Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3224 insertions, 0 deletions

diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c
new file mode 100644
index 000000000..995bc52d2
--- /dev/null
+++ b/drivers/usb/host/u132-hcd.c
@@ -0,0 +1,3224 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+* Host Controller Driver for the Elan Digital Systems U132 adapter
+*
+* Copyright(C) 2006 Elan Digital Systems Limited
+* http://www.elandigitalsystems.com
+*
+* Author and Maintainer - Tony Olech - Elan Digital Systems
+* tony.olech@elandigitalsystems.com
+*
+* This driver was written by Tony Olech(tony.olech@elandigitalsystems.com)
+* based on various USB host drivers in the 2.6.15 linux kernel
+* with constant reference to the 3rd Edition of Linux Device Drivers
+* published by O'Reilly
+*
+* The U132 adapter is a USB to CardBus adapter specifically designed
+* for PC cards that contain an OHCI host controller. Typical PC cards
+* are the Orange Mobile 3G Option GlobeTrotter Fusion card.
+*
+* The U132 adapter will *NOT *work with PC cards that do not contain
+* an OHCI controller. A simple way to test whether a PC card has an
+* OHCI controller as an interface is to insert the PC card directly
+* into a laptop(or desktop) with a CardBus slot and if "lspci" shows
+* a new USB controller and "lsusb -v" shows a new OHCI Host Controller
+* then there is a good chance that the U132 adapter will support the
+* PC card.(you also need the specific client driver for the PC card)
+*
+* Please inform the Author and Maintainer about any PC cards that
+* contain OHCI Host Controller and work when directly connected to
+* an embedded CardBus slot but do not work when they are connected
+* via an ELAN U132 adapter.
+*
+*/
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/pci_ids.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/byteorder.h>
+
+	/* FIXME ohci.h is ONLY for internal use by the OHCI driver.
+	 * If you're going to try stuff like this, you need to split
+	 * out shareable stuff (register declarations?) into its own
+	 * file, maybe name <linux/usb/ohci.h>
+	 */
+
+#include "ohci.h"
+#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
+#define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \
+	OHCI_INTR_WDH)
+MODULE_AUTHOR("Tony Olech - Elan Digital Systems Limited");
+MODULE_DESCRIPTION("U132 USB Host Controller Driver");
+MODULE_LICENSE("GPL");
+#define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
+INT_MODULE_PARM(testing, 0);
+/* Some boards misreport power switching/overcurrent*/
+static bool distrust_firmware = true;
+module_param(distrust_firmware, bool, 0);
+MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurrent"
+	"t setup");
+static DECLARE_WAIT_QUEUE_HEAD(u132_hcd_wait);
+/*
+* u132_module_lock exists to protect access to global variables
+*
+*/
+static struct mutex u132_module_lock;
+static int u132_exiting;
+static int u132_instances;
+/*
+* end of the global variables protected by u132_module_lock
+*/
+static struct workqueue_struct *workqueue;
+#define MAX_U132_PORTS 7
+#define MAX_U132_ADDRS 128
+#define MAX_U132_UDEVS 4
+#define MAX_U132_ENDPS 100
+#define MAX_U132_RINGS 4
+static const char *cc_to_text[16] = {
+	"No Error ",
+	"CRC Error ",
+	"Bit Stuff ",
+	"Data Togg ",
+	"Stall ",
+	"DevNotResp ",
+	"PIDCheck ",
+	"UnExpPID ",
+	"DataOver ",
+	"DataUnder ",
+	"(for hw) ",
+	"(for hw) ",
+	"BufferOver ",
+	"BuffUnder ",
+	"(for HCD) ",
+	"(for HCD) "
+};
+struct u132_port {
+	struct u132 *u132;
+	int reset;
+	int enable;
+	int power;
+	int Status;
+};
+struct u132_addr {
+	u8 address;
+};
+struct u132_udev {
+	struct kref kref;
+	struct usb_device *usb_device;
+	u8 enumeration;
+	u8 udev_number;
+	u8 usb_addr;
+	u8 portnumber;
+	u8 endp_number_in[16];
+	u8 endp_number_out[16];
+};
+#define ENDP_QUEUE_SHIFT 3
+#define ENDP_QUEUE_SIZE (1<<ENDP_QUEUE_SHIFT)
+#define ENDP_QUEUE_MASK (ENDP_QUEUE_SIZE-1)
+struct u132_urbq {
+	struct list_head urb_more;
+	struct urb *urb;
+};
+struct u132_spin {
+	spinlock_t slock;
+};
+struct u132_endp {
+	struct kref kref;
+	u8 udev_number;
+	u8 endp_number;
+	u8 usb_addr;
+	u8 usb_endp;
+	struct u132 *u132;
+	struct list_head endp_ring;
+	struct u132_ring *ring;
+	unsigned toggle_bits:2;
+	unsigned active:1;
+	unsigned delayed:1;
+	unsigned input:1;
+	unsigned output:1;
+	unsigned pipetype:2;
+	unsigned dequeueing:1;
+	unsigned edset_flush:1;
+	unsigned spare_bits:14;
+	unsigned long jiffies;
+	struct usb_host_endpoint *hep;
+	struct u132_spin queue_lock;
+	u16 queue_size;
+	u16 queue_last;
+	u16 queue_next;
+	struct urb *urb_list[ENDP_QUEUE_SIZE];
+	struct list_head urb_more;
+	struct delayed_work scheduler;
+};
+struct u132_ring {
+	unsigned in_use:1;
+	unsigned length:7;
+	u8 number;
+	struct u132 *u132;
+	struct u132_endp *curr_endp;
+	struct delayed_work scheduler;
+};
+struct u132 {
+	struct kref kref;
+	struct mutex sw_lock;
+	struct mutex scheduler_lock;
+	struct u132_platform_data *board;
+	struct platform_device *platform_dev;
+	struct u132_ring ring[MAX_U132_RINGS];
+	int sequence_num;
+	int going;
+	int power;
+	int reset;
+	int num_ports;
+	u32 hc_control;
+	u32 hc_fminterval;
+	u32 hc_roothub_status;
+	u32 hc_roothub_a;
+	u32 hc_roothub_portstatus[MAX_ROOT_PORTS];
+	int flags;
+	unsigned long next_statechange;
+	struct delayed_work monitor;
+	int num_endpoints;
+	struct u132_addr addr[MAX_U132_ADDRS];
+	struct u132_udev udev[MAX_U132_UDEVS];
+	struct u132_port port[MAX_U132_PORTS];
+	struct u132_endp *endp[MAX_U132_ENDPS];
+};
+
+/*
+* these cannot be inlines because we need the structure offset!!
+* Does anyone have a better way?????
+*/
+#define ftdi_read_pcimem(pdev, member, data) usb_ftdi_elan_read_pcimem(pdev, \
+	offsetof(struct ohci_regs, member), 0, data);
+#define ftdi_write_pcimem(pdev, member, data) usb_ftdi_elan_write_pcimem(pdev, \
+	offsetof(struct ohci_regs, member), 0, data);
+#define u132_read_pcimem(u132, member, data) \
+	usb_ftdi_elan_read_pcimem(u132->platform_dev, offsetof(struct \
+	ohci_regs, member), 0, data);
+#define u132_write_pcimem(u132, member, data) \
+	usb_ftdi_elan_write_pcimem(u132->platform_dev, offsetof(struct \
+	ohci_regs, member), 0, data);
+static inline struct u132 *udev_to_u132(struct u132_udev *udev)
+{
+	u8 udev_number = udev->udev_number;
+	return container_of(udev, struct u132, udev[udev_number]);
+}
+
+static inline struct u132 *hcd_to_u132(struct usb_hcd *hcd)
+{
+	return (struct u132 *)(hcd->hcd_priv);
+}
+
+static inline struct usb_hcd *u132_to_hcd(struct u132 *u132)
+{
+	return container_of((void *)u132, struct usb_hcd, hcd_priv);
+}
+
+static inline void u132_disable(struct u132 *u132)
+{
+	u132_to_hcd(u132)->state = HC_STATE_HALT;
+}
+
+
+#define kref_to_u132(d) container_of(d, struct u132, kref)
+#define kref_to_u132_endp(d) container_of(d, struct u132_endp, kref)
+#define kref_to_u132_udev(d) container_of(d, struct u132_udev, kref)
+#include "../misc/usb_u132.h"
+static const char hcd_name[] = "u132_hcd";
+#define PORT_C_MASK ((USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE | \
+	USB_PORT_STAT_C_SUSPEND | USB_PORT_STAT_C_OVERCURRENT | \
+	USB_PORT_STAT_C_RESET) << 16)
+static void u132_hcd_delete(struct kref *kref)
+{
+	struct u132 *u132 = kref_to_u132(kref);
+	struct platform_device *pdev = u132->platform_dev;
+	struct usb_hcd *hcd = u132_to_hcd(u132);
+	u132->going += 1;
+	mutex_lock(&u132_module_lock);
+	u132_instances -= 1;
+	mutex_unlock(&u132_module_lock);
+	dev_warn(&u132->platform_dev->dev, "FREEING the hcd=%p and thus the u13"
+		"2=%p going=%d pdev=%p\n", hcd, u132, u132->going, pdev);
+	usb_put_hcd(hcd);
+}
+
+static inline void u132_u132_put_kref(struct u132 *u132)
+{
+	kref_put(&u132->kref, u132_hcd_delete);
+}
+
+static inline void u132_u132_init_kref(struct u132 *u132)
+{
+	kref_init(&u132->kref);
+}
+
+static void u132_udev_delete(struct kref *kref)
+{
+	struct u132_udev *udev = kref_to_u132_udev(kref);
+	udev->udev_number = 0;
+	udev->usb_device = NULL;
+	udev->usb_addr = 0;
+	udev->enumeration = 0;
+}
+
+static inline void u132_udev_put_kref(struct u132 *u132, struct u132_udev *udev)
+{
+	kref_put(&udev->kref, u132_udev_delete);
+}
+
+static inline void u132_udev_get_kref(struct u132 *u132, struct u132_udev *udev)
+{
+	kref_get(&udev->kref);
+}
+
+static inline void u132_udev_init_kref(struct u132 *u132,
+	struct u132_udev *udev)
+{
+	kref_init(&udev->kref);
+}
+
+static inline void u132_ring_put_kref(struct u132 *u132, struct u132_ring *ring)
+{
+	kref_put(&u132->kref, u132_hcd_delete);
+}
+
+static void u132_ring_requeue_work(struct u132 *u132, struct u132_ring *ring,
+	unsigned int delta)
+{
+	if (delta > 0) {
+		if (queue_delayed_work(workqueue, &ring->scheduler, delta))
+			return;
+	} else if (queue_delayed_work(workqueue, &ring->scheduler, 0))
+		return;
+	kref_put(&u132->kref, u132_hcd_delete);
+}
+
+static void u132_ring_queue_work(struct u132 *u132, struct u132_ring *ring,
+	unsigned int delta)
+{
+	kref_get(&u132->kref);
+	u132_ring_requeue_work(u132, ring, delta);
+}
+
+static void u132_ring_cancel_work(struct u132 *u132, struct u132_ring *ring)
+{
+	if (cancel_delayed_work(&ring->scheduler))
+		kref_put(&u132->kref, u132_hcd_delete);
+}
+
+static void u132_endp_delete(struct kref *kref)
+{
+	struct u132_endp *endp = kref_to_u132_endp(kref);
+	struct u132 *u132 = endp->u132;
+	u8 usb_addr = endp->usb_addr;
+	u8 usb_endp = endp->usb_endp;
+	u8 address = u132->addr[usb_addr].address;
+	struct u132_udev *udev = &u132->udev[address];
+	u8 endp_number = endp->endp_number;
+	struct usb_host_endpoint *hep = endp->hep;
+	struct u132_ring *ring = endp->ring;
+	struct list_head *head = &endp->endp_ring;
+	ring->length -= 1;
+	if (endp == ring->curr_endp) {
+		if (list_empty(head)) {
+			ring->curr_endp = NULL;
+			list_del(head);
+		} else {
+			struct u132_endp *next_endp = list_entry(head->next,
+				struct u132_endp, endp_ring);
+			ring->curr_endp = next_endp;
+			list_del(head);
+		}
+	} else
+		list_del(head);
+	if (endp->input) {
+		udev->endp_number_in[usb_endp] = 0;
+		u132_udev_put_kref(u132, udev);
+	}
+	if (endp->output) {
+		udev->endp_number_out[usb_endp] = 0;
+		u132_udev_put_kref(u132, udev);
+	}
+	u132->endp[endp_number - 1] = NULL;
+	hep->hcpriv = NULL;
+	kfree(endp);
+	u132_u132_put_kref(u132);
+}
+
+static inline void u132_endp_put_kref(struct u132 *u132, struct u132_endp *endp)
+{
+	kref_put(&endp->kref, u132_endp_delete);
+}
+
+static inline void u132_endp_get_kref(struct u132 *u132, struct u132_endp *endp)
+{
+	kref_get(&endp->kref);
+}
+
+static inline void u132_endp_init_kref(struct u132 *u132,
+	struct u132_endp *endp)
+{
+	kref_init(&endp->kref);
+	kref_get(&u132->kref);
+}
+
+static void u132_endp_queue_work(struct u132 *u132, struct u132_endp *endp,
+	unsigned int delta)
+{
+	if (queue_delayed_work(workqueue, &endp->scheduler, delta))
+		kref_get(&endp->kref);
+}
+
+static void u132_endp_cancel_work(struct u132 *u132, struct u132_endp *endp)
+{
+	if (cancel_delayed_work(&endp->scheduler))
+		kref_put(&endp->kref, u132_endp_delete);
+}
+
+static inline void u132_monitor_put_kref(struct u132 *u132)
+{
+	kref_put(&u132->kref, u132_hcd_delete);
+}
+
+static void u132_monitor_queue_work(struct u132 *u132, unsigned int delta)
+{
+	if (queue_delayed_work(workqueue, &u132->monitor, delta))
+		kref_get(&u132->kref);
+}
+
+static void u132_monitor_requeue_work(struct u132 *u132, unsigned int delta)
+{
+	if (!queue_delayed_work(workqueue, &u132->monitor, delta))
+		kref_put(&u132->kref, u132_hcd_delete);
+}
+
+static void u132_monitor_cancel_work(struct u132 *u132)
+{
+	if (cancel_delayed_work(&u132->monitor))
+		kref_put(&u132->kref, u132_hcd_delete);
+}
+
+static int read_roothub_info(struct u132 *u132)
+{
+	u32 revision;
+	int retval;
+	retval = u132_read_pcimem(u132, revision, &revision);
+	if (retval) {
+		dev_err(&u132->platform_dev->dev, "error %d accessing device co"
+			"ntrol\n", retval);
+		return retval;
+	} else if ((revision & 0xFF) == 0x10) {
+	} else if ((revision & 0xFF) == 0x11) {
+	} else {
+		dev_err(&u132->platform_dev->dev, "device revision is not valid"
+			" %08X\n", revision);
+		return -ENODEV;
+	}
+	retval = u132_read_pcimem(u132, control, &u132->hc_control);
+	if (retval) {
+		dev_err(&u132->platform_dev->dev, "error %d accessing device co"
+			"ntrol\n", retval);
+		return retval;
+	}
+	retval = u132_read_pcimem(u132, roothub.status,
+		&u132->hc_roothub_status);
+	if (retval) {
+		dev_err(&u132->platform_dev->dev, "error %d accessing device re"
+			"g roothub.status\n", retval);
+		return retval;
+	}
+	retval = u132_read_pcimem(u132, roothub.a, &u132->hc_roothub_a);
+	if (retval) {
+		dev_err(&u132->platform_dev->dev, "error %d accessing device re"
+			"g roothub.a\n", retval);
+		return retval;
+	}
+	{
+		int I = u132->num_ports;
+		int i = 0;
+		while (I-- > 0) {
+			retval = u132_read_pcimem(u132, roothub.portstatus[i],
+				&u132->hc_roothub_portstatus[i]);
+			if (retval) {
+				dev_err(&u132->platform_dev->dev, "error %d acc"
+					"essing device roothub.portstatus[%d]\n"
+					, retval, i);
+				return retval;
+			} else
+				i += 1;
+		}
+	}
+	return 0;
+}
+
+static void u132_hcd_monitor_work(struct work_struct *work)
+{
+	struct u132 *u132 = container_of(work, struct u132, monitor.work);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		u132_monitor_put_kref(u132);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		u132_monitor_put_kref(u132);
+		return;
+	} else {
+		int retval;
+		mutex_lock(&u132->sw_lock);
+		retval = read_roothub_info(u132);
+		if (retval) {
+			struct usb_hcd *hcd = u132_to_hcd(u132);
+			u132_disable(u132);
+			u132->going = 1;
+			mutex_unlock(&u132->sw_lock);
+			usb_hc_died(hcd);
+			ftdi_elan_gone_away(u132->platform_dev);
+			u132_monitor_put_kref(u132);
+			return;
+		} else {
+			u132_monitor_requeue_work(u132, 500);
+			mutex_unlock(&u132->sw_lock);
+			return;
+		}
+	}
+}
+
+static void u132_hcd_giveback_urb(struct u132 *u132, struct u132_endp *endp,
+	struct urb *urb, int status)
+{
+	struct u132_ring *ring;
+	unsigned long irqs;
+	struct usb_hcd *hcd = u132_to_hcd(u132);
+	urb->error_count = 0;
+	spin_lock_irqsave(&endp->queue_lock.slock, irqs);
+	usb_hcd_unlink_urb_from_ep(hcd, urb);
+	endp->queue_next += 1;
+	if (ENDP_QUEUE_SIZE > --endp->queue_size) {
+		endp->active = 0;
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+	} else {
+		struct list_head *next = endp->urb_more.next;
+		struct u132_urbq *urbq = list_entry(next, struct u132_urbq,
+			urb_more);
+		list_del(next);
+		endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
+			urbq->urb;
+		endp->active = 0;
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		kfree(urbq);
+	}
+	mutex_lock(&u132->scheduler_lock);
+	ring = endp->ring;
+	ring->in_use = 0;
+	u132_ring_cancel_work(u132, ring);
+	u132_ring_queue_work(u132, ring, 0);
+	mutex_unlock(&u132->scheduler_lock);
+	u132_endp_put_kref(u132, endp);
+	usb_hcd_giveback_urb(hcd, urb, status);
+}
+
+static void u132_hcd_forget_urb(struct u132 *u132, struct u132_endp *endp,
+	struct urb *urb, int status)
+{
+	u132_endp_put_kref(u132, endp);
+}
+
+static void u132_hcd_abandon_urb(struct u132 *u132, struct u132_endp *endp,
+	struct urb *urb, int status)
+{
+	unsigned long irqs;
+	struct usb_hcd *hcd = u132_to_hcd(u132);
+	urb->error_count = 0;
+	spin_lock_irqsave(&endp->queue_lock.slock, irqs);
+	usb_hcd_unlink_urb_from_ep(hcd, urb);
+	endp->queue_next += 1;
+	if (ENDP_QUEUE_SIZE > --endp->queue_size) {
+		endp->active = 0;
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+	} else {
+		struct list_head *next = endp->urb_more.next;
+		struct u132_urbq *urbq = list_entry(next, struct u132_urbq,
+			urb_more);
+		list_del(next);
+		endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
+			urbq->urb;
+		endp->active = 0;
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		kfree(urbq);
+	}
+	usb_hcd_giveback_urb(hcd, urb, status);
+}
+
+static inline int edset_input(struct u132 *u132, struct u132_ring *ring,
+	struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
+	void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+	int toggle_bits, int error_count, int condition_code, int repeat_number,
+	 int halted, int skipped, int actual, int non_null))
+{
+	return usb_ftdi_elan_edset_input(u132->platform_dev, ring->number, endp,
+		 urb, address, endp->usb_endp, toggle_bits, callback);
+}
+
+static inline int edset_setup(struct u132 *u132, struct u132_ring *ring,
+	struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
+	void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+	int toggle_bits, int error_count, int condition_code, int repeat_number,
+	 int halted, int skipped, int actual, int non_null))
+{
+	return usb_ftdi_elan_edset_setup(u132->platform_dev, ring->number, endp,
+		 urb, address, endp->usb_endp, toggle_bits, callback);
+}
+
+static inline int edset_single(struct u132 *u132, struct u132_ring *ring,
+	struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
+	void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+	int toggle_bits, int error_count, int condition_code, int repeat_number,
+	 int halted, int skipped, int actual, int non_null))
+{
+	return usb_ftdi_elan_edset_single(u132->platform_dev, ring->number,
+		endp, urb, address, endp->usb_endp, toggle_bits, callback);
+}
+
+static inline int edset_output(struct u132 *u132, struct u132_ring *ring,
+	struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
+	void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
+	int toggle_bits, int error_count, int condition_code, int repeat_number,
+	 int halted, int skipped, int actual, int non_null))
+{
+	return usb_ftdi_elan_edset_output(u132->platform_dev, ring->number,
+		endp, urb, address, endp->usb_endp, toggle_bits, callback);
+}
+
+
+/*
+* must not LOCK sw_lock
+*
+*/
+static void u132_hcd_interrupt_recv(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	u8 address = u132->addr[endp->usb_addr].address;
+	struct u132_udev *udev = &u132->udev[address];
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		struct u132_ring *ring = endp->ring;
+		u8 *u = urb->transfer_buffer + urb->actual_length;
+		u8 *b = buf;
+		int L = len;
+
+		while (L-- > 0)
+			*u++ = *b++;
+
+		urb->actual_length += len;
+		if ((condition_code == TD_CC_NOERROR) &&
+			(urb->transfer_buffer_length > urb->actual_length)) {
+			endp->toggle_bits = toggle_bits;
+			usb_settoggle(udev->usb_device, endp->usb_endp, 0,
+				1 & toggle_bits);
+			if (urb->actual_length > 0) {
+				int retval;
+				mutex_unlock(&u132->scheduler_lock);
+				retval = edset_single(u132, ring, endp, urb,
+					address, endp->toggle_bits,
+					u132_hcd_interrupt_recv);
+				if (retval != 0)
+					u132_hcd_giveback_urb(u132, endp, urb,
+						retval);
+			} else {
+				ring->in_use = 0;
+				endp->active = 0;
+				endp->jiffies = jiffies +
+					msecs_to_jiffies(urb->interval);
+				u132_ring_cancel_work(u132, ring);
+				u132_ring_queue_work(u132, ring, 0);
+				mutex_unlock(&u132->scheduler_lock);
+				u132_endp_put_kref(u132, endp);
+			}
+			return;
+		} else if ((condition_code == TD_DATAUNDERRUN) &&
+			((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
+			endp->toggle_bits = toggle_bits;
+			usb_settoggle(udev->usb_device, endp->usb_endp, 0,
+				1 & toggle_bits);
+			mutex_unlock(&u132->scheduler_lock);
+			u132_hcd_giveback_urb(u132, endp, urb, 0);
+			return;
+		} else {
+			if (condition_code == TD_CC_NOERROR) {
+				endp->toggle_bits = toggle_bits;
+				usb_settoggle(udev->usb_device, endp->usb_endp,
+					0, 1 & toggle_bits);
+			} else if (condition_code == TD_CC_STALL) {
+				endp->toggle_bits = 0x2;
+				usb_settoggle(udev->usb_device, endp->usb_endp,
+					0, 0);
+			} else {
+				endp->toggle_bits = 0x2;
+				usb_settoggle(udev->usb_device, endp->usb_endp,
+					0, 0);
+				dev_err(&u132->platform_dev->dev, "urb=%p givin"
+					"g back INTERRUPT %s\n", urb,
+					cc_to_text[condition_code]);
+			}
+			mutex_unlock(&u132->scheduler_lock);
+			u132_hcd_giveback_urb(u132, endp, urb,
+				cc_to_error[condition_code]);
+			return;
+		}
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_bulk_output_sent(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	u8 address = u132->addr[endp->usb_addr].address;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		struct u132_ring *ring = endp->ring;
+		urb->actual_length += len;
+		endp->toggle_bits = toggle_bits;
+		if (urb->transfer_buffer_length > urb->actual_length) {
+			int retval;
+			mutex_unlock(&u132->scheduler_lock);
+			retval = edset_output(u132, ring, endp, urb, address,
+				endp->toggle_bits, u132_hcd_bulk_output_sent);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		} else {
+			mutex_unlock(&u132->scheduler_lock);
+			u132_hcd_giveback_urb(u132, endp, urb, 0);
+			return;
+		}
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_bulk_input_recv(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	u8 address = u132->addr[endp->usb_addr].address;
+	struct u132_udev *udev = &u132->udev[address];
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		struct u132_ring *ring = endp->ring;
+		u8 *u = urb->transfer_buffer + urb->actual_length;
+		u8 *b = buf;
+		int L = len;
+
+		while (L-- > 0)
+			*u++ = *b++;
+
+		urb->actual_length += len;
+		if ((condition_code == TD_CC_NOERROR) &&
+			(urb->transfer_buffer_length > urb->actual_length)) {
+			int retval;
+			endp->toggle_bits = toggle_bits;
+			usb_settoggle(udev->usb_device, endp->usb_endp, 0,
+				1 & toggle_bits);
+			mutex_unlock(&u132->scheduler_lock);
+			retval = usb_ftdi_elan_edset_input(u132->platform_dev,
+				ring->number, endp, urb, address,
+				endp->usb_endp, endp->toggle_bits,
+				u132_hcd_bulk_input_recv);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		} else if (condition_code == TD_CC_NOERROR) {
+			endp->toggle_bits = toggle_bits;
+			usb_settoggle(udev->usb_device, endp->usb_endp, 0,
+				1 & toggle_bits);
+			mutex_unlock(&u132->scheduler_lock);
+			u132_hcd_giveback_urb(u132, endp, urb,
+				cc_to_error[condition_code]);
+			return;
+		} else if ((condition_code == TD_DATAUNDERRUN) &&
+			((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
+			endp->toggle_bits = toggle_bits;
+			usb_settoggle(udev->usb_device, endp->usb_endp, 0,
+				1 & toggle_bits);
+			mutex_unlock(&u132->scheduler_lock);
+			u132_hcd_giveback_urb(u132, endp, urb, 0);
+			return;
+		} else if (condition_code == TD_DATAUNDERRUN) {
+			endp->toggle_bits = toggle_bits;
+			usb_settoggle(udev->usb_device, endp->usb_endp, 0,
+				1 & toggle_bits);
+			dev_warn(&u132->platform_dev->dev, "urb=%p(SHORT NOT OK"
+				") giving back BULK IN %s\n", urb,
+				cc_to_text[condition_code]);
+			mutex_unlock(&u132->scheduler_lock);
+			u132_hcd_giveback_urb(u132, endp, urb, 0);
+			return;
+		} else if (condition_code == TD_CC_STALL) {
+			endp->toggle_bits = 0x2;
+			usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
+			mutex_unlock(&u132->scheduler_lock);
+			u132_hcd_giveback_urb(u132, endp, urb,
+				cc_to_error[condition_code]);
+			return;
+		} else {
+			endp->toggle_bits = 0x2;
+			usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
+			dev_err(&u132->platform_dev->dev, "urb=%p giving back B"
+				"ULK IN code=%d %s\n", urb, condition_code,
+				cc_to_text[condition_code]);
+			mutex_unlock(&u132->scheduler_lock);
+			u132_hcd_giveback_urb(u132, endp, urb,
+				cc_to_error[condition_code]);
+			return;
+		}
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_configure_empty_sent(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_configure_input_recv(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	u8 address = u132->addr[endp->usb_addr].address;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		struct u132_ring *ring = endp->ring;
+		u8 *u = urb->transfer_buffer;
+		u8 *b = buf;
+		int L = len;
+
+		while (L-- > 0)
+			*u++ = *b++;
+
+		urb->actual_length = len;
+		if ((condition_code == TD_CC_NOERROR) || ((condition_code ==
+			TD_DATAUNDERRUN) && ((urb->transfer_flags &
+			URB_SHORT_NOT_OK) == 0))) {
+			int retval;
+			mutex_unlock(&u132->scheduler_lock);
+			retval = usb_ftdi_elan_edset_empty(u132->platform_dev,
+				ring->number, endp, urb, address,
+				endp->usb_endp, 0x3,
+				u132_hcd_configure_empty_sent);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		} else if (condition_code == TD_CC_STALL) {
+			mutex_unlock(&u132->scheduler_lock);
+			dev_warn(&u132->platform_dev->dev, "giving back SETUP I"
+				"NPUT STALL urb %p\n", urb);
+			u132_hcd_giveback_urb(u132, endp, urb,
+				cc_to_error[condition_code]);
+			return;
+		} else {
+			mutex_unlock(&u132->scheduler_lock);
+			dev_err(&u132->platform_dev->dev, "giving back SETUP IN"
+				"PUT %s urb %p\n", cc_to_text[condition_code],
+				urb);
+			u132_hcd_giveback_urb(u132, endp, urb,
+				cc_to_error[condition_code]);
+			return;
+		}
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_configure_empty_recv(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_configure_setup_sent(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	u8 address = u132->addr[endp->usb_addr].address;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		if (usb_pipein(urb->pipe)) {
+			int retval;
+			struct u132_ring *ring = endp->ring;
+			mutex_unlock(&u132->scheduler_lock);
+			retval = usb_ftdi_elan_edset_input(u132->platform_dev,
+				ring->number, endp, urb, address,
+				endp->usb_endp, 0,
+				u132_hcd_configure_input_recv);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		} else {
+			int retval;
+			struct u132_ring *ring = endp->ring;
+			mutex_unlock(&u132->scheduler_lock);
+			retval = usb_ftdi_elan_edset_input(u132->platform_dev,
+				ring->number, endp, urb, address,
+				endp->usb_endp, 0,
+				u132_hcd_configure_empty_recv);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		}
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_enumeration_empty_recv(void *data, struct urb *urb,
+	u8 *buf, int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	u8 address = u132->addr[endp->usb_addr].address;
+	struct u132_udev *udev = &u132->udev[address];
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		u132->addr[0].address = 0;
+		endp->usb_addr = udev->usb_addr;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_enumeration_address_sent(void *data, struct urb *urb,
+	u8 *buf, int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		int retval;
+		struct u132_ring *ring = endp->ring;
+		mutex_unlock(&u132->scheduler_lock);
+		retval = usb_ftdi_elan_edset_input(u132->platform_dev,
+			ring->number, endp, urb, 0, endp->usb_endp, 0,
+			u132_hcd_enumeration_empty_recv);
+		if (retval != 0)
+			u132_hcd_giveback_urb(u132, endp, urb, retval);
+		return;
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_initial_empty_sent(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_initial_input_recv(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	u8 address = u132->addr[endp->usb_addr].address;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		int retval;
+		struct u132_ring *ring = endp->ring;
+		u8 *u = urb->transfer_buffer;
+		u8 *b = buf;
+		int L = len;
+
+		while (L-- > 0)
+			*u++ = *b++;
+
+		urb->actual_length = len;
+		mutex_unlock(&u132->scheduler_lock);
+		retval = usb_ftdi_elan_edset_empty(u132->platform_dev,
+			ring->number, endp, urb, address, endp->usb_endp, 0x3,
+			u132_hcd_initial_empty_sent);
+		if (retval != 0)
+			u132_hcd_giveback_urb(u132, endp, urb, retval);
+		return;
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+static void u132_hcd_initial_setup_sent(void *data, struct urb *urb, u8 *buf,
+	int len, int toggle_bits, int error_count, int condition_code,
+	int repeat_number, int halted, int skipped, int actual, int non_null)
+{
+	struct u132_endp *endp = data;
+	struct u132 *u132 = endp->u132;
+	u8 address = u132->addr[endp->usb_addr].address;
+	mutex_lock(&u132->scheduler_lock);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (endp->dequeueing) {
+		endp->dequeueing = 0;
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
+		return;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
+		return;
+	} else if (!urb->unlinked) {
+		int retval;
+		struct u132_ring *ring = endp->ring;
+		mutex_unlock(&u132->scheduler_lock);
+		retval = usb_ftdi_elan_edset_input(u132->platform_dev,
+			ring->number, endp, urb, address, endp->usb_endp, 0,
+			u132_hcd_initial_input_recv);
+		if (retval != 0)
+			u132_hcd_giveback_urb(u132, endp, urb, retval);
+		return;
+	} else {
+		dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
+				"unlinked=%d\n", urb, urb->unlinked);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_hcd_giveback_urb(u132, endp, urb, 0);
+		return;
+	}
+}
+
+/*
+* this work function is only executed from the work queue
+*
+*/
+static void u132_hcd_ring_work_scheduler(struct work_struct *work)
+{
+	struct u132_ring *ring =
+		container_of(work, struct u132_ring, scheduler.work);
+	struct u132 *u132 = ring->u132;
+	mutex_lock(&u132->scheduler_lock);
+	if (ring->in_use) {
+		mutex_unlock(&u132->scheduler_lock);
+		u132_ring_put_kref(u132, ring);
+		return;
+	} else if (ring->curr_endp) {
+		struct u132_endp *endp, *last_endp = ring->curr_endp;
+		unsigned long wakeup = 0;
+		list_for_each_entry(endp, &last_endp->endp_ring, endp_ring) {
+			if (endp->queue_next == endp->queue_last) {
+			} else if ((endp->delayed == 0)
+				|| time_after_eq(jiffies, endp->jiffies)) {
+				ring->curr_endp = endp;
+				u132_endp_cancel_work(u132, last_endp);
+				u132_endp_queue_work(u132, last_endp, 0);
+				mutex_unlock(&u132->scheduler_lock);
+				u132_ring_put_kref(u132, ring);
+				return;
+			} else {
+				unsigned long delta = endp->jiffies - jiffies;
+				if (delta > wakeup)
+					wakeup = delta;
+			}
+		}
+		if (last_endp->queue_next == last_endp->queue_last) {
+		} else if ((last_endp->delayed == 0) || time_after_eq(jiffies,
+			last_endp->jiffies)) {
+			u132_endp_cancel_work(u132, last_endp);
+			u132_endp_queue_work(u132, last_endp, 0);
+			mutex_unlock(&u132->scheduler_lock);
+			u132_ring_put_kref(u132, ring);
+			return;
+		} else {
+			unsigned long delta = last_endp->jiffies - jiffies;
+			if (delta > wakeup)
+				wakeup = delta;
+		}
+		if (wakeup > 0) {
+			u132_ring_requeue_work(u132, ring, wakeup);
+			mutex_unlock(&u132->scheduler_lock);
+			return;
+		} else {
+			mutex_unlock(&u132->scheduler_lock);
+			u132_ring_put_kref(u132, ring);
+			return;
+		}
+	} else {
+		mutex_unlock(&u132->scheduler_lock);
+		u132_ring_put_kref(u132, ring);
+		return;
+	}
+}
+
+static void u132_hcd_endp_work_scheduler(struct work_struct *work)
+{
+	struct u132_ring *ring;
+	struct u132_endp *endp =
+		container_of(work, struct u132_endp, scheduler.work);
+	struct u132 *u132 = endp->u132;
+	mutex_lock(&u132->scheduler_lock);
+	ring = endp->ring;
+	if (endp->edset_flush) {
+		endp->edset_flush = 0;
+		if (endp->dequeueing)
+			usb_ftdi_elan_edset_flush(u132->platform_dev,
+				ring->number, endp);
+		mutex_unlock(&u132->scheduler_lock);
+		u132_endp_put_kref(u132, endp);
+		return;
+	} else if (endp->active) {
+		mutex_unlock(&u132->scheduler_lock);
+		u132_endp_put_kref(u132, endp);
+		return;
+	} else if (ring->in_use) {
+		mutex_unlock(&u132->scheduler_lock);
+		u132_endp_put_kref(u132, endp);
+		return;
+	} else if (endp->queue_next == endp->queue_last) {
+		mutex_unlock(&u132->scheduler_lock);
+		u132_endp_put_kref(u132, endp);
+		return;
+	} else if (endp->pipetype == PIPE_INTERRUPT) {
+		u8 address = u132->addr[endp->usb_addr].address;
+		if (ring->in_use) {
+			mutex_unlock(&u132->scheduler_lock);
+			u132_endp_put_kref(u132, endp);
+			return;
+		} else {
+			int retval;
+			struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
+				endp->queue_next];
+			endp->active = 1;
+			ring->curr_endp = endp;
+			ring->in_use = 1;
+			mutex_unlock(&u132->scheduler_lock);
+			retval = edset_single(u132, ring, endp, urb, address,
+				endp->toggle_bits, u132_hcd_interrupt_recv);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		}
+	} else if (endp->pipetype == PIPE_CONTROL) {
+		u8 address = u132->addr[endp->usb_addr].address;
+		if (ring->in_use) {
+			mutex_unlock(&u132->scheduler_lock);
+			u132_endp_put_kref(u132, endp);
+			return;
+		} else if (address == 0) {
+			int retval;
+			struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
+				endp->queue_next];
+			endp->active = 1;
+			ring->curr_endp = endp;
+			ring->in_use = 1;
+			mutex_unlock(&u132->scheduler_lock);
+			retval = edset_setup(u132, ring, endp, urb, address,
+				0x2, u132_hcd_initial_setup_sent);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		} else if (endp->usb_addr == 0) {
+			int retval;
+			struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
+				endp->queue_next];
+			endp->active = 1;
+			ring->curr_endp = endp;
+			ring->in_use = 1;
+			mutex_unlock(&u132->scheduler_lock);
+			retval = edset_setup(u132, ring, endp, urb, 0, 0x2,
+				u132_hcd_enumeration_address_sent);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		} else {
+			int retval;
+			struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
+				endp->queue_next];
+			address = u132->addr[endp->usb_addr].address;
+			endp->active = 1;
+			ring->curr_endp = endp;
+			ring->in_use = 1;
+			mutex_unlock(&u132->scheduler_lock);
+			retval = edset_setup(u132, ring, endp, urb, address,
+				0x2, u132_hcd_configure_setup_sent);
+			if (retval != 0)
+				u132_hcd_giveback_urb(u132, endp, urb, retval);
+			return;
+		}
+	} else {
+		if (endp->input) {
+			u8 address = u132->addr[endp->usb_addr].address;
+			if (ring->in_use) {
+				mutex_unlock(&u132->scheduler_lock);
+				u132_endp_put_kref(u132, endp);
+				return;
+			} else {
+				int retval;
+				struct urb *urb = endp->urb_list[
+					ENDP_QUEUE_MASK & endp->queue_next];
+				endp->active = 1;
+				ring->curr_endp = endp;
+				ring->in_use = 1;
+				mutex_unlock(&u132->scheduler_lock);
+				retval = edset_input(u132, ring, endp, urb,
+					address, endp->toggle_bits,
+					u132_hcd_bulk_input_recv);
+				if (retval == 0) {
+				} else
+					u132_hcd_giveback_urb(u132, endp, urb,
+						retval);
+				return;
+			}
+		} else {	/* output pipe */
+			u8 address = u132->addr[endp->usb_addr].address;
+			if (ring->in_use) {
+				mutex_unlock(&u132->scheduler_lock);
+				u132_endp_put_kref(u132, endp);
+				return;
+			} else {
+				int retval;
+				struct urb *urb = endp->urb_list[
+					ENDP_QUEUE_MASK & endp->queue_next];
+				endp->active = 1;
+				ring->curr_endp = endp;
+				ring->in_use = 1;
+				mutex_unlock(&u132->scheduler_lock);
+				retval = edset_output(u132, ring, endp, urb,
+					address, endp->toggle_bits,
+					u132_hcd_bulk_output_sent);
+				if (retval == 0) {
+				} else
+					u132_hcd_giveback_urb(u132, endp, urb,
+						retval);
+				return;
+			}
+		}
+	}
+}
+#ifdef CONFIG_PM
+
+static void port_power(struct u132 *u132, int pn, int is_on)
+{
+	u132->port[pn].power = is_on;
+}
+
+#endif
+
+static void u132_power(struct u132 *u132, int is_on)
+{
+	struct usb_hcd *hcd = u132_to_hcd(u132)
+		;	/* hub is inactive unless the port is powered */
+	if (is_on) {
+		if (u132->power)
+			return;
+		u132->power = 1;
+	} else {
+		u132->power = 0;
+		hcd->state = HC_STATE_HALT;
+	}
+}
+
+static int u132_periodic_reinit(struct u132 *u132)
+{
+	int retval;
+	u32 fi = u132->hc_fminterval & 0x03fff;
+	u32 fit;
+	u32 fminterval;
+	retval = u132_read_pcimem(u132, fminterval, &fminterval);
+	if (retval)
+		return retval;
+	fit = fminterval & FIT;
+	retval = u132_write_pcimem(u132, fminterval,
+		(fit ^ FIT) | u132->hc_fminterval);
+	if (retval)
+		return retval;
+	return u132_write_pcimem(u132, periodicstart,
+	       ((9 * fi) / 10) & 0x3fff);
+}
+
+static char *hcfs2string(int state)
+{
+	switch (state) {
+	case OHCI_USB_RESET:
+		return "reset";
+	case OHCI_USB_RESUME:
+		return "resume";
+	case OHCI_USB_OPER:
+		return "operational";
+	case OHCI_USB_SUSPEND:
+		return "suspend";
+	}
+	return "?";
+}
+
+static int u132_init(struct u132 *u132)
+{
+	int retval;
+	u32 control;
+	u132_disable(u132);
+	u132->next_statechange = jiffies;
+	retval = u132_write_pcimem(u132, intrdisable, OHCI_INTR_MIE);
+	if (retval)
+		return retval;
+	retval = u132_read_pcimem(u132, control, &control);
+	if (retval)
+		return retval;
+	if (u132->num_ports == 0) {
+		u32 rh_a = -1;
+		retval = u132_read_pcimem(u132, roothub.a, &rh_a);
+		if (retval)
+			return retval;
+		u132->num_ports = rh_a & RH_A_NDP;
+		retval = read_roothub_info(u132);
+		if (retval)
+			return retval;
+	}
+	if (u132->num_ports > MAX_U132_PORTS)
+		return -EINVAL;
+
+	return 0;
+}
+
+
+/* Start an OHCI controller, set the BUS operational
+* resets USB and controller
+* enable interrupts
+*/
+static int u132_run(struct u132 *u132)
+{
+	int retval;
+	u32 control;
+	u32 status;
+	u32 fminterval;
+	u32 periodicstart;
+	u32 cmdstatus;
+	u32 roothub_a;
+	int mask = OHCI_INTR_INIT;
+	int first = u132->hc_fminterval == 0;
+	int sleep_time = 0;
+	int reset_timeout = 30;	/* ... allow extra time */
+	u132_disable(u132);
+	if (first) {
+		u32 temp;
+		retval = u132_read_pcimem(u132, fminterval, &temp);
+		if (retval)
+			return retval;
+		u132->hc_fminterval = temp & 0x3fff;
+		u132->hc_fminterval |= FSMP(u132->hc_fminterval) << 16;
+	}
+	retval = u132_read_pcimem(u132, control, &u132->hc_control);
+	if (retval)
+		return retval;
+	dev_info(&u132->platform_dev->dev, "resetting from state '%s', control "
+		"= %08X\n", hcfs2string(u132->hc_control & OHCI_CTRL_HCFS),
+		u132->hc_control);
+	switch (u132->hc_control & OHCI_CTRL_HCFS) {
+	case OHCI_USB_OPER:
+		sleep_time = 0;
+		break;
+	case OHCI_USB_SUSPEND:
+	case OHCI_USB_RESUME:
+		u132->hc_control &= OHCI_CTRL_RWC;
+		u132->hc_control |= OHCI_USB_RESUME;
+		sleep_time = 10;
+		break;
+	default:
+		u132->hc_control &= OHCI_CTRL_RWC;
+		u132->hc_control |= OHCI_USB_RESET;
+		sleep_time = 50;
+		break;
+	}
+	retval = u132_write_pcimem(u132, control, u132->hc_control);
+	if (retval)
+		return retval;
+	retval = u132_read_pcimem(u132, control, &control);
+	if (retval)
+		return retval;
+	msleep(sleep_time);
+	retval = u132_read_pcimem(u132, roothub.a, &roothub_a);
+	if (retval)
+		return retval;
+	if (!(roothub_a & RH_A_NPS)) {
+		int temp;	/* power down each port */
+		for (temp = 0; temp < u132->num_ports; temp++) {
+			retval = u132_write_pcimem(u132,
+				roothub.portstatus[temp], RH_PS_LSDA);
+			if (retval)
+				return retval;
+		}
+	}
+	retval = u132_read_pcimem(u132, control, &control);
+	if (retval)
+		return retval;
+retry:
+	retval = u132_read_pcimem(u132, cmdstatus, &status);
+	if (retval)
+		return retval;
+	retval = u132_write_pcimem(u132, cmdstatus, OHCI_HCR);
+	if (retval)
+		return retval;
+extra:	{
+		retval = u132_read_pcimem(u132, cmdstatus, &status);
+		if (retval)
+			return retval;
+		if (0 != (status & OHCI_HCR)) {
+			if (--reset_timeout == 0) {
+				dev_err(&u132->platform_dev->dev, "USB HC reset"
+					" timed out!\n");
+				return -ENODEV;
+			} else {
+				msleep(5);
+				goto extra;
+			}
+		}
+	}
+	if (u132->flags & OHCI_QUIRK_INITRESET) {
+		retval = u132_write_pcimem(u132, control, u132->hc_control);
+		if (retval)
+			return retval;
+		retval = u132_read_pcimem(u132, control, &control);
+		if (retval)
+			return retval;
+	}
+	retval = u132_write_pcimem(u132, ed_controlhead, 0x00000000);
+	if (retval)
+		return retval;
+	retval = u132_write_pcimem(u132, ed_bulkhead, 0x11000000);
+	if (retval)
+		return retval;
+	retval = u132_write_pcimem(u132, hcca, 0x00000000);
+	if (retval)
+		return retval;
+	retval = u132_periodic_reinit(u132);
+	if (retval)
+		return retval;
+	retval = u132_read_pcimem(u132, fminterval, &fminterval);
+	if (retval)
+		return retval;
+	retval = u132_read_pcimem(u132, periodicstart, &periodicstart);
+	if (retval)
+		return retval;
+	if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) {
+		if (!(u132->flags & OHCI_QUIRK_INITRESET)) {
+			u132->flags |= OHCI_QUIRK_INITRESET;
+			goto retry;
+		} else
+			dev_err(&u132->platform_dev->dev, "init err(%08x %04x)"
+				"\n", fminterval, periodicstart);
+	}			/* start controller operations */
+	u132->hc_control &= OHCI_CTRL_RWC;
+	u132->hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER;
+	retval = u132_write_pcimem(u132, control, u132->hc_control);
+	if (retval)
+		return retval;
+	retval = u132_write_pcimem(u132, cmdstatus, OHCI_BLF);
+	if (retval)
+		return retval;
+	retval = u132_read_pcimem(u132, cmdstatus, &cmdstatus);
+	if (retval)
+		return retval;
+	retval = u132_read_pcimem(u132, control, &control);
+	if (retval)
+		return retval;
+	u132_to_hcd(u132)->state = HC_STATE_RUNNING;
+	retval = u132_write_pcimem(u132, roothub.status, RH_HS_DRWE);
+	if (retval)
+		return retval;
+	retval = u132_write_pcimem(u132, intrstatus, mask);
+	if (retval)
+		return retval;
+	retval = u132_write_pcimem(u132, intrdisable,
+		OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO |
+		OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH |
+		OHCI_INTR_SO);
+	if (retval)
+		return retval;	/* handle root hub init quirks ... */
+	retval = u132_read_pcimem(u132, roothub.a, &roothub_a);
+	if (retval)
+		return retval;
+	roothub_a &= ~(RH_A_PSM | RH_A_OCPM);
+	if (u132->flags & OHCI_QUIRK_SUPERIO) {
+		roothub_a |= RH_A_NOCP;
+		roothub_a &= ~(RH_A_POTPGT | RH_A_NPS);
+		retval = u132_write_pcimem(u132, roothub.a, roothub_a);
+		if (retval)
+			return retval;
+	} else if ((u132->flags & OHCI_QUIRK_AMD756) || distrust_firmware) {
+		roothub_a |= RH_A_NPS;
+		retval = u132_write_pcimem(u132, roothub.a, roothub_a);
+		if (retval)
+			return retval;
+	}
+	retval = u132_write_pcimem(u132, roothub.status, RH_HS_LPSC);
+	if (retval)
+		return retval;
+	retval = u132_write_pcimem(u132, roothub.b,
+		(roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM);
+	if (retval)
+		return retval;
+	retval = u132_read_pcimem(u132, control, &control);
+	if (retval)
+		return retval;
+	mdelay((roothub_a >> 23) & 0x1fe);
+	u132_to_hcd(u132)->state = HC_STATE_RUNNING;
+	return 0;
+}
+
+static void u132_hcd_stop(struct usb_hcd *hcd)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "u132 device %p(hcd=%p) has b"
+			"een removed %d\n", u132, hcd, u132->going);
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
+			"ed\n", hcd);
+	} else {
+		mutex_lock(&u132->sw_lock);
+		msleep(100);
+		u132_power(u132, 0);
+		mutex_unlock(&u132->sw_lock);
+	}
+}
+
+static int u132_hcd_start(struct usb_hcd *hcd)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else if (hcd->self.controller) {
+		int retval;
+		struct platform_device *pdev =
+			to_platform_device(hcd->self.controller);
+		u16 vendor = ((struct u132_platform_data *)
+			dev_get_platdata(&pdev->dev))->vendor;
+		u16 device = ((struct u132_platform_data *)
+			dev_get_platdata(&pdev->dev))->device;
+		mutex_lock(&u132->sw_lock);
+		msleep(10);
+		if (vendor == PCI_VENDOR_ID_AMD && device == 0x740c) {
+			u132->flags = OHCI_QUIRK_AMD756;
+		} else if (vendor == PCI_VENDOR_ID_OPTI && device == 0xc861) {
+			dev_err(&u132->platform_dev->dev, "WARNING: OPTi workar"
+				"ounds unavailable\n");
+		} else if (vendor == PCI_VENDOR_ID_COMPAQ && device == 0xa0f8)
+			u132->flags |= OHCI_QUIRK_ZFMICRO;
+		retval = u132_run(u132);
+		if (retval) {
+			u132_disable(u132);
+			u132->going = 1;
+		}
+		msleep(100);
+		mutex_unlock(&u132->sw_lock);
+		return retval;
+	} else {
+		dev_err(&u132->platform_dev->dev, "platform_device missing\n");
+		return -ENODEV;
+	}
+}
+
+static int u132_hcd_reset(struct usb_hcd *hcd)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else {
+		int retval;
+		mutex_lock(&u132->sw_lock);
+		retval = u132_init(u132);
+		if (retval) {
+			u132_disable(u132);
+			u132->going = 1;
+		}
+		mutex_unlock(&u132->sw_lock);
+		return retval;
+	}
+}
+
+static int create_endpoint_and_queue_int(struct u132 *u132,
+	struct u132_udev *udev, struct urb *urb,
+	struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp, u8 address,
+	gfp_t mem_flags)
+{
+	struct u132_ring *ring;
+	unsigned long irqs;
+	int rc;
+	u8 endp_number;
+	struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
+
+	if (!endp)
+		return -ENOMEM;
+
+	spin_lock_init(&endp->queue_lock.slock);
+	spin_lock_irqsave(&endp->queue_lock.slock, irqs);
+	rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
+	if (rc) {
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		kfree(endp);
+		return rc;
+	}
+
+	endp_number = ++u132->num_endpoints;
+	urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
+	INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
+	INIT_LIST_HEAD(&endp->urb_more);
+	ring = endp->ring = &u132->ring[0];
+	if (ring->curr_endp) {
+		list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
+	} else {
+		INIT_LIST_HEAD(&endp->endp_ring);
+		ring->curr_endp = endp;
+	}
+	ring->length += 1;
+	endp->dequeueing = 0;
+	endp->edset_flush = 0;
+	endp->active = 0;
+	endp->delayed = 0;
+	endp->endp_number = endp_number;
+	endp->u132 = u132;
+	endp->hep = urb->ep;
+	endp->pipetype = usb_pipetype(urb->pipe);
+	u132_endp_init_kref(u132, endp);
+	if (usb_pipein(urb->pipe)) {
+		endp->toggle_bits = 0x2;
+		usb_settoggle(udev->usb_device, usb_endp, 0, 0);
+		endp->input = 1;
+		endp->output = 0;
+		udev->endp_number_in[usb_endp] = endp_number;
+		u132_udev_get_kref(u132, udev);
+	} else {
+		endp->toggle_bits = 0x2;
+		usb_settoggle(udev->usb_device, usb_endp, 1, 0);
+		endp->input = 0;
+		endp->output = 1;
+		udev->endp_number_out[usb_endp] = endp_number;
+		u132_udev_get_kref(u132, udev);
+	}
+	urb->hcpriv = u132;
+	endp->delayed = 1;
+	endp->jiffies = jiffies + msecs_to_jiffies(urb->interval);
+	endp->udev_number = address;
+	endp->usb_addr = usb_addr;
+	endp->usb_endp = usb_endp;
+	endp->queue_size = 1;
+	endp->queue_last = 0;
+	endp->queue_next = 0;
+	endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
+	spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+	u132_endp_queue_work(u132, endp, msecs_to_jiffies(urb->interval));
+	return 0;
+}
+
+static int queue_int_on_old_endpoint(struct u132 *u132,
+	struct u132_udev *udev, struct urb *urb,
+	struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
+	u8 usb_endp, u8 address)
+{
+	urb->hcpriv = u132;
+	endp->delayed = 1;
+	endp->jiffies = jiffies + msecs_to_jiffies(urb->interval);
+	if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
+		endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
+	} else {
+		struct u132_urbq *urbq = kmalloc(sizeof(struct u132_urbq),
+			GFP_ATOMIC);
+		if (urbq == NULL) {
+			endp->queue_size -= 1;
+			return -ENOMEM;
+		} else {
+			list_add_tail(&urbq->urb_more, &endp->urb_more);
+			urbq->urb = urb;
+		}
+	}
+	return 0;
+}
+
+static int create_endpoint_and_queue_bulk(struct u132 *u132,
+	struct u132_udev *udev, struct urb *urb,
+	struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp, u8 address,
+	gfp_t mem_flags)
+{
+	int ring_number;
+	struct u132_ring *ring;
+	unsigned long irqs;
+	int rc;
+	u8 endp_number;
+	struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
+
+	if (!endp)
+		return -ENOMEM;
+
+	spin_lock_init(&endp->queue_lock.slock);
+	spin_lock_irqsave(&endp->queue_lock.slock, irqs);
+	rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
+	if (rc) {
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		kfree(endp);
+		return rc;
+	}
+
+	endp_number = ++u132->num_endpoints;
+	urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
+	INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
+	INIT_LIST_HEAD(&endp->urb_more);
+	endp->dequeueing = 0;
+	endp->edset_flush = 0;
+	endp->active = 0;
+	endp->delayed = 0;
+	endp->endp_number = endp_number;
+	endp->u132 = u132;
+	endp->hep = urb->ep;
+	endp->pipetype = usb_pipetype(urb->pipe);
+	u132_endp_init_kref(u132, endp);
+	if (usb_pipein(urb->pipe)) {
+		endp->toggle_bits = 0x2;
+		usb_settoggle(udev->usb_device, usb_endp, 0, 0);
+		ring_number = 3;
+		endp->input = 1;
+		endp->output = 0;
+		udev->endp_number_in[usb_endp] = endp_number;
+		u132_udev_get_kref(u132, udev);
+	} else {
+		endp->toggle_bits = 0x2;
+		usb_settoggle(udev->usb_device, usb_endp, 1, 0);
+		ring_number = 2;
+		endp->input = 0;
+		endp->output = 1;
+		udev->endp_number_out[usb_endp] = endp_number;
+		u132_udev_get_kref(u132, udev);
+	}
+	ring = endp->ring = &u132->ring[ring_number - 1];
+	if (ring->curr_endp) {
+		list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
+	} else {
+		INIT_LIST_HEAD(&endp->endp_ring);
+		ring->curr_endp = endp;
+	}
+	ring->length += 1;
+	urb->hcpriv = u132;
+	endp->udev_number = address;
+	endp->usb_addr = usb_addr;
+	endp->usb_endp = usb_endp;
+	endp->queue_size = 1;
+	endp->queue_last = 0;
+	endp->queue_next = 0;
+	endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
+	spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+	u132_endp_queue_work(u132, endp, 0);
+	return 0;
+}
+
+static int queue_bulk_on_old_endpoint(struct u132 *u132, struct u132_udev *udev,
+	struct urb *urb,
+	struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
+	u8 usb_endp, u8 address)
+{
+	urb->hcpriv = u132;
+	if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
+		endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
+	} else {
+		struct u132_urbq *urbq = kmalloc(sizeof(struct u132_urbq),
+			GFP_ATOMIC);
+		if (urbq == NULL) {
+			endp->queue_size -= 1;
+			return -ENOMEM;
+		} else {
+			list_add_tail(&urbq->urb_more, &endp->urb_more);
+			urbq->urb = urb;
+		}
+	}
+	return 0;
+}
+
+static int create_endpoint_and_queue_control(struct u132 *u132,
+	struct urb *urb,
+	struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp,
+	gfp_t mem_flags)
+{
+	struct u132_ring *ring;
+	unsigned long irqs;
+	int rc;
+	u8 endp_number;
+	struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
+
+	if (!endp)
+		return -ENOMEM;
+
+	spin_lock_init(&endp->queue_lock.slock);
+	spin_lock_irqsave(&endp->queue_lock.slock, irqs);
+	rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
+	if (rc) {
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		kfree(endp);
+		return rc;
+	}
+
+	endp_number = ++u132->num_endpoints;
+	urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
+	INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
+	INIT_LIST_HEAD(&endp->urb_more);
+	ring = endp->ring = &u132->ring[0];
+	if (ring->curr_endp) {
+		list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
+	} else {
+		INIT_LIST_HEAD(&endp->endp_ring);
+		ring->curr_endp = endp;
+	}
+	ring->length += 1;
+	endp->dequeueing = 0;
+	endp->edset_flush = 0;
+	endp->active = 0;
+	endp->delayed = 0;
+	endp->endp_number = endp_number;
+	endp->u132 = u132;
+	endp->hep = urb->ep;
+	u132_endp_init_kref(u132, endp);
+	u132_endp_get_kref(u132, endp);
+	if (usb_addr == 0) {
+		u8 address = u132->addr[usb_addr].address;
+		struct u132_udev *udev = &u132->udev[address];
+		endp->udev_number = address;
+		endp->usb_addr = usb_addr;
+		endp->usb_endp = usb_endp;
+		endp->input = 1;
+		endp->output = 1;
+		endp->pipetype = usb_pipetype(urb->pipe);
+		u132_udev_init_kref(u132, udev);
+		u132_udev_get_kref(u132, udev);
+		udev->endp_number_in[usb_endp] = endp_number;
+		udev->endp_number_out[usb_endp] = endp_number;
+		urb->hcpriv = u132;
+		endp->queue_size = 1;
+		endp->queue_last = 0;
+		endp->queue_next = 0;
+		endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		u132_endp_queue_work(u132, endp, 0);
+		return 0;
+	} else {		/*(usb_addr > 0) */
+		u8 address = u132->addr[usb_addr].address;
+		struct u132_udev *udev = &u132->udev[address];
+		endp->udev_number = address;
+		endp->usb_addr = usb_addr;
+		endp->usb_endp = usb_endp;
+		endp->input = 1;
+		endp->output = 1;
+		endp->pipetype = usb_pipetype(urb->pipe);
+		u132_udev_get_kref(u132, udev);
+		udev->enumeration = 2;
+		udev->endp_number_in[usb_endp] = endp_number;
+		udev->endp_number_out[usb_endp] = endp_number;
+		urb->hcpriv = u132;
+		endp->queue_size = 1;
+		endp->queue_last = 0;
+		endp->queue_next = 0;
+		endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		u132_endp_queue_work(u132, endp, 0);
+		return 0;
+	}
+}
+
+static int queue_control_on_old_endpoint(struct u132 *u132,
+	struct urb *urb,
+	struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
+	u8 usb_endp)
+{
+	if (usb_addr == 0) {
+		if (usb_pipein(urb->pipe)) {
+			urb->hcpriv = u132;
+			if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
+				endp->urb_list[ENDP_QUEUE_MASK &
+					endp->queue_last++] = urb;
+			} else {
+				struct u132_urbq *urbq =
+					kmalloc(sizeof(struct u132_urbq),
+					GFP_ATOMIC);
+				if (urbq == NULL) {
+					endp->queue_size -= 1;
+					return -ENOMEM;
+				} else {
+					list_add_tail(&urbq->urb_more,
+						&endp->urb_more);
+					urbq->urb = urb;
+				}
+			}
+			return 0;
+		} else {	/* usb_pipeout(urb->pipe) */
+			struct u132_addr *addr = &u132->addr[usb_dev->devnum];
+			int I = MAX_U132_UDEVS;
+			int i = 0;
+			while (--I > 0) {
+				struct u132_udev *udev = &u132->udev[++i];
+				if (udev->usb_device) {
+					continue;
+				} else {
+					udev->enumeration = 1;
+					u132->addr[0].address = i;
+					endp->udev_number = i;
+					udev->udev_number = i;
+					udev->usb_addr = usb_dev->devnum;
+					u132_udev_init_kref(u132, udev);
+					udev->endp_number_in[usb_endp] =
+						endp->endp_number;
+					u132_udev_get_kref(u132, udev);
+					udev->endp_number_out[usb_endp] =
+						endp->endp_number;
+					udev->usb_device = usb_dev;
+					((u8 *) (urb->setup_packet))[2] =
+						addr->address = i;
+					u132_udev_get_kref(u132, udev);
+					break;
+				}
+			}
+			if (I == 0) {
+				dev_err(&u132->platform_dev->dev, "run out of d"
+					"evice space\n");
+				return -EINVAL;
+			}
+			urb->hcpriv = u132;
+			if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
+				endp->urb_list[ENDP_QUEUE_MASK &
+					endp->queue_last++] = urb;
+			} else {
+				struct u132_urbq *urbq =
+					kmalloc(sizeof(struct u132_urbq),
+					GFP_ATOMIC);
+				if (urbq == NULL) {
+					endp->queue_size -= 1;
+					return -ENOMEM;
+				} else {
+					list_add_tail(&urbq->urb_more,
+						&endp->urb_more);
+					urbq->urb = urb;
+				}
+			}
+			return 0;
+		}
+	} else {		/*(usb_addr > 0) */
+		u8 address = u132->addr[usb_addr].address;
+		struct u132_udev *udev = &u132->udev[address];
+		urb->hcpriv = u132;
+		if (udev->enumeration != 2)
+			udev->enumeration = 2;
+		if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
+			endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
+				urb;
+		} else {
+			struct u132_urbq *urbq =
+				kmalloc(sizeof(struct u132_urbq), GFP_ATOMIC);
+			if (urbq == NULL) {
+				endp->queue_size -= 1;
+				return -ENOMEM;
+			} else {
+				list_add_tail(&urbq->urb_more, &endp->urb_more);
+				urbq->urb = urb;
+			}
+		}
+		return 0;
+	}
+}
+
+static int u132_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
+		gfp_t mem_flags)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (irqs_disabled()) {
+		if (gfpflags_allow_blocking(mem_flags)) {
+			printk(KERN_ERR "invalid context for function that might sleep\n");
+			return -EINVAL;
+		}
+	}
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed "
+				"urb=%p\n", urb);
+		return -ESHUTDOWN;
+	} else {
+		u8 usb_addr = usb_pipedevice(urb->pipe);
+		u8 usb_endp = usb_pipeendpoint(urb->pipe);
+		struct usb_device *usb_dev = urb->dev;
+		if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) {
+			u8 address = u132->addr[usb_addr].address;
+			struct u132_udev *udev = &u132->udev[address];
+			struct u132_endp *endp = urb->ep->hcpriv;
+			urb->actual_length = 0;
+			if (endp) {
+				unsigned long irqs;
+				int retval;
+				spin_lock_irqsave(&endp->queue_lock.slock,
+					irqs);
+				retval = usb_hcd_link_urb_to_ep(hcd, urb);
+				if (retval == 0) {
+					retval = queue_int_on_old_endpoint(
+							u132, udev, urb,
+							usb_dev, endp,
+							usb_addr, usb_endp,
+							address);
+					if (retval)
+						usb_hcd_unlink_urb_from_ep(
+	hcd, urb);
+				}
+				spin_unlock_irqrestore(&endp->queue_lock.slock,
+					irqs);
+				if (retval) {
+					return retval;
+				} else {
+					u132_endp_queue_work(u132, endp,
+						msecs_to_jiffies(urb->interval))
+						;
+					return 0;
+				}
+			} else if (u132->num_endpoints == MAX_U132_ENDPS) {
+				return -EINVAL;
+			} else {	/*(endp == NULL) */
+				return create_endpoint_and_queue_int(u132, udev,
+						urb, usb_dev, usb_addr,
+						usb_endp, address, mem_flags);
+			}
+		} else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
+			dev_err(&u132->platform_dev->dev, "the hardware does no"
+				"t support PIPE_ISOCHRONOUS\n");
+			return -EINVAL;
+		} else if (usb_pipetype(urb->pipe) == PIPE_BULK) {
+			u8 address = u132->addr[usb_addr].address;
+			struct u132_udev *udev = &u132->udev[address];
+			struct u132_endp *endp = urb->ep->hcpriv;
+			urb->actual_length = 0;
+			if (endp) {
+				unsigned long irqs;
+				int retval;
+				spin_lock_irqsave(&endp->queue_lock.slock,
+					irqs);
+				retval = usb_hcd_link_urb_to_ep(hcd, urb);
+				if (retval == 0) {
+					retval = queue_bulk_on_old_endpoint(
+							u132, udev, urb,
+							usb_dev, endp,
+							usb_addr, usb_endp,
+							address);
+					if (retval)
+						usb_hcd_unlink_urb_from_ep(
+	hcd, urb);
+				}
+				spin_unlock_irqrestore(&endp->queue_lock.slock,
+					irqs);
+				if (retval) {
+					return retval;
+				} else {
+					u132_endp_queue_work(u132, endp, 0);
+					return 0;
+				}
+			} else if (u132->num_endpoints == MAX_U132_ENDPS) {
+				return -EINVAL;
+			} else
+				return create_endpoint_and_queue_bulk(u132,
+					udev, urb, usb_dev, usb_addr,
+					usb_endp, address, mem_flags);
+		} else {
+			struct u132_endp *endp = urb->ep->hcpriv;
+			u16 urb_size = 8;
+			u8 *b = urb->setup_packet;
+			int i = 0;
+			char data[30 * 3 + 4];
+			char *d = data;
+			int m = (sizeof(data) - 1) / 3;
+			int l = 0;
+			data[0] = 0;
+			while (urb_size-- > 0) {
+				if (i > m) {
+				} else if (i++ < m) {
+					int w = sprintf(d, " %02X", *b++);
+					d += w;
+					l += w;
+				} else
+					d += sprintf(d, " ..");
+			}
+			if (endp) {
+				unsigned long irqs;
+				int retval;
+				spin_lock_irqsave(&endp->queue_lock.slock,
+					irqs);
+				retval = usb_hcd_link_urb_to_ep(hcd, urb);
+				if (retval == 0) {
+					retval = queue_control_on_old_endpoint(
+							u132, urb, usb_dev,
+							endp, usb_addr,
+							usb_endp);
+					if (retval)
+						usb_hcd_unlink_urb_from_ep(
+								hcd, urb);
+				}
+				spin_unlock_irqrestore(&endp->queue_lock.slock,
+					irqs);
+				if (retval) {
+					return retval;
+				} else {
+					u132_endp_queue_work(u132, endp, 0);
+					return 0;
+				}
+			} else if (u132->num_endpoints == MAX_U132_ENDPS) {
+				return -EINVAL;
+			} else
+				return create_endpoint_and_queue_control(u132,
+					urb, usb_dev, usb_addr, usb_endp,
+					mem_flags);
+		}
+	}
+}
+
+static int dequeue_from_overflow_chain(struct u132 *u132,
+	struct u132_endp *endp, struct urb *urb)
+{
+	struct u132_urbq *urbq;
+
+	list_for_each_entry(urbq, &endp->urb_more, urb_more) {
+		if (urbq->urb == urb) {
+			struct usb_hcd *hcd = u132_to_hcd(u132);
+			list_del(&urbq->urb_more);
+			endp->queue_size -= 1;
+			urb->error_count = 0;
+			usb_hcd_giveback_urb(hcd, urb, 0);
+			return 0;
+		} else
+			continue;
+	}
+	dev_err(&u132->platform_dev->dev, "urb=%p not found in endp[%d]=%p ring"
+		"[%d] %c%c usb_endp=%d usb_addr=%d size=%d next=%04X last=%04X"
+		"\n", urb, endp->endp_number, endp, endp->ring->number,
+		endp->input ? 'I' : ' ', endp->output ? 'O' : ' ',
+		endp->usb_endp, endp->usb_addr, endp->queue_size,
+		endp->queue_next, endp->queue_last);
+	return -EINVAL;
+}
+
+static int u132_endp_urb_dequeue(struct u132 *u132, struct u132_endp *endp,
+		struct urb *urb, int status)
+{
+	unsigned long irqs;
+	int rc;
+
+	spin_lock_irqsave(&endp->queue_lock.slock, irqs);
+	rc = usb_hcd_check_unlink_urb(u132_to_hcd(u132), urb, status);
+	if (rc) {
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		return rc;
+	}
+	if (endp->queue_size == 0) {
+		dev_err(&u132->platform_dev->dev, "urb=%p not found in endp[%d]"
+			"=%p ring[%d] %c%c usb_endp=%d usb_addr=%d\n", urb,
+			endp->endp_number, endp, endp->ring->number,
+			endp->input ? 'I' : ' ', endp->output ? 'O' : ' ',
+			endp->usb_endp, endp->usb_addr);
+		spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+		return -EINVAL;
+	}
+	if (urb == endp->urb_list[ENDP_QUEUE_MASK & endp->queue_next]) {
+		if (endp->active) {
+			endp->dequeueing = 1;
+			endp->edset_flush = 1;
+			u132_endp_queue_work(u132, endp, 0);
+			spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+			return 0;
+		} else {
+			spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+			u132_hcd_abandon_urb(u132, endp, urb, status);
+			return 0;
+		}
+	} else {
+		u16 queue_list = 0;
+		u16 queue_size = endp->queue_size;
+		u16 queue_scan = endp->queue_next;
+		struct urb **urb_slot = NULL;
+		while (++queue_list < ENDP_QUEUE_SIZE && --queue_size > 0) {
+			if (urb == endp->urb_list[ENDP_QUEUE_MASK &
+				++queue_scan]) {
+				urb_slot = &endp->urb_list[ENDP_QUEUE_MASK &
+					queue_scan];
+				break;
+			} else
+				continue;
+		}
+		while (++queue_list < ENDP_QUEUE_SIZE && --queue_size > 0) {
+			*urb_slot = endp->urb_list[ENDP_QUEUE_MASK &
+				++queue_scan];
+			urb_slot = &endp->urb_list[ENDP_QUEUE_MASK &
+				queue_scan];
+		}
+		if (urb_slot) {
+			struct usb_hcd *hcd = u132_to_hcd(u132);
+
+			usb_hcd_unlink_urb_from_ep(hcd, urb);
+			endp->queue_size -= 1;
+			if (list_empty(&endp->urb_more)) {
+				spin_unlock_irqrestore(&endp->queue_lock.slock,
+					irqs);
+			} else {
+				struct list_head *next = endp->urb_more.next;
+				struct u132_urbq *urbq = list_entry(next,
+					struct u132_urbq, urb_more);
+				list_del(next);
+				*urb_slot = urbq->urb;
+				spin_unlock_irqrestore(&endp->queue_lock.slock,
+					irqs);
+				kfree(urbq);
+			}
+			urb->error_count = 0;
+			usb_hcd_giveback_urb(hcd, urb, status);
+			return 0;
+		} else if (list_empty(&endp->urb_more)) {
+			dev_err(&u132->platform_dev->dev, "urb=%p not found in "
+				"endp[%d]=%p ring[%d] %c%c usb_endp=%d usb_addr"
+				"=%d size=%d next=%04X last=%04X\n", urb,
+				endp->endp_number, endp, endp->ring->number,
+				endp->input ? 'I' : ' ',
+				endp->output ? 'O' : ' ', endp->usb_endp,
+				endp->usb_addr, endp->queue_size,
+				endp->queue_next, endp->queue_last);
+			spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+			return -EINVAL;
+		} else {
+			int retval;
+
+			usb_hcd_unlink_urb_from_ep(u132_to_hcd(u132), urb);
+			retval = dequeue_from_overflow_chain(u132, endp,
+				urb);
+			spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
+			return retval;
+		}
+	}
+}
+
+static int u132_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 2) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else {
+		u8 usb_addr = usb_pipedevice(urb->pipe);
+		u8 usb_endp = usb_pipeendpoint(urb->pipe);
+		u8 address = u132->addr[usb_addr].address;
+		struct u132_udev *udev = &u132->udev[address];
+		if (usb_pipein(urb->pipe)) {
+			u8 endp_number = udev->endp_number_in[usb_endp];
+			struct u132_endp *endp = u132->endp[endp_number - 1];
+			return u132_endp_urb_dequeue(u132, endp, urb, status);
+		} else {
+			u8 endp_number = udev->endp_number_out[usb_endp];
+			struct u132_endp *endp = u132->endp[endp_number - 1];
+			return u132_endp_urb_dequeue(u132, endp, urb, status);
+		}
+	}
+}
+
+static void u132_endpoint_disable(struct usb_hcd *hcd,
+	struct usb_host_endpoint *hep)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 2) {
+		dev_err(&u132->platform_dev->dev, "u132 device %p(hcd=%p hep=%p"
+			") has been removed %d\n", u132, hcd, hep,
+			u132->going);
+	} else {
+		struct u132_endp *endp = hep->hcpriv;
+		if (endp)
+			u132_endp_put_kref(u132, endp);
+	}
+}
+
+static int u132_get_frame(struct usb_hcd *hcd)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else {
+		dev_err(&u132->platform_dev->dev, "TODO: u132_get_frame\n");
+		mdelay(100);
+		return 0;
+	}
+}
+
+static int u132_roothub_descriptor(struct u132 *u132,
+	struct usb_hub_descriptor *desc)
+{
+	int retval;
+	u16 temp;
+	u32 rh_a = -1;
+	u32 rh_b = -1;
+	retval = u132_read_pcimem(u132, roothub.a, &rh_a);
+	if (retval)
+		return retval;
+	desc->bDescriptorType = USB_DT_HUB;
+	desc->bPwrOn2PwrGood = (rh_a & RH_A_POTPGT) >> 24;
+	desc->bHubContrCurrent = 0;
+	desc->bNbrPorts = u132->num_ports;
+	temp = 1 + (u132->num_ports / 8);
+	desc->bDescLength = 7 + 2 * temp;
+	temp = HUB_CHAR_COMMON_LPSM | HUB_CHAR_COMMON_OCPM;
+	if (rh_a & RH_A_NPS)
+		temp |= HUB_CHAR_NO_LPSM;
+	if (rh_a & RH_A_PSM)
+		temp |= HUB_CHAR_INDV_PORT_LPSM;
+	if (rh_a & RH_A_NOCP)
+		temp |= HUB_CHAR_NO_OCPM;
+	else if (rh_a & RH_A_OCPM)
+		temp |= HUB_CHAR_INDV_PORT_OCPM;
+	desc->wHubCharacteristics = cpu_to_le16(temp);
+	retval = u132_read_pcimem(u132, roothub.b, &rh_b);
+	if (retval)
+		return retval;
+	memset(desc->u.hs.DeviceRemovable, 0xff,
+			sizeof(desc->u.hs.DeviceRemovable));
+	desc->u.hs.DeviceRemovable[0] = rh_b & RH_B_DR;
+	if (u132->num_ports > 7) {
+		desc->u.hs.DeviceRemovable[1] = (rh_b & RH_B_DR) >> 8;
+		desc->u.hs.DeviceRemovable[2] = 0xff;
+	} else
+		desc->u.hs.DeviceRemovable[1] = 0xff;
+	return 0;
+}
+
+static int u132_roothub_status(struct u132 *u132, __le32 *desc)
+{
+	u32 rh_status = -1;
+	int ret_status = u132_read_pcimem(u132, roothub.status, &rh_status);
+	*desc = cpu_to_le32(rh_status);
+	return ret_status;
+}
+
+static int u132_roothub_portstatus(struct u132 *u132, __le32 *desc, u16 wIndex)
+{
+	if (wIndex == 0 || wIndex > u132->num_ports) {
+		return -EINVAL;
+	} else {
+		int port = wIndex - 1;
+		u32 rh_portstatus = -1;
+		int ret_portstatus = u132_read_pcimem(u132,
+			roothub.portstatus[port], &rh_portstatus);
+		*desc = cpu_to_le32(rh_portstatus);
+		if (*(u16 *) (desc + 2)) {
+			dev_info(&u132->platform_dev->dev, "Port %d Status Chan"
+				"ge = %08X\n", port, *desc);
+		}
+		return ret_portstatus;
+	}
+}
+
+
+/* this timer value might be vendor-specific ... */
+#define PORT_RESET_HW_MSEC 10
+#define PORT_RESET_MSEC 10
+/* wrap-aware logic morphed from <linux/jiffies.h> */
+#define tick_before(t1, t2) ((s16)(((s16)(t1))-((s16)(t2))) < 0)
+static int u132_roothub_portreset(struct u132 *u132, int port_index)
+{
+	int retval;
+	u32 fmnumber;
+	u16 now;
+	u16 reset_done;
+	retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
+	if (retval)
+		return retval;
+	now = fmnumber;
+	reset_done = now + PORT_RESET_MSEC;
+	do {
+		u32 portstat;
+		do {
+			retval = u132_read_pcimem(u132,
+				roothub.portstatus[port_index], &portstat);
+			if (retval)
+				return retval;
+			if (RH_PS_PRS & portstat)
+				continue;
+			else
+				break;
+		} while (tick_before(now, reset_done));
+		if (RH_PS_PRS & portstat)
+			return -ENODEV;
+		if (RH_PS_CCS & portstat) {
+			if (RH_PS_PRSC & portstat) {
+				retval = u132_write_pcimem(u132,
+					roothub.portstatus[port_index],
+					RH_PS_PRSC);
+				if (retval)
+					return retval;
+			}
+		} else
+			break;	/* start the next reset,
+				sleep till it's probably done */
+		retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
+			 RH_PS_PRS);
+		if (retval)
+			return retval;
+		msleep(PORT_RESET_HW_MSEC);
+		retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
+		if (retval)
+			return retval;
+		now = fmnumber;
+	} while (tick_before(now, reset_done));
+	return 0;
+}
+
+static int u132_roothub_setportfeature(struct u132 *u132, u16 wValue,
+	u16 wIndex)
+{
+	if (wIndex == 0 || wIndex > u132->num_ports) {
+		return -EINVAL;
+	} else {
+		int port_index = wIndex - 1;
+		struct u132_port *port = &u132->port[port_index];
+		port->Status &= ~(1 << wValue);
+		switch (wValue) {
+		case USB_PORT_FEAT_SUSPEND:
+			return u132_write_pcimem(u132,
+			       roothub.portstatus[port_index], RH_PS_PSS);
+		case USB_PORT_FEAT_POWER:
+			return u132_write_pcimem(u132,
+			       roothub.portstatus[port_index], RH_PS_PPS);
+		case USB_PORT_FEAT_RESET:
+			return u132_roothub_portreset(u132, port_index);
+		default:
+			return -EPIPE;
+		}
+	}
+}
+
+static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
+	u16 wIndex)
+{
+	if (wIndex == 0 || wIndex > u132->num_ports) {
+		return -EINVAL;
+	} else {
+		int port_index = wIndex - 1;
+		u32 temp;
+		struct u132_port *port = &u132->port[port_index];
+		port->Status &= ~(1 << wValue);
+		switch (wValue) {
+		case USB_PORT_FEAT_ENABLE:
+			temp = RH_PS_CCS;
+			break;
+		case USB_PORT_FEAT_C_ENABLE:
+			temp = RH_PS_PESC;
+			break;
+		case USB_PORT_FEAT_SUSPEND:
+			temp = RH_PS_POCI;
+			if ((u132->hc_control & OHCI_CTRL_HCFS)
+				!= OHCI_USB_OPER) {
+				dev_err(&u132->platform_dev->dev, "TODO resume_"
+					"root_hub\n");
+			}
+			break;
+		case USB_PORT_FEAT_C_SUSPEND:
+			temp = RH_PS_PSSC;
+			break;
+		case USB_PORT_FEAT_POWER:
+			temp = RH_PS_LSDA;
+			break;
+		case USB_PORT_FEAT_C_CONNECTION:
+			temp = RH_PS_CSC;
+			break;
+		case USB_PORT_FEAT_C_OVER_CURRENT:
+			temp = RH_PS_OCIC;
+			break;
+		case USB_PORT_FEAT_C_RESET:
+			temp = RH_PS_PRSC;
+			break;
+		default:
+			return -EPIPE;
+		}
+		return u132_write_pcimem(u132, roothub.portstatus[port_index],
+		       temp);
+	}
+}
+
+
+/* the virtual root hub timer IRQ checks for hub status*/
+static int u132_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device hcd=%p has been remov"
+			"ed %d\n", hcd, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
+			"ed\n", hcd);
+		return -ESHUTDOWN;
+	} else {
+		int i, changed = 0, length = 1;
+		if (u132->flags & OHCI_QUIRK_AMD756) {
+			if ((u132->hc_roothub_a & RH_A_NDP) > MAX_ROOT_PORTS) {
+				dev_err(&u132->platform_dev->dev, "bogus NDP, r"
+					"ereads as NDP=%d\n",
+					u132->hc_roothub_a & RH_A_NDP);
+				goto done;
+			}
+		}
+		if (u132->hc_roothub_status & (RH_HS_LPSC | RH_HS_OCIC))
+			buf[0] = changed = 1;
+		else
+			buf[0] = 0;
+		if (u132->num_ports > 7) {
+			buf[1] = 0;
+			length++;
+		}
+		for (i = 0; i < u132->num_ports; i++) {
+			if (u132->hc_roothub_portstatus[i] & (RH_PS_CSC |
+				RH_PS_PESC | RH_PS_PSSC | RH_PS_OCIC |
+				RH_PS_PRSC)) {
+				changed = 1;
+				if (i < 7)
+					buf[0] |= 1 << (i + 1);
+				else
+					buf[1] |= 1 << (i - 7);
+				continue;
+			}
+			if (!(u132->hc_roothub_portstatus[i] & RH_PS_CCS))
+				continue;
+
+			if ((u132->hc_roothub_portstatus[i] & RH_PS_PSS))
+				continue;
+		}
+done:
+		return changed ? length : 0;
+	}
+}
+
+static int u132_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+	u16 wIndex, char *buf, u16 wLength)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else {
+		int retval = 0;
+		mutex_lock(&u132->sw_lock);
+		switch (typeReq) {
+		case ClearHubFeature:
+			switch (wValue) {
+			case C_HUB_OVER_CURRENT:
+			case C_HUB_LOCAL_POWER:
+				break;
+			default:
+				goto stall;
+			}
+			break;
+		case SetHubFeature:
+			switch (wValue) {
+			case C_HUB_OVER_CURRENT:
+			case C_HUB_LOCAL_POWER:
+				break;
+			default:
+				goto stall;
+			}
+			break;
+		case ClearPortFeature:{
+				retval = u132_roothub_clearportfeature(u132,
+					wValue, wIndex);
+				if (retval)
+					goto error;
+				break;
+			}
+		case GetHubDescriptor:{
+				retval = u132_roothub_descriptor(u132,
+					(struct usb_hub_descriptor *)buf);
+				if (retval)
+					goto error;
+				break;
+			}
+		case GetHubStatus:{
+				retval = u132_roothub_status(u132,
+					(__le32 *) buf);
+				if (retval)
+					goto error;
+				break;
+			}
+		case GetPortStatus:{
+				retval = u132_roothub_portstatus(u132,
+					(__le32 *) buf, wIndex);
+				if (retval)
+					goto error;
+				break;
+			}
+		case SetPortFeature:{
+				retval = u132_roothub_setportfeature(u132,
+					wValue, wIndex);
+				if (retval)
+					goto error;
+				break;
+			}
+		default:
+			goto stall;
+		error:
+			u132_disable(u132);
+			u132->going = 1;
+			break;
+		stall:
+			retval = -EPIPE;
+			break;
+		}
+		mutex_unlock(&u132->sw_lock);
+		return retval;
+	}
+}
+
+static int u132_start_port_reset(struct usb_hcd *hcd, unsigned port_num)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else
+		return 0;
+}
+
+
+#ifdef CONFIG_PM
+static int u132_bus_suspend(struct usb_hcd *hcd)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else
+		return 0;
+}
+
+static int u132_bus_resume(struct usb_hcd *hcd)
+{
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else
+		return 0;
+}
+
+#else
+#define u132_bus_suspend NULL
+#define u132_bus_resume NULL
+#endif
+static const struct hc_driver u132_hc_driver = {
+	.description = hcd_name,
+	.hcd_priv_size = sizeof(struct u132),
+	.irq = NULL,
+	.flags = HCD_USB11 | HCD_MEMORY,
+	.reset = u132_hcd_reset,
+	.start = u132_hcd_start,
+	.stop = u132_hcd_stop,
+	.urb_enqueue = u132_urb_enqueue,
+	.urb_dequeue = u132_urb_dequeue,
+	.endpoint_disable = u132_endpoint_disable,
+	.get_frame_number = u132_get_frame,
+	.hub_status_data = u132_hub_status_data,
+	.hub_control = u132_hub_control,
+	.bus_suspend = u132_bus_suspend,
+	.bus_resume = u132_bus_resume,
+	.start_port_reset = u132_start_port_reset,
+};
+
+/*
+* This function may be called by the USB core whilst the "usb_all_devices_rwsem"
+* is held for writing, thus this module must not call usb_remove_hcd()
+* synchronously - but instead should immediately stop activity to the
+* device and asynchronously call usb_remove_hcd()
+*/
+static int u132_remove(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	if (hcd) {
+		struct u132 *u132 = hcd_to_u132(hcd);
+		if (u132->going++ > 1) {
+			dev_err(&u132->platform_dev->dev, "already being remove"
+				"d\n");
+			return -ENODEV;
+		} else {
+			int rings = MAX_U132_RINGS;
+			int endps = MAX_U132_ENDPS;
+			dev_err(&u132->platform_dev->dev, "removing device u132"
+				".%d\n", u132->sequence_num);
+			msleep(100);
+			mutex_lock(&u132->sw_lock);
+			u132_monitor_cancel_work(u132);
+			while (rings-- > 0) {
+				struct u132_ring *ring = &u132->ring[rings];
+				u132_ring_cancel_work(u132, ring);
+			}
+			while (endps-- > 0) {
+				struct u132_endp *endp = u132->endp[endps];
+				if (endp)
+					u132_endp_cancel_work(u132, endp);
+			}
+			u132->going += 1;
+			printk(KERN_INFO "removing device u132.%d\n",
+				u132->sequence_num);
+			mutex_unlock(&u132->sw_lock);
+			usb_remove_hcd(hcd);
+			u132_u132_put_kref(u132);
+			return 0;
+		}
+	} else
+		return 0;
+}
+
+static void u132_initialise(struct u132 *u132, struct platform_device *pdev)
+{
+	int rings = MAX_U132_RINGS;
+	int ports = MAX_U132_PORTS;
+	int addrs = MAX_U132_ADDRS;
+	int udevs = MAX_U132_UDEVS;
+	int endps = MAX_U132_ENDPS;
+	u132->board = dev_get_platdata(&pdev->dev);
+	u132->platform_dev = pdev;
+	u132->power = 0;
+	u132->reset = 0;
+	mutex_init(&u132->sw_lock);
+	mutex_init(&u132->scheduler_lock);
+	while (rings-- > 0) {
+		struct u132_ring *ring = &u132->ring[rings];
+		ring->u132 = u132;
+		ring->number = rings + 1;
+		ring->length = 0;
+		ring->curr_endp = NULL;
+		INIT_DELAYED_WORK(&ring->scheduler,
+				  u132_hcd_ring_work_scheduler);
+	}
+	mutex_lock(&u132->sw_lock);
+	INIT_DELAYED_WORK(&u132->monitor, u132_hcd_monitor_work);
+	while (ports-- > 0) {
+		struct u132_port *port = &u132->port[ports];
+		port->u132 = u132;
+		port->reset = 0;
+		port->enable = 0;
+		port->power = 0;
+		port->Status = 0;
+	}
+	while (addrs-- > 0) {
+		struct u132_addr *addr = &u132->addr[addrs];
+		addr->address = 0;
+	}
+	while (udevs-- > 0) {
+		struct u132_udev *udev = &u132->udev[udevs];
+		int i = ARRAY_SIZE(udev->endp_number_in);
+		int o = ARRAY_SIZE(udev->endp_number_out);
+		udev->usb_device = NULL;
+		udev->udev_number = 0;
+		udev->usb_addr = 0;
+		udev->portnumber = 0;
+		while (i-- > 0)
+			udev->endp_number_in[i] = 0;
+
+		while (o-- > 0)
+			udev->endp_number_out[o] = 0;
+
+	}
+	while (endps-- > 0)
+		u132->endp[endps] = NULL;
+
+	mutex_unlock(&u132->sw_lock);
+}
+
+static int u132_probe(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd;
+	int retval;
+	u32 control;
+	u32 rh_a = -1;
+
+	msleep(100);
+	if (u132_exiting > 0)
+		return -ENODEV;
+
+	retval = ftdi_write_pcimem(pdev, intrdisable, OHCI_INTR_MIE);
+	if (retval)
+		return retval;
+	retval = ftdi_read_pcimem(pdev, control, &control);
+	if (retval)
+		return retval;
+	retval = ftdi_read_pcimem(pdev, roothub.a, &rh_a);
+	if (retval)
+		return retval;
+
+	hcd = usb_create_hcd(&u132_hc_driver, &pdev->dev, dev_name(&pdev->dev));
+	if (!hcd) {
+		printk(KERN_ERR "failed to create the usb hcd struct for U132\n"
+			);
+		ftdi_elan_gone_away(pdev);
+		return -ENOMEM;
+	} else {
+		struct u132 *u132 = hcd_to_u132(hcd);
+		retval = 0;
+		hcd->rsrc_start = 0;
+		mutex_lock(&u132_module_lock);
+		u132->sequence_num = ++u132_instances;
+		mutex_unlock(&u132_module_lock);
+		u132_u132_init_kref(u132);
+		u132_initialise(u132, pdev);
+		hcd->product_desc = "ELAN U132 Host Controller";
+		retval = usb_add_hcd(hcd, 0, 0);
+		if (retval != 0) {
+			dev_err(&u132->platform_dev->dev, "init error %d\n",
+				retval);
+			u132_u132_put_kref(u132);
+			return retval;
+		} else {
+			device_wakeup_enable(hcd->self.controller);
+			u132_monitor_queue_work(u132, 100);
+			return 0;
+		}
+	}
+}
+
+
+#ifdef CONFIG_PM
+/*
+ * for this device there's no useful distinction between the controller
+ * and its root hub.
+ */
+static int u132_suspend(struct platform_device *pdev, pm_message_t state)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else {
+		int retval = 0, ports;
+
+		switch (state.event) {
+		case PM_EVENT_FREEZE:
+			retval = u132_bus_suspend(hcd);
+			break;
+		case PM_EVENT_SUSPEND:
+		case PM_EVENT_HIBERNATE:
+			ports = MAX_U132_PORTS;
+			while (ports-- > 0) {
+				port_power(u132, ports, 0);
+			}
+			break;
+		}
+		return retval;
+	}
+}
+
+static int u132_resume(struct platform_device *pdev)
+{
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	struct u132 *u132 = hcd_to_u132(hcd);
+	if (u132->going > 1) {
+		dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
+			, u132->going);
+		return -ENODEV;
+	} else if (u132->going > 0) {
+		dev_err(&u132->platform_dev->dev, "device is being removed\n");
+		return -ESHUTDOWN;
+	} else {
+		int retval = 0;
+		if (!u132->port[0].power) {
+			int ports = MAX_U132_PORTS;
+			while (ports-- > 0) {
+				port_power(u132, ports, 1);
+			}
+			retval = 0;
+		} else {
+			retval = u132_bus_resume(hcd);
+		}
+		return retval;
+	}
+}
+
+#else
+#define u132_suspend NULL
+#define u132_resume NULL
+#endif
+/*
+* this driver is loaded explicitly by ftdi_u132
+*
+* the platform_driver struct is static because it is per type of module
+*/
+static struct platform_driver u132_platform_driver = {
+	.probe = u132_probe,
+	.remove = u132_remove,
+	.suspend = u132_suspend,
+	.resume = u132_resume,
+	.driver = {
+		   .name = hcd_name,
+		   },
+};
+static int __init u132_hcd_init(void)
+{
+	int retval;
+	u132_instances = 0;
+	u132_exiting = 0;
+	mutex_init(&u132_module_lock);
+	if (usb_disabled())
+		return -ENODEV;
+	printk(KERN_INFO "driver %s\n", hcd_name);
+	workqueue = create_singlethread_workqueue("u132");
+	if (!workqueue)
+		return -ENOMEM;
+	retval = platform_driver_register(&u132_platform_driver);
+	if (retval)
+		destroy_workqueue(workqueue);
+
+	return retval;
+}
+
+
+module_init(u132_hcd_init);
+static void __exit u132_hcd_exit(void)
+{
+	mutex_lock(&u132_module_lock);
+	u132_exiting += 1;
+	mutex_unlock(&u132_module_lock);
+	platform_driver_unregister(&u132_platform_driver);
+	printk(KERN_INFO "u132-hcd driver deregistered\n");
+	wait_event(u132_hcd_wait, u132_instances == 0);
+	flush_workqueue(workqueue);
+	destroy_workqueue(workqueue);
+}
+
+
+module_exit(u132_hcd_exit);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:u132_hcd");