+1]);
+			&xhci->dcbaa->dev_context_ptrs[udev->slot_id],
+			(unsigned long long)
+				xhci->dcbaa->dev_context_ptrs[udev->slot_id]);
 	xhci_dbg(xhci, "Output Context DMA address = %#08llx\n",
-			(unsigned long long)virt_dev->out_ctx_dma);
+			(unsigned long long)virt_dev->out_ctx->dma);
 	xhci_dbg(xhci, "Slot ID %d Input Context:\n", udev->slot_id);
-	xhci_dbg_ctx(xhci, virt_dev->in_ctx, virt_dev->in_ctx_dma, 2);
+	xhci_dbg_ctx(xhci, virt_dev->in_ctx, 2);
 	xhci_dbg(xhci, "Slot ID %d Output Context:\n", udev->slot_id);
-	xhci_dbg_ctx(xhci, virt_dev->out_ctx, virt_dev->out_ctx_dma, 2);
+	xhci_dbg_ctx(xhci, virt_dev->out_ctx, 2);
 	/*
 	 * USB core uses address 1 for the roothubs, so we add one to the
 	 * address given back to us by the HC.
 	 */
-	udev->devnum = (virt_dev->out_ctx->slot.dev_state & DEV_ADDR_MASK) + 1;
+	slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx);
+	udev->devnum = (slot_ctx->dev_state & DEV_ADDR_MASK) + 1;
 	/* Zero the input context control for later use */
-	virt_dev->in_ctx->add_flags = 0;
-	virt_dev->in_ctx->drop_flags = 0;
-	/* Mirror flags in the output context for future ep enable/disable */
-	virt_dev->out_ctx->add_flags = SLOT_FLAG | EP0_FLAG;
-	virt_dev->out_ctx->drop_flags = 0;
+	ctrl_ctx = xhci_get_input_control_ctx(xhci, virt_dev->in_ctx);
+	ctrl_ctx->add_flags = 0;
+	ctrl_ctx->drop_flags = 0;
 
 	xhci_dbg(xhci, "Device address = %d\n", udev->devnum);
 	/* XXX Meh, not sure if anyone else but choose_address uses this. */
@@ -1252,7 +1361,6 @@ static int __init xhci_hcd_init(void)
 	/* xhci_device_control has eight fields, and also
 	 * embeds one xhci_slot_ctx and 31 xhci_ep_ctx
 	 */
-	BUILD_BUG_ON(sizeof(struct xhci_device_control) != (8+8+8*31)*32/8);
 	BUILD_BUG_ON(sizeof(struct xhci_stream_ctx) != 4*32/8);
 	BUILD_BUG_ON(sizeof(union xhci_trb) != 4*32/8);
 	BUILD_BUG_ON(sizeof(struct xhci_erst_entry) != 4*32/8);
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index c8a72de1c508..e6b9a1c6002d 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -88,7 +88,7 @@ static void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev,
 		return;
 	prev->next = next;
 	if (link_trbs) {
-		prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr[0] = next->dma;
+		prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr = next->dma;
 
 		/* Set the last TRB in the segment to have a TRB type ID of Link TRB */
 		val = prev->trbs[TRBS_PER_SEGMENT-1].link.control;
@@ -189,6 +189,63 @@ fail:
 	return 0;
 }
 
+#define CTX_SIZE(_hcc) (HCC_64BYTE_CONTEXT(_hcc) ? 64 : 32)
+
+struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci,
+						    int type, gfp_t flags)
+{
+	struct xhci_container_ctx *ctx = kzalloc(sizeof(*ctx), flags);
+	if (!ctx)
+		return NULL;
+
+	BUG_ON((type != XHCI_CTX_TYPE_DEVICE) && (type != XHCI_CTX_TYPE_INPUT));
+	ctx->type = type;
+	ctx->size = HCC_64BYTE_CONTEXT(xhci->hcc_params) ? 2048 : 1024;
+	if (type == XHCI_CTX_TYPE_INPUT)
+		ctx->size += CTX_SIZE(xhci->hcc_params);
+
+	ctx->bytes = dma_pool_alloc(xhci->device_pool, flags, &ctx->dma);
+	memset(ctx->bytes, 0, ctx->size);
+	return ctx;
+}
+
+void xhci_free_container_ctx(struct xhci_hcd *xhci,
+			     struct xhci_container_ctx *ctx)
+{
+	dma_pool_free(xhci->device_pool, ctx->bytes, ctx->dma);
+	kfree(ctx);
+}
+
+struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci,
+					      struct xhci_container_ctx *ctx)
+{
+	BUG_ON(ctx->type != XHCI_CTX_TYPE_INPUT);
+	return (struct xhci_input_control_ctx *)ctx->bytes;
+}
+
+struct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci,
+					struct xhci_container_ctx *ctx)
+{
+	if (ctx->type == XHCI_CTX_TYPE_DEVICE)
+		return (struct xhci_slot_ctx *)ctx->bytes;
+
+	return (struct xhci_slot_ctx *)
+		(ctx->bytes + CTX_SIZE(xhci->hcc_params));
+}
+
+struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci,
+				    struct xhci_container_ctx *ctx,
+				    unsigned int ep_index)
+{
+	/* increment ep index by offset of start of ep ctx array */
+	ep_index++;
+	if (ctx->type == XHCI_CTX_TYPE_INPUT)
+		ep_index++;
+
+	return (struct xhci_ep_ctx *)
+		(ctx->bytes + (ep_index * CTX_SIZE(xhci->hcc_params)));
+}
+
 /* All the xhci_tds in the ring's TD list should be freed at this point */
 void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id)
 {
@@ -200,8 +257,7 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id)
 		return;
 
 	dev = xhci->devs[slot_id];
-	xhci->dcbaa->dev_context_ptrs[2*slot_id] = 0;
-	xhci->dcbaa->dev_context_ptrs[2*slot_id + 1] = 0;
+	xhci->dcbaa->dev_context_ptrs[slot_id] = 0;
 	if (!dev)
 		return;
 
@@ -210,11 +266,10 @@ void xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id)
 			xhci_ring_free(xhci, dev->ep_rings[i]);
 
 	if (dev->in_ctx)
-		dma_pool_free(xhci->device_pool,
-				dev->in_ctx, dev->in_ctx_dma);
+		xhci_free_container_ctx(xhci, dev->in_ctx);
 	if (dev->out_ctx)
-		dma_pool_free(xhci->device_pool,
-				dev->out_ctx, dev->out_ctx_dma);
+		xhci_free_container_ctx(xhci, dev->out_ctx);
+
 	kfree(xhci->devs[slot_id]);
 	xhci->devs[slot_id] = 0;
 }
@@ -222,7 +277,6 @@ 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)
 {
-	dma_addr_t	dma;
 	struct xhci_virt_device *dev;
 
 	/* Slot ID 0 is reserved */
@@ -236,23 +290,21 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
 		return 0;
 	dev = xhci->devs[slot_id];
 
-	/* Allocate the (output) device context that will be used in the HC */
-	dev->out_ctx = dma_pool_alloc(xhci->device_pool, flags, &dma);
+	/* Allocate the (output) device context that will be used in the HC. */
+	dev->out_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_DEVICE, flags);
 	if (!dev->out_ctx)
 		goto fail;
-	dev->out_ctx_dma = dma;
+
 	xhci_dbg(xhci, "Slot %d output ctx = 0x%llx (dma)\n", slot_id,
-			(unsigned long long)dma);
-	memset(dev->out_ctx, 0, sizeof(*dev->out_ctx));
+			(unsigned long long)dev->out_ctx->dma);
 
 	/* Allocate the (input) device context for address device command */
-	dev->in_ctx = dma_pool_alloc(xhci->device_pool, flags, &dma);
+	dev->in_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, flags);
 	if (!dev->in_ctx)
 		goto fail;
-	dev->in_ctx_dma = dma;
+
 	xhci_dbg(xhci, "Slot %d input ctx = 0x%llx (dma)\n", slot_id,
-			(unsigned long long)dma);
-	memset(dev->in_ctx, 0, sizeof(*dev->in_ctx));
+			(unsigned long long)dev->in_ctx->dma);
 
 	/* Allocate endpoint 0 ring */
 	dev->ep_rings[0] = xhci_ring_alloc(xhci, 1, true, flags);
@@ -261,17 +313,12 @@ int xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id,
 
 	init_completion(&dev->cmd_completion);
 
-	/*
-	 * Point to output device context in dcbaa; skip the output control
-	 * context, which is eight 32 bit fields (or 32 bytes long)
-	 */
-	xhci->dcbaa->dev_context_ptrs[2*slot_id] =
-		(u32) dev->out_ctx_dma + (32);
+	/* Point to output device context in dcbaa. */
+	xhci->dcbaa->dev_context_ptrs[slot_id] = dev->out_ctx->dma;
 	xhci_dbg(xhci, "Set slot id %d dcbaa entry %p to 0x%llx\n",
 			slot_id,
-			&xhci->dcbaa->dev_context_ptrs[2*slot_id],
-			(unsigned long long)dev->out_ctx_dma);
-	xhci->dcbaa->dev_context_ptrs[2*slot_id + 1] = 0;
+			&xhci->dcbaa->dev_context_ptrs[slot_id],
+			(unsigned long long) xhci->dcbaa->dev_context_ptrs[slot_id]);
 
 	return 1;
 fail:
@@ -285,6 +332,8 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 	struct xhci_virt_device *dev;
 	struct xhci_ep_ctx	*ep0_ctx;
 	struct usb_device	*top_dev;
+	struct xhci_slot_ctx    *slot_ctx;
+	struct xhci_input_control_ctx *ctrl_ctx;
 
 	dev = xhci->devs[udev->slot_id];
 	/* Slot ID 0 is reserved */
@@ -293,27 +342,29 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 				udev->slot_id);
 		return -EINVAL;
 	}
-	ep0_ctx = &dev->in_ctx->ep[0];
+	ep0_ctx = xhci_get_ep_ctx(xhci, dev->in_ctx, 0);
+	ctrl_ctx = xhci_get_input_control_ctx(xhci, dev->in_ctx);
+	slot_ctx = xhci_get_slot_ctx(xhci, dev->in_ctx);
 
 	/* 2) New slot context and endpoint 0 context are valid*/
-	dev->in_ctx->add_flags = SLOT_FLAG | EP0_FLAG;
+	ctrl_ctx->add_flags = SLOT_FLAG | EP0_FLAG;
 
 	/* 3) Only the control endpoint is valid - one endpoint context */
-	dev->in_ctx->slot.dev_info |= LAST_CTX(1);
+	slot_ctx->dev_info |= LAST_CTX(1);
 
 	switch (udev->speed) {
 	case USB_SPEED_SUPER:
-		dev->in_ctx->slot.dev_info |= (u32) udev->route;
-		dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_SS;
+		slot_ctx->dev_info |= (u32) udev->route;
+		slot_ctx->dev_info |= (u32) SLOT_SPEED_SS;
 		break;
 	case USB_SPEED_HIGH:
-		dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_HS;
+		slot_ctx->dev_info |= (u32) SLOT_SPEED_HS;
 		break;
 	case USB_SPEED_FULL:
-		dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_FS;
+		slot_ctx->dev_info |= (u32) SLOT_SPEED_FS;
 		break;
 	case USB_SPEED_LOW:
-		dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_LS;
+		slot_ctx->dev_info |= (u32) SLOT_SPEED_LS;
 		break;
 	case USB_SPEED_VARIABLE:
 		xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
@@ -327,7 +378,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 	for (top_dev = udev; top_dev->parent && top_dev->parent->parent;
 			top_dev = top_dev->parent)
 		/* Found device below root hub */;
-	dev->in_ctx->slot.dev_info2 |= (u32) ROOT_HUB_PORT(top_dev->portnum);
+	slot_ctx->dev_info2 |= (u32) ROOT_HUB_PORT(top_dev->portnum);
 	xhci_dbg(xhci, "Set root hub portnum to %d\n", top_dev->portnum);
 
 	/* Is this a LS/FS device under a HS hub? */
@@ -337,8 +388,8 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 	 */
 	if ((udev->speed == USB_SPEED_LOW || udev->speed == USB_SPEED_FULL) &&
 			udev->tt) {
-		dev->in_ctx->slot.tt_info = udev->tt->hub->slot_id;
-		dev->in_ctx->slot.tt_info |= udev->ttport << 8;
+		slot_ctx->tt_info = udev->tt->hub->slot_id;
+		slot_ctx->tt_info |= udev->ttport << 8;
 	}
 	xhci_dbg(xhci, "udev->tt = %p\n", udev->tt);
 	xhci_dbg(xhci, "udev->ttport = 0x%x\n", udev->ttport);
@@ -360,10 +411,9 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
 	ep0_ctx->ep_info2 |= MAX_BURST(0);
 	ep0_ctx->ep_info2 |= ERROR_COUNT(3);
 
-	ep0_ctx->deq[0] =
+	ep0_ctx->deq =
 		dev->ep_rings[0]->first_seg->dma;
-	ep0_ctx->deq[0] |= dev->ep_rings[0]->cycle_state;
-	ep0_ctx->deq[1] = 0;
+	ep0_ctx->deq |= dev->ep_rings[0]->cycle_state;
 
 	/* Steps 7 and 8 were done in xhci_alloc_virt_device() */
 
@@ -470,25 +520,26 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
 	unsigned int max_burst;
 
 	ep_index = xhci_get_endpoint_index(&ep->desc);
-	ep_ctx = &virt_dev->in_ctx->ep[ep_index];
+	ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
 
 	/* Set up the endpoint ring */
 	virt_dev->new_ep_rings[ep_index] = xhci_ring_alloc(xhci, 1, true, mem_flags);
 	if (!virt_dev->new_ep_rings[ep_index])
 		return -ENOMEM;
 	ep_ring = virt_dev->new_ep_rings[ep_index];
-	ep_ctx->deq[0] = ep_ring->first_seg->dma | ep_ring->cycle_state;
-	ep_ctx->deq[1] = 0;
+	ep_ctx->deq = ep_ring->first_seg->dma | ep_ring->cycle_state;
 
 	ep_ctx->ep_info = xhci_get_endpoint_interval(udev, ep);
 
 	/* FIXME dig Mult and streams info out of ep companion desc */
 
-	/* Allow 3 retries for everything but isoc */
+	/* Allow 3 retries for everything but isoc;
+	 * error count = 0 means infinite retries.
+	 */
 	if (!usb_endpoint_xfer_isoc(&ep->desc))
 		ep_ctx->ep_info2 = ERROR_COUNT(3);
 	else
-		ep_ctx->ep_info2 = ERROR_COUNT(0);
+		ep_ctx->ep_info2 = ERROR_COUNT(1);
 
 	ep_ctx->ep_info2 |= xhci_get_endpoint_type(udev, ep);
 
@@ -498,7 +549,12 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
 		max_packet = ep->desc.wMaxPacketSize;
 		ep_ctx->ep_info2 |= MAX_PACKET(max_packet);
 		/* dig out max burst from ep companion desc */
-		max_packet = ep->ss_ep_comp->desc.bMaxBurst;
+		if (!ep->ss_ep_comp) {
+			xhci_warn(xhci, "WARN no SS endpoint companion descriptor.\n");
+			max_packet = 0;
+		} else {
+			max_packet = ep->ss_ep_comp->desc.bMaxBurst;
+		}
 		ep_ctx->ep_info2 |= MAX_BURST(max_packet);
 		break;
 	case USB_SPEED_HIGH:
@@ -531,18 +587,114 @@ void xhci_endpoint_zero(struct xhci_hcd *xhci,
 	struct xhci_ep_ctx *ep_ctx;
 
 	ep_index = xhci_get_endpoint_index(&ep->desc);
-	ep_ctx = &virt_dev->in_ctx->ep[ep_index];
+	ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index);
 
 	ep_ctx->ep_info = 0;
 	ep_ctx->ep_info2 = 0;
-	ep_ctx->deq[0] = 0;
-	ep_ctx->deq[1] = 0;
+	ep_ctx->deq = 0;
 	ep_ctx->tx_info = 0;
 	/* Don't free the endpoint ring until the set interface or configuration
 	 * request succeeds.
 	 */
 }
 
+/* Set up the scratchpad buffer array and scratchpad buffers, if needed. */
+static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags)
+{
+	int i;
+	struct device *dev = xhci_to_hcd(xhci)->self.controller;
+	int num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2);
+
+	xhci_dbg(xhci, "Allocating %d scratchpad buffers\n", num_sp);
+
+	if (!num_sp)
+		return 0;
+
+	xhci->scratchpad = kzalloc(sizeof(*xhci->scratchpad), flags);
+	if (!xhci->scratchpad)
+		goto fail_sp;
+
+	xhci->scratchpad->sp_array =
+		pci_alloc_consistent(to_pci_dev(dev),
+				     num_sp * sizeof(u64),
+				     &xhci->scratchpad->sp_dma);
+	if (!xhci->scratchpad->sp_array)
+		goto fail_sp2;
+
+	xhci->scratchpad->sp_buffers = kzalloc(sizeof(void *) * num_sp, flags);
+	if (!xhci->scratchpad->sp_buffers)
+		goto fail_sp3;
+
+	xhci->scratchpad->sp_dma_buffers =
+		kzalloc(sizeof(dma_addr_t) * num_sp, flags);
+
+	if (!xhci->scratchpad->sp_dma_buffers)
+		goto fail_sp4;
+
+	xhci->dcbaa->dev_context_ptrs[0] = xhci->scratchpad->sp_dma;
+	for (i = 0; i < num_sp; i++) {
+		dma_addr_t dma;
+		void *buf = pci_alloc_consistent(to_pci_dev(dev),
+						 xhci->page_size, &dma);
+		if (!buf)
+			goto fail_sp5;
+
+		xhci->scratchpad->sp_array[i] = dma;
+		xhci->scratchpad->sp_buffers[i] = buf;
+		xhci->scratchpad->sp_dma_buffers[i] = dma;
+	}
+
+	return 0;
+
+ fail_sp5:
+	for (i = i - 1; i >= 0; i--) {
+		pci_free_consistent(to_pci_dev(dev), xhci->page_size,
+				    xhci->scratchpad->sp_buffers[i],
+				    xhci->scratchpad->sp_dma_buffers[i]);
+	}
+	kfree(xhci->scratchpad->sp_dma_buffers);
+
+ fail_sp4:
+	kfree(xhci->scratchpad->sp_buffers);
+
+ fail_sp3:
+	pci_free_consistent(to_pci_dev(dev), num_sp * sizeof(u64),
+			    xhci->scratchpad->sp_array,
+			    xhci->scratchpad->sp_dma);
+
+ fail_sp2:
+	kfree(xhci->scratchpad);
+	xhci->scratchpad = NULL;
+
+ fail_sp:
+	return -ENOMEM;
+}
+
+static void scratchpad_free(struct xhci_hcd *xhci)
+{
+	int num_sp;
+	int i;
+	struct pci_dev	*pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
+
+	if (!xhci->scratchpad)
+		return;
+
+	num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2);
+
+	for (i = 0; i < num_sp; i++) {
+		pci_free_consistent(pdev, xhci->page_size,
+				    xhci->scratchpad->sp_buffers[i],
+				    xhci->scratchpad->sp_dma_buffers[i]);
+	}
+	kfree(xhci->scratchpad->sp_dma_buffers);
+	kfree(xhci->scratchpad->sp_buffers);
+	pci_free_consistent(pdev, num_sp * sizeof(u64),
+			    xhci->scratchpad->sp_array,
+			    xhci->scratchpad->sp_dma);
+	kfree(xhci->scratchpad);
+	xhci->scratchpad = NULL;
+}
+
 void xhci_mem_cleanup(struct xhci_hcd *xhci)
 {
 	struct pci_dev	*pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller);
@@ -551,10 +703,8 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
 
 	/* Free the Event Ring Segment Table and the actual Event Ring */
 	xhci_writel(xhci, 0, &xhci->ir_set->erst_size);
-	xhci_writel(xhci, 0, &xhci->ir_set->erst_base[0]);
-	xhci_writel(xhci, 0, &xhci->ir_set->erst_base[1]);
-	xhci_writel(xhci, 0, &xhci->ir_set->erst_dequeue[0]);
-	xhci_writel(xhci, 0, &xhci->ir_set->erst_dequeue[1]);
+	xhci_write_64(xhci, 0, &xhci->ir_set->erst_base);
+	xhci_write_64(xhci, 0, &xhci->ir_set->erst_dequeue);
 	size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries);
 	if (xhci->erst.entries)
 		pci_free_consistent(pdev, size,
@@ -566,8 +716,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
 	xhci->event_ring = NULL;
 	xhci_dbg(xhci, "Freed event ring\n");
 
-	xhci_writel(xhci, 0, &xhci->op_regs->cmd_ring[0]);
-	xhci_writel(xhci, 0, &xhci->op_regs->cmd_ring[1]);
+	xhci_write_64(xhci, 0, &xhci->op_regs->cmd_ring);
 	if (xhci->cmd_ring)
 		xhci_ring_free(xhci, xhci->cmd_ring);
 	xhci->cmd_ring = NULL;
@@ -586,8 +735,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
 	xhci->device_pool = NULL;
 	xhci_dbg(xhci, "Freed device context pool\n");
 
-	xhci_writel(xhci, 0, &xhci->op_regs->dcbaa_ptr[0]);
-	xhci_writel(xhci, 0, &xhci->op_regs->dcbaa_ptr[1]);
+	xhci_write_64(xhci, 0, &xhci->op_regs->dcbaa_ptr);
 	if (xhci->dcbaa)
 		pci_free_consistent(pdev, sizeof(*xhci->dcbaa),
 				xhci->dcbaa, xhci->dcbaa->dma);
@@ -595,6 +743,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
 
 	xhci->page_size = 0;
 	xhci->page_shift = 0;
+	scratchpad_free(xhci);
 }
 
 int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
@@ -602,6 +751,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	dma_addr_t	dma;
 	struct device	*dev = xhci_to_hcd(xhci)->self.controller;
 	unsigned int	val, val2;
+	u64		val_64;
 	struct xhci_segment	*seg;
 	u32 page_size;
 	int i;
@@ -647,8 +797,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	xhci->dcbaa->dma = dma;
 	xhci_dbg(xhci, "// Device context base array address = 0x%llx (DMA), %p (virt)\n",
 			(unsigned long long)xhci->dcbaa->dma, xhci->dcbaa);
-	xhci_writel(xhci, dma, &xhci->op_regs->dcbaa_ptr[0]);
-	xhci_writel(xhci, (u32) 0, &xhci->op_regs->dcbaa_ptr[1]);
+	xhci_write_64(xhci, dma, &xhci->op_regs->dcbaa_ptr);
 
 	/*
 	 * Initialize the ring segment pool.  The ring must be a contiguous
@@ -658,11 +807,10 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	 */
 	xhci->segment_pool = dma_pool_create("xHCI ring segments", dev,
 			SEGMENT_SIZE, 64, xhci->page_size);
+
 	/* See Table 46 and Note on Figure 55 */
-	/* FIXME support 64-byte contexts */
 	xhci->device_pool = dma_pool_create("xHCI input/output contexts", dev,
-			sizeof(struct xhci_device_control),
-			64, xhci->page_size);
+			2112, 64, xhci->page_size);
 	if (!xhci->segment_pool || !xhci->device_pool)
 		goto fail;
 
@@ -675,14 +823,12 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 			(unsigned long long)xhci->cmd_ring->first_seg->dma);
 
 	/* Set the address in the Command Ring Control register */
-	val = xhci_readl(xhci, &xhci->op_regs->cmd_ring[0]);
-	val = (val & ~CMD_RING_ADDR_MASK) |
-		(xhci->cmd_ring->first_seg->dma & CMD_RING_ADDR_MASK) |
+	val_64 = xhci_read_64(xhci, &xhci->op_regs->cmd_ring);
+	val_64 = (val_64 & (u64) CMD_RING_RSVD_BITS) |
+		(xhci->cmd_ring->first_seg->dma & (u64) ~CMD_RING_RSVD_BITS) |
 		xhci->cmd_ring->cycle_state;
-	xhci_dbg(xhci, "// Setting command ring address low bits to 0x%x\n", val);
-	xhci_writel(xhci, val, &xhci->op_regs->cmd_ring[0]);
-	xhci_dbg(xhci, "// Setting command ring address high bits to 0x0\n");
-	xhci_writel(xhci, (u32) 0, &xhci->op_regs->cmd_ring[1]);
+	xhci_dbg(xhci, "// Setting command ring address to 0x%x\n", val);
+	xhci_write_64(xhci, val_64, &xhci->op_regs->cmd_ring);
 	xhci_dbg_cmd_ptrs(xhci);
 
 	val = xhci_readl(xhci, &xhci->cap_regs->db_off);
@@ -722,8 +868,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	/* set ring base address and size for each segment table entry */
 	for (val = 0, seg = xhci->event_ring->first_seg; val < ERST_NUM_SEGS; val++) {
 		struct xhci_erst_entry *entry = &xhci->erst.entries[val];
-		entry->seg_addr[0] = seg->dma;
-		entry->seg_addr[1] = 0;
+		entry->seg_addr = seg->dma;
 		entry->seg_size = TRBS_PER_SEGMENT;
 		entry->rsvd = 0;
 		seg = seg->next;
@@ -741,11 +886,10 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	/* set the segment table base address */
 	xhci_dbg(xhci, "// Set ERST base address for ir_set 0 = 0x%llx\n",
 			(unsigned long long)xhci->erst.erst_dma_addr);
-	val = xhci_readl(xhci, &xhci->ir_set->erst_base[0]);
-	val &= ERST_PTR_MASK;
-	val |= (xhci->erst.erst_dma_addr & ~ERST_PTR_MASK);
-	xhci_writel(xhci, val, &xhci->ir_set->erst_base[0]);
-	xhci_writel(xhci, 0, &xhci->ir_set->erst_base[1]);
+	val_64 = xhci_read_64(xhci, &xhci->ir_set->erst_base);
+	val_64 &= ERST_PTR_MASK;
+	val_64 |= (xhci->erst.erst_dma_addr & (u64) ~ERST_PTR_MASK);
+	xhci_write_64(xhci, val_64, &xhci->ir_set->erst_base);
 
 	/* Set the event ring dequeue address */
 	xhci_set_hc_event_deq(xhci);
@@ -761,7 +905,11 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 	for (i = 0; i < MAX_HC_SLOTS; ++i)
 		xhci->devs[i] = 0;
 
+	if (scratchpad_alloc(xhci, flags))
+		goto fail;
+
 	return 0;
+
 fail:
 	xhci_warn(xhci, "Couldn't initialize memory\n");
 	xhci_mem_cleanup(xhci);
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 1462709e26c0..592fe7e623f7 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -117,6 +117,7 @@ static const struct hc_driver xhci_pci_hc_driver = {
 	.free_dev =		xhci_free_dev,
 	.add_endpoint =		xhci_add_endpoint,
 	.drop_endpoint =	xhci_drop_endpoint,
+	.endpoint_reset =	xhci_endpoint_reset,
 	.check_bandwidth =	xhci_check_bandwidth,
 	.reset_bandwidth =	xhci_reset_bandwidth,
 	.address_device =	xhci_address_device,
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 02d81985c454..aa88a067148b 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -135,6 +135,7 @@ static void next_trb(struct xhci_hcd *xhci,
 static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer)
 {
 	union xhci_trb *next = ++(ring->dequeue);
+	unsigned long long addr;
 
 	ring->deq_updates++;
 	/* Update the dequeue pointer further if that was a link TRB or we're at
@@ -152,6 +153,13 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer
 		ring->dequeue = ring->deq_seg->trbs;
 		next = ring->dequeue;
 	}
+	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg, ring->dequeue);
+	if (ring == xhci->event_ring)
+		xhci_dbg(xhci, "Event ring deq = 0x%llx (DMA)\n", addr);
+	else if (ring == xhci->cmd_ring)
+		xhci_dbg(xhci, "Command ring deq = 0x%llx (DMA)\n", addr);
+	else
+		xhci_dbg(xhci, "Ring deq = 0x%llx (DMA)\n", addr);
 }
 
 /*
@@ -171,6 +179,7 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer
 {
 	u32 chain;
 	union xhci_trb *next;
+	unsigned long long addr;
 
 	chain = ring->enqueue->generic.field[3] & TRB_CHAIN;
 	next = ++(ring->enqueue);
@@ -204,6 +213,13 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, bool consumer
 		ring->enqueue = ring->enq_seg->trbs;
 		next = ring->enqueue;
 	}
+	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->enq_seg, ring->enqueue);
+	if (ring == xhci->event_ring)
+		xhci_dbg(xhci, "Event ring enq = 0x%llx (DMA)\n", addr);
+	else if (ring == xhci->cmd_ring)
+		xhci_dbg(xhci, "Command ring enq = 0x%llx (DMA)\n", addr);
+	else
+		xhci_dbg(xhci, "Ring enq = 0x%llx (DMA)\n", addr);
 }
 
 /*
@@ -237,7 +253,7 @@ static int room_on_ring(struct xhci_hcd *xhci, struct xhci_ring *ring,
 
 void xhci_set_hc_event_deq(struct xhci_hcd *xhci)
 {
-	u32 temp;
+	u64 temp;
 	dma_addr_t deq;
 
 	deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg,
@@ -246,13 +262,15 @@ void xhci_set_hc_event_deq(struct xhci_hcd *xhci)
 		xhci_warn(xhci, "WARN something wrong with SW event ring "
 				"dequeue ptr.\n");
 	/* Update HC event ring dequeue pointer */
-	temp = xhci_readl(xhci, &xhci->ir_set->erst_dequeue[0]);
+	temp = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue);
 	temp &= ERST_PTR_MASK;
-	if (!in_interrupt())
-		xhci_dbg(xhci, "// Write event ring dequeue pointer\n");
-	xhci_writel(xhci, 0, &xhci->ir_set->erst_dequeue[1]);
-	xhci_writel(xhci, (deq & ~ERST_PTR_MASK) | temp,
-			&xhci->ir_set->erst_dequeue[0]);
+	/* Don't clear the EHB bit (which is RW1C) because
+	 * there might be more events to service.
+	 */
+	temp &= ~ERST_EHB;
+	xhci_dbg(xhci, "// Write event ring dequeue pointer, preserving EHB bit\n");
+	xhci_write_64(xhci, ((u64) deq & (u64) ~ERST_PTR_MASK) | temp,
+			&xhci->ir_set->erst_dequeue);
 }
 
 /* Ring the host controller doorbell after placing a command on the ring */
@@ -279,7 +297,8 @@ static void ring_ep_doorbell(struct xhci_hcd *xhci,
 	/* Don't ring the doorbell for this endpoint if there are pending
 	 * cancellations because the we don't want to interrupt processing.
 	 */
-	if (!ep_ring->cancels_pending && !(ep_ring->state & SET_DEQ_PENDING)) {
+	if (!ep_ring->cancels_pending && !(ep_ring->state & SET_DEQ_PENDING)
+			&& !(ep_ring->state & EP_HALTED)) {
 		field = xhci_readl(xhci, db_addr) & DB_MASK;
 		xhci_writel(xhci, field | EPI_TO_DB(ep_index), db_addr);
 		/* Flush PCI posted writes - FIXME Matthew Wilcox says this
@@ -316,12 +335,6 @@ static struct xhci_segment *find_trb_seg(
 	return cur_seg;
 }
 
-struct dequeue_state {
-	struct xhci_segment *new_deq_seg;
-	union xhci_trb *new_deq_ptr;
-	int new_cycle_state;
-};
-
 /*
  * Move the xHC's endpoint ring dequeue pointer past cur_td.
  * Record the new state of the xHC's endpoint ring dequeue segment,
@@ -336,24 +349,30 @@ struct dequeue_state {
  *  - Finally we move the dequeue state one TRB further, toggling the cycle bit
  *    if we've moved it past a link TRB with the toggle cycle bit set.
  */
-static void find_new_dequeue_state(struct xhci_hcd *xhci,
+void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
 		unsigned int slot_id, unsigned int ep_index,
-		struct xhci_td *cur_td, struct dequeue_state *state)
+		struct xhci_td *cur_td, struct xhci_dequeue_state *state)
 {
 	struct xhci_virt_device *dev = xhci->devs[slot_id];
 	struct xhci_ring *ep_ring = dev->ep_rings[ep_index];
 	struct xhci_generic_trb *trb;
+	struct xhci_ep_ctx *ep_ctx;
+	dma_addr_t addr;
 
 	state->new_cycle_state = 0;
+	xhci_dbg(xhci, "Finding segment containing stopped TRB.\n");
 	state->new_deq_seg = find_trb_seg(cur_td->start_seg,
 			ep_ring->stopped_trb,
 			&state->new_cycle_state);
 	if (!state->new_deq_seg)
 		BUG();
 	/* Dig out the cycle state saved by the xHC during the stop ep cmd */
-	state->new_cycle_state = 0x1 & dev->out_ctx->ep[ep_index].deq[0];
+	xhci_dbg(xhci, "Finding endpoint context\n");
+	ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
+	state->new_cycle_state = 0x1 & ep_ctx->deq;
 
 	state->new_deq_ptr = cur_td->last_trb;
+	xhci_dbg(xhci, "Finding segment containing last TRB in TD.\n");
 	state->new_deq_seg = find_trb_seg(state->new_deq_seg,
 			state->new_deq_ptr,
 			&state->new_cycle_state);
@@ -367,6 +386,12 @@ static void find_new_dequeue_state(struct xhci_hcd *xhci,
 	next_trb(xhci, ep_ring, &state->new_deq_seg, &state->new_deq_ptr);
 
 	/* Don't update the ring cycle state for the producer (us). */
+	xhci_dbg(xhci, "New dequeue segment = %p (virtual)\n",
+			state->new_deq_seg);
+	addr = xhci_trb_virt_to_dma(state->new_deq_seg, state->new_deq_ptr);
+	xhci_dbg(xhci, "New dequeue pointer = 0x%llx (DMA)\n",
+			(unsigned long long) addr);
+	xhci_dbg(xhci, "Setting dequeue pointer in internal ring state.\n");
 	ep_ring->dequeue = state->new_deq_ptr;
 	ep_ring->deq_seg = state->new_deq_seg;
 }
@@ -416,6 +441,30 @@ static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id,
 		unsigned int ep_index, struct xhci_segment *deq_seg,
 		union xhci_trb *deq_ptr, u32 cycle_state);
 
+void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
+		struct xhci_ring *ep_ring, unsigned int slot_id,
+		unsigned int ep_index, struct xhci_dequeue_state *deq_state)
+{
+	xhci_dbg(xhci, "Set TR Deq Ptr cmd, new deq seg = %p (0x%llx dma), "
+			"new deq ptr = %p (0x%llx dma), new cycle = %u\n",
+			deq_state->new_deq_seg,
+			(unsigned long long)deq_state->new_deq_seg->dma,
+			deq_state->new_deq_ptr,
+			(unsigned long long)xhci_trb_virt_to_dma(deq_state->new_deq_seg, deq_state->new_deq_ptr),
+			deq_state->new_cycle_state);
+	queue_set_tr_deq(xhci, slot_id, ep_index,
+			deq_state->new_deq_seg,
+			deq_state->new_deq_ptr,
+			(u32) deq_state->new_cycle_state);
+	/* Stop the TD queueing code from ringing the doorbell until
+	 * this command completes.  The HC won't set the dequeue pointer
+	 * if the ring is running, and ringing the doorbell starts the
+	 * ring running.
+	 */
+	ep_ring->state |= SET_DEQ_PENDING;
+	xhci_ring_cmd_db(xhci);
+}
+
 /*
  * When we get a command completion for a Stop Endpoint Command, we need to
  * unlink any cancelled TDs from the ring.  There are two ways to do that:
@@ -436,7 +485,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
 	struct xhci_td *cur_td = 0;
 	struct xhci_td *last_unlinked_td;
 
-	struct dequeue_state deq_state;
+	struct xhci_dequeue_state deq_state;
 #ifdef CONFIG_USB_HCD_STAT
 	ktime_t stop_time = ktime_get();
 #endif
@@ -464,7 +513,7 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
 		 * move the xHC endpoint ring dequeue pointer past this TD.
 		 */
 		if (cur_td == ep_ring->stopped_td)
-			find_new_dequeue_state(xhci, slot_id, ep_index, cur_td,
+			xhci_find_new_dequeue_state(xhci, slot_id, ep_index, cur_td,
 					&deq_state);
 		else
 			td_to_noop(xhci, ep_ring, cur_td);
@@ -480,24 +529,8 @@ static void handle_stopped_endpoint(struct xhci_hcd *xhci,
 
 	/* If necessary, queue a Set Transfer Ring Dequeue Pointer command */
 	if (deq_state.new_deq_ptr && deq_state.new_deq_seg) {
-		xhci_dbg(xhci, "Set TR Deq Ptr cmd, new deq seg = %p (0x%llx dma), "
-				"new deq ptr = %p (0x%llx dma), new cycle = %u\n",
-				deq_state.new_deq_seg,
-				(unsigned long long)deq_state.new_deq_seg->dma,
-				deq_state.new_deq_ptr,
-				(unsigned long long)xhci_trb_virt_to_dma(deq_state.new_deq_seg, deq_state.new_deq_ptr),
-				deq_state.new_cycle_state);
-		queue_set_tr_deq(xhci, slot_id, ep_index,
-				deq_state.new_deq_seg,
-				deq_state.new_deq_ptr,
-				(u32) deq_state.new_cycle_state);
-		/* Stop the TD queueing code from ringing the doorbell until
-		 * this command completes.  The HC won't set the dequeue pointer
-		 * if the ring is running, and ringing the doorbell starts the
-		 * ring running.
-		 */
-		ep_ring->state |= SET_DEQ_PENDING;
-		xhci_ring_cmd_db(xhci);
+		xhci_queue_new_dequeue_state(xhci, ep_ring,
+				slot_id, ep_index, &deq_state);
 	} else {
 		/* Otherwise just ring the doorbell to restart the ring */
 		ring_ep_doorbell(xhci, slot_id, ep_index);
@@ -551,11 +584,15 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci,
 	unsigned int ep_index;
 	struct xhci_ring *ep_ring;
 	struct xhci_virt_device *dev;
+	struct xhci_ep_ctx *ep_ctx;
+	struct xhci_slot_ctx *slot_ctx;
 
 	slot_id = TRB_TO_SLOT_ID(trb->generic.field[3]);
 	ep_index = TRB_TO_EP_INDEX(trb->generic.field[3]);
 	dev = xhci->devs[slot_id];
 	ep_ring = dev->ep_rings[ep_index];
+	ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
+	slot_ctx = xhci_get_slot_ctx(xhci, dev->out_ctx);
 
 	if (GET_COMP_CODE(event->status) != COMP_SUCCESS) {
 		unsigned int ep_state;
@@ -569,9 +606,9 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci,
 		case COMP_CTX_STATE:
 			xhci_warn(xhci, "WARN Set TR Deq Ptr cmd failed due "
 					"to incorrect slot or ep state.\n");
-			ep_state = dev->out_ctx->ep[ep_index].ep_info;
+			ep_state = ep_ctx->ep_info;
 			ep_state &= EP_STATE_MASK;
-			slot_state = dev->out_ctx->slot.dev_state;
+			slot_state = slot_ctx->dev_state;
 			slot_state = GET_SLOT_STATE(slot_state);
 			xhci_dbg(xhci, "Slot state = %u, EP state = %u\n",
 					slot_state, ep_state);
@@ -593,16 +630,33 @@ static void handle_set_deq_completion(struct xhci_hcd *xhci,
 		 * cancelling URBs, which might not be an error...
 		 */
 	} else {
-		xhci_dbg(xhci, "Successful Set TR Deq Ptr cmd, deq[0] = 0x%x, "
-				"deq[1] = 0x%x.\n",
-				dev->out_ctx->ep[ep_index].deq[0],
-				dev->out_ctx->ep[ep_index].deq[1]);
+		xhci_dbg(xhci, "Successful Set TR Deq Ptr cmd, deq = @%08llx\n",
+				ep_ctx->deq);
 	}
 
 	ep_ring->state &= ~SET_DEQ_PENDING;
 	ring_ep_doorbell(xhci, slot_id, ep_index);
 }
 
+static void handle_reset_ep_completion(struct xhci_hcd *xhci,
+		struct xhci_event_cmd *event,
+		union xhci_trb *trb)
+{
+	int slot_id;
+	unsigned int ep_index;
+
+	slot_id = TRB_TO_SLOT_ID(trb->generic.field[3]);
+	ep_index = TRB_TO_EP_INDEX(trb->generic.field[3]);
+	/* This command will only fail if the endpoint wasn't halted,
+	 * but we don't care.
+	 */
+	xhci_dbg(xhci, "Ignoring reset ep completion code of %u\n",
+			(unsigned int) GET_COMP_CODE(event->status));
+
+	/* Clear our internal halted state and restart the ring */
+	xhci->devs[slot_id]->ep_rings[ep_index]->state &= ~EP_HALTED;
+	ring_ep_doorbell(xhci, slot_id, ep_index);
+}
 
 static void handle_cmd_completion(struct xhci_hcd *xhci,
 		struct xhci_event_cmd *event)
@@ -611,7 +665,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
 	u64 cmd_dma;
 	dma_addr_t cmd_dequeue_dma;
 
-	cmd_dma = (((u64) event->cmd_trb[1]) << 32) + event->cmd_trb[0];
+	cmd_dma = event->cmd_trb;
 	cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg,
 			xhci->cmd_ring->dequeue);
 	/* Is the command ring deq ptr out of sync with the deq seg ptr? */
@@ -653,6 +707,9 @@ static void handle_cmd_completion(struct xhci_hcd *xhci,
 	case TRB_TYPE(TRB_CMD_NOOP):
 		++xhci->noops_handled;
 		break;
+	case TRB_TYPE(TRB_RESET_EP):
+		handle_reset_ep_completion(xhci, event, xhci->cmd_ring->dequeue);
+		break;
 	default:
 		/* Skip over unknown commands on the event ring */
 		xhci->error_bitmask |= 1 << 6;
@@ -756,7 +813,9 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	union xhci_trb *event_trb;
 	struct urb *urb = 0;
 	int status = -EINPROGRESS;
+	struct xhci_ep_ctx *ep_ctx;
 
+	xhci_dbg(xhci, "In %s\n", __func__);
 	xdev = xhci->devs[TRB_TO_SLOT_ID(event->flags)];
 	if (!xdev) {
 		xhci_err(xhci, "ERROR Transfer event pointed to bad slot\n");
@@ -765,17 +824,17 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 
 	/* Endpoint ID is 1 based, our index is zero based */
 	ep_index = TRB_TO_EP_ID(event->flags) - 1;
+	xhci_dbg(xhci, "%s - ep index = %d\n", __func__, ep_index);
 	ep_ring = xdev->ep_rings[ep_index];
-	if (!ep_ring || (xdev->out_ctx->ep[ep_index].ep_info & EP_STATE_MASK) == EP_STATE_DISABLED) {
+	ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index);
+	if (!ep_ring || (ep_ctx->ep_info & EP_STATE_MASK) == EP_STATE_DISABLED) {
 		xhci_err(xhci, "ERROR Transfer event pointed to disabled endpoint\n");
 		return -ENODEV;
 	}
 
-	event_dma = event->buffer[0];
-	if (event->buffer[1] != 0)
-		xhci_warn(xhci, "WARN ignoring upper 32-bits of 64-bit TRB dma address\n");
-
+	event_dma = event->buffer;
 	/* This TRB should be in the TD at the head of this ring's TD list */
+	xhci_dbg(xhci, "%s - checking for list empty\n", __func__);
 	if (list_empty(&ep_ring->td_list)) {
 		xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n",
 				TRB_TO_SLOT_ID(event->flags), ep_index);
@@ -785,11 +844,14 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		urb = NULL;
 		goto cleanup;
 	}
+	xhci_dbg(xhci, "%s - getting list entry\n", __func__);
 	td = list_entry(ep_ring->td_list.next, struct xhci_td, td_list);
 
 	/* Is this a TRB in the currently executing TD? */
+	xhci_dbg(xhci, "%s - looking for TD\n", __func__);
 	event_seg = trb_in_td(ep_ring->deq_seg, ep_ring->dequeue,
 			td->last_trb, event_dma);
+	xhci_dbg(xhci, "%s - found event_seg = %p\n", __func__, event_seg);
 	if (!event_seg) {
 		/* HC is busted, give up! */
 		xhci_err(xhci, "ERROR Transfer event TRB DMA ptr not part of current TD\n");
@@ -798,10 +860,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	event_trb = &event_seg->trbs[(event_dma - event_seg->dma) / sizeof(*event_trb)];
 	xhci_dbg(xhci, "Event TRB with TRB type ID %u\n",
 			(unsigned int) (event->flags & TRB_TYPE_BITMASK)>>10);
-	xhci_dbg(xhci, "Offset 0x00 (buffer[0]) = 0x%x\n",
-			(unsigned int) event->buffer[0]);
-	xhci_dbg(xhci, "Offset 0x04 (buffer[0]) = 0x%x\n",
-			(unsigned int) event->buffer[1]);
+	xhci_dbg(xhci, "Offset 0x00 (buffer lo) = 0x%x\n",
+			lower_32_bits(event->buffer));
+	xhci_dbg(xhci, "Offset 0x04 (buffer hi) = 0x%x\n",
+			upper_32_bits(event->buffer));
 	xhci_dbg(xhci, "Offset 0x08 (transfer length) = 0x%x\n",
 			(unsigned int) event->transfer_len);
 	xhci_dbg(xhci, "Offset 0x0C (flags) = 0x%x\n",
@@ -823,6 +885,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		break;
 	case COMP_STALL:
 		xhci_warn(xhci, "WARN: Stalled endpoint\n");
+		ep_ring->state |= EP_HALTED;
 		status = -EPIPE;
 		break;
 	case COMP_TRB_ERR:
@@ -833,6 +896,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		xhci_warn(xhci, "WARN: transfer error on endpoint\n");
 		status = -EPROTO;
 		break;
+	case COMP_BABBLE:
+		xhci_warn(xhci, "WARN: babble error on endpoint\n");
+		status = -EOVERFLOW;
+		break;
 	case COMP_DB_ERR:
 		xhci_warn(xhci, "WARN: HC couldn't access mem fast enough\n");
 		status = -ENOSR;
@@ -874,15 +941,26 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		if (event_trb != ep_ring->dequeue) {
 			/* The event was for the status stage */
 			if (event_trb == td->last_trb) {
-				td->urb->actual_length =
-					td->urb->transfer_buffer_length;
+				if (td->urb->actual_length != 0) {
+					/* Don't overwrite a previously set error code */
+					if (status == -EINPROGRESS || status == 0)
+						/* Did we already see a short data stage? */
+						status = -EREMOTEIO;
+				} else {
+					td->urb->actual_length =
+						td->urb->transfer_buffer_length;
+				}
 			} else {
 			/* Maybe the event was for the data stage? */
-				if (GET_COMP_CODE(event->transfer_len) != COMP_STOP_INVAL)
+				if (GET_COMP_CODE(event->transfer_len) != COMP_STOP_INVAL) {
 					/* We didn't stop on a link TRB in the middle */
 					td->urb->actual_length =
 						td->urb->transfer_buffer_length -
 						TRB_LEN(event->transfer_len);
+					xhci_dbg(xhci, "Waiting for status stage event\n");
+					urb = NULL;
+					goto cleanup;
+				}
 			}
 		}
 	} else {
@@ -929,16 +1007,20 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 							TRB_LEN(event->transfer_len));
 					td->urb->actual_length = 0;
 				}
-				if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
-					status = -EREMOTEIO;
-				else
-					status = 0;
+				/* Don't overwrite a previously set error code */
+				if (status == -EINPROGRESS) {
+					if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
+						status = -EREMOTEIO;
+					else
+						status = 0;
+				}
 			} else {
 				td->urb->actual_length = td->urb->transfer_buffer_length;
 				/* Ignore a short packet completion if the
 				 * untransferred length was zero.
 				 */
-				status = 0;
+				if (status == -EREMOTEIO)
+					status = 0;
 			}
 		} else {
 			/* Slow path - walk the list, starting from the dequeue
@@ -965,19 +1047,30 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 					TRB_LEN(event->transfer_len);
 		}
 	}
-	/* The Endpoint Stop Command completion will take care of
-	 * any stopped TDs.  A stopped TD may be restarted, so don't update the
-	 * ring dequeue pointer or take this TD off any lists yet.
-	 */
 	if (GET_COMP_CODE(event->transfer_len) == COMP_STOP_INVAL ||
 			GET_COMP_CODE(event->transfer_len) == COMP_STOP) {
+		/* The Endpoint Stop Command completion will take care of any
+		 * stopped TDs.  A stopped TD may be restarted, so don't update
+		 * the ring dequeue pointer or take this TD off any lists yet.
+		 */
 		ep_ring->stopped_td = td;
 		ep_ring->stopped_trb = event_trb;
 	} else {
-		/* Update ring dequeue pointer */
-		while (ep_ring->dequeue != td->last_trb)
+		if (GET_COMP_CODE(event->transfer_len) == COMP_STALL) {
+			/* The transfer is completed from the driver's
+			 * perspective, but we need to issue a set dequeue
+			 * command for this stalled endpoint to move the dequeue
+			 * pointer past the TD.  We can't do that here because
+			 * the halt condition must be cleared first.
+			 */
+			ep_ring->stopped_td = td;
+			ep_ring->stopped_trb = event_trb;
+		} else {
+			/* Update ring dequeue pointer */
+			while (ep_ring->dequeue != td->last_trb)
+				inc_deq(xhci, ep_ring, false);
 			inc_deq(xhci, ep_ring, false);
-		inc_deq(xhci, ep_ring, false);
+		}
 
 		/* Clean up the endpoint's TD list */
 		urb = td->urb;
@@ -987,7 +1080,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 			list_del(&td->cancelled_td_list);
 			ep_ring->cancels_pending--;
 		}
-		kfree(td);
+		/* Leave the TD around for the reset endpoint function to use */
+		if (GET_COMP_CODE(event->transfer_len) != COMP_STALL) {
+			kfree(td);
+		}
 		urb->hcpriv = NULL;
 	}
 cleanup:
@@ -997,6 +1093,8 @@ cleanup:
 	/* FIXME for multi-TD URBs (who have buffers bigger than 64MB) */
 	if (urb) {
 		usb_hcd_unlink_urb_from_ep(xhci_to_hcd(xhci), urb);
+		xhci_dbg(xhci, "Giveback URB %p, len = %d, status = %d\n",
+				urb, td->urb->actual_length, status);
 		spin_unlock(&xhci->lock);
 		usb_hcd_giveback_urb(xhci_to_hcd(xhci), urb, status);
 		spin_lock(&xhci->lock);
@@ -1014,6 +1112,7 @@ void xhci_handle_event(struct xhci_hcd *xhci)
 	int update_ptrs = 1;
 	int ret;
 
+	xhci_dbg(xhci, "In %s\n", __func__);
 	if (!xhci->event_ring || !xhci->event_ring->dequeue) {
 		xhci->error_bitmask |= 1 << 1;
 		return;
@@ -1026,18 +1125,25 @@ void xhci_handle_event(struct xhci_hcd *xhci)
 		xhci->error_bitmask |= 1 << 2;
 		return;
 	}
+	xhci_dbg(xhci, "%s - OS owns TRB\n", __func__);
 
 	/* FIXME: Handle more event types. */
 	switch ((event->event_cmd.flags & TRB_TYPE_BITMASK)) {
 	case TRB_TYPE(TRB_COMPLETION):
+		xhci_dbg(xhci, "%s - calling handle_cmd_completion\n", __func__);
 		handle_cmd_completion(xhci, &event->event_cmd);
+		xhci_dbg(xhci, "%s - returned from handle_cmd_completion\n", __func__);
 		break;
 	case TRB_TYPE(TRB_PORT_STATUS):
+		xhci_dbg(xhci, "%s - calling handle_port_status\n", __func__);
 		handle_port_status(xhci, event);
+		xhci_dbg(xhci, "%s - returned from handle_port_status\n", __func__);
 		update_ptrs = 0;
 		break;
 	case TRB_TYPE(TRB_TRANSFER):
+		xhci_dbg(xhci, "%s - calling handle_tx_event\n", __func__);
 		ret = handle_tx_event(xhci, &event->trans_event);
+		xhci_dbg(xhci, "%s - returned from handle_tx_event\n", __func__);
 		if (ret < 0)
 			xhci->error_bitmask |= 1 << 9;
 		else
@@ -1093,13 +1199,13 @@ static int prepare_ring(struct xhci_hcd *xhci, struct xhci_ring *ep_ring,
 		 */
 		xhci_warn(xhci, "WARN urb submitted to disabled ep\n");
 		return -ENOENT;
-	case EP_STATE_HALTED:
 	case EP_STATE_ERROR:
-		xhci_warn(xhci, "WARN waiting for halt or error on ep "
-				"to be cleared\n");
+		xhci_warn(xhci, "WARN waiting for error on ep to be cleared\n");
 		/* FIXME event handling code for error needs to clear it */
 		/* XXX not sure if this should be -ENOENT or not */
 		return -EINVAL;
+	case EP_STATE_HALTED:
+		xhci_dbg(xhci, "WARN halted endpoint, queueing URB anyway.\n");
 	case EP_STATE_STOPPED:
 	case EP_STATE_RUNNING:
 		break;
@@ -1128,9 +1234,9 @@ static int prepare_transfer(struct xhci_hcd *xhci,
 		gfp_t mem_flags)
 {
 	int ret;
-
+	struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index);
 	ret = prepare_ring(xhci, xdev->ep_rings[ep_index],
-			xdev->out_ctx->ep[ep_index].ep_info & EP_STATE_MASK,
+			ep_ctx->ep_info & EP_STATE_MASK,
 			num_trbs, mem_flags);
 	if (ret)
 		return ret;
@@ -1285,6 +1391,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	/* Queue the first TRB, even if it's zero-length */
 	do {
 		u32 field = 0;
+		u32 length_field = 0;
 
 		/* Don't change the cycle bit of the first TRB until later */
 		if (first_trb)
@@ -1314,10 +1421,13 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 					(unsigned int) (addr + TRB_MAX_BUFF_SIZE) & ~(TRB_MAX_BUFF_SIZE - 1),
 					(unsigned int) addr + trb_buff_len);
 		}
+		length_field = TRB_LEN(trb_buff_len) |
+			TD_REMAINDER(urb->transfer_buffer_length - running_total) |
+			TRB_INTR_TARGET(0);
 		queue_trb(xhci, ep_ring, false,
-				(u32) addr,
-				(u32) ((u64) addr >> 32),
-				TRB_LEN(trb_buff_len) | TRB_INTR_TARGET(0),
+				lower_32_bits(addr),
+				upper_32_bits(addr),
+				length_field,
 				/* We always want to know if the TRB was short,
 				 * or we won't get an event when it completes.
 				 * (Unless we use event data TRBs, which are a
@@ -1365,7 +1475,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	struct xhci_generic_trb *start_trb;
 	bool first_trb;
 	int start_cycle;
-	u32 field;
+	u32 field, length_field;
 
 	int running_total, trb_buff_len, ret;
 	u64 addr;
@@ -1443,10 +1553,13 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 			td->last_trb = ep_ring->enqueue;
 			field |= TRB_IOC;
 		}
+		length_field = TRB_LEN(trb_buff_len) |
+			TD_REMAINDER(urb->transfer_buffer_length - running_total) |
+			TRB_INTR_TARGET(0);
 		queue_trb(xhci, ep_ring, false,
-				(u32) addr,
-				(u32) ((u64) addr >> 32),
-				TRB_LEN(trb_buff_len) | TRB_INTR_TARGET(0),
+				lower_32_bits(addr),
+				upper_32_bits(addr),
+				length_field,
 				/* We always want to know if the TRB was short,
 				 * or we won't get an event when it completes.
 				 * (Unless we use event data TRBs, which are a
@@ -1478,7 +1591,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	struct usb_ctrlrequest *setup;
 	struct xhci_generic_trb *start_trb;
 	int start_cycle;
-	u32 field;
+	u32 field, length_field;
 	struct xhci_td *td;
 
 	ep_ring = xhci->devs[slot_id]->ep_rings[ep_index];
@@ -1528,13 +1641,16 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 
 	/* If there's data, queue data TRBs */
 	field = 0;
+	length_field = TRB_LEN(urb->transfer_buffer_length) |
+		TD_REMAINDER(urb->transfer_buffer_length) |
+		TRB_INTR_TARGET(0);
 	if (urb->transfer_buffer_length > 0) {
 		if (setup->bRequestType & USB_DIR_IN)
 			field |= TRB_DIR_IN;
 		queue_trb(xhci, ep_ring, false,
 				lower_32_bits(urb->transfer_dma),
 				upper_32_bits(urb->transfer_dma),
-				TRB_LEN(urb->transfer_buffer_length) | TRB_INTR_TARGET(0),
+				length_field,
 				/* Event on short tx */
 				field | TRB_ISP | TRB_TYPE(TRB_DATA) | ep_ring->cycle_state);
 	}
@@ -1603,7 +1719,8 @@ int xhci_queue_slot_control(struct xhci_hcd *xhci, u32 trb_type, u32 slot_id)
 int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
 		u32 slot_id)
 {
-	return queue_command(xhci, in_ctx_ptr, 0, 0,
+	return queue_command(xhci, lower_32_bits(in_ctx_ptr),
+			upper_32_bits(in_ctx_ptr), 0,
 			TRB_TYPE(TRB_ADDR_DEV) | SLOT_ID_FOR_TRB(slot_id));
 }
 
@@ -1611,7 +1728,8 @@ int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
 int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
 		u32 slot_id)
 {
-	return queue_command(xhci, in_ctx_ptr, 0, 0,
+	return queue_command(xhci, lower_32_bits(in_ctx_ptr),
+			upper_32_bits(in_ctx_ptr), 0,
 			TRB_TYPE(TRB_CONFIG_EP) | SLOT_ID_FOR_TRB(slot_id));
 }
 
@@ -1639,10 +1757,23 @@ static int queue_set_tr_deq(struct xhci_hcd *xhci, int slot_id,
 	u32 type = TRB_TYPE(TRB_SET_DEQ);
 
 	addr = xhci_trb_virt_to_dma(deq_seg, deq_ptr);
-	if (addr == 0)
+	if (addr == 0) {
 		xhci_warn(xhci, "WARN Cannot submit Set TR Deq Ptr\n");
 		xhci_warn(xhci, "WARN deq seg = %p, deq pt = %p\n",
 				deq_seg, deq_ptr);
-	return queue_command(xhci, (u32) addr | cycle_state, 0, 0,
+		return 0;
+	}
+	return queue_command(xhci, lower_32_bits(addr) | cycle_state,
+			upper_32_bits(addr), 0,
 			trb_slot_id | trb_ep_index | type);
 }
+
+int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id,
+		unsigned int ep_index)
+{
+	u32 trb_slot_id = SLOT_ID_FOR_TRB(slot_id);
+	u32 trb_ep_index = EP_ID_FOR_TRB(ep_index);
+	u32 type = TRB_TYPE(TRB_RESET_EP);
+
+	return queue_command(xhci, 0, 0, 0, trb_slot_id | trb_ep_index | type);
+}
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 8936eeb5588b..d31d32206ba3 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -25,6 +25,7 @@
 
 #include <linux/usb.h>
 #include <linux/timer.h>
+#include <linux/kernel.h>
 
 #include "../core/hcd.h"
 /* Code sharing between pci-quirks and xhci hcd */
@@ -42,14 +43,6 @@
  * xHCI register interface.
  * This corresponds to the eXtensible Host Controller Interface (xHCI)
  * Revision 0.95 specification
- *
- * Registers should always be accessed with double word or quad word accesses.
- *
- * Some xHCI implementations may support 64-bit address pointers.  Registers
- * with 64-bit address pointers should be written to with dword accesses by
- * writing the low dword first (ptr[0]), then the high dword (ptr[1]) second.
- * xHCI implementations that do not support 64-bit address pointers will ignore
- * the high dword, and write order is irrelevant.
  */
 
 /**
@@ -96,6 +89,7 @@ struct xhci_cap_regs {
 #define HCS_ERST_MAX(p)		(((p) >> 4) & 0xf)
 /* bit 26 Scratchpad restore - for save/restore HW state - not used yet */
 /* bits 27:31 number of Scratchpad buffers SW must allocate for the HW */
+#define HCS_MAX_SCRATCHPAD(p)   (((p) >> 27) & 0x1f)
 
 /* HCSPARAMS3 - hcs_params3 - bitmasks */
 /* bits 0:7, Max U1 to U0 latency for the roothub ports */
@@ -166,10 +160,10 @@ struct xhci_op_regs {
 	u32	reserved1;
 	u32	reserved2;
 	u32	dev_notification;
-	u32	cmd_ring[2];
+	u64	cmd_ring;
 	/* rsvd: offset 0x20-2F */
 	u32	reserved3[4];
-	u32	dcbaa_ptr[2];
+	u64	dcbaa_ptr;
 	u32	config_reg;
 	/* rsvd: offset 0x3C-3FF */
 	u32	reserved4[241];
@@ -254,7 +248,7 @@ struct xhci_op_regs {
 #define CMD_RING_RUNNING	(1 << 3)
 /* bits 4:5 reserved and should be preserved */
 /* Command Ring pointer - bit mask for the lower 32 bits. */
-#define CMD_RING_ADDR_MASK	(0xffffffc0)
+#define CMD_RING_RSVD_BITS	(0x3f)
 
 /* CONFIG - Configure Register - config_reg bitmasks */
 /* bits 0:7 - maximum number of device slots enabled (NumSlotsEn) */
@@ -382,8 +376,8 @@ struct xhci_intr_reg {
 	u32	irq_control;
 	u32	erst_size;
 	u32	rsvd;
-	u32	erst_base[2];
-	u32	erst_dequeue[2];
+	u64	erst_base;
+	u64	erst_dequeue;
 };
 
 /* irq_pending bitmasks */
@@ -453,6 +447,27 @@ struct xhci_doorbell_array {
 
 
 /**
+ * struct xhci_container_ctx
+ * @type: Type of context.  Used to calculated offsets to contained contexts.
+ * @size: Size of the context data
+ * @bytes: The raw context data given to HW
+ * @dma: dma address of the bytes
+ *
+ * Represents either a Device or Input context.  Holds a pointer to the raw
+ * memory used for the context (bytes) and dma address of it (dma).
+ */
+struct xhci_container_ctx {
+	unsigned type;
+#define XHCI_CTX_TYPE_DEVICE  0x1
+#define XHCI_CTX_TYPE_INPUT   0x2
+
+	int size;
+
+	u8 *bytes;
+	dma_addr_t dma;
+};
+
+/**
  * struct xhci_slot_ctx
  * @dev_info:	Route string, device speed, hub info, and last valid endpoint
  * @dev_info2:	Max exit latency for device number, root hub port number
@@ -538,7 +553,7 @@ struct xhci_slot_ctx {
 struct xhci_ep_ctx {
 	u32	ep_info;
 	u32	ep_info2;
-	u32	deq[2];
+	u64	deq;
 	u32	tx_info;
 	/* offset 0x14 - 0x1f reserved for HC internal use */
 	u32	reserved[3];
@@ -589,18 +604,16 @@ struct xhci_ep_ctx {
 
 
 /**
- * struct xhci_device_control
- * Input/Output context; see section 6.2.5.
+ * struct xhci_input_control_context
+ * Input control context; see section 6.2.5.
  *
  * @drop_context:	set the bit of the endpoint context you want to disable
  * @add_context:	set the bit of the endpoint context you want to enable
  */
-struct xhci_device_control {
+struct xhci_input_control_ctx {
 	u32	drop_flags;
 	u32	add_flags;
-	u32	rsvd[6];
-	struct xhci_slot_ctx	slot;
-	struct xhci_ep_ctx	ep[31];
+	u32	rsvd2[6];
 };
 
 /* drop context bitmasks */
@@ -608,7 +621,6 @@ struct xhci_device_control {
 /* add context bitmasks */
 #define	ADD_EP(x)	(0x1 << x)
 
-
 struct xhci_virt_device {
 	/*
 	 * Commands to the hardware are passed an "input context" that
@@ -618,11 +630,10 @@ struct xhci_virt_device {
 	 * track of input and output contexts separately because
 	 * these commands might fail and we don't trust the hardware.
 	 */
-	struct xhci_device_control	*out_ctx;
-	dma_addr_t			out_ctx_dma;
+	struct xhci_container_ctx       *out_ctx;
 	/* Used for addressing devices and configuration changes */
-	struct xhci_device_control	*in_ctx;
-	dma_addr_t			in_ctx_dma;
+	struct xhci_container_ctx       *in_ctx;
+
 	/* FIXME when stream support is added */
 	struct xhci_ring		*ep_rings[31];
 	/* Temporary storage in case the configure endpoint command fails and we
@@ -641,7 +652,7 @@ struct xhci_virt_device {
  */
 struct xhci_device_context_array {
 	/* 64-bit device addresses; we only write 32-bit addresses */
-	u32			dev_context_ptrs[2*MAX_HC_SLOTS];
+	u64			dev_context_ptrs[MAX_HC_SLOTS];
 	/* private xHCD pointers */
 	dma_addr_t	dma;
 };
@@ -654,7 +665,7 @@ struct xhci_device_context_array {
 
 struct xhci_stream_ctx {
 	/* 64-bit stream ring address, cycle state, and stream type */
-	u32	stream_ring[2];
+	u64	stream_ring;
 	/* offset 0x14 - 0x1f reserved for HC internal use */
 	u32	reserved[2];
 };
@@ -662,7 +673,7 @@ struct xhci_stream_ctx {
 
 struct xhci_transfer_event {
 	/* 64-bit buffer address, or immediate data */
-	u32	buffer[2];
+	u64	buffer;
 	u32	transfer_len;
 	/* This field is interpreted differently based on the type of TRB */
 	u32	flags;
@@ -744,7 +755,7 @@ struct xhci_transfer_event {
 
 struct xhci_link_trb {
 	/* 64-bit segment pointer*/
-	u32 segment_ptr[2];
+	u64 segment_ptr;
 	u32 intr_target;
 	u32 control;
 };
@@ -755,7 +766,7 @@ struct xhci_link_trb {
 /* Command completion event TRB */
 struct xhci_event_cmd {
 	/* Pointer to command TRB, or the value passed by the event data trb */
-	u32 cmd_trb[2];
+	u64 cmd_trb;
 	u32 status;
 	u32 flags;
 };
@@ -848,8 +859,8 @@ union xhci_trb {
 #define TRB_CONFIG_EP		12
 /* Evaluate Context Command */
 #define TRB_EVAL_CONTEXT	13
-/* Reset Transfer Ring Command */
-#define TRB_RESET_RING		14
+/* Reset Endpoint Command */
+#define TRB_RESET_EP		14
 /* Stop Transfer Ring Command */
 #define TRB_STOP_RING		15
 /* Set Transfer Ring Dequeue Pointer Command */
@@ -929,6 +940,7 @@ struct xhci_ring {
 	unsigned int		cancels_pending;
 	unsigned int		state;
 #define SET_DEQ_PENDING		(1 << 0)
+#define EP_HALTED		(1 << 1)
 	/* The TRB that was last reported in a stopped endpoint ring */
 	union xhci_trb		*stopped_trb;
 	struct xhci_td		*stopped_td;
@@ -940,9 +952,15 @@ struct xhci_ring {
 	u32			cycle_state;
 };
 
+struct xhci_dequeue_state {
+	struct xhci_segment *new_deq_seg;
+	union xhci_trb *new_deq_ptr;
+	int new_cycle_state;
+};
+
 struct xhci_erst_entry {
 	/* 64-bit event ring segment address */
-	u32	seg_addr[2];
+	u64	seg_addr;
 	u32	seg_size;
 	/* Set to zero */
 	u32	rsvd;
@@ -957,6 +975,13 @@ struct xhci_erst {
 	unsigned int		erst_size;
 };
 
+struct xhci_scratchpad {
+	u64 *sp_array;
+	dma_addr_t sp_dma;
+	void **sp_buffers;
+	dma_addr_t *sp_dma_buffers;
+};
+
 /*
  * Each segment table entry is 4*32bits long.  1K seems like an ok size:
  * (1K bytes * 8bytes/bit) / (4*32 bits) = 64 segment entries in the table,
@@ -1011,6 +1036,9 @@ struct xhci_hcd {
 	struct xhci_ring	*cmd_ring;
 	struct xhci_ring	*event_ring;
 	struct xhci_erst	erst;
+	/* Scratchpad */
+	struct xhci_scratchpad  *scratchpad;
+
 	/* slot enabling and address device helpers */
 	struct completion	addr_dev;
 	int slot_id;
@@ -1071,13 +1099,43 @@ static inline unsigned int xhci_readl(const struct xhci_hcd *xhci,
 static inline void xhci_writel(struct xhci_hcd *xhci,
 		const unsigned int val, __u32 __iomem *regs)
 {
-	if (!in_interrupt())
-		xhci_dbg(xhci,
-			 "`MEM_WRITE_DWORD(3'b000, 32'h%p, 32'h%0x, 4'hf);\n",
-			 regs, val);
+	xhci_dbg(xhci,
+			"`MEM_WRITE_DWORD(3'b000, 32'h%p, 32'h%0x, 4'hf);\n",
+			regs, val);
 	writel(val, regs);
 }
 
+/*
+ * Registers should always be accessed with double word or quad word accesses.
+ *
+ * Some xHCI implementations may support 64-bit address pointers.  Registers
+ * with 64-bit address pointers should be written to with dword accesses by
+ * writing the low dword first (ptr[0]), then the high dword (ptr[1]) second.
+ * xHCI implementations that do not support 64-bit address pointers will ignore
+ * the high dword, and write order is irrelevant.
+ */
+static inline u64 xhci_read_64(const struct xhci_hcd *xhci,
+		__u64 __iomem *regs)
+{
+	__u32 __iomem *ptr = (__u32 __iomem *) regs;
+	u64 val_lo = readl(ptr);
+	u64 val_hi = readl(ptr + 1);
+	return val_lo + (val_hi << 32);
+}
+static inline void xhci_write_64(struct xhci_hcd *xhci,
+		const u64 val, __u64 __iomem *regs)
+{
+	__u32 __iomem *ptr = (__u32 __iomem *) regs;
+	u32 val_lo = lower_32_bits(val);
+	u32 val_hi = upper_32_bits(val);
+
+	xhci_dbg(xhci,
+			"`MEM_WRITE_DWORD(3'b000, 64'h%p, 64'h%0lx, 4'hf);\n",
+			regs, (long unsigned int) val);
+	writel(val_lo, ptr);
+	writel(val_hi, ptr + 1);
+}
+
 /* xHCI debugging */
 void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num);
 void xhci_print_registers(struct xhci_hcd *xhci);
@@ -1090,7 +1148,7 @@ void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring);
 void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst);
 void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci);
 void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring);
-void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_device_control *ctx, dma_addr_t dma, unsigned int last_ep);
+void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep);
 
 /* xHCI memory managment */
 void xhci_mem_cleanup(struct xhci_hcd *xhci);
@@ -1128,6 +1186,7 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags);
 int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status);
 int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
 int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
+void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
 int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
 void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
 
@@ -1148,10 +1207,23 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags, struct urb *urb,
 		int slot_id, unsigned int ep_index);
 int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
 		u32 slot_id);
+int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id,
+		unsigned int ep_index);
+void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
+		unsigned int slot_id, unsigned int ep_index,
+		struct xhci_td *cur_td, struct xhci_dequeue_state *state);
+void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci,
+		struct xhci_ring *ep_ring, unsigned int slot_id,
+		unsigned int ep_index, struct xhci_dequeue_state *deq_state);
 
 /* xHCI roothub code */
 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
 		char *buf, u16 wLength);
 int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
 
+/* xHCI contexts */
+struct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx);
+struct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx);
+struct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int ep_index);
+
 #endif /* __LINUX_XHCI_HCD_H */
diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig
index a68d91a11bee..abe3aa67ed00 100644
--- a/drivers/usb/misc/Kconfig
+++ b/drivers/usb/misc/Kconfig
@@ -220,7 +220,7 @@ config USB_IOWARRIOR
 
 config USB_TEST
 	tristate "USB testing driver"
-	depends on USB && USB_DEVICEFS
+	depends on USB
 	help
 	  This driver is for testing host controller software.  It is used
 	  with specialized device firmware for regression and stress testing,
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index 3c5fe5cee05a..90e1a8dedfa9 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/sched.h>
+#include <linux/smp_lock.h>
 #include <linux/poll.h>
 #include <linux/usb/iowarrior.h>
 
diff --git a/drivers/usb/misc/rio500.c b/drivers/usb/misc/rio500.c
index deb95bb49fd1..d645f3899fe1 100644
--- a/drivers/usb/misc/rio500.c
+++ b/drivers/usb/misc/rio500.c
@@ -32,6 +32,7 @@
 #include <linux/kernel.h>
 #include <linux/signal.h>
 #include <linux/sched.h>
+#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/random.h>
 #include <linux/poll.h>
diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c
index e0ff9ccd866b..29092b8e59ce 100644
--- a/drivers/usb/misc/usblcd.c
+++ b/drivers/usb/misc/usblcd.c
@@ -16,6 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/mutex.h>
 #include <asm/uaccess.h>
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index f8d9045d668a..0f7a30b7d2d1 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -1261,7 +1261,7 @@ static int mon_alloc_buff(struct mon_pgmap *map, int npages)
 			return -ENOMEM;
 		}
 		map[n].ptr = (unsigned char *) vaddr;
-		map[n].pg = virt_to_page(vaddr);
+		map[n].pg = virt_to_page((void *) vaddr);
 	}
 	return 0;
 }
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index 70073b157f0a..803adcb5ac1d 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -12,6 +12,7 @@ config USB_MUSB_HDRC
 	depends on !SUPERH
 	select NOP_USB_XCEIV if ARCH_DAVINCI
 	select TWL4030_USB if MACH_OMAP_3430SDP
+	select NOP_USB_XCEIV if MACH_OMAP3EVM
 	select USB_OTG_UTILS
 	tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)'
 	help
diff --git a/drivers/usb/musb/cppi_dma.h b/drivers/usb/musb/cppi_dma.h
index 8a39de3e6e47..59bf949e589b 100644
--- a/drivers/usb/musb/cppi_dma.h
+++ b/drivers/usb/musb/cppi_dma.h
@@ -5,7 +5,6 @@
 
 #include <linux/slab.h>
 #include <linux/list.h>
-#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/dmapool.h>
 
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index 180d7daa4099..e16ff605c458 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -35,13 +35,14 @@
 #include <mach/hardware.h>
 #include <mach/memory.h>
 #include <mach/gpio.h>
+#include <mach/cputype.h>
 
 #include <asm/mach-types.h>
 
 #include "musb_core.h"
 
 #ifdef CONFIG_MACH_DAVINCI_EVM
-#define GPIO_nVBUS_DRV		87
+#define GPIO_nVBUS_DRV		144
 #endif
 
 #include "davinci.h"
@@ -329,7 +330,6 @@ static irqreturn_t davinci_interrupt(int irq, void *__hci)
 			mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
 			WARNING("VBUS error workaround (delay coming)\n");
 		} else if (is_host_enabled(musb) && drvvbus) {
-			musb->is_active = 1;
 			MUSB_HST_MODE(musb);
 			musb->xceiv->default_a = 1;
 			musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
@@ -343,7 +343,9 @@ static irqreturn_t davinci_interrupt(int irq, void *__hci)
 			portstate(musb->port1_status &= ~USB_PORT_STAT_POWER);
 		}
 
-		/* NOTE:  this must complete poweron within 100 msec */
+		/* NOTE:  this must complete poweron within 100 msec
+		 * (OTG_TIME_A_WAIT_VRISE) but we don't check for that.
+		 */
 		davinci_source_power(musb, drvvbus, 0);
 		DBG(2, "VBUS %s (%s)%s, devctl %02x\n",
 				drvvbus ? "on" : "off",
@@ -411,6 +413,21 @@ int __init musb_platform_init(struct musb *musb)
 		__raw_writel(phy_ctrl, USB_PHY_CTRL);
 	}
 
+	/* On dm355, the default-A state machine needs DRVVBUS control.
+	 * If we won't be a host, there's no need to turn it on.
+	 */
+	if (cpu_is_davinci_dm355()) {
+		u32	deepsleep = __raw_readl(DM355_DEEPSLEEP);
+
+		if (is_host_enabled(musb)) {
+			deepsleep &= ~DRVVBUS_OVERRIDE;
+		} else {
+			deepsleep &= ~DRVVBUS_FORCE;
+			deepsleep |= DRVVBUS_OVERRIDE;
+		}
+		__raw_writel(deepsleep, DM355_DEEPSLEEP);
+	}
+
 	/* reset the controller */
 	musb_writel(tibase, DAVINCI_USB_CTRL_REG, 0x1);
 
@@ -437,6 +454,15 @@ int musb_platform_exit(struct musb *musb)
 	if (is_host_enabled(musb))
 		del_timer_sync(&otg_workaround);
 
+	/* force VBUS off */
+	if (cpu_is_davinci_dm355()) {
+		u32	deepsleep = __raw_readl(DM355_DEEPSLEEP);
+
+		deepsleep &= ~DRVVBUS_FORCE;
+		deepsleep |= DRVVBUS_OVERRIDE;
+		__raw_writel(deepsleep, DM355_DEEPSLEEP);
+	}
+
 	davinci_source_power(musb, 0 /*off*/, 1);
 
 	/* delay, to avoid problems with module reload */
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 554a414f65d1..c7c1ca0494cd 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1326,7 +1326,6 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb)
 	int		i;
 
 	/* log core options (read using indexed model) */
-	musb_ep_select(mbase, 0);
 	reg = musb_read_configdata(mbase);
 
 	strcpy(aInfo, (reg & MUSB_CONFIGDATA_UTMIDW) ? "UTMI-16" : "UTMI-8");
@@ -1990,7 +1989,7 @@ bad_config:
 	if (status < 0)
 		goto fail2;
 
-#ifdef CONFIG_USB_OTG
+#ifdef CONFIG_USB_MUSB_OTG
 	setup_timer(&musb->otg_timer, musb_otg_timer_func, (unsigned long) musb);
 #endif
 
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index f3772ca3b2cf..381d648a36b8 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -38,7 +38,6 @@
 #include <linux/slab.h>
 #include <linux/list.h>
 #include <linux/interrupt.h>
-#include <linux/smp_lock.h>
 #include <linux/errno.h>
 #include <linux/timer.h>
 #include <linux/clk.h>
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
index 40ed50ecedff..7a6778675ad3 100644
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ b/drivers/usb/musb/musb_gadget_ep0.c
@@ -407,7 +407,7 @@ stall:
 					csr |= MUSB_RXCSR_P_SENDSTALL
 						| MUSB_RXCSR_FLUSHFIFO
 						| MUSB_RXCSR_CLRDATATOG
-						| MUSB_TXCSR_P_WZC_BITS;
+						| MUSB_RXCSR_P_WZC_BITS;
 					musb_writew(regs, MUSB_RXCSR,
 							csr);
 				}
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 94a2a350a414..cf94511485f2 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -373,7 +373,7 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb,
 		musb_save_toggle(qh, is_in, urb);
 		break;
 	case USB_ENDPOINT_XFER_ISOC:
-		if (urb->error_count)
+		if (status == 0 && urb->error_count)
 			status = -EXDEV;
 		break;
 	}
@@ -2235,13 +2235,30 @@ static void musb_h_stop(struct usb_hcd *hcd)
 static int musb_bus_suspend(struct usb_hcd *hcd)
 {
 	struct musb	*musb = hcd_to_musb(hcd);
+	u8		devctl;
 
-	if (musb->xceiv->state == OTG_STATE_A_SUSPEND)
+	if (!is_host_active(musb))
 		return 0;
 
-	if (is_host_active(musb) && musb->is_active) {
-		WARNING("trying to suspend as %s is_active=%i\n",
-			otg_state_string(musb), musb->is_active);
+	switch (musb->xceiv->state) {
+	case OTG_STATE_A_SUSPEND:
+		return 0;
+	case OTG_STATE_A_WAIT_VRISE:
+		/* ID could be grounded even if there's no device
+		 * on the other end of the cable.  NOTE that the
+		 * A_WAIT_VRISE timers are messy with MUSB...
+		 */
+		devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+		if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS)
+			musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
+		break;
+	default:
+		break;
+	}
+
+	if (musb->is_active) {
+		WARNING("trying to suspend as %s while active\n",
+				otg_state_string(musb));
 		return -EBUSY;
 	} else
 		return 0;
diff --git a/drivers/usb/musb/musb_regs.h b/drivers/usb/musb/musb_regs.h
index de3b2f18db44..fbfd3fd9ce1f 100644
--- a/drivers/usb/musb/musb_regs.h
+++ b/drivers/usb/musb/musb_regs.h
@@ -323,6 +323,7 @@ static inline void  musb_write_rxfifoadd(void __iomem *mbase, u16 c_off)
 
 static inline u8 musb_read_configdata(void __iomem *mbase)
 {
+	musb_writeb(mbase, MUSB_INDEX, 0);
 	return musb_readb(mbase, 0x10 + MUSB_CONFIGDATA);
 }
 
diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig
index 69feeec1628c..aa884d072f0b 100644
--- a/drivers/usb/otg/Kconfig
+++ b/drivers/usb/otg/Kconfig
@@ -59,18 +59,4 @@ config NOP_USB_XCEIV
 	 built-in with usb ip or which are autonomous and doesn't require any
 	 phy programming such as ISP1x04 etc.
 
-config USB_LANGWELL_OTG
-	tristate "Intel Langwell USB OTG dual-role support"
-	depends on USB && MRST
-	select USB_OTG
-	select USB_OTG_UTILS
-	help
-	  Say Y here if you want to build Intel Langwell USB OTG
-	  transciever driver in kernel. This driver implements role
-	  switch between EHCI host driver and Langwell USB OTG
-	  client driver.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called langwell_otg.
-
 endif # USB || OTG
diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile
index 6d1abdd3c0ac..208167856529 100644
--- a/drivers/usb/otg/Makefile
+++ b/drivers/usb/otg/Makefile
@@ -9,7 +9,6 @@ obj-$(CONFIG_USB_OTG_UTILS)	+= otg.o
 obj-$(CONFIG_USB_GPIO_VBUS)	+= gpio_vbus.o
 obj-$(CONFIG_ISP1301_OMAP)	+= isp1301_omap.o
 obj-$(CONFIG_TWL4030_USB)	+= twl4030-usb.o
-obj-$(CONFIG_USB_LANGWELL_OTG)	+= langwell_otg.o
 obj-$(CONFIG_NOP_USB_XCEIV)	+= nop-usb-xceiv.o
 
 ccflags-$(CONFIG_USB_DEBUG)	+= -DDEBUG
diff --git a/drivers/usb/otg/langwell_otg.c b/drivers/usb/otg/langwell_otg.c
deleted file mode 100644
index 6f628d0e9f39..000000000000
--- a/drivers/usb/otg/langwell_otg.c
+++ /dev/null
@@ -1,1915 +0,0 @@
-/*
- * Intel Langwell USB OTG transceiver driver
- * Copyright (C) 2008 - 2009, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- *
- */
-/* This driver helps to switch Langwell OTG controller function between host
- * and peripheral. It works with EHCI driver and Langwell client controller
- * driver together.
- */
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/moduleparam.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb.h>
-#include <linux/usb/otg.h>
-#include <linux/notifier.h>
-#include <asm/ipc_defs.h>
-#include <linux/delay.h>
-#include "../core/hcd.h"
-
-#include <linux/usb/langwell_otg.h>
-
-#define	DRIVER_DESC		"Intel Langwell USB OTG transceiver driver"
-#define	DRIVER_VERSION		"3.0.0.32L.0002"
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_AUTHOR("Henry Yuan <hang.yuan@intel.com>, Hao Wu <hao.wu@intel.com>");
-MODULE_VERSION(DRIVER_VERSION);
-MODULE_LICENSE("GPL");
-
-static const char driver_name[] = "langwell_otg";
-
-static int langwell_otg_probe(struct pci_dev *pdev,
-			const struct pci_device_id *id);
-static void langwell_otg_remove(struct pci_dev *pdev);
-static int langwell_otg_suspend(struct pci_dev *pdev, pm_message_t message);
-static int langwell_otg_resume(struct pci_dev *pdev);
-
-static int langwell_otg_set_host(struct otg_transceiver *otg,
-				struct usb_bus *host);
-static int langwell_otg_set_peripheral(struct otg_transceiver *otg,
-				struct usb_gadget *gadget);
-static int langwell_otg_start_srp(struct otg_transceiver *otg);
-
-static const struct pci_device_id pci_ids[] = {{
-	.class =        ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
-	.class_mask =   ~0,
-	.vendor =	0x8086,
-	.device =	0x0811,
-	.subvendor =	PCI_ANY_ID,
-	.subdevice =	PCI_ANY_ID,
-}, { /* end: all zeroes */ }
-};
-
-static struct pci_driver otg_pci_driver = {
-	.name =		(char *) driver_name,
-	.id_table =	pci_ids,
-
-	.probe =	langwell_otg_probe,
-	.remove =	langwell_otg_remove,
-
-	.suspend =	langwell_otg_suspend,
-	.resume =	langwell_otg_resume,
-};
-
-static const char *state_string(enum usb_otg_state state)
-{
-	switch (state) {
-	case OTG_STATE_A_IDLE:
-		return "a_idle";
-	case OTG_STATE_A_WAIT_VRISE:
-		return "a_wait_vrise";
-	case OTG_STATE_A_WAIT_BCON:
-		return "a_wait_bcon";
-	case OTG_STATE_A_HOST:
-		return "a_host";
-	case OTG_STATE_A_SUSPEND:
-		return "a_suspend";
-	case OTG_STATE_A_PERIPHERAL:
-		return "a_peripheral";
-	case OTG_STATE_A_WAIT_VFALL:
-		return "a_wait_vfall";
-	case OTG_STATE_A_VBUS_ERR:
-		return "a_vbus_err";
-	case OTG_STATE_B_IDLE:
-		return "b_idle";
-	case OTG_STATE_B_SRP_INIT:
-		return "b_srp_init";
-	case OTG_STATE_B_PERIPHERAL:
-		return "b_peripheral";
-	case OTG_STATE_B_WAIT_ACON:
-		return "b_wait_acon";
-	case OTG_STATE_B_HOST:
-		return "b_host";
-	default:
-		return "UNDEFINED";
-	}
-}
-
-/* HSM timers */
-static inline struct langwell_otg_timer *otg_timer_initializer
-(void (*function)(unsigned long), unsigned long expires, unsigned long data)
-{
-	struct langwell_otg_timer *timer;
-	timer = kmalloc(sizeof(struct langwell_otg_timer), GFP_KERNEL);
-	timer->function = function;
-	timer->expires = expires;
-	timer->data = data;
-	return timer;
-}
-
-static struct langwell_otg_timer *a_wait_vrise_tmr, *a_wait_bcon_tmr,
-	*a_aidl_bdis_tmr, *b_ase0_brst_tmr, *b_se0_srp_tmr, *b_srp_res_tmr,
-	*b_bus_suspend_tmr;
-
-static struct list_head active_timers;
-
-static struct langwell_otg *the_transceiver;
-
-/* host/client notify transceiver when event affects HNP state */
-void langwell_update_transceiver()
-{
-	otg_dbg("transceiver driver is notified\n");
-	queue_work(the_transceiver->qwork, &the_transceiver->work);
-}
-EXPORT_SYMBOL(langwell_update_transceiver);
-
-static int langwell_otg_set_host(struct otg_transceiver *otg,
-					struct usb_bus *host)
-{
-	otg->host = host;
-
-	return 0;
-}
-
-static int langwell_otg_set_peripheral(struct otg_transceiver *otg,
-					struct usb_gadget *gadget)
-{
-	otg->gadget = gadget;
-
-	return 0;
-}
-
-static int langwell_otg_set_power(struct otg_transceiver *otg,
-				unsigned mA)
-{
-	return 0;
-}
-
-/* A-device drives vbus, controlled through PMIC CHRGCNTL register*/
-static void langwell_otg_drv_vbus(int on)
-{
-	struct ipc_pmic_reg_data	pmic_data = {0};
-	struct ipc_pmic_reg_data	battery_data;
-
-	/* Check if battery is attached or not */
-	battery_data.pmic_reg_data[0].register_address = 0xd2;
-	battery_data.ioc = 0;
-	battery_data.num_entries = 1;
-	if (ipc_pmic_register_read(&battery_data)) {
-		otg_dbg("Failed to read PMIC register 0xd2.\n");
-		return;
-	}
-
-	if ((battery_data.pmic_reg_data[0].value & 0x20) == 0) {
-		otg_dbg("no battery attached\n");
-		return;
-	}
-
-	/* Workaround for battery attachment issue */
-	if (battery_data.pmic_reg_data[0].value == 0x34) {
-		otg_dbg("battery \n");
-		return;
-	}
-
-	otg_dbg("battery attached\n");
-
-	pmic_data.ioc = 0;
-	pmic_data.pmic_reg_data[0].register_address = 0xD4;
-	pmic_data.num_entries = 1;
-	if (on)
-		pmic_data.pmic_reg_data[0].value = 0x20;
-	else
-		pmic_data.pmic_reg_data[0].value = 0xc0;
-
-	if (ipc_pmic_register_write(&pmic_data, TRUE))
-		otg_dbg("Failed to write PMIC.\n");
-
-}
-
-/* charge vbus or discharge vbus through a resistor to ground */
-static void langwell_otg_chrg_vbus(int on)
-{
-
-	u32	val;
-
-	val = readl(the_transceiver->regs + CI_OTGSC);
-
-	if (on)
-		writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_VC,
-				the_transceiver->regs + CI_OTGSC);
-	else
-		writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_VD,
-				the_transceiver->regs + CI_OTGSC);
-
-}
-
-/* Start SRP */
-static int langwell_otg_start_srp(struct otg_transceiver *otg)
-{
-	u32	val;
-
-	otg_dbg("Start SRP ->\n");
-
-	val = readl(the_transceiver->regs + CI_OTGSC);
-
-	writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HADP,
-		the_transceiver->regs + CI_OTGSC);
-
-	/* Check if the data plus is finished or not */
-	msleep(8);
-	val = readl(the_transceiver->regs + CI_OTGSC);
-	if (val & (OTGSC_HADP | OTGSC_DP))
-		otg_dbg("DataLine SRP Error\n");
-
-	/* FIXME: VBus SRP */
-
-	return 0;
-}
-
-
-/* stop SOF via bus_suspend */
-static void langwell_otg_loc_sof(int on)
-{
-	struct usb_hcd	*hcd;
-	int		err;
-
-	otg_dbg("loc_sof -> %d\n", on);
-
-	hcd = bus_to_hcd(the_transceiver->otg.host);
-	if (on)
-		err = hcd->driver->bus_resume(hcd);
-	else
-		err = hcd->driver->bus_suspend(hcd);
-
-	if (err)
-		otg_dbg("Failed to resume/suspend bus - %d\n", err);
-}
-
-static void langwell_otg_phy_low_power(int on)
-{
-	u32	val;
-
-	otg_dbg("phy low power mode-> %d\n", on);
-
-	val = readl(the_transceiver->regs + CI_HOSTPC1);
-	if (on)
-		writel(val | HOSTPC1_PHCD, the_transceiver->regs + CI_HOSTPC1);
-	else
-		writel(val & ~HOSTPC1_PHCD, the_transceiver->regs + CI_HOSTPC1);
-}
-
-/* Enable/Disable OTG interrupt */
-static void langwell_otg_intr(int on)
-{
-	u32 val;
-
-	otg_dbg("interrupt -> %d\n", on);
-
-	val = readl(the_transceiver->regs + CI_OTGSC);
-	if (on) {
-		val = val | (OTGSC_INTEN_MASK | OTGSC_IDPU);
-		writel(val, the_transceiver->regs + CI_OTGSC);
-	} else {
-		val = val & ~(OTGSC_INTEN_MASK | OTGSC_IDPU);
-		writel(val, the_transceiver->regs + CI_OTGSC);
-	}
-}
-
-/* set HAAR: Hardware Assist Auto-Reset */
-static void langwell_otg_HAAR(int on)
-{
-	u32	val;
-
-	otg_dbg("HAAR -> %d\n", on);
-
-	val = readl(the_transceiver->regs + CI_OTGSC);
-	if (on)
-		writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HAAR,
-				the_transceiver->regs + CI_OTGSC);
-	else
-		writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HAAR,
-				the_transceiver->regs + CI_OTGSC);
-}
-
-/* set HABA: Hardware Assist B-Disconnect to A-Connect */
-static void langwell_otg_HABA(int on)
-{
-	u32	val;
-
-	otg_dbg("HABA -> %d\n", on);
-
-	val = readl(the_transceiver->regs + CI_OTGSC);
-	if (on)
-		writel((val & ~OTGSC_INTSTS_MASK) | OTGSC_HABA,
-				the_transceiver->regs + CI_OTGSC);
-	else
-		writel((val & ~OTGSC_INTSTS_MASK) & ~OTGSC_HABA,
-				the_transceiver->regs + CI_OTGSC);
-}
-
-static int langwell_otg_check_se0_srp(int on)
-{
-	u32 val;
-
-	int delay_time = TB_SE0_SRP * 10; /* step is 100us */
-
-	otg_dbg("check_se0_srp -> \n");
-
-	do {
-		udelay(100);
-		if (!delay_time--)
-			break;
-		val = readl(the_transceiver->regs + CI_PORTSC1);
-		val &= PORTSC_LS;
-	} while (!val);
-
-	otg_dbg("check_se0_srp <- \n");
-	return val;
-}
-
-/* The timeout callback function to set time out bit */
-static void set_tmout(unsigned long indicator)
-{
-	*(int *)indicator = 1;
-}
-
-void langwell_otg_nsf_msg(unsigned long indicator)
-{
-	switch (indicator) {
-	case 2:
-	case 4:
-	case 6:
-	case 7:
-		printk(KERN_ERR "OTG:NSF-%lu - deivce not responding\n",
-				indicator);
-		break;
-	case 3:
-		printk(KERN_ERR "OTG:NSF-%lu - deivce not supported\n",
-				indicator);
-		break;
-	default:
-		printk(KERN_ERR "Do not have this kind of NSF\n");
-		break;
-	}
-}
-
-/* Initialize timers */
-static void langwell_otg_init_timers(struct otg_hsm *hsm)
-{
-	/* HSM used timers */
-	a_wait_vrise_tmr = otg_timer_initializer(&set_tmout, TA_WAIT_VRISE,
-				(unsigned long)&hsm->a_wait_vrise_tmout);
-	a_wait_bcon_tmr = otg_timer_initializer(&set_tmout, TA_WAIT_BCON,
-				(unsigned long)&hsm->a_wait_bcon_tmout);
-	a_aidl_bdis_tmr = otg_timer_initializer(&set_tmout, TA_AIDL_BDIS,
-				(unsigned long)&hsm->a_aidl_bdis_tmout);
-	b_ase0_brst_tmr = otg_timer_initializer(&set_tmout, TB_ASE0_BRST,
-				(unsigned long)&hsm->b_ase0_brst_tmout);
-	b_se0_srp_tmr = otg_timer_initializer(&set_tmout, TB_SE0_SRP,
-				(unsigned long)&hsm->b_se0_srp);
-	b_srp_res_tmr = otg_timer_initializer(&set_tmout, TB_SRP_RES,
-				(unsigned long)&hsm->b_srp_res_tmout);
-	b_bus_suspend_tmr = otg_timer_initializer(&set_tmout, TB_BUS_SUSPEND,
-				(unsigned long)&hsm->b_bus_suspend_tmout);
-}
-
-/* Free timers */
-static void langwell_otg_free_timers(void)
-{
-	kfree(a_wait_vrise_tmr);
-	kfree(a_wait_bcon_tmr);
-	kfree(a_aidl_bdis_tmr);
-	kfree(b_ase0_brst_tmr);
-	kfree(b_se0_srp_tmr);
-	kfree(b_srp_res_tmr);
-	kfree(b_bus_suspend_tmr);
-}
-
-/* Add timer to timer list */
-static void langwell_otg_add_timer(void *gtimer)
-{
-	struct langwell_otg_timer *timer = (struct langwell_otg_timer *)gtimer;
-	struct langwell_otg_timer *tmp_timer;
-	u32	val32;
-
-	/* Check if the timer is already in the active list,
-	 * if so update timer count
-	 */
-	list_for_each_entry(tmp_timer, &active_timers, list)
-		if (tmp_timer == timer) {
-			timer->count = timer->expires;
-			return;
-		}
-	timer->count = timer->expires;
-
-	if (list_empty(&active_timers)) {
-		val32 = readl(the_transceiver->regs + CI_OTGSC);
-		writel(val32 | OTGSC_1MSE, the_transceiver->regs + CI_OTGSC);
-	}
-
-	list_add_tail(&timer->list, &active_timers);
-}
-
-/* Remove timer from the timer list; clear timeout status */
-static void langwell_otg_del_timer(void *gtimer)
-{
-	struct langwell_otg_timer *timer = (struct langwell_otg_timer *)gtimer;
-	struct langwell_otg_timer *tmp_timer, *del_tmp;
-	u32 val32;
-
-	list_for_each_entry_safe(tmp_timer, del_tmp, &active_timers, list)
-		if (tmp_timer == timer)
-			list_del(&timer->list);
-
-	if (list_empty(&active_timers)) {
-		val32 = readl(the_transceiver->regs + CI_OTGSC);
-		writel(val32 & ~OTGSC_1MSE, the_transceiver->regs + CI_OTGSC);
-	}
-}
-
-/* Reduce timer count by 1, and find timeout conditions.*/
-static int langwell_otg_tick_timer(u32 *int_sts)
-{
-	struct langwell_otg_timer *tmp_timer, *del_tmp;
-	int expired = 0;
-
-	list_for_each_entry_safe(tmp_timer, del_tmp, &active_timers, list) {
-		tmp_timer->count--;
-		/* check if timer expires */
-		if (!tmp_timer->count) {
-			list_del(&tmp_timer->list);
-			tmp_timer->function(tmp_timer->data);
-			expired = 1;
-		}
-	}
-
-	if (list_empty(&active_timers)) {
-		otg_dbg("tick timer: disable 1ms int\n");
-		*int_sts = *int_sts & ~OTGSC_1MSE;
-	}
-	return expired;
-}
-
-static void reset_otg(void)
-{
-	u32	val;
-	int	delay_time = 1000;
-
-	otg_dbg("reseting OTG controller ...\n");
-	val = readl(the_transceiver->regs + CI_USBCMD);
-	writel(val | USBCMD_RST, the_transceiver->regs + CI_USBCMD);
-	do {
-		udelay(100);
-		if (!delay_time--)
-			otg_dbg("reset timeout\n");
-		val = readl(the_transceiver->regs + CI_USBCMD);
-		val &= USBCMD_RST;
-	} while (val != 0);
-	otg_dbg("reset done.\n");
-}
-
-static void set_host_mode(void)
-{
-	u32 	val;
-
-	reset_otg();
-	val = readl(the_transceiver->regs + CI_USBMODE);
-	val = (val & (~USBMODE_CM)) | USBMODE_HOST;
-	writel(val, the_transceiver->regs + CI_USBMODE);
-}
-
-static void set_client_mode(void)
-{
-	u32 	val;
-
-	reset_otg();
-	val = readl(the_transceiver->regs + CI_USBMODE);
-	val = (val & (~USBMODE_CM)) | USBMODE_DEVICE;
-	writel(val, the_transceiver->regs + CI_USBMODE);
-}
-
-static void init_hsm(void)
-{
-	struct langwell_otg	*langwell = the_transceiver;
-	u32			val32;
-
-	/* read OTGSC after reset */
-	val32 = readl(langwell->regs + CI_OTGSC);
-	otg_dbg("%s: OTGSC init value = 0x%x\n", __func__, val32);
-
-	/* set init state */
-	if (val32 & OTGSC_ID) {
-		langwell->hsm.id = 1;
-		langwell->otg.default_a = 0;
-		set_client_mode();
-		langwell->otg.state = OTG_STATE_B_IDLE;
-		langwell_otg_drv_vbus(0);
-	} else {
-		langwell->hsm.id = 0;
-		langwell->otg.default_a = 1;
-		set_host_mode();
-		langwell->otg.state = OTG_STATE_A_IDLE;
-	}
-
-	/* set session indicator */
-	if (val32 & OTGSC_BSE)
-		langwell->hsm.b_sess_end = 1;
-	if (val32 & OTGSC_BSV)
-		langwell->hsm.b_sess_vld = 1;
-	if (val32 & OTGSC_ASV)
-		langwell->hsm.a_sess_vld = 1;
-	if (val32 & OTGSC_AVV)
-		langwell->hsm.a_vbus_vld = 1;
-
-	/* defautly power the bus */
-	langwell->hsm.a_bus_req = 1;
-	langwell->hsm.a_bus_drop = 0;
-	/* defautly don't request bus as B device */
-	langwell->hsm.b_bus_req = 0;
-	/* no system error */
-	langwell->hsm.a_clr_err = 0;
-}
-
-static irqreturn_t otg_dummy_irq(int irq, void *_dev)
-{
-	void __iomem	*reg_base = _dev;
-	u32	val;
-	u32	int_mask = 0;
-
-	val = readl(reg_base + CI_USBMODE);
-	if ((val & USBMODE_CM) != USBMODE_DEVICE)
-		return IRQ_NONE;
-
-	val = readl(reg_base + CI_USBSTS);
-	int_mask = val & INTR_DUMMY_MASK;
-
-	if (int_mask == 0)
-		return IRQ_NONE;
-
-	/* clear hsm.b_conn here since host driver can't detect it
-	*  otg_dummy_irq called means B-disconnect happened.
-	*/
-	if (the_transceiver->hsm.b_conn) {
-		the_transceiver->hsm.b_conn = 0;
-		if (spin_trylock(&the_transceiver->wq_lock)) {
-			queue_work(the_transceiver->qwork,
-				&the_transceiver->work);
-			spin_unlock(&the_transceiver->wq_lock);
-		}
-	}
-	/* Clear interrupts */
-	writel(int_mask, reg_base + CI_USBSTS);
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t otg_irq(int irq, void *_dev)
-{
-	struct	langwell_otg *langwell = _dev;
-	u32	int_sts, int_en;
-	u32	int_mask = 0;
-	int	flag = 0;
-
-	int_sts = readl(langwell->regs + CI_OTGSC);
-	int_en = (int_sts & OTGSC_INTEN_MASK) >> 8;
-	int_mask = int_sts & int_en;
-	if (int_mask == 0)
-		return IRQ_NONE;
-
-	if (int_mask & OTGSC_IDIS) {
-		otg_dbg("%s: id change int\n", __func__);
-		langwell->hsm.id = (int_sts & OTGSC_ID) ? 1 : 0;
-		flag = 1;
-	}
-	if (int_mask & OTGSC_DPIS) {
-		otg_dbg("%s: data pulse int\n", __func__);
-		langwell->hsm.a_srp_det = (int_sts & OTGSC_DPS) ? 1 : 0;
-		flag = 1;
-	}
-	if (int_mask & OTGSC_BSEIS) {
-		otg_dbg("%s: b session end int\n", __func__);
-		langwell->hsm.b_sess_end = (int_sts & OTGSC_BSE) ? 1 : 0;
-		flag = 1;
-	}
-	if (int_mask & OTGSC_BSVIS) {
-		otg_dbg("%s: b session valid int\n", __func__);
-		langwell->hsm.b_sess_vld = (int_sts & OTGSC_BSV) ? 1 : 0;
-		flag = 1;
-	}
-	if (int_mask & OTGSC_ASVIS) {
-		otg_dbg("%s: a session valid int\n", __func__);
-		langwell->hsm.a_sess_vld = (int_sts & OTGSC_ASV) ? 1 : 0;
-		flag = 1;
-	}
-	if (int_mask & OTGSC_AVVIS) {
-		otg_dbg("%s: a vbus valid int\n", __func__);
-		langwell->hsm.a_vbus_vld = (int_sts & OTGSC_AVV) ? 1 : 0;
-		flag = 1;
-	}
-
-	if (int_mask & OTGSC_1MSS) {
-		/* need to schedule otg_work if any timer is expired */
-		if (langwell_otg_tick_timer(&int_sts))
-			flag = 1;
-	}
-
-	writel((int_sts & ~OTGSC_INTSTS_MASK) | int_mask,
-			langwell->regs + CI_OTGSC);
-	if (flag)
-		queue_work(langwell->qwork, &langwell->work);
-
-	return IRQ_HANDLED;
-}
-
-static void langwell_otg_work(struct work_struct *work)
-{
-	struct langwell_otg *langwell = container_of(work,
-					struct langwell_otg, work);
-	int	retval;
-
-	otg_dbg("%s: old state = %s\n", __func__,
-			state_string(langwell->otg.state));
-
-	switch (langwell->otg.state) {
-	case OTG_STATE_UNDEFINED:
-	case OTG_STATE_B_IDLE:
-		if (!langwell->hsm.id) {
-			langwell_otg_del_timer(b_srp_res_tmr);
-			langwell->otg.default_a = 1;
-			langwell->hsm.a_srp_det = 0;
-
-			langwell_otg_chrg_vbus(0);
-			langwell_otg_drv_vbus(0);
-
-			set_host_mode();
-			langwell->otg.state = OTG_STATE_A_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (langwell->hsm.b_srp_res_tmout) {
-			langwell->hsm.b_srp_res_tmout = 0;
-			langwell->hsm.b_bus_req = 0;
-			langwell_otg_nsf_msg(6);
-		} else if (langwell->hsm.b_sess_vld) {
-			langwell_otg_del_timer(b_srp_res_tmr);
-			langwell->hsm.b_sess_end = 0;
-			langwell->hsm.a_bus_suspend = 0;
-
-			langwell_otg_chrg_vbus(0);
-			if (langwell->client_ops) {
-				langwell->client_ops->resume(langwell->pdev);
-				langwell->otg.state = OTG_STATE_B_PERIPHERAL;
-			} else
-				otg_dbg("client driver not loaded.\n");
-
-		} else if (langwell->hsm.b_bus_req &&
-				(langwell->hsm.b_sess_end)) {
-			/* workaround for b_se0_srp detection */
-			retval = langwell_otg_check_se0_srp(0);
-			if (retval) {
-				langwell->hsm.b_bus_req = 0;
-				otg_dbg("LS is not SE0, try again later\n");
-			} else {
-				/* Start SRP */
-				langwell_otg_start_srp(&langwell->otg);
-				langwell_otg_add_timer(b_srp_res_tmr);
-			}
-		}
-		break;
-	case OTG_STATE_B_SRP_INIT:
-		if (!langwell->hsm.id) {
-			langwell->otg.default_a = 1;
-			langwell->hsm.a_srp_det = 0;
-
-			langwell_otg_drv_vbus(0);
-			langwell_otg_chrg_vbus(0);
-
-			langwell->otg.state = OTG_STATE_A_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (langwell->hsm.b_sess_vld) {
-			langwell_otg_chrg_vbus(0);
-			if (langwell->client_ops) {
-				langwell->client_ops->resume(langwell->pdev);
-				langwell->otg.state = OTG_STATE_B_PERIPHERAL;
-			} else
-				otg_dbg("client driver not loaded.\n");
-		}
-		break;
-	case OTG_STATE_B_PERIPHERAL:
-		if (!langwell->hsm.id) {
-			langwell->otg.default_a = 1;
-			langwell->hsm.a_srp_det = 0;
-
-			langwell_otg_drv_vbus(0);
-			langwell_otg_chrg_vbus(0);
-			set_host_mode();
-
-			if (langwell->client_ops) {
-				langwell->client_ops->suspend(langwell->pdev,
-					PMSG_FREEZE);
-			} else
-				otg_dbg("client driver has been removed.\n");
-
-			langwell->otg.state = OTG_STATE_A_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (!langwell->hsm.b_sess_vld) {
-			langwell->hsm.b_hnp_enable = 0;
-
-			if (langwell->client_ops) {
-				langwell->client_ops->suspend(langwell->pdev,
-					PMSG_FREEZE);
-			} else
-				otg_dbg("client driver has been removed.\n");
-
-			langwell->otg.state = OTG_STATE_B_IDLE;
-		} else if (langwell->hsm.b_bus_req && langwell->hsm.b_hnp_enable
-			&& langwell->hsm.a_bus_suspend) {
-
-			if (langwell->client_ops) {
-				langwell->client_ops->suspend(langwell->pdev,
-					PMSG_FREEZE);
-			} else
-				otg_dbg("client driver has been removed.\n");
-
-			langwell_otg_HAAR(1);
-			langwell->hsm.a_conn = 0;
-
-			if (langwell->host_ops) {
-				langwell->host_ops->probe(langwell->pdev,
-					langwell->host_ops->id_table);
-				langwell->otg.state = OTG_STATE_B_WAIT_ACON;
-			} else
-				otg_dbg("host driver not loaded.\n");
-
-			langwell->hsm.a_bus_resume = 0;
-			langwell->hsm.b_ase0_brst_tmout = 0;
-			langwell_otg_add_timer(b_ase0_brst_tmr);
-		}
-		break;
-
-	case OTG_STATE_B_WAIT_ACON:
-		if (!langwell->hsm.id) {
-			langwell_otg_del_timer(b_ase0_brst_tmr);
-			langwell->otg.default_a = 1;
-			langwell->hsm.a_srp_det = 0;
-
-			langwell_otg_drv_vbus(0);
-			langwell_otg_chrg_vbus(0);
-			set_host_mode();
-
-			langwell_otg_HAAR(0);
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell->otg.state = OTG_STATE_A_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (!langwell->hsm.b_sess_vld) {
-			langwell_otg_del_timer(b_ase0_brst_tmr);
-			langwell->hsm.b_hnp_enable = 0;
-			langwell->hsm.b_bus_req = 0;
-			langwell_otg_chrg_vbus(0);
-			langwell_otg_HAAR(0);
-
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell->otg.state = OTG_STATE_B_IDLE;
-		} else if (langwell->hsm.a_conn) {
-			langwell_otg_del_timer(b_ase0_brst_tmr);
-			langwell_otg_HAAR(0);
-			langwell->otg.state = OTG_STATE_B_HOST;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (langwell->hsm.a_bus_resume ||
-				langwell->hsm.b_ase0_brst_tmout) {
-			langwell_otg_del_timer(b_ase0_brst_tmr);
-			langwell_otg_HAAR(0);
-			langwell_otg_nsf_msg(7);
-
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-
-			langwell->hsm.a_bus_suspend = 0;
-			langwell->hsm.b_bus_req = 0;
-
-			if (langwell->client_ops)
-				langwell->client_ops->resume(langwell->pdev);
-			else
-				otg_dbg("client driver not loaded.\n");
-
-			langwell->otg.state = OTG_STATE_B_PERIPHERAL;
-		}
-		break;
-
-	case OTG_STATE_B_HOST:
-		if (!langwell->hsm.id) {
-			langwell->otg.default_a = 1;
-			langwell->hsm.a_srp_det = 0;
-
-			langwell_otg_drv_vbus(0);
-			langwell_otg_chrg_vbus(0);
-			set_host_mode();
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell->otg.state = OTG_STATE_A_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (!langwell->hsm.b_sess_vld) {
-			langwell->hsm.b_hnp_enable = 0;
-			langwell->hsm.b_bus_req = 0;
-			langwell_otg_chrg_vbus(0);
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell->otg.state = OTG_STATE_B_IDLE;
-		} else if ((!langwell->hsm.b_bus_req) ||
-				(!langwell->hsm.a_conn)) {
-			langwell->hsm.b_bus_req = 0;
-			langwell_otg_loc_sof(0);
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-
-			langwell->hsm.a_bus_suspend = 0;
-
-			if (langwell->client_ops)
-				langwell->client_ops->resume(langwell->pdev);
-			else
-				otg_dbg("client driver not loaded.\n");
-
-			langwell->otg.state = OTG_STATE_B_PERIPHERAL;
-		}
-		break;
-
-	case OTG_STATE_A_IDLE:
-		langwell->otg.default_a = 1;
-		if (langwell->hsm.id) {
-			langwell->otg.default_a = 0;
-			langwell->hsm.b_bus_req = 0;
-			langwell_otg_drv_vbus(0);
-			langwell_otg_chrg_vbus(0);
-
-			langwell->otg.state = OTG_STATE_B_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (langwell->hsm.a_sess_vld) {
-			langwell_otg_drv_vbus(1);
-			langwell->hsm.a_srp_det = 1;
-			langwell->hsm.a_wait_vrise_tmout = 0;
-			langwell_otg_add_timer(a_wait_vrise_tmr);
-			langwell->otg.state = OTG_STATE_A_WAIT_VRISE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (!langwell->hsm.a_bus_drop &&
-			(langwell->hsm.a_srp_det || langwell->hsm.a_bus_req)) {
-			langwell_otg_drv_vbus(1);
-			langwell->hsm.a_wait_vrise_tmout = 0;
-			langwell_otg_add_timer(a_wait_vrise_tmr);
-			langwell->otg.state = OTG_STATE_A_WAIT_VRISE;
-			queue_work(langwell->qwork, &langwell->work);
-		}
-		break;
-	case OTG_STATE_A_WAIT_VRISE:
-		if (langwell->hsm.id) {
-			langwell_otg_del_timer(a_wait_vrise_tmr);
-			langwell->hsm.b_bus_req = 0;
-			langwell->otg.default_a = 0;
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_B_IDLE;
-		} else if (langwell->hsm.a_vbus_vld) {
-			langwell_otg_del_timer(a_wait_vrise_tmr);
-			if (langwell->host_ops)
-				langwell->host_ops->probe(langwell->pdev,
-						langwell->host_ops->id_table);
-			else
-				otg_dbg("host driver not loaded.\n");
-			langwell->hsm.b_conn = 0;
-			langwell->hsm.a_set_b_hnp_en = 0;
-			langwell->hsm.a_wait_bcon_tmout = 0;
-			langwell_otg_add_timer(a_wait_bcon_tmr);
-			langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-		} else if (langwell->hsm.a_wait_vrise_tmout) {
-			if (langwell->hsm.a_vbus_vld) {
-				if (langwell->host_ops)
-					langwell->host_ops->probe(
-						langwell->pdev,
-						langwell->host_ops->id_table);
-				else
-					otg_dbg("host driver not loaded.\n");
-				langwell->hsm.b_conn = 0;
-				langwell->hsm.a_set_b_hnp_en = 0;
-				langwell->hsm.a_wait_bcon_tmout = 0;
-				langwell_otg_add_timer(a_wait_bcon_tmr);
-				langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-			} else {
-				langwell_otg_drv_vbus(0);
-				langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-			}
-		}
-		break;
-	case OTG_STATE_A_WAIT_BCON:
-		if (langwell->hsm.id) {
-			langwell_otg_del_timer(a_wait_bcon_tmr);
-
-			langwell->otg.default_a = 0;
-			langwell->hsm.b_bus_req = 0;
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_B_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (!langwell->hsm.a_vbus_vld) {
-			langwell_otg_del_timer(a_wait_bcon_tmr);
-
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-		} else if (langwell->hsm.a_bus_drop ||
-				(langwell->hsm.a_wait_bcon_tmout &&
-				!langwell->hsm.a_bus_req)) {
-			langwell_otg_del_timer(a_wait_bcon_tmr);
-
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-		} else if (langwell->hsm.b_conn) {
-			langwell_otg_del_timer(a_wait_bcon_tmr);
-
-			langwell->hsm.a_suspend_req = 0;
-			langwell->otg.state = OTG_STATE_A_HOST;
-			if (!langwell->hsm.a_bus_req &&
-				langwell->hsm.a_set_b_hnp_en) {
-				/* It is not safe enough to do a fast
-				 * transistion from A_WAIT_BCON to
-				 * A_SUSPEND */
-				msleep(10000);
-				if (langwell->hsm.a_bus_req)
-					break;
-
-				if (request_irq(langwell->pdev->irq,
-					otg_dummy_irq, IRQF_SHARED,
-					driver_name, langwell->regs) != 0) {
-					otg_dbg("request interrupt %d fail\n",
-					langwell->pdev->irq);
-				}
-
-				langwell_otg_HABA(1);
-				langwell->hsm.b_bus_resume = 0;
-				langwell->hsm.a_aidl_bdis_tmout = 0;
-				langwell_otg_add_timer(a_aidl_bdis_tmr);
-
-				langwell_otg_loc_sof(0);
-				langwell->otg.state = OTG_STATE_A_SUSPEND;
-			} else if (!langwell->hsm.a_bus_req &&
-				!langwell->hsm.a_set_b_hnp_en) {
-				struct pci_dev *pdev = langwell->pdev;
-				if (langwell->host_ops)
-					langwell->host_ops->remove(pdev);
-				else
-					otg_dbg("host driver removed.\n");
-				langwell_otg_drv_vbus(0);
-				langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-			}
-		}
-		break;
-	case OTG_STATE_A_HOST:
-		if (langwell->hsm.id) {
-			langwell->otg.default_a = 0;
-			langwell->hsm.b_bus_req = 0;
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_B_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (langwell->hsm.a_bus_drop ||
-		(!langwell->hsm.a_set_b_hnp_en && !langwell->hsm.a_bus_req)) {
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-		} else if (!langwell->hsm.a_vbus_vld) {
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-		} else if (langwell->hsm.a_set_b_hnp_en
-				&& !langwell->hsm.a_bus_req) {
-			/* Set HABA to enable hardware assistance to signal
-			 *  A-connect after receiver B-disconnect. Hardware
-			 *  will then set client mode and enable URE, SLE and
-			 *  PCE after the assistance. otg_dummy_irq is used to
-			 *  clean these ints when client driver is not resumed.
-			 */
-			if (request_irq(langwell->pdev->irq,
-				otg_dummy_irq, IRQF_SHARED, driver_name,
-				langwell->regs) != 0) {
-				otg_dbg("request interrupt %d failed\n",
-						langwell->pdev->irq);
-			}
-
-			/* set HABA */
-			langwell_otg_HABA(1);
-			langwell->hsm.b_bus_resume = 0;
-			langwell->hsm.a_aidl_bdis_tmout = 0;
-			langwell_otg_add_timer(a_aidl_bdis_tmr);
-			langwell_otg_loc_sof(0);
-			langwell->otg.state = OTG_STATE_A_SUSPEND;
-		} else if (!langwell->hsm.b_conn || !langwell->hsm.a_bus_req) {
-			langwell->hsm.a_wait_bcon_tmout = 0;
-			langwell->hsm.a_set_b_hnp_en = 0;
-			langwell_otg_add_timer(a_wait_bcon_tmr);
-			langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-		}
-		break;
-	case OTG_STATE_A_SUSPEND:
-		if (langwell->hsm.id) {
-			langwell_otg_del_timer(a_aidl_bdis_tmr);
-			langwell_otg_HABA(0);
-			free_irq(langwell->pdev->irq, langwell->regs);
-			langwell->otg.default_a = 0;
-			langwell->hsm.b_bus_req = 0;
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_B_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (langwell->hsm.a_bus_req ||
-				langwell->hsm.b_bus_resume) {
-			langwell_otg_del_timer(a_aidl_bdis_tmr);
-			langwell_otg_HABA(0);
-			free_irq(langwell->pdev->irq, langwell->regs);
-			langwell->hsm.a_suspend_req = 0;
-			langwell_otg_loc_sof(1);
-			langwell->otg.state = OTG_STATE_A_HOST;
-		} else if (langwell->hsm.a_aidl_bdis_tmout ||
-				langwell->hsm.a_bus_drop) {
-			langwell_otg_del_timer(a_aidl_bdis_tmr);
-			langwell_otg_HABA(0);
-			free_irq(langwell->pdev->irq, langwell->regs);
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-		} else if (!langwell->hsm.b_conn &&
-				langwell->hsm.a_set_b_hnp_en) {
-			langwell_otg_del_timer(a_aidl_bdis_tmr);
-			langwell_otg_HABA(0);
-			free_irq(langwell->pdev->irq, langwell->regs);
-
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-
-			langwell->hsm.b_bus_suspend = 0;
-			langwell->hsm.b_bus_suspend_vld = 0;
-			langwell->hsm.b_bus_suspend_tmout = 0;
-
-			/* msleep(200); */
-			if (langwell->client_ops)
-				langwell->client_ops->resume(langwell->pdev);
-			else
-				otg_dbg("client driver not loaded.\n");
-
-			langwell_otg_add_timer(b_bus_suspend_tmr);
-			langwell->otg.state = OTG_STATE_A_PERIPHERAL;
-			break;
-		} else if (!langwell->hsm.a_vbus_vld) {
-			langwell_otg_del_timer(a_aidl_bdis_tmr);
-			langwell_otg_HABA(0);
-			free_irq(langwell->pdev->irq, langwell->regs);
-			if (langwell->host_ops)
-				langwell->host_ops->remove(langwell->pdev);
-			else
-				otg_dbg("host driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-		}
-		break;
-	case OTG_STATE_A_PERIPHERAL:
-		if (langwell->hsm.id) {
-			langwell_otg_del_timer(b_bus_suspend_tmr);
-			langwell->otg.default_a = 0;
-			langwell->hsm.b_bus_req = 0;
-			if (langwell->client_ops)
-				langwell->client_ops->suspend(langwell->pdev,
-					PMSG_FREEZE);
-			else
-				otg_dbg("client driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_B_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (!langwell->hsm.a_vbus_vld) {
-			langwell_otg_del_timer(b_bus_suspend_tmr);
-			if (langwell->client_ops)
-				langwell->client_ops->suspend(langwell->pdev,
-					PMSG_FREEZE);
-			else
-				otg_dbg("client driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_A_VBUS_ERR;
-		} else if (langwell->hsm.a_bus_drop) {
-			langwell_otg_del_timer(b_bus_suspend_tmr);
-			if (langwell->client_ops)
-				langwell->client_ops->suspend(langwell->pdev,
-					PMSG_FREEZE);
-			else
-				otg_dbg("client driver has been removed.\n");
-			langwell_otg_drv_vbus(0);
-			langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-		} else if (langwell->hsm.b_bus_suspend) {
-			langwell_otg_del_timer(b_bus_suspend_tmr);
-			if (langwell->client_ops)
-				langwell->client_ops->suspend(langwell->pdev,
-					PMSG_FREEZE);
-			else
-				otg_dbg("client driver has been removed.\n");
-
-			if (langwell->host_ops)
-				langwell->host_ops->probe(langwell->pdev,
-						langwell->host_ops->id_table);
-			else
-				otg_dbg("host driver not loaded.\n");
-			langwell->hsm.a_set_b_hnp_en = 0;
-			langwell->hsm.a_wait_bcon_tmout = 0;
-			langwell_otg_add_timer(a_wait_bcon_tmr);
-			langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-		} else if (langwell->hsm.b_bus_suspend_tmout) {
-			u32	val;
-			val = readl(langwell->regs + CI_PORTSC1);
-			if (!(val & PORTSC_SUSP))
-				break;
-			if (langwell->client_ops)
-				langwell->client_ops->suspend(langwell->pdev,
-						PMSG_FREEZE);
-			else
-				otg_dbg("client driver has been removed.\n");
-			if (langwell->host_ops)
-				langwell->host_ops->probe(langwell->pdev,
-						langwell->host_ops->id_table);
-			else
-				otg_dbg("host driver not loaded.\n");
-			langwell->hsm.a_set_b_hnp_en = 0;
-			langwell->hsm.a_wait_bcon_tmout = 0;
-			langwell_otg_add_timer(a_wait_bcon_tmr);
-			langwell->otg.state = OTG_STATE_A_WAIT_BCON;
-		}
-		break;
-	case OTG_STATE_A_VBUS_ERR:
-		if (langwell->hsm.id) {
-			langwell->otg.default_a = 0;
-			langwell->hsm.a_clr_err = 0;
-			langwell->hsm.a_srp_det = 0;
-			langwell->otg.state = OTG_STATE_B_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (langwell->hsm.a_clr_err) {
-			langwell->hsm.a_clr_err = 0;
-			langwell->hsm.a_srp_det = 0;
-			reset_otg();
-			init_hsm();
-			if (langwell->otg.state == OTG_STATE_A_IDLE)
-				queue_work(langwell->qwork, &langwell->work);
-		}
-		break;
-	case OTG_STATE_A_WAIT_VFALL:
-		if (langwell->hsm.id) {
-			langwell->otg.default_a = 0;
-			langwell->otg.state = OTG_STATE_B_IDLE;
-			queue_work(langwell->qwork, &langwell->work);
-		} else if (langwell->hsm.a_bus_req) {
-			langwell_otg_drv_vbus(1);
-			langwell->hsm.a_wait_vrise_tmout = 0;
-			langwell_otg_add_timer(a_wait_vrise_tmr);
-			langwell->otg.state = OTG_STATE_A_WAIT_VRISE;
-		} else if (!langwell->hsm.a_sess_vld) {
-			langwell->hsm.a_srp_det = 0;
-			langwell_otg_drv_vbus(0);
-			set_host_mode();
-			langwell->otg.state = OTG_STATE_A_IDLE;
-		}
-		break;
-	default:
-		;
-	}
-
-	otg_dbg("%s: new state = %s\n", __func__,
-			state_string(langwell->otg.state));
-}
-
-	static ssize_t
-show_registers(struct device *_dev, struct device_attribute *attr, char *buf)
-{
-	struct langwell_otg *langwell;
-	char *next;
-	unsigned size;
-	unsigned t;
-
-	langwell = the_transceiver;
-	next = buf;
-	size = PAGE_SIZE;
-
-	t = scnprintf(next, size,
-		"\n"
-		"USBCMD = 0x%08x \n"
-		"USBSTS = 0x%08x \n"
-		"USBINTR = 0x%08x \n"
-		"ASYNCLISTADDR = 0x%08x \n"
-		"PORTSC1 = 0x%08x \n"
-		"HOSTPC1 = 0x%08x \n"
-		"OTGSC = 0x%08x \n"
-		"USBMODE = 0x%08x \n",
-		readl(langwell->regs + 0x30),
-		readl(langwell->regs + 0x34),
-		readl(langwell->regs + 0x38),
-		readl(langwell->regs + 0x48),
-		readl(langwell->regs + 0x74),
-		readl(langwell->regs + 0xb4),
-		readl(langwell->regs + 0xf4),
-		readl(langwell->regs + 0xf8)
-		);
-	size -= t;
-	next += t;
-
-	return PAGE_SIZE - size;
-}
-static DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL);
-
-static ssize_t
-show_hsm(struct device *_dev, struct device_attribute *attr, char *buf)
-{
-	struct langwell_otg *langwell;
-	char *next;
-	unsigned size;
-	unsigned t;
-
-	langwell = the_transceiver;
-	next = buf;
-	size = PAGE_SIZE;
-
-	t = scnprintf(next, size,
-		"\n"
-		"current state = %s\n"
-		"a_bus_resume = \t%d\n"
-		"a_bus_suspend = \t%d\n"
-		"a_conn = \t%d\n"
-		"a_sess_vld = \t%d\n"
-		"a_srp_det = \t%d\n"
-		"a_vbus_vld = \t%d\n"
-		"b_bus_resume = \t%d\n"
-		"b_bus_suspend = \t%d\n"
-		"b_conn = \t%d\n"
-		"b_se0_srp = \t%d\n"
-		"b_sess_end = \t%d\n"
-		"b_sess_vld = \t%d\n"
-		"id = \t%d\n"
-		"a_set_b_hnp_en = \t%d\n"
-		"b_srp_done = \t%d\n"
-		"b_hnp_enable = \t%d\n"
-		"a_wait_vrise_tmout = \t%d\n"
-		"a_wait_bcon_tmout = \t%d\n"
-		"a_aidl_bdis_tmout = \t%d\n"
-		"b_ase0_brst_tmout = \t%d\n"
-		"a_bus_drop = \t%d\n"
-		"a_bus_req = \t%d\n"
-		"a_clr_err = \t%d\n"
-		"a_suspend_req = \t%d\n"
-		"b_bus_req = \t%d\n"
-		"b_bus_suspend_tmout = \t%d\n"
-		"b_bus_suspend_vld = \t%d\n",
-		state_string(langwell->otg.state),
-		langwell->hsm.a_bus_resume,
-		langwell->hsm.a_bus_suspend,
-		langwell->hsm.a_conn,
-		langwell->hsm.a_sess_vld,
-		langwell->hsm.a_srp_det,
-		langwell->hsm.a_vbus_vld,
-		langwell->hsm.b_bus_resume,
-		langwell->hsm.b_bus_suspend,
-		langwell->hsm.b_conn,
-		langwell->hsm.b_se0_srp,
-		langwell->hsm.b_sess_end,
-		langwell->hsm.b_sess_vld,
-		langwell->hsm.id,
-		langwell->hsm.a_set_b_hnp_en,
-		langwell->hsm.b_srp_done,
-		langwell->hsm.b_hnp_enable,
-		langwell->hsm.a_wait_vrise_tmout,
-		langwell->hsm.a_wait_bcon_tmout,
-		langwell->hsm.a_aidl_bdis_tmout,
-		langwell->hsm.b_ase0_brst_tmout,
-		langwell->hsm.a_bus_drop,
-		langwell->hsm.a_bus_req,
-		langwell->hsm.a_clr_err,
-		langwell->hsm.a_suspend_req,
-		langwell->hsm.b_bus_req,
-		langwell->hsm.b_bus_suspend_tmout,
-		langwell->hsm.b_bus_suspend_vld
-		);
-	size -= t;
-	next += t;
-
-	return PAGE_SIZE - size;
-}
-static DEVICE_ATTR(hsm, S_IRUGO, show_hsm, NULL);
-
-static ssize_t
-get_a_bus_req(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct langwell_otg *langwell;
-	char *next;
-	unsigned size;
-	unsigned t;
-
-	langwell =  the_transceiver;
-	next = buf;
-	size = PAGE_SIZE;
-
-	t = scnprintf(next, size, "%d", langwell->hsm.a_bus_req);
-	size -= t;
-	next += t;
-
-	return PAGE_SIZE - size;
-}
-
-static ssize_t
-set_a_bus_req(struct device *dev, struct device_attribute *attr,
-		const char *buf, size_t count)
-{
-	struct langwell_otg *langwell;
-	langwell = the_transceiver;
-	if (!langwell->otg.default_a)
-		return -1;
-	if (count > 2)
-		return -1;
-
-	if (buf[0] == '0') {
-		langwell->hsm.a_bus_req = 0;
-		otg_dbg("a_bus_req = 0\n");
-	} else if (buf[0] == '1') {
-		/* If a_bus_drop is TRUE, a_bus_req can't be set */
-		if (langwell->hsm.a_bus_drop)
-			return -1;
-		langwell->hsm.a_bus_req = 1;
-		otg_dbg("a_bus_req = 1\n");
-	}
-	if (spin_trylock(&langwell->wq_lock)) {
-		queue_work(langwell->qwork, &langwell->work);
-		spin_unlock(&langwell->wq_lock);
-	}
-	return count;
-}
-static DEVICE_ATTR(a_bus_req, S_IRUGO | S_IWUGO, get_a_bus_req, set_a_bus_req);
-
-static ssize_t
-get_a_bus_drop(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct langwell_otg *langwell;
-	char *next;
-	unsigned size;
-	unsigned t;
-
-	langwell =  the_transceiver;
-	next = buf;
-	size = PAGE_SIZE;
-
-	t = scnprintf(next, size, "%d", langwell->hsm.a_bus_drop);
-	size -= t;
-	next += t;
-
-	return PAGE_SIZE - size;
-}
-
-static ssize_t
-set_a_bus_drop(struct device *dev, struct device_attribute *attr,
-		const char *buf, size_t count)
-{
-	struct langwell_otg *langwell;
-	langwell = the_transceiver;
-	if (!langwell->otg.default_a)
-		return -1;
-	if (count > 2)
-		return -1;
-
-	if (buf[0] == '0') {
-		langwell->hsm.a_bus_drop = 0;
-		otg_dbg("a_bus_drop = 0\n");
-	} else if (buf[0] == '1') {
-		langwell->hsm.a_bus_drop = 1;
-		langwell->hsm.a_bus_req = 0;
-		otg_dbg("a_bus_drop = 1, then a_bus_req = 0\n");
-	}
-	if (spin_trylock(&langwell->wq_lock)) {
-		queue_work(langwell->qwork, &langwell->work);
-		spin_unlock(&langwell->wq_lock);
-	}
-	return count;
-}
-static DEVICE_ATTR(a_bus_drop, S_IRUGO | S_IWUGO,
-	get_a_bus_drop, set_a_bus_drop);
-
-static ssize_t
-get_b_bus_req(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct langwell_otg *langwell;
-	char *next;
-	unsigned size;
-	unsigned t;
-
-	langwell =  the_transceiver;
-	next = buf;
-	size = PAGE_SIZE;
-
-	t = scnprintf(next, size, "%d", langwell->hsm.b_bus_req);
-	size -= t;
-	next += t;
-
-	return PAGE_SIZE - size;
-}
-
-static ssize_t
-set_b_bus_req(struct device *dev, struct device_attribute *attr,
-		const char *buf, size_t count)
-{
-	struct langwell_otg *langwell;
-	langwell = the_transceiver;
-
-	if (langwell->otg.default_a)
-		return -1;
-
-	if (count > 2)
-		return -1;
-
-	if (buf[0] == '0') {
-		langwell->hsm.b_bus_req = 0;
-		otg_dbg("b_bus_req = 0\n");
-	} else if (buf[0] == '1') {
-		langwell->hsm.b_bus_req = 1;
-		otg_dbg("b_bus_req = 1\n");
-	}
-	if (spin_trylock(&langwell->wq_lock)) {
-		queue_work(langwell->qwork, &langwell->work);
-		spin_unlock(&langwell->wq_lock);
-	}
-	return count;
-}
-static DEVICE_ATTR(b_bus_req, S_IRUGO | S_IWUGO, get_b_bus_req, set_b_bus_req);
-
-static ssize_t
-set_a_clr_err(struct device *dev, struct device_attribute *attr,
-		const char *buf, size_t count)
-{
-	struct langwell_otg *langwell;
-	langwell = the_transceiver;
-
-	if (!langwell->otg.default_a)
-		return -1;
-	if (count > 2)
-		return -1;
-
-	if (buf[0] == '1') {
-		langwell->hsm.a_clr_err = 1;
-		otg_dbg("a_clr_err = 1\n");
-	}
-	if (spin_trylock(&langwell->wq_lock)) {
-		queue_work(langwell->qwork, &langwell->work);
-		spin_unlock(&langwell->wq_lock);
-	}
-	return count;
-}
-static DEVICE_ATTR(a_clr_err, S_IWUGO, NULL, set_a_clr_err);
-
-static struct attribute *inputs_attrs[] = {
-	&dev_attr_a_bus_req.attr,
-	&dev_attr_a_bus_drop.attr,
-	&dev_attr_b_bus_req.attr,
-	&dev_attr_a_clr_err.attr,
-	NULL,
-};
-
-static struct attribute_group debug_dev_attr_group = {
-	.name = "inputs",
-	.attrs = inputs_attrs,
-};
-
-int langwell_register_host(struct pci_driver *host_driver)
-{
-	int	ret = 0;
-
-	the_transceiver->host_ops = host_driver;
-	queue_work(the_transceiver->qwork, &the_transceiver->work);
-	otg_dbg("host controller driver is registered\n");
-
-	return ret;
-}
-EXPORT_SYMBOL(langwell_register_host);
-
-void langwell_unregister_host(struct pci_driver *host_driver)
-{
-	if (the_transceiver->host_ops)
-		the_transceiver->host_ops->remove(the_transceiver->pdev);
-	the_transceiver->host_ops = NULL;
-	the_transceiver->hsm.a_bus_drop = 1;
-	queue_work(the_transceiver->qwork, &the_transceiver->work);
-	otg_dbg("host controller driver is unregistered\n");
-}
-EXPORT_SYMBOL(langwell_unregister_host);
-
-int langwell_register_peripheral(struct pci_driver *client_driver)
-{
-	int	ret = 0;
-
-	if (client_driver)
-		ret = client_driver->probe(the_transceiver->pdev,
-				client_driver->id_table);
-	if (!ret) {
-		the_transceiver->client_ops = client_driver;
-		queue_work(the_transceiver->qwork, &the_transceiver->work);
-		otg_dbg("client controller driver is registered\n");
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL(langwell_register_peripheral);
-
-void langwell_unregister_peripheral(struct pci_driver *client_driver)
-{
-	if (the_transceiver->client_ops)
-		the_transceiver->client_ops->remove(the_transceiver->pdev);
-	the_transceiver->client_ops = NULL;
-	the_transceiver->hsm.b_bus_req = 0;
-	queue_work(the_transceiver->qwork, &the_transceiver->work);
-	otg_dbg("client controller driver is unregistered\n");
-}
-EXPORT_SYMBOL(langwell_unregister_peripheral);
-
-static int langwell_otg_probe(struct pci_dev *pdev,
-		const struct pci_device_id *id)
-{
-	unsigned long		resource, len;
-	void __iomem 		*base = NULL;
-	int			retval;
-	u32			val32;
-	struct langwell_otg	*langwell;
-	char			qname[] = "langwell_otg_queue";
-
-	retval = 0;
-	otg_dbg("\notg controller is detected.\n");
-	if (pci_enable_device(pdev) < 0) {
-		retval = -ENODEV;
-		goto done;
-	}
-
-	langwell = kzalloc(sizeof *langwell, GFP_KERNEL);
-	if (langwell == NULL) {
-		retval = -ENOMEM;
-		goto done;
-	}
-	the_transceiver = langwell;
-
-	/* control register: BAR 0 */
-	resource = pci_resource_start(pdev, 0);
-	len = pci_resource_len(pdev, 0);
-	if (!request_mem_region(resource, len, driver_name)) {
-		retval = -EBUSY;
-		goto err;
-	}
-	langwell->region = 1;
-
-	base = ioremap_nocache(resource, len);
-	if (base == NULL) {
-		retval = -EFAULT;
-		goto err;
-	}
-	langwell->regs = base;
-
-	if (!pdev->irq) {
-		otg_dbg("No IRQ.\n");
-		retval = -ENODEV;
-		goto err;
-	}
-
-	langwell->qwork = create_workqueue(qname);
-	if (!langwell->qwork) {
-		otg_dbg("cannot create workqueue %s\n", qname);
-		retval = -ENOMEM;
-		goto err;
-	}
-	INIT_WORK(&langwell->work, langwell_otg_work);
-
-	/* OTG common part */
-	langwell->pdev = pdev;
-	langwell->otg.dev = &pdev->dev;
-	langwell->otg.label = driver_name;
-	langwell->otg.set_host = langwell_otg_set_host;
-	langwell->otg.set_peripheral = langwell_otg_set_peripheral;
-	langwell->otg.set_power = langwell_otg_set_power;
-	langwell->otg.start_srp = langwell_otg_start_srp;
-	langwell->otg.state = OTG_STATE_UNDEFINED;
-	if (otg_set_transceiver(&langwell->otg)) {
-		otg_dbg("can't set transceiver\n");
-		retval = -EBUSY;
-		goto err;
-	}
-
-	reset_otg();
-	init_hsm();
-
-	spin_lock_init(&langwell->lock);
-	spin_lock_init(&langwell->wq_lock);
-	INIT_LIST_HEAD(&active_timers);
-	langwell_otg_init_timers(&langwell->hsm);
-
-	if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
-				driver_name, langwell) != 0) {
-		otg_dbg("request interrupt %d failed\n", pdev->irq);
-		retval = -EBUSY;
-		goto err;
-	}
-
-	/* enable OTGSC int */
-	val32 = OTGSC_DPIE | OTGSC_BSEIE | OTGSC_BSVIE |
-		OTGSC_ASVIE | OTGSC_AVVIE | OTGSC_IDIE | OTGSC_IDPU;
-	writel(val32, langwell->regs + CI_OTGSC);
-
-	retval = device_create_file(&pdev->dev, &dev_attr_registers);
-	if (retval < 0) {
-		otg_dbg("Can't register sysfs attribute: %d\n", retval);
-		goto err;
-	}
-
-	retval = device_create_file(&pdev->dev, &dev_attr_hsm);
-	if (retval < 0) {
-		otg_dbg("Can't hsm sysfs attribute: %d\n", retval);
-		goto err;
-	}
-
-	retval = sysfs_create_group(&pdev->dev.kobj, &debug_dev_attr_group);
-	if (retval < 0) {
-		otg_dbg("Can't register sysfs attr group: %d\n", retval);
-		goto err;
-	}
-
-	if (langwell->otg.state == OTG_STATE_A_IDLE)
-		queue_work(langwell->qwork, &langwell->work);
-
-	return 0;
-
-err:
-	if (the_transceiver)
-		langwell_otg_remove(pdev);
-done:
-	return retval;
-}
-
-static void langwell_otg_remove(struct pci_dev *pdev)
-{
-	struct langwell_otg *langwell;
-
-	langwell = the_transceiver;
-
-	if (langwell->qwork) {
-		flush_workqueue(langwell->qwork);
-		destroy_workqueue(langwell->qwork);
-	}
-	langwell_otg_free_timers();
-
-	/* disable OTGSC interrupt as OTGSC doesn't change in reset */
-	writel(0, langwell->regs + CI_OTGSC);
-
-	if (pdev->irq)
-		free_irq(pdev->irq, langwell);
-	if (langwell->regs)
-		iounmap(langwell->regs);
-	if (langwell->region)
-		release_mem_region(pci_resource_start(pdev, 0),
-				pci_resource_len(pdev, 0));
-
-	otg_set_transceiver(NULL);
-	pci_disable_device(pdev);
-	sysfs_remove_group(&pdev->dev.kobj, &debug_dev_attr_group);
-	device_remove_file(&pdev->dev, &dev_attr_hsm);
-	device_remove_file(&pdev->dev, &dev_attr_registers);
-	kfree(langwell);
-	langwell = NULL;
-}
-
-static void transceiver_suspend(struct pci_dev *pdev)
-{
-	pci_save_state(pdev);
-	pci_set_power_state(pdev, PCI_D3hot);
-	langwell_otg_phy_low_power(1);
-}
-
-static int langwell_otg_suspend(struct pci_dev *pdev, pm_message_t message)
-{
-	int 	ret = 0;
-	struct langwell_otg *langwell;
-
-	langwell = the_transceiver;
-
-	/* Disbale OTG interrupts */
-	langwell_otg_intr(0);
-
-	if (pdev->irq)
-		free_irq(pdev->irq, langwell);
-
-	/* Prevent more otg_work */
-	flush_workqueue(langwell->qwork);
-	spin_lock(&langwell->wq_lock);
-
-	/* start actions */
-	switch (langwell->otg.state) {
-	case OTG_STATE_A_IDLE:
-	case OTG_STATE_B_IDLE:
-	case OTG_STATE_A_WAIT_VFALL:
-	case OTG_STATE_A_VBUS_ERR:
-		transceiver_suspend(pdev);
-		break;
-	case OTG_STATE_A_WAIT_VRISE:
-		langwell_otg_del_timer(a_wait_vrise_tmr);
-		langwell->hsm.a_srp_det = 0;
-		langwell_otg_drv_vbus(0);
-		langwell->otg.state = OTG_STATE_A_IDLE;
-		transceiver_suspend(pdev);
-		break;
-	case OTG_STATE_A_WAIT_BCON:
-		langwell_otg_del_timer(a_wait_bcon_tmr);
-		if (langwell->host_ops)
-			ret = langwell->host_ops->suspend(pdev, message);
-		langwell_otg_drv_vbus(0);
-		break;
-	case OTG_STATE_A_HOST:
-		if (langwell->host_ops)
-			ret = langwell->host_ops->suspend(pdev, message);
-		langwell_otg_drv_vbus(0);
-		langwell_otg_phy_low_power(1);
-		break;
-	case OTG_STATE_A_SUSPEND:
-		langwell_otg_del_timer(a_aidl_bdis_tmr);
-		langwell_otg_HABA(0);
-		if (langwell->host_ops)
-			langwell->host_ops->remove(pdev);
-		else
-			otg_dbg("host driver has been removed.\n");
-		langwell_otg_drv_vbus(0);
-		transceiver_suspend(pdev);
-		langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-		break;
-	case OTG_STATE_A_PERIPHERAL:
-		if (langwell->client_ops)
-			ret = langwell->client_ops->suspend(pdev, message);
-		else
-			otg_dbg("client driver has been removed.\n");
-		langwell_otg_drv_vbus(0);
-		transceiver_suspend(pdev);
-		langwell->otg.state = OTG_STATE_A_WAIT_VFALL;
-		break;
-	case OTG_STATE_B_HOST:
-		if (langwell->host_ops)
-			langwell->host_ops->remove(pdev);
-		else
-			otg_dbg("host driver has been removed.\n");
-		langwell->hsm.b_bus_req = 0;
-		transceiver_suspend(pdev);
-		langwell->otg.state = OTG_STATE_B_IDLE;
-		break;
-	case OTG_STATE_B_PERIPHERAL:
-		if (langwell->client_ops)
-			ret = langwell->client_ops->suspend(pdev, message);
-		else
-			otg_dbg("client driver has been removed.\n");
-		break;
-	case OTG_STATE_B_WAIT_ACON:
-		langwell_otg_del_timer(b_ase0_brst_tmr);
-		langwell_otg_HAAR(0);
-		if (langwell->host_ops)
-			langwell->host_ops->remove(pdev);
-		else
-			otg_dbg("host driver has been removed.\n");
-		langwell->hsm.b_bus_req = 0;
-		langwell->otg.state = OTG_STATE_B_IDLE;
-		transceiver_suspend(pdev);
-		break;
-	default:
-		otg_dbg("error state before suspend\n ");
-		break;
-	}
-	spin_unlock(&langwell->wq_lock);
-
-	return ret;
-}
-
-static void transceiver_resume(struct pci_dev *pdev)
-{
-	pci_restore_state(pdev);
-	pci_set_power_state(pdev, PCI_D0);
-	langwell_otg_phy_low_power(0);
-}
-
-static int langwell_otg_resume(struct pci_dev *pdev)
-{
-	int 	ret = 0;
-	struct langwell_otg *langwell;
-
-	langwell = the_transceiver;
-
-	spin_lock(&langwell->wq_lock);
-
-	switch (langwell->otg.state) {
-	case OTG_STATE_A_IDLE:
-	case OTG_STATE_B_IDLE:
-	case OTG_STATE_A_WAIT_VFALL:
-	case OTG_STATE_A_VBUS_ERR:
-		transceiver_resume(pdev);
-		break;
-	case OTG_STATE_A_WAIT_BCON:
-		langwell_otg_add_timer(a_wait_bcon_tmr);
-		langwell_otg_drv_vbus(1);
-		if (langwell->host_ops)
-			ret = langwell->host_ops->resume(pdev);
-		break;
-	case OTG_STATE_A_HOST:
-		langwell_otg_drv_vbus(1);
-		langwell_otg_phy_low_power(0);
-		if (langwell->host_ops)
-			ret = langwell->host_ops->resume(pdev);
-		break;
-	case OTG_STATE_B_PERIPHERAL:
-		if (langwell->client_ops)
-			ret = langwell->client_ops->resume(pdev);
-		else
-			otg_dbg("client driver not loaded.\n");
-		break;
-	default:
-		otg_dbg("error state before suspend\n ");
-		break;
-	}
-
-	if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
-				driver_name, the_transceiver) != 0) {
-		otg_dbg("request interrupt %d failed\n", pdev->irq);
-		ret = -EBUSY;
-	}
-
-	/* enable OTG interrupts */
-	langwell_otg_intr(1);
-
-	spin_unlock(&langwell->wq_lock);
-
-	queue_work(langwell->qwork, &langwell->work);
-
-
-	return ret;
-}
-
-static int __init langwell_otg_init(void)
-{
-	return pci_register_driver(&otg_pci_driver);
-}
-module_init(langwell_otg_init);
-
-static void __exit langwell_otg_cleanup(void)
-{
-	pci_unregister_driver(&otg_pci_driver);
-}
-module_exit(langwell_otg_cleanup);
diff --git a/drivers/usb/otg/nop-usb-xceiv.c b/drivers/usb/otg/nop-usb-xceiv.c
index 9ed5ea568679..af456b48985f 100644
--- a/drivers/usb/otg/nop-usb-xceiv.c
+++ b/drivers/usb/otg/nop-usb-xceiv.c
@@ -53,6 +53,7 @@ EXPORT_SYMBOL(usb_nop_xceiv_register);
 void usb_nop_xceiv_unregister(void)
 {
 	platform_device_unregister(pd);
+	pd = NULL;
 }
 EXPORT_SYMBOL(usb_nop_xceiv_unregister);
 
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
index 247b61bfb7f4..0e4f2e41ace5 100644
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -169,9 +169,11 @@ static int usb_console_setup(struct console *co, char *options)
 			kfree(tty);
 		}
 	}
-	/* So we know not to kill the hardware on a hangup on this
-	   port. We have also bumped the use count by one so it won't go
-	   idle */
+	/* Now that any required fake tty operations are completed restore
+	 * the tty port count */
+	--port->port.count;
+	/* The console is special in terms of closing the device so
+	 * indicate this port is now acting as a system console. */
 	port->console = 1;
 	retval = 0;
 
@@ -204,7 +206,7 @@ static void usb_console_write(struct console *co,
 
 	dbg("%s - port %d, %d byte(s)", __func__, port->number, count);
 
-	if (!port->port.count) {
+	if (!port->console) {
 		dbg("%s - port not opened", __func__);
 		return;
 	}
@@ -300,8 +302,7 @@ void usb_serial_console_exit(void)
 {
 	if (usbcons_info.port) {
 		unregister_console(&usbcons);
-		if (usbcons_info.port->port.count)
-			usbcons_info.port->port.count--;
+		usbcons_info.port->console = 0;
 		usbcons_info.port = NULL;
 	}
 }
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 2b9eeda62bfe..985cbcf48bda 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -67,6 +67,8 @@ static struct usb_device_id id_table [] = {
 	{ USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */
 	{ USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */
 	{ USB_DEVICE(0x10C4, 0x0F91) }, /* Vstabi */
+	{ USB_DEVICE(0x10C4, 0x1101) }, /* Arkham Technology DS101 Bus Monitor */
+	{ USB_DEVICE(0x10C4, 0x1601) }, /* Arkham Technology DS101 Adapter */
 	{ USB_DEVICE(0x10C4, 0x800A) }, /* SPORTident BSM7-D-USB main station */
 	{ USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */
 	{ USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */
@@ -78,6 +80,7 @@ static struct usb_device_id id_table [] = {
 	{ USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */
 	{ USB_DEVICE(0x10C4, 0x8115) }, /* Arygon NFC/Mifare Reader */
 	{ USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */
+	{ USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */
 	{ USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */
 	{ USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */
 	{ USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */
@@ -94,7 +97,9 @@ static struct usb_device_id id_table [] = {
 	{ USB_DEVICE(0x10c4, 0x8293) }, /* Telegesys ETRX2USB */
 	{ USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */
 	{ USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */
+	{ USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */
 	{ USB_DEVICE(0x10C4, 0x83A8) }, /* Amber Wireless AMB2560 */
+	{ USB_DEVICE(0x10C4, 0x8411) }, /* Kyocera GPS Module */
 	{ USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
 	{ USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
 	{ USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index 9734085fd2fe..59adfe123110 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -1228,8 +1228,8 @@ static void cypress_read_int_callback(struct urb *urb)
 		/* precursor to disconnect so just go away */
 		return;
 	case -EPIPE:
-		usb_clear_halt(port->serial->dev, 0x81);
-		break;
+		/* Can't call usb_clear_halt while in_interrupt */
+		/* FALLS THROUGH */
 	default:
 		/* something ugly is going on... */
 		dev_err(&urb->dev->dev,
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 3dc3768ca71c..8fec5d4455c9 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -33,6 +33,7 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
@@ -107,6 +108,7 @@ struct ftdi_sio_quirk {
 
 static int   ftdi_jtag_probe(struct usb_serial *serial);
 static int   ftdi_mtxorb_hack_setup(struct usb_serial *serial);
+static int   ftdi_NDI_device_setup(struct usb_serial *serial);
 static void  ftdi_USB_UIRT_setup(struct ftdi_private *priv);
 static void  ftdi_HE_TIRA1_setup(struct ftdi_private *priv);
 
@@ -118,6 +120,10 @@ static struct ftdi_sio_quirk ftdi_mtxorb_hack_quirk = {
 	.probe  = ftdi_mtxorb_hack_setup,
 };
 
+static struct ftdi_sio_quirk ftdi_NDI_device_quirk = {
+	.probe	= ftdi_NDI_device_setup,
+};
+
 static struct ftdi_sio_quirk ftdi_USB_UIRT_quirk = {
 	.port_probe = ftdi_USB_UIRT_setup,
 };
@@ -191,6 +197,7 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_4_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_5_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_MTXORB_6_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_R2000KU_TRUE_RNG) },
 	{ USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0100_PID) },
 	{ USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0101_PID) },
 	{ USB_DEVICE(MTXORB_VID, MTXORB_FTDI_RANGE_0102_PID) },
@@ -579,6 +586,9 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_CCSICDU20_0_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_CCSICDU40_1_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_CCSMACHX_2_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_CCSLOAD_N_GO_3_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_CCSICDU64_4_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_CCSPRIME8_5_PID) },
 	{ USB_DEVICE(FTDI_VID, INSIDE_ACCESSO) },
 	{ USB_DEVICE(INTREPID_VID, INTREPID_VALUECAN_PID) },
 	{ USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
@@ -644,6 +654,16 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
 	{ USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
+	{ USB_DEVICE(FTDI_VID, FTDI_NDI_SPECTRA_SCU_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
+	{ USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_2_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
+	{ USB_DEVICE(FTDI_VID, FTDI_NDI_FUTURE_3_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk },
+	{ 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(FTDI_VID, FTDI_MAXSTREAM_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) },
@@ -660,6 +680,8 @@ static struct usb_device_id id_table_combined [] = {
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(FTDI_VID, LMI_LM3S_EVAL_BOARD_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+	{ USB_DEVICE(FTDI_VID, FTDI_TURTELIZER_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) },
 	{ USB_DEVICE(FTDI_VID, FTDI_REU_TINY_PID) },
 	{ USB_DEVICE(PAPOUCH_VID, PAPOUCH_QUIDO4x4_PID) },
@@ -667,7 +689,6 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_DOMINTELL_DUSB_PID) },
 	{ USB_DEVICE(ALTI2_VID, ALTI2_N3_PID) },
 	{ USB_DEVICE(FTDI_VID, DIEBOLD_BCS_SE923_PID) },
-	{ USB_DEVICE(FTDI_VID, FTDI_NDI_HUC_PID) },
 	{ USB_DEVICE(ATMEL_VID, STK541_PID) },
 	{ USB_DEVICE(DE_VID, STB_PID) },
 	{ USB_DEVICE(DE_VID, WHT_PID) },
@@ -677,6 +698,10 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(LARSENBRUSGAARD_VID, LB_ALTITRACK_PID) },
+	{ USB_DEVICE(GN_OTOMETRICS_VID, AURICAL_USB_PID) },
+	{ USB_DEVICE(BAYER_VID, BAYER_CONTOUR_CABLE_PID) },
+	{ USB_DEVICE(FTDI_VID, MARVELL_OPENRD_PID),
+		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };
@@ -1023,6 +1048,16 @@ static __u32 get_ftdi_divisor(struct tty_struct *tty,
 	case FT2232C: /* FT2232C chip */
 	case FT232RL:
 		if (baud <= 3000000) {
+			__u16 product_id = le16_to_cpu(
+				port->serial->dev->descriptor.idProduct);
+			if (((FTDI_NDI_HUC_PID == product_id) ||
+			     (FTDI_NDI_SPECTRA_SCU_PID == product_id) ||
+			     (FTDI_NDI_FUTURE_2_PID == product_id) ||
+			     (FTDI_NDI_FUTURE_3_PID == product_id) ||
+			     (FTDI_NDI_AURORA_SCU_PID == product_id)) &&
+			    (baud == 19200)) {
+				baud = 1200000;
+			}
 			div_value = ftdi_232bm_baud_to_divisor(baud);
 		} else {
 			dbg("%s - Baud rate too high!", __func__);
@@ -1554,6 +1589,39 @@ static void ftdi_HE_TIRA1_setup(struct ftdi_private *priv)
 } /* ftdi_HE_TIRA1_setup */
 
 /*
+ * Module parameter to control latency timer for NDI FTDI-based USB devices.
+ * If this value is not set in modprobe.conf.local its value will be set to 1ms.
+ */
+static int ndi_latency_timer = 1;
+
+/* Setup for the NDI FTDI-based USB devices, which requires hardwired
+ * baudrate (19200 gets mapped to 1200000).
+ *
+ * Called from usbserial:serial_probe.
+ */
+static int ftdi_NDI_device_setup(struct usb_serial *serial)
+{
+	struct usb_device *udev = serial->dev;
+	int latency = ndi_latency_timer;
+	int rv = 0;
+	char buf[1];
+
+	if (latency == 0)
+		latency = 1;
+	if (latency > 99)
+		latency = 99;
+
+	dbg("%s setting NDI device latency to %d", __func__, latency);
+	dev_info(&udev->dev, "NDI device with a latency value of %d", latency);
+
+	rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+				FTDI_SIO_SET_LATENCY_TIMER_REQUEST,
+				FTDI_SIO_SET_LATENCY_TIMER_REQUEST_TYPE,
+				latency, 0, buf, 0, WDR_TIMEOUT);
+	return 0;
+}
+
+/*
  * First port on JTAG adaptors such as Olimex arm-usb-ocd or the FIC/OpenMoko
  * Neo1973 Debug Board is reserved for JTAG interface and can be accessed from
  * userspace using openocd.
@@ -2121,7 +2189,7 @@ static void ftdi_process_read(struct work_struct *work)
 				/* Note that the error flag is duplicated for
 				   every character received since we don't know
 				   which character it applied to */
-				if (!usb_serial_handle_sysrq_char(port,
+				if (!usb_serial_handle_sysrq_char(tty, port,
 						data[packet_offset + i]))
 					tty_insert_flip_char(tty,
 						data[packet_offset + i],
@@ -2622,3 +2690,5 @@ MODULE_PARM_DESC(vendor, "User specified vendor ID (default="
 module_param(product, ushort, 0);
 MODULE_PARM_DESC(product, "User specified product ID");
 
+module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override");
diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index f1d440a728a3..8c92b88166ae 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -506,6 +506,7 @@
  *
  * Armin Laeuger originally sent the PID for the UM 100 module.
  */
+#define FTDI_R2000KU_TRUE_RNG	0xFB80  /* R2000KU TRUE RNG */
 #define FTDI_ELV_UR100_PID	0xFB58	/* USB-RS232-Umsetzer (UR 100) */
 #define FTDI_ELV_UM100_PID	0xFB5A	/* USB-Modul UM 100 */
 #define FTDI_ELV_UO100_PID	0xFB5B	/* USB-Modul UO 100 */
@@ -614,6 +615,9 @@
 #define FTDI_CCSICDU20_0_PID    0xF9D0
 #define FTDI_CCSICDU40_1_PID    0xF9D1
 #define FTDI_CCSMACHX_2_PID     0xF9D2
+#define FTDI_CCSLOAD_N_GO_3_PID 0xF9D3
+#define FTDI_CCSICDU64_4_PID    0xF9D4
+#define FTDI_CCSPRIME8_5_PID    0xF9D5
 
 /* Inside Accesso contactless reader (http://www.insidefr.com) */
 #define INSIDE_ACCESSO		0xFAD0
@@ -736,6 +740,15 @@
 #define FTDI_PYRAMID_PID	0xE6C8	/* Pyramid Appliance Display */
 
 /*
+ * NDI (www.ndigital.com) product ids
+ */
+#define FTDI_NDI_HUC_PID		0xDA70	/* NDI Host USB Converter */
+#define FTDI_NDI_SPECTRA_SCU_PID	0xDA71	/* NDI Spectra SCU */
+#define FTDI_NDI_FUTURE_2_PID		0xDA72	/* NDI future device #2 */
+#define FTDI_NDI_FUTURE_3_PID		0xDA73	/* NDI future device #3 */
+#define FTDI_NDI_AURORA_SCU_PID		0xDA74	/* NDI Aurora SCU */
+
+/*
  * Posiflex inc retail equipment (http://www.posiflex.com.tw)
  */
 #define POSIFLEX_VID		0x0d3a  /* Vendor ID */
@@ -848,9 +861,6 @@
 #define TML_VID			0x1B91	/* Vendor ID */
 #define TML_USB_SERIAL_PID	0x0064	/* USB - Serial Converter */
 
-/* NDI Polaris System */
-#define FTDI_NDI_HUC_PID        0xDA70
-
 /* Propox devices */
 #define FTDI_PROPOX_JTAGCABLEII_PID	0xD738
 
@@ -934,6 +944,29 @@
 #define MARVELL_VID		0x9e88
 #define MARVELL_SHEEVAPLUG_PID	0x9e8f
 
+#define FTDI_TURTELIZER_PID	0xBDC8 /* JTAG/RS-232 adapter by egnite GmBH */
+
+/*
+ * GN Otometrics (http://www.otometrics.com)
+ * Submitted by Ville Sundberg.
+ */
+#define GN_OTOMETRICS_VID	0x0c33	/* Vendor ID */
+#define AURICAL_USB_PID		0x0010	/* Aurical USB Audiometer */
+
+/*
+ * Bayer Ascensia Contour blood glucose meter USB-converter cable.
+ * http://winglucofacts.com/cables/
+ */
+#define BAYER_VID                      0x1A79
+#define BAYER_CONTOUR_CABLE_PID        0x6001
+
+/*
+ * Marvell OpenRD Base, Client
+ * http://www.open-rd.org
+ * OpenRD Base, Client use VID 0x0403
+ */
+#define MARVELL_OPENRD_PID	0x9e90
+
 /*
  *   BmRequestType:  1100 0000b
  *   bRequest:       FTDI_E2_READ
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 932d6241b787..ce57f6a32bdf 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -424,10 +424,17 @@ static void flush_and_resubmit_read_urb(struct usb_serial_port *port)
 	if (!tty)
 		goto done;
 
-	/* Push data to tty */
-	for (i = 0; i < urb->actual_length; i++, ch++) {
-		if (!usb_serial_handle_sysrq_char(port, *ch))
-			tty_insert_flip_char(tty, *ch, TTY_NORMAL);
+	/* The per character mucking around with sysrq path it too slow for
+	   stuff like 3G modems, so shortcircuit it in the 99.9999999% of cases
+	   where the USB serial is not a console anyway */
+	if (!port->console || !port->sysrq)
+		tty_insert_flip_string(tty, ch, urb->actual_length);
+	else {
+		/* Push data to tty */
+		for (i = 0; i < urb->actual_length; i++, ch++) {
+			if (!usb_serial_handle_sysrq_char(tty, port, *ch))
+				tty_insert_flip_char(tty, *ch, TTY_NORMAL);
+		}
 	}
 	tty_flip_buffer_push(tty);
 	tty_kref_put(tty);
@@ -527,11 +534,12 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty)
 	}
 }
 
-int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch)
+int usb_serial_handle_sysrq_char(struct tty_struct *tty,
+			struct usb_serial_port *port, unsigned int ch)
 {
 	if (port->sysrq && port->console) {
 		if (ch && time_before(jiffies, port->sysrq)) {
-			handle_sysrq(ch, tty_port_tty_get(&port->port));
+			handle_sysrq(ch, tty);
 			port->sysrq = 0;
 			return 1;
 		}
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index bfc5ce000ef9..ccd4dd340d2c 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -521,7 +521,7 @@ static int mos7720_chars_in_buffer(struct tty_struct *tty)
 	mos7720_port = usb_get_serial_port_data(port);
 	if (mos7720_port == NULL) {
 		dbg("%s:leaving ...........", __func__);
-		return -ENODEV;
+		return 0;
 	}
 
 	for (i = 0; i < NUM_URBS; ++i) {
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index c40f95c1951c..270009afdf77 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -26,6 +26,7 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
@@ -123,10 +124,13 @@
 #define BANDB_DEVICE_ID_USOPTL4_4       0xAC44
 #define BANDB_DEVICE_ID_USOPTL4_2       0xAC42
 
-/* This driver also supports the ATEN UC2324 device since it is mos7840 based
- *  - if I knew the device id it would also support the ATEN UC2322 */
+/* This driver also supports
+ * ATEN UC2324 device using Moschip MCS7840
+ * ATEN UC2322 device using Moschip MCS7820
+ */
 #define USB_VENDOR_ID_ATENINTL		0x0557
 #define ATENINTL_DEVICE_ID_UC2324	0x2011
+#define ATENINTL_DEVICE_ID_UC2322	0x7820
 
 /* Interrupt Routine Defines    */
 
@@ -176,6 +180,7 @@ static struct usb_device_id moschip_port_id_table[] = {
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)},
 	{USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)},
+	{USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)},
 	{}			/* terminating entry */
 };
 
@@ -185,6 +190,7 @@ static __devinitdata struct usb_device_id moschip_id_table_combined[] = {
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
 	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)},
 	{USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)},
+	{USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)},
 	{}			/* terminating entry */
 };
 
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 575816e6ba37..c784ddbe7b61 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -66,8 +66,10 @@ static int  option_tiocmget(struct tty_struct *tty, struct file *file);
 static int  option_tiocmset(struct tty_struct *tty, struct file *file,
 				unsigned int set, unsigned int clear);
 static int  option_send_setup(struct usb_serial_port *port);
+#ifdef CONFIG_PM
 static int  option_suspend(struct usb_serial *serial, pm_message_t message);
 static int  option_resume(struct usb_serial *serial);
+#endif
 
 /* Vendor and product IDs */
 #define OPTION_VENDOR_ID			0x0AF0
@@ -205,7 +207,9 @@ static int  option_resume(struct usb_serial *serial);
 #define NOVATELWIRELESS_PRODUCT_MC727		0x4100
 #define NOVATELWIRELESS_PRODUCT_MC950D		0x4400
 #define NOVATELWIRELESS_PRODUCT_U727		0x5010
+#define NOVATELWIRELESS_PRODUCT_MC727_NEW	0x5100
 #define NOVATELWIRELESS_PRODUCT_MC760		0x6000
+#define NOVATELWIRELESS_PRODUCT_OVMC760		0x6002
 
 /* FUTURE NOVATEL PRODUCTS */
 #define NOVATELWIRELESS_PRODUCT_EVDO_HIGHSPEED	0X6001
@@ -258,11 +262,6 @@ static int  option_resume(struct usb_serial *serial);
 #define AXESSTEL_VENDOR_ID			0x1726
 #define AXESSTEL_PRODUCT_MV110H			0x1000
 
-#define ONDA_VENDOR_ID				0x19d2
-#define ONDA_PRODUCT_MSA501HS			0x0001
-#define ONDA_PRODUCT_ET502HS			0x0002
-#define ONDA_PRODUCT_MT503HS			0x2000
-
 #define BANDRICH_VENDOR_ID			0x1A8D
 #define BANDRICH_PRODUCT_C100_1			0x1002
 #define BANDRICH_PRODUCT_C100_2			0x1003
@@ -300,6 +299,7 @@ static int  option_resume(struct usb_serial *serial);
 #define ZTE_PRODUCT_MF628			0x0015
 #define ZTE_PRODUCT_MF626			0x0031
 #define ZTE_PRODUCT_CDMA_TECH			0xfffe
+#define ZTE_PRODUCT_AC8710			0xfff1
 
 #define BENQ_VENDOR_ID				0x04a5
 #define BENQ_PRODUCT_H10			0x4068
@@ -307,11 +307,25 @@ static int  option_resume(struct usb_serial *serial);
 #define DLINK_VENDOR_ID				0x1186
 #define DLINK_PRODUCT_DWM_652			0x3e04
 
+#define QISDA_VENDOR_ID				0x1da5
+#define QISDA_PRODUCT_H21_4512			0x4512
+#define QISDA_PRODUCT_H21_4523			0x4523
+#define QISDA_PRODUCT_H20_4515			0x4515
+#define QISDA_PRODUCT_H20_4519			0x4519
+
 
 /* TOSHIBA PRODUCTS */
 #define TOSHIBA_VENDOR_ID			0x0930
 #define TOSHIBA_PRODUCT_HSDPA_MINICARD		0x1302
 
+#define ALINK_VENDOR_ID				0x1e0e
+#define ALINK_PRODUCT_3GU			0x9200
+
+/* ALCATEL PRODUCTS */
+#define ALCATEL_VENDOR_ID			0x1bbb
+#define ALCATEL_PRODUCT_X060S			0x0000
+
+
 static struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
@@ -428,8 +442,10 @@ static struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EU870D) }, /* Novatel EU850D/EU860D/EU870D */
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC950D) }, /* Novatel MC930D/MC950D */
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC727) }, /* Novatel MC727/U727/USB727 */
+	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC727_NEW) }, /* Novatel MC727/U727/USB727 refresh */
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_U727) }, /* Novatel MC727/U727/USB727 */
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_MC760) }, /* Novatel MC760/U760/USB760 */
+	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_OVMC760) }, /* Novatel Ovation MC760 */
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_FULLSPEED) }, /* Novatel HSPA product */
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_EVDO_EMBEDDED_FULLSPEED) }, /* Novatel EVDO Embedded product */
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, NOVATELWIRELESS_PRODUCT_HSPA_EMBEDDED_FULLSPEED) }, /* Novatel HSPA Embedded product */
@@ -463,42 +479,6 @@ static struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) },
 	{ USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_620UW) },
 	{ USB_DEVICE(AXESSTEL_VENDOR_ID, AXESSTEL_PRODUCT_MV110H) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_MSA501HS) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_ET502HS) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0003) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0004) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0005) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0006) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0007) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0008) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0009) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000a) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000b) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000c) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000d) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000e) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x000f) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0010) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0011) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0012) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0013) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0014) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0015) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0016) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0017) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0018) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0019) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0020) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0021) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0022) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0023) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0024) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0025) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0026) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0027) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0028) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, 0x0029) },
-	{ USB_DEVICE(ONDA_VENDOR_ID, ONDA_PRODUCT_MT503HS) },
 	{ USB_DEVICE(YISO_VENDOR_ID, YISO_PRODUCT_U893) },
 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) },
 	{ USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) },
@@ -523,14 +503,85 @@ static struct usb_device_id option_ids[] = {
 	{ USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */
 	{ USB_DEVICE(MAXON_VENDOR_ID, 0x6280) }, /* BP3-USB & BP3-EXT HSDPA */
 	{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_UC864E) },
-	{ USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622) },
-	{ USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626) },
-	{ USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_MF628) },
-	{ USB_DEVICE(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0002, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0003, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0004, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0005, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0006, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0007, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0008, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0009, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x000a, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x000b, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x000c, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x000d, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x000e, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x000f, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0010, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0011, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0012, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0013, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF628, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0016, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0017, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0018, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0019, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0020, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0021, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0022, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0023, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0024, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0025, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0026, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0028, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0029, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0030, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF626, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0032, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0033, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0037, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0039, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0042, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0043, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0048, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0049, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0051, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0052, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0054, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0055, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0057, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0058, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0061, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0062, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0063, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0064, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0066, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0069, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0076, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0078, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0082, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0086, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2002, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2003, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0014, 0xff, 0xff, 0xff) }, /* ZTE CDMA products */
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0027, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0059, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0060, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0070, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0073, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710, 0xff, 0xff, 0xff) },
 	{ USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_H10) },
 	{ USB_DEVICE(DLINK_VENDOR_ID, DLINK_PRODUCT_DWM_652) },
-	{ USB_DEVICE(0x1da5, 0x4515) }, /* BenQ H20 */
+	{ 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_4519) },
 	{ USB_DEVICE(TOSHIBA_VENDOR_ID, TOSHIBA_PRODUCT_HSDPA_MINICARD ) }, /* Toshiba 3G HSDPA == Novatel Expedite EU870D MiniCard */
+	{ USB_DEVICE(ALINK_VENDOR_ID, 0x9000) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(ALINK_VENDOR_ID, ALINK_PRODUCT_3GU, 0xff, 0xff, 0xff) },
+	{ USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X060S) },
 	{ } /* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, option_ids);
@@ -539,8 +590,10 @@ static struct usb_driver option_driver = {
 	.name       = "option",
 	.probe      = usb_serial_probe,
 	.disconnect = usb_serial_disconnect,
+#ifdef CONFIG_PM
 	.suspend    = usb_serial_suspend,
 	.resume     = usb_serial_resume,
+#endif
 	.id_table   = option_ids,
 	.no_dynamic_id = 	1,
 };
@@ -572,8 +625,10 @@ static struct usb_serial_driver option_1port_device = {
 	.disconnect        = option_disconnect,
 	.release           = option_release,
 	.read_int_callback = option_instat_callback,
+#ifdef CONFIG_PM
 	.suspend           = option_suspend,
 	.resume            = option_resume,
+#endif
 };
 
 static int debug;
@@ -732,7 +787,6 @@ static int option_write(struct tty_struct *tty, struct usb_serial_port *port,
 		memcpy(this_urb->transfer_buffer, buf, todo);
 		this_urb->transfer_buffer_length = todo;
 
-		this_urb->dev = port->serial->dev;
 		err = usb_submit_urb(this_urb, GFP_ATOMIC);
 		if (err) {
 			dbg("usb_submit_urb %p (write bulk) failed "
@@ -816,7 +870,6 @@ static void option_instat_callback(struct urb *urb)
 	int status = urb->status;
 	struct usb_serial_port *port =  urb->context;
 	struct option_port_private *portdata = usb_get_serial_port_data(port);
-	struct usb_serial *serial = port->serial;
 
 	dbg("%s", __func__);
 	dbg("%s: urb %p port %p has data %p", __func__, urb, port, portdata);
@@ -860,7 +913,6 @@ static void option_instat_callback(struct urb *urb)
 
 	/* Resubmit urb so we continue receiving IRQ data */
 	if (status != -ESHUTDOWN && status != -ENOENT) {
-		urb->dev = serial->dev;
 		err = usb_submit_urb(urb, GFP_ATOMIC);
 		if (err)
 			dbg("%s: resubmit intr urb failed. (%d)",
@@ -913,7 +965,6 @@ static int option_open(struct tty_struct *tty,
 			struct usb_serial_port *port, struct file *filp)
 {
 	struct option_port_private *portdata;
-	struct usb_serial *serial = port->serial;
 	int i, err;
 	struct urb *urb;
 
@@ -921,23 +972,11 @@ static int option_open(struct tty_struct *tty,
 
 	dbg("%s", __func__);
 
-	/* Reset low level data toggle and start reading from endpoints */
+	/* Start reading from the IN endpoint */
 	for (i = 0; i < N_IN_URB; i++) {
 		urb = portdata->in_urbs[i];
 		if (!urb)
 			continue;
-		if (urb->dev != serial->dev) {
-			dbg("%s: dev %p != %p", __func__,
-				urb->dev, serial->dev);
-			continue;
-		}
-
-		/*
-		 * make sure endpoint data toggle is synchronized with the
-		 * device
-		 */
-		usb_clear_halt(urb->dev, urb->pipe);
-
 		err = usb_submit_urb(urb, GFP_KERNEL);
 		if (err) {
 			dbg("%s: submit urb %d failed (%d) %d",
@@ -946,16 +985,6 @@ static int option_open(struct tty_struct *tty,
 		}
 	}
 
-	/* Reset low level data toggle on out endpoints */
-	for (i = 0; i < N_OUT_URB; i++) {
-		urb = portdata->out_urbs[i];
-		if (!urb)
-			continue;
-		urb->dev = serial->dev;
-		/* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-				usb_pipeout(urb->pipe), 0); */
-	}
-
 	option_send_setup(port);
 
 	return 0;
@@ -1195,6 +1224,7 @@ static void option_release(struct usb_serial *serial)
 	}
 }
 
+#ifdef CONFIG_PM
 static int option_suspend(struct usb_serial *serial, pm_message_t message)
 {
 	dbg("%s entered", __func__);
@@ -1218,7 +1248,6 @@ static int option_resume(struct usb_serial *serial)
 			dbg("%s: No interrupt URB for port %d\n", __func__, i);
 			continue;
 		}
-		port->interrupt_in_urb->dev = serial->dev;
 		err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
 		dbg("Submitted interrupt URB for port %d (result %d)", i, err);
 		if (err < 0) {
@@ -1254,6 +1283,7 @@ static int option_resume(struct usb_serial *serial)
 	}
 	return 0;
 }
+#endif
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index ec6c132a25b5..3e86815b2705 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -94,6 +94,8 @@ static struct usb_device_id id_table [] = {
 	{ USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) },
 	{ USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) },
 	{ USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) },
+	{ USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) },
+	{ USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) },
 	{ }					/* Terminating entry */
 };
 
@@ -971,18 +973,46 @@ exit:
 			__func__, retval);
 }
 
+static void pl2303_push_data(struct tty_struct *tty,
+		struct usb_serial_port *port, struct urb *urb,
+		u8 line_status)
+{
+	unsigned char *data = urb->transfer_buffer;
+	/* get tty_flag from status */
+	char tty_flag = TTY_NORMAL;
+	/* break takes precedence over parity, */
+	/* which takes precedence over framing errors */
+	if (line_status & UART_BREAK_ERROR)
+		tty_flag = TTY_BREAK;
+	else if (line_status & UART_PARITY_ERROR)
+		tty_flag = TTY_PARITY;
+	else if (line_status & UART_FRAME_ERROR)
+		tty_flag = TTY_FRAME;
+	dbg("%s - tty_flag = %d", __func__, tty_flag);
+
+	tty_buffer_request_room(tty, urb->actual_length + 1);
+	/* overrun is special, not associated with a char */
+	if (line_status & UART_OVERRUN_ERROR)
+		tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+	if (port->console && port->sysrq) {
+		int i;
+		for (i = 0; i < urb->actual_length; ++i)
+			if (!usb_serial_handle_sysrq_char(tty, port, data[i]))
+				tty_insert_flip_char(tty, data[i], tty_flag);
+	} else
+		tty_insert_flip_string(tty, data, urb->actual_length);
+	tty_flip_buffer_push(tty);
+}
+
 static void pl2303_read_bulk_callback(struct urb *urb)
 {
 	struct usb_serial_port *port =  urb->context;
 	struct pl2303_private *priv = usb_get_serial_port_data(port);
 	struct tty_struct *tty;
-	unsigned char *data = urb->transfer_buffer;
 	unsigned long flags;
-	int i;
 	int result;
 	int status = urb->status;
 	u8 line_status;
-	char tty_flag;
 
 	dbg("%s - port %d", __func__, port->number);
 
@@ -1010,10 +1040,7 @@ static void pl2303_read_bulk_callback(struct urb *urb)
 	}
 
 	usb_serial_debug_data(debug, &port->dev, __func__,
-			      urb->actual_length, data);
-
-	/* get tty_flag from status */
-	tty_flag = TTY_NORMAL;
+			      urb->actual_length, urb->transfer_buffer);
 
 	spin_lock_irqsave(&priv->lock, flags);
 	line_status = priv->line_status;
@@ -1021,26 +1048,9 @@ static void pl2303_read_bulk_callback(struct urb *urb)
 	spin_unlock_irqrestore(&priv->lock, flags);
 	wake_up_interruptible(&priv->delta_msr_wait);
 
-	/* break takes precedence over parity, */
-	/* which takes precedence over framing errors */
-	if (line_status & UART_BREAK_ERROR)
-		tty_flag = TTY_BREAK;
-	else if (line_status & UART_PARITY_ERROR)
-		tty_flag = TTY_PARITY;
-	else if (line_status & UART_FRAME_ERROR)
-		tty_flag = TTY_FRAME;
-	dbg("%s - tty_flag = %d", __func__, tty_flag);
-
 	tty = tty_port_tty_get(&port->port);
 	if (tty && urb->actual_length) {
-		tty_buffer_request_room(tty, urb->actual_length + 1);
-		/* overrun is special, not associated with a char */
-		if (line_status & UART_OVERRUN_ERROR)
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		for (i = 0; i < urb->actual_length; ++i)
-			if (!usb_serial_handle_sysrq_char(port, data[i]))
-				tty_insert_flip_char(tty, data[i], tty_flag);
-		tty_flip_buffer_push(tty);
+		pl2303_push_data(tty, port, urb, line_status);
 	}
 	tty_kref_put(tty);
 	/* Schedule the next read _if_ we are still open */
diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
index 1d7a22e3a9fd..ee9505e1dd92 100644
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@@ -122,3 +122,11 @@
 /* Hewlett-Packard LD220-HP POS Pole Display */
 #define HP_VENDOR_ID		0x03f0
 #define HP_LD220_PRODUCT_ID	0x3524
+
+/* Cressi Edy (diving computer) PC interface */
+#define CRESSI_VENDOR_ID	0x04b8
+#define CRESSI_EDY_PRODUCT_ID	0x0521
+
+/* Sony, USB data cable for CMD-Jxx mobile phones */
+#define SONY_VENDOR_ID		0x054c
+#define SONY_QN3USB_PRODUCT_ID	0x0437
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 032f7aeb40a4..f48d05e0acc1 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -181,35 +181,50 @@ static const struct sierra_iface_info direct_ip_interface_blacklist = {
 };
 
 static struct usb_device_id id_table [] = {
+	{ USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
+	{ USB_DEVICE(0x03F0, 0x1B1D) },	/* HP ev2200 a.k.a MC5720 */
+	{ USB_DEVICE(0x03F0, 0x1E1D) },	/* HP hs2300 a.k.a MC8775 */
+
 	{ USB_DEVICE(0x1199, 0x0017) },	/* Sierra Wireless EM5625 */
 	{ USB_DEVICE(0x1199, 0x0018) },	/* Sierra Wireless MC5720 */
 	{ USB_DEVICE(0x1199, 0x0218) },	/* Sierra Wireless MC5720 */
-	{ USB_DEVICE(0x03f0, 0x1b1d) }, /* HP ev2200 a.k.a MC5720 */
 	{ USB_DEVICE(0x1199, 0x0020) },	/* Sierra Wireless MC5725 */
-	{ USB_DEVICE(0x1199, 0x0024) },	/* Sierra Wireless MC5727 */
 	{ USB_DEVICE(0x1199, 0x0220) },	/* Sierra Wireless MC5725 */
+	{ USB_DEVICE(0x1199, 0x0022) },	/* Sierra Wireless EM5725 */
+	{ USB_DEVICE(0x1199, 0x0024) },	/* Sierra Wireless MC5727 */
+	{ USB_DEVICE(0x1199, 0x0224) },	/* Sierra Wireless MC5727 */
 	{ USB_DEVICE(0x1199, 0x0019) },	/* Sierra Wireless AirCard 595 */
 	{ 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 */
-	 /* Sierra Wireless C597 */
+	/* Sierra Wireless C597 */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
-	 /* Sierra Wireless Device */
+	/* Sierra Wireless T598 */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
-	{ USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */
-	{ USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */
-	{ USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */
+	{ USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
+	{ USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
+	{ USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
+	{ USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
 
 	{ USB_DEVICE(0x1199, 0x6802) },	/* Sierra Wireless MC8755 */
-	{ USB_DEVICE(0x1199, 0x6804) },	/* Sierra Wireless MC8755 */
 	{ USB_DEVICE(0x1199, 0x6803) },	/* Sierra Wireless MC8765 */
+	{ USB_DEVICE(0x1199, 0x6804) },	/* Sierra Wireless MC8755 */
+	{ USB_DEVICE(0x1199, 0x6805) },	/* Sierra Wireless MC8765 */
+	{ USB_DEVICE(0x1199, 0x6808) },	/* Sierra Wireless MC8755 */
+	{ USB_DEVICE(0x1199, 0x6809) },	/* Sierra Wireless MC8765 */
 	{ USB_DEVICE(0x1199, 0x6812) },	/* Sierra Wireless MC8775 & AC 875U */
-	{ USB_DEVICE(0x1199, 0x6813) },	/* Sierra Wireless MC8775 (Lenovo) */
+	{ USB_DEVICE(0x1199, 0x6813) },	/* Sierra Wireless MC8775 */
 	{ USB_DEVICE(0x1199, 0x6815) },	/* Sierra Wireless MC8775 */
-	{ USB_DEVICE(0x03f0, 0x1e1d) },	/* HP hs2300 a.k.a MC8775 */
+	{ USB_DEVICE(0x1199, 0x6816) },	/* Sierra Wireless MC8775 */
 	{ USB_DEVICE(0x1199, 0x6820) },	/* Sierra Wireless AirCard 875 */
 	{ USB_DEVICE(0x1199, 0x6821) },	/* Sierra Wireless AirCard 875U */
+	{ USB_DEVICE(0x1199, 0x6822) },	/* Sierra Wireless AirCard 875E */
 	{ USB_DEVICE(0x1199, 0x6832) },	/* Sierra Wireless MC8780 */
 	{ USB_DEVICE(0x1199, 0x6833) },	/* Sierra Wireless MC8781 */
+	{ USB_DEVICE(0x1199, 0x6834) },	/* Sierra Wireless MC8780 */
+	{ USB_DEVICE(0x1199, 0x6835) },	/* Sierra Wireless MC8781 */
+	{ USB_DEVICE(0x1199, 0x6838) },	/* Sierra Wireless MC8780 */
+	{ USB_DEVICE(0x1199, 0x6839) },	/* Sierra Wireless MC8781 */
 	{ USB_DEVICE(0x1199, 0x683A) },	/* Sierra Wireless MC8785 */
 	{ USB_DEVICE(0x1199, 0x683B) },	/* Sierra Wireless MC8785 Composite */
 	/* Sierra Wireless MC8790, MC8791, MC8792 Composite */
@@ -227,16 +242,13 @@ static struct usb_device_id id_table [] = {
 	{ USB_DEVICE(0x1199, 0x685A) },	/* Sierra Wireless AirCard 885 E */
 	/* Sierra Wireless C885 */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
-	/* Sierra Wireless Device */
+	/* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
-	/* Sierra Wireless Device */
+	/* Sierra Wireless C22/C33 */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
-	/* Sierra Wireless Device */
+	/* Sierra Wireless HSPA Non-Composite Device */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
-
-	{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
-	{ USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
-
+	{ USB_DEVICE(0x1199, 0x6893) },	/* Sierra Wireless Device */
 	{ USB_DEVICE(0x1199, 0x68A3), 	/* Sierra Wireless Direct IP modems */
 	  .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
 	},
@@ -814,7 +826,7 @@ static int sierra_startup(struct usb_serial *serial)
 	return 0;
 }
 
-static void sierra_disconnect(struct usb_serial *serial)
+static void sierra_release(struct usb_serial *serial)
 {
 	int i;
 	struct usb_serial_port *port;
@@ -830,7 +842,6 @@ static void sierra_disconnect(struct usb_serial *serial)
 		if (!portdata)
 			continue;
 		kfree(portdata);
-		usb_set_serial_port_data(port, NULL);
 	}
 }
 
@@ -853,7 +864,7 @@ static struct usb_serial_driver sierra_device = {
 	.tiocmget          = sierra_tiocmget,
 	.tiocmset          = sierra_tiocmset,
 	.attach            = sierra_startup,
-	.disconnect        = sierra_disconnect,
+	.release           = sierra_release,
 	.read_int_callback = sierra_instat_callback,
 };
 
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 991d8232e376..3bc609fe2242 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -191,7 +191,6 @@ static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
 	{ USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
 	{ USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
 	{ USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
-	{ USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
 };
 
 static struct usb_device_id ti_id_table_combined[14+2*TI_EXTRA_VID_PID_COUNT+1] = {
@@ -728,7 +727,7 @@ static int ti_write_room(struct tty_struct *tty)
 	dbg("%s - port %d", __func__, port->number);
 
 	if (tport == NULL)
-		return -ENODEV;
+		return 0;
 
 	spin_lock_irqsave(&tport->tp_lock, flags);
 	room = ti_buf_space_avail(tport->tp_write_buf);
@@ -749,7 +748,7 @@ static int ti_chars_in_buffer(struct tty_struct *tty)
 	dbg("%s - port %d", __func__, port->number);
 
 	if (tport == NULL)
-		return -ENODEV;
+		return 0;
 
 	spin_lock_irqsave(&tport->tp_lock, flags);
 	chars = ti_buf_data_avail(tport->tp_write_buf);
@@ -1658,7 +1657,7 @@ static int ti_do_download(struct usb_device *dev, int pipe,
 	u8 cs = 0;
 	int done;
 	struct ti_firmware_header *header;
-	int status;
+	int status = 0;
 	int len;
 
 	for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index a84216464ca0..99188c92068b 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -21,6 +21,7 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
@@ -31,6 +32,7 @@
 #include <linux/mutex.h>
 #include <linux/list.h>
 #include <linux/uaccess.h>
+#include <linux/serial.h>
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
 #include "pl2303.h"
@@ -183,6 +185,7 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
 	struct usb_serial_port *port;
 	unsigned int portNumber;
 	int retval = 0;
+	int first = 0;
 
 	dbg("%s", __func__);
 
@@ -220,8 +223,9 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
 	tty->driver_data = port;
 	tty_port_tty_set(&port->port, tty);
 
-	if (port->port.count == 1) {
-
+	/* If the console is attached, the device is already open */
+	if (port->port.count == 1 && !port->console) {
+		first = 1;
 		/* lock this module before we call it
 		 * this may fail, which means we must bail out,
 		 * safe because we are called with BKL held */
@@ -244,13 +248,21 @@ static int serial_open (struct tty_struct *tty, struct file *filp)
 		if (retval)
 			goto bailout_interface_put;
 		mutex_unlock(&serial->disc_mutex);
+		set_bit(ASYNCB_INITIALIZED, &port->port.flags);
 	}
 	mutex_unlock(&port->mutex);
 	/* Now do the correct tty layer semantics */
 	retval = tty_port_block_til_ready(&port->port, tty, filp);
-	if (retval == 0)
+	if (retval == 0) {
+		if (!first)
+			usb_serial_put(serial);
 		return 0;
-
+	}
+	mutex_lock(&port->mutex);
+	if (first == 0)
+		goto bailout_mutex_unlock;
+	/* Undo the initial port actions */
+	mutex_lock(&serial->disc_mutex);
 bailout_interface_put:
 	usb_autopm_put_interface(serial->interface);
 bailout_module_put:
@@ -338,6 +350,22 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
 
 	dbg("%s - port %d", __func__, port->number);
 
+	/* FIXME:
+	   This leaves a very narrow race. Really we should do the
+	   serial_do_free() on tty->shutdown(), but tty->shutdown can
+	   be called from IRQ context and serial_do_free can sleep.
+
+	   The right fix is probably to make the tty free (which is rare)
+	   and thus tty->shutdown() occur via a work queue and simplify all
+	   the drivers that use it.
+	*/
+	if (tty_hung_up_p(filp)) {
+		/* serial_hangup already called serial_down at this point.
+		   Another user may have already reopened the port but
+		   serial_do_free is refcounted */
+		serial_do_free(port);
+		return;
+	}
 
 	if (tty_port_close_start(&port->port, tty, filp) == 0)
 		return;
@@ -353,7 +381,8 @@ static void serial_hangup(struct tty_struct *tty)
 	struct usb_serial_port *port = tty->driver_data;
 	serial_do_down(port);
 	tty_port_hangup(&port->port);
-	serial_do_free(port);
+	/* We must not free port yet - the USB serial layer depends on it's
+	   continued existence */
 }
 
 static int serial_write(struct tty_struct *tty, const unsigned char *buf,
@@ -392,7 +421,6 @@ static int serial_chars_in_buffer(struct tty_struct *tty)
 	struct usb_serial_port *port = tty->driver_data;
 	dbg("%s = port %d", __func__, port->number);
 
-	WARN_ON(!port->port.count);
 	/* if the device was unplugged then any remaining characters
 	   fell out of the connector ;) */
 	if (port->serial->disconnected)
diff --git a/drivers/usb/storage/option_ms.c b/drivers/usb/storage/option_ms.c
index d41cc0a970f7..773a5cd38c5a 100644
--- a/drivers/usb/storage/option_ms.c
+++ b/drivers/usb/storage/option_ms.c
@@ -118,6 +118,9 @@ static int option_inquiry(struct us_data *us)
 
 	result = memcmp(buffer+8, "Option", 6);
 
+	if (result != 0)
+		result = memcmp(buffer+8, "ZCOPTION", 8);
+
 	/* Read the CSW */
 	usb_stor_bulk_transfer_buf(us,
 			us->recv_bulk_pipe,
diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index fcb320217218..e20dc525d177 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -961,7 +961,7 @@ int usb_stor_Bulk_max_lun(struct us_data *us)
 				 US_BULK_GET_MAX_LUN, 
 				 USB_DIR_IN | USB_TYPE_CLASS | 
 				 USB_RECIP_INTERFACE,
-				 0, us->ifnum, us->iobuf, 1, HZ);
+				 0, us->ifnum, us->iobuf, 1, 10*HZ);
 
 	US_DEBUGP("GetMaxLUN command result is %d, data is %d\n", 
 		  result, us->iobuf[0]);
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 1b9c5dd0fb27..7477d411959f 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -838,6 +838,13 @@ UNUSUAL_DEV( 0x066f, 0x8000, 0x0001, 0x0001,
 		US_SC_DEVICE, US_PR_DEVICE, NULL,
 		US_FL_FIX_CAPACITY ),
 
+/* Reported by Rogerio Brito <rbrito@ime.usp.br> */
+UNUSUAL_DEV( 0x067b, 0x2317, 0x0001, 0x001,
+		"Prolific Technology, Inc.",
+		"Mass Storage Device",
+		US_SC_DEVICE, US_PR_DEVICE, NULL,
+		US_FL_NOT_LOCKABLE ),
+
 /* Reported by Richard -=[]=- <micro_flyer@hotmail.com> */
 /* Change to bcdDeviceMin (0x0100 to 0x0001) reported by
  * Thomas Bartosik <tbartdev@gmx-topmail.de> */