80 files changed, 5228 insertions, 5698 deletions

diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index f972fcc798b6..f5de58a63f2b 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -15,7 +15,6 @@ obj-$(CONFIG_USB_OHCI_HCD)	+= host/
 obj-$(CONFIG_USB_UHCI_HCD)      += host/
 obj-$(CONFIG_USB_SL811_HCD)     += host/
 obj-$(CONFIG_USB_U132_HCD)      += host/
-obj-$(CONFIG_ETRAX_USB_HOST)    += host/
 obj-$(CONFIG_USB_OHCI_AT91)     += host/
 
 obj-$(CONFIG_USB_ACM)           += class/
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 3dfa3e40e148..30b7bfbc985a 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -4,6 +4,7 @@
  *
  *  Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
  *  Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
+ *  Copyright (C) 2007 Simon Arlott
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under the terms of the GNU General Public License as published by the Free
@@ -34,14 +35,14 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <linux/device.h>       /* FIXME: linux/firmware.h should include it itself */
+#include <linux/device.h>
 #include <linux/firmware.h>
 #include <linux/mutex.h>
 
 #include "usbatm.h"
 
-#define DRIVER_AUTHOR   "Roman Kagan, David Woodhouse, Duncan Sands"
-#define DRIVER_VERSION  "0.2"
+#define DRIVER_AUTHOR   "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott"
+#define DRIVER_VERSION  "0.3"
 #define DRIVER_DESC     "Conexant AccessRunner ADSL USB modem driver"
 
 static const char cxacru_driver_name[] = "cxacru";
@@ -64,7 +65,7 @@ static const char cxacru_driver_name[] = "cxacru";
 #define SDRAM_ENA       0x1
 
 #define CMD_TIMEOUT     2000    /* msecs */
-#define POLL_INTERVAL   5000    /* msecs */
+#define POLL_INTERVAL   1       /* secs */
 
 /* commands for interaction with the modem through the control channel before
  * firmware is loaded  */
@@ -146,6 +147,13 @@ enum cxacru_info_idx {
         CXINF_MAX = 0x1c,
 };
 
+enum cxacru_poll_state {
+        CXPOLL_STOPPING,
+        CXPOLL_STOPPED,
+        CXPOLL_POLLING,
+        CXPOLL_SHUTDOWN
+};
+
 struct cxacru_modem_type {
         u32 pll_f_clk;
         u32 pll_b_clk;
@@ -158,7 +166,12 @@ struct cxacru_data {
         const struct cxacru_modem_type *modem_type;
 
         int line_status;
+        struct mutex adsl_state_serialize;
+        int adsl_status;
         struct delayed_work poll_work;
+        u32 card_info[CXINF_MAX];
+        struct mutex poll_state_serialize;
+        int poll_state;
 
         /* contol handles */
         struct mutex cm_serialize;
@@ -170,6 +183,275 @@ struct cxacru_data {
         struct completion snd_done;
 };
 
+static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
+        u8 *wdata, int wsize, u8 *rdata, int rsize);
+static void cxacru_poll_status(struct work_struct *work);
+
+/* Card info exported through sysfs */
+#define CXACRU__ATTR_INIT(_name) \
+static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL)
+
+#define CXACRU_CMD_INIT(_name) \
+static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \
+        cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name)
+
+#define CXACRU_ATTR_INIT(_value, _type, _name) \
+static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \
+        struct device_attribute *attr, char *buf) \
+{ \
+        struct usb_interface *intf = to_usb_interface(dev); \
+        struct usbatm_data *usbatm_instance = usb_get_intfdata(intf); \
+        struct cxacru_data *instance = usbatm_instance->driver_data; \
+        return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \
+} \
+CXACRU__ATTR_INIT(_name)
+
+#define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name)
+#define CXACRU_CMD_CREATE(_name)          CXACRU_DEVICE_CREATE_FILE(_name)
+#define CXACRU__ATTR_CREATE(_name)        CXACRU_DEVICE_CREATE_FILE(_name)
+
+#define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name)
+#define CXACRU_CMD_REMOVE(_name)          CXACRU_DEVICE_REMOVE_FILE(_name)
+#define CXACRU__ATTR_REMOVE(_name)        CXACRU_DEVICE_REMOVE_FILE(_name)
+
+static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "%u\n", value);
+}
+
+static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
+{
+        return snprintf(buf, PAGE_SIZE, "%d\n", value);
+}
+
+static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
+{
+        if (unlikely(value < 0)) {
+                return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
+                                                value / 100, -value % 100);
+        } else {
+                return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
+                                                value / 100, value % 100);
+        }
+}
+
+static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
+{
+        switch (value) {
+        case 0: return snprintf(buf, PAGE_SIZE, "no\n");
+        case 1: return snprintf(buf, PAGE_SIZE, "yes\n");
+        default: return 0;
+        }
+}
+
+static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
+{
+        switch (value) {
+        case 1: return snprintf(buf, PAGE_SIZE, "not connected\n");
+        case 2: return snprintf(buf, PAGE_SIZE, "connected\n");
+        case 3: return snprintf(buf, PAGE_SIZE, "lost\n");
+        default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
+        }
+}
+
+static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
+{
+        switch (value) {
+        case 0: return snprintf(buf, PAGE_SIZE, "down\n");
+        case 1: return snprintf(buf, PAGE_SIZE, "attempting to activate\n");
+        case 2: return snprintf(buf, PAGE_SIZE, "training\n");
+        case 3: return snprintf(buf, PAGE_SIZE, "channel analysis\n");
+        case 4: return snprintf(buf, PAGE_SIZE, "exchange\n");
+        case 5: return snprintf(buf, PAGE_SIZE, "up\n");
+        case 6: return snprintf(buf, PAGE_SIZE, "waiting\n");
+        case 7: return snprintf(buf, PAGE_SIZE, "initialising\n");
+        default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
+        }
+}
+
+static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
+{
+        switch (value) {
+        case 0: return 0;
+        case 1: return snprintf(buf, PAGE_SIZE, "ANSI T1.413\n");
+        case 2: return snprintf(buf, PAGE_SIZE, "ITU-T G.992.1 (G.DMT)\n");
+        case 3: return snprintf(buf, PAGE_SIZE, "ITU-T G.992.2 (G.LITE)\n");
+        default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
+        }
+}
+
+/*
+ * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since
+ * this data is already in atm_dev there's no point.
+ *
+ * MAC_ADDRESS_HIGH = 0x????5544
+ * MAC_ADDRESS_LOW  = 0x33221100
+ * Where 00-55 are bytes 0-5 of the MAC.
+ */
+static ssize_t cxacru_sysfs_show_mac_address(struct device *dev,
+        struct device_attribute *attr, char *buf)
+{
+        struct usb_interface *intf = to_usb_interface(dev);
+        struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
+        struct atm_dev *atm_dev = usbatm_instance->atm_dev;
+
+        return snprintf(buf, PAGE_SIZE, "%02x:%02x:%02x:%02x:%02x:%02x\n",
+                        atm_dev->esi[0], atm_dev->esi[1], atm_dev->esi[2],
+                        atm_dev->esi[3], atm_dev->esi[4], atm_dev->esi[5]);
+}
+
+static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
+        struct device_attribute *attr, char *buf)
+{
+        struct usb_interface *intf = to_usb_interface(dev);
+        struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
+        struct cxacru_data *instance = usbatm_instance->driver_data;
+        u32 value = instance->card_info[CXINF_LINE_STARTABLE];
+
+        switch (value) {
+        case 0: return snprintf(buf, PAGE_SIZE, "running\n");
+        case 1: return snprintf(buf, PAGE_SIZE, "stopped\n");
+        default: return snprintf(buf, PAGE_SIZE, "unknown (%u)\n", value);
+        }
+}
+
+static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
+        struct device_attribute *attr, const char *buf, size_t count)
+{
+        struct usb_interface *intf = to_usb_interface(dev);
+        struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
+        struct cxacru_data *instance = usbatm_instance->driver_data;
+        int ret;
+        int poll = -1;
+        char str_cmd[8];
+        int len = strlen(buf);
+
+        if (!capable(CAP_NET_ADMIN))
+                return -EACCES;
+
+        ret = sscanf(buf, "%7s", str_cmd);
+        if (ret != 1)
+                return -EINVAL;
+        ret = 0;
+
+        if (mutex_lock_interruptible(&instance->adsl_state_serialize))
+                return -ERESTARTSYS;
+
+        if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) {
+                ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0);
+                if (ret < 0) {
+                        atm_err(usbatm_instance, "change adsl state:"
+                                " CHIP_ADSL_LINE_STOP returned %d\n", ret);
+
+                        ret = -EIO;
+                } else {
+                        ret = len;
+                        poll = CXPOLL_STOPPED;
+                }
+        }
+
+        /* Line status is only updated every second
+         * and the device appears to only react to
+         * START/STOP every second too. Wait 1.5s to
+         * be sure that restart will have an effect. */
+        if (!strcmp(str_cmd, "restart"))
+                msleep(1500);
+
+        if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) {
+                ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
+                if (ret < 0) {
+                        atm_err(usbatm_instance, "change adsl state:"
+                                " CHIP_ADSL_LINE_START returned %d\n", ret);
+
+                        ret = -EIO;
+                } else {
+                        ret = len;
+                        poll = CXPOLL_POLLING;
+                }
+        }
+
+        if (!strcmp(str_cmd, "poll")) {
+                ret = len;
+                poll = CXPOLL_POLLING;
+        }
+
+        if (ret == 0) {
+                ret = -EINVAL;
+                poll = -1;
+        }
+
+        if (poll == CXPOLL_POLLING) {
+                mutex_lock(&instance->poll_state_serialize);
+                switch (instance->poll_state) {
+                case CXPOLL_STOPPED:
+                        /* start polling */
+                        instance->poll_state = CXPOLL_POLLING;
+                        break;
+
+                case CXPOLL_STOPPING:
+                        /* abort stop request */
+                        instance->poll_state = CXPOLL_POLLING;
+                case CXPOLL_POLLING:
+                case CXPOLL_SHUTDOWN:
+                        /* don't start polling */
+                        poll = -1;
+                }
+                mutex_unlock(&instance->poll_state_serialize);
+        } else if (poll == CXPOLL_STOPPED) {
+                mutex_lock(&instance->poll_state_serialize);
+                /* request stop */
+                if (instance->poll_state == CXPOLL_POLLING)
+                        instance->poll_state = CXPOLL_STOPPING;
+                mutex_unlock(&instance->poll_state_serialize);
+        }
+
+        mutex_unlock(&instance->adsl_state_serialize);
+
+        if (poll == CXPOLL_POLLING)
+                cxacru_poll_status(&instance->poll_work.work);
+
+        return ret;
+}
+
+/*
+ * All device attributes are included in CXACRU_ALL_FILES
+ * so that the same list can be used multiple times:
+ *     INIT   (define the device attributes)
+ *     CREATE (create all the device files)
+ *     REMOVE (remove all the device files)
+ *
+ * With the last two being defined as needed in the functions
+ * they are used in before calling CXACRU_ALL_FILES()
+ */
+#define CXACRU_ALL_FILES(_action) \
+CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE,           u32,  downstream_rate); \
+CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE,             u32,  upstream_rate); \
+CXACRU_ATTR_##_action(CXINF_LINK_STATUS,               LINK, link_status); \
+CXACRU_ATTR_##_action(CXINF_LINE_STATUS,               LINE, line_status); \
+CXACRU__ATTR_##_action(                                      mac_address); \
+CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN,       dB,   upstream_snr_margin); \
+CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN,     dB,   downstream_snr_margin); \
+CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION,      dB,   upstream_attenuation); \
+CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION,    dB,   downstream_attenuation); \
+CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER,         s8,   transmitter_power); \
+CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME,   u32,  upstream_bits_per_frame); \
+CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32,  downstream_bits_per_frame); \
+CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS,          u32,  startup_attempts); \
+CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS,       u32,  upstream_crc_errors); \
+CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS,     u32,  downstream_crc_errors); \
+CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS,       u32,  upstream_fec_errors); \
+CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS,     u32,  downstream_fec_errors); \
+CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS,       u32,  upstream_hec_errors); \
+CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS,     u32,  downstream_hec_errors); \
+CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE,            bool, line_startable); \
+CXACRU_ATTR_##_action(CXINF_MODULATION,                MODU, modulation); \
+CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND,              u32,  adsl_headend); \
+CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT,  u32,  adsl_headend_environment); \
+CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION,        u32,  adsl_controller_version); \
+CXACRU_CMD_##_action(                                        adsl_state);
+
+CXACRU_ALL_FILES(INIT);
+
 /* the following three functions are stolen from drivers/usb/core/message.c */
 static void cxacru_blocking_completion(struct urb *urb)
 {
@@ -347,8 +629,6 @@ static int cxacru_card_status(struct cxacru_data *instance)
         return 0;
 }
 
-static void cxacru_poll_status(struct work_struct *work);
-
 static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
                 struct atm_dev *atm_dev)
 {
@@ -357,6 +637,7 @@ static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
         struct atm_dev *atm_dev = usbatm_instance->atm_dev;
         */
         int ret;
+        int start_polling = 1;
 
         dbg("cxacru_atm_start");
 
@@ -369,14 +650,35 @@ static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
         }
 
         /* start ADSL */
+        mutex_lock(&instance->adsl_state_serialize);
         ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
         if (ret < 0) {
                 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
+                mutex_unlock(&instance->adsl_state_serialize);
                 return ret;
         }
 
         /* Start status polling */
-        cxacru_poll_status(&instance->poll_work.work);
+        mutex_lock(&instance->poll_state_serialize);
+        switch (instance->poll_state) {
+        case CXPOLL_STOPPED:
+                /* start polling */
+                instance->poll_state = CXPOLL_POLLING;
+                break;
+
+        case CXPOLL_STOPPING:
+                /* abort stop request */
+                instance->poll_state = CXPOLL_POLLING;
+        case CXPOLL_POLLING:
+        case CXPOLL_SHUTDOWN:
+                /* don't start polling */
+                start_polling = 0;
+        }
+        mutex_unlock(&instance->poll_state_serialize);
+        mutex_unlock(&instance->adsl_state_serialize);
+
+        if (start_polling)
+                cxacru_poll_status(&instance->poll_work.work);
         return 0;
 }
 
@@ -387,14 +689,46 @@ static void cxacru_poll_status(struct work_struct *work)
         u32 buf[CXINF_MAX] = {};
         struct usbatm_data *usbatm = instance->usbatm;
         struct atm_dev *atm_dev = usbatm->atm_dev;
+        int keep_polling = 1;
         int ret;
 
         ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
         if (ret < 0) {
-                atm_warn(usbatm, "poll status: error %d\n", ret);
+                if (ret != -ESHUTDOWN)
+                        atm_warn(usbatm, "poll status: error %d\n", ret);
+
+                mutex_lock(&instance->poll_state_serialize);
+                if (instance->poll_state != CXPOLL_SHUTDOWN) {
+                        instance->poll_state = CXPOLL_STOPPED;
+
+                        if (ret != -ESHUTDOWN)
+                                atm_warn(usbatm, "polling disabled, set adsl_state"
+                                                " to 'start' or 'poll' to resume\n");
+                }
+                mutex_unlock(&instance->poll_state_serialize);
                 goto reschedule;
         }
 
+        memcpy(instance->card_info, buf, sizeof(instance->card_info));
+
+        if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) {
+                instance->adsl_status = buf[CXINF_LINE_STARTABLE];
+
+                switch (instance->adsl_status) {
+                case 0:
+                        atm_printk(KERN_INFO, usbatm, "ADSL state: running\n");
+                        break;
+
+                case 1:
+                        atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n");
+                        break;
+
+                default:
+                        atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status);
+                        break;
+                }
+        }
+
         if (instance->line_status == buf[CXINF_LINE_STATUS])
                 goto reschedule;
 
@@ -449,7 +783,20 @@ static void cxacru_poll_status(struct work_struct *work)
                 break;
         }
 reschedule:
-        schedule_delayed_work(&instance->poll_work, msecs_to_jiffies(POLL_INTERVAL));
+
+        mutex_lock(&instance->poll_state_serialize);
+        if (instance->poll_state == CXPOLL_STOPPING &&
+                                instance->adsl_status == 1 && /* stopped */
+                                instance->line_status == 0) /* down */
+                instance->poll_state = CXPOLL_STOPPED;
+
+        if (instance->poll_state == CXPOLL_STOPPED)
+                keep_polling = 0;
+        mutex_unlock(&instance->poll_state_serialize);
+
+        if (keep_polling)
+                schedule_delayed_work(&instance->poll_work,
+                                round_jiffies_relative(POLL_INTERVAL*HZ));
 }
 
 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
@@ -684,6 +1031,14 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
 
         instance->usbatm = usbatm_instance;
         instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
+        memset(instance->card_info, 0, sizeof(instance->card_info));
+
+        mutex_init(&instance->poll_state_serialize);
+        instance->poll_state = CXPOLL_STOPPED;
+        instance->line_status = -1;
+        instance->adsl_status = -1;
+
+        mutex_init(&instance->adsl_state_serialize);
 
         instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
         if (!instance->rcv_buf) {
@@ -710,6 +1065,13 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
                 goto fail;
         }
 
+        #define CXACRU_DEVICE_CREATE_FILE(_name) \
+                ret = device_create_file(&intf->dev, &dev_attr_##_name); \
+                if (unlikely(ret)) \
+                        goto fail_sysfs;
+        CXACRU_ALL_FILES(CREATE);
+        #undef CXACRU_DEVICE_CREATE_FILE
+
         usb_fill_int_urb(instance->rcv_urb,
                         usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
                         instance->rcv_buf, PAGE_SIZE,
@@ -730,6 +1092,14 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
 
         return 0;
 
+ fail_sysfs:
+        dbg("cxacru_bind: device_create_file failed (%d)\n", ret);
+
+        #define CXACRU_DEVICE_REMOVE_FILE(_name) \
+                device_remove_file(&intf->dev, &dev_attr_##_name);
+        CXACRU_ALL_FILES(REMOVE);
+        #undef CXACRU_DEVICE_REVOVE_FILE
+
  fail:
         free_page((unsigned long) instance->snd_buf);
         free_page((unsigned long) instance->rcv_buf);
@@ -744,6 +1114,7 @@ static void cxacru_unbind(struct usbatm_data *usbatm_instance,
                 struct usb_interface *intf)
 {
         struct cxacru_data *instance = usbatm_instance->driver_data;
+        int is_polling = 1;
 
         dbg("cxacru_unbind entered");
 
@@ -752,8 +1123,20 @@ static void cxacru_unbind(struct usbatm_data *usbatm_instance,
                 return;
         }
 
-        while (!cancel_delayed_work(&instance->poll_work))
-               flush_scheduled_work();
+        mutex_lock(&instance->poll_state_serialize);
+        BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN);
+
+        /* ensure that status polling continues unless
+         * it has already stopped */
+        if (instance->poll_state == CXPOLL_STOPPED)
+                is_polling = 0;
+
+        /* stop polling from being stopped or started */
+        instance->poll_state = CXPOLL_SHUTDOWN;
+        mutex_unlock(&instance->poll_state_serialize);
+
+        if (is_polling)
+                cancel_rearming_delayed_work(&instance->poll_work);
 
         usb_kill_urb(instance->snd_urb);
         usb_kill_urb(instance->rcv_urb);
@@ -762,6 +1145,12 @@ static void cxacru_unbind(struct usbatm_data *usbatm_instance,
 
         free_page((unsigned long) instance->snd_buf);
         free_page((unsigned long) instance->rcv_buf);
+
+        #define CXACRU_DEVICE_REMOVE_FILE(_name) \
+                device_remove_file(&intf->dev, &dev_attr_##_name);
+        CXACRU_ALL_FILES(REMOVE);
+        #undef CXACRU_DEVICE_REVOVE_FILE
+
         kfree(instance);
 
         usbatm_instance->driver_data = NULL;
diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index ec63b0ee0743..b3f779f5933a 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -274,6 +274,9 @@ static void usbatm_complete(struct urb *urb)
                         (!(channel->usbatm->flags & UDSL_IGNORE_EILSEQ) ||
                          urb->status != -EILSEQ ))
         {
+                if (urb->status == -ESHUTDOWN)
+                        return;
+
                 if (printk_ratelimit())
                         atm_warn(channel->usbatm, "%s: urb 0x%p failed (%d)!\n",
                                 __func__, urb, urb->status);
@@ -343,7 +346,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
                 UDSL_ASSERT(sarb->tail + ATM_CELL_PAYLOAD <= sarb->end);
         }
 
-        memcpy(sarb->tail, source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);
+        memcpy(skb_tail_pointer(sarb), source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);
         __skb_put(sarb, ATM_CELL_PAYLOAD);
 
         if (pti & 1) {
@@ -370,7 +373,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
                         goto out;
                 }
 
-                if (crc32_be(~0, sarb->tail - pdu_length, pdu_length) != 0xc704dd7b) {
+                if (crc32_be(~0, skb_tail_pointer(sarb) - pdu_length, pdu_length) != 0xc704dd7b) {
                         atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n",
                                   __func__, vcc);
                         atomic_inc(&vcc->stats->rx_err);
@@ -396,7 +399,9 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
                         goto out;       /* atm_charge increments rx_drop */
                 }
 
-                memcpy(skb->data, sarb->tail - pdu_length, length);
+                skb_copy_to_linear_data(skb,
+                                        skb_tail_pointer(sarb) - pdu_length,
+                                        length);
                 __skb_put(skb, length);
 
                 vdbg("%s: sending skb 0x%p, skb->len %u, skb->truesize %u",
@@ -484,7 +489,7 @@ static unsigned int usbatm_write_cells(struct usbatm_data *instance,
                 ptr[4] = 0xec;
                 ptr += ATM_CELL_HEADER;
 
-                memcpy(ptr, skb->data, data_len);
+                skb_copy_from_linear_data(skb, ptr, data_len);
                 ptr += data_len;
                 __skb_pull(skb, data_len);
 
@@ -966,6 +971,14 @@ static int usbatm_atm_init(struct usbatm_data *instance)
         /* temp init ATM device, set to 128kbit */
         atm_dev->link_rate = 128 * 1000 / 424;
 
+        ret = sysfs_create_link(&atm_dev->class_dev.kobj,
+                                &instance->usb_intf->dev.kobj, "device");
+        if (ret) {
+                atm_err(instance, "%s: sysfs_create_link failed: %d\n",
+                                        __func__, ret);
+                goto fail_sysfs;
+        }
+
         if (instance->driver->atm_start && ((ret = instance->driver->atm_start(instance, atm_dev)) < 0)) {
                 atm_err(instance, "%s: atm_start failed: %d!\n", __func__, ret);
                 goto fail;
@@ -984,6 +997,8 @@ static int usbatm_atm_init(struct usbatm_data *instance)
         return 0;
 
  fail:
+        sysfs_remove_link(&atm_dev->class_dev.kobj, "device");
+ fail_sysfs:
         instance->atm_dev = NULL;
         atm_dev_deregister(atm_dev); /* usbatm_atm_dev_close will eventually be called */
         return ret;
@@ -1316,8 +1331,10 @@ void usbatm_usb_disconnect(struct usb_interface *intf)
         kfree(instance->cell_buf);
 
         /* ATM finalize */
-        if (instance->atm_dev)
+        if (instance->atm_dev) {
+                sysfs_remove_link(&instance->atm_dev->class_dev.kobj, "device");
                 atm_dev_deregister(instance->atm_dev);
+        }
 
         usbatm_put_instance(instance);  /* taken in usbatm_usb_probe */
 }
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 31ae661e586a..14de3b1b6a20 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -212,7 +212,41 @@ static int acm_write_start(struct acm *acm)
         }
         return rc;
 }
+/*
+ * attributes exported through sysfs
+ */
+static ssize_t show_caps
+(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct usb_interface *intf = to_usb_interface(dev);
+        struct acm *acm = usb_get_intfdata(intf);
+
+        return sprintf(buf, "%d", acm->ctrl_caps);
+}
+static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL);
+
+static ssize_t show_country_codes
+(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct usb_interface *intf = to_usb_interface(dev);
+        struct acm *acm = usb_get_intfdata(intf);
+
+        memcpy(buf, acm->country_codes, acm->country_code_size);
+        return acm->country_code_size;
+}
+
+static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL);
+
+static ssize_t show_country_rel_date
+(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct usb_interface *intf = to_usb_interface(dev);
+        struct acm *acm = usb_get_intfdata(intf);
+
+        return sprintf(buf, "%d", acm->country_rel_date);
+}
 
+static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL);
 /*
  * Interrupt handlers for various ACM device responses
  */
@@ -514,6 +548,7 @@ static void acm_tty_unregister(struct acm *acm)
         usb_free_urb(acm->writeurb);
         for (i = 0; i < nr; i++)
                 usb_free_urb(acm->ru[i].urb);
+        kfree(acm->country_codes);
         kfree(acm);
 }
 
@@ -761,6 +796,7 @@ static int acm_probe (struct usb_interface *intf,
                       const struct usb_device_id *id)
 {
         struct usb_cdc_union_desc *union_header = NULL;
+        struct usb_cdc_country_functional_desc *cfd = NULL;
         char *buffer = intf->altsetting->extra;
         int buflen = intf->altsetting->extralen;
         struct usb_interface *control_interface;
@@ -824,8 +860,9 @@ static int acm_probe (struct usb_interface *intf,
                                 union_header = (struct usb_cdc_union_desc *)
                                                         buffer;
                                 break;
-                        case USB_CDC_COUNTRY_TYPE: /* maybe somehow export */
-                                break; /* for now we ignore it */
+                        case USB_CDC_COUNTRY_TYPE: /* export through sysfs*/
+                                cfd = (struct usb_cdc_country_functional_desc *)buffer;
+                                break;
                         case USB_CDC_HEADER_TYPE: /* maybe check version */ 
                                 break; /* for now we ignore it */ 
                         case USB_CDC_ACM_TYPE:
@@ -983,6 +1020,34 @@ skip_normal_probe:
                 goto alloc_fail7;
         }
 
+        usb_set_intfdata (intf, acm);
+
+        i = device_create_file(&intf->dev, &dev_attr_bmCapabilities);
+        if (i < 0)
+                goto alloc_fail8;
+
+        if (cfd) { /* export the country data */
+                acm->country_codes = kmalloc(cfd->bLength - 4, GFP_KERNEL);
+                if (!acm->country_codes)
+                        goto skip_countries;
+                acm->country_code_size = cfd->bLength - 4;
+                memcpy(acm->country_codes, (u8 *)&cfd->wCountyCode0, cfd->bLength - 4);
+                acm->country_rel_date = cfd->iCountryCodeRelDate;
+
+                i = device_create_file(&intf->dev, &dev_attr_wCountryCodes);
+                if (i < 0) {
+                        kfree(acm->country_codes);
+                        goto skip_countries;
+                }
+
+                i = device_create_file(&intf->dev, &dev_attr_iCountryCodeRelDate);
+                if (i < 0) {
+                        kfree(acm->country_codes);
+                        goto skip_countries;
+                }
+        }
+
+skip_countries:
         usb_fill_int_urb(acm->ctrlurb, usb_dev, usb_rcvintpipe(usb_dev, epctrl->bEndpointAddress),
                          acm->ctrl_buffer, ctrlsize, acm_ctrl_irq, acm, epctrl->bInterval);
         acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
@@ -1006,9 +1071,10 @@ skip_normal_probe:
         tty_register_device(acm_tty_driver, minor, &control_interface->dev);
 
         acm_table[minor] = acm;
-        usb_set_intfdata (intf, acm);
-        return 0;
 
+        return 0;
+alloc_fail8:
+        usb_free_urb(acm->writeurb);
 alloc_fail7:
         for (i = 0; i < num_rx_buf; i++)
                 usb_buffer_free(usb_dev, acm->readsize, acm->rb[i].base, acm->rb[i].dma);
@@ -1027,7 +1093,7 @@ alloc_fail:
 
 static void acm_disconnect(struct usb_interface *intf)
 {
-        struct acm *acm = usb_get_intfdata (intf);
+        struct acm *acm = usb_get_intfdata(intf);
         struct usb_device *usb_dev = interface_to_usbdev(intf);
         int i;
 
@@ -1041,6 +1107,11 @@ static void acm_disconnect(struct usb_interface *intf)
                 mutex_unlock(&open_mutex);
                 return;
         }
+        if (acm->country_codes){
+                device_remove_file(&intf->dev, &dev_attr_wCountryCodes);
+                device_remove_file(&intf->dev, &dev_attr_iCountryCodeRelDate);
+        }
+        device_remove_file(&intf->dev, &dev_attr_bmCapabilities);
         acm->dev = NULL;
         usb_set_intfdata(acm->control, NULL);
         usb_set_intfdata(acm->data, NULL);
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index 1bcaea32cfc1..09f7765dbf8d 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -91,6 +91,9 @@ struct acm {
         struct urb *ctrlurb, *writeurb;                 /* urbs */
         u8 *ctrl_buffer;                                /* buffers of urbs */
         dma_addr_t ctrl_dma;                            /* dma handles of buffers */
+        u8 *country_codes;                              /* country codes from device */
+        unsigned int country_code_size;                 /* size of this buffer */
+        unsigned int country_rel_date;                  /* release date of version */
         struct acm_wb wb[ACM_NW];
         struct acm_ru ru[ACM_NR];
         struct acm_rb rb[ACM_NR];
diff --git a/drivers/usb/core/Kconfig b/drivers/usb/core/Kconfig
index 2fc0f88a3d86..f493fb1eaa27 100644
--- a/drivers/usb/core/Kconfig
+++ b/drivers/usb/core/Kconfig
@@ -31,7 +31,30 @@ config USB_DEVICEFS
           For the format of the various /proc/bus/usb/ files, please read
           <file:Documentation/usb/proc_usb_info.txt>.
 
-          Most users want to say Y here.
+          Usbfs files can't handle Access Control Lists (ACL), which are the
+          default way to grant access to USB devices for untrusted users of a
+          desktop system. The usbfs functionality is replaced by real
+          device-nodes managed by udev. These nodes live in /dev/bus/usb and
+          are used by libusb.
+
+config USB_DEVICE_CLASS
+        bool "USB device class-devices (DEPRECATED)"
+        depends on USB
+        default n
+        ---help---
+          Userspace access to USB devices is granted by device-nodes exported
+          directly from the usbdev in sysfs. Old versions of the driver
+          core and udev needed additional class devices to export device nodes.
+
+          These additional devices are difficult to handle in userspace, if
+          information about USB interfaces must be available. One device contains
+          the device node, the other device contains the interface data. Both
+          devices are at the same level in sysfs (siblings) and one can't access
+          the other. The device node created directly by the usbdev is the parent
+          device of the interface and therefore easily accessible from the interface
+          event.
+
+          This option provides backward compatibility if needed.
 
 config USB_DYNAMIC_MINORS
         bool "Dynamic USB minor allocation (EXPERIMENTAL)"
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index aefc7987120d..6753ca059ee4 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -246,7 +246,6 @@ static char *usb_dump_interface_descriptor(char *start, char *end,
 
         if (start > end)
                 return start;
-        down_read(&usb_bus_type.subsys.rwsem);
         if (iface) {
                 driver_name = (iface->dev.driver
                                 ? iface->dev.driver->name
@@ -263,7 +262,6 @@ static char *usb_dump_interface_descriptor(char *start, char *end,
                          desc->bInterfaceSubClass,
                          desc->bInterfaceProtocol,
                          driver_name);
-        up_read(&usb_bus_type.subsys.rwsem);
         return start;
 }
 
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 36e7a843bf91..927a181120a9 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -57,7 +57,6 @@
 
 #define USB_MAXBUS                      64
 #define USB_DEVICE_MAX                  USB_MAXBUS * 128
-static struct class *usb_device_class;
 
 /* Mutual exclusion for removal, open, and release */
 DEFINE_MUTEX(usbfs_mutex);
@@ -421,14 +420,11 @@ static int claimintf(struct dev_state *ps, unsigned int ifnum)
         if (test_bit(ifnum, &ps->ifclaimed))
                 return 0;
 
-        /* lock against other changes to driver bindings */
-        down_write(&usb_bus_type.subsys.rwsem);
         intf = usb_ifnum_to_if(dev, ifnum);
         if (!intf)
                 err = -ENOENT;
         else
                 err = usb_driver_claim_interface(&usbfs_driver, intf, ps);
-        up_write(&usb_bus_type.subsys.rwsem);
         if (err == 0)
                 set_bit(ifnum, &ps->ifclaimed);
         return err;
@@ -444,8 +440,6 @@ static int releaseintf(struct dev_state *ps, unsigned int ifnum)
         if (ifnum >= 8*sizeof(ps->ifclaimed))
                 return err;
         dev = ps->dev;
-        /* lock against other changes to driver bindings */
-        down_write(&usb_bus_type.subsys.rwsem);
         intf = usb_ifnum_to_if(dev, ifnum);
         if (!intf)
                 err = -ENOENT;
@@ -453,7 +447,6 @@ static int releaseintf(struct dev_state *ps, unsigned int ifnum)
                 usb_driver_release_interface(&usbfs_driver, intf);
                 err = 0;
         }
-        up_write(&usb_bus_type.subsys.rwsem);
         return err;
 }
 
@@ -520,22 +513,25 @@ static int check_ctrlrecip(struct dev_state *ps, unsigned int requesttype, unsig
         return ret;
 }
 
-static struct usb_device *usbdev_lookup_minor(int minor)
+static int __match_minor(struct device *dev, void *data)
 {
-        struct device *device;
-        struct usb_device *udev = NULL;
+        int minor = *((int *)data);
 
-        down(&usb_device_class->sem);
-        list_for_each_entry(device, &usb_device_class->devices, node) {
-                if (device->devt == MKDEV(USB_DEVICE_MAJOR, minor)) {
-                        udev = device->platform_data;
-                        break;
-                }
-        }
-        up(&usb_device_class->sem);
+        if (dev->devt == MKDEV(USB_DEVICE_MAJOR, minor))
+                return 1;
+        return 0;
+}
 
-        return udev;
-};
+static struct usb_device *usbdev_lookup_by_minor(int minor)
+{
+        struct device *dev;
+
+        dev = bus_find_device(&usb_bus_type, NULL, &minor, __match_minor);
+        if (!dev)
+                return NULL;
+        put_device(dev);
+        return container_of(dev, struct usb_device, dev);
+}
 
 /*
  * file operations
@@ -554,11 +550,14 @@ static int usbdev_open(struct inode *inode, struct file *file)
                 goto out;
 
         ret = -ENOENT;
-        /* check if we are called from a real node or usbfs */
+        /* usbdev device-node */
         if (imajor(inode) == USB_DEVICE_MAJOR)
-                dev = usbdev_lookup_minor(iminor(inode));
+                dev = usbdev_lookup_by_minor(iminor(inode));
+#ifdef CONFIG_USB_DEVICEFS
+        /* procfs file */
         if (!dev)
                 dev = inode->i_private;
+#endif
         if (!dev)
                 goto out;
         ret = usb_autoresume_device(dev);
@@ -581,7 +580,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
         ps->disccontext = NULL;
         ps->ifclaimed = 0;
         security_task_getsecid(current, &ps->secid);
-        wmb();
+        smp_wmb();
         list_add_tail(&ps->list, &dev->filelist);
         file->private_data = ps;
  out:
@@ -813,7 +812,6 @@ static int proc_getdriver(struct dev_state *ps, void __user *arg)
 
         if (copy_from_user(&gd, arg, sizeof(gd)))
                 return -EFAULT;
-        down_read(&usb_bus_type.subsys.rwsem);
         intf = usb_ifnum_to_if(ps->dev, gd.interface);
         if (!intf || !intf->dev.driver)
                 ret = -ENODATA;
@@ -822,7 +820,6 @@ static int proc_getdriver(struct dev_state *ps, void __user *arg)
                                 sizeof(gd.driver));
                 ret = (copy_to_user(arg, &gd, sizeof(gd)) ? -EFAULT : 0);
         }
-        up_read(&usb_bus_type.subsys.rwsem);
         return ret;
 }
 
@@ -1351,15 +1348,12 @@ static int proc_ioctl(struct dev_state *ps, struct usbdevfs_ioctl *ctl)
 
         /* disconnect kernel driver from interface */
         case USBDEVFS_DISCONNECT:
-
-                down_write(&usb_bus_type.subsys.rwsem);
                 if (intf->dev.driver) {
                         driver = to_usb_driver(intf->dev.driver);
                         dev_dbg (&intf->dev, "disconnect by usbfs\n");
                         usb_driver_release_interface(driver, intf);
                 } else
                         retval = -ENODATA;
-                up_write(&usb_bus_type.subsys.rwsem);
                 break;
 
         /* let kernel drivers try to (re)bind to the interface */
@@ -1371,7 +1365,6 @@ static int proc_ioctl(struct dev_state *ps, struct usbdevfs_ioctl *ctl)
 
         /* talk directly to the interface's driver */
         default:
-                down_read(&usb_bus_type.subsys.rwsem);
                 if (intf->dev.driver)
                         driver = to_usb_driver(intf->dev.driver);
                 if (driver == NULL || driver->ioctl == NULL) {
@@ -1381,7 +1374,6 @@ static int proc_ioctl(struct dev_state *ps, struct usbdevfs_ioctl *ctl)
                         if (retval == -ENOIOCTLCMD)
                                 retval = -ENOTTY;
                 }
-                up_read(&usb_bus_type.subsys.rwsem);
         }
 
         /* cleanup and return */
@@ -1583,7 +1575,7 @@ static unsigned int usbdev_poll(struct file *file, struct poll_table_struct *wai
         return mask;
 }
 
-const struct file_operations usbfs_device_file_operations = {
+const struct file_operations usbdev_file_operations = {
         .llseek =       usbdev_lseek,
         .read =         usbdev_read,
         .poll =         usbdev_poll,
@@ -1592,50 +1584,53 @@ const struct file_operations usbfs_device_file_operations = {
         .release =      usbdev_release,
 };
 
-static int usbdev_add(struct usb_device *dev)
+#ifdef CONFIG_USB_DEVICE_CLASS
+static struct class *usb_classdev_class;
+
+static int usb_classdev_add(struct usb_device *dev)
 {
         int minor = ((dev->bus->busnum-1) * 128) + (dev->devnum-1);
 
-        dev->usbfs_dev = device_create(usb_device_class, &dev->dev,
+        dev->usb_classdev = device_create(usb_classdev_class, &dev->dev,
                                 MKDEV(USB_DEVICE_MAJOR, minor),
                                 "usbdev%d.%d", dev->bus->busnum, dev->devnum);
-        if (IS_ERR(dev->usbfs_dev))
-                return PTR_ERR(dev->usbfs_dev);
+        if (IS_ERR(dev->usb_classdev))
+                return PTR_ERR(dev->usb_classdev);
 
-        dev->usbfs_dev->platform_data = dev;
         return 0;
 }
 
-static void usbdev_remove(struct usb_device *dev)
+static void usb_classdev_remove(struct usb_device *dev)
 {
-        device_unregister(dev->usbfs_dev);
+        device_unregister(dev->usb_classdev);
 }
 
-static int usbdev_notify(struct notifier_block *self, unsigned long action,
-                         void *dev)
+static int usb_classdev_notify(struct notifier_block *self,
+                               unsigned long action, void *dev)
 {
         switch (action) {
         case USB_DEVICE_ADD:
-                if (usbdev_add(dev))
+                if (usb_classdev_add(dev))
                         return NOTIFY_BAD;
                 break;
         case USB_DEVICE_REMOVE:
-                usbdev_remove(dev);
+                usb_classdev_remove(dev);
                 break;
         }
         return NOTIFY_OK;
 }
 
 static struct notifier_block usbdev_nb = {
-        .notifier_call =        usbdev_notify,
+        .notifier_call =        usb_classdev_notify,
 };
+#endif
 
 static struct cdev usb_device_cdev = {
         .kobj   = {.name = "usb_device", },
         .owner  = THIS_MODULE,
 };
 
-int __init usbdev_init(void)
+int __init usb_devio_init(void)
 {
         int retval;
 
@@ -1645,38 +1640,38 @@ int __init usbdev_init(void)
                 err("unable to register minors for usb_device");
                 goto out;
         }
-        cdev_init(&usb_device_cdev, &usbfs_device_file_operations);
+        cdev_init(&usb_device_cdev, &usbdev_file_operations);
         retval = cdev_add(&usb_device_cdev, USB_DEVICE_DEV, USB_DEVICE_MAX);
         if (retval) {
                 err("unable to get usb_device major %d", USB_DEVICE_MAJOR);
                 goto error_cdev;
         }
-        usb_device_class = class_create(THIS_MODULE, "usb_device");
-        if (IS_ERR(usb_device_class)) {
+#ifdef CONFIG_USB_DEVICE_CLASS
+        usb_classdev_class = class_create(THIS_MODULE, "usb_device");
+        if (IS_ERR(usb_classdev_class)) {
                 err("unable to register usb_device class");
-                retval = PTR_ERR(usb_device_class);
-                goto error_class;
+                retval = PTR_ERR(usb_classdev_class);
+                cdev_del(&usb_device_cdev);
+                usb_classdev_class = NULL;
+                goto out;
         }
 
         usb_register_notify(&usbdev_nb);
-
+#endif
 out:
         return retval;
 
-error_class:
-        usb_device_class = NULL;
-        cdev_del(&usb_device_cdev);
-
 error_cdev:
         unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX);
         goto out;
 }
 
-void usbdev_cleanup(void)
+void usb_devio_cleanup(void)
 {
+#ifdef CONFIG_USB_DEVICE_CLASS
         usb_unregister_notify(&usbdev_nb);
-        class_destroy(usb_device_class);
+        class_destroy(usb_classdev_class);
+#endif
         cdev_del(&usb_device_cdev);
         unregister_chrdev_region(USB_DEVICE_DEV, USB_DEVICE_MAX);
 }
-
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index 9e3e943f313c..b9f7f90aef82 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -287,9 +287,9 @@ static int usb_unbind_interface(struct device *dev)
  * way to bind to an interface is to return the private data from
  * the driver's probe() method.
  *
- * Callers must own the device lock and the driver model's usb_bus_type.subsys
- * writelock.  So driver probe() entries don't need extra locking,
- * but other call contexts may need to explicitly claim those locks.
+ * Callers must own the device lock, so driver probe() entries don't need
+ * extra locking, but other call contexts may need to explicitly claim that
+ * lock.
  */
 int usb_driver_claim_interface(struct usb_driver *driver,
                                 struct usb_interface *iface, void* priv)
@@ -330,9 +330,9 @@ EXPORT_SYMBOL(usb_driver_claim_interface);
  * also causes the driver disconnect() method to be called.
  *
  * This call is synchronous, and may not be used in an interrupt context.
- * Callers must own the device lock and the driver model's usb_bus_type.subsys
- * writelock.  So driver disconnect() entries don't need extra locking,
- * but other call contexts may need to explicitly claim those locks.
+ * Callers must own the device lock, so driver disconnect() entries don't
+ * need extra locking, but other call contexts may need to explicitly claim
+ * that lock.
  */
 void usb_driver_release_interface(struct usb_driver *driver,
                                         struct usb_interface *iface)
@@ -574,23 +574,10 @@ static int usb_device_match(struct device *dev, struct device_driver *drv)
 }
 
 #ifdef  CONFIG_HOTPLUG
-
-/*
- * This sends an uevent to userspace, typically helping to load driver
- * or other modules, configure the device, and more.  Drivers can provide
- * a MODULE_DEVICE_TABLE to help with module loading subtasks.
- *
- * We're called either from khubd (the typical case) or from root hub
- * (init, kapmd, modprobe, rmmod, etc), but the agents need to handle
- * delays in event delivery.  Use sysfs (and DEVPATH) to make sure the
- * device (and this configuration!) are still present.
- */
 static int usb_uevent(struct device *dev, char **envp, int num_envp,
                       char *buffer, int buffer_size)
 {
-        struct usb_interface *intf;
         struct usb_device *usb_dev;
-        struct usb_host_interface *alt;
         int i = 0;
         int length = 0;
 
@@ -600,13 +587,11 @@ static int usb_uevent(struct device *dev, char **envp, int num_envp,
         /* driver is often null here; dev_dbg() would oops */
         pr_debug ("usb %s: uevent\n", dev->bus_id);
 
-        if (is_usb_device(dev)) {
+        if (is_usb_device(dev))
                 usb_dev = to_usb_device(dev);
-                alt = NULL;
-        } else {
-                intf = to_usb_interface(dev);
+        else {
+                struct usb_interface *intf = to_usb_interface(dev);
                 usb_dev = interface_to_usbdev(intf);
-                alt = intf->cur_altsetting;
         }
 
         if (usb_dev->devnum < 0) {
@@ -621,9 +606,7 @@ static int usb_uevent(struct device *dev, char **envp, int num_envp,
 #ifdef  CONFIG_USB_DEVICEFS
         /* If this is available, userspace programs can directly read
          * all the device descriptors we don't tell them about.  Or
-         * even act as usermode drivers.
-         *
-         * FIXME reduce hardwired intelligence here
+         * act as usermode drivers.
          */
         if (add_uevent_var(envp, num_envp, &i,
                            buffer, buffer_size, &length,
@@ -650,44 +633,29 @@ static int usb_uevent(struct device *dev, char **envp, int num_envp,
                            usb_dev->descriptor.bDeviceProtocol))
                 return -ENOMEM;
 
-        if (!is_usb_device(dev)) {
-
-                if (add_uevent_var(envp, num_envp, &i,
+        if (add_uevent_var(envp, num_envp, &i,
                            buffer, buffer_size, &length,
-                           "INTERFACE=%d/%d/%d",
-                           alt->desc.bInterfaceClass,
-                           alt->desc.bInterfaceSubClass,
-                           alt->desc.bInterfaceProtocol))
-                        return -ENOMEM;
+                           "BUSNUM=%03d",
+                           usb_dev->bus->busnum))
+                return -ENOMEM;
 
-                if (add_uevent_var(envp, num_envp, &i,
+        if (add_uevent_var(envp, num_envp, &i,
                            buffer, buffer_size, &length,
-                           "MODALIAS=usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X",
-                           le16_to_cpu(usb_dev->descriptor.idVendor),
-                           le16_to_cpu(usb_dev->descriptor.idProduct),
-                           le16_to_cpu(usb_dev->descriptor.bcdDevice),
-                           usb_dev->descriptor.bDeviceClass,
-                           usb_dev->descriptor.bDeviceSubClass,
-                           usb_dev->descriptor.bDeviceProtocol,
-                           alt->desc.bInterfaceClass,
-                           alt->desc.bInterfaceSubClass,
-                           alt->desc.bInterfaceProtocol))
-                        return -ENOMEM;
-        }
+                           "DEVNUM=%03d",
+                           usb_dev->devnum))
+                return -ENOMEM;
 
         envp[i] = NULL;
-
         return 0;
 }
 
 #else
 
 static int usb_uevent(struct device *dev, char **envp,
-                        int num_envp, char *buffer, int buffer_size)
+                      int num_envp, char *buffer, int buffer_size)
 {
         return -ENODEV;
 }
-
 #endif  /* CONFIG_HOTPLUG */
 
 /**
@@ -872,8 +840,10 @@ static int usb_resume_device(struct usb_device *udev)
 
 done:
         // dev_dbg(&udev->dev, "%s: status %d\n", __FUNCTION__, status);
-        if (status == 0)
+        if (status == 0) {
+                udev->autoresume_disabled = 0;
                 udev->dev.power.power_state.event = PM_EVENT_ON;
+        }
         return status;
 }
 
@@ -962,6 +932,7 @@ static int autosuspend_check(struct usb_device *udev)
 {
         int                     i;
         struct usb_interface    *intf;
+        unsigned long           suspend_time;
 
         /* For autosuspend, fail fast if anything is in use or autosuspend
          * is disabled.  Also fail if any interfaces require remote wakeup
@@ -970,9 +941,10 @@ static int autosuspend_check(struct usb_device *udev)
         udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
         if (udev->pm_usage_cnt > 0)
                 return -EBUSY;
-        if (!udev->autosuspend_delay)
+        if (udev->autosuspend_delay < 0 || udev->autosuspend_disabled)
                 return -EPERM;
 
+        suspend_time = udev->last_busy + udev->autosuspend_delay;
         if (udev->actconfig) {
                 for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
                         intf = udev->actconfig->interface[i];
@@ -988,6 +960,24 @@ static int autosuspend_check(struct usb_device *udev)
                         }
                 }
         }
+
+        /* If everything is okay but the device hasn't been idle for long
+         * enough, queue a delayed autosuspend request.
+         */
+        if (time_after(suspend_time, jiffies)) {
+                if (!timer_pending(&udev->autosuspend.timer)) {
+
+                        /* The value of jiffies may change between the
+                         * time_after() comparison above and the subtraction
+                         * below.  That's okay; the system behaves sanely
+                         * when a timer is registered for the present moment
+                         * or for the past.
+                         */
+                        queue_delayed_work(ksuspend_usb_wq, &udev->autosuspend,
+                                        suspend_time - jiffies);
+                        }
+                return -EAGAIN;
+        }
         return 0;
 }
 
@@ -1033,26 +1023,25 @@ static int autosuspend_check(struct usb_device *udev)
  *
  * This routine can run only in process context.
  */
-int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
+static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
 {
         int                     status = 0;
         int                     i = 0;
         struct usb_interface    *intf;
         struct usb_device       *parent = udev->parent;
 
-        cancel_delayed_work(&udev->autosuspend);
-        if (udev->state == USB_STATE_NOTATTACHED)
-                return 0;
-        if (udev->state == USB_STATE_SUSPENDED)
-                return 0;
+        if (udev->state == USB_STATE_NOTATTACHED ||
+                        udev->state == USB_STATE_SUSPENDED)
+                goto done;
 
         udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
 
         if (udev->auto_pm) {
                 status = autosuspend_check(udev);
                 if (status < 0)
-                        return status;
+                        goto done;
         }
+        cancel_delayed_work(&udev->autosuspend);
 
         /* Suspend all the interfaces and then udev itself */
         if (udev->actconfig) {
@@ -1077,6 +1066,7 @@ int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
         } else if (parent)
                 usb_autosuspend_device(parent);
 
+ done:
         // dev_dbg(&udev->dev, "%s: status %d\n", __FUNCTION__, status);
         return status;
 }
@@ -1109,7 +1099,7 @@ int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
  *
  * This routine can run only in process context.
  */
-int usb_resume_both(struct usb_device *udev)
+static int usb_resume_both(struct usb_device *udev)
 {
         int                     status = 0;
         int                     i;
@@ -1117,11 +1107,17 @@ int usb_resume_both(struct usb_device *udev)
         struct usb_device       *parent = udev->parent;
 
         cancel_delayed_work(&udev->autosuspend);
-        if (udev->state == USB_STATE_NOTATTACHED)
-                return -ENODEV;
+        if (udev->state == USB_STATE_NOTATTACHED) {
+                status = -ENODEV;
+                goto done;
+        }
 
         /* Propagate the resume up the tree, if necessary */
         if (udev->state == USB_STATE_SUSPENDED) {
+                if (udev->auto_pm && udev->autoresume_disabled) {
+                        status = -EPERM;
+                        goto done;
+                }
                 if (parent) {
                         status = usb_autoresume_device(parent);
                         if (status == 0) {
@@ -1167,6 +1163,7 @@ int usb_resume_both(struct usb_device *udev)
                 }
         }
 
+ done:
         // dev_dbg(&udev->dev, "%s: status %d\n", __FUNCTION__, status);
         return status;
 }
@@ -1181,20 +1178,34 @@ static int usb_autopm_do_device(struct usb_device *udev, int inc_usage_cnt)
         int     status = 0;
 
         usb_pm_lock(udev);
+        udev->auto_pm = 1;
         udev->pm_usage_cnt += inc_usage_cnt;
         WARN_ON(udev->pm_usage_cnt < 0);
         if (inc_usage_cnt >= 0 && udev->pm_usage_cnt > 0) {
-                udev->auto_pm = 1;
-                status = usb_resume_both(udev);
+                if (udev->state == USB_STATE_SUSPENDED)
+                        status = usb_resume_both(udev);
                 if (status != 0)
                         udev->pm_usage_cnt -= inc_usage_cnt;
-        } else if (inc_usage_cnt <= 0 && autosuspend_check(udev) == 0)
-                queue_delayed_work(ksuspend_usb_wq, &udev->autosuspend,
-                                udev->autosuspend_delay);
+                else if (inc_usage_cnt)
+                        udev->last_busy = jiffies;
+        } else if (inc_usage_cnt <= 0 && udev->pm_usage_cnt <= 0) {
+                if (inc_usage_cnt)
+                        udev->last_busy = jiffies;
+                status = usb_suspend_both(udev, PMSG_SUSPEND);
+        }
         usb_pm_unlock(udev);
         return status;
 }
 
+/* usb_autosuspend_work - callback routine to autosuspend a USB device */
+void usb_autosuspend_work(struct work_struct *work)
+{
+        struct usb_device *udev =
+                container_of(work, struct usb_device, autosuspend.work);
+
+        usb_autopm_do_device(udev, 0);
+}
+
 /**
  * usb_autosuspend_device - delayed autosuspend of a USB device and its interfaces
  * @udev: the usb_device to autosuspend
@@ -1286,15 +1297,20 @@ static int usb_autopm_do_interface(struct usb_interface *intf,
         if (intf->condition == USB_INTERFACE_UNBOUND)
                 status = -ENODEV;
         else {
+                udev->auto_pm = 1;
                 intf->pm_usage_cnt += inc_usage_cnt;
                 if (inc_usage_cnt >= 0 && intf->pm_usage_cnt > 0) {
-                        udev->auto_pm = 1;
-                        status = usb_resume_both(udev);
+                        if (udev->state == USB_STATE_SUSPENDED)
+                                status = usb_resume_both(udev);
                         if (status != 0)
                                 intf->pm_usage_cnt -= inc_usage_cnt;
-                } else if (inc_usage_cnt <= 0 && autosuspend_check(udev) == 0)
-                        queue_delayed_work(ksuspend_usb_wq, &udev->autosuspend,
-                                        udev->autosuspend_delay);
+                        else if (inc_usage_cnt)
+                                udev->last_busy = jiffies;
+                } else if (inc_usage_cnt <= 0 && intf->pm_usage_cnt <= 0) {
+                        if (inc_usage_cnt)
+                                udev->last_busy = jiffies;
+                        status = usb_suspend_both(udev, PMSG_SUSPEND);
+                }
         }
         usb_pm_unlock(udev);
         return status;
@@ -1353,11 +1369,14 @@ EXPORT_SYMBOL_GPL(usb_autopm_put_interface);
  * or @intf is unbound.  A typical example would be a character-device
  * driver when its device file is opened.
  *
- * The routine increments @intf's usage counter.  So long as the counter
- * is greater than 0, autosuspend will not be allowed for @intf or its
- * usb_device.  When the driver is finished using @intf it should call
- * usb_autopm_put_interface() to decrement the usage counter and queue
- * a delayed autosuspend request (if the counter is <= 0).
+ *
+ * The routine increments @intf's usage counter.  (However if the
+ * autoresume fails then the counter is re-decremented.)  So long as the
+ * counter is greater than 0, autosuspend will not be allowed for @intf
+ * or its usb_device.  When the driver is finished using @intf it should
+ * call usb_autopm_put_interface() to decrement the usage counter and
+ * queue a delayed autosuspend request (if the counter is <= 0).
+ *
  *
  * Note that @intf->pm_usage_cnt is owned by the interface driver.  The
  * core will not change its value other than the increment and decrement
@@ -1405,50 +1424,96 @@ int usb_autopm_set_interface(struct usb_interface *intf)
 }
 EXPORT_SYMBOL_GPL(usb_autopm_set_interface);
 
+#else
+
+void usb_autosuspend_work(struct work_struct *work)
+{}
+
 #endif /* CONFIG_USB_SUSPEND */
 
-static int usb_suspend(struct device *dev, pm_message_t message)
+/**
+ * usb_external_suspend_device - external suspend of a USB device and its interfaces
+ * @udev: the usb_device to suspend
+ * @msg: Power Management message describing this state transition
+ *
+ * This routine handles external suspend requests: ones not generated
+ * internally by a USB driver (autosuspend) but rather coming from the user
+ * (via sysfs) or the PM core (system sleep).  The suspend will be carried
+ * out regardless of @udev's usage counter or those of its interfaces,
+ * and regardless of whether or not remote wakeup is enabled.  Of course,
+ * interface drivers still have the option of failing the suspend (if
+ * there are unsuspended children, for example).
+ *
+ * The caller must hold @udev's device lock.
+ */
+int usb_external_suspend_device(struct usb_device *udev, pm_message_t msg)
 {
         int     status;
 
-        if (is_usb_device(dev)) {
-                struct usb_device *udev = to_usb_device(dev);
-
-                usb_pm_lock(udev);
-                udev->auto_pm = 0;
-                status = usb_suspend_both(udev, message);
-                usb_pm_unlock(udev);
-        } else
-                status = 0;
+        usb_pm_lock(udev);
+        udev->auto_pm = 0;
+        status = usb_suspend_both(udev, msg);
+        usb_pm_unlock(udev);
         return status;
 }
 
-static int usb_resume(struct device *dev)
+/**
+ * usb_external_resume_device - external resume of a USB device and its interfaces
+ * @udev: the usb_device to resume
+ *
+ * This routine handles external resume requests: ones not generated
+ * internally by a USB driver (autoresume) but rather coming from the user
+ * (via sysfs), the PM core (system resume), or the device itself (remote
+ * wakeup).  @udev's usage counter is unaffected.
+ *
+ * The caller must hold @udev's device lock.
+ */
+int usb_external_resume_device(struct usb_device *udev)
 {
         int     status;
 
-        if (is_usb_device(dev)) {
-                struct usb_device *udev = to_usb_device(dev);
-
-                usb_pm_lock(udev);
-                udev->auto_pm = 0;
-                status = usb_resume_both(udev);
-                usb_pm_unlock(udev);
+        usb_pm_lock(udev);
+        udev->auto_pm = 0;
+        status = usb_resume_both(udev);
+        usb_pm_unlock(udev);
 
-                /* Rebind drivers that had no suspend method? */
-        } else
-                status = 0;
+        /* Now that the device is awake, we can start trying to autosuspend
+         * it again. */
+        if (status == 0)
+                usb_try_autosuspend_device(udev);
         return status;
 }
 
+static int usb_suspend(struct device *dev, pm_message_t message)
+{
+        if (!is_usb_device(dev))        /* Ignore PM for interfaces */
+                return 0;
+        return usb_external_suspend_device(to_usb_device(dev), message);
+}
+
+static int usb_resume(struct device *dev)
+{
+        struct usb_device       *udev;
+
+        if (!is_usb_device(dev))        /* Ignore PM for interfaces */
+                return 0;
+        udev = to_usb_device(dev);
+        if (udev->autoresume_disabled)
+                return -EPERM;
+        return usb_external_resume_device(udev);
+}
+
+#else
+
+#define usb_suspend     NULL
+#define usb_resume      NULL
+
 #endif /* CONFIG_PM */
 
 struct bus_type usb_bus_type = {
         .name =         "usb",
         .match =        usb_device_match,
         .uevent =       usb_uevent,
-#ifdef CONFIG_PM
         .suspend =      usb_suspend,
         .resume =       usb_resume,
-#endif
 };
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index b26c19e8d19f..40cf882293e6 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -37,6 +37,7 @@
 #include <asm/irq.h>
 #include <asm/byteorder.h>
 #include <linux/platform_device.h>
+#include <linux/workqueue.h>
 
 #include <linux/usb.h>
 
@@ -544,6 +545,8 @@ void usb_hcd_poll_rh_status(struct usb_hcd *hcd)
         unsigned long   flags;
         char            buffer[4];      /* Any root hubs with > 31 ports? */
 
+        if (unlikely(!hcd->rh_registered))
+                return;
         if (!hcd->uses_new_polling && !hcd->status_urb)
                 return;
 
@@ -1296,14 +1299,26 @@ int hcd_bus_resume (struct usb_bus *bus)
         return status;
 }
 
+/* Workqueue routine for root-hub remote wakeup */
+static void hcd_resume_work(struct work_struct *work)
+{
+        struct usb_hcd *hcd = container_of(work, struct usb_hcd, wakeup_work);
+        struct usb_device *udev = hcd->self.root_hub;
+
+        usb_lock_device(udev);
+        usb_mark_last_busy(udev);
+        usb_external_resume_device(udev);
+        usb_unlock_device(udev);
+}
+
 /**
  * usb_hcd_resume_root_hub - called by HCD to resume its root hub 
  * @hcd: host controller for this root hub
  *
  * The USB host controller calls this function when its root hub is
  * suspended (with the remote wakeup feature enabled) and a remote
- * wakeup request is received.  It queues a request for khubd to
- * resume the root hub (that is, manage its downstream ports again).
+ * wakeup request is received.  The routine submits a workqueue request
+ * to resume the root hub (that is, manage its downstream ports again).
  */
 void usb_hcd_resume_root_hub (struct usb_hcd *hcd)
 {
@@ -1311,7 +1326,7 @@ void usb_hcd_resume_root_hub (struct usb_hcd *hcd)
 
         spin_lock_irqsave (&hcd_root_hub_lock, flags);
         if (hcd->rh_registered)
-                usb_resume_root_hub (hcd->self.root_hub);
+                queue_work(ksuspend_usb_wq, &hcd->wakeup_work);
         spin_unlock_irqrestore (&hcd_root_hub_lock, flags);
 }
 EXPORT_SYMBOL_GPL(usb_hcd_resume_root_hub);
@@ -1500,6 +1515,9 @@ struct usb_hcd *usb_create_hcd (const struct hc_driver *driver,
         init_timer(&hcd->rh_timer);
         hcd->rh_timer.function = rh_timer_func;
         hcd->rh_timer.data = (unsigned long) hcd;
+#ifdef CONFIG_PM
+        INIT_WORK(&hcd->wakeup_work, hcd_resume_work);
+#endif
 
         hcd->driver = driver;
         hcd->product_desc = (driver->product_desc) ? driver->product_desc :
@@ -1666,16 +1684,20 @@ void usb_remove_hcd(struct usb_hcd *hcd)
         hcd->rh_registered = 0;
         spin_unlock_irq (&hcd_root_hub_lock);
 
+#ifdef CONFIG_PM
+        flush_workqueue(ksuspend_usb_wq);
+#endif
+
         mutex_lock(&usb_bus_list_lock);
         usb_disconnect(&hcd->self.root_hub);
         mutex_unlock(&usb_bus_list_lock);
 
-        hcd->poll_rh = 0;
-        del_timer_sync(&hcd->rh_timer);
-
         hcd->driver->stop(hcd);
         hcd->state = HC_STATE_HALT;
 
+        hcd->poll_rh = 0;
+        del_timer_sync(&hcd->rh_timer);
+
         if (hcd->irq >= 0)
                 free_irq(hcd->irq, hcd);
         usb_deregister_bus(&hcd->self);
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 2a269ca20517..ef50fa494e47 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -68,6 +68,9 @@ struct usb_hcd {
 
         struct timer_list       rh_timer;       /* drives root-hub polling */
         struct urb              *status_urb;    /* the current status urb */
+#ifdef CONFIG_PM
+        struct work_struct      wakeup_work;    /* for remote wakeup */
+#endif
 
         /*
          * hardware info/state
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index b89a98e61323..bde29ab2b504 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -119,8 +119,7 @@ MODULE_PARM_DESC(use_both_schemes,
                 "first one fails");
 
 
-#ifdef  DEBUG
-static inline char *portspeed (int portstatus)
+static inline char *portspeed(int portstatus)
 {
         if (portstatus & (1 << USB_PORT_FEAT_HIGHSPEED))
                 return "480 Mb/s";
@@ -129,7 +128,6 @@ static inline char *portspeed (int portstatus)
         else
                 return "12 Mb/s";
 }
-#endif
 
 /* Note that hdev or one of its children must be locked! */
 static inline struct usb_hub *hdev_to_hub(struct usb_device *hdev)
@@ -1369,11 +1367,15 @@ int usb_new_device(struct usb_device *udev)
         }
 #endif
 
+        /* export the usbdev device-node for libusb */
+        udev->dev.devt = MKDEV(USB_DEVICE_MAJOR,
+                        (((udev->bus->busnum-1) * 128) + (udev->devnum-1)));
+
         /* Register the device.  The device driver is responsible
-         * for adding the device files to usbfs and sysfs and for
-         * configuring the device.
+         * for adding the device files to sysfs and for configuring
+         * the device.
          */
-        err = device_add (&udev->dev);
+        err = device_add(&udev->dev);
         if (err) {
                 dev_err(&udev->dev, "can't device_add, error %d\n", err);
                 goto fail;
@@ -1857,12 +1859,8 @@ static int remote_wakeup(struct usb_device *udev)
         usb_lock_device(udev);
         if (udev->state == USB_STATE_SUSPENDED) {
                 dev_dbg(&udev->dev, "usb %sresume\n", "wakeup-");
-                status = usb_autoresume_device(udev);
-
-                /* Give the interface drivers a chance to do something,
-                 * then autosuspend the device again. */
-                if (status == 0)
-                        usb_autosuspend_device(udev);
+                usb_mark_last_busy(udev);
+                status = usb_external_resume_device(udev);
         }
         usb_unlock_device(udev);
         return status;
@@ -1986,13 +1984,6 @@ static inline int remote_wakeup(struct usb_device *udev)
 #define hub_resume NULL
 #endif
 
-void usb_resume_root_hub(struct usb_device *hdev)
-{
-        struct usb_hub *hub = hdev_to_hub(hdev);
-
-        kick_khubd(hub);
-}
-
 
 /* USB 2.0 spec, 7.1.7.3 / fig 7-29:
  *
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 11dad22da41c..cddfc62c4611 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -662,7 +662,7 @@ static void usbfs_add_device(struct usb_device *dev)
         sprintf (name, "%03d", dev->devnum);
         dev->usbfs_dentry = fs_create_file (name, devmode | S_IFREG,
                                             dev->bus->usbfs_dentry, dev,
-                                            &usbfs_device_file_operations,
+                                            &usbdev_file_operations,
                                             devuid, devgid);
         if (dev->usbfs_dentry == NULL) {
                 err ("error creating usbfs device entry");
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 217a3d6d0a06..b7434787db5f 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -412,10 +412,24 @@ int usb_sg_init (
                 io->urbs [i]->status = -EINPROGRESS;
                 io->urbs [i]->actual_length = 0;
 
+                /*
+                 * Some systems need to revert to PIO when DMA is temporarily
+                 * unavailable.  For their sakes, both transfer_buffer and
+                 * transfer_dma are set when possible.  However this can only
+                 * work on systems without HIGHMEM, since DMA buffers located
+                 * in high memory are not directly addressable by the CPU for
+                 * PIO ... so when HIGHMEM is in use, transfer_buffer is NULL
+                 * to prevent stale pointers and to help spot bugs.
+                 */
                 if (dma) {
-                        /* hc may use _only_ transfer_dma */
                         io->urbs [i]->transfer_dma = sg_dma_address (sg + i);
                         len = sg_dma_len (sg + i);
+#ifdef CONFIG_HIGHMEM
+                        io->urbs[i]->transfer_buffer = NULL;
+#else
+                        io->urbs[i]->transfer_buffer =
+                                page_address(sg[i].page) + sg[i].offset;
+#endif
                 } else {
                         /* hc may use _only_ transfer_buffer */
                         io->urbs [i]->transfer_buffer =
@@ -1305,7 +1319,7 @@ int usb_reset_configuration(struct usb_device *dev)
         return 0;
 }
 
-static void release_interface(struct device *dev)
+void usb_release_interface(struct device *dev)
 {
         struct usb_interface *intf = to_usb_interface(dev);
         struct usb_interface_cache *intfc =
@@ -1315,6 +1329,67 @@ static void release_interface(struct device *dev)
         kfree(intf);
 }
 
+#ifdef  CONFIG_HOTPLUG
+static int usb_if_uevent(struct device *dev, char **envp, int num_envp,
+                 char *buffer, int buffer_size)
+{
+        struct usb_device *usb_dev;
+        struct usb_interface *intf;
+        struct usb_host_interface *alt;
+        int i = 0;
+        int length = 0;
+
+        if (!dev)
+                return -ENODEV;
+
+        /* driver is often null here; dev_dbg() would oops */
+        pr_debug ("usb %s: uevent\n", dev->bus_id);
+
+        intf = to_usb_interface(dev);
+        usb_dev = interface_to_usbdev(intf);
+        alt = intf->cur_altsetting;
+
+        if (add_uevent_var(envp, num_envp, &i,
+                   buffer, buffer_size, &length,
+                   "INTERFACE=%d/%d/%d",
+                   alt->desc.bInterfaceClass,
+                   alt->desc.bInterfaceSubClass,
+                   alt->desc.bInterfaceProtocol))
+                return -ENOMEM;
+
+        if (add_uevent_var(envp, num_envp, &i,
+                   buffer, buffer_size, &length,
+                   "MODALIAS=usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X",
+                   le16_to_cpu(usb_dev->descriptor.idVendor),
+                   le16_to_cpu(usb_dev->descriptor.idProduct),
+                   le16_to_cpu(usb_dev->descriptor.bcdDevice),
+                   usb_dev->descriptor.bDeviceClass,
+                   usb_dev->descriptor.bDeviceSubClass,
+                   usb_dev->descriptor.bDeviceProtocol,
+                   alt->desc.bInterfaceClass,
+                   alt->desc.bInterfaceSubClass,
+                   alt->desc.bInterfaceProtocol))
+                return -ENOMEM;
+
+        envp[i] = NULL;
+        return 0;
+}
+
+#else
+
+static int usb_if_uevent(struct device *dev, char **envp,
+                         int num_envp, char *buffer, int buffer_size)
+{
+        return -ENODEV;
+}
+#endif  /* CONFIG_HOTPLUG */
+
+struct device_type usb_if_device_type = {
+        .name =         "usb_interface",
+        .release =      usb_release_interface,
+        .uevent =       usb_if_uevent,
+};
+
 /*
  * usb_set_configuration - Makes a particular device setting be current
  * @dev: the device whose configuration is being updated
@@ -1349,7 +1424,7 @@ static void release_interface(struct device *dev)
  *
  * This call is synchronous. The calling context must be able to sleep,
  * must own the device lock, and must not hold the driver model's USB
- * bus rwsem; usb device driver probe() methods cannot use this routine.
+ * bus mutex; usb device driver probe() methods cannot use this routine.
  *
  * Returns zero on success, or else the status code returned by the
  * underlying call that failed.  On successful completion, each interface
@@ -1478,8 +1553,8 @@ free_interfaces:
                 intf->dev.parent = &dev->dev;
                 intf->dev.driver = NULL;
                 intf->dev.bus = &usb_bus_type;
+                intf->dev.type = &usb_if_device_type;
                 intf->dev.dma_mask = dev->dev.dma_mask;
-                intf->dev.release = release_interface;
                 device_initialize (&intf->dev);
                 mark_quiesced(intf);
                 sprintf (&intf->dev.bus_id[0], "%d-%s:%d.%d",
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index f08ec85a6d64..739f520908aa 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -42,7 +42,7 @@ static void usb_autosuspend_quirk(struct usb_device *udev)
 {
 #ifdef  CONFIG_USB_SUSPEND
         /* disable autosuspend, but allow the user to re-enable it via sysfs */
-        udev->autosuspend_delay = 0;
+        udev->autosuspend_disabled = 1;
 #endif
 }
 
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 311d5df80386..e7c982377488 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -11,6 +11,7 @@
 
 
 #include <linux/kernel.h>
+#include <linux/string.h>
 #include <linux/usb.h>
 #include "usb.h"
 
@@ -117,6 +118,16 @@ show_speed(struct device *dev, struct device_attribute *attr, char *buf)
 static DEVICE_ATTR(speed, S_IRUGO, show_speed, NULL);
 
 static ssize_t
+show_busnum(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct usb_device *udev;
+
+        udev = to_usb_device(dev);
+        return sprintf(buf, "%d\n", udev->bus->busnum);
+}
+static DEVICE_ATTR(busnum, S_IRUGO, show_busnum, NULL);
+
+static ssize_t
 show_devnum(struct device *dev, struct device_attribute *attr, char *buf)
 {
         struct usb_device *udev;
@@ -165,7 +176,7 @@ show_autosuspend(struct device *dev, struct device_attribute *attr, char *buf)
 {
         struct usb_device *udev = to_usb_device(dev);
 
-        return sprintf(buf, "%u\n", udev->autosuspend_delay / HZ);
+        return sprintf(buf, "%d\n", udev->autosuspend_delay / HZ);
 }
 
 static ssize_t
@@ -173,39 +184,115 @@ set_autosuspend(struct device *dev, struct device_attribute *attr,
                 const char *buf, size_t count)
 {
         struct usb_device *udev = to_usb_device(dev);
-        unsigned value, old;
+        int value;
 
-        if (sscanf(buf, "%u", &value) != 1 || value >= INT_MAX/HZ)
+        if (sscanf(buf, "%d", &value) != 1 || value >= INT_MAX/HZ ||
+                        value <= - INT_MAX/HZ)
                 return -EINVAL;
         value *= HZ;
 
-        old = udev->autosuspend_delay;
         udev->autosuspend_delay = value;
-        if (value > 0 && old == 0)
+        if (value >= 0)
                 usb_try_autosuspend_device(udev);
-
+        else {
+                if (usb_autoresume_device(udev) == 0)
+                        usb_autosuspend_device(udev);
+        }
         return count;
 }
 
 static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR,
                 show_autosuspend, set_autosuspend);
 
+static const char on_string[] = "on";
+static const char auto_string[] = "auto";
+static const char suspend_string[] = "suspend";
+
+static ssize_t
+show_level(struct device *dev, struct device_attribute *attr, char *buf)
+{
+        struct usb_device *udev = to_usb_device(dev);
+        const char *p = auto_string;
+
+        if (udev->state == USB_STATE_SUSPENDED) {
+                if (udev->autoresume_disabled)
+                        p = suspend_string;
+        } else {
+                if (udev->autosuspend_disabled)
+                        p = on_string;
+        }
+        return sprintf(buf, "%s\n", p);
+}
+
+static ssize_t
+set_level(struct device *dev, struct device_attribute *attr,
+                const char *buf, size_t count)
+{
+        struct usb_device *udev = to_usb_device(dev);
+        int len = count;
+        char *cp;
+        int rc = 0;
+
+        cp = memchr(buf, '\n', count);
+        if (cp)
+                len = cp - buf;
+
+        usb_lock_device(udev);
+
+        /* Setting the flags without calling usb_pm_lock is a subject to
+         * races, but who cares...
+         */
+        if (len == sizeof on_string - 1 &&
+                        strncmp(buf, on_string, len) == 0) {
+                udev->autosuspend_disabled = 1;
+                udev->autoresume_disabled = 0;
+                rc = usb_external_resume_device(udev);
+
+        } else if (len == sizeof auto_string - 1 &&
+                        strncmp(buf, auto_string, len) == 0) {
+                udev->autosuspend_disabled = 0;
+                udev->autoresume_disabled = 0;
+                rc = usb_external_resume_device(udev);
+
+        } else if (len == sizeof suspend_string - 1 &&
+                        strncmp(buf, suspend_string, len) == 0) {
+                udev->autosuspend_disabled = 0;
+                udev->autoresume_disabled = 1;
+                rc = usb_external_suspend_device(udev, PMSG_SUSPEND);
+
+        } else
+                rc = -EINVAL;
+
+        usb_unlock_device(udev);
+        return (rc < 0 ? rc : count);
+}
+
+static DEVICE_ATTR(level, S_IRUGO | S_IWUSR, show_level, set_level);
+
 static char power_group[] = "power";
 
 static int add_power_attributes(struct device *dev)
 {
         int rc = 0;
 
-        if (is_usb_device(dev))
+        if (is_usb_device(dev)) {
                 rc = sysfs_add_file_to_group(&dev->kobj,
                                 &dev_attr_autosuspend.attr,
                                 power_group);
+                if (rc == 0)
+                        rc = sysfs_add_file_to_group(&dev->kobj,
+                                        &dev_attr_level.attr,
+                                        power_group);
+        }
         return rc;
 }
 
 static void remove_power_attributes(struct device *dev)
 {
         sysfs_remove_file_from_group(&dev->kobj,
+                        &dev_attr_level.attr,
+                        power_group);
+        sysfs_remove_file_from_group(&dev->kobj,
                         &dev_attr_autosuspend.attr,
                         power_group);
 }
@@ -270,6 +357,7 @@ static struct attribute *dev_attrs[] = {
         &dev_attr_bNumConfigurations.attr,
         &dev_attr_bMaxPacketSize0.attr,
         &dev_attr_speed.attr,
+        &dev_attr_busnum.attr,
         &dev_attr_devnum.attr,
         &dev_attr_version.attr,
         &dev_attr_maxchild.attr,
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 54b42ce311c1..dfd1b5c87ca3 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -49,12 +49,13 @@ const char *usbcore_name = "usbcore";
 
 static int nousb;       /* Disable USB when built into kernel image */
 
-struct workqueue_struct *ksuspend_usb_wq;       /* For autosuspend */
+/* Workqueue for autosuspend and for remote wakeup of root hubs */
+struct workqueue_struct *ksuspend_usb_wq;
 
 #ifdef  CONFIG_USB_SUSPEND
 static int usb_autosuspend_delay = 2;           /* Default delay value,
                                                  * in seconds */
-module_param_named(autosuspend, usb_autosuspend_delay, uint, 0644);
+module_param_named(autosuspend, usb_autosuspend_delay, int, 0644);
 MODULE_PARM_DESC(autosuspend, "default autosuspend delay");
 
 #else
@@ -196,6 +197,11 @@ static void usb_release_dev(struct device *dev)
         kfree(udev);
 }
 
+struct device_type usb_device_type = {
+        .name =         "usb_device",
+        .release =      usb_release_dev,
+};
+
 #ifdef  CONFIG_PM
 
 static int ksuspend_usb_init(void)
@@ -211,27 +217,6 @@ static void ksuspend_usb_cleanup(void)
         destroy_workqueue(ksuspend_usb_wq);
 }
 
-#ifdef  CONFIG_USB_SUSPEND
-
-/* usb_autosuspend_work - callback routine to autosuspend a USB device */
-static void usb_autosuspend_work(struct work_struct *work)
-{
-        struct usb_device *udev =
-                container_of(work, struct usb_device, autosuspend.work);
-
-        usb_pm_lock(udev);
-        udev->auto_pm = 1;
-        usb_suspend_both(udev, PMSG_SUSPEND);
-        usb_pm_unlock(udev);
-}
-
-#else
-
-static void usb_autosuspend_work(struct work_struct *work)
-{}
-
-#endif  /* CONFIG_USB_SUSPEND */
-
 #else
 
 #define ksuspend_usb_init()     0
@@ -267,13 +252,10 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1)
 
         device_initialize(&dev->dev);
         dev->dev.bus = &usb_bus_type;
+        dev->dev.type = &usb_device_type;
         dev->dev.dma_mask = bus->controller->dma_mask;
-        dev->dev.release = usb_release_dev;
         dev->state = USB_STATE_ATTACHED;
 
-        /* This magic assignment distinguishes devices from interfaces */
-        dev->dev.platform_data = &usb_generic_driver;
-
         INIT_LIST_HEAD(&dev->ep0.urb_list);
         dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE;
         dev->ep0.desc.bDescriptorType = USB_DT_ENDPOINT;
@@ -902,9 +884,9 @@ static int __init usb_init(void)
         retval = usb_register(&usbfs_driver);
         if (retval)
                 goto driver_register_failed;
-        retval = usbdev_init();
+        retval = usb_devio_init();
         if (retval)
-                goto usbdevice_init_failed;
+                goto usb_devio_init_failed;
         retval = usbfs_init();
         if (retval)
                 goto fs_init_failed;
@@ -919,8 +901,8 @@ static int __init usb_init(void)
 hub_init_failed:
         usbfs_cleanup();
 fs_init_failed:
-        usbdev_cleanup();
-usbdevice_init_failed:
+        usb_devio_cleanup();
+usb_devio_init_failed:
         usb_deregister(&usbfs_driver);
 driver_register_failed:
         usb_major_cleanup();
@@ -947,7 +929,7 @@ static void __exit usb_exit(void)
         usb_major_cleanup();
         usbfs_cleanup();
         usb_deregister(&usbfs_driver);
-        usbdev_cleanup();
+        usb_devio_cleanup();
         usb_hub_cleanup();
         usb_host_cleanup();
         bus_unregister(&usb_bus_type);
diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
index 08b5a04e3755..bf2eb0dae2ec 100644
--- a/drivers/usb/core/usb.h
+++ b/drivers/usb/core/usb.h
@@ -21,7 +21,6 @@ extern char *usb_cache_string(struct usb_device *udev, int index);
 extern int usb_set_configuration(struct usb_device *dev, int configuration);
 
 extern void usb_kick_khubd(struct usb_device *dev);
-extern void usb_resume_root_hub(struct usb_device *dev);
 extern int usb_match_device(struct usb_device *dev,
                             const struct usb_device_id *id);
 
@@ -34,10 +33,12 @@ extern void usb_host_cleanup(void);
 
 #ifdef  CONFIG_PM
 
-extern int usb_suspend_both(struct usb_device *udev, pm_message_t msg);
-extern int usb_resume_both(struct usb_device *udev);
+extern void usb_autosuspend_work(struct work_struct *work);
 extern int usb_port_suspend(struct usb_device *dev);
 extern int usb_port_resume(struct usb_device *dev);
+extern int usb_external_suspend_device(struct usb_device *udev,
+                pm_message_t msg);
+extern int usb_external_resume_device(struct usb_device *udev);
 
 static inline void usb_pm_lock(struct usb_device *udev)
 {
@@ -51,11 +52,6 @@ static inline void usb_pm_unlock(struct usb_device *udev)
 
 #else
 
-#define usb_suspend_both(udev, msg)     0
-static inline int usb_resume_both(struct usb_device *udev)
-{
-        return 0;
-}
 #define usb_port_suspend(dev)           0
 #define usb_port_resume(dev)            0
 static inline void usb_pm_lock(struct usb_device *udev) {}
@@ -82,15 +78,13 @@ static inline int usb_autoresume_device(struct usb_device *udev)
 
 extern struct workqueue_struct *ksuspend_usb_wq;
 extern struct bus_type usb_bus_type;
+extern struct device_type usb_device_type;
+extern struct device_type usb_if_device_type;
 extern struct usb_device_driver usb_generic_driver;
 
-/* Here's how we tell apart devices and interfaces.  Luckily there's
- * no such thing as a platform USB device, so we can steal the use
- * of the platform_data field. */
-
 static inline int is_usb_device(const struct device *dev)
 {
-        return dev->platform_data == &usb_generic_driver;
+        return dev->type == &usb_device_type;
 }
 
 /* Do the same for device drivers and interface drivers. */
@@ -126,11 +120,11 @@ extern const char *usbcore_name;
 extern struct mutex usbfs_mutex;
 extern struct usb_driver usbfs_driver;
 extern const struct file_operations usbfs_devices_fops;
-extern const struct file_operations usbfs_device_file_operations;
+extern const struct file_operations usbdev_file_operations;
 extern void usbfs_conn_disc_event(void);
 
-extern int usbdev_init(void);
-extern void usbdev_cleanup(void);
+extern int usb_devio_init(void);
+extern void usb_devio_cleanup(void);
 
 struct dev_state {
         struct list_head list;      /* state list */
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 4097a86c4b5e..8065f2b53701 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -68,6 +68,27 @@ choice
            Many controller drivers are platform-specific; these
            often need board-specific hooks.
 
+config USB_GADGET_FSL_USB2
+        boolean "Freescale Highspeed USB DR Peripheral Controller"
+        depends on MPC834x || PPC_MPC831x
+        select USB_GADGET_DUALSPEED
+        help
+           Some of Freescale PowerPC processors have a High Speed
+           Dual-Role(DR) USB controller, which supports device mode.
+
+           The number of programmable endpoints is different through
+           SOC revisions.
+
+           Say "y" to link the driver statically, or "m" to build a
+           dynamically linked module called "fsl_usb2_udc" and force
+           all gadget drivers to also be dynamically linked.
+
+config USB_FSL_USB2
+        tristate
+        depends on USB_GADGET_FSL_USB2
+        default USB_GADGET
+        select USB_GADGET_SELECTED
+
 config USB_GADGET_NET2280
         boolean "NetChip 228x"
         depends on PCI
@@ -370,6 +391,7 @@ config USB_GADGETFS
 
 config USB_FILE_STORAGE
         tristate "File-backed Storage Gadget"
+        depends on BLOCK
         help
           The File-backed Storage Gadget acts as a USB Mass Storage
           disk drive.  As its storage repository it can use a regular
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index e71e086a1cfa..5db19396631c 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_USB_GOKU)		+= goku_udc.o
 obj-$(CONFIG_USB_OMAP)          += omap_udc.o
 obj-$(CONFIG_USB_LH7A40X)       += lh7a40x_udc.o
 obj-$(CONFIG_USB_AT91)          += at91_udc.o
+obj-$(CONFIG_USB_FSL_USB2)      += fsl_usb2_udc.o
 
 #
 # USB gadget drivers
diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 04e6b8508fb6..1dd8b57f4420 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -282,6 +282,9 @@ MODULE_PARM_DESC(host_addr, "Host Ethernet Address");
 #define DEV_CONFIG_CDC
 #endif
 
+#ifdef CONFIG_USB_GADGET_FSL_USB2
+#define DEV_CONFIG_CDC
+#endif
 
 /* For CDC-incapable hardware, choose the simple cdc subset.
  * Anything that talks bulk (without notable bugs) can do this.
@@ -1735,7 +1738,8 @@ enomem:
                 defer_kevent (dev, WORK_RX_MEMORY);
         if (retval) {
                 DEBUG (dev, "rx submit --> %d\n", retval);
-                dev_kfree_skb_any (skb);
+                if (skb)
+                        dev_kfree_skb_any(skb);
                 spin_lock(&dev->req_lock);
                 list_add (&req->list, &dev->rx_reqs);
                 spin_unlock(&dev->req_lock);
@@ -1766,7 +1770,6 @@ static void rx_complete (struct usb_ep *ep, struct usb_request *req)
                         break;
                 }
 
-                skb->dev = dev->net;
                 skb->protocol = eth_type_trans (skb, dev->net);
                 dev->stats.rx_packets++;
                 dev->stats.rx_bytes += skb->len;
diff --git a/drivers/usb/gadget/fsl_usb2_udc.c b/drivers/usb/gadget/fsl_usb2_udc.c
new file mode 100644
index 000000000000..157054ea3978
--- /dev/null
+++ b/drivers/usb/gadget/fsl_usb2_udc.c
@@ -0,0 +1,2500 @@
+/*
+ * Copyright (C) 2004-2007 Freescale Semicondutor, Inc. All rights reserved.
+ *
+ * Author: Li Yang <leoli@freescale.com>
+ *         Jiang Bo <tanya.jiang@freescale.com>
+ *
+ * Description:
+ * Freescale high-speed USB SOC DR module device controller driver.
+ * This can be found on MPC8349E/MPC8313E cpus.
+ * The driver is previously named as mpc_udc.  Based on bare board
+ * code from Dave Liu and Shlomi Gridish.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#undef VERBOSE
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/mm.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb_gadget.h>
+#include <linux/usb/otg.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+#include <linux/dmapool.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+#include <asm/dma.h>
+#include <asm/cacheflush.h>
+
+#include "fsl_usb2_udc.h"
+
+#define DRIVER_DESC     "Freescale High-Speed USB SOC Device Controller driver"
+#define DRIVER_AUTHOR   "Li Yang/Jiang Bo"
+#define DRIVER_VERSION  "Apr 20, 2007"
+
+#define DMA_ADDR_INVALID        (~(dma_addr_t)0)
+
+static const char driver_name[] = "fsl-usb2-udc";
+static const char driver_desc[] = DRIVER_DESC;
+
+volatile static struct usb_dr_device *dr_regs = NULL;
+volatile static struct usb_sys_interface *usb_sys_regs = NULL;
+
+/* it is initialized in probe()  */
+static struct fsl_udc *udc_controller = NULL;
+
+static const struct usb_endpoint_descriptor
+fsl_ep0_desc = {
+        .bLength =              USB_DT_ENDPOINT_SIZE,
+        .bDescriptorType =      USB_DT_ENDPOINT,
+        .bEndpointAddress =     0,
+        .bmAttributes =         USB_ENDPOINT_XFER_CONTROL,
+        .wMaxPacketSize =       USB_MAX_CTRL_PAYLOAD,
+};
+
+static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state);
+static int fsl_udc_resume(struct platform_device *pdev);
+static void fsl_ep_fifo_flush(struct usb_ep *_ep);
+
+#ifdef CONFIG_PPC32
+#define fsl_readl(addr)         in_le32(addr)
+#define fsl_writel(addr, val32) out_le32(val32, addr)
+#else
+#define fsl_readl(addr)         readl(addr)
+#define fsl_writel(addr, val32) writel(addr, val32)
+#endif
+
+/********************************************************************
+ *      Internal Used Function
+********************************************************************/
+/*-----------------------------------------------------------------
+ * done() - retire a request; caller blocked irqs
+ * @status : request status to be set, only works when
+ *      request is still in progress.
+ *--------------------------------------------------------------*/
+static void done(struct fsl_ep *ep, struct fsl_req *req, int status)
+{
+        struct fsl_udc *udc = NULL;
+        unsigned char stopped = ep->stopped;
+        struct ep_td_struct *curr_td, *next_td;
+        int j;
+
+        udc = (struct fsl_udc *)ep->udc;
+        /* Removed the req from fsl_ep->queue */
+        list_del_init(&req->queue);
+
+        /* req.status should be set as -EINPROGRESS in ep_queue() */
+        if (req->req.status == -EINPROGRESS)
+                req->req.status = status;
+        else
+                status = req->req.status;
+
+        /* Free dtd for the request */
+        next_td = req->head;
+        for (j = 0; j < req->dtd_count; j++) {
+                curr_td = next_td;
+                if (j != req->dtd_count - 1) {
+                        next_td = curr_td->next_td_virt;
+                }
+                dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma);
+        }
+
+        if (req->mapped) {
+                dma_unmap_single(ep->udc->gadget.dev.parent,
+                        req->req.dma, req->req.length,
+                        ep_is_in(ep)
+                                ? DMA_TO_DEVICE
+                                : DMA_FROM_DEVICE);
+                req->req.dma = DMA_ADDR_INVALID;
+                req->mapped = 0;
+        } else
+                dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
+                        req->req.dma, req->req.length,
+                        ep_is_in(ep)
+                                ? DMA_TO_DEVICE
+                                : DMA_FROM_DEVICE);
+
+        if (status && (status != -ESHUTDOWN))
+                VDBG("complete %s req %p stat %d len %u/%u",
+                        ep->ep.name, &req->req, status,
+                        req->req.actual, req->req.length);
+
+        ep->stopped = 1;
+
+        spin_unlock(&ep->udc->lock);
+        /* complete() is from gadget layer,
+         * eg fsg->bulk_in_complete() */
+        if (req->req.complete)
+                req->req.complete(&ep->ep, &req->req);
+
+        spin_lock(&ep->udc->lock);
+        ep->stopped = stopped;
+}
+
+/*-----------------------------------------------------------------
+ * nuke(): delete all requests related to this ep
+ * called with spinlock held
+ *--------------------------------------------------------------*/
+static void nuke(struct fsl_ep *ep, int status)
+{
+        ep->stopped = 1;
+
+        /* Flush fifo */
+        fsl_ep_fifo_flush(&ep->ep);
+
+        /* Whether this eq has request linked */
+        while (!list_empty(&ep->queue)) {
+                struct fsl_req *req = NULL;
+
+                req = list_entry(ep->queue.next, struct fsl_req, queue);
+                done(ep, req, status);
+        }
+}
+
+/*------------------------------------------------------------------
+        Internal Hardware related function
+ ------------------------------------------------------------------*/
+
+static int dr_controller_setup(struct fsl_udc *udc)
+{
+        unsigned int tmp = 0, portctrl = 0, ctrl = 0;
+        unsigned long timeout;
+#define FSL_UDC_RESET_TIMEOUT 1000
+
+        /* before here, make sure dr_regs has been initialized */
+        if (!udc)
+                return -EINVAL;
+
+        /* Stop and reset the usb controller */
+        tmp = fsl_readl(&dr_regs->usbcmd);
+        tmp &= ~USB_CMD_RUN_STOP;
+        fsl_writel(tmp, &dr_regs->usbcmd);
+
+        tmp = fsl_readl(&dr_regs->usbcmd);
+        tmp |= USB_CMD_CTRL_RESET;
+        fsl_writel(tmp, &dr_regs->usbcmd);
+
+        /* Wait for reset to complete */
+        timeout = jiffies + FSL_UDC_RESET_TIMEOUT;
+        while (fsl_readl(&dr_regs->usbcmd) & USB_CMD_CTRL_RESET) {
+                if (time_after(jiffies, timeout)) {
+                        ERR("udc reset timeout! \n");
+                        return -ETIMEDOUT;
+                }
+                cpu_relax();
+        }
+
+        /* Set the controller as device mode */
+        tmp = fsl_readl(&dr_regs->usbmode);
+        tmp |= USB_MODE_CTRL_MODE_DEVICE;
+        /* Disable Setup Lockout */
+        tmp |= USB_MODE_SETUP_LOCK_OFF;
+        fsl_writel(tmp, &dr_regs->usbmode);
+
+        /* Clear the setup status */
+        fsl_writel(0, &dr_regs->usbsts);
+
+        tmp = udc->ep_qh_dma;
+        tmp &= USB_EP_LIST_ADDRESS_MASK;
+        fsl_writel(tmp, &dr_regs->endpointlistaddr);
+
+        VDBG("vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x",
+                (int)udc->ep_qh, (int)tmp,
+                fsl_readl(&dr_regs->endpointlistaddr));
+
+        /* Config PHY interface */
+        portctrl = fsl_readl(&dr_regs->portsc1);
+        portctrl &= ~PORTSCX_PHY_TYPE_SEL;
+        switch (udc->phy_mode) {
+        case FSL_USB2_PHY_ULPI:
+                portctrl |= PORTSCX_PTS_ULPI;
+                break;
+        case FSL_USB2_PHY_UTMI:
+        case FSL_USB2_PHY_UTMI_WIDE:
+                portctrl |= PORTSCX_PTS_UTMI;
+                break;
+        case FSL_USB2_PHY_SERIAL:
+                portctrl |= PORTSCX_PTS_FSLS;
+                break;
+        default:
+                return -EINVAL;
+        }
+        fsl_writel(portctrl, &dr_regs->portsc1);
+
+        /* Config control enable i/o output, cpu endian register */
+        ctrl = __raw_readl(&usb_sys_regs->control);
+        ctrl |= USB_CTRL_IOENB;
+        __raw_writel(ctrl, &usb_sys_regs->control);
+
+#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
+        /* Turn on cache snooping hardware, since some PowerPC platforms
+         * wholly rely on hardware to deal with cache coherent. */
+
+        /* Setup Snooping for all the 4GB space */
+        tmp = SNOOP_SIZE_2GB;   /* starts from 0x0, size 2G */
+        __raw_writel(tmp, &usb_sys_regs->snoop1);
+        tmp |= 0x80000000;      /* starts from 0x8000000, size 2G */
+        __raw_writel(tmp, &usb_sys_regs->snoop2);
+#endif
+
+        return 0;
+}
+
+/* Enable DR irq and set controller to run state */
+static void dr_controller_run(struct fsl_udc *udc)
+{
+        u32 temp;
+
+        /* Enable DR irq reg */
+        temp = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN
+                | USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN
+                | USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN;
+
+        fsl_writel(temp, &dr_regs->usbintr);
+
+        /* Clear stopped bit */
+        udc->stopped = 0;
+
+        /* Set the controller as device mode */
+        temp = fsl_readl(&dr_regs->usbmode);
+        temp |= USB_MODE_CTRL_MODE_DEVICE;
+        fsl_writel(temp, &dr_regs->usbmode);
+
+        /* Set controller to Run */
+        temp = fsl_readl(&dr_regs->usbcmd);
+        temp |= USB_CMD_RUN_STOP;
+        fsl_writel(temp, &dr_regs->usbcmd);
+
+        return;
+}
+
+static void dr_controller_stop(struct fsl_udc *udc)
+{
+        unsigned int tmp;
+
+        /* disable all INTR */
+        fsl_writel(0, &dr_regs->usbintr);
+
+        /* Set stopped bit for isr */
+        udc->stopped = 1;
+
+        /* disable IO output */
+/*      usb_sys_regs->control = 0; */
+
+        /* set controller to Stop */
+        tmp = fsl_readl(&dr_regs->usbcmd);
+        tmp &= ~USB_CMD_RUN_STOP;
+        fsl_writel(tmp, &dr_regs->usbcmd);
+
+        return;
+}
+
+void dr_ep_setup(unsigned char ep_num, unsigned char dir, unsigned char ep_type)
+{
+        unsigned int tmp_epctrl = 0;
+
+        tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+        if (dir) {
+                if (ep_num)
+                        tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
+                tmp_epctrl |= EPCTRL_TX_ENABLE;
+                tmp_epctrl |= ((unsigned int)(ep_type)
+                                << EPCTRL_TX_EP_TYPE_SHIFT);
+        } else {
+                if (ep_num)
+                        tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
+                tmp_epctrl |= EPCTRL_RX_ENABLE;
+                tmp_epctrl |= ((unsigned int)(ep_type)
+                                << EPCTRL_RX_EP_TYPE_SHIFT);
+        }
+
+        fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
+}
+
+static void
+dr_ep_change_stall(unsigned char ep_num, unsigned char dir, int value)
+{
+        u32 tmp_epctrl = 0;
+
+        tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+
+        if (value) {
+                /* set the stall bit */
+                if (dir)
+                        tmp_epctrl |= EPCTRL_TX_EP_STALL;
+                else
+                        tmp_epctrl |= EPCTRL_RX_EP_STALL;
+        } else {
+                /* clear the stall bit and reset data toggle */
+                if (dir) {
+                        tmp_epctrl &= ~EPCTRL_TX_EP_STALL;
+                        tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
+                } else {
+                        tmp_epctrl &= ~EPCTRL_RX_EP_STALL;
+                        tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
+                }
+        }
+        fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
+}
+
+/* Get stall status of a specific ep
+   Return: 0: not stalled; 1:stalled */
+static int dr_ep_get_stall(unsigned char ep_num, unsigned char dir)
+{
+        u32 epctrl;
+
+        epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+        if (dir)
+                return (epctrl & EPCTRL_TX_EP_STALL) ? 1 : 0;
+        else
+                return (epctrl & EPCTRL_RX_EP_STALL) ? 1 : 0;
+}
+
+/********************************************************************
+        Internal Structure Build up functions
+********************************************************************/
+
+/*------------------------------------------------------------------
+* struct_ep_qh_setup(): set the Endpoint Capabilites field of QH
+ * @zlt: Zero Length Termination Select (1: disable; 0: enable)
+ * @mult: Mult field
+ ------------------------------------------------------------------*/
+static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num,
+                unsigned char dir, unsigned char ep_type,
+                unsigned int max_pkt_len,
+                unsigned int zlt, unsigned char mult)
+{
+        struct ep_queue_head *p_QH = &udc->ep_qh[2 * ep_num + dir];
+        unsigned int tmp = 0;
+
+        /* set the Endpoint Capabilites in QH */
+        switch (ep_type) {
+        case USB_ENDPOINT_XFER_CONTROL:
+                /* Interrupt On Setup (IOS). for control ep  */
+                tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
+                        | EP_QUEUE_HEAD_IOS;
+                break;
+        case USB_ENDPOINT_XFER_ISOC:
+                tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
+                        | (mult << EP_QUEUE_HEAD_MULT_POS);
+                break;
+        case USB_ENDPOINT_XFER_BULK:
+        case USB_ENDPOINT_XFER_INT:
+                tmp = max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS;
+                break;
+        default:
+                VDBG("error ep type is %d", ep_type);
+                return;
+        }
+        if (zlt)
+                tmp |= EP_QUEUE_HEAD_ZLT_SEL;
+        p_QH->max_pkt_length = cpu_to_le32(tmp);
+
+        return;
+}
+
+/* Setup qh structure and ep register for ep0. */
+static void ep0_setup(struct fsl_udc *udc)
+{
+        /* the intialization of an ep includes: fields in QH, Regs,
+         * fsl_ep struct */
+        struct_ep_qh_setup(udc, 0, USB_RECV, USB_ENDPOINT_XFER_CONTROL,
+                        USB_MAX_CTRL_PAYLOAD, 0, 0);
+        struct_ep_qh_setup(udc, 0, USB_SEND, USB_ENDPOINT_XFER_CONTROL,
+                        USB_MAX_CTRL_PAYLOAD, 0, 0);
+        dr_ep_setup(0, USB_RECV, USB_ENDPOINT_XFER_CONTROL);
+        dr_ep_setup(0, USB_SEND, USB_ENDPOINT_XFER_CONTROL);
+
+        return;
+
+}
+
+/***********************************************************************
+                Endpoint Management Functions
+***********************************************************************/
+
+/*-------------------------------------------------------------------------
+ * when configurations are set, or when interface settings change
+ * for example the do_set_interface() in gadget layer,
+ * the driver will enable or disable the relevant endpoints
+ * ep0 doesn't use this routine. It is always enabled.
+-------------------------------------------------------------------------*/
+static int fsl_ep_enable(struct usb_ep *_ep,
+                const struct usb_endpoint_descriptor *desc)
+{
+        struct fsl_udc *udc = NULL;
+        struct fsl_ep *ep = NULL;
+        unsigned short max = 0;
+        unsigned char mult = 0, zlt;
+        int retval = -EINVAL;
+        unsigned long flags = 0;
+
+        ep = container_of(_ep, struct fsl_ep, ep);
+
+        /* catch various bogus parameters */
+        if (!_ep || !desc || ep->desc
+                        || (desc->bDescriptorType != USB_DT_ENDPOINT))
+                return -EINVAL;
+
+        udc = ep->udc;
+
+        if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
+                return -ESHUTDOWN;
+
+        max = le16_to_cpu(desc->wMaxPacketSize);
+
+        /* Disable automatic zlp generation.  Driver is reponsible to indicate
+         * explicitly through req->req.zero.  This is needed to enable multi-td
+         * request. */
+        zlt = 1;
+
+        /* Assume the max packet size from gadget is always correct */
+        switch (desc->bmAttributes & 0x03) {
+        case USB_ENDPOINT_XFER_CONTROL:
+        case USB_ENDPOINT_XFER_BULK:
+        case USB_ENDPOINT_XFER_INT:
+                /* mult = 0.  Execute N Transactions as demonstrated by
+                 * the USB variable length packet protocol where N is
+                 * computed using the Maximum Packet Length (dQH) and
+                 * the Total Bytes field (dTD) */
+                mult = 0;
+                break;
+        case USB_ENDPOINT_XFER_ISOC:
+                /* Calculate transactions needed for high bandwidth iso */
+                mult = (unsigned char)(1 + ((max >> 11) & 0x03));
+                max = max & 0x8ff;      /* bit 0~10 */
+                /* 3 transactions at most */
+                if (mult > 3)
+                        goto en_done;
+                break;
+        default:
+                goto en_done;
+        }
+
+        spin_lock_irqsave(&udc->lock, flags);
+        ep->ep.maxpacket = max;
+        ep->desc = desc;
+        ep->stopped = 0;
+
+        /* Controller related setup */
+        /* Init EPx Queue Head (Ep Capabilites field in QH
+         * according to max, zlt, mult) */
+        struct_ep_qh_setup(udc, (unsigned char) ep_index(ep),
+                        (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
+                                        ?  USB_SEND : USB_RECV),
+                        (unsigned char) (desc->bmAttributes
+                                        & USB_ENDPOINT_XFERTYPE_MASK),
+                        max, zlt, mult);
+
+        /* Init endpoint ctrl register */
+        dr_ep_setup((unsigned char) ep_index(ep),
+                        (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
+                                        ? USB_SEND : USB_RECV),
+                        (unsigned char) (desc->bmAttributes
+                                        & USB_ENDPOINT_XFERTYPE_MASK));
+
+        spin_unlock_irqrestore(&udc->lock, flags);
+        retval = 0;
+
+        VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name,
+                        ep->desc->bEndpointAddress & 0x0f,
+                        (desc->bEndpointAddress & USB_DIR_IN)
+                                ? "in" : "out", max);
+en_done:
+        return retval;
+}
+
+/*---------------------------------------------------------------------
+ * @ep : the ep being unconfigured. May not be ep0
+ * Any pending and uncomplete req will complete with status (-ESHUTDOWN)
+*---------------------------------------------------------------------*/
+static int fsl_ep_disable(struct usb_ep *_ep)
+{
+        struct fsl_udc *udc = NULL;
+        struct fsl_ep *ep = NULL;
+        unsigned long flags = 0;
+        u32 epctrl;
+        int ep_num;
+
+        ep = container_of(_ep, struct fsl_ep, ep);
+        if (!_ep || !ep->desc) {
+                VDBG("%s not enabled", _ep ? ep->ep.name : NULL);
+                return -EINVAL;
+        }
+
+        /* disable ep on controller */
+        ep_num = ep_index(ep);
+        epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+        if (ep_is_in(ep))
+                epctrl &= ~EPCTRL_TX_ENABLE;
+        else
+                epctrl &= ~EPCTRL_RX_ENABLE;
+        fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+
+        udc = (struct fsl_udc *)ep->udc;
+        spin_lock_irqsave(&udc->lock, flags);
+
+        /* nuke all pending requests (does flush) */
+        nuke(ep, -ESHUTDOWN);
+
+        ep->desc = 0;
+        ep->stopped = 1;
+        spin_unlock_irqrestore(&udc->lock, flags);
+
+        VDBG("disabled %s OK", _ep->name);
+        return 0;
+}
+
+/*---------------------------------------------------------------------
+ * allocate a request object used by this endpoint
+ * the main operation is to insert the req->queue to the eq->queue
+ * Returns the request, or null if one could not be allocated
+*---------------------------------------------------------------------*/
+static struct usb_request *
+fsl_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
+{
+        struct fsl_req *req = NULL;
+
+        req = kzalloc(sizeof *req, gfp_flags);
+        if (!req)
+                return NULL;
+
+        req->req.dma = DMA_ADDR_INVALID;
+        INIT_LIST_HEAD(&req->queue);
+
+        return &req->req;
+}
+
+static void fsl_free_request(struct usb_ep *_ep, struct usb_request *_req)
+{
+        struct fsl_req *req = NULL;
+
+        req = container_of(_req, struct fsl_req, req);
+
+        if (_req)
+                kfree(req);
+}
+
+/*------------------------------------------------------------------
+ * Allocate an I/O buffer
+*---------------------------------------------------------------------*/
+static void *fsl_alloc_buffer(struct usb_ep *_ep, unsigned bytes,
+                dma_addr_t *dma, gfp_t gfp_flags)
+{
+        struct fsl_ep *ep;
+
+        if (!_ep)
+                return NULL;
+
+        ep = container_of(_ep, struct fsl_ep, ep);
+
+        return dma_alloc_coherent(ep->udc->gadget.dev.parent,
+                        bytes, dma, gfp_flags);
+}
+
+/*------------------------------------------------------------------
+ * frees an i/o buffer
+*---------------------------------------------------------------------*/
+static void fsl_free_buffer(struct usb_ep *_ep, void *buf,
+                dma_addr_t dma, unsigned bytes)
+{
+        struct fsl_ep *ep;
+
+        if (!_ep)
+                return NULL;
+
+        ep = container_of(_ep, struct fsl_ep, ep);
+
+        dma_free_coherent(ep->udc->gadget.dev.parent, bytes, buf, dma);
+}
+
+/*-------------------------------------------------------------------------*/
+static int fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req)
+{
+        int i = ep_index(ep) * 2 + ep_is_in(ep);
+        u32 temp, bitmask, tmp_stat;
+        struct ep_queue_head *dQH = &ep->udc->ep_qh[i];
+
+        /* VDBG("QH addr Register 0x%8x", dr_regs->endpointlistaddr);
+        VDBG("ep_qh[%d] addr is 0x%8x", i, (u32)&(ep->udc->ep_qh[i])); */
+
+        bitmask = ep_is_in(ep)
+                ? (1 << (ep_index(ep) + 16))
+                : (1 << (ep_index(ep)));
+
+        /* check if the pipe is empty */
+        if (!(list_empty(&ep->queue))) {
+                /* Add td to the end */
+                struct fsl_req *lastreq;
+                lastreq = list_entry(ep->queue.prev, struct fsl_req, queue);
+                lastreq->tail->next_td_ptr =
+                        cpu_to_le32(req->head->td_dma & DTD_ADDR_MASK);
+                /* Read prime bit, if 1 goto done */
+                if (fsl_readl(&dr_regs->endpointprime) & bitmask)
+                        goto out;
+
+                do {
+                        /* Set ATDTW bit in USBCMD */
+                        temp = fsl_readl(&dr_regs->usbcmd);
+                        fsl_writel(temp | USB_CMD_ATDTW, &dr_regs->usbcmd);
+
+                        /* Read correct status bit */
+                        tmp_stat = fsl_readl(&dr_regs->endptstatus) & bitmask;
+
+                } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_ATDTW));
+
+                /* Write ATDTW bit to 0 */
+                temp = fsl_readl(&dr_regs->usbcmd);
+                fsl_writel(temp & ~USB_CMD_ATDTW, &dr_regs->usbcmd);
+
+                if (tmp_stat)
+                        goto out;
+        }
+
+        /* Write dQH next pointer and terminate bit to 0 */
+        temp = req->head->td_dma & EP_QUEUE_HEAD_NEXT_POINTER_MASK;
+        dQH->next_dtd_ptr = cpu_to_le32(temp);
+
+        /* Clear active and halt bit */
+        temp = cpu_to_le32(~(EP_QUEUE_HEAD_STATUS_ACTIVE
+                        | EP_QUEUE_HEAD_STATUS_HALT));
+        dQH->size_ioc_int_sts &= temp;
+
+        /* Prime endpoint by writing 1 to ENDPTPRIME */
+        temp = ep_is_in(ep)
+                ? (1 << (ep_index(ep) + 16))
+                : (1 << (ep_index(ep)));
+        fsl_writel(temp, &dr_regs->endpointprime);
+out:
+        return 0;
+}
+
+/* Fill in the dTD structure
+ * @req: request that the transfer belongs to
+ * @length: return actually data length of the dTD
+ * @dma: return dma address of the dTD
+ * @is_last: return flag if it is the last dTD of the request
+ * return: pointer to the built dTD */
+static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length,
+                dma_addr_t *dma, int *is_last)
+{
+        u32 swap_temp;
+        struct ep_td_struct *dtd;
+
+        /* how big will this transfer be? */
+        *length = min(req->req.length - req->req.actual,
+                        (unsigned)EP_MAX_LENGTH_TRANSFER);
+
+        dtd = dma_pool_alloc(udc_controller->td_pool, GFP_KERNEL, dma);
+        if (dtd == NULL)
+                return dtd;
+
+        dtd->td_dma = *dma;
+        /* Clear reserved field */
+        swap_temp = cpu_to_le32(dtd->size_ioc_sts);
+        swap_temp &= ~DTD_RESERVED_FIELDS;
+        dtd->size_ioc_sts = cpu_to_le32(swap_temp);
+
+        /* Init all of buffer page pointers */
+        swap_temp = (u32) (req->req.dma + req->req.actual);
+        dtd->buff_ptr0 = cpu_to_le32(swap_temp);
+        dtd->buff_ptr1 = cpu_to_le32(swap_temp + 0x1000);
+        dtd->buff_ptr2 = cpu_to_le32(swap_temp + 0x2000);
+        dtd->buff_ptr3 = cpu_to_le32(swap_temp + 0x3000);
+        dtd->buff_ptr4 = cpu_to_le32(swap_temp + 0x4000);
+
+        req->req.actual += *length;
+
+        /* zlp is needed if req->req.zero is set */
+        if (req->req.zero) {
+                if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0)
+                        *is_last = 1;
+                else
+                        *is_last = 0;
+        } else if (req->req.length == req->req.actual)
+                *is_last = 1;
+        else
+                *is_last = 0;
+
+        if ((*is_last) == 0)
+                VDBG("multi-dtd request!\n");
+        /* Fill in the transfer size; set active bit */
+        swap_temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE);
+
+        /* Enable interrupt for the last dtd of a request */
+        if (*is_last && !req->req.no_interrupt)
+                swap_temp |= DTD_IOC;
+
+        dtd->size_ioc_sts = cpu_to_le32(swap_temp);
+
+        mb();
+
+        VDBG("length = %d address= 0x%x", *length, (int)*dma);
+
+        return dtd;
+}
+
+/* Generate dtd chain for a request */
+static int fsl_req_to_dtd(struct fsl_req *req)
+{
+        unsigned        count;
+        int             is_last;
+        int             is_first =1;
+        struct ep_td_struct     *last_dtd = NULL, *dtd;
+        dma_addr_t dma;
+
+        do {
+                dtd = fsl_build_dtd(req, &count, &dma, &is_last);
+                if (dtd == NULL)
+                        return -ENOMEM;
+
+                if (is_first) {
+                        is_first = 0;
+                        req->head = dtd;
+                } else {
+                        last_dtd->next_td_ptr = cpu_to_le32(dma);
+                        last_dtd->next_td_virt = dtd;
+                }
+                last_dtd = dtd;
+
+                req->dtd_count++;
+        } while (!is_last);
+
+        dtd->next_td_ptr = cpu_to_le32(DTD_NEXT_TERMINATE);
+
+        req->tail = dtd;
+
+        return 0;
+}
+
+/* queues (submits) an I/O request to an endpoint */
+static int
+fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+{
+        struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
+        struct fsl_req *req = container_of(_req, struct fsl_req, req);
+        struct fsl_udc *udc;
+        unsigned long flags;
+        int is_iso = 0;
+
+        /* catch various bogus parameters */
+        if (!_req || !req->req.complete || !req->req.buf
+                        || !list_empty(&req->queue)) {
+                VDBG("%s, bad params\n", __FUNCTION__);
+                return -EINVAL;
+        }
+        if (!_ep || (!ep->desc && ep_index(ep))) {
+                VDBG("%s, bad ep\n", __FUNCTION__);
+                return -EINVAL;
+        }
+        if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+                if (req->req.length > ep->ep.maxpacket)
+                        return -EMSGSIZE;
+                is_iso = 1;
+        }
+
+        udc = ep->udc;
+        if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
+                return -ESHUTDOWN;
+
+        req->ep = ep;
+
+        /* map virtual address to hardware */
+        if (req->req.dma == DMA_ADDR_INVALID) {
+                req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
+                                        req->req.buf,
+                                        req->req.length, ep_is_in(ep)
+                                                ? DMA_TO_DEVICE
+                                                : DMA_FROM_DEVICE);
+                req->mapped = 1;
+        } else {
+                dma_sync_single_for_device(ep->udc->gadget.dev.parent,
+                                        req->req.dma, req->req.length,
+                                        ep_is_in(ep)
+                                                ? DMA_TO_DEVICE
+                                                : DMA_FROM_DEVICE);
+                req->mapped = 0;
+        }
+
+        req->req.status = -EINPROGRESS;
+        req->req.actual = 0;
+        req->dtd_count = 0;
+
+        spin_lock_irqsave(&udc->lock, flags);
+
+        /* build dtds and push them to device queue */
+        if (!fsl_req_to_dtd(req)) {
+                fsl_queue_td(ep, req);
+        } else {
+                spin_unlock_irqrestore(&udc->lock, flags);
+                return -ENOMEM;
+        }
+
+        /* Update ep0 state */
+        if ((ep_index(ep) == 0))
+                udc->ep0_state = DATA_STATE_XMIT;
+
+        /* irq handler advances the queue */
+        if (req != NULL)
+                list_add_tail(&req->queue, &ep->queue);
+        spin_unlock_irqrestore(&udc->lock, flags);
+
+        return 0;
+}
+
+/* dequeues (cancels, unlinks) an I/O request from an endpoint */
+static int fsl_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+        struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
+        struct fsl_req *req;
+        unsigned long flags;
+        int ep_num, stopped, ret = 0;
+        u32 epctrl;
+
+        if (!_ep || !_req)
+                return -EINVAL;
+
+        spin_lock_irqsave(&ep->udc->lock, flags);
+        stopped = ep->stopped;
+
+        /* Stop the ep before we deal with the queue */
+        ep->stopped = 1;
+        ep_num = ep_index(ep);
+        epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+        if (ep_is_in(ep))
+                epctrl &= ~EPCTRL_TX_ENABLE;
+        else
+                epctrl &= ~EPCTRL_RX_ENABLE;
+        fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+
+        /* make sure it's actually queued on this endpoint */
+        list_for_each_entry(req, &ep->queue, queue) {
+                if (&req->req == _req)
+                        break;
+        }
+        if (&req->req != _req) {
+                ret = -EINVAL;
+                goto out;
+        }
+
+        /* The request is in progress, or completed but not dequeued */
+        if (ep->queue.next == &req->queue) {
+                _req->status = -ECONNRESET;
+                fsl_ep_fifo_flush(_ep); /* flush current transfer */
+
+                /* The request isn't the last request in this ep queue */
+                if (req->queue.next != &ep->queue) {
+                        struct ep_queue_head *qh;
+                        struct fsl_req *next_req;
+
+                        qh = ep->qh;
+                        next_req = list_entry(req->queue.next, struct fsl_req,
+                                        queue);
+
+                        /* Point the QH to the first TD of next request */
+                        fsl_writel((u32) next_req->head, &qh->curr_dtd_ptr);
+                }
+
+                /* The request hasn't been processed, patch up the TD chain */
+        } else {
+                struct fsl_req *prev_req;
+
+                prev_req = list_entry(req->queue.prev, struct fsl_req, queue);
+                fsl_writel(fsl_readl(&req->tail->next_td_ptr),
+                                &prev_req->tail->next_td_ptr);
+
+        }
+
+        done(ep, req, -ECONNRESET);
+
+        /* Enable EP */
+out:    epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+        if (ep_is_in(ep))
+                epctrl |= EPCTRL_TX_ENABLE;
+        else
+                epctrl |= EPCTRL_RX_ENABLE;
+        fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+        ep->stopped = stopped;
+
+        spin_unlock_irqrestore(&ep->udc->lock, flags);
+        return ret;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*-----------------------------------------------------------------
+ * modify the endpoint halt feature
+ * @ep: the non-isochronous endpoint being stalled
+ * @value: 1--set halt  0--clear halt
+ * Returns zero, or a negative error code.
+*----------------------------------------------------------------*/
+static int fsl_ep_set_halt(struct usb_ep *_ep, int value)
+{
+        struct fsl_ep *ep = NULL;
+        unsigned long flags = 0;
+        int status = -EOPNOTSUPP;       /* operation not supported */
+        unsigned char ep_dir = 0, ep_num = 0;
+        struct fsl_udc *udc = NULL;
+
+        ep = container_of(_ep, struct fsl_ep, ep);
+        udc = ep->udc;
+        if (!_ep || !ep->desc) {
+                status = -EINVAL;
+                goto out;
+        }
+
+        if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+                status = -EOPNOTSUPP;
+                goto out;
+        }
+
+        /* Attempt to halt IN ep will fail if any transfer requests
+         * are still queue */
+        if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
+                status = -EAGAIN;
+                goto out;
+        }
+
+        status = 0;
+        ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
+        ep_num = (unsigned char)(ep_index(ep));
+        spin_lock_irqsave(&ep->udc->lock, flags);
+        dr_ep_change_stall(ep_num, ep_dir, value);
+        spin_unlock_irqrestore(&ep->udc->lock, flags);
+
+        if (ep_index(ep) == 0) {
+                udc->ep0_state = WAIT_FOR_SETUP;
+                udc->ep0_dir = 0;
+        }
+out:
+        VDBG(" %s %s halt stat %d", ep->ep.name,
+                        value ?  "set" : "clear", status);
+
+        return status;
+}
+
+static void fsl_ep_fifo_flush(struct usb_ep *_ep)
+{
+        struct fsl_ep *ep;
+        int ep_num, ep_dir;
+        u32 bits;
+        unsigned long timeout;
+#define FSL_UDC_FLUSH_TIMEOUT 1000
+
+        if (!_ep) {
+                return;
+        } else {
+                ep = container_of(_ep, struct fsl_ep, ep);
+                if (!ep->desc)
+                        return;
+        }
+        ep_num = ep_index(ep);
+        ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
+
+        if (ep_num == 0)
+                bits = (1 << 16) | 1;
+        else if (ep_dir == USB_SEND)
+                bits = 1 << (16 + ep_num);
+        else
+                bits = 1 << ep_num;
+
+        timeout = jiffies + FSL_UDC_FLUSH_TIMEOUT;
+        do {
+                fsl_writel(bits, &dr_regs->endptflush);
+
+                /* Wait until flush complete */
+                while (fsl_readl(&dr_regs->endptflush)) {
+                        if (time_after(jiffies, timeout)) {
+                                ERR("ep flush timeout\n");
+                                return;
+                        }
+                        cpu_relax();
+                }
+                /* See if we need to flush again */
+        } while (fsl_readl(&dr_regs->endptstatus) & bits);
+}
+
+static struct usb_ep_ops fsl_ep_ops = {
+        .enable = fsl_ep_enable,
+        .disable = fsl_ep_disable,
+
+        .alloc_request = fsl_alloc_request,
+        .free_request = fsl_free_request,
+
+        .alloc_buffer = fsl_alloc_buffer,
+        .free_buffer = fsl_free_buffer,
+
+        .queue = fsl_ep_queue,
+        .dequeue = fsl_ep_dequeue,
+
+        .set_halt = fsl_ep_set_halt,
+        .fifo_flush = fsl_ep_fifo_flush,        /* flush fifo */
+};
+
+/*-------------------------------------------------------------------------
+                Gadget Driver Layer Operations
+-------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------
+ * Get the current frame number (from DR frame_index Reg )
+ *----------------------------------------------------------------------*/
+static int fsl_get_frame(struct usb_gadget *gadget)
+{
+        return (int)(fsl_readl(&dr_regs->frindex) & USB_FRINDEX_MASKS);
+}
+
+/*-----------------------------------------------------------------------
+ * Tries to wake up the host connected to this gadget
+ -----------------------------------------------------------------------*/
+static int fsl_wakeup(struct usb_gadget *gadget)
+{
+        struct fsl_udc *udc = container_of(gadget, struct fsl_udc, gadget);
+        u32 portsc;
+
+        /* Remote wakeup feature not enabled by host */
+        if (!udc->remote_wakeup)
+                return -ENOTSUPP;
+
+        portsc = fsl_readl(&dr_regs->portsc1);
+        /* not suspended? */
+        if (!(portsc & PORTSCX_PORT_SUSPEND))
+                return 0;
+        /* trigger force resume */
+        portsc |= PORTSCX_PORT_FORCE_RESUME;
+        fsl_writel(portsc, &dr_regs->portsc1);
+        return 0;
+}
+
+static int can_pullup(struct fsl_udc *udc)
+{
+        return udc->driver && udc->softconnect && udc->vbus_active;
+}
+
+/* Notify controller that VBUS is powered, Called by whatever
+   detects VBUS sessions */
+static int fsl_vbus_session(struct usb_gadget *gadget, int is_active)
+{
+        struct fsl_udc  *udc;
+        unsigned long   flags;
+
+        udc = container_of(gadget, struct fsl_udc, gadget);
+        spin_lock_irqsave(&udc->lock, flags);
+        VDBG("VBUS %s\n", is_active ? "on" : "off");
+        udc->vbus_active = (is_active != 0);
+        if (can_pullup(udc))
+                fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
+                                &dr_regs->usbcmd);
+        else
+                fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
+                                &dr_regs->usbcmd);
+        spin_unlock_irqrestore(&udc->lock, flags);
+        return 0;
+}
+
+/* constrain controller's VBUS power usage
+ * This call is used by gadget drivers during SET_CONFIGURATION calls,
+ * reporting how much power the device may consume.  For example, this
+ * could affect how quickly batteries are recharged.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+#ifdef CONFIG_USB_OTG
+        struct fsl_udc *udc;
+
+        udc = container_of(gadget, struct fsl_udc, gadget);
+
+        if (udc->transceiver)
+                return otg_set_power(udc->transceiver, mA);
+#endif
+        return -ENOTSUPP;
+}
+
+/* Change Data+ pullup status
+ * this func is used by usb_gadget_connect/disconnet
+ */
+static int fsl_pullup(struct usb_gadget *gadget, int is_on)
+{
+        struct fsl_udc *udc;
+
+        udc = container_of(gadget, struct fsl_udc, gadget);
+        udc->softconnect = (is_on != 0);
+        if (can_pullup(udc))
+                fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
+                                &dr_regs->usbcmd);
+        else
+                fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
+                                &dr_regs->usbcmd);
+
+        return 0;
+}
+
+/* defined in usb_gadget.h */
+static struct usb_gadget_ops fsl_gadget_ops = {
+        .get_frame = fsl_get_frame,
+        .wakeup = fsl_wakeup,
+/*      .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */
+        .vbus_session = fsl_vbus_session,
+        .vbus_draw = fsl_vbus_draw,
+        .pullup = fsl_pullup,
+};
+
+/* Set protocol stall on ep0, protocol stall will automatically be cleared
+   on new transaction */
+static void ep0stall(struct fsl_udc *udc)
+{
+        u32 tmp;
+
+        /* must set tx and rx to stall at the same time */
+        tmp = fsl_readl(&dr_regs->endptctrl[0]);
+        tmp |= EPCTRL_TX_EP_STALL | EPCTRL_RX_EP_STALL;
+        fsl_writel(tmp, &dr_regs->endptctrl[0]);
+        udc->ep0_state = WAIT_FOR_SETUP;
+        udc->ep0_dir = 0;
+}
+
+/* Prime a status phase for ep0 */
+static int ep0_prime_status(struct fsl_udc *udc, int direction)
+{
+        struct fsl_req *req = udc->status_req;
+        struct fsl_ep *ep;
+        int status = 0;
+
+        if (direction == EP_DIR_IN)
+                udc->ep0_dir = USB_DIR_IN;
+        else
+                udc->ep0_dir = USB_DIR_OUT;
+
+        ep = &udc->eps[0];
+        udc->ep0_state = WAIT_FOR_OUT_STATUS;
+
+        req->ep = ep;
+        req->req.length = 0;
+        req->req.status = -EINPROGRESS;
+        req->req.actual = 0;
+        req->req.complete = NULL;
+        req->dtd_count = 0;
+
+        if (fsl_req_to_dtd(req) == 0)
+                status = fsl_queue_td(ep, req);
+        else
+                return -ENOMEM;
+
+        if (status)
+                ERR("Can't queue ep0 status request \n");
+        list_add_tail(&req->queue, &ep->queue);
+
+        return status;
+}
+
+static inline int udc_reset_ep_queue(struct fsl_udc *udc, u8 pipe)
+{
+        struct fsl_ep *ep = get_ep_by_pipe(udc, pipe);
+
+        if (!ep->name)
+                return 0;
+
+        nuke(ep, -ESHUTDOWN);
+
+        return 0;
+}
+
+/*
+ * ch9 Set address
+ */
+static void ch9setaddress(struct fsl_udc *udc, u16 value, u16 index, u16 length)
+{
+        /* Save the new address to device struct */
+        udc->device_address = (u8) value;
+        /* Update usb state */
+        udc->usb_state = USB_STATE_ADDRESS;
+        /* Status phase */
+        if (ep0_prime_status(udc, EP_DIR_IN))
+                ep0stall(udc);
+}
+
+/*
+ * ch9 Get status
+ */
+static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value,
+                u16 index, u16 length)
+{
+        u16 tmp = 0;            /* Status, cpu endian */
+
+        struct fsl_req *req;
+        struct fsl_ep *ep;
+        int status = 0;
+
+        ep = &udc->eps[0];
+
+        if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
+                /* Get device status */
+                tmp = 1 << USB_DEVICE_SELF_POWERED;
+                tmp |= udc->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP;
+        } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
+                /* Get interface status */
+                /* We don't have interface information in udc driver */
+                tmp = 0;
+        } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
+                /* Get endpoint status */
+                struct fsl_ep *target_ep;
+
+                target_ep = get_ep_by_pipe(udc, get_pipe_by_windex(index));
+
+                /* stall if endpoint doesn't exist */
+                if (!target_ep->desc)
+                        goto stall;
+                tmp = dr_ep_get_stall(ep_index(target_ep), ep_is_in(target_ep))
+                                << USB_ENDPOINT_HALT;
+        }
+
+        udc->ep0_dir = USB_DIR_IN;
+        /* Borrow the per device status_req */
+        req = udc->status_req;
+        /* Fill in the reqest structure */
+        *((u16 *) req->req.buf) = cpu_to_le16(tmp);
+        req->ep = ep;
+        req->req.length = 2;
+        req->req.status = -EINPROGRESS;
+        req->req.actual = 0;
+        req->req.complete = NULL;
+        req->dtd_count = 0;
+
+        /* prime the data phase */
+        if ((fsl_req_to_dtd(req) == 0))
+                status = fsl_queue_td(ep, req);
+        else                    /* no mem */
+                goto stall;
+
+        if (status) {
+                ERR("Can't respond to getstatus request \n");
+                goto stall;
+        }
+        list_add_tail(&req->queue, &ep->queue);
+        udc->ep0_state = DATA_STATE_XMIT;
+        return;
+stall:
+        ep0stall(udc);
+}
+
+static void setup_received_irq(struct fsl_udc *udc,
+                struct usb_ctrlrequest *setup)
+{
+        u16 wValue = le16_to_cpu(setup->wValue);
+        u16 wIndex = le16_to_cpu(setup->wIndex);
+        u16 wLength = le16_to_cpu(setup->wLength);
+
+        udc_reset_ep_queue(udc, 0);
+
+        switch (setup->bRequest) {
+                /* Request that need Data+Status phase from udc */
+        case USB_REQ_GET_STATUS:
+                if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_STANDARD))
+                                        != (USB_DIR_IN | USB_TYPE_STANDARD))
+                        break;
+                ch9getstatus(udc, setup->bRequestType, wValue, wIndex, wLength);
+                break;
+
+                /* Requests that need Status phase from udc */
+        case USB_REQ_SET_ADDRESS:
+                if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD
+                                                | USB_RECIP_DEVICE))
+                        break;
+                ch9setaddress(udc, wValue, wIndex, wLength);
+                break;
+
+                /* Handled by udc, no data, status by udc */
+        case USB_REQ_CLEAR_FEATURE:
+        case USB_REQ_SET_FEATURE:
+        {       /* status transaction */
+                int rc = -EOPNOTSUPP;
+
+                if ((setup->bRequestType & USB_RECIP_MASK)
+                                == USB_RECIP_ENDPOINT) {
+                        int pipe = get_pipe_by_windex(wIndex);
+                        struct fsl_ep *ep;
+
+                        if (wValue != 0 || wLength != 0 || pipe > udc->max_ep)
+                                break;
+                        ep = get_ep_by_pipe(udc, pipe);
+
+                        spin_unlock(&udc->lock);
+                        rc = fsl_ep_set_halt(&ep->ep,
+                                        (setup->bRequest == USB_REQ_SET_FEATURE)
+                                                ? 1 : 0);
+                        spin_lock(&udc->lock);
+
+                } else if ((setup->bRequestType & USB_RECIP_MASK)
+                                == USB_RECIP_DEVICE) {
+                        /* Note: The driver has not include OTG support yet.
+                         * This will be set when OTG support is added */
+                        if (!udc->gadget.is_otg)
+                                break;
+                        else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE)
+                                udc->gadget.b_hnp_enable = 1;
+                        else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT)
+                                udc->gadget.a_hnp_support = 1;
+                        else if (setup->bRequest ==
+                                        USB_DEVICE_A_ALT_HNP_SUPPORT)
+                                udc->gadget.a_alt_hnp_support = 1;
+                        rc = 0;
+                }
+                if (rc == 0) {
+                        if (ep0_prime_status(udc, EP_DIR_IN))
+                                ep0stall(udc);
+                }
+                break;
+        }
+                /* Requests handled by gadget */
+        default:
+                if (wLength) {
+                        /* Data phase from gadget, status phase from udc */
+                        udc->ep0_dir = (setup->bRequestType & USB_DIR_IN)
+                                        ?  USB_DIR_IN : USB_DIR_OUT;
+                        spin_unlock(&udc->lock);
+                        if (udc->driver->setup(&udc->gadget,
+                                        &udc->local_setup_buff) < 0)
+                                ep0stall(udc);
+                        spin_lock(&udc->lock);
+                        udc->ep0_state = (setup->bRequestType & USB_DIR_IN)
+                                        ?  DATA_STATE_XMIT : DATA_STATE_RECV;
+
+                } else {
+                        /* No data phase, IN status from gadget */
+                        udc->ep0_dir = USB_DIR_IN;
+                        spin_unlock(&udc->lock);
+                        if (udc->driver->setup(&udc->gadget,
+                                        &udc->local_setup_buff) < 0)
+                                ep0stall(udc);
+                        spin_lock(&udc->lock);
+                        udc->ep0_state = WAIT_FOR_OUT_STATUS;
+                }
+                break;
+        }
+}
+
+/* Process request for Data or Status phase of ep0
+ * prime status phase if needed */
+static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0,
+                struct fsl_req *req)
+{
+        if (udc->usb_state == USB_STATE_ADDRESS) {
+                /* Set the new address */
+                u32 new_address = (u32) udc->device_address;
+                fsl_writel(new_address << USB_DEVICE_ADDRESS_BIT_POS,
+                                &dr_regs->deviceaddr);
+        }
+
+        done(ep0, req, 0);
+
+        switch (udc->ep0_state) {
+        case DATA_STATE_XMIT:
+                /* receive status phase */
+                if (ep0_prime_status(udc, EP_DIR_OUT))
+                        ep0stall(udc);
+                break;
+        case DATA_STATE_RECV:
+                /* send status phase */
+                if (ep0_prime_status(udc, EP_DIR_IN))
+                        ep0stall(udc);
+                break;
+        case WAIT_FOR_OUT_STATUS:
+                udc->ep0_state = WAIT_FOR_SETUP;
+                break;
+        case WAIT_FOR_SETUP:
+                ERR("Unexpect ep0 packets \n");
+                break;
+        default:
+                ep0stall(udc);
+                break;
+        }
+}
+
+/* Tripwire mechanism to ensure a setup packet payload is extracted without
+ * being corrupted by another incoming setup packet */
+static void tripwire_handler(struct fsl_udc *udc, u8 ep_num, u8 *buffer_ptr)
+{
+        u32 temp;
+        struct ep_queue_head *qh;
+
+        qh = &udc->ep_qh[ep_num * 2 + EP_DIR_OUT];
+
+        /* Clear bit in ENDPTSETUPSTAT */
+        temp = fsl_readl(&dr_regs->endptsetupstat);
+        fsl_writel(temp | (1 << ep_num), &dr_regs->endptsetupstat);
+
+        /* while a hazard exists when setup package arrives */
+        do {
+                /* Set Setup Tripwire */
+                temp = fsl_readl(&dr_regs->usbcmd);
+                fsl_writel(temp | USB_CMD_SUTW, &dr_regs->usbcmd);
+
+                /* Copy the setup packet to local buffer */
+                memcpy(buffer_ptr, (u8 *) qh->setup_buffer, 8);
+        } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_SUTW));
+
+        /* Clear Setup Tripwire */
+        temp = fsl_readl(&dr_regs->usbcmd);
+        fsl_writel(temp & ~USB_CMD_SUTW, &dr_regs->usbcmd);
+}
+
+/* process-ep_req(): free the completed Tds for this req */
+static int process_ep_req(struct fsl_udc *udc, int pipe,
+                struct fsl_req *curr_req)
+{
+        struct ep_td_struct *curr_td;
+        int     td_complete, actual, remaining_length, j, tmp;
+        int     status = 0;
+        int     errors = 0;
+        struct  ep_queue_head *curr_qh = &udc->ep_qh[pipe];
+        int direction = pipe % 2;
+
+        curr_td = curr_req->head;
+        td_complete = 0;
+        actual = curr_req->req.length;
+
+        for (j = 0; j < curr_req->dtd_count; j++) {
+                remaining_length = (le32_to_cpu(curr_td->size_ioc_sts)
+                                        & DTD_PACKET_SIZE)
+                                >> DTD_LENGTH_BIT_POS;
+                actual -= remaining_length;
+
+                if ((errors = le32_to_cpu(curr_td->size_ioc_sts) &
+                                                DTD_ERROR_MASK)) {
+                        if (errors & DTD_STATUS_HALTED) {
+                                ERR("dTD error %08x QH=%d\n", errors, pipe);
+                                /* Clear the errors and Halt condition */
+                                tmp = le32_to_cpu(curr_qh->size_ioc_int_sts);
+                                tmp &= ~errors;
+                                curr_qh->size_ioc_int_sts = cpu_to_le32(tmp);
+                                status = -EPIPE;
+                                /* FIXME: continue with next queued TD? */
+
+                                break;
+                        }
+                        if (errors & DTD_STATUS_DATA_BUFF_ERR) {
+                                VDBG("Transfer overflow");
+                                status = -EPROTO;
+                                break;
+                        } else if (errors & DTD_STATUS_TRANSACTION_ERR) {
+                                VDBG("ISO error");
+                                status = -EILSEQ;
+                                break;
+                        } else
+                                ERR("Unknown error has occured (0x%x)!\r\n",
+                                        errors);
+
+                } else if (le32_to_cpu(curr_td->size_ioc_sts)
+                                & DTD_STATUS_ACTIVE) {
+                        VDBG("Request not complete");
+                        status = REQ_UNCOMPLETE;
+                        return status;
+                } else if (remaining_length) {
+                        if (direction) {
+                                VDBG("Transmit dTD remaining length not zero");
+                                status = -EPROTO;
+                                break;
+                        } else {
+                                td_complete++;
+                                break;
+                        }
+                } else {
+                        td_complete++;
+                        VDBG("dTD transmitted successful ");
+                }
+
+                if (j != curr_req->dtd_count - 1)
+                        curr_td = (struct ep_td_struct *)curr_td->next_td_virt;
+        }
+
+        if (status)
+                return status;
+
+        curr_req->req.actual = actual;
+
+        return 0;
+}
+
+/* Process a DTD completion interrupt */
+static void dtd_complete_irq(struct fsl_udc *udc)
+{
+        u32 bit_pos;
+        int i, ep_num, direction, bit_mask, status;
+        struct fsl_ep *curr_ep;
+        struct fsl_req *curr_req, *temp_req;
+
+        /* Clear the bits in the register */
+        bit_pos = fsl_readl(&dr_regs->endptcomplete);
+        fsl_writel(bit_pos, &dr_regs->endptcomplete);
+
+        if (!bit_pos)
+                return;
+
+        for (i = 0; i < udc->max_ep * 2; i++) {
+                ep_num = i >> 1;
+                direction = i % 2;
+
+                bit_mask = 1 << (ep_num + 16 * direction);
+
+                if (!(bit_pos & bit_mask))
+                        continue;
+
+                curr_ep = get_ep_by_pipe(udc, i);
+
+                /* If the ep is configured */
+                if (curr_ep->name == NULL) {
+                        WARN("Invalid EP?");
+                        continue;
+                }
+
+                /* process the req queue until an uncomplete request */
+                list_for_each_entry_safe(curr_req, temp_req, &curr_ep->queue,
+                                queue) {
+                        status = process_ep_req(udc, i, curr_req);
+
+                        VDBG("status of process_ep_req= %d, ep = %d",
+                                        status, ep_num);
+                        if (status == REQ_UNCOMPLETE)
+                                break;
+                        /* write back status to req */
+                        curr_req->req.status = status;
+
+                        if (ep_num == 0) {
+                                ep0_req_complete(udc, curr_ep, curr_req);
+                                break;
+                        } else
+                                done(curr_ep, curr_req, status);
+                }
+        }
+}
+
+/* Process a port change interrupt */
+static void port_change_irq(struct fsl_udc *udc)
+{
+        u32 speed;
+
+        if (udc->bus_reset)
+                udc->bus_reset = 0;
+
+        /* Bus resetting is finished */
+        if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) {
+                /* Get the speed */
+                speed = (fsl_readl(&dr_regs->portsc1)
+                                & PORTSCX_PORT_SPEED_MASK);
+                switch (speed) {
+                case PORTSCX_PORT_SPEED_HIGH:
+                        udc->gadget.speed = USB_SPEED_HIGH;
+                        break;
+                case PORTSCX_PORT_SPEED_FULL:
+                        udc->gadget.speed = USB_SPEED_FULL;
+                        break;
+                case PORTSCX_PORT_SPEED_LOW:
+                        udc->gadget.speed = USB_SPEED_LOW;
+                        break;
+                default:
+                        udc->gadget.speed = USB_SPEED_UNKNOWN;
+                        break;
+                }
+        }
+
+        /* Update USB state */
+        if (!udc->resume_state)
+                udc->usb_state = USB_STATE_DEFAULT;
+}
+
+/* Process suspend interrupt */
+static void suspend_irq(struct fsl_udc *udc)
+{
+        udc->resume_state = udc->usb_state;
+        udc->usb_state = USB_STATE_SUSPENDED;
+
+        /* report suspend to the driver, serial.c does not support this */
+        if (udc->driver->suspend)
+                udc->driver->suspend(&udc->gadget);
+}
+
+static void bus_resume(struct fsl_udc *udc)
+{
+        udc->usb_state = udc->resume_state;
+        udc->resume_state = 0;
+
+        /* report resume to the driver, serial.c does not support this */
+        if (udc->driver->resume)
+                udc->driver->resume(&udc->gadget);
+}
+
+/* Clear up all ep queues */
+static int reset_queues(struct fsl_udc *udc)
+{
+        u8 pipe;
+
+        for (pipe = 0; pipe < udc->max_pipes; pipe++)
+                udc_reset_ep_queue(udc, pipe);
+
+        /* report disconnect; the driver is already quiesced */
+        udc->driver->disconnect(&udc->gadget);
+
+        return 0;
+}
+
+/* Process reset interrupt */
+static void reset_irq(struct fsl_udc *udc)
+{
+        u32 temp;
+        unsigned long timeout;
+
+        /* Clear the device address */
+        temp = fsl_readl(&dr_regs->deviceaddr);
+        fsl_writel(temp & ~USB_DEVICE_ADDRESS_MASK, &dr_regs->deviceaddr);
+
+        udc->device_address = 0;
+
+        /* Clear usb state */
+        udc->resume_state = 0;
+        udc->ep0_dir = 0;
+        udc->ep0_state = WAIT_FOR_SETUP;
+        udc->remote_wakeup = 0; /* default to 0 on reset */
+        udc->gadget.b_hnp_enable = 0;
+        udc->gadget.a_hnp_support = 0;
+        udc->gadget.a_alt_hnp_support = 0;
+
+        /* Clear all the setup token semaphores */
+        temp = fsl_readl(&dr_regs->endptsetupstat);
+        fsl_writel(temp, &dr_regs->endptsetupstat);
+
+        /* Clear all the endpoint complete status bits */
+        temp = fsl_readl(&dr_regs->endptcomplete);
+        fsl_writel(temp, &dr_regs->endptcomplete);
+
+        timeout = jiffies + 100;
+        while (fsl_readl(&dr_regs->endpointprime)) {
+                /* Wait until all endptprime bits cleared */
+                if (time_after(jiffies, timeout)) {
+                        ERR("Timeout for reset\n");
+                        break;
+                }
+                cpu_relax();
+        }
+
+        /* Write 1s to the flush register */
+        fsl_writel(0xffffffff, &dr_regs->endptflush);
+
+        if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) {
+                VDBG("Bus reset");
+                /* Bus is reseting */
+                udc->bus_reset = 1;
+                /* Reset all the queues, include XD, dTD, EP queue
+                 * head and TR Queue */
+                reset_queues(udc);
+                udc->usb_state = USB_STATE_DEFAULT;
+        } else {
+                VDBG("Controller reset");
+                /* initialize usb hw reg except for regs for EP, not
+                 * touch usbintr reg */
+                dr_controller_setup(udc);
+
+                /* Reset all internal used Queues */
+                reset_queues(udc);
+
+                ep0_setup(udc);
+
+                /* Enable DR IRQ reg, Set Run bit, change udc state */
+                dr_controller_run(udc);
+                udc->usb_state = USB_STATE_ATTACHED;
+        }
+}
+
+/*
+ * USB device controller interrupt handler
+ */
+static irqreturn_t fsl_udc_irq(int irq, void *_udc)
+{
+        struct fsl_udc *udc = _udc;
+        u32 irq_src;
+        irqreturn_t status = IRQ_NONE;
+        unsigned long flags;
+
+        /* Disable ISR for OTG host mode */
+        if (udc->stopped)
+                return IRQ_NONE;
+        spin_lock_irqsave(&udc->lock, flags);
+        irq_src = fsl_readl(&dr_regs->usbsts) & fsl_readl(&dr_regs->usbintr);
+        /* Clear notification bits */
+        fsl_writel(irq_src, &dr_regs->usbsts);
+
+        /* VDBG("irq_src [0x%8x]", irq_src); */
+
+        /* Need to resume? */
+        if (udc->usb_state == USB_STATE_SUSPENDED)
+                if ((fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_SUSPEND) == 0)
+                        bus_resume(udc);
+
+        /* USB Interrupt */
+        if (irq_src & USB_STS_INT) {
+                VDBG("Packet int");
+                /* Setup package, we only support ep0 as control ep */
+                if (fsl_readl(&dr_regs->endptsetupstat) & EP_SETUP_STATUS_EP0) {
+                        tripwire_handler(udc, 0,
+                                        (u8 *) (&udc->local_setup_buff));
+                        setup_received_irq(udc, &udc->local_setup_buff);
+                        status = IRQ_HANDLED;
+                }
+
+                /* completion of dtd */
+                if (fsl_readl(&dr_regs->endptcomplete)) {
+                        dtd_complete_irq(udc);
+                        status = IRQ_HANDLED;
+                }
+        }
+
+        /* SOF (for ISO transfer) */
+        if (irq_src & USB_STS_SOF) {
+                status = IRQ_HANDLED;
+        }
+
+        /* Port Change */
+        if (irq_src & USB_STS_PORT_CHANGE) {
+                port_change_irq(udc);
+                status = IRQ_HANDLED;
+        }
+
+        /* Reset Received */
+        if (irq_src & USB_STS_RESET) {
+                reset_irq(udc);
+                status = IRQ_HANDLED;
+        }
+
+        /* Sleep Enable (Suspend) */
+        if (irq_src & USB_STS_SUSPEND) {
+                suspend_irq(udc);
+                status = IRQ_HANDLED;
+        }
+
+        if (irq_src & (USB_STS_ERR | USB_STS_SYS_ERR)) {
+                VDBG("Error IRQ %x ", irq_src);
+        }
+
+        spin_unlock_irqrestore(&udc->lock, flags);
+        return status;
+}
+
+/*----------------------------------------------------------------*
+ * Hook to gadget drivers
+ * Called by initialization code of gadget drivers
+*----------------------------------------------------------------*/
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+        int retval = -ENODEV;
+        unsigned long flags = 0;
+
+        if (!udc_controller)
+                return -ENODEV;
+
+        if (!driver || (driver->speed != USB_SPEED_FULL
+                                && driver->speed != USB_SPEED_HIGH)
+                        || !driver->bind || !driver->disconnect
+                        || !driver->setup)
+                return -EINVAL;
+
+        if (udc_controller->driver)
+                return -EBUSY;
+
+        /* lock is needed but whether should use this lock or another */
+        spin_lock_irqsave(&udc_controller->lock, flags);
+
+        driver->driver.bus = 0;
+        /* hook up the driver */
+        udc_controller->driver = driver;
+        udc_controller->gadget.dev.driver = &driver->driver;
+        spin_unlock_irqrestore(&udc_controller->lock, flags);
+
+        /* bind udc driver to gadget driver */
+        retval = driver->bind(&udc_controller->gadget);
+        if (retval) {
+                VDBG("bind to %s --> %d", driver->driver.name, retval);
+                udc_controller->gadget.dev.driver = 0;
+                udc_controller->driver = 0;
+                goto out;
+        }
+
+        /* Enable DR IRQ reg and Set usbcmd reg  Run bit */
+        dr_controller_run(udc_controller);
+        udc_controller->usb_state = USB_STATE_ATTACHED;
+        udc_controller->ep0_state = WAIT_FOR_SETUP;
+        udc_controller->ep0_dir = 0;
+        printk(KERN_INFO "%s: bind to driver %s \n",
+                        udc_controller->gadget.name, driver->driver.name);
+
+out:
+        if (retval)
+                printk("retval %d \n", retval);
+        return retval;
+}
+EXPORT_SYMBOL(usb_gadget_register_driver);
+
+/* Disconnect from gadget driver */
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+        struct fsl_ep *loop_ep;
+        unsigned long flags;
+
+        if (!udc_controller)
+                return -ENODEV;
+
+        if (!driver || driver != udc_controller->driver || !driver->unbind)
+                return -EINVAL;
+
+#ifdef CONFIG_USB_OTG
+        if (udc_controller->transceiver)
+                (void)otg_set_peripheral(udc_controller->transceiver, 0);
+#endif
+
+        /* stop DR, disable intr */
+        dr_controller_stop(udc_controller);
+
+        /* in fact, no needed */
+        udc_controller->usb_state = USB_STATE_ATTACHED;
+        udc_controller->ep0_state = WAIT_FOR_SETUP;
+        udc_controller->ep0_dir = 0;
+
+        /* stand operation */
+        spin_lock_irqsave(&udc_controller->lock, flags);
+        udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
+        nuke(&udc_controller->eps[0], -ESHUTDOWN);
+        list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list,
+                        ep.ep_list)
+                nuke(loop_ep, -ESHUTDOWN);
+        spin_unlock_irqrestore(&udc_controller->lock, flags);
+
+        /* unbind gadget and unhook driver. */
+        driver->unbind(&udc_controller->gadget);
+        udc_controller->gadget.dev.driver = 0;
+        udc_controller->driver = 0;
+
+        printk("unregistered gadget driver '%s'\r\n", driver->driver.name);
+        return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+/*-------------------------------------------------------------------------
+                PROC File System Support
+-------------------------------------------------------------------------*/
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+#include <linux/seq_file.h>
+
+static const char proc_filename[] = "driver/fsl_usb2_udc";
+
+static int fsl_proc_read(char *page, char **start, off_t off, int count,
+                int *eof, void *_dev)
+{
+        char *buf = page;
+        char *next = buf;
+        unsigned size = count;
+        unsigned long flags;
+        int t, i;
+        u32 tmp_reg;
+        struct fsl_ep *ep = NULL;
+        struct fsl_req *req;
+
+        struct fsl_udc *udc = udc_controller;
+        if (off != 0)
+                return 0;
+
+        spin_lock_irqsave(&udc->lock, flags);
+
+        /* ------basic driver infomation ---- */
+        t = scnprintf(next, size,
+                        DRIVER_DESC "\n"
+                        "%s version: %s\n"
+                        "Gadget driver: %s\n\n",
+                        driver_name, DRIVER_VERSION,
+                        udc->driver ? udc->driver->driver.name : "(none)");
+        size -= t;
+        next += t;
+
+        /* ------ DR Registers ----- */
+        tmp_reg = fsl_readl(&dr_regs->usbcmd);
+        t = scnprintf(next, size,
+                        "USBCMD reg:\n"
+                        "SetupTW: %d\n"
+                        "Run/Stop: %s\n\n",
+                        (tmp_reg & USB_CMD_SUTW) ? 1 : 0,
+                        (tmp_reg & USB_CMD_RUN_STOP) ? "Run" : "Stop");
+        size -= t;
+        next += t;
+
+        tmp_reg = fsl_readl(&dr_regs->usbsts);
+        t = scnprintf(next, size,
+                        "USB Status Reg:\n"
+                        "Dr Suspend: %d" "Reset Received: %d" "System Error: %s"
+                        "USB Error Interrupt: %s\n\n",
+                        (tmp_reg & USB_STS_SUSPEND) ? 1 : 0,
+                        (tmp_reg & USB_STS_RESET) ? 1 : 0,
+                        (tmp_reg & USB_STS_SYS_ERR) ? "Err" : "Normal",
+                        (tmp_reg & USB_STS_ERR) ? "Err detected" : "No err");
+        size -= t;
+        next += t;
+
+        tmp_reg = fsl_readl(&dr_regs->usbintr);
+        t = scnprintf(next, size,
+                        "USB Intrrupt Enable Reg:\n"
+                        "Sleep Enable: %d" "SOF Received Enable: %d"
+                        "Reset Enable: %d\n"
+                        "System Error Enable: %d"
+                        "Port Change Dectected Enable: %d\n"
+                        "USB Error Intr Enable: %d" "USB Intr Enable: %d\n\n",
+                        (tmp_reg & USB_INTR_DEVICE_SUSPEND) ? 1 : 0,
+                        (tmp_reg & USB_INTR_SOF_EN) ? 1 : 0,
+                        (tmp_reg & USB_INTR_RESET_EN) ? 1 : 0,
+                        (tmp_reg & USB_INTR_SYS_ERR_EN) ? 1 : 0,
+                        (tmp_reg & USB_INTR_PTC_DETECT_EN) ? 1 : 0,
+                        (tmp_reg & USB_INTR_ERR_INT_EN) ? 1 : 0,
+                        (tmp_reg & USB_INTR_INT_EN) ? 1 : 0);
+        size -= t;
+        next += t;
+
+        tmp_reg = fsl_readl(&dr_regs->frindex);
+        t = scnprintf(next, size,
+                        "USB Frame Index Reg:" "Frame Number is 0x%x\n\n",
+                        (tmp_reg & USB_FRINDEX_MASKS));
+        size -= t;
+        next += t;
+
+        tmp_reg = fsl_readl(&dr_regs->deviceaddr);
+        t = scnprintf(next, size,
+                        "USB Device Address Reg:" "Device Addr is 0x%x\n\n",
+                        (tmp_reg & USB_DEVICE_ADDRESS_MASK));
+        size -= t;
+        next += t;
+
+        tmp_reg = fsl_readl(&dr_regs->endpointlistaddr);
+        t = scnprintf(next, size,
+                        "USB Endpoint List Address Reg:"
+                        "Device Addr is 0x%x\n\n",
+                        (tmp_reg & USB_EP_LIST_ADDRESS_MASK));
+        size -= t;
+        next += t;
+
+        tmp_reg = fsl_readl(&dr_regs->portsc1);
+        t = scnprintf(next, size,
+                "USB Port Status&Control Reg:\n"
+                "Port Transceiver Type : %s" "Port Speed: %s \n"
+                "PHY Low Power Suspend: %s" "Port Reset: %s"
+                "Port Suspend Mode: %s \n" "Over-current Change: %s"
+                "Port Enable/Disable Change: %s\n"
+                "Port Enabled/Disabled: %s"
+                "Current Connect Status: %s\n\n", ( {
+                        char *s;
+                        switch (tmp_reg & PORTSCX_PTS_FSLS) {
+                        case PORTSCX_PTS_UTMI:
+                                s = "UTMI"; break;
+                        case PORTSCX_PTS_ULPI:
+                                s = "ULPI "; break;
+                        case PORTSCX_PTS_FSLS:
+                                s = "FS/LS Serial"; break;
+                        default:
+                                s = "None"; break;
+                        }
+                        s;} ), ( {
+                        char *s;
+                        switch (tmp_reg & PORTSCX_PORT_SPEED_UNDEF) {
+                        case PORTSCX_PORT_SPEED_FULL:
+                                s = "Full Speed"; break;
+                        case PORTSCX_PORT_SPEED_LOW:
+                                s = "Low Speed"; break;
+                        case PORTSCX_PORT_SPEED_HIGH:
+                                s = "High Speed"; break;
+                        default:
+                                s = "Undefined"; break;
+                        }
+                        s;
+                } ),
+                (tmp_reg & PORTSCX_PHY_LOW_POWER_SPD) ?
+                "Normal PHY mode" : "Low power mode",
+                (tmp_reg & PORTSCX_PORT_RESET) ? "In Reset" :
+                "Not in Reset",
+                (tmp_reg & PORTSCX_PORT_SUSPEND) ? "In " : "Not in",
+                (tmp_reg & PORTSCX_OVER_CURRENT_CHG) ? "Dected" :
+                "No",
+                (tmp_reg & PORTSCX_PORT_EN_DIS_CHANGE) ? "Disable" :
+                "Not change",
+                (tmp_reg & PORTSCX_PORT_ENABLE) ? "Enable" :
+                "Not correct",
+                (tmp_reg & PORTSCX_CURRENT_CONNECT_STATUS) ?
+                "Attached" : "Not-Att");
+        size -= t;
+        next += t;
+
+        tmp_reg = fsl_readl(&dr_regs->usbmode);
+        t = scnprintf(next, size,
+                        "USB Mode Reg:" "Controller Mode is : %s\n\n", ( {
+                                char *s;
+                                switch (tmp_reg & USB_MODE_CTRL_MODE_HOST) {
+                                case USB_MODE_CTRL_MODE_IDLE:
+                                        s = "Idle"; break;
+                                case USB_MODE_CTRL_MODE_DEVICE:
+                                        s = "Device Controller"; break;
+                                case USB_MODE_CTRL_MODE_HOST:
+                                        s = "Host Controller"; break;
+                                default:
+                                        s = "None"; break;
+                                }
+                                s;
+                        } ));
+        size -= t;
+        next += t;
+
+        tmp_reg = fsl_readl(&dr_regs->endptsetupstat);
+        t = scnprintf(next, size,
+                        "Endpoint Setup Status Reg:" "SETUP on ep 0x%x\n\n",
+                        (tmp_reg & EP_SETUP_STATUS_MASK));
+        size -= t;
+        next += t;
+
+        for (i = 0; i < udc->max_ep / 2; i++) {
+                tmp_reg = fsl_readl(&dr_regs->endptctrl[i]);
+                t = scnprintf(next, size, "EP Ctrl Reg [0x%x]: = [0x%x]\n",
+                                i, tmp_reg);
+                size -= t;
+                next += t;
+        }
+        tmp_reg = fsl_readl(&dr_regs->endpointprime);
+        t = scnprintf(next, size, "EP Prime Reg = [0x%x]\n", tmp_reg);
+        size -= t;
+        next += t;
+
+        tmp_reg = usb_sys_regs->snoop1;
+        t = scnprintf(next, size, "\nSnoop1 Reg : = [0x%x]\n\n", tmp_reg);
+        size -= t;
+        next += t;
+
+        tmp_reg = usb_sys_regs->control;
+        t = scnprintf(next, size, "General Control Reg : = [0x%x]\n\n",
+                        tmp_reg);
+        size -= t;
+        next += t;
+
+        /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */
+        ep = &udc->eps[0];
+        t = scnprintf(next, size, "For %s Maxpkt is 0x%x index is 0x%x\n",
+                        ep->ep.name, ep_maxpacket(ep), ep_index(ep));
+        size -= t;
+        next += t;
+
+        if (list_empty(&ep->queue)) {
+                t = scnprintf(next, size, "its req queue is empty\n\n");
+                size -= t;
+                next += t;
+        } else {
+                list_for_each_entry(req, &ep->queue, queue) {
+                        t = scnprintf(next, size,
+                                "req %p actual 0x%x length 0x%x  buf %p\n",
+                                &req->req, req->req.actual,
+                                req->req.length, req->req.buf);
+                        size -= t;
+                        next += t;
+                }
+        }
+        /* other gadget->eplist ep */
+        list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
+                if (ep->desc) {
+                        t = scnprintf(next, size,
+                                        "\nFor %s Maxpkt is 0x%x "
+                                        "index is 0x%x\n",
+                                        ep->ep.name, ep_maxpacket(ep),
+                                        ep_index(ep));
+                        size -= t;
+                        next += t;
+
+                        if (list_empty(&ep->queue)) {
+                                t = scnprintf(next, size,
+                                                "its req queue is empty\n\n");
+                                size -= t;
+                                next += t;
+                        } else {
+                                list_for_each_entry(req, &ep->queue, queue) {
+                                        t = scnprintf(next, size,
+                                                "req %p actual 0x%x length"
+                                                "0x%x  buf %p\n",
+                                                &req->req, req->req.actual,
+                                                req->req.length, req->req.buf);
+                                        size -= t;
+                                        next += t;
+                                        }       /* end for each_entry of ep req */
+                                }       /* end for else */
+                        }       /* end for if(ep->queue) */
+                }               /* end (ep->desc) */
+
+        spin_unlock_irqrestore(&udc->lock, flags);
+
+        *eof = 1;
+        return count - size;
+}
+
+#define create_proc_file()      create_proc_read_entry(proc_filename, \
+                                0, NULL, fsl_proc_read, NULL)
+
+#define remove_proc_file()      remove_proc_entry(proc_filename, NULL)
+
+#else                           /* !CONFIG_USB_GADGET_DEBUG_FILES */
+
+#define create_proc_file()      do {} while (0)
+#define remove_proc_file()      do {} while (0)
+
+#endif                          /* CONFIG_USB_GADGET_DEBUG_FILES */
+
+/*-------------------------------------------------------------------------*/
+
+/* Release udc structures */
+static void fsl_udc_release(struct device *dev)
+{
+        complete(udc_controller->done);
+        dma_free_coherent(dev, udc_controller->ep_qh_size,
+                        udc_controller->ep_qh, udc_controller->ep_qh_dma);
+        kfree(udc_controller);
+}
+
+/******************************************************************
+        Internal structure setup functions
+*******************************************************************/
+/*------------------------------------------------------------------
+ * init resource for globle controller
+ * Return the udc handle on success or NULL on failure
+ ------------------------------------------------------------------*/
+static struct fsl_udc *__init struct_udc_setup(struct platform_device *pdev)
+{
+        struct fsl_udc *udc;
+        struct fsl_usb2_platform_data *pdata;
+        size_t size;
+
+        udc = kzalloc(sizeof(struct fsl_udc), GFP_KERNEL);
+        if (udc == NULL) {
+                ERR("malloc udc failed\n");
+                return NULL;
+        }
+
+        pdata = pdev->dev.platform_data;
+        udc->phy_mode = pdata->phy_mode;
+        /* max_ep_nr is bidirectional ep number, max_ep doubles the number */
+        udc->max_ep = pdata->max_ep_nr * 2;
+
+        udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL);
+        if (!udc->eps) {
+                ERR("malloc fsl_ep failed\n");
+                goto cleanup;
+        }
+
+        /* initialized QHs, take care of alignment */
+        size = udc->max_ep * sizeof(struct ep_queue_head);
+        if (size < QH_ALIGNMENT)
+                size = QH_ALIGNMENT;
+        else if ((size % QH_ALIGNMENT) != 0) {
+                size += QH_ALIGNMENT + 1;
+                size &= ~(QH_ALIGNMENT - 1);
+        }
+        udc->ep_qh = dma_alloc_coherent(&pdev->dev, size,
+                                        &udc->ep_qh_dma, GFP_KERNEL);
+        if (!udc->ep_qh) {
+                ERR("malloc QHs for udc failed\n");
+                kfree(udc->eps);
+                goto cleanup;
+        }
+
+        udc->ep_qh_size = size;
+
+        /* Initialize ep0 status request structure */
+        /* FIXME: fsl_alloc_request() ignores ep argument */
+        udc->status_req = container_of(fsl_alloc_request(NULL, GFP_KERNEL),
+                        struct fsl_req, req);
+        /* allocate a small amount of memory to get valid address */
+        udc->status_req->req.buf = kmalloc(8, GFP_KERNEL);
+        udc->status_req->req.dma = virt_to_phys(udc->status_req->req.buf);
+
+        udc->resume_state = USB_STATE_NOTATTACHED;
+        udc->usb_state = USB_STATE_POWERED;
+        udc->ep0_dir = 0;
+        udc->remote_wakeup = 0; /* default to 0 on reset */
+        spin_lock_init(&udc->lock);
+
+        return udc;
+
+cleanup:
+        kfree(udc);
+        return NULL;
+}
+
+/*----------------------------------------------------------------
+ * Setup the fsl_ep struct for eps
+ * Link fsl_ep->ep to gadget->ep_list
+ * ep0out is not used so do nothing here
+ * ep0in should be taken care
+ *--------------------------------------------------------------*/
+static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index,
+                char *name, int link)
+{
+        struct fsl_ep *ep = &udc->eps[index];
+
+        ep->udc = udc;
+        strcpy(ep->name, name);
+        ep->ep.name = ep->name;
+
+        ep->ep.ops = &fsl_ep_ops;
+        ep->stopped = 0;
+
+        /* for ep0: maxP defined in desc
+         * for other eps, maxP is set by epautoconfig() called by gadget layer
+         */
+        ep->ep.maxpacket = (unsigned short) ~0;
+
+        /* the queue lists any req for this ep */
+        INIT_LIST_HEAD(&ep->queue);
+
+        /* gagdet.ep_list used for ep_autoconfig so no ep0 */
+        if (link)
+                list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
+        ep->gadget = &udc->gadget;
+        ep->qh = &udc->ep_qh[index];
+
+        return 0;
+}
+
+/* Driver probe function
+ * all intialize operations implemented here except enabling usb_intr reg
+ */
+static int __init fsl_udc_probe(struct platform_device *pdev)
+{
+        struct resource *res;
+        int ret = -ENODEV;
+        unsigned int i;
+
+        if (strcmp(pdev->name, driver_name)) {
+                VDBG("Wrong device\n");
+                return -ENODEV;
+        }
+
+        /* board setup should have been done in the platform code */
+
+        /* Initialize the udc structure including QH member and other member */
+        udc_controller = struct_udc_setup(pdev);
+        if (!udc_controller) {
+                VDBG("udc_controller is NULL \n");
+                return -ENOMEM;
+        }
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res)
+                return -ENXIO;
+
+        if (!request_mem_region(res->start, res->end - res->start + 1,
+                                driver_name)) {
+                ERR("request mem region for %s failed \n", pdev->name);
+                return -EBUSY;
+        }
+
+        dr_regs = ioremap(res->start, res->end - res->start + 1);
+        if (!dr_regs) {
+                ret = -ENOMEM;
+                goto err1;
+        }
+
+        usb_sys_regs = (struct usb_sys_interface *)
+                        ((u32)dr_regs + USB_DR_SYS_OFFSET);
+
+        udc_controller->irq = platform_get_irq(pdev, 0);
+        if (!udc_controller->irq) {
+                ret = -ENODEV;
+                goto err2;
+        }
+
+        ret = request_irq(udc_controller->irq, fsl_udc_irq, SA_SHIRQ,
+                        driver_name, udc_controller);
+        if (ret != 0) {
+                ERR("cannot request irq %d err %d \n",
+                                udc_controller->irq, ret);
+                goto err2;
+        }
+
+        /* initialize usb hw reg except for regs for EP,
+         * leave usbintr reg untouched */
+        dr_controller_setup(udc_controller);
+
+        /* Setup gadget structure */
+        udc_controller->gadget.ops = &fsl_gadget_ops;
+        udc_controller->gadget.is_dualspeed = 1;
+        udc_controller->gadget.ep0 = &udc_controller->eps[0].ep;
+        INIT_LIST_HEAD(&udc_controller->gadget.ep_list);
+        udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
+        udc_controller->gadget.name = driver_name;
+
+        /* Setup gadget.dev and register with kernel */
+        strcpy(udc_controller->gadget.dev.bus_id, "gadget");
+        udc_controller->gadget.dev.release = fsl_udc_release;
+        udc_controller->gadget.dev.parent = &pdev->dev;
+        ret = device_register(&udc_controller->gadget.dev);
+        if (ret < 0)
+                goto err3;
+
+        /* setup QH and epctrl for ep0 */
+        ep0_setup(udc_controller);
+
+        /* setup udc->eps[] for ep0 */
+        struct_ep_setup(udc_controller, 0, "ep0", 0);
+        /* for ep0: the desc defined here;
+         * for other eps, gadget layer called ep_enable with defined desc
+         */
+        udc_controller->eps[0].desc = &fsl_ep0_desc;
+        udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD;
+
+        /* setup the udc->eps[] for non-control endpoints and link
+         * to gadget.ep_list */
+        for (i = 1; i < (int)(udc_controller->max_ep / 2); i++) {
+                char name[14];
+
+                sprintf(name, "ep%dout", i);
+                struct_ep_setup(udc_controller, i * 2, name, 1);
+                sprintf(name, "ep%din", i);
+                struct_ep_setup(udc_controller, i * 2 + 1, name, 1);
+        }
+
+        /* use dma_pool for TD management */
+        udc_controller->td_pool = dma_pool_create("udc_td", &pdev->dev,
+                        sizeof(struct ep_td_struct),
+                        DTD_ALIGNMENT, UDC_DMA_BOUNDARY);
+        if (udc_controller->td_pool == NULL) {
+                ret = -ENOMEM;
+                goto err4;
+        }
+        create_proc_file();
+        return 0;
+
+err4:
+        device_unregister(&udc_controller->gadget.dev);
+err3:
+        free_irq(udc_controller->irq, udc_controller);
+err2:
+        iounmap(dr_regs);
+err1:
+        release_mem_region(res->start, res->end - res->start + 1);
+        return ret;
+}
+
+/* Driver removal function
+ * Free resources and finish pending transactions
+ */
+static int __exit fsl_udc_remove(struct platform_device *pdev)
+{
+        struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+        DECLARE_COMPLETION(done);
+
+        if (!udc_controller)
+                return -ENODEV;
+        udc_controller->done = &done;
+
+        /* DR has been stopped in usb_gadget_unregister_driver() */
+        remove_proc_file();
+
+        /* Free allocated memory */
+        kfree(udc_controller->status_req->req.buf);
+        kfree(udc_controller->status_req);
+        kfree(udc_controller->eps);
+
+        dma_pool_destroy(udc_controller->td_pool);
+        free_irq(udc_controller->irq, udc_controller);
+        iounmap(dr_regs);
+        release_mem_region(res->start, res->end - res->start + 1);
+
+        device_unregister(&udc_controller->gadget.dev);
+        /* free udc --wait for the release() finished */
+        wait_for_completion(&done);
+
+        return 0;
+}
+
+/*-----------------------------------------------------------------
+ * Modify Power management attributes
+ * Used by OTG statemachine to disable gadget temporarily
+ -----------------------------------------------------------------*/
+static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+        dr_controller_stop(udc_controller);
+        return 0;
+}
+
+/*-----------------------------------------------------------------
+ * Invoked on USB resume. May be called in_interrupt.
+ * Here we start the DR controller and enable the irq
+ *-----------------------------------------------------------------*/
+static int fsl_udc_resume(struct platform_device *pdev)
+{
+        /* Enable DR irq reg and set controller Run */
+        if (udc_controller->stopped) {
+                dr_controller_setup(udc_controller);
+                dr_controller_run(udc_controller);
+        }
+        udc_controller->usb_state = USB_STATE_ATTACHED;
+        udc_controller->ep0_state = WAIT_FOR_SETUP;
+        udc_controller->ep0_dir = 0;
+        return 0;
+}
+
+/*-------------------------------------------------------------------------
+        Register entry point for the peripheral controller driver
+--------------------------------------------------------------------------*/
+
+static struct platform_driver udc_driver = {
+        .remove  = __exit_p(fsl_udc_remove),
+        /* these suspend and resume are not usb suspend and resume */
+        .suspend = fsl_udc_suspend,
+        .resume  = fsl_udc_resume,
+        .driver  = {
+                .name = (char *)driver_name,
+                .owner = THIS_MODULE,
+        },
+};
+
+static int __init udc_init(void)
+{
+        printk(KERN_INFO "%s (%s)\n", driver_desc, DRIVER_VERSION);
+        return platform_driver_probe(&udc_driver, fsl_udc_probe);
+}
+
+module_init(udc_init);
+
+static void __exit udc_exit(void)
+{
+        platform_driver_unregister(&udc_driver);
+        printk("%s unregistered \n", driver_desc);
+}
+
+module_exit(udc_exit);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/fsl_usb2_udc.h b/drivers/usb/gadget/fsl_usb2_udc.h
new file mode 100644
index 000000000000..c6291e046507
--- /dev/null
+++ b/drivers/usb/gadget/fsl_usb2_udc.h
@@ -0,0 +1,579 @@
+/*
+ * Freescale USB device/endpoint management registers
+ */
+#ifndef __FSL_USB2_UDC_H
+#define __FSL_USB2_UDC_H
+
+/* ### define USB registers here
+ */
+#define USB_MAX_CTRL_PAYLOAD            64
+#define USB_DR_SYS_OFFSET               0x400
+
+ /* USB DR device mode registers (Little Endian) */
+struct usb_dr_device {
+        /* Capability register */
+        u8 res1[256];
+        u16 caplength;          /* Capability Register Length */
+        u16 hciversion;         /* Host Controller Interface Version */
+        u32 hcsparams;          /* Host Controller Structual Parameters */
+        u32 hccparams;          /* Host Controller Capability Parameters */
+        u8 res2[20];
+        u32 dciversion;         /* Device Controller Interface Version */
+        u32 dccparams;          /* Device Controller Capability Parameters */
+        u8 res3[24];
+        /* Operation register */
+        u32 usbcmd;             /* USB Command Register */
+        u32 usbsts;             /* USB Status Register */
+        u32 usbintr;            /* USB Interrupt Enable Register */
+        u32 frindex;            /* Frame Index Register */
+        u8 res4[4];
+        u32 deviceaddr;         /* Device Address */
+        u32 endpointlistaddr;   /* Endpoint List Address Register */
+        u8 res5[4];
+        u32 burstsize;          /* Master Interface Data Burst Size Register */
+        u32 txttfilltuning;     /* Transmit FIFO Tuning Controls Register */
+        u8 res6[24];
+        u32 configflag;         /* Configure Flag Register */
+        u32 portsc1;            /* Port 1 Status and Control Register */
+        u8 res7[28];
+        u32 otgsc;              /* On-The-Go Status and Control */
+        u32 usbmode;            /* USB Mode Register */
+        u32 endptsetupstat;     /* Endpoint Setup Status Register */
+        u32 endpointprime;      /* Endpoint Initialization Register */
+        u32 endptflush;         /* Endpoint Flush Register */
+        u32 endptstatus;        /* Endpoint Status Register */
+        u32 endptcomplete;      /* Endpoint Complete Register */
+        u32 endptctrl[6];       /* Endpoint Control Registers */
+};
+
+ /* USB DR host mode registers (Little Endian) */
+struct usb_dr_host {
+        /* Capability register */
+        u8 res1[256];
+        u16 caplength;          /* Capability Register Length */
+        u16 hciversion;         /* Host Controller Interface Version */
+        u32 hcsparams;          /* Host Controller Structual Parameters */
+        u32 hccparams;          /* Host Controller Capability Parameters */
+        u8 res2[20];
+        u32 dciversion;         /* Device Controller Interface Version */
+        u32 dccparams;          /* Device Controller Capability Parameters */
+        u8 res3[24];
+        /* Operation register */
+        u32 usbcmd;             /* USB Command Register */
+        u32 usbsts;             /* USB Status Register */
+        u32 usbintr;            /* USB Interrupt Enable Register */
+        u32 frindex;            /* Frame Index Register */
+        u8 res4[4];
+        u32 periodiclistbase;   /* Periodic Frame List Base Address Register */
+        u32 asynclistaddr;      /* Current Asynchronous List Address Register */
+        u8 res5[4];
+        u32 burstsize;          /* Master Interface Data Burst Size Register */
+        u32 txttfilltuning;     /* Transmit FIFO Tuning Controls Register */
+        u8 res6[24];
+        u32 configflag;         /* Configure Flag Register */
+        u32 portsc1;            /* Port 1 Status and Control Register */
+        u8 res7[28];
+        u32 otgsc;              /* On-The-Go Status and Control */
+        u32 usbmode;            /* USB Mode Register */
+        u32 endptsetupstat;     /* Endpoint Setup Status Register */
+        u32 endpointprime;      /* Endpoint Initialization Register */
+        u32 endptflush;         /* Endpoint Flush Register */
+        u32 endptstatus;        /* Endpoint Status Register */
+        u32 endptcomplete;      /* Endpoint Complete Register */
+        u32 endptctrl[6];       /* Endpoint Control Registers */
+};
+
+ /* non-EHCI USB system interface registers (Big Endian) */
+struct usb_sys_interface {
+        u32 snoop1;
+        u32 snoop2;
+        u32 age_cnt_thresh;     /* Age Count Threshold Register */
+        u32 pri_ctrl;           /* Priority Control Register */
+        u32 si_ctrl;            /* System Interface Control Register */
+        u8 res[236];
+        u32 control;            /* General Purpose Control Register */
+};
+
+/* ep0 transfer state */
+#define WAIT_FOR_SETUP          0
+#define DATA_STATE_XMIT         1
+#define DATA_STATE_NEED_ZLP     2
+#define WAIT_FOR_OUT_STATUS     3
+#define DATA_STATE_RECV         4
+
+/* Frame Index Register Bit Masks */
+#define USB_FRINDEX_MASKS                       0x3fff
+/* USB CMD  Register Bit Masks */
+#define  USB_CMD_RUN_STOP                     0x00000001
+#define  USB_CMD_CTRL_RESET                   0x00000002
+#define  USB_CMD_PERIODIC_SCHEDULE_EN         0x00000010
+#define  USB_CMD_ASYNC_SCHEDULE_EN            0x00000020
+#define  USB_CMD_INT_AA_DOORBELL              0x00000040
+#define  USB_CMD_ASP                          0x00000300
+#define  USB_CMD_ASYNC_SCH_PARK_EN            0x00000800
+#define  USB_CMD_SUTW                         0x00002000
+#define  USB_CMD_ATDTW                        0x00004000
+#define  USB_CMD_ITC                          0x00FF0000
+
+/* bit 15,3,2 are frame list size */
+#define  USB_CMD_FRAME_SIZE_1024              0x00000000
+#define  USB_CMD_FRAME_SIZE_512               0x00000004
+#define  USB_CMD_FRAME_SIZE_256               0x00000008
+#define  USB_CMD_FRAME_SIZE_128               0x0000000C
+#define  USB_CMD_FRAME_SIZE_64                0x00008000
+#define  USB_CMD_FRAME_SIZE_32                0x00008004
+#define  USB_CMD_FRAME_SIZE_16                0x00008008
+#define  USB_CMD_FRAME_SIZE_8                 0x0000800C
+
+/* bit 9-8 are async schedule park mode count */
+#define  USB_CMD_ASP_00                       0x00000000
+#define  USB_CMD_ASP_01                       0x00000100
+#define  USB_CMD_ASP_10                       0x00000200
+#define  USB_CMD_ASP_11                       0x00000300
+#define  USB_CMD_ASP_BIT_POS                  8
+
+/* bit 23-16 are interrupt threshold control */
+#define  USB_CMD_ITC_NO_THRESHOLD             0x00000000
+#define  USB_CMD_ITC_1_MICRO_FRM              0x00010000
+#define  USB_CMD_ITC_2_MICRO_FRM              0x00020000
+#define  USB_CMD_ITC_4_MICRO_FRM              0x00040000
+#define  USB_CMD_ITC_8_MICRO_FRM              0x00080000
+#define  USB_CMD_ITC_16_MICRO_FRM             0x00100000
+#define  USB_CMD_ITC_32_MICRO_FRM             0x00200000
+#define  USB_CMD_ITC_64_MICRO_FRM             0x00400000
+#define  USB_CMD_ITC_BIT_POS                  16
+
+/* USB STS Register Bit Masks */
+#define  USB_STS_INT                          0x00000001
+#define  USB_STS_ERR                          0x00000002
+#define  USB_STS_PORT_CHANGE                  0x00000004
+#define  USB_STS_FRM_LST_ROLL                 0x00000008
+#define  USB_STS_SYS_ERR                      0x00000010
+#define  USB_STS_IAA                          0x00000020
+#define  USB_STS_RESET                        0x00000040
+#define  USB_STS_SOF                          0x00000080
+#define  USB_STS_SUSPEND                      0x00000100
+#define  USB_STS_HC_HALTED                    0x00001000
+#define  USB_STS_RCL                          0x00002000
+#define  USB_STS_PERIODIC_SCHEDULE            0x00004000
+#define  USB_STS_ASYNC_SCHEDULE               0x00008000
+
+/* USB INTR Register Bit Masks */
+#define  USB_INTR_INT_EN                      0x00000001
+#define  USB_INTR_ERR_INT_EN                  0x00000002
+#define  USB_INTR_PTC_DETECT_EN               0x00000004
+#define  USB_INTR_FRM_LST_ROLL_EN             0x00000008
+#define  USB_INTR_SYS_ERR_EN                  0x00000010
+#define  USB_INTR_ASYN_ADV_EN                 0x00000020
+#define  USB_INTR_RESET_EN                    0x00000040
+#define  USB_INTR_SOF_EN                      0x00000080
+#define  USB_INTR_DEVICE_SUSPEND              0x00000100
+
+/* Device Address bit masks */
+#define  USB_DEVICE_ADDRESS_MASK              0xFE000000
+#define  USB_DEVICE_ADDRESS_BIT_POS           25
+
+/* endpoint list address bit masks */
+#define USB_EP_LIST_ADDRESS_MASK              0xfffff800
+
+/* PORTSCX  Register Bit Masks */
+#define  PORTSCX_CURRENT_CONNECT_STATUS       0x00000001
+#define  PORTSCX_CONNECT_STATUS_CHANGE        0x00000002
+#define  PORTSCX_PORT_ENABLE                  0x00000004
+#define  PORTSCX_PORT_EN_DIS_CHANGE           0x00000008
+#define  PORTSCX_OVER_CURRENT_ACT             0x00000010
+#define  PORTSCX_OVER_CURRENT_CHG             0x00000020
+#define  PORTSCX_PORT_FORCE_RESUME            0x00000040
+#define  PORTSCX_PORT_SUSPEND                 0x00000080
+#define  PORTSCX_PORT_RESET                   0x00000100
+#define  PORTSCX_LINE_STATUS_BITS             0x00000C00
+#define  PORTSCX_PORT_POWER                   0x00001000
+#define  PORTSCX_PORT_INDICTOR_CTRL           0x0000C000
+#define  PORTSCX_PORT_TEST_CTRL               0x000F0000
+#define  PORTSCX_WAKE_ON_CONNECT_EN           0x00100000
+#define  PORTSCX_WAKE_ON_CONNECT_DIS          0x00200000
+#define  PORTSCX_WAKE_ON_OVER_CURRENT         0x00400000
+#define  PORTSCX_PHY_LOW_POWER_SPD            0x00800000
+#define  PORTSCX_PORT_FORCE_FULL_SPEED        0x01000000
+#define  PORTSCX_PORT_SPEED_MASK              0x0C000000
+#define  PORTSCX_PORT_WIDTH                   0x10000000
+#define  PORTSCX_PHY_TYPE_SEL                 0xC0000000
+
+/* bit 11-10 are line status */
+#define  PORTSCX_LINE_STATUS_SE0              0x00000000
+#define  PORTSCX_LINE_STATUS_JSTATE           0x00000400
+#define  PORTSCX_LINE_STATUS_KSTATE           0x00000800
+#define  PORTSCX_LINE_STATUS_UNDEF            0x00000C00
+#define  PORTSCX_LINE_STATUS_BIT_POS          10
+
+/* bit 15-14 are port indicator control */
+#define  PORTSCX_PIC_OFF                      0x00000000
+#define  PORTSCX_PIC_AMBER                    0x00004000
+#define  PORTSCX_PIC_GREEN                    0x00008000
+#define  PORTSCX_PIC_UNDEF                    0x0000C000
+#define  PORTSCX_PIC_BIT_POS                  14
+
+/* bit 19-16 are port test control */
+#define  PORTSCX_PTC_DISABLE                  0x00000000
+#define  PORTSCX_PTC_JSTATE                   0x00010000
+#define  PORTSCX_PTC_KSTATE                   0x00020000
+#define  PORTSCX_PTC_SEQNAK                   0x00030000
+#define  PORTSCX_PTC_PACKET                   0x00040000
+#define  PORTSCX_PTC_FORCE_EN                 0x00050000
+#define  PORTSCX_PTC_BIT_POS                  16
+
+/* bit 27-26 are port speed */
+#define  PORTSCX_PORT_SPEED_FULL              0x00000000
+#define  PORTSCX_PORT_SPEED_LOW               0x04000000
+#define  PORTSCX_PORT_SPEED_HIGH              0x08000000
+#define  PORTSCX_PORT_SPEED_UNDEF             0x0C000000
+#define  PORTSCX_SPEED_BIT_POS                26
+
+/* bit 28 is parallel transceiver width for UTMI interface */
+#define  PORTSCX_PTW                          0x10000000
+#define  PORTSCX_PTW_8BIT                     0x00000000
+#define  PORTSCX_PTW_16BIT                    0x10000000
+
+/* bit 31-30 are port transceiver select */
+#define  PORTSCX_PTS_UTMI                     0x00000000
+#define  PORTSCX_PTS_ULPI                     0x80000000
+#define  PORTSCX_PTS_FSLS                     0xC0000000
+#define  PORTSCX_PTS_BIT_POS                  30
+
+/* otgsc Register Bit Masks */
+#define  OTGSC_CTRL_VUSB_DISCHARGE            0x00000001
+#define  OTGSC_CTRL_VUSB_CHARGE               0x00000002
+#define  OTGSC_CTRL_OTG_TERM                  0x00000008
+#define  OTGSC_CTRL_DATA_PULSING              0x00000010
+#define  OTGSC_STS_USB_ID                     0x00000100
+#define  OTGSC_STS_A_VBUS_VALID               0x00000200
+#define  OTGSC_STS_A_SESSION_VALID            0x00000400
+#define  OTGSC_STS_B_SESSION_VALID            0x00000800
+#define  OTGSC_STS_B_SESSION_END              0x00001000
+#define  OTGSC_STS_1MS_TOGGLE                 0x00002000
+#define  OTGSC_STS_DATA_PULSING               0x00004000
+#define  OTGSC_INTSTS_USB_ID                  0x00010000
+#define  OTGSC_INTSTS_A_VBUS_VALID            0x00020000
+#define  OTGSC_INTSTS_A_SESSION_VALID         0x00040000
+#define  OTGSC_INTSTS_B_SESSION_VALID         0x00080000
+#define  OTGSC_INTSTS_B_SESSION_END           0x00100000
+#define  OTGSC_INTSTS_1MS                     0x00200000
+#define  OTGSC_INTSTS_DATA_PULSING            0x00400000
+#define  OTGSC_INTR_USB_ID                    0x01000000
+#define  OTGSC_INTR_A_VBUS_VALID              0x02000000
+#define  OTGSC_INTR_A_SESSION_VALID           0x04000000
+#define  OTGSC_INTR_B_SESSION_VALID           0x08000000
+#define  OTGSC_INTR_B_SESSION_END             0x10000000
+#define  OTGSC_INTR_1MS_TIMER                 0x20000000
+#define  OTGSC_INTR_DATA_PULSING              0x40000000
+
+/* USB MODE Register Bit Masks */
+#define  USB_MODE_CTRL_MODE_IDLE              0x00000000
+#define  USB_MODE_CTRL_MODE_DEVICE            0x00000002
+#define  USB_MODE_CTRL_MODE_HOST              0x00000003
+#define  USB_MODE_CTRL_MODE_RSV               0x00000001
+#define  USB_MODE_SETUP_LOCK_OFF              0x00000008
+#define  USB_MODE_STREAM_DISABLE              0x00000010
+/* Endpoint Flush Register */
+#define EPFLUSH_TX_OFFSET                     0x00010000
+#define EPFLUSH_RX_OFFSET                     0x00000000
+
+/* Endpoint Setup Status bit masks */
+#define  EP_SETUP_STATUS_MASK                 0x0000003F
+#define  EP_SETUP_STATUS_EP0                  0x00000001
+
+/* ENDPOINTCTRLx  Register Bit Masks */
+#define  EPCTRL_TX_ENABLE                     0x00800000
+#define  EPCTRL_TX_DATA_TOGGLE_RST            0x00400000        /* Not EP0 */
+#define  EPCTRL_TX_DATA_TOGGLE_INH            0x00200000        /* Not EP0 */
+#define  EPCTRL_TX_TYPE                       0x000C0000
+#define  EPCTRL_TX_DATA_SOURCE                0x00020000        /* Not EP0 */
+#define  EPCTRL_TX_EP_STALL                   0x00010000
+#define  EPCTRL_RX_ENABLE                     0x00000080
+#define  EPCTRL_RX_DATA_TOGGLE_RST            0x00000040        /* Not EP0 */
+#define  EPCTRL_RX_DATA_TOGGLE_INH            0x00000020        /* Not EP0 */
+#define  EPCTRL_RX_TYPE                       0x0000000C
+#define  EPCTRL_RX_DATA_SINK                  0x00000002        /* Not EP0 */
+#define  EPCTRL_RX_EP_STALL                   0x00000001
+
+/* bit 19-18 and 3-2 are endpoint type */
+#define  EPCTRL_EP_TYPE_CONTROL               0
+#define  EPCTRL_EP_TYPE_ISO                   1
+#define  EPCTRL_EP_TYPE_BULK                  2
+#define  EPCTRL_EP_TYPE_INTERRUPT             3
+#define  EPCTRL_TX_EP_TYPE_SHIFT              18
+#define  EPCTRL_RX_EP_TYPE_SHIFT              2
+
+/* SNOOPn Register Bit Masks */
+#define  SNOOP_ADDRESS_MASK                   0xFFFFF000
+#define  SNOOP_SIZE_ZERO                      0x00      /* snooping disable */
+#define  SNOOP_SIZE_4KB                       0x0B      /* 4KB snoop size */
+#define  SNOOP_SIZE_8KB                       0x0C
+#define  SNOOP_SIZE_16KB                      0x0D
+#define  SNOOP_SIZE_32KB                      0x0E
+#define  SNOOP_SIZE_64KB                      0x0F
+#define  SNOOP_SIZE_128KB                     0x10
+#define  SNOOP_SIZE_256KB                     0x11
+#define  SNOOP_SIZE_512KB                     0x12
+#define  SNOOP_SIZE_1MB                       0x13
+#define  SNOOP_SIZE_2MB                       0x14
+#define  SNOOP_SIZE_4MB                       0x15
+#define  SNOOP_SIZE_8MB                       0x16
+#define  SNOOP_SIZE_16MB                      0x17
+#define  SNOOP_SIZE_32MB                      0x18
+#define  SNOOP_SIZE_64MB                      0x19
+#define  SNOOP_SIZE_128MB                     0x1A
+#define  SNOOP_SIZE_256MB                     0x1B
+#define  SNOOP_SIZE_512MB                     0x1C
+#define  SNOOP_SIZE_1GB                       0x1D
+#define  SNOOP_SIZE_2GB                       0x1E      /* 2GB snoop size */
+
+/* pri_ctrl Register Bit Masks */
+#define  PRI_CTRL_PRI_LVL1                    0x0000000C
+#define  PRI_CTRL_PRI_LVL0                    0x00000003
+
+/* si_ctrl Register Bit Masks */
+#define  SI_CTRL_ERR_DISABLE                  0x00000010
+#define  SI_CTRL_IDRC_DISABLE                 0x00000008
+#define  SI_CTRL_RD_SAFE_EN                   0x00000004
+#define  SI_CTRL_RD_PREFETCH_DISABLE          0x00000002
+#define  SI_CTRL_RD_PREFEFETCH_VAL            0x00000001
+
+/* control Register Bit Masks */
+#define  USB_CTRL_IOENB                       0x00000004
+#define  USB_CTRL_ULPI_INT0EN                 0x00000001
+
+/* Endpoint Queue Head data struct
+ * Rem: all the variables of qh are LittleEndian Mode
+ * and NEXT_POINTER_MASK should operate on a LittleEndian, Phy Addr
+ */
+struct ep_queue_head {
+        u32 max_pkt_length;     /* Mult(31-30) , Zlt(29) , Max Pkt len
+                                   and IOS(15) */
+        u32 curr_dtd_ptr;       /* Current dTD Pointer(31-5) */
+        u32 next_dtd_ptr;       /* Next dTD Pointer(31-5), T(0) */
+        u32 size_ioc_int_sts;   /* Total bytes (30-16), IOC (15),
+                                   MultO(11-10), STS (7-0)  */
+        u32 buff_ptr0;          /* Buffer pointer Page 0 (31-12) */
+        u32 buff_ptr1;          /* Buffer pointer Page 1 (31-12) */
+        u32 buff_ptr2;          /* Buffer pointer Page 2 (31-12) */
+        u32 buff_ptr3;          /* Buffer pointer Page 3 (31-12) */
+        u32 buff_ptr4;          /* Buffer pointer Page 4 (31-12) */
+        u32 res1;
+        u8 setup_buffer[8];     /* Setup data 8 bytes */
+        u32 res2[4];
+};
+
+/* Endpoint Queue Head Bit Masks */
+#define  EP_QUEUE_HEAD_MULT_POS               30
+#define  EP_QUEUE_HEAD_ZLT_SEL                0x20000000
+#define  EP_QUEUE_HEAD_MAX_PKT_LEN_POS        16
+#define  EP_QUEUE_HEAD_MAX_PKT_LEN(ep_info)   (((ep_info)>>16)&0x07ff)
+#define  EP_QUEUE_HEAD_IOS                    0x00008000
+#define  EP_QUEUE_HEAD_NEXT_TERMINATE         0x00000001
+#define  EP_QUEUE_HEAD_IOC                    0x00008000
+#define  EP_QUEUE_HEAD_MULTO                  0x00000C00
+#define  EP_QUEUE_HEAD_STATUS_HALT            0x00000040
+#define  EP_QUEUE_HEAD_STATUS_ACTIVE          0x00000080
+#define  EP_QUEUE_CURRENT_OFFSET_MASK         0x00000FFF
+#define  EP_QUEUE_HEAD_NEXT_POINTER_MASK      0xFFFFFFE0
+#define  EP_QUEUE_FRINDEX_MASK                0x000007FF
+#define  EP_MAX_LENGTH_TRANSFER               0x4000
+
+/* Endpoint Transfer Descriptor data struct */
+/* Rem: all the variables of td are LittleEndian Mode */
+struct ep_td_struct {
+        u32 next_td_ptr;        /* Next TD pointer(31-5), T(0) set
+                                   indicate invalid */
+        u32 size_ioc_sts;       /* Total bytes (30-16), IOC (15),
+                                   MultO(11-10), STS (7-0)  */
+        u32 buff_ptr0;          /* Buffer pointer Page 0 */
+        u32 buff_ptr1;          /* Buffer pointer Page 1 */
+        u32 buff_ptr2;          /* Buffer pointer Page 2 */
+        u32 buff_ptr3;          /* Buffer pointer Page 3 */
+        u32 buff_ptr4;          /* Buffer pointer Page 4 */
+        u32 res;
+        /* 32 bytes */
+        dma_addr_t td_dma;      /* dma address for this td */
+        /* virtual address of next td specified in next_td_ptr */
+        struct ep_td_struct *next_td_virt;
+};
+
+/* Endpoint Transfer Descriptor bit Masks */
+#define  DTD_NEXT_TERMINATE                   0x00000001
+#define  DTD_IOC                              0x00008000
+#define  DTD_STATUS_ACTIVE                    0x00000080
+#define  DTD_STATUS_HALTED                    0x00000040
+#define  DTD_STATUS_DATA_BUFF_ERR             0x00000020
+#define  DTD_STATUS_TRANSACTION_ERR           0x00000008
+#define  DTD_RESERVED_FIELDS                  0x80007300
+#define  DTD_ADDR_MASK                        0xFFFFFFE0
+#define  DTD_PACKET_SIZE                      0x7FFF0000
+#define  DTD_LENGTH_BIT_POS                   16
+#define  DTD_ERROR_MASK                       (DTD_STATUS_HALTED | \
+                                               DTD_STATUS_DATA_BUFF_ERR | \
+                                               DTD_STATUS_TRANSACTION_ERR)
+/* Alignment requirements; must be a power of two */
+#define DTD_ALIGNMENT                           0x20
+#define QH_ALIGNMENT                            2048
+
+/* Controller dma boundary */
+#define UDC_DMA_BOUNDARY                        0x1000
+
+/* -----------------------------------------------------------------------*/
+/* ##### enum data
+*/
+typedef enum {
+        e_ULPI,
+        e_UTMI_8BIT,
+        e_UTMI_16BIT,
+        e_SERIAL
+} e_PhyInterface;
+
+/*-------------------------------------------------------------------------*/
+
+/* ### driver private data
+ */
+struct fsl_req {
+        struct usb_request req;
+        struct list_head queue;
+        /* ep_queue() func will add
+           a request->queue into a udc_ep->queue 'd tail */
+        struct fsl_ep *ep;
+        unsigned mapped:1;
+
+        struct ep_td_struct *head, *tail;       /* For dTD List
+                                                   cpu endian Virtual addr */
+        unsigned int dtd_count;
+};
+
+#define REQ_UNCOMPLETE                  1
+
+struct fsl_ep {
+        struct usb_ep ep;
+        struct list_head queue;
+        struct fsl_udc *udc;
+        struct ep_queue_head *qh;
+        const struct usb_endpoint_descriptor *desc;
+        struct usb_gadget *gadget;
+
+        char name[14];
+        unsigned stopped:1;
+};
+
+#define EP_DIR_IN       1
+#define EP_DIR_OUT      0
+
+struct fsl_udc {
+
+        struct usb_gadget gadget;
+        struct usb_gadget_driver *driver;
+        struct fsl_ep *eps;
+        unsigned int max_ep;
+        unsigned int irq;
+
+        struct usb_ctrlrequest local_setup_buff;
+        spinlock_t lock;
+        struct otg_transceiver *transceiver;
+        unsigned softconnect:1;
+        unsigned vbus_active:1;
+        unsigned stopped:1;
+        unsigned remote_wakeup:1;
+
+        struct ep_queue_head *ep_qh;    /* Endpoints Queue-Head */
+        struct fsl_req *status_req;     /* ep0 status request */
+        struct dma_pool *td_pool;       /* dma pool for DTD */
+        enum fsl_usb2_phy_modes phy_mode;
+
+        size_t ep_qh_size;              /* size after alignment adjustment*/
+        dma_addr_t ep_qh_dma;           /* dma address of QH */
+
+        u32 max_pipes;          /* Device max pipes */
+        u32 max_use_endpts;     /* Max endpointes to be used */
+        u32 bus_reset;          /* Device is bus reseting */
+        u32 resume_state;       /* USB state to resume */
+        u32 usb_state;          /* USB current state */
+        u32 usb_next_state;     /* USB next state */
+        u32 ep0_state;          /* Endpoint zero state */
+        u32 ep0_dir;            /* Endpoint zero direction: can be
+                                   USB_DIR_IN or USB_DIR_OUT */
+        u32 usb_sof_count;      /* SOF count */
+        u32 errors;             /* USB ERRORs count */
+        u8 device_address;      /* Device USB address */
+
+        struct completion *done;        /* to make sure release() is done */
+};
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef DEBUG
+#define DBG(fmt, args...)       printk(KERN_DEBUG "[%s]  " fmt "\n", \
+                                __FUNCTION__, ## args)
+#else
+#define DBG(fmt, args...)       do{}while(0)
+#endif
+
+#if 0
+static void dump_msg(const char *label, const u8 * buf, unsigned int length)
+{
+        unsigned int start, num, i;
+        char line[52], *p;
+
+        if (length >= 512)
+                return;
+        DBG("%s, length %u:\n", label, length);
+        start = 0;
+        while (length > 0) {
+                num = min(length, 16u);
+                p = line;
+                for (i = 0; i < num; ++i) {
+                        if (i == 8)
+                                *p++ = ' ';
+                        sprintf(p, " %02x", buf[i]);
+                        p += 3;
+                }
+                *p = 0;
+                printk(KERN_DEBUG "%6x: %s\n", start, line);
+                buf += num;
+                start += num;
+                length -= num;
+        }
+}
+#endif
+
+#ifdef VERBOSE
+#define VDBG            DBG
+#else
+#define VDBG(stuff...)  do{}while(0)
+#endif
+
+#define ERR(stuff...)           printk(KERN_ERR "udc: " stuff)
+#define WARN(stuff...)          printk(KERN_WARNING "udc: " stuff)
+#define INFO(stuff...)          printk(KERN_INFO "udc: " stuff)
+
+/*-------------------------------------------------------------------------*/
+
+/* ### Add board specific defines here
+ */
+
+/*
+ * ### pipe direction macro from device view
+ */
+#define USB_RECV        0       /* OUT EP */
+#define USB_SEND        1       /* IN EP */
+
+/*
+ * ### internal used help routines.
+ */
+#define ep_index(EP)            ((EP)->desc->bEndpointAddress&0xF)
+#define ep_maxpacket(EP)        ((EP)->ep.maxpacket)
+#define ep_is_in(EP)    ( (ep_index(EP) == 0) ? (EP->udc->ep0_dir == \
+                        USB_DIR_IN ):((EP)->desc->bEndpointAddress \
+                        & USB_DIR_IN)==USB_DIR_IN)
+#define get_ep_by_pipe(udc, pipe)       ((pipe == 1)? &udc->eps[0]: \
+                                        &udc->eps[pipe])
+#define get_pipe_by_windex(windex)      ((windex & USB_ENDPOINT_NUMBER_MASK) \
+                                        * 2 + ((windex & USB_DIR_IN) ? 1 : 0))
+#define get_pipe_by_ep(EP)      (ep_index(EP) * 2 + ep_is_in(EP))
+
+#endif
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index 2e3d6620d216..d041b919e7b8 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -99,6 +99,12 @@
 #define gadget_is_imx(g)        0
 #endif
 
+#ifdef CONFIG_USB_GADGET_FSL_USB2
+#define gadget_is_fsl_usb2(g)   !strcmp("fsl-usb2-udc", (g)->name)
+#else
+#define gadget_is_fsl_usb2(g)   0
+#endif
+
 /* Mentor high speed function controller */
 #ifdef CONFIG_USB_GADGET_MUSBHSFC
 #define gadget_is_musbhsfc(g)   !strcmp("musbhsfc_udc", (g)->name)
@@ -177,5 +183,7 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
                 return 0x17;
         else if (gadget_is_husb2dev(gadget))
                 return 0x18;
+        else if (gadget_is_fsl_usb2(gadget))
+                return 0x19;
         return -ENOENT;
 }
diff --git a/drivers/usb/gadget/pxa2xx_udc.c b/drivers/usb/gadget/pxa2xx_udc.c
index f01890dc8751..2c043a1ea156 100644
--- a/drivers/usb/gadget/pxa2xx_udc.c
+++ b/drivers/usb/gadget/pxa2xx_udc.c
@@ -71,7 +71,7 @@
  * by the host to interact with this device, and allocates endpoints to
  * the different protocol interfaces.  The controller driver virtualizes
  * usb hardware so that the gadget drivers will be more portable.
- * 
+ *
  * This UDC hardware wants to implement a bit too much USB protocol, so
  * it constrains the sorts of USB configuration change events that work.
  * The errata for these chips are misleading; some "fixed" bugs from
@@ -141,7 +141,7 @@ MODULE_PARM_DESC (fifo_mode, "pxa2xx udc fifo mode");
 #endif
 
 /* ---------------------------------------------------------------------------
- *      endpoint related parts of the api to the usb controller hardware,
+ *      endpoint related parts of the api to the usb controller hardware,
  *      used by gadget driver; and the inner talker-to-hardware core.
  * ---------------------------------------------------------------------------
  */
@@ -293,7 +293,7 @@ static int pxa2xx_ep_enable (struct usb_ep *_ep,
 
 #ifdef  USE_DMA
         /* for (some) bulk and ISO endpoints, try to get a DMA channel and
-         * bind it to the endpoint.  otherwise use PIO. 
+         * bind it to the endpoint.  otherwise use PIO.
          */
         switch (ep->bmAttributes) {
         case USB_ENDPOINT_XFER_ISOC:
@@ -304,7 +304,7 @@ static int pxa2xx_ep_enable (struct usb_ep *_ep,
                 if (!use_dma || !ep->reg_drcmr)
                         break;
                 ep->dma = pxa_request_dma ((char *)_ep->name,
-                                (le16_to_cpu (desc->wMaxPacketSize) > 64)
+                                (le16_to_cpu (desc->wMaxPacketSize) > 64)
                                         ? DMA_PRIO_MEDIUM /* some iso */
                                         : DMA_PRIO_LOW,
                                 dma_nodesc_handler, ep);
@@ -361,7 +361,7 @@ static int pxa2xx_ep_disable (struct usb_ep *_ep)
  */
 
 /*
- *      pxa2xx_ep_alloc_request - allocate a request data structure
+ *      pxa2xx_ep_alloc_request - allocate a request data structure
  */
 static struct usb_request *
 pxa2xx_ep_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags)
@@ -378,7 +378,7 @@ pxa2xx_ep_alloc_request (struct usb_ep *_ep, gfp_t gfp_flags)
 
 
 /*
- *      pxa2xx_ep_free_request - deallocate a request data structure
+ *      pxa2xx_ep_free_request - deallocate a request data structure
  */
 static void
 pxa2xx_ep_free_request (struct usb_ep *_ep, struct usb_request *_req)
@@ -1031,7 +1031,7 @@ pxa2xx_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
 
 
 /*
- *      nuke - dequeue ALL requests
+ *      nuke - dequeue ALL requests
  */
 static void nuke(struct pxa2xx_ep *ep, int status)
 {
@@ -1136,16 +1136,16 @@ static int pxa2xx_ep_set_halt(struct usb_ep *_ep, int value)
                 ep->dev->req_pending = 0;
                 ep->dev->ep0state = EP0_STALL;
 
-        /* and bulk/intr endpoints like dropping stalls too */
-        } else {
-                unsigned i;
-                for (i = 0; i < 1000; i += 20) {
-                        if (*ep->reg_udccs & UDCCS_BI_SST)
-                                break;
-                        udelay(20);
-                }
-        }
-        local_irq_restore(flags);
+        /* and bulk/intr endpoints like dropping stalls too */
+        } else {
+                unsigned i;
+                for (i = 0; i < 1000; i += 20) {
+                        if (*ep->reg_udccs & UDCCS_BI_SST)
+                                break;
+                        udelay(20);
+                }
+        }
+        local_irq_restore(flags);
 
         DBG(DBG_VERBOSE, "%s halt\n", _ep->name);
         return 0;
@@ -1216,7 +1216,7 @@ static struct usb_ep_ops pxa2xx_ep_ops = {
 
 
 /* ---------------------------------------------------------------------------
- *      device-scoped parts of the api to the usb controller hardware
+ *      device-scoped parts of the api to the usb controller hardware
  * ---------------------------------------------------------------------------
  */
 
@@ -1239,7 +1239,7 @@ static void udc_enable (struct pxa2xx_udc *);
 static void udc_disable(struct pxa2xx_udc *);
 
 /* We disable the UDC -- and its 48 MHz clock -- whenever it's not
- * in active use.  
+ * in active use.
  */
 static int pullup(struct pxa2xx_udc *udc, int is_active)
 {
@@ -1464,24 +1464,10 @@ done:
 
 #endif  /* CONFIG_USB_GADGET_DEBUG_FILES */
 
-/* "function" sysfs attribute */
-static ssize_t
-show_function (struct device *_dev, struct device_attribute *attr, char *buf)
-{
-        struct pxa2xx_udc       *dev = dev_get_drvdata (_dev);
-
-        if (!dev->driver
-                        || !dev->driver->function
-                        || strlen (dev->driver->function) > PAGE_SIZE)
-                return 0;
-        return scnprintf (buf, PAGE_SIZE, "%s\n", dev->driver->function);
-}
-static DEVICE_ATTR (function, S_IRUGO, show_function, NULL);
-
 /*-------------------------------------------------------------------------*/
 
 /*
- *      udc_disable - disable USB device controller
+ *      udc_disable - disable USB device controller
  */
 static void udc_disable(struct pxa2xx_udc *dev)
 {
@@ -1507,7 +1493,7 @@ static void udc_disable(struct pxa2xx_udc *dev)
 
 
 /*
- *      udc_reinit - initialize software state
+ *      udc_reinit - initialize software state
  */
 static void udc_reinit(struct pxa2xx_udc *dev)
 {
@@ -1635,18 +1621,20 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
         dev->gadget.dev.driver = &driver->driver;
         dev->pullup = 1;
 
-        device_add (&dev->gadget.dev);
+        retval = device_add (&dev->gadget.dev);
+        if (retval) {
+fail:
+                dev->driver = NULL;
+                dev->gadget.dev.driver = NULL;
+                return retval;
+        }
         retval = driver->bind(&dev->gadget);
         if (retval) {
                 DMSG("bind to driver %s --> error %d\n",
                                 driver->driver.name, retval);
                 device_del (&dev->gadget.dev);
-
-                dev->driver = NULL;
-                dev->gadget.dev.driver = NULL;
-                return retval;
+                goto fail;
         }
-        device_create_file(dev->dev, &dev_attr_function);
 
         /* ... then enable host detection and ep0; and we're ready
          * for set_configuration as well as eventual disconnect.
@@ -1704,7 +1692,6 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
         dev->driver = NULL;
 
         device_del (&dev->gadget.dev);
-        device_remove_file(dev->dev, &dev_attr_function);
 
         DMSG("unregistered gadget driver '%s'\n", driver->driver.name);
         dump_state(dev);
@@ -2474,12 +2461,12 @@ static struct pxa2xx_udc memory = {
 #define IXP465_AD               0x00000200
 
 /*
- *      probe - binds to the platform device
+ *      probe - binds to the platform device
  */
 static int __init pxa2xx_udc_probe(struct platform_device *pdev)
 {
         struct pxa2xx_udc *dev = &memory;
-        int retval, out_dma = 1, vbus_irq;
+        int retval, out_dma = 1, vbus_irq, irq;
         u32 chiprev;
 
         /* insist on Intel/ARM/XScale */
@@ -2522,7 +2509,11 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
                 return -ENODEV;
         }
 
-        pr_debug("%s: IRQ %d%s%s%s\n", driver_name, IRQ_USB,
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0)
+                return -ENODEV;
+
+        pr_debug("%s: IRQ %d%s%s%s\n", driver_name, irq,
                 dev->has_cfr ? "" : " (!cfr)",
                 out_dma ? "" : " (broken dma-out)",
                 SIZE_STR DMASTR
@@ -2570,11 +2561,11 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
         dev->vbus = is_vbus_present();
 
         /* irq setup after old hardware state is cleaned up */
-        retval = request_irq(IRQ_USB, pxa2xx_udc_irq,
+        retval = request_irq(irq, pxa2xx_udc_irq,
                         IRQF_DISABLED, driver_name, dev);
         if (retval != 0) {
-                printk(KERN_ERR "%s: can't get irq %i, err %d\n",
-                        driver_name, IRQ_USB, retval);
+                printk(KERN_ERR "%s: can't get irq %d, err %d\n",
+                        driver_name, irq, retval);
                 return -EBUSY;
         }
         dev->got_irq = 1;
@@ -2589,7 +2580,7 @@ static int __init pxa2xx_udc_probe(struct platform_device *pdev)
                         printk(KERN_ERR "%s: can't get irq %i, err %d\n",
                                 driver_name, LUBBOCK_USB_DISC_IRQ, retval);
 lubbock_fail0:
-                        free_irq(IRQ_USB, dev);
+                        free_irq(irq, dev);
                         return -EBUSY;
                 }
                 retval = request_irq(LUBBOCK_USB_IRQ,
@@ -2616,7 +2607,7 @@ lubbock_fail0:
                 if (retval != 0) {
                         printk(KERN_ERR "%s: can't get irq %i, err %d\n",
                                 driver_name, vbus_irq, retval);
-                        free_irq(IRQ_USB, dev);
+                        free_irq(irq, dev);
                         return -EBUSY;
                 }
         }
@@ -2641,7 +2632,7 @@ static int __exit pxa2xx_udc_remove(struct platform_device *pdev)
         remove_proc_files();
 
         if (dev->got_irq) {
-                free_irq(IRQ_USB, dev);
+                free_irq(platform_get_irq(pdev, 0), dev);
                 dev->got_irq = 0;
         }
 #ifdef CONFIG_ARCH_LUBBOCK
@@ -2668,7 +2659,7 @@ static int __exit pxa2xx_udc_remove(struct platform_device *pdev)
  *
  * For now, we punt and forcibly disconnect from the USB host when PXA
  * enters any suspend state.  While we're disconnected, we always disable
- * the 48MHz USB clock ... allowing PXA sleep and/or 33 MHz idle states. 
+ * the 48MHz USB clock ... allowing PXA sleep and/or 33 MHz idle states.
  * Boards without software pullup control shouldn't use those states.
  * VBUS IRQs should probably be ignored so that the PXA device just acts
  * "dead" to USB hosts until system resume.
@@ -2701,7 +2692,6 @@ static int pxa2xx_udc_resume(struct platform_device *dev)
 /*-------------------------------------------------------------------------*/
 
 static struct platform_driver udc_driver = {
-        .probe          = pxa2xx_udc_probe,
         .shutdown       = pxa2xx_udc_shutdown,
         .remove         = __exit_p(pxa2xx_udc_remove),
         .suspend        = pxa2xx_udc_suspend,
@@ -2715,7 +2705,7 @@ static struct platform_driver udc_driver = {
 static int __init udc_init(void)
 {
         printk(KERN_INFO "%s: version %s\n", driver_name, DRIVER_VERSION);
-        return platform_driver_register(&udc_driver);
+        return platform_driver_probe(&udc_driver, pxa2xx_udc_probe);
 }
 module_init(udc_init);
 
diff --git a/drivers/usb/gadget/rndis.h b/drivers/usb/gadget/rndis.h
index 4c3c7259f019..397b149f3ca7 100644
--- a/drivers/usb/gadget/rndis.h
+++ b/drivers/usb/gadget/rndis.h
@@ -195,7 +195,7 @@ struct rndis_packet_msg_type
         __le32  PerPacketInfoLength;
         __le32  VcHandle;
         __le32  Reserved;
-};
+} __attribute__ ((packed));
 
 struct rndis_config_parameter
 {
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index a2e58c86849f..2ff396bd180f 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -15,4 +15,3 @@ obj-$(CONFIG_USB_UHCI_HCD)	+= uhci-hcd.o
 obj-$(CONFIG_USB_SL811_HCD)     += sl811-hcd.o
 obj-$(CONFIG_USB_SL811_CS)      += sl811_cs.o
 obj-$(CONFIG_USB_U132_HCD)      += u132-hcd.o
-obj-$(CONFIG_ETRAX_ARCH_V10)    += hc_crisv10.o
diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h
index caac0d1967d0..f28736a917e4 100644
--- a/drivers/usb/host/ehci-fsl.h
+++ b/drivers/usb/host/ehci-fsl.h
@@ -31,7 +31,7 @@
 #define FSL_SOC_USB_SNOOP1      0x400   /* NOTE: big-endian */
 #define FSL_SOC_USB_SNOOP2      0x404   /* NOTE: big-endian */
 #define FSL_SOC_USB_AGECNTTHRSH 0x408   /* NOTE: big-endian */
-#define FSL_SOC_USB_SICTRL      0x40c   /* NOTE: big-endian */
-#define FSL_SOC_USB_PRICTRL     0x410   /* NOTE: big-endian */
+#define FSL_SOC_USB_PRICTRL     0x40c   /* NOTE: big-endian */
+#define FSL_SOC_USB_SICTRL      0x410   /* NOTE: big-endian */
 #define FSL_SOC_USB_CTRL        0x500   /* NOTE: big-endian */
 #endif                          /* _EHCI_FSL_H */
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index a74056488234..c7458f7e56cc 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -669,6 +669,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd)
                          */
                         ehci->reset_done [i] = jiffies + msecs_to_jiffies (20);
                         ehci_dbg (ehci, "port %d remote wakeup\n", i + 1);
+                        mod_timer(&hcd->rh_timer, ehci->reset_done[i]);
                 }
         }
 
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 1813b7cac294..f4d301bc83b9 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -136,6 +136,10 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
         /* restore CMD_RUN, framelist size, and irq threshold */
         ehci_writel(ehci, ehci->command, &ehci->regs->command);
 
+        /* Some controller/firmware combinations need a delay during which
+         * they set up the port statuses.  See Bugzilla #8190. */
+        mdelay(8);
+
         /* manually resume the ports we suspended during bus_suspend() */
         i = HCS_N_PORTS (ehci->hcs_params);
         while (i--) {
diff --git a/drivers/usb/host/hc_crisv10.c b/drivers/usb/host/hc_crisv10.c
deleted file mode 100644
index 32f7caf24747..000000000000
--- a/drivers/usb/host/hc_crisv10.c
+++ /dev/null
@@ -1,4550 +0,0 @@
-/*
- * usb-host.c: ETRAX 100LX USB Host Controller Driver (HCD)
- *
- * Copyright (c) 2002, 2003 Axis Communications AB.
- */
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/unistd.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/spinlock.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/dma.h>
-#include <asm/system.h>
-#include <asm/arch/svinto.h>
-
-#include <linux/usb.h>
-/* Ugly include because we don't live with the other host drivers. */
-#include <../drivers/usb/core/hcd.h>
-#include <../drivers/usb/core/usb.h>
-
-#include "hc_crisv10.h"
-
-#define ETRAX_USB_HC_IRQ USB_HC_IRQ_NBR
-#define ETRAX_USB_RX_IRQ USB_DMA_RX_IRQ_NBR
-#define ETRAX_USB_TX_IRQ USB_DMA_TX_IRQ_NBR
-
-static const char *usb_hcd_version = "$Revision: 1.2 $";
-
-#undef KERN_DEBUG
-#define KERN_DEBUG ""
-
-
-#undef USB_DEBUG_RH
-#undef USB_DEBUG_EPID
-#undef USB_DEBUG_SB
-#undef USB_DEBUG_DESC
-#undef USB_DEBUG_URB
-#undef USB_DEBUG_TRACE
-#undef USB_DEBUG_BULK
-#undef USB_DEBUG_CTRL
-#undef USB_DEBUG_INTR
-#undef USB_DEBUG_ISOC
-
-#ifdef USB_DEBUG_RH
-#define dbg_rh(format, arg...) printk(KERN_DEBUG __FILE__ ": (RH) " format "\n" , ## arg)
-#else
-#define dbg_rh(format, arg...) do {} while (0)
-#endif
-
-#ifdef USB_DEBUG_EPID
-#define dbg_epid(format, arg...) printk(KERN_DEBUG __FILE__ ": (EPID) " format "\n" , ## arg)
-#else
-#define dbg_epid(format, arg...) do {} while (0)
-#endif
-
-#ifdef USB_DEBUG_SB
-#define dbg_sb(format, arg...) printk(KERN_DEBUG __FILE__ ": (SB) " format "\n" , ## arg)
-#else
-#define dbg_sb(format, arg...) do {} while (0)
-#endif
-
-#ifdef USB_DEBUG_CTRL
-#define dbg_ctrl(format, arg...) printk(KERN_DEBUG __FILE__ ": (CTRL) " format "\n" , ## arg)
-#else
-#define dbg_ctrl(format, arg...) do {} while (0)
-#endif
-
-#ifdef USB_DEBUG_BULK
-#define dbg_bulk(format, arg...) printk(KERN_DEBUG __FILE__ ": (BULK) " format "\n" , ## arg)
-#else
-#define dbg_bulk(format, arg...) do {} while (0)
-#endif
-
-#ifdef USB_DEBUG_INTR
-#define dbg_intr(format, arg...) printk(KERN_DEBUG __FILE__ ": (INTR) " format "\n" , ## arg)
-#else
-#define dbg_intr(format, arg...) do {} while (0)
-#endif
-
-#ifdef USB_DEBUG_ISOC
-#define dbg_isoc(format, arg...) printk(KERN_DEBUG __FILE__ ": (ISOC) " format "\n" , ## arg)
-#else
-#define dbg_isoc(format, arg...) do {} while (0)
-#endif
-
-#ifdef USB_DEBUG_TRACE
-#define DBFENTER (printk(": Entering: %s\n", __FUNCTION__))
-#define DBFEXIT  (printk(": Exiting:  %s\n", __FUNCTION__))
-#else
-#define DBFENTER do {} while (0)
-#define DBFEXIT  do {} while (0)
-#endif
-
-#define usb_pipeslow(pipe)      (((pipe) >> 26) & 1)
-
-/*-------------------------------------------------------------------
- Virtual Root Hub
- -------------------------------------------------------------------*/
-
-static __u8 root_hub_dev_des[] =
-{
-        0x12,  /*  __u8  bLength; */
-        0x01,  /*  __u8  bDescriptorType; Device */
-        0x00,  /*  __le16 bcdUSB; v1.0 */
-        0x01,
-        0x09,  /*  __u8  bDeviceClass; HUB_CLASSCODE */
-        0x00,  /*  __u8  bDeviceSubClass; */
-        0x00,  /*  __u8  bDeviceProtocol; */
-        0x08,  /*  __u8  bMaxPacketSize0; 8 Bytes */
-        0x00,  /*  __le16 idVendor; */
-        0x00,
-        0x00,  /*  __le16 idProduct; */
-        0x00,
-        0x00,  /*  __le16 bcdDevice; */
-        0x00,
-        0x00,  /*  __u8  iManufacturer; */
-        0x02,  /*  __u8  iProduct; */
-        0x01,  /*  __u8  iSerialNumber; */
-        0x01   /*  __u8  bNumConfigurations; */
-};
-
-/* Configuration descriptor */
-static __u8 root_hub_config_des[] =
-{
-        0x09,  /*  __u8  bLength; */
-        0x02,  /*  __u8  bDescriptorType; Configuration */
-        0x19,  /*  __le16 wTotalLength; */
-        0x00,
-        0x01,  /*  __u8  bNumInterfaces; */
-        0x01,  /*  __u8  bConfigurationValue; */
-        0x00,  /*  __u8  iConfiguration; */
-        0x40,  /*  __u8  bmAttributes; Bit 7: Bus-powered */
-        0x00,  /*  __u8  MaxPower; */
-
-     /* interface */
-        0x09,  /*  __u8  if_bLength; */
-        0x04,  /*  __u8  if_bDescriptorType; Interface */
-        0x00,  /*  __u8  if_bInterfaceNumber; */
-        0x00,  /*  __u8  if_bAlternateSetting; */
-        0x01,  /*  __u8  if_bNumEndpoints; */
-        0x09,  /*  __u8  if_bInterfaceClass; HUB_CLASSCODE */
-        0x00,  /*  __u8  if_bInterfaceSubClass; */
-        0x00,  /*  __u8  if_bInterfaceProtocol; */
-        0x00,  /*  __u8  if_iInterface; */
-
-     /* endpoint */
-        0x07,  /*  __u8  ep_bLength; */
-        0x05,  /*  __u8  ep_bDescriptorType; Endpoint */
-        0x81,  /*  __u8  ep_bEndpointAddress; IN Endpoint 1 */
-        0x03,  /*  __u8  ep_bmAttributes; Interrupt */
-        0x08,  /*  __le16 ep_wMaxPacketSize; 8 Bytes */
-        0x00,
-        0xff   /*  __u8  ep_bInterval; 255 ms */
-};
-
-static __u8 root_hub_hub_des[] =
-{
-        0x09,  /*  __u8  bLength; */
-        0x29,  /*  __u8  bDescriptorType; Hub-descriptor */
-        0x02,  /*  __u8  bNbrPorts; */
-        0x00,  /* __u16  wHubCharacteristics; */
-        0x00,
-        0x01,  /*  __u8  bPwrOn2pwrGood; 2ms */
-        0x00,  /*  __u8  bHubContrCurrent; 0 mA */
-        0x00,  /*  __u8  DeviceRemovable; *** 7 Ports max *** */
-        0xff   /*  __u8  PortPwrCtrlMask; *** 7 ports max *** */
-};
-
-static DEFINE_TIMER(bulk_start_timer, NULL, 0, 0);
-static DEFINE_TIMER(bulk_eot_timer, NULL, 0, 0);
-
-/* We want the start timer to expire before the eot timer, because the former might start
-   traffic, thus making it unnecessary for the latter to time out. */
-#define BULK_START_TIMER_INTERVAL (HZ/10) /* 100 ms */
-#define BULK_EOT_TIMER_INTERVAL (HZ/10+2) /* 120 ms */
-
-#define OK(x) len = (x); dbg_rh("OK(%d): line: %d", x, __LINE__); break
-#define CHECK_ALIGN(x) if (((__u32)(x)) & 0x00000003) \
-{panic("Alignment check (DWORD) failed at %s:%s:%d\n", __FILE__, __FUNCTION__, __LINE__);}
-
-#define SLAB_FLAG     (in_interrupt() ? GFP_ATOMIC : GFP_KERNEL)
-#define KMALLOC_FLAG  (in_interrupt() ? GFP_ATOMIC : GFP_KERNEL)
-
-/* Most helpful debugging aid */
-#define assert(expr) ((void) ((expr) ? 0 : (err("assert failed at line %d",__LINE__))))
-
-/* Alternative assert define which stops after a failed assert. */
-/*
-#define assert(expr)                                      \
-{                                                         \
-        if (!(expr)) {                                    \
-                err("assert failed at line %d",__LINE__); \
-                while (1);                                \
-        }                                                 \
-}
-*/
-
-
-/* FIXME: Should RX_BUF_SIZE be a config option, or maybe we should adjust it dynamically?
-   To adjust it dynamically we would have to get an interrupt when we reach the end
-   of the rx descriptor list, or when we get close to the end, and then allocate more
-   descriptors. */
-
-#define NBR_OF_RX_DESC     512
-#define RX_DESC_BUF_SIZE   1024
-#define RX_BUF_SIZE        (NBR_OF_RX_DESC * RX_DESC_BUF_SIZE)
-
-/* The number of epids is, among other things, used for pre-allocating
-   ctrl, bulk and isoc EP descriptors (one for each epid).
-   Assumed to be > 1 when initiating the DMA lists. */
-#define NBR_OF_EPIDS       32
-
-/* Support interrupt traffic intervals up to 128 ms. */
-#define MAX_INTR_INTERVAL 128
-
-/* If periodic traffic (intr or isoc) is to be used, then one entry in the EP table
-   must be "invalid". By this we mean that we shouldn't care about epid attentions
-   for this epid, or at least handle them differently from epid attentions for "valid"
-   epids. This define determines which one to use (don't change it). */
-#define INVALID_EPID     31
-/* A special epid for the bulk dummys. */
-#define DUMMY_EPID       30
-
-/* This is just a software cache for the valid entries in R_USB_EPT_DATA. */
-static __u32 epid_usage_bitmask;
-
-/* A bitfield to keep information on in/out traffic is needed to uniquely identify
-   an endpoint on a device, since the most significant bit which indicates traffic
-   direction is lacking in the ep_id field (ETRAX epids can handle both in and
-   out traffic on endpoints that are otherwise identical). The USB framework, however,
-   relies on them to be handled separately.  For example, bulk IN and OUT urbs cannot
-   be queued in the same list, since they would block each other. */
-static __u32 epid_out_traffic;
-
-/* DMA IN cache bug. Align the DMA IN buffers to 32 bytes, i.e. a cache line.
-   Since RX_DESC_BUF_SIZE is 1024 is a multiple of 32, all rx buffers will be cache aligned. */
-static volatile unsigned char RxBuf[RX_BUF_SIZE] __attribute__ ((aligned (32)));
-static volatile USB_IN_Desc_t RxDescList[NBR_OF_RX_DESC] __attribute__ ((aligned (4)));
-
-/* Pointers into RxDescList. */
-static volatile USB_IN_Desc_t *myNextRxDesc;
-static volatile USB_IN_Desc_t *myLastRxDesc;
-static volatile USB_IN_Desc_t *myPrevRxDesc;
-
-/* EP descriptors must be 32-bit aligned. */
-static volatile USB_EP_Desc_t TxCtrlEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4)));
-static volatile USB_EP_Desc_t TxBulkEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4)));
-/* After each enabled bulk EP (IN or OUT) we put two disabled EP descriptors with the eol flag set,
-   causing the DMA to stop the DMA channel. The first of these two has the intr flag set, which
-   gives us a dma8_sub0_descr interrupt. When we receive this, we advance the DMA one step in the
-   EP list and then restart the bulk channel, thus forcing a switch between bulk EP descriptors
-   in each frame. */
-static volatile USB_EP_Desc_t TxBulkDummyEPList[NBR_OF_EPIDS][2] __attribute__ ((aligned (4)));
-
-static volatile USB_EP_Desc_t TxIsocEPList[NBR_OF_EPIDS] __attribute__ ((aligned (4)));
-static volatile USB_SB_Desc_t TxIsocSB_zout __attribute__ ((aligned (4)));
-
-static volatile USB_EP_Desc_t TxIntrEPList[MAX_INTR_INTERVAL] __attribute__ ((aligned (4)));
-static volatile USB_SB_Desc_t TxIntrSB_zout __attribute__ ((aligned (4)));
-
-/* A zout transfer makes a memory access at the address of its buf pointer, which means that setting
-   this buf pointer to 0 will cause an access to the flash. In addition to this, setting sw_len to 0
-   results in a 16/32 bytes (depending on DMA burst size) transfer. Instead, we set it to 1, and point
-   it to this buffer. */
-static int zout_buffer[4] __attribute__ ((aligned (4)));
-
-/* Cache for allocating new EP and SB descriptors. */
-static struct kmem_cache *usb_desc_cache;
-
-/* Cache for the registers allocated in the top half. */
-static struct kmem_cache *top_half_reg_cache;
-
-/* Cache for the data allocated in the isoc descr top half. */
-static struct kmem_cache *isoc_compl_cache;
-
-static struct usb_bus *etrax_usb_bus;
-
-/* This is a circular (double-linked) list of the active urbs for each epid.
-   The head is never removed, and new urbs are linked onto the list as
-   urb_entry_t elements. Don't reference urb_list directly; use the wrapper
-   functions instead. Note that working with these lists might require spinlock
-   protection. */
-static struct list_head urb_list[NBR_OF_EPIDS];
-
-/* Read about the need and usage of this lock in submit_ctrl_urb. */
-static spinlock_t urb_list_lock;
-
-/* Used when unlinking asynchronously. */
-static struct list_head urb_unlink_list;
-
-/* for returning string descriptors in UTF-16LE */
-static int ascii2utf (char *ascii, __u8 *utf, int utfmax)
-{
-        int retval;
-
-        for (retval = 0; *ascii && utfmax > 1; utfmax -= 2, retval += 2) {
-                *utf++ = *ascii++ & 0x7f;
-                *utf++ = 0;
-        }
-        return retval;
-}
-
-static int usb_root_hub_string (int id, int serial, char *type, __u8 *data, int len)
-{
-        char buf [30];
-
-        // assert (len > (2 * (sizeof (buf) + 1)));
-        // assert (strlen (type) <= 8);
-
-        // language ids
-        if (id == 0) {
-                *data++ = 4; *data++ = 3;       /* 4 bytes data */
-                *data++ = 0; *data++ = 0;       /* some language id */
-                return 4;
-
-        // serial number
-        } else if (id == 1) {
-                sprintf (buf, "%x", serial);
-
-        // product description
-        } else if (id == 2) {
-                sprintf (buf, "USB %s Root Hub", type);
-
-        // id 3 == vendor description
-
-        // unsupported IDs --> "stall"
-        } else
-            return 0;
-
-        data [0] = 2 + ascii2utf (buf, data + 2, len - 2);
-        data [1] = 3;
-        return data [0];
-}
-
-/* Wrappers around the list functions (include/linux/list.h). */
-
-static inline int urb_list_empty(int epid)
-{
-        return list_empty(&urb_list[epid]);
-}
-
-/* Returns first urb for this epid, or NULL if list is empty. */
-static inline struct urb *urb_list_first(int epid)
-{
-        struct urb *first_urb = 0;
-
-        if (!urb_list_empty(epid)) {
-                /* Get the first urb (i.e. head->next). */
-                urb_entry_t *urb_entry = list_entry((&urb_list[epid])->next, urb_entry_t, list);
-                first_urb = urb_entry->urb;
-        }
-        return first_urb;
-}
-
-/* Adds an urb_entry last in the list for this epid. */
-static inline void urb_list_add(struct urb *urb, int epid)
-{
-        urb_entry_t *urb_entry = kmalloc(sizeof(urb_entry_t), KMALLOC_FLAG);
-        assert(urb_entry);
-
-        urb_entry->urb = urb;
-        list_add_tail(&urb_entry->list, &urb_list[epid]);
-}
-
-/* Search through the list for an element that contains this urb. (The list
-   is expected to be short and the one we are about to delete will often be
-   the first in the list.) */
-static inline urb_entry_t *__urb_list_entry(struct urb *urb, int epid)
-{
-        struct list_head *entry;
-        struct list_head *tmp;
-        urb_entry_t *urb_entry;
-
-        list_for_each_safe(entry, tmp, &urb_list[epid]) {
-                urb_entry = list_entry(entry, urb_entry_t, list);
-                assert(urb_entry);
-                assert(urb_entry->urb);
-
-                if (urb_entry->urb == urb) {
-                        return urb_entry;
-                }
-        }
-        return 0;
-}
-
-/* Delete an urb from the list. */
-static inline void urb_list_del(struct urb *urb, int epid)
-{
-        urb_entry_t *urb_entry = __urb_list_entry(urb, epid);
-        assert(urb_entry);
-
-        /* Delete entry and free. */
-        list_del(&urb_entry->list);
-        kfree(urb_entry);
-}
-
-/* Move an urb to the end of the list. */
-static inline void urb_list_move_last(struct urb *urb, int epid)
-{
-        urb_entry_t *urb_entry = __urb_list_entry(urb, epid);
-        assert(urb_entry);
-
-        list_move_tail(&urb_entry->list, &urb_list[epid]);
-}
-
-/* Get the next urb in the list. */
-static inline struct urb *urb_list_next(struct urb *urb, int epid)
-{
-        urb_entry_t *urb_entry = __urb_list_entry(urb, epid);
-
-        assert(urb_entry);
-
-        if (urb_entry->list.next != &urb_list[epid]) {
-                struct list_head *elem = urb_entry->list.next;
-                urb_entry = list_entry(elem, urb_entry_t, list);
-                return urb_entry->urb;
-        } else {
-                return NULL;
-        }
-}
-
-
-
-/* For debug purposes only. */
-static inline void urb_list_dump(int epid)
-{
-        struct list_head *entry;
-        struct list_head *tmp;
-        urb_entry_t *urb_entry;
-        int i = 0;
-
-        info("Dumping urb list for epid %d", epid);
-
-        list_for_each_safe(entry, tmp, &urb_list[epid]) {
-                urb_entry = list_entry(entry, urb_entry_t, list);
-                info("   entry %d, urb = 0x%lx", i, (unsigned long)urb_entry->urb);
-        }
-}
-
-static void init_rx_buffers(void);
-static int etrax_rh_unlink_urb(struct urb *urb);
-static void etrax_rh_send_irq(struct urb *urb);
-static void etrax_rh_init_int_timer(struct urb *urb);
-static void etrax_rh_int_timer_do(unsigned long ptr);
-
-static int etrax_usb_setup_epid(struct urb *urb);
-static int etrax_usb_lookup_epid(struct urb *urb);
-static int etrax_usb_allocate_epid(void);
-static void etrax_usb_free_epid(int epid);
-
-static int etrax_remove_from_sb_list(struct urb *urb);
-
-static void* etrax_usb_buffer_alloc(struct usb_bus* bus, size_t size,
-        unsigned mem_flags, dma_addr_t *dma);
-static void etrax_usb_buffer_free(struct usb_bus *bus, size_t size, void *addr, dma_addr_t dma);
-
-static void etrax_usb_add_to_bulk_sb_list(struct urb *urb, int epid);
-static void etrax_usb_add_to_ctrl_sb_list(struct urb *urb, int epid);
-static void etrax_usb_add_to_intr_sb_list(struct urb *urb, int epid);
-static void etrax_usb_add_to_isoc_sb_list(struct urb *urb, int epid);
-
-static int etrax_usb_submit_bulk_urb(struct urb *urb);
-static int etrax_usb_submit_ctrl_urb(struct urb *urb);
-static int etrax_usb_submit_intr_urb(struct urb *urb);
-static int etrax_usb_submit_isoc_urb(struct urb *urb);
-
-static int etrax_usb_submit_urb(struct urb *urb, unsigned mem_flags);
-static int etrax_usb_unlink_urb(struct urb *urb, int status);
-static int etrax_usb_get_frame_number(struct usb_device *usb_dev);
-
-static irqreturn_t etrax_usb_tx_interrupt(int irq, void *vhc);
-static irqreturn_t etrax_usb_rx_interrupt(int irq, void *vhc);
-static irqreturn_t etrax_usb_hc_interrupt_top_half(int irq, void *vhc);
-static void etrax_usb_hc_interrupt_bottom_half(void *data);
-
-static void etrax_usb_isoc_descr_interrupt_bottom_half(void *data);
-
-
-/* The following is a list of interrupt handlers for the host controller interrupts we use.
-   They are called from etrax_usb_hc_interrupt_bottom_half. */
-static void etrax_usb_hc_isoc_eof_interrupt(void);
-static void etrax_usb_hc_bulk_eot_interrupt(int timer_induced);
-static void etrax_usb_hc_epid_attn_interrupt(usb_interrupt_registers_t *reg);
-static void etrax_usb_hc_port_status_interrupt(usb_interrupt_registers_t *reg);
-static void etrax_usb_hc_ctl_status_interrupt(usb_interrupt_registers_t *reg);
-
-static int etrax_rh_submit_urb (struct urb *urb);
-
-/* Forward declaration needed because they are used in the rx interrupt routine. */
-static void etrax_usb_complete_urb(struct urb *urb, int status);
-static void etrax_usb_complete_bulk_urb(struct urb *urb, int status);
-static void etrax_usb_complete_ctrl_urb(struct urb *urb, int status);
-static void etrax_usb_complete_intr_urb(struct urb *urb, int status);
-static void etrax_usb_complete_isoc_urb(struct urb *urb, int status);
-
-static int etrax_usb_hc_init(void);
-static void etrax_usb_hc_cleanup(void);
-
-static struct usb_operations etrax_usb_device_operations =
-{
-        .get_frame_number = etrax_usb_get_frame_number,
-        .submit_urb = etrax_usb_submit_urb,
-        .unlink_urb = etrax_usb_unlink_urb,
-        .buffer_alloc = etrax_usb_buffer_alloc,
-        .buffer_free = etrax_usb_buffer_free
-};
-
-/* Note that these functions are always available in their "__" variants, for use in
-   error situations. The "__" missing variants are controlled by the USB_DEBUG_DESC/
-   USB_DEBUG_URB macros. */
-static void __dump_urb(struct urb* purb)
-{
-        printk("\nurb                  :0x%08lx\n", (unsigned long)purb);
-        printk("dev                   :0x%08lx\n", (unsigned long)purb->dev);
-        printk("pipe                  :0x%08x\n", purb->pipe);
-        printk("status                :%d\n", purb->status);
-        printk("transfer_flags        :0x%08x\n", purb->transfer_flags);
-        printk("transfer_buffer       :0x%08lx\n", (unsigned long)purb->transfer_buffer);
-        printk("transfer_buffer_length:%d\n", purb->transfer_buffer_length);
-        printk("actual_length         :%d\n", purb->actual_length);
-        printk("setup_packet          :0x%08lx\n", (unsigned long)purb->setup_packet);
-        printk("start_frame           :%d\n", purb->start_frame);
-        printk("number_of_packets     :%d\n", purb->number_of_packets);
-        printk("interval              :%d\n", purb->interval);
-        printk("error_count           :%d\n", purb->error_count);
-        printk("context               :0x%08lx\n", (unsigned long)purb->context);
-        printk("complete              :0x%08lx\n\n", (unsigned long)purb->complete);
-}
-
-static void __dump_in_desc(volatile USB_IN_Desc_t *in)
-{
-        printk("\nUSB_IN_Desc at 0x%08lx\n", (unsigned long)in);
-        printk("  sw_len  : 0x%04x (%d)\n", in->sw_len, in->sw_len);
-        printk("  command : 0x%04x\n", in->command);
-        printk("  next    : 0x%08lx\n", in->next);
-        printk("  buf     : 0x%08lx\n", in->buf);
-        printk("  hw_len  : 0x%04x (%d)\n", in->hw_len, in->hw_len);
-        printk("  status  : 0x%04x\n\n", in->status);
-}
-
-static void __dump_sb_desc(volatile USB_SB_Desc_t *sb)
-{
-        char tt = (sb->command & 0x30) >> 4;
-        char *tt_string;
-
-        switch (tt) {
-        case 0:
-                tt_string = "zout";
-                break;
-        case 1:
-                tt_string = "in";
-                break;
-        case 2:
-                tt_string = "out";
-                break;
-        case 3:
-                tt_string = "setup";
-                break;
-        default:
-                tt_string = "unknown (weird)";
-        }
-
-        printk("\n   USB_SB_Desc at 0x%08lx\n", (unsigned long)sb);
-        printk("     command : 0x%04x\n", sb->command);
-        printk("        rem     : %d\n", (sb->command & 0x3f00) >> 8);
-        printk("        full    : %d\n", (sb->command & 0x40) >> 6);
-        printk("        tt      : %d (%s)\n", tt, tt_string);
-        printk("        intr    : %d\n", (sb->command & 0x8) >> 3);
-        printk("        eot     : %d\n", (sb->command & 0x2) >> 1);
-        printk("        eol     : %d\n", sb->command & 0x1);
-        printk("     sw_len  : 0x%04x (%d)\n", sb->sw_len, sb->sw_len);
-        printk("     next    : 0x%08lx\n", sb->next);
-        printk("     buf     : 0x%08lx\n\n", sb->buf);
-}
-
-
-static void __dump_ep_desc(volatile USB_EP_Desc_t *ep)
-{
-        printk("\nUSB_EP_Desc at 0x%08lx\n", (unsigned long)ep);
-        printk("  command : 0x%04x\n", ep->command);
-        printk("     ep_id   : %d\n", (ep->command & 0x1f00) >> 8);
-        printk("     enable  : %d\n", (ep->command & 0x10) >> 4);
-        printk("     intr    : %d\n", (ep->command & 0x8) >> 3);
-        printk("     eof     : %d\n", (ep->command & 0x2) >> 1);
-        printk("     eol     : %d\n", ep->command & 0x1);
-        printk("  hw_len  : 0x%04x (%d)\n", ep->hw_len, ep->hw_len);
-        printk("  next    : 0x%08lx\n", ep->next);
-        printk("  sub     : 0x%08lx\n\n", ep->sub);
-}
-
-static inline void __dump_ep_list(int pipe_type)
-{
-        volatile USB_EP_Desc_t *ep;
-        volatile USB_EP_Desc_t *first_ep;
-        volatile USB_SB_Desc_t *sb;
-
-        switch (pipe_type)
-        {
-        case PIPE_BULK:
-                first_ep = &TxBulkEPList[0];
-                break;
-        case PIPE_CONTROL:
-                first_ep = &TxCtrlEPList[0];
-                break;
-        case PIPE_INTERRUPT:
-                first_ep = &TxIntrEPList[0];
-                break;
-        case PIPE_ISOCHRONOUS:
-                first_ep = &TxIsocEPList[0];
-                break;
-        default:
-                warn("Cannot dump unknown traffic type");
-                return;
-        }
-        ep = first_ep;
-
-        printk("\n\nDumping EP list...\n\n");
-
-        do {
-                __dump_ep_desc(ep);
-                /* Cannot phys_to_virt on 0 as it turns into 80000000, which is != 0. */
-                sb = ep->sub ? phys_to_virt(ep->sub) : 0;
-                while (sb) {
-                        __dump_sb_desc(sb);
-                        sb = sb->next ? phys_to_virt(sb->next) : 0;
-                }
-                ep = (volatile USB_EP_Desc_t *)(phys_to_virt(ep->next));
-
-        } while (ep != first_ep);
-}
-
-static inline void __dump_ept_data(int epid)
-{
-        unsigned long flags;
-        __u32 r_usb_ept_data;
-
-        if (epid < 0 || epid > 31) {
-                printk("Cannot dump ept data for invalid epid %d\n", epid);
-                return;
-        }
-
-        save_flags(flags);
-        cli();
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-        nop();
-        r_usb_ept_data = *R_USB_EPT_DATA;
-        restore_flags(flags);
-
-        printk("\nR_USB_EPT_DATA = 0x%x for epid %d :\n", r_usb_ept_data, epid);
-        if (r_usb_ept_data == 0) {
-                /* No need for more detailed printing. */
-                return;
-        }
-        printk("  valid           : %d\n", (r_usb_ept_data & 0x80000000) >> 31);
-        printk("  hold            : %d\n", (r_usb_ept_data & 0x40000000) >> 30);
-        printk("  error_count_in  : %d\n", (r_usb_ept_data & 0x30000000) >> 28);
-        printk("  t_in            : %d\n", (r_usb_ept_data & 0x08000000) >> 27);
-        printk("  low_speed       : %d\n", (r_usb_ept_data & 0x04000000) >> 26);
-        printk("  port            : %d\n", (r_usb_ept_data & 0x03000000) >> 24);
-        printk("  error_code      : %d\n", (r_usb_ept_data & 0x00c00000) >> 22);
-        printk("  t_out           : %d\n", (r_usb_ept_data & 0x00200000) >> 21);
-        printk("  error_count_out : %d\n", (r_usb_ept_data & 0x00180000) >> 19);
-        printk("  max_len         : %d\n", (r_usb_ept_data & 0x0003f800) >> 11);
-        printk("  ep              : %d\n", (r_usb_ept_data & 0x00000780) >> 7);
-        printk("  dev             : %d\n", (r_usb_ept_data & 0x0000003f));
-}
-
-static inline void __dump_ept_data_list(void)
-{
-        int i;
-
-        printk("Dumping the whole R_USB_EPT_DATA list\n");
-
-        for (i = 0; i < 32; i++) {
-                __dump_ept_data(i);
-        }
-}
-#ifdef USB_DEBUG_DESC
-#define dump_in_desc(...) __dump_in_desc(...)
-#define dump_sb_desc(...) __dump_sb_desc(...)
-#define dump_ep_desc(...) __dump_ep_desc(...)
-#else
-#define dump_in_desc(...) do {} while (0)
-#define dump_sb_desc(...) do {} while (0)
-#define dump_ep_desc(...) do {} while (0)
-#endif
-
-#ifdef USB_DEBUG_URB
-#define dump_urb(x)     __dump_urb(x)
-#else
-#define dump_urb(x)     do {} while (0)
-#endif
-
-static void init_rx_buffers(void)
-{
-        int i;
-
-        DBFENTER;
-
-        for (i = 0; i < (NBR_OF_RX_DESC - 1); i++) {
-                RxDescList[i].sw_len = RX_DESC_BUF_SIZE;
-                RxDescList[i].command = 0;
-                RxDescList[i].next = virt_to_phys(&RxDescList[i + 1]);
-                RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE));
-                RxDescList[i].hw_len = 0;
-                RxDescList[i].status = 0;
-
-                /* DMA IN cache bug. (struct etrax_dma_descr has the same layout as USB_IN_Desc
-                   for the relevant fields.) */
-                prepare_rx_descriptor((struct etrax_dma_descr*)&RxDescList[i]);
-
-        }
-
-        RxDescList[i].sw_len = RX_DESC_BUF_SIZE;
-        RxDescList[i].command = IO_STATE(USB_IN_command, eol, yes);
-        RxDescList[i].next = virt_to_phys(&RxDescList[0]);
-        RxDescList[i].buf = virt_to_phys(RxBuf + (i * RX_DESC_BUF_SIZE));
-        RxDescList[i].hw_len = 0;
-        RxDescList[i].status = 0;
-
-        myNextRxDesc = &RxDescList[0];
-        myLastRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
-        myPrevRxDesc = &RxDescList[NBR_OF_RX_DESC - 1];
-
-        *R_DMA_CH9_FIRST = virt_to_phys(myNextRxDesc);
-        *R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, start);
-
-        DBFEXIT;
-}
-
-static void init_tx_bulk_ep(void)
-{
-        int i;
-
-        DBFENTER;
-
-        for (i = 0; i < (NBR_OF_EPIDS - 1); i++) {
-                CHECK_ALIGN(&TxBulkEPList[i]);
-                TxBulkEPList[i].hw_len = 0;
-                TxBulkEPList[i].command = IO_FIELD(USB_EP_command, epid, i);
-                TxBulkEPList[i].sub = 0;
-                TxBulkEPList[i].next = virt_to_phys(&TxBulkEPList[i + 1]);
-
-                /* Initiate two EPs, disabled and with the eol flag set. No need for any
-                   preserved epid. */
-
-                /* The first one has the intr flag set so we get an interrupt when the DMA
-                   channel is about to become disabled. */
-                CHECK_ALIGN(&TxBulkDummyEPList[i][0]);
-                TxBulkDummyEPList[i][0].hw_len = 0;
-                TxBulkDummyEPList[i][0].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) |
-                                                   IO_STATE(USB_EP_command, eol, yes) |
-                                                   IO_STATE(USB_EP_command, intr, yes));
-                TxBulkDummyEPList[i][0].sub = 0;
-                TxBulkDummyEPList[i][0].next = virt_to_phys(&TxBulkDummyEPList[i][1]);
-
-                /* The second one. */
-                CHECK_ALIGN(&TxBulkDummyEPList[i][1]);
-                TxBulkDummyEPList[i][1].hw_len = 0;
-                TxBulkDummyEPList[i][1].command = (IO_FIELD(USB_EP_command, epid, DUMMY_EPID) |
-                                                   IO_STATE(USB_EP_command, eol, yes));
-                TxBulkDummyEPList[i][1].sub = 0;
-                /* The last dummy's next pointer is the same as the current EP's next pointer. */
-                TxBulkDummyEPList[i][1].next = virt_to_phys(&TxBulkEPList[i + 1]);
-        }
-
-        /* Configure the last one. */
-        CHECK_ALIGN(&TxBulkEPList[i]);
-        TxBulkEPList[i].hw_len = 0;
-        TxBulkEPList[i].command = (IO_STATE(USB_EP_command, eol, yes) |
-                                   IO_FIELD(USB_EP_command, epid, i));
-        TxBulkEPList[i].sub = 0;
-        TxBulkEPList[i].next = virt_to_phys(&TxBulkEPList[0]);
-
-        /* No need configuring dummy EPs for the last one as it will never be used for
-           bulk traffic (i == INVALD_EPID at this point). */
-
-        /* Set up to start on the last EP so we will enable it when inserting traffic
-           for the first time (imitating the situation where the DMA has stopped
-           because there was no more traffic). */
-        *R_DMA_CH8_SUB0_EP = virt_to_phys(&TxBulkEPList[i]);
-        /* No point in starting the bulk channel yet.
-         *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start); */
-        DBFEXIT;
-}
-
-static void init_tx_ctrl_ep(void)
-{
-        int i;
-
-        DBFENTER;
-
-        for (i = 0; i < (NBR_OF_EPIDS - 1); i++) {
-                CHECK_ALIGN(&TxCtrlEPList[i]);
-                TxCtrlEPList[i].hw_len = 0;
-                TxCtrlEPList[i].command = IO_FIELD(USB_EP_command, epid, i);
-                TxCtrlEPList[i].sub = 0;
-                TxCtrlEPList[i].next = virt_to_phys(&TxCtrlEPList[i + 1]);
-        }
-
-        CHECK_ALIGN(&TxCtrlEPList[i]);
-        TxCtrlEPList[i].hw_len = 0;
-        TxCtrlEPList[i].command = (IO_STATE(USB_EP_command, eol, yes) |
-                                   IO_FIELD(USB_EP_command, epid, i));
-
-        TxCtrlEPList[i].sub = 0;
-        TxCtrlEPList[i].next = virt_to_phys(&TxCtrlEPList[0]);
-
-        *R_DMA_CH8_SUB1_EP = virt_to_phys(&TxCtrlEPList[0]);
-        *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB1_CMD, cmd, start);
-
-        DBFEXIT;
-}
-
-
-static void init_tx_intr_ep(void)
-{
-        int i;
-
-        DBFENTER;
-
-        /* Read comment at zout_buffer declaration for an explanation to this. */
-        TxIntrSB_zout.sw_len = 1;
-        TxIntrSB_zout.next = 0;
-        TxIntrSB_zout.buf = virt_to_phys(&zout_buffer[0]);
-        TxIntrSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) |
-                                 IO_STATE(USB_SB_command, tt, zout) |
-                                 IO_STATE(USB_SB_command, full, yes) |
-                                 IO_STATE(USB_SB_command, eot, yes) |
-                                 IO_STATE(USB_SB_command, eol, yes));
-
-        for (i = 0; i < (MAX_INTR_INTERVAL - 1); i++) {
-                CHECK_ALIGN(&TxIntrEPList[i]);
-                TxIntrEPList[i].hw_len = 0;
-                TxIntrEPList[i].command =
-                        (IO_STATE(USB_EP_command, eof, yes) |
-                         IO_STATE(USB_EP_command, enable, yes) |
-                         IO_FIELD(USB_EP_command, epid, INVALID_EPID));
-                TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout);
-                TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[i + 1]);
-        }
-
-        CHECK_ALIGN(&TxIntrEPList[i]);
-        TxIntrEPList[i].hw_len = 0;
-        TxIntrEPList[i].command =
-                (IO_STATE(USB_EP_command, eof, yes) |
-                 IO_STATE(USB_EP_command, eol, yes) |
-                 IO_STATE(USB_EP_command, enable, yes) |
-                 IO_FIELD(USB_EP_command, epid, INVALID_EPID));
-        TxIntrEPList[i].sub = virt_to_phys(&TxIntrSB_zout);
-        TxIntrEPList[i].next = virt_to_phys(&TxIntrEPList[0]);
-
-        *R_DMA_CH8_SUB2_EP = virt_to_phys(&TxIntrEPList[0]);
-        *R_DMA_CH8_SUB2_CMD = IO_STATE(R_DMA_CH8_SUB2_CMD, cmd, start);
-        DBFEXIT;
-}
-
-static void init_tx_isoc_ep(void)
-{
-        int i;
-
-        DBFENTER;
-
-        /* Read comment at zout_buffer declaration for an explanation to this. */
-        TxIsocSB_zout.sw_len = 1;
-        TxIsocSB_zout.next = 0;
-        TxIsocSB_zout.buf = virt_to_phys(&zout_buffer[0]);
-        TxIsocSB_zout.command = (IO_FIELD(USB_SB_command, rem, 0) |
-                                 IO_STATE(USB_SB_command, tt, zout) |
-                                 IO_STATE(USB_SB_command, full, yes) |
-                                 IO_STATE(USB_SB_command, eot, yes) |
-                                 IO_STATE(USB_SB_command, eol, yes));
-
-        /* The last isochronous EP descriptor is a dummy. */
-
-        for (i = 0; i < (NBR_OF_EPIDS - 1); i++) {
-                CHECK_ALIGN(&TxIsocEPList[i]);
-                TxIsocEPList[i].hw_len = 0;
-                TxIsocEPList[i].command = IO_FIELD(USB_EP_command, epid, i);
-                TxIsocEPList[i].sub = 0;
-                TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[i + 1]);
-        }
-
-        CHECK_ALIGN(&TxIsocEPList[i]);
-        TxIsocEPList[i].hw_len = 0;
-
-        /* Must enable the last EP descr to get eof interrupt. */
-        TxIsocEPList[i].command = (IO_STATE(USB_EP_command, enable, yes) |
-                                   IO_STATE(USB_EP_command, eof, yes) |
-                                   IO_STATE(USB_EP_command, eol, yes) |
-                                   IO_FIELD(USB_EP_command, epid, INVALID_EPID));
-        TxIsocEPList[i].sub = virt_to_phys(&TxIsocSB_zout);
-        TxIsocEPList[i].next = virt_to_phys(&TxIsocEPList[0]);
-
-        *R_DMA_CH8_SUB3_EP = virt_to_phys(&TxIsocEPList[0]);
-        *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start);
-
-        DBFEXIT;
-}
-
-static void etrax_usb_unlink_intr_urb(struct urb *urb)
-{
-        volatile USB_EP_Desc_t *first_ep;  /* First EP in the list. */
-        volatile USB_EP_Desc_t *curr_ep;   /* Current EP, the iterator. */
-        volatile USB_EP_Desc_t *next_ep;   /* The EP after current. */
-        volatile USB_EP_Desc_t *unlink_ep; /* The one we should remove from the list. */
-
-        int epid;
-
-        /* Read 8.8.4 in Designer's Reference, "Removing an EP Descriptor from the List". */
-
-        DBFENTER;
-
-        epid = ((etrax_urb_priv_t *)urb->hcpriv)->epid;
-
-        first_ep = &TxIntrEPList[0];
-        curr_ep = first_ep;
-
-
-        /* Note that this loop removes all EP descriptors with this epid. This assumes
-           that all EP descriptors belong to the one and only urb for this epid. */
-
-        do {
-                next_ep = (USB_EP_Desc_t *)phys_to_virt(curr_ep->next);
-
-                if (IO_EXTRACT(USB_EP_command, epid, next_ep->command) == epid) {
-
-                        dbg_intr("Found EP to unlink for epid %d", epid);
-
-                        /* This is the one we should unlink. */
-                        unlink_ep = next_ep;
-
-                        /* Actually unlink the EP from the DMA list. */
-                        curr_ep->next = unlink_ep->next;
-
-                        /* Wait until the DMA is no longer at this descriptor. */
-                        while (*R_DMA_CH8_SUB2_EP == virt_to_phys(unlink_ep));
-
-                        /* Now we are free to remove it and its SB descriptor.
-                           Note that it is assumed here that there is only one sb in the
-                           sb list for this ep. */
-                        kmem_cache_free(usb_desc_cache, phys_to_virt(unlink_ep->sub));
-                        kmem_cache_free(usb_desc_cache, (USB_EP_Desc_t *)unlink_ep);
-                }
-
-                curr_ep = phys_to_virt(curr_ep->next);
-
-        } while (curr_ep != first_ep);
-        urb->hcpriv = NULL;
-}
-
-void etrax_usb_do_intr_recover(int epid)
-{
-        USB_EP_Desc_t *first_ep, *tmp_ep;
-
-        DBFENTER;
-
-        first_ep = (USB_EP_Desc_t *)phys_to_virt(*R_DMA_CH8_SUB2_EP);
-        tmp_ep = first_ep;
-
-        /* What this does is simply to walk the list of interrupt
-           ep descriptors and enable those that are disabled. */
-
-        do {
-                if (IO_EXTRACT(USB_EP_command, epid, tmp_ep->command) == epid &&
-                    !(tmp_ep->command & IO_MASK(USB_EP_command, enable))) {
-                        tmp_ep->command |= IO_STATE(USB_EP_command, enable, yes);
-                }
-
-                tmp_ep = (USB_EP_Desc_t *)phys_to_virt(tmp_ep->next);
-
-        } while (tmp_ep != first_ep);
-
-
-        DBFEXIT;
-}
-
-static int etrax_rh_unlink_urb (struct urb *urb)
-{
-        etrax_hc_t *hc;
-
-        DBFENTER;
-
-        hc = urb->dev->bus->hcpriv;
-
-        if (hc->rh.urb == urb) {
-                hc->rh.send = 0;
-                del_timer(&hc->rh.rh_int_timer);
-        }
-
-        DBFEXIT;
-        return 0;
-}
-
-static void etrax_rh_send_irq(struct urb *urb)
-{
-        __u16 data = 0;
-        etrax_hc_t *hc = urb->dev->bus->hcpriv;
-        DBFENTER;
-
-/*
-  dbg_rh("R_USB_FM_NUMBER   : 0x%08X", *R_USB_FM_NUMBER);
-  dbg_rh("R_USB_FM_REMAINING: 0x%08X", *R_USB_FM_REMAINING);
-*/
-
-        data |= (hc->rh.wPortChange_1) ? (1 << 1) : 0;
-        data |= (hc->rh.wPortChange_2) ? (1 << 2) : 0;
-
-        *((__u16 *)urb->transfer_buffer) = cpu_to_le16(data);
-        /* FIXME: Why is actual_length set to 1 when data is 2 bytes?
-           Since only 1 byte is used, why not declare data as __u8? */
-        urb->actual_length = 1;
-        urb->status = 0;
-
-        if (hc->rh.send && urb->complete) {
-                dbg_rh("wPortChange_1: 0x%04X", hc->rh.wPortChange_1);
-                dbg_rh("wPortChange_2: 0x%04X", hc->rh.wPortChange_2);
-
-                urb->complete(urb, NULL);
-        }
-
-        DBFEXIT;
-}
-
-static void etrax_rh_init_int_timer(struct urb *urb)
-{
-        etrax_hc_t *hc;
-
-        DBFENTER;
-
-        hc = urb->dev->bus->hcpriv;
-        hc->rh.interval = urb->interval;
-        init_timer(&hc->rh.rh_int_timer);
-        hc->rh.rh_int_timer.function = etrax_rh_int_timer_do;
-        hc->rh.rh_int_timer.data = (unsigned long)urb;
-        /* FIXME: Is the jiffies resolution enough? All intervals < 10 ms will be mapped
-           to 0, and the rest to the nearest lower 10 ms. */
-        hc->rh.rh_int_timer.expires = jiffies + ((HZ * hc->rh.interval) / 1000);
-        add_timer(&hc->rh.rh_int_timer);
-
-        DBFEXIT;
-}
-
-static void etrax_rh_int_timer_do(unsigned long ptr)
-{
-        struct urb *urb;
-        etrax_hc_t *hc;
-
-        DBFENTER;
-
-        urb = (struct urb*)ptr;
-        hc = urb->dev->bus->hcpriv;
-
-        if (hc->rh.send) {
-                etrax_rh_send_irq(urb);
-        }
-
-        DBFEXIT;
-}
-
-static int etrax_usb_setup_epid(struct urb *urb)
-{
-        int epid;
-        char devnum, endpoint, out_traffic, slow;
-        int maxlen;
-        unsigned long flags;
-
-        DBFENTER;
-
-        epid = etrax_usb_lookup_epid(urb);
-        if ((epid != -1)){
-                /* An epid that fits this urb has been found. */
-                DBFEXIT;
-                return epid;
-        }
-
-        /* We must find and initiate a new epid for this urb. */
-        epid = etrax_usb_allocate_epid();
-
-        if (epid == -1) {
-                /* Failed to allocate a new epid. */
-                DBFEXIT;
-                return epid;
-        }
-
-        /* We now have a new epid to use. Initiate it. */
-        set_bit(epid, (void *)&epid_usage_bitmask);
-
-        devnum = usb_pipedevice(urb->pipe);
-        endpoint = usb_pipeendpoint(urb->pipe);
-        slow = usb_pipeslow(urb->pipe);
-        maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
-        if (usb_pipetype(urb->pipe) == PIPE_CONTROL) {
-                /* We want both IN and OUT control traffic to be put on the same EP/SB list. */
-                out_traffic = 1;
-        } else {
-                out_traffic = usb_pipeout(urb->pipe);
-        }
-
-        save_flags(flags);
-        cli();
-
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-        nop();
-
-        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-                *R_USB_EPT_DATA_ISO = IO_STATE(R_USB_EPT_DATA_ISO, valid, yes) |
-                        /* FIXME: Change any to the actual port? */
-                        IO_STATE(R_USB_EPT_DATA_ISO, port, any) |
-                        IO_FIELD(R_USB_EPT_DATA_ISO, max_len, maxlen) |
-                        IO_FIELD(R_USB_EPT_DATA_ISO, ep, endpoint) |
-                        IO_FIELD(R_USB_EPT_DATA_ISO, dev, devnum);
-        } else {
-                *R_USB_EPT_DATA = IO_STATE(R_USB_EPT_DATA, valid, yes) |
-                        IO_FIELD(R_USB_EPT_DATA, low_speed, slow) |
-                        /* FIXME: Change any to the actual port? */
-                        IO_STATE(R_USB_EPT_DATA, port, any) |
-                        IO_FIELD(R_USB_EPT_DATA, max_len, maxlen) |
-                        IO_FIELD(R_USB_EPT_DATA, ep, endpoint) |
-                        IO_FIELD(R_USB_EPT_DATA, dev, devnum);
-        }
-
-        restore_flags(flags);
-
-        if (out_traffic) {
-                set_bit(epid, (void *)&epid_out_traffic);
-        } else {
-                clear_bit(epid, (void *)&epid_out_traffic);
-        }
-
-        dbg_epid("Setting up epid %d with devnum %d, endpoint %d and max_len %d (%s)",
-                 epid, devnum, endpoint, maxlen, out_traffic ? "OUT" : "IN");
-
-        DBFEXIT;
-        return epid;
-}
-
-static void etrax_usb_free_epid(int epid)
-{
-        unsigned long flags;
-
-        DBFENTER;
-
-        if (!test_bit(epid, (void *)&epid_usage_bitmask)) {
-                warn("Trying to free unused epid %d", epid);
-                DBFEXIT;
-                return;
-        }
-
-        save_flags(flags);
-        cli();
-
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-        nop();
-        while (*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold));
-        /* This will, among other things, set the valid field to 0. */
-        *R_USB_EPT_DATA = 0;
-        restore_flags(flags);
-
-        clear_bit(epid, (void *)&epid_usage_bitmask);
-
-
-        dbg_epid("Freed epid %d", epid);
-
-        DBFEXIT;
-}
-
-static int etrax_usb_lookup_epid(struct urb *urb)
-{
-        int i;
-        __u32 data;
-        char devnum, endpoint, slow, out_traffic;
-        int maxlen;
-        unsigned long flags;
-
-        DBFENTER;
-
-        devnum = usb_pipedevice(urb->pipe);
-        endpoint = usb_pipeendpoint(urb->pipe);
-        slow = usb_pipeslow(urb->pipe);
-        maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
-        if (usb_pipetype(urb->pipe) == PIPE_CONTROL) {
-                /* We want both IN and OUT control traffic to be put on the same EP/SB list. */
-                out_traffic = 1;
-        } else {
-                out_traffic = usb_pipeout(urb->pipe);
-        }
-
-        /* Step through att epids. */
-        for (i = 0; i < NBR_OF_EPIDS; i++) {
-                if (test_bit(i, (void *)&epid_usage_bitmask) &&
-                    test_bit(i, (void *)&epid_out_traffic) == out_traffic) {
-
-                        save_flags(flags);
-                        cli();
-                        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, i);
-                        nop();
-
-                        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-                                data = *R_USB_EPT_DATA_ISO;
-                                restore_flags(flags);
-
-                                if ((IO_MASK(R_USB_EPT_DATA_ISO, valid) & data) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA_ISO, dev, data) == devnum) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA_ISO, ep, data) == endpoint) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA_ISO, max_len, data) == maxlen)) {
-                                        dbg_epid("Found epid %d for devnum %d, endpoint %d (%s)",
-                                                 i, devnum, endpoint, out_traffic ? "OUT" : "IN");
-                                        DBFEXIT;
-                                        return i;
-                                }
-                        } else {
-                                data = *R_USB_EPT_DATA;
-                                restore_flags(flags);
-
-                                if ((IO_MASK(R_USB_EPT_DATA, valid) & data) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA, dev, data) == devnum) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA, ep, data) == endpoint) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA, low_speed, data) == slow) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA, max_len, data) == maxlen)) {
-                                        dbg_epid("Found epid %d for devnum %d, endpoint %d (%s)",
-                                                 i, devnum, endpoint, out_traffic ? "OUT" : "IN");
-                                        DBFEXIT;
-                                        return i;
-                                }
-                        }
-                }
-        }
-
-        DBFEXIT;
-        return -1;
-}
-
-static int etrax_usb_allocate_epid(void)
-{
-        int i;
-
-        DBFENTER;
-
-        for (i = 0; i < NBR_OF_EPIDS; i++) {
-                if (!test_bit(i, (void *)&epid_usage_bitmask)) {
-                        dbg_epid("Found free epid %d", i);
-                        DBFEXIT;
-                        return i;
-                }
-        }
-
-        dbg_epid("Found no free epids");
-        DBFEXIT;
-        return -1;
-}
-
-static int etrax_usb_submit_urb(struct urb *urb, unsigned mem_flags)
-{
-        etrax_hc_t *hc;
-        int ret = -EINVAL;
-
-        DBFENTER;
-
-        if (!urb->dev || !urb->dev->bus) {
-                return -ENODEV;
-        }
-        if (usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)) <= 0) {
-                info("Submit urb to pipe with maxpacketlen 0, pipe 0x%X\n", urb->pipe);
-                return -EMSGSIZE;
-        }
-
-        if (urb->timeout) {
-                /* FIXME. */
-                warn("urb->timeout specified, ignoring.");
-        }
-
-        hc = (etrax_hc_t*)urb->dev->bus->hcpriv;
-
-        if (usb_pipedevice(urb->pipe) == hc->rh.devnum) {
-                /* This request is for the Virtual Root Hub. */
-                ret = etrax_rh_submit_urb(urb);
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_BULK) {
-
-                ret = etrax_usb_submit_bulk_urb(urb);
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_CONTROL) {
-
-                ret = etrax_usb_submit_ctrl_urb(urb);
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) {
-                int bustime;
-
-                if (urb->bandwidth == 0) {
-                        bustime = usb_check_bandwidth(urb->dev, urb);
-                        if (bustime < 0) {
-                                ret = bustime;
-                        } else {
-                                ret = etrax_usb_submit_intr_urb(urb);
-                                if (ret == 0)
-                                        usb_claim_bandwidth(urb->dev, urb, bustime, 0);
-                        }
-                } else {
-                        /* Bandwidth already set. */
-                        ret = etrax_usb_submit_intr_urb(urb);
-                }
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-                int bustime;
-
-                if (urb->bandwidth == 0) {
-                        bustime = usb_check_bandwidth(urb->dev, urb);
-                        if (bustime < 0) {
-                                ret = bustime;
-                        } else {
-                                ret = etrax_usb_submit_isoc_urb(urb);
-                                if (ret == 0)
-                                        usb_claim_bandwidth(urb->dev, urb, bustime, 0);
-                        }
-                } else {
-                        /* Bandwidth already set. */
-                        ret = etrax_usb_submit_isoc_urb(urb);
-                }
-        }
-
-        DBFEXIT;
-
-        if (ret != 0)
-          printk("Submit URB error %d\n", ret);
-
-        return ret;
-}
-
-static int etrax_usb_unlink_urb(struct urb *urb, int status)
-{
-        etrax_hc_t *hc;
-        etrax_urb_priv_t *urb_priv;
-        int epid;
-        unsigned int flags;
-
-        DBFENTER;
-
-        if (!urb) {
-                return -EINVAL;
-        }
-
-        /* Disable interrupts here since a descriptor interrupt for the isoc epid
-           will modify the sb list.  This could possibly be done more granular, but
-           unlink_urb should not be used frequently anyway.
-        */
-
-        save_flags(flags);
-        cli();
-
-        if (!urb->dev || !urb->dev->bus) {
-                restore_flags(flags);
-                return -ENODEV;
-        }
-        if (!urb->hcpriv) {
-                /* This happens if a device driver calls unlink on an urb that
-                   was never submitted (lazy driver) or if the urb was completed
-                   while unlink was being called. */
-                restore_flags(flags);
-                return 0;
-        }
-        if (urb->transfer_flags & URB_ASYNC_UNLINK) {
-                /* FIXME. */
-                /* If URB_ASYNC_UNLINK is set:
-                   unlink
-                   move to a separate urb list
-                   call complete at next sof with ECONNRESET
-
-                   If not:
-                   wait 1 ms
-                   unlink
-                   call complete with ENOENT
-                */
-                warn("URB_ASYNC_UNLINK set, ignoring.");
-        }
-
-        /* One might think that urb->status = -EINPROGRESS would be a requirement for unlinking,
-           but that doesn't work for interrupt and isochronous traffic since they are completed
-           repeatedly, and urb->status is set then. That may in itself be a bug though. */
-
-        hc = urb->dev->bus->hcpriv;
-        urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-        epid = urb_priv->epid;
-
-        /* Set the urb status (synchronous unlink). */
-        urb->status = -ENOENT;
-        urb_priv->urb_state = UNLINK;
-
-        if (usb_pipedevice(urb->pipe) == hc->rh.devnum) {
-                int ret;
-                ret = etrax_rh_unlink_urb(urb);
-                DBFEXIT;
-                restore_flags(flags);
-                return ret;
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_BULK) {
-
-                dbg_bulk("Unlink of bulk urb (0x%lx)", (unsigned long)urb);
-
-                if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
-                        /* The EP was enabled, disable it and wait. */
-                        TxBulkEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
-
-                        /* Ah, the luxury of busy-wait. */
-                        while (*R_DMA_CH8_SUB0_EP == virt_to_phys(&TxBulkEPList[epid]));
-                }
-                /* Kicking dummy list out of the party. */
-                TxBulkEPList[epid].next = virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]);
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_CONTROL) {
-
-                dbg_ctrl("Unlink of ctrl urb (0x%lx)", (unsigned long)urb);
-
-                if (TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
-                        /* The EP was enabled, disable it and wait. */
-                        TxCtrlEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
-
-                        /* Ah, the luxury of busy-wait. */
-                        while (*R_DMA_CH8_SUB1_EP == virt_to_phys(&TxCtrlEPList[epid]));
-                }
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) {
-
-                dbg_intr("Unlink of intr urb (0x%lx)", (unsigned long)urb);
-
-                /* Separate function because it's a tad more complicated. */
-                etrax_usb_unlink_intr_urb(urb);
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-
-                dbg_isoc("Unlink of isoc urb (0x%lx)", (unsigned long)urb);
-
-                if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
-                        /* The EP was enabled, disable it and wait. */
-                        TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
-
-                        /* Ah, the luxury of busy-wait. */
-                        while (*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid]));
-                }
-        }
-
-        /* Note that we need to remove the urb from the urb list *before* removing its SB
-           descriptors. (This means that the isoc eof handler might get a null urb when we
-           are unlinking the last urb.) */
-
-        if (usb_pipetype(urb->pipe) == PIPE_BULK) {
-
-                urb_list_del(urb, epid);
-                TxBulkEPList[epid].sub = 0;
-                etrax_remove_from_sb_list(urb);
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_CONTROL) {
-
-                urb_list_del(urb, epid);
-                TxCtrlEPList[epid].sub = 0;
-                etrax_remove_from_sb_list(urb);
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) {
-
-                urb_list_del(urb, epid);
-                /* Sanity check (should never happen). */
-                assert(urb_list_empty(epid));
-
-                /* Release allocated bandwidth. */
-                usb_release_bandwidth(urb->dev, urb, 0);
-
-        } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-
-                if (usb_pipeout(urb->pipe)) {
-
-                        USB_SB_Desc_t *iter_sb, *prev_sb, *next_sb;
-
-                        if (__urb_list_entry(urb, epid)) {
-
-                                urb_list_del(urb, epid);
-                                iter_sb = TxIsocEPList[epid].sub ? phys_to_virt(TxIsocEPList[epid].sub) : 0;
-                                prev_sb = 0;
-                                while (iter_sb && (iter_sb != urb_priv->first_sb)) {
-                                        prev_sb = iter_sb;
-                                        iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0;
-                                }
-
-                                if (iter_sb == 0) {
-                                        /* Unlink of the URB currently being transmitted. */
-                                        prev_sb = 0;
-                                        iter_sb = TxIsocEPList[epid].sub ? phys_to_virt(TxIsocEPList[epid].sub) : 0;
-                                }
-
-                                while (iter_sb && (iter_sb != urb_priv->last_sb)) {
-                                        iter_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0;
-                                }
-                                if (iter_sb) {
-                                        next_sb = iter_sb->next ? phys_to_virt(iter_sb->next) : 0;
-                                } else {
-                                        /* This should only happen if the DMA has completed
-                                           processing the SB list for this EP while interrupts
-                                           are disabled. */
-                                        dbg_isoc("Isoc urb not found, already sent?");
-                                        next_sb = 0;
-                                }
-                                if (prev_sb) {
-                                        prev_sb->next = next_sb ? virt_to_phys(next_sb) : 0;
-                                } else {
-                                        TxIsocEPList[epid].sub = next_sb ? virt_to_phys(next_sb) : 0;
-                                }
-
-                                etrax_remove_from_sb_list(urb);
-                                if (urb_list_empty(epid)) {
-                                        TxIsocEPList[epid].sub = 0;
-                                        dbg_isoc("Last isoc out urb epid %d", epid);
-                                } else if (next_sb || prev_sb) {
-                                        dbg_isoc("Re-enable isoc out epid %d", epid);
-
-                                        TxIsocEPList[epid].hw_len = 0;
-                                        TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
-                                } else {
-                                        TxIsocEPList[epid].sub = 0;
-                                        dbg_isoc("URB list non-empty and no SB list, EP disabled");
-                                }
-                        } else {
-                                dbg_isoc("Urb 0x%p not found, completed already?", urb);
-                        }
-                } else {
-
-                        urb_list_del(urb, epid);
-
-                        /* For in traffic there is only one SB descriptor for each EP even
-                           though there may be several urbs (all urbs point at the same SB). */
-                        if (urb_list_empty(epid)) {
-                                /* No more urbs, remove the SB. */
-                                TxIsocEPList[epid].sub = 0;
-                                etrax_remove_from_sb_list(urb);
-                        } else {
-                                TxIsocEPList[epid].hw_len = 0;
-                                TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
-                        }
-                }
-                /* Release allocated bandwidth. */
-                usb_release_bandwidth(urb->dev, urb, 1);
-        }
-        /* Free the epid if urb list is empty. */
-        if (urb_list_empty(epid)) {
-                etrax_usb_free_epid(epid);
-        }
-        restore_flags(flags);
-
-        /* Must be done before calling completion handler. */
-        kfree(urb_priv);
-        urb->hcpriv = 0;
-
-        if (urb->complete) {
-                urb->complete(urb, NULL);
-        }
-
-        DBFEXIT;
-        return 0;
-}
-
-static int etrax_usb_get_frame_number(struct usb_device *usb_dev)
-{
-        DBFENTER;
-        DBFEXIT;
-        return (*R_USB_FM_NUMBER & 0x7ff);
-}
-
-static irqreturn_t etrax_usb_tx_interrupt(int irq, void *vhc)
-{
-        DBFENTER;
-
-        /* This interrupt handler could be used when unlinking EP descriptors. */
-
-        if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub0_descr)) {
-                USB_EP_Desc_t *ep;
-
-                //dbg_bulk("dma8_sub0_descr (BULK) intr.");
-
-                /* It should be safe clearing the interrupt here, since we don't expect to get a new
-                   one until we restart the bulk channel. */
-                *R_DMA_CH8_SUB0_CLR_INTR = IO_STATE(R_DMA_CH8_SUB0_CLR_INTR, clr_descr, do);
-
-                /* Wait while the DMA is running (though we don't expect it to be). */
-                while (*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd));
-
-                /* Advance the DMA to the next EP descriptor. */
-                ep = (USB_EP_Desc_t *)phys_to_virt(*R_DMA_CH8_SUB0_EP);
-
-                //dbg_bulk("descr intr: DMA is at 0x%lx", (unsigned long)ep);
-
-                /* ep->next is already a physical address; no need for a virt_to_phys. */
-                *R_DMA_CH8_SUB0_EP = ep->next;
-
-                /* Start the DMA bulk channel again. */
-                *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start);
-        }
-        if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub1_descr)) {
-                struct urb *urb;
-                int epid;
-                etrax_urb_priv_t *urb_priv;
-                unsigned long int flags;
-
-                dbg_ctrl("dma8_sub1_descr (CTRL) intr.");
-                *R_DMA_CH8_SUB1_CLR_INTR = IO_STATE(R_DMA_CH8_SUB1_CLR_INTR, clr_descr, do);
-
-                /* The complete callback gets called so we cli. */
-                save_flags(flags);
-                cli();
-
-                for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) {
-                        if ((TxCtrlEPList[epid].sub == 0) ||
-                            (epid == DUMMY_EPID) ||
-                            (epid == INVALID_EPID)) {
-                                /* Nothing here to see. */
-                                continue;
-                        }
-
-                        /* Get the first urb (if any). */
-                        urb = urb_list_first(epid);
-
-                        if (urb) {
-
-                                /* Sanity check. */
-                                assert(usb_pipetype(urb->pipe) == PIPE_CONTROL);
-
-                                urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-                                assert(urb_priv);
-
-                                if (urb_priv->urb_state == WAITING_FOR_DESCR_INTR) {
-                                        assert(!(TxCtrlEPList[urb_priv->epid].command & IO_MASK(USB_EP_command, enable)));
-
-                                        etrax_usb_complete_urb(urb, 0);
-                                }
-                        }
-                }
-                restore_flags(flags);
-        }
-        if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub2_descr)) {
-                dbg_intr("dma8_sub2_descr (INTR) intr.");
-                *R_DMA_CH8_SUB2_CLR_INTR = IO_STATE(R_DMA_CH8_SUB2_CLR_INTR, clr_descr, do);
-        }
-        if (*R_IRQ_READ2 & IO_MASK(R_IRQ_READ2, dma8_sub3_descr)) {
-                struct urb *urb;
-                int epid;
-                int epid_done;
-                etrax_urb_priv_t *urb_priv;
-                USB_SB_Desc_t *sb_desc;
-
-                usb_isoc_complete_data_t *comp_data = NULL;
-
-                /* One or more isoc out transfers are done. */
-                dbg_isoc("dma8_sub3_descr (ISOC) intr.");
-
-                /* For each isoc out EP search for the first sb_desc with the intr flag
-                   set.  This descriptor must be the last packet from an URB.  Then
-                   traverse the URB list for the EP until the URB with urb_priv->last_sb
-                   matching the intr-marked sb_desc is found.  All URBs before this have
-                   been sent.
-                */
-
-                for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) {
-                        /* Skip past epids with no SB lists, epids used for in traffic,
-                           and special (dummy, invalid) epids. */
-                        if ((TxIsocEPList[epid].sub == 0) ||
-                            (test_bit(epid, (void *)&epid_out_traffic) == 0) ||
-                            (epid == DUMMY_EPID) ||
-                            (epid == INVALID_EPID)) {
-                                /* Nothing here to see. */
-                                continue;
-                        }
-                        sb_desc = phys_to_virt(TxIsocEPList[epid].sub);
-
-                        /* Find the last descriptor of the currently active URB for this ep.
-                           This is the first descriptor in the sub list marked for a descriptor
-                           interrupt. */
-                        while (sb_desc && !IO_EXTRACT(USB_SB_command, intr, sb_desc->command)) {
-                                sb_desc = sb_desc->next ? phys_to_virt(sb_desc->next) : 0;
-                        }
-                        assert(sb_desc);
-
-                        dbg_isoc("Check epid %d, sub 0x%p, SB 0x%p",
-                                 epid,
-                                 phys_to_virt(TxIsocEPList[epid].sub),
-                                 sb_desc);
-
-                        epid_done = 0;
-
-                        /* Get the first urb (if any). */
-                        urb = urb_list_first(epid);
-                        assert(urb);
-
-                        while (urb && !epid_done) {
-
-                                /* Sanity check. */
-                                assert(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS);
-
-                                if (!usb_pipeout(urb->pipe)) {
-                                        /* descr interrupts are generated only for out pipes. */
-                                        epid_done = 1;
-                                        continue;
-                                }
-
-                                urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-                                assert(urb_priv);
-
-                                if (sb_desc != urb_priv->last_sb) {
-
-                                        /* This urb has been sent. */
-                                        dbg_isoc("out URB 0x%p sent", urb);
-
-                                        urb_priv->urb_state = TRANSFER_DONE;
-
-                                } else if ((sb_desc == urb_priv->last_sb) &&
-                                           !(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) {
-
-                                        assert((sb_desc->command & IO_MASK(USB_SB_command, eol)) == IO_STATE(USB_SB_command, eol, yes));
-                                        assert(sb_desc->next == 0);
-
-                                        dbg_isoc("out URB 0x%p last in list, epid disabled", urb);
-                                        TxIsocEPList[epid].sub = 0;
-                                        TxIsocEPList[epid].hw_len = 0;
-                                        urb_priv->urb_state = TRANSFER_DONE;
-
-                                        epid_done = 1;
-
-                                } else {
-                                        epid_done = 1;
-                                }
-                                if (!epid_done) {
-                                        urb = urb_list_next(urb, epid);
-                                }
-                        }
-
-                }
-
-                *R_DMA_CH8_SUB3_CLR_INTR = IO_STATE(R_DMA_CH8_SUB3_CLR_INTR, clr_descr, do);
-
-                comp_data = (usb_isoc_complete_data_t*)kmem_cache_alloc(isoc_compl_cache, GFP_ATOMIC);
-                assert(comp_data != NULL);
-
-                INIT_WORK(&comp_data->usb_bh, etrax_usb_isoc_descr_interrupt_bottom_half, comp_data);
-                schedule_work(&comp_data->usb_bh);
-        }
-
-        DBFEXIT;
-        return IRQ_HANDLED;
-}
-
-static void etrax_usb_isoc_descr_interrupt_bottom_half(void *data)
-{
-        usb_isoc_complete_data_t *comp_data = (usb_isoc_complete_data_t*)data;
-
-        struct urb *urb;
-        int epid;
-        int epid_done;
-        etrax_urb_priv_t *urb_priv;
-
-        DBFENTER;
-
-        dbg_isoc("dma8_sub3_descr (ISOC) bottom half.");
-
-        for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) {
-                unsigned long flags;
-
-                save_flags(flags);
-                cli();
-
-                epid_done = 0;
-
-                /* The descriptor interrupt handler has marked all transmitted isoch. out
-                   URBs with TRANSFER_DONE.  Now we traverse all epids and for all that
-                   have isoch. out traffic traverse its URB list and complete the
-                   transmitted URB.
-                */
-
-                while (!epid_done) {
-
-                        /* Get the first urb (if any). */
-                        urb = urb_list_first(epid);
-                        if (urb == 0) {
-                                epid_done = 1;
-                                continue;
-                        }
-
-                        if (usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) {
-                                        epid_done = 1;
-                                        continue;
-                        }
-
-                        if (!usb_pipeout(urb->pipe)) {
-                                /* descr interrupts are generated only for out pipes. */
-                                epid_done = 1;
-                                continue;
-                        }
-
-                        dbg_isoc("Check epid %d, SB 0x%p", epid, (char*)TxIsocEPList[epid].sub);
-
-                        urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-                        assert(urb_priv);
-
-                        if (urb_priv->urb_state == TRANSFER_DONE) {
-                                int i;
-                                struct usb_iso_packet_descriptor *packet;
-
-                                /* This urb has been sent. */
-                                dbg_isoc("Completing isoc out URB 0x%p", urb);
-
-                                for (i = 0; i < urb->number_of_packets; i++) {
-                                        packet = &urb->iso_frame_desc[i];
-                                        packet->status = 0;
-                                        packet->actual_length = packet->length;
-                                }
-
-                                etrax_usb_complete_isoc_urb(urb, 0);
-
-                                if (urb_list_empty(epid)) {
-                                        etrax_usb_free_epid(epid);
-                                        epid_done = 1;
-                                }
-                        } else {
-                                epid_done = 1;
-                        }
-                }
-                restore_flags(flags);
-
-        }
-        kmem_cache_free(isoc_compl_cache, comp_data);
-
-        DBFEXIT;
-}
-
-
-
-static irqreturn_t etrax_usb_rx_interrupt(int irq, void *vhc)
-{
-        struct urb *urb;
-        etrax_urb_priv_t *urb_priv;
-        int epid = 0;
-        unsigned long flags;
-
-        /* Isoc diagnostics. */
-        static int curr_fm = 0;
-        static int prev_fm = 0;
-
-        DBFENTER;
-
-        /* Clear this interrupt. */
-        *R_DMA_CH9_CLR_INTR = IO_STATE(R_DMA_CH9_CLR_INTR, clr_eop, do);
-
-        /* Note that this while loop assumes that all packets span only
-           one rx descriptor. */
-
-        /* The reason we cli here is that we call the driver's callback functions. */
-        save_flags(flags);
-        cli();
-
-        while (myNextRxDesc->status & IO_MASK(USB_IN_status, eop)) {
-
-                epid = IO_EXTRACT(USB_IN_status, epid, myNextRxDesc->status);
-                urb = urb_list_first(epid);
-
-                //printk("eop for epid %d, first urb 0x%lx\n", epid, (unsigned long)urb);
-
-                if (!urb) {
-                        err("No urb for epid %d in rx interrupt", epid);
-                        __dump_ept_data(epid);
-                        goto skip_out;
-                }
-
-                /* Note that we cannot indescriminately assert(usb_pipein(urb->pipe)) since
-                   ctrl pipes are not. */
-
-                if (myNextRxDesc->status & IO_MASK(USB_IN_status, error)) {
-                        __u32 r_usb_ept_data;
-                        int no_error = 0;
-
-                        assert(test_bit(epid, (void *)&epid_usage_bitmask));
-
-                        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-                        nop();
-                        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-                                r_usb_ept_data = *R_USB_EPT_DATA_ISO;
-
-                                if ((r_usb_ept_data & IO_MASK(R_USB_EPT_DATA_ISO, valid)) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data) == 0) &&
-                                    (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata))) {
-                                        /* Not an error, just a failure to receive an expected iso
-                                           in packet in this frame.  This is not documented
-                                           in the designers reference.
-                                        */
-                                        no_error++;
-                                } else {
-                                        warn("R_USB_EPT_DATA_ISO for epid %d = 0x%x", epid, r_usb_ept_data);
-                                }
-                        } else {
-                                r_usb_ept_data = *R_USB_EPT_DATA;
-                                warn("R_USB_EPT_DATA for epid %d = 0x%x", epid, r_usb_ept_data);
-                        }
-
-                        if (!no_error){
-                                warn("error in rx desc->status, epid %d, first urb = 0x%lx",
-                                     epid, (unsigned long)urb);
-                                __dump_in_desc(myNextRxDesc);
-
-                                warn("R_USB_STATUS = 0x%x", *R_USB_STATUS);
-
-                                /* Check that ept was disabled when error occurred. */
-                                switch (usb_pipetype(urb->pipe)) {
-                                case PIPE_BULK:
-                                        assert(!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)));
-                                        break;
-                                case PIPE_CONTROL:
-                                        assert(!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)));
-                                        break;
-                                case PIPE_INTERRUPT:
-                                        assert(!(TxIntrEPList[epid].command & IO_MASK(USB_EP_command, enable)));
-                                        break;
-                                case PIPE_ISOCHRONOUS:
-                                        assert(!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)));
-                                        break;
-                                default:
-                                        warn("etrax_usb_rx_interrupt: bad pipetype %d in urb 0x%p",
-                                             usb_pipetype(urb->pipe),
-                                             urb);
-                                }
-                                etrax_usb_complete_urb(urb, -EPROTO);
-                                goto skip_out;
-                        }
-                }
-
-                urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-                assert(urb_priv);
-
-                if ((usb_pipetype(urb->pipe) == PIPE_BULK) ||
-                    (usb_pipetype(urb->pipe) == PIPE_CONTROL) ||
-                    (usb_pipetype(urb->pipe) == PIPE_INTERRUPT)) {
-
-                        if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) {
-                                /* We get nodata for empty data transactions, and the rx descriptor's
-                                   hw_len field is not valid in that case. No data to copy in other
-                                   words. */
-                        } else {
-                                /* Make sure the data fits in the buffer. */
-                                assert(urb_priv->rx_offset + myNextRxDesc->hw_len
-                                       <= urb->transfer_buffer_length);
-
-                                memcpy(urb->transfer_buffer + urb_priv->rx_offset,
-                                       phys_to_virt(myNextRxDesc->buf), myNextRxDesc->hw_len);
-                                urb_priv->rx_offset += myNextRxDesc->hw_len;
-                        }
-
-                        if (myNextRxDesc->status & IO_MASK(USB_IN_status, eot)) {
-                                if ((usb_pipetype(urb->pipe) == PIPE_CONTROL) &&
-                                    ((TxCtrlEPList[urb_priv->epid].command & IO_MASK(USB_EP_command, enable)) ==
-                                     IO_STATE(USB_EP_command, enable, yes))) {
-                                        /* The EP is still enabled, so the OUT packet used to ack
-                                           the in data is probably not processed yet.  If the EP
-                                           sub pointer has not moved beyond urb_priv->last_sb mark
-                                           it for a descriptor interrupt and complete the urb in
-                                           the descriptor interrupt handler.
-                                        */
-                                        USB_SB_Desc_t *sub = TxCtrlEPList[urb_priv->epid].sub ? phys_to_virt(TxCtrlEPList[urb_priv->epid].sub) : 0;
-
-                                        while ((sub != NULL) && (sub != urb_priv->last_sb)) {
-                                                sub = sub->next ? phys_to_virt(sub->next) : 0;
-                                        }
-                                        if (sub != NULL) {
-                                                /* The urb has not been fully processed. */
-                                                urb_priv->urb_state = WAITING_FOR_DESCR_INTR;
-                                        } else {
-                                                warn("(CTRL) epid enabled and urb (0x%p) processed, ep->sub=0x%p", urb, (char*)TxCtrlEPList[urb_priv->epid].sub);
-                                                etrax_usb_complete_urb(urb, 0);
-                                        }
-                                } else {
-                                        etrax_usb_complete_urb(urb, 0);
-                                }
-                        }
-
-                } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-
-                        struct usb_iso_packet_descriptor *packet;
-
-                        if (urb_priv->urb_state == UNLINK) {
-                                info("Ignoring rx data for urb being unlinked.");
-                                goto skip_out;
-                        } else if (urb_priv->urb_state == NOT_STARTED) {
-                                info("What? Got rx data for urb that isn't started?");
-                                goto skip_out;
-                        }
-
-                        packet = &urb->iso_frame_desc[urb_priv->isoc_packet_counter];
-                        packet->status = 0;
-
-                        if (myNextRxDesc->status & IO_MASK(USB_IN_status, nodata)) {
-                                /* We get nodata for empty data transactions, and the rx descriptor's
-                                   hw_len field is not valid in that case. We copy 0 bytes however to
-                                   stay in synch. */
-                                packet->actual_length = 0;
-                        } else {
-                                packet->actual_length = myNextRxDesc->hw_len;
-                                /* Make sure the data fits in the buffer. */
-                                assert(packet->actual_length <= packet->length);
-                                memcpy(urb->transfer_buffer + packet->offset,
-                                       phys_to_virt(myNextRxDesc->buf), packet->actual_length);
-                        }
-
-                        /* Increment the packet counter. */
-                        urb_priv->isoc_packet_counter++;
-
-                        /* Note that we don't care about the eot field in the rx descriptor's status.
-                           It will always be set for isoc traffic. */
-                        if (urb->number_of_packets == urb_priv->isoc_packet_counter) {
-
-                                /* Out-of-synch diagnostics. */
-                                curr_fm = (*R_USB_FM_NUMBER & 0x7ff);
-                                if (((prev_fm + urb_priv->isoc_packet_counter) % (0x7ff + 1)) != curr_fm) {
-                                        /* This test is wrong, if there is more than one isoc
-                                           in endpoint active it will always calculate wrong
-                                           since prev_fm is shared by all endpoints.
-
-                                           FIXME Make this check per URB using urb->start_frame.
-                                        */
-                                        dbg_isoc("Out of synch? Previous frame = %d, current frame = %d",
-                                                 prev_fm, curr_fm);
-
-                                }
-                                prev_fm = curr_fm;
-
-                                /* Complete the urb with status OK. */
-                                etrax_usb_complete_isoc_urb(urb, 0);
-                        }
-                }
-
-        skip_out:
-
-                /* DMA IN cache bug. Flush the DMA IN buffer from the cache. (struct etrax_dma_descr
-                   has the same layout as USB_IN_Desc for the relevant fields.) */
-                prepare_rx_descriptor((struct etrax_dma_descr*)myNextRxDesc);
-
-                myPrevRxDesc = myNextRxDesc;
-                myPrevRxDesc->command |= IO_MASK(USB_IN_command, eol);
-                myLastRxDesc->command &= ~IO_MASK(USB_IN_command, eol);
-                myLastRxDesc = myPrevRxDesc;
-
-                myNextRxDesc->status = 0;
-                myNextRxDesc = phys_to_virt(myNextRxDesc->next);
-        }
-
-        restore_flags(flags);
-
-        DBFEXIT;
-
-        return IRQ_HANDLED;
-}
-
-
-/* This function will unlink the SB descriptors associated with this urb. */
-static int etrax_remove_from_sb_list(struct urb *urb)
-{
-        USB_SB_Desc_t *next_sb, *first_sb, *last_sb;
-        etrax_urb_priv_t *urb_priv;
-        int i = 0;
-
-        DBFENTER;
-
-        urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-        assert(urb_priv);
-
-        /* Just a sanity check. Since we don't fiddle with the DMA list the EP descriptor
-           doesn't really need to be disabled, it's just that we expect it to be. */
-        if (usb_pipetype(urb->pipe) == PIPE_BULK) {
-                assert(!(TxBulkEPList[urb_priv->epid].command & IO_MASK(USB_EP_command, enable)));
-        } else if (usb_pipetype(urb->pipe) == PIPE_CONTROL) {
-                assert(!(TxCtrlEPList[urb_priv->epid].command & IO_MASK(USB_EP_command, enable)));
-        }
-
-        first_sb = urb_priv->first_sb;
-        last_sb = urb_priv->last_sb;
-
-        assert(first_sb);
-        assert(last_sb);
-
-        while (first_sb != last_sb) {
-                next_sb = (USB_SB_Desc_t *)phys_to_virt(first_sb->next);
-                kmem_cache_free(usb_desc_cache, first_sb);
-                first_sb = next_sb;
-                i++;
-        }
-        kmem_cache_free(usb_desc_cache, last_sb);
-        i++;
-        dbg_sb("%d SB descriptors freed", i);
-        /* Compare i with urb->number_of_packets for Isoc traffic.
-           Should be same when calling unlink_urb */
-
-        DBFEXIT;
-
-        return i;
-}
-
-static int etrax_usb_submit_bulk_urb(struct urb *urb)
-{
-        int epid;
-        int empty;
-        unsigned long flags;
-        etrax_urb_priv_t *urb_priv;
-
-        DBFENTER;
-
-        /* Epid allocation, empty check and list add must be protected.
-           Read about this in etrax_usb_submit_ctrl_urb. */
-
-        spin_lock_irqsave(&urb_list_lock, flags);
-        epid = etrax_usb_setup_epid(urb);
-        if (epid == -1) {
-                DBFEXIT;
-                spin_unlock_irqrestore(&urb_list_lock, flags);
-                return -ENOMEM;
-        }
-        empty = urb_list_empty(epid);
-        urb_list_add(urb, epid);
-        spin_unlock_irqrestore(&urb_list_lock, flags);
-
-        dbg_bulk("Adding bulk %s urb 0x%lx to %s list, epid %d",
-                 usb_pipein(urb->pipe) ? "IN" : "OUT", (unsigned long)urb, empty ? "empty" : "", epid);
-
-        /* Mark the urb as being in progress. */
-        urb->status = -EINPROGRESS;
-
-        /* Setup the hcpriv data. */
-        urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
-        assert(urb_priv != NULL);
-        /* This sets rx_offset to 0. */
-        urb_priv->urb_state = NOT_STARTED;
-        urb->hcpriv = urb_priv;
-
-        if (empty) {
-                etrax_usb_add_to_bulk_sb_list(urb, epid);
-        }
-
-        DBFEXIT;
-
-        return 0;
-}
-
-static void etrax_usb_add_to_bulk_sb_list(struct urb *urb, int epid)
-{
-        USB_SB_Desc_t *sb_desc;
-        etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-        unsigned long flags;
-        char maxlen;
-
-        DBFENTER;
-
-        dbg_bulk("etrax_usb_add_to_bulk_sb_list, urb 0x%lx", (unsigned long)urb);
-
-        maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
-
-        sb_desc = kmem_cache_zalloc(usb_desc_cache, SLAB_FLAG);
-        assert(sb_desc != NULL);
-
-
-        if (usb_pipeout(urb->pipe)) {
-
-                dbg_bulk("Grabbing bulk OUT, urb 0x%lx, epid %d", (unsigned long)urb, epid);
-
-                /* This is probably a sanity check of the bulk transaction length
-                   not being larger than 64 kB. */
-                if (urb->transfer_buffer_length > 0xffff) {
-                        panic("urb->transfer_buffer_length > 0xffff");
-                }
-
-                sb_desc->sw_len = urb->transfer_buffer_length;
-
-                /* The rem field is don't care if it's not a full-length transfer, so setting
-                   it shouldn't hurt. Also, rem isn't used for OUT traffic. */
-                sb_desc->command = (IO_FIELD(USB_SB_command, rem, 0) |
-                                    IO_STATE(USB_SB_command, tt, out) |
-                                    IO_STATE(USB_SB_command, eot, yes) |
-                                    IO_STATE(USB_SB_command, eol, yes));
-
-                /* The full field is set to yes, even if we don't actually check that this is
-                   a full-length transfer (i.e., that transfer_buffer_length % maxlen = 0).
-                   Setting full prevents the USB controller from sending an empty packet in
-                   that case.  However, if URB_ZERO_PACKET was set we want that. */
-                if (!(urb->transfer_flags & URB_ZERO_PACKET)) {
-                        sb_desc->command |= IO_STATE(USB_SB_command, full, yes);
-                }
-
-                sb_desc->buf = virt_to_phys(urb->transfer_buffer);
-                sb_desc->next = 0;
-
-        } else if (usb_pipein(urb->pipe)) {
-
-                dbg_bulk("Grabbing bulk IN, urb 0x%lx, epid %d", (unsigned long)urb, epid);
-
-                sb_desc->sw_len = urb->transfer_buffer_length ?
-                        (urb->transfer_buffer_length - 1) / maxlen + 1 : 0;
-
-                /* The rem field is don't care if it's not a full-length transfer, so setting
-                   it shouldn't hurt. */
-                sb_desc->command =
-                        (IO_FIELD(USB_SB_command, rem,
-                                  urb->transfer_buffer_length % maxlen) |
-                         IO_STATE(USB_SB_command, tt, in) |
-                         IO_STATE(USB_SB_command, eot, yes) |
-                         IO_STATE(USB_SB_command, eol, yes));
-
-                sb_desc->buf = 0;
-                sb_desc->next = 0;
-        }
-
-        urb_priv->first_sb = sb_desc;
-        urb_priv->last_sb = sb_desc;
-        urb_priv->epid = epid;
-
-        urb->hcpriv = urb_priv;
-
-        /* Reset toggle bits and reset error count. */
-        save_flags(flags);
-        cli();
-
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-        nop();
-
-        /* FIXME: Is this a special case since the hold field is checked,
-           or should we check hold in a lot of other cases as well? */
-        if (*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)) {
-                panic("Hold was set in %s", __FUNCTION__);
-        }
-
-        /* Reset error counters (regardless of which direction this traffic is). */
-        *R_USB_EPT_DATA &=
-                ~(IO_MASK(R_USB_EPT_DATA, error_count_in) |
-                  IO_MASK(R_USB_EPT_DATA, error_count_out));
-
-        /* Software must preset the toggle bits. */
-        if (usb_pipeout(urb->pipe)) {
-                char toggle =
-                        usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe));
-                *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_out);
-                *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_out, toggle);
-        } else {
-                char toggle =
-                        usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe), usb_pipeout(urb->pipe));
-                *R_USB_EPT_DATA &= ~IO_MASK(R_USB_EPT_DATA, t_in);
-                *R_USB_EPT_DATA |= IO_FIELD(R_USB_EPT_DATA, t_in, toggle);
-        }
-
-        /* Assert that the EP descriptor is disabled. */
-        assert(!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)));
-
-        /* The reason we set the EP's sub pointer directly instead of
-           walking the SB list and linking it last in the list is that we only
-           have one active urb at a time (the rest are queued). */
-
-        /* Note that we cannot have interrupts running when we have set the SB descriptor
-           but the EP is not yet enabled.  If a bulk eot happens for another EP, we will
-           find this EP disabled and with a SB != 0, which will make us think that it's done. */
-        TxBulkEPList[epid].sub = virt_to_phys(sb_desc);
-        TxBulkEPList[epid].hw_len = 0;
-        /* Note that we don't have to fill in the ep_id field since this
-           was done when we allocated the EP descriptors in init_tx_bulk_ep. */
-
-        /* Check if the dummy list is already with us (if several urbs were queued). */
-        if (TxBulkEPList[epid].next != virt_to_phys(&TxBulkDummyEPList[epid][0])) {
-
-                dbg_bulk("Inviting dummy list to the party for urb 0x%lx, epid %d",
-                         (unsigned long)urb, epid);
-
-                /* The last EP in the dummy list already has its next pointer set to
-                   TxBulkEPList[epid].next. */
-
-                /* We don't need to check if the DMA is at this EP or not before changing the
-                   next pointer, since we will do it in one 32-bit write (EP descriptors are
-                   32-bit aligned). */
-                TxBulkEPList[epid].next = virt_to_phys(&TxBulkDummyEPList[epid][0]);
-        }
-        /* Enable the EP descr. */
-        dbg_bulk("Enabling bulk EP for urb 0x%lx, epid %d", (unsigned long)urb, epid);
-        TxBulkEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
-
-        /* Everything is set up, safe to enable interrupts again. */
-        restore_flags(flags);
-
-        /* If the DMA bulk channel isn't running, we need to restart it if it
-           has stopped at the last EP descriptor (DMA stopped because there was
-           no more traffic) or if it has stopped at a dummy EP with the intr flag
-           set (DMA stopped because we were too slow in inserting new traffic). */
-        if (!(*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd))) {
-
-                USB_EP_Desc_t *ep;
-                ep = (USB_EP_Desc_t *)phys_to_virt(*R_DMA_CH8_SUB0_EP);
-                dbg_bulk("DMA channel not running in add");
-                dbg_bulk("DMA is at 0x%lx", (unsigned long)ep);
-
-                if (*R_DMA_CH8_SUB0_EP == virt_to_phys(&TxBulkEPList[NBR_OF_EPIDS - 1]) ||
-                    (ep->command & 0x8) >> 3) {
-                        *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start);
-                        /* Update/restart the bulk start timer since we just started the channel. */
-                        mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL);
-                        /* Update/restart the bulk eot timer since we just inserted traffic. */
-                        mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL);
-                }
-        }
-
-        DBFEXIT;
-}
-
-static void etrax_usb_complete_bulk_urb(struct urb *urb, int status)
-{
-        etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-        int epid = urb_priv->epid;
-        unsigned long flags;
-
-        DBFENTER;
-
-        if (status)
-                warn("Completing bulk urb with status %d.", status);
-
-        dbg_bulk("Completing bulk urb 0x%lx for epid %d", (unsigned long)urb, epid);
-
-        /* Update the urb list. */
-        urb_list_del(urb, epid);
-
-        /* For an IN pipe, we always set the actual length, regardless of whether there was
-           an error or not (which means the device driver can use the data if it wants to). */
-        if (usb_pipein(urb->pipe)) {
-                urb->actual_length = urb_priv->rx_offset;
-        } else {
-                /* Set actual_length for OUT urbs also; the USB mass storage driver seems
-                   to want that. We wouldn't know of any partial writes if there was an error. */
-                if (status == 0) {
-                        urb->actual_length = urb->transfer_buffer_length;
-                } else {
-                        urb->actual_length = 0;
-                }
-        }
-
-        /* FIXME: Is there something of the things below we shouldn't do if there was an error?
-           Like, maybe we shouldn't toggle the toggle bits, or maybe we shouldn't insert more traffic. */
-
-        save_flags(flags);
-        cli();
-
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-        nop();
-
-        /* We need to fiddle with the toggle bits because the hardware doesn't do it for us. */
-        if (usb_pipeout(urb->pipe)) {
-                char toggle =
-                        IO_EXTRACT(R_USB_EPT_DATA, t_out, *R_USB_EPT_DATA);
-                usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-                              usb_pipeout(urb->pipe), toggle);
-        } else {
-                char toggle =
-                        IO_EXTRACT(R_USB_EPT_DATA, t_in, *R_USB_EPT_DATA);
-                usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
-                              usb_pipeout(urb->pipe), toggle);
-        }
-        restore_flags(flags);
-
-        /* Remember to free the SBs. */
-        etrax_remove_from_sb_list(urb);
-        kfree(urb_priv);
-        urb->hcpriv = 0;
-
-        /* If there are any more urb's in the list we'd better start sending */
-        if (!urb_list_empty(epid)) {
-
-                struct urb *new_urb;
-
-                /* Get the first urb. */
-                new_urb = urb_list_first(epid);
-                assert(new_urb);
-
-                dbg_bulk("More bulk for epid %d", epid);
-
-                etrax_usb_add_to_bulk_sb_list(new_urb, epid);
-        }
-
-        urb->status = status;
-
-        /* We let any non-zero status from the layer above have precedence. */
-        if (status == 0) {
-                /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's max length)
-                   is to be treated as an error. */
-                if (urb->transfer_flags & URB_SHORT_NOT_OK) {
-                        if (usb_pipein(urb->pipe) &&
-                            (urb->actual_length !=
-                             usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)))) {
-                                urb->status = -EREMOTEIO;
-                        }
-                }
-        }
-
-        if (urb->complete) {
-                urb->complete(urb, NULL);
-        }
-
-        if (urb_list_empty(epid)) {
-                /* This means that this EP is now free, deconfigure it. */
-                etrax_usb_free_epid(epid);
-
-                /* No more traffic; time to clean up.
-                   Must set sub pointer to 0, since we look at the sub pointer when handling
-                   the bulk eot interrupt. */
-
-                dbg_bulk("No bulk for epid %d", epid);
-
-                TxBulkEPList[epid].sub = 0;
-
-                /* Unlink the dummy list. */
-
-                dbg_bulk("Kicking dummy list out of party for urb 0x%lx, epid %d",
-                         (unsigned long)urb, epid);
-
-                /* No need to wait for the DMA before changing the next pointer.
-                   The modulo NBR_OF_EPIDS isn't actually necessary, since we will never use
-                   the last one (INVALID_EPID) for actual traffic. */
-                TxBulkEPList[epid].next =
-                        virt_to_phys(&TxBulkEPList[(epid + 1) % NBR_OF_EPIDS]);
-        }
-
-        DBFEXIT;
-}
-
-static int etrax_usb_submit_ctrl_urb(struct urb *urb)
-{
-        int epid;
-        int empty;
-        unsigned long flags;
-        etrax_urb_priv_t *urb_priv;
-
-        DBFENTER;
-
-        /* FIXME: Return -ENXIO if there is already a queued urb for this endpoint? */
-
-        /* Epid allocation, empty check and list add must be protected.
-
-           Epid allocation because if we find an existing epid for this endpoint an urb might be
-           completed (emptying the list) before we add the new urb to the list, causing the epid
-           to be de-allocated. We would then start the transfer with an invalid epid -> epid attn.
-
-           Empty check and add because otherwise we might conclude that the list is not empty,
-           after which it becomes empty before we add the new urb to the list, causing us not to
-           insert the new traffic into the SB list. */
-
-        spin_lock_irqsave(&urb_list_lock, flags);
-        epid = etrax_usb_setup_epid(urb);
-        if (epid == -1) {
-                spin_unlock_irqrestore(&urb_list_lock, flags);
-                DBFEXIT;
-                return -ENOMEM;
-        }
-        empty = urb_list_empty(epid);
-        urb_list_add(urb, epid);
-        spin_unlock_irqrestore(&urb_list_lock, flags);
-
-        dbg_ctrl("Adding ctrl urb 0x%lx to %s list, epid %d",
-                 (unsigned long)urb, empty ? "empty" : "", epid);
-
-        /* Mark the urb as being in progress. */
-        urb->status = -EINPROGRESS;
-
-        /* Setup the hcpriv data. */
-        urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
-        assert(urb_priv != NULL);
-        /* This sets rx_offset to 0. */
-        urb_priv->urb_state = NOT_STARTED;
-        urb->hcpriv = urb_priv;
-
-        if (empty) {
-                etrax_usb_add_to_ctrl_sb_list(urb, epid);
-        }
-
-        DBFEXIT;
-
-        return 0;
-}
-
-static void etrax_usb_add_to_ctrl_sb_list(struct urb *urb, int epid)
-{
-        USB_SB_Desc_t *sb_desc_setup;
-        USB_SB_Desc_t *sb_desc_data;
-        USB_SB_Desc_t *sb_desc_status;
-
-        etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-
-        unsigned long flags;
-        char maxlen;
-
-        DBFENTER;
-
-        maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
-
-        sb_desc_setup = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG);
-        assert(sb_desc_setup != NULL);
-        sb_desc_status = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG);
-        assert(sb_desc_status != NULL);
-
-        /* Initialize the mandatory setup SB descriptor (used only in control transfers) */
-        sb_desc_setup->sw_len = 8;
-        sb_desc_setup->command = (IO_FIELD(USB_SB_command, rem, 0) |
-                                  IO_STATE(USB_SB_command, tt, setup) |
-                                  IO_STATE(USB_SB_command, full, yes) |
-                                  IO_STATE(USB_SB_command, eot, yes));
-
-        sb_desc_setup->buf = virt_to_phys(urb->setup_packet);
-
-        if (usb_pipeout(urb->pipe)) {
-                dbg_ctrl("Transfer for epid %d is OUT", epid);
-
-                /* If this Control OUT transfer has an optional data stage we add an OUT token
-                   before the mandatory IN (status) token, hence the reordered SB list */
-
-                sb_desc_setup->next = virt_to_phys(sb_desc_status);
-                if (urb->transfer_buffer) {
-
-                        dbg_ctrl("This OUT transfer has an extra data stage");
-
-                        sb_desc_data = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG);
-                        assert(sb_desc_data != NULL);
-
-                        sb_desc_setup->next = virt_to_phys(sb_desc_data);
-
-                        sb_desc_data->sw_len = urb->transfer_buffer_length;
-                        sb_desc_data->command = (IO_STATE(USB_SB_command, tt, out) |
-                                                 IO_STATE(USB_SB_command, full, yes) |
-                                                 IO_STATE(USB_SB_command, eot, yes));
-                        sb_desc_data->buf = virt_to_phys(urb->transfer_buffer);
-                        sb_desc_data->next = virt_to_phys(sb_desc_status);
-                }
-
-                sb_desc_status->sw_len = 1;
-                sb_desc_status->command = (IO_FIELD(USB_SB_command, rem, 0) |
-                                           IO_STATE(USB_SB_command, tt, in) |
-                                           IO_STATE(USB_SB_command, eot, yes) |
-                                           IO_STATE(USB_SB_command, intr, yes) |
-                                           IO_STATE(USB_SB_command, eol, yes));
-
-                sb_desc_status->buf = 0;
-                sb_desc_status->next = 0;
-
-        } else if (usb_pipein(urb->pipe)) {
-
-                dbg_ctrl("Transfer for epid %d is IN", epid);
-                dbg_ctrl("transfer_buffer_length = %d", urb->transfer_buffer_length);
-                dbg_ctrl("rem is calculated to %d", urb->transfer_buffer_length % maxlen);
-
-                sb_desc_data = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, SLAB_FLAG);
-                assert(sb_desc_data != NULL);
-
-                sb_desc_setup->next = virt_to_phys(sb_desc_data);
-
-                sb_desc_data->sw_len = urb->transfer_buffer_length ?
-                        (urb->transfer_buffer_length - 1) / maxlen + 1 : 0;
-                dbg_ctrl("sw_len got %d", sb_desc_data->sw_len);
-
-                sb_desc_data->command =
-                        (IO_FIELD(USB_SB_command, rem,
-                                  urb->transfer_buffer_length % maxlen) |
-                         IO_STATE(USB_SB_command, tt, in) |
-                         IO_STATE(USB_SB_command, eot, yes));
-
-                sb_desc_data->buf = 0;
-                sb_desc_data->next = virt_to_phys(sb_desc_status);
-
-                /* Read comment at zout_buffer declaration for an explanation to this. */
-                sb_desc_status->sw_len = 1;
-                sb_desc_status->command = (IO_FIELD(USB_SB_command, rem, 0) |
-                                           IO_STATE(USB_SB_command, tt, zout) |
-                                           IO_STATE(USB_SB_command, full, yes) |
-                                           IO_STATE(USB_SB_command, eot, yes) |
-                                           IO_STATE(USB_SB_command, intr, yes) |
-                                           IO_STATE(USB_SB_command, eol, yes));
-
-                sb_desc_status->buf = virt_to_phys(&zout_buffer[0]);
-                sb_desc_status->next = 0;
-        }
-
-        urb_priv->first_sb = sb_desc_setup;
-        urb_priv->last_sb = sb_desc_status;
-        urb_priv->epid = epid;
-
-        urb_priv->urb_state = STARTED;
-
-        /* Reset toggle bits and reset error count, remember to di and ei */
-        /* Warning: it is possible that this locking doesn't work with bottom-halves */
-
-        save_flags(flags);
-        cli();
-
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-        nop();
-        if (*R_USB_EPT_DATA & IO_MASK(R_USB_EPT_DATA, hold)) {
-                panic("Hold was set in %s", __FUNCTION__);
-        }
-
-
-        /* FIXME: Compare with etrax_usb_add_to_bulk_sb_list where the toggle bits
-           are set to a specific value. Why the difference? Read "Transfer and Toggle Bits
-           in Designer's Reference, p. 8 - 11. */
-        *R_USB_EPT_DATA &=
-                ~(IO_MASK(R_USB_EPT_DATA, error_count_in) |
-                  IO_MASK(R_USB_EPT_DATA, error_count_out) |
-                  IO_MASK(R_USB_EPT_DATA, t_in) |
-                  IO_MASK(R_USB_EPT_DATA, t_out));
-
-        /* Since we use the rx interrupt to complete ctrl urbs, we can enable interrupts now
-           (i.e. we don't check the sub pointer on an eot interrupt like we do for bulk traffic). */
-        restore_flags(flags);
-
-        /* Assert that the EP descriptor is disabled. */
-        assert(!(TxCtrlEPList[epid].command & IO_MASK(USB_EP_command, enable)));
-
-        /* Set up and enable the EP descriptor. */
-        TxCtrlEPList[epid].sub = virt_to_phys(sb_desc_setup);
-        TxCtrlEPList[epid].hw_len = 0;
-        TxCtrlEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
-
-        /* We start the DMA sub channel without checking if it's running or not, because:
-           1) If it's already running, issuing the start command is a nop.
-           2) We avoid a test-and-set race condition. */
-        *R_DMA_CH8_SUB1_CMD = IO_STATE(R_DMA_CH8_SUB1_CMD, cmd, start);
-
-        DBFEXIT;
-}
-
-static void etrax_usb_complete_ctrl_urb(struct urb *urb, int status)
-{
-        etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-        int epid = urb_priv->epid;
-
-        DBFENTER;
-
-        if (status)
-                warn("Completing ctrl urb with status %d.", status);
-
-        dbg_ctrl("Completing ctrl epid %d, urb 0x%lx", epid, (unsigned long)urb);
-
-        /* Remove this urb from the list. */
-        urb_list_del(urb, epid);
-
-        /* For an IN pipe, we always set the actual length, regardless of whether there was
-           an error or not (which means the device driver can use the data if it wants to). */
-        if (usb_pipein(urb->pipe)) {
-                urb->actual_length = urb_priv->rx_offset;
-        }
-
-        /* FIXME: Is there something of the things below we shouldn't do if there was an error?
-           Like, maybe we shouldn't insert more traffic. */
-
-        /* Remember to free the SBs. */
-        etrax_remove_from_sb_list(urb);
-        kfree(urb_priv);
-        urb->hcpriv = 0;
-
-        /* If there are any more urbs in the list we'd better start sending. */
-        if (!urb_list_empty(epid)) {
-                struct urb *new_urb;
-
-                /* Get the first urb. */
-                new_urb = urb_list_first(epid);
-                assert(new_urb);
-
-                dbg_ctrl("More ctrl for epid %d, first urb = 0x%lx", epid, (unsigned long)new_urb);
-
-                etrax_usb_add_to_ctrl_sb_list(new_urb, epid);
-        }
-
-        urb->status = status;
-
-        /* We let any non-zero status from the layer above have precedence. */
-        if (status == 0) {
-                /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's max length)
-                   is to be treated as an error. */
-                if (urb->transfer_flags & URB_SHORT_NOT_OK) {
-                        if (usb_pipein(urb->pipe) &&
-                            (urb->actual_length !=
-                             usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe)))) {
-                                urb->status = -EREMOTEIO;
-                        }
-                }
-        }
-
-        if (urb->complete) {
-                urb->complete(urb, NULL);
-        }
-
-        if (urb_list_empty(epid)) {
-                /* No more traffic. Time to clean up. */
-                etrax_usb_free_epid(epid);
-                /* Must set sub pointer to 0. */
-                dbg_ctrl("No ctrl for epid %d", epid);
-                TxCtrlEPList[epid].sub = 0;
-        }
-
-        DBFEXIT;
-}
-
-static int etrax_usb_submit_intr_urb(struct urb *urb)
-{
-
-        int epid;
-
-        DBFENTER;
-
-        if (usb_pipeout(urb->pipe)) {
-                /* Unsupported transfer type.
-                   We don't support interrupt out traffic. (If we do, we can't support
-                   intervals for neither in or out traffic, but are forced to schedule all
-                   interrupt traffic in one frame.) */
-                return -EINVAL;
-        }
-
-        epid = etrax_usb_setup_epid(urb);
-        if (epid == -1) {
-                DBFEXIT;
-                return -ENOMEM;
-        }
-
-        if (!urb_list_empty(epid)) {
-                /* There is already a queued urb for this endpoint. */
-                etrax_usb_free_epid(epid);
-                return -ENXIO;
-        }
-
-        urb->status = -EINPROGRESS;
-
-        dbg_intr("Add intr urb 0x%lx, to list, epid %d", (unsigned long)urb, epid);
-
-        urb_list_add(urb, epid);
-        etrax_usb_add_to_intr_sb_list(urb, epid);
-
-        return 0;
-
-        DBFEXIT;
-}
-
-static void etrax_usb_add_to_intr_sb_list(struct urb *urb, int epid)
-{
-
-        volatile USB_EP_Desc_t *tmp_ep;
-        volatile USB_EP_Desc_t *first_ep;
-
-        char maxlen;
-        int interval;
-        int i;
-
-        etrax_urb_priv_t *urb_priv;
-
-        DBFENTER;
-
-        maxlen = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
-        interval = urb->interval;
-
-        urb_priv = kzalloc(sizeof(etrax_urb_priv_t), KMALLOC_FLAG);
-        assert(urb_priv != NULL);
-        urb->hcpriv = urb_priv;
-
-        first_ep = &TxIntrEPList[0];
-
-        /* Round of the interval to 2^n, it is obvious that this code favours
-           smaller numbers, but that is actually a good thing */
-        /* FIXME: The "rounding error" for larger intervals will be quite
-           large. For in traffic this shouldn't be a problem since it will only
-           mean that we "poll" more often. */
-        for (i = 0; interval; i++) {
-                interval = interval >> 1;
-        }
-        interval = 1 << (i - 1);
-
-        dbg_intr("Interval rounded to %d", interval);
-
-        tmp_ep = first_ep;
-        i = 0;
-        do {
-                if (tmp_ep->command & IO_MASK(USB_EP_command, eof)) {
-                        if ((i % interval) == 0) {
-                                /* Insert the traffic ep after tmp_ep */
-                                USB_EP_Desc_t *ep_desc;
-                                USB_SB_Desc_t *sb_desc;
-
-                                dbg_intr("Inserting EP for epid %d", epid);
-
-                                ep_desc = (USB_EP_Desc_t *)
-                                        kmem_cache_alloc(usb_desc_cache, SLAB_FLAG);
-                                sb_desc = (USB_SB_Desc_t *)
-                                        kmem_cache_alloc(usb_desc_cache, SLAB_FLAG);
-                                assert(ep_desc != NULL);
-                                CHECK_ALIGN(ep_desc);
-                                assert(sb_desc != NULL);
-
-                                ep_desc->sub = virt_to_phys(sb_desc);
-                                ep_desc->hw_len = 0;
-                                ep_desc->command = (IO_FIELD(USB_EP_command, epid, epid) |
-                                                    IO_STATE(USB_EP_command, enable, yes));
-
-
-                                /* Round upwards the number of packets of size maxlen
-                                   that this SB descriptor should receive. */
-                                sb_desc->sw_len = urb->transfer_buffer_length ?
-                                        (urb->transfer_buffer_length - 1) / maxlen + 1 : 0;
-                                sb_desc->next = 0;
-                                sb_desc->buf = 0;
-                                sb_desc->command =
-                                        (IO_FIELD(USB_SB_command, rem, urb->transfer_buffer_length % maxlen) |
-                                         IO_STATE(USB_SB_command, tt, in) |
-                                         IO_STATE(USB_SB_command, eot, yes) |
-                                         IO_STATE(USB_SB_command, eol, yes));
-
-                                ep_desc->next = tmp_ep->next;
-                                tmp_ep->next = virt_to_phys(ep_desc);
-                        }
-                        i++;
-                }
-                tmp_ep = (USB_EP_Desc_t *)phys_to_virt(tmp_ep->next);
-        } while (tmp_ep != first_ep);
-
-
-        /* Note that first_sb/last_sb doesn't apply to interrupt traffic. */
-        urb_priv->epid = epid;
-
-        /* We start the DMA sub channel without checking if it's running or not, because:
-           1) If it's already running, issuing the start command is a nop.
-           2) We avoid a test-and-set race condition. */
-        *R_DMA_CH8_SUB2_CMD = IO_STATE(R_DMA_CH8_SUB2_CMD, cmd, start);
-
-        DBFEXIT;
-}
-
-
-
-static void etrax_usb_complete_intr_urb(struct urb *urb, int status)
-{
-        etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-        int epid = urb_priv->epid;
-
-        DBFENTER;
-
-        if (status)
-                warn("Completing intr urb with status %d.", status);
-
-        dbg_intr("Completing intr epid %d, urb 0x%lx", epid, (unsigned long)urb);
-
-        urb->status = status;
-        urb->actual_length = urb_priv->rx_offset;
-
-        dbg_intr("interrupt urb->actual_length = %d", urb->actual_length);
-
-        /* We let any non-zero status from the layer above have precedence. */
-        if (status == 0) {
-                /* URB_SHORT_NOT_OK means that short reads (shorter than the endpoint's max length)
-                   is to be treated as an error. */
-                if (urb->transfer_flags & URB_SHORT_NOT_OK) {
-                        if (urb->actual_length !=
-                            usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))) {
-                                urb->status = -EREMOTEIO;
-                        }
-                }
-        }
-
-        /* The driver will resubmit the URB so we need to remove it first */
-        etrax_usb_unlink_urb(urb, 0);
-        if (urb->complete) {
-                urb->complete(urb, NULL);
-        }
-
-        DBFEXIT;
-}
-
-
-static int etrax_usb_submit_isoc_urb(struct urb *urb)
-{
-        int epid;
-        unsigned long flags;
-
-        DBFENTER;
-
-        dbg_isoc("Submitting isoc urb = 0x%lx", (unsigned long)urb);
-
-        /* Epid allocation, empty check and list add must be protected.
-           Read about this in etrax_usb_submit_ctrl_urb. */
-
-        spin_lock_irqsave(&urb_list_lock, flags);
-        /* Is there an active epid for this urb ? */
-        epid = etrax_usb_setup_epid(urb);
-        if (epid == -1) {
-                DBFEXIT;
-                spin_unlock_irqrestore(&urb_list_lock, flags);
-                return -ENOMEM;
-        }
-
-        /* Ok, now we got valid endpoint, lets insert some traffic */
-
-        urb->status = -EINPROGRESS;
-
-        /* Find the last urb in the URB_List and add this urb after that one.
-           Also add the traffic, that is do an etrax_usb_add_to_isoc_sb_list.  This
-           is important to make this in "real time" since isochronous traffic is
-           time sensitive. */
-
-        dbg_isoc("Adding isoc urb to (possibly empty) list");
-        urb_list_add(urb, epid);
-        etrax_usb_add_to_isoc_sb_list(urb, epid);
-        spin_unlock_irqrestore(&urb_list_lock, flags);
-
-        DBFEXIT;
-
-        return 0;
-}
-
-static void etrax_usb_check_error_isoc_ep(const int epid)
-{
-        unsigned long int flags;
-        int error_code;
-        __u32 r_usb_ept_data;
-
-        /* We can't read R_USB_EPID_ATTN here since it would clear the iso_eof,
-           bulk_eot and epid_attn interrupts.  So we just check the status of
-           the epid without testing if for it in R_USB_EPID_ATTN. */
-
-
-        save_flags(flags);
-        cli();
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-        nop();
-        /* Note that although there are separate R_USB_EPT_DATA and R_USB_EPT_DATA_ISO
-           registers, they are located at the same address and are of the same size.
-           In other words, this read should be ok for isoc also. */
-        r_usb_ept_data = *R_USB_EPT_DATA;
-        restore_flags(flags);
-
-        error_code = IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data);
-
-        if (r_usb_ept_data & IO_MASK(R_USB_EPT_DATA, hold)) {
-                warn("Hold was set for epid %d.", epid);
-                return;
-        }
-
-        if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA_ISO, error_code, no_error)) {
-
-                /* This indicates that the SB list of the ept was completed before
-                   new data was appended to it.  This is not an error, but indicates
-                   large system or USB load and could possibly cause trouble for
-                   very timing sensitive USB device drivers so we log it.
-                */
-                info("Isoc. epid %d disabled with no error", epid);
-                return;
-
-        } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA_ISO, error_code, stall)) {
-                /* Not really a protocol error, just says that the endpoint gave
-                   a stall response. Note that error_code cannot be stall for isoc. */
-                panic("Isoc traffic cannot stall");
-
-        } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA_ISO, error_code, bus_error)) {
-                /* Two devices responded to a transaction request. Must be resolved
-                   by software. FIXME: Reset ports? */
-                panic("Bus error for epid %d."
-                      " Two devices responded to transaction request",
-                      epid);
-
-        } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, buffer_error)) {
-                /* DMA overrun or underrun. */
-                warn("Buffer overrun/underrun for epid %d. DMA too busy?", epid);
-
-                /* It seems that error_code = buffer_error in
-                   R_USB_EPT_DATA/R_USB_EPT_DATA_ISO and ourun = yes in R_USB_STATUS
-                   are the same error. */
-        }
-}
-
-
-static void etrax_usb_add_to_isoc_sb_list(struct urb *urb, int epid)
-{
-
-        int i = 0;
-
-        etrax_urb_priv_t *urb_priv;
-        USB_SB_Desc_t *prev_sb_desc,  *next_sb_desc, *temp_sb_desc;
-
-        DBFENTER;
-
-        prev_sb_desc = next_sb_desc = temp_sb_desc = NULL;
-
-        urb_priv = kzalloc(sizeof(etrax_urb_priv_t), GFP_ATOMIC);
-        assert(urb_priv != NULL);
-
-        urb->hcpriv = urb_priv;
-        urb_priv->epid = epid;
-
-        if (usb_pipeout(urb->pipe)) {
-
-                if (urb->number_of_packets == 0) panic("etrax_usb_add_to_isoc_sb_list 0 packets\n");
-
-                dbg_isoc("Transfer for epid %d is OUT", epid);
-                dbg_isoc("%d packets in URB", urb->number_of_packets);
-
-                /* Create one SB descriptor for each packet and link them together. */
-                for (i = 0; i < urb->number_of_packets; i++) {
-                        if (!urb->iso_frame_desc[i].length)
-                                continue;
-
-                        next_sb_desc = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, GFP_ATOMIC);
-                        assert(next_sb_desc != NULL);
-
-                        if (urb->iso_frame_desc[i].length > 0) {
-
-                                next_sb_desc->command = (IO_STATE(USB_SB_command, tt, out) |
-                                                         IO_STATE(USB_SB_command, eot, yes));
-
-                                next_sb_desc->sw_len = urb->iso_frame_desc[i].length;
-                                next_sb_desc->buf = virt_to_phys((char*)urb->transfer_buffer + urb->iso_frame_desc[i].offset);
-
-                                /* Check if full length transfer. */
-                                if (urb->iso_frame_desc[i].length ==
-                                    usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe))) {
-                                        next_sb_desc->command |= IO_STATE(USB_SB_command, full, yes);
-                                }
-                        } else {
-                                dbg_isoc("zero len packet");
-                                next_sb_desc->command = (IO_FIELD(USB_SB_command, rem, 0) |
-                                                         IO_STATE(USB_SB_command, tt, zout) |
-                                                         IO_STATE(USB_SB_command, eot, yes) |
-                                                         IO_STATE(USB_SB_command, full, yes));
-
-                                next_sb_desc->sw_len = 1;
-                                next_sb_desc->buf = virt_to_phys(&zout_buffer[0]);
-                        }
-
-                        /* First SB descriptor that belongs to this urb */
-                        if (i == 0)
-                                urb_priv->first_sb = next_sb_desc;
-                        else
-                                prev_sb_desc->next = virt_to_phys(next_sb_desc);
-
-                        prev_sb_desc = next_sb_desc;
-                }
-
-                next_sb_desc->command |= (IO_STATE(USB_SB_command, intr, yes) |
-                                          IO_STATE(USB_SB_command, eol, yes));
-                next_sb_desc->next = 0;
-                urb_priv->last_sb = next_sb_desc;
-
-        } else if (usb_pipein(urb->pipe)) {
-
-                dbg_isoc("Transfer for epid %d is IN", epid);
-                dbg_isoc("transfer_buffer_length = %d", urb->transfer_buffer_length);
-                dbg_isoc("rem is calculated to %d", urb->iso_frame_desc[urb->number_of_packets - 1].length);
-
-                /* Note that in descriptors for periodic traffic are not consumed. This means that
-                   the USB controller never propagates in the SB list. In other words, if there already
-                   is an SB descriptor in the list for this EP we don't have to do anything. */
-                if (TxIsocEPList[epid].sub == 0) {
-                        dbg_isoc("Isoc traffic not already running, allocating SB");
-
-                        next_sb_desc = (USB_SB_Desc_t*)kmem_cache_alloc(usb_desc_cache, GFP_ATOMIC);
-                        assert(next_sb_desc != NULL);
-
-                        next_sb_desc->command = (IO_STATE(USB_SB_command, tt, in) |
-                                                 IO_STATE(USB_SB_command, eot, yes) |
-                                                 IO_STATE(USB_SB_command, eol, yes));
-
-                        next_sb_desc->next = 0;
-                        next_sb_desc->sw_len = 1; /* Actual number of packets is not relevant
-                                                     for periodic in traffic as long as it is more
-                                                     than zero.  Set to 1 always. */
-                        next_sb_desc->buf = 0;
-
-                        /* The rem field is don't care for isoc traffic, so we don't set it. */
-
-                        /* Only one SB descriptor that belongs to this urb. */
-                        urb_priv->first_sb = next_sb_desc;
-                        urb_priv->last_sb = next_sb_desc;
-
-                } else {
-
-                        dbg_isoc("Isoc traffic already running, just setting first/last_sb");
-
-                        /* Each EP for isoc in will have only one SB descriptor, setup when submitting the
-                           already active urb. Note that even though we may have several first_sb/last_sb
-                           pointing at the same SB descriptor, they are freed only once (when the list has
-                           become empty). */
-                        urb_priv->first_sb = phys_to_virt(TxIsocEPList[epid].sub);
-                        urb_priv->last_sb = phys_to_virt(TxIsocEPList[epid].sub);
-                        return;
-                }
-
-        }
-
-        /* Find the spot to insert this urb and add it. */
-        if (TxIsocEPList[epid].sub == 0) {
-                /* First SB descriptor inserted in this list (in or out). */
-                dbg_isoc("Inserting SB desc first in list");
-                TxIsocEPList[epid].hw_len = 0;
-                TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb);
-
-        } else {
-                /* Isochronous traffic is already running, insert new traffic last (only out). */
-                dbg_isoc("Inserting SB desc last in list");
-                temp_sb_desc = phys_to_virt(TxIsocEPList[epid].sub);
-                while ((temp_sb_desc->command & IO_MASK(USB_SB_command, eol)) !=
-                       IO_STATE(USB_SB_command, eol, yes)) {
-                        assert(temp_sb_desc->next);
-                        temp_sb_desc = phys_to_virt(temp_sb_desc->next);
-                }
-                dbg_isoc("Appending list on desc 0x%p", temp_sb_desc);
-
-                /* Next pointer must be set before eol is removed. */
-                temp_sb_desc->next = virt_to_phys(urb_priv->first_sb);
-                /* Clear the previous end of list flag since there is a new in the
-                   added SB descriptor list. */
-                temp_sb_desc->command &= ~IO_MASK(USB_SB_command, eol);
-
-                if (!(TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable))) {
-                        /* 8.8.5 in Designer's Reference says we should check for and correct
-                           any errors in the EP here.  That should not be necessary if epid_attn
-                           is handled correctly, so we assume all is ok. */
-                        dbg_isoc("EP disabled");
-                        etrax_usb_check_error_isoc_ep(epid);
-
-                        /* The SB list was exhausted. */
-                        if (virt_to_phys(urb_priv->last_sb) != TxIsocEPList[epid].sub) {
-                                /* The new sublist did not get processed before the EP was
-                                   disabled.  Setup the EP again. */
-                                dbg_isoc("Set EP sub to new list");
-                                TxIsocEPList[epid].hw_len = 0;
-                                TxIsocEPList[epid].sub = virt_to_phys(urb_priv->first_sb);
-                        }
-                }
-        }
-
-        if (urb->transfer_flags & URB_ISO_ASAP) {
-                /* The isoc transfer should be started as soon as possible. The start_frame
-                   field is a return value if URB_ISO_ASAP was set. Comparing R_USB_FM_NUMBER
-                   with a USB Chief trace shows that the first isoc IN token is sent 2 frames
-                   later. I'm not sure how this affects usage of the start_frame field by the
-                   device driver, or how it affects things when USB_ISO_ASAP is not set, so
-                   therefore there's no compensation for the 2 frame "lag" here. */
-                urb->start_frame = (*R_USB_FM_NUMBER & 0x7ff);
-                TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
-                urb_priv->urb_state = STARTED;
-                dbg_isoc("URB_ISO_ASAP set, urb->start_frame set to %d", urb->start_frame);
-        } else {
-                /* Not started yet. */
-                urb_priv->urb_state = NOT_STARTED;
-                dbg_isoc("urb_priv->urb_state set to NOT_STARTED");
-        }
-
-       /* We start the DMA sub channel without checking if it's running or not, because:
-          1) If it's already running, issuing the start command is a nop.
-          2) We avoid a test-and-set race condition. */
-        *R_DMA_CH8_SUB3_CMD = IO_STATE(R_DMA_CH8_SUB3_CMD, cmd, start);
-
-        DBFEXIT;
-}
-
-static void etrax_usb_complete_isoc_urb(struct urb *urb, int status)
-{
-        etrax_urb_priv_t *urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-        int epid = urb_priv->epid;
-        int auto_resubmit = 0;
-
-        DBFENTER;
-        dbg_isoc("complete urb 0x%p, status %d", urb, status);
-
-        if (status)
-                warn("Completing isoc urb with status %d.", status);
-
-        if (usb_pipein(urb->pipe)) {
-                int i;
-
-                /* Make that all isoc packets have status and length set before
-                   completing the urb. */
-                for (i = urb_priv->isoc_packet_counter; i < urb->number_of_packets; i++) {
-                        urb->iso_frame_desc[i].actual_length = 0;
-                        urb->iso_frame_desc[i].status = -EPROTO;
-                }
-
-                urb_list_del(urb, epid);
-
-                if (!list_empty(&urb_list[epid])) {
-                        ((etrax_urb_priv_t *)(urb_list_first(epid)->hcpriv))->urb_state = STARTED;
-                } else {
-                        unsigned long int flags;
-                        if (TxIsocEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
-                                /* The EP was enabled, disable it and wait. */
-                                TxIsocEPList[epid].command &= ~IO_MASK(USB_EP_command, enable);
-
-                                /* Ah, the luxury of busy-wait. */
-                                while (*R_DMA_CH8_SUB3_EP == virt_to_phys(&TxIsocEPList[epid]));
-                        }
-
-                        etrax_remove_from_sb_list(urb);
-                        TxIsocEPList[epid].sub = 0;
-                        TxIsocEPList[epid].hw_len = 0;
-
-                        save_flags(flags);
-                        cli();
-                        etrax_usb_free_epid(epid);
-                        restore_flags(flags);
-                }
-
-                urb->hcpriv = 0;
-                kfree(urb_priv);
-
-                /* Release allocated bandwidth. */
-                usb_release_bandwidth(urb->dev, urb, 0);
-        } else if (usb_pipeout(urb->pipe)) {
-                int freed_descr;
-
-                dbg_isoc("Isoc out urb complete 0x%p", urb);
-
-                /* Update the urb list. */
-                urb_list_del(urb, epid);
-
-                freed_descr = etrax_remove_from_sb_list(urb);
-                dbg_isoc("freed %d descriptors of %d packets", freed_descr, urb->number_of_packets);
-                assert(freed_descr == urb->number_of_packets);
-                urb->hcpriv = 0;
-                kfree(urb_priv);
-
-                /* Release allocated bandwidth. */
-                usb_release_bandwidth(urb->dev, urb, 0);
-        }
-
-        urb->status = status;
-        if (urb->complete) {
-                urb->complete(urb, NULL);
-        }
-
-        if (auto_resubmit) {
-                /* Check that urb was not unlinked by the complete callback. */
-                if (__urb_list_entry(urb, epid)) {
-                        /* Move this one down the list. */
-                        urb_list_move_last(urb, epid);
-
-                        /* Mark the now first urb as started (may already be). */
-                        ((etrax_urb_priv_t *)(urb_list_first(epid)->hcpriv))->urb_state = STARTED;
-
-                        /* Must set this to 0 since this urb is still active after
-                           completion. */
-                        urb_priv->isoc_packet_counter = 0;
-                } else {
-                        warn("(ISOC) automatic resubmit urb 0x%p removed by complete.", urb);
-                }
-        }
-
-        DBFEXIT;
-}
-
-static void etrax_usb_complete_urb(struct urb *urb, int status)
-{
-        switch (usb_pipetype(urb->pipe)) {
-        case PIPE_BULK:
-                etrax_usb_complete_bulk_urb(urb, status);
-                break;
-        case PIPE_CONTROL:
-                etrax_usb_complete_ctrl_urb(urb, status);
-                break;
-        case PIPE_INTERRUPT:
-                etrax_usb_complete_intr_urb(urb, status);
-                break;
-        case PIPE_ISOCHRONOUS:
-                etrax_usb_complete_isoc_urb(urb, status);
-                break;
-        default:
-                err("Unknown pipetype");
-        }
-}
-
-
-
-static irqreturn_t etrax_usb_hc_interrupt_top_half(int irq, void *vhc)
-{
-        usb_interrupt_registers_t *reg;
-        unsigned long flags;
-        __u32 irq_mask;
-        __u8 status;
-        __u32 epid_attn;
-        __u16 port_status_1;
-        __u16 port_status_2;
-        __u32 fm_number;
-
-        DBFENTER;
-
-        /* Read critical registers into local variables, do kmalloc afterwards. */
-        save_flags(flags);
-        cli();
-
-        irq_mask = *R_USB_IRQ_MASK_READ;
-        /* Reading R_USB_STATUS clears the ctl_status interrupt. Note that R_USB_STATUS
-           must be read before R_USB_EPID_ATTN since reading the latter clears the
-           ourun and perror fields of R_USB_STATUS. */
-        status = *R_USB_STATUS;
-
-        /* Reading R_USB_EPID_ATTN clears the iso_eof, bulk_eot and epid_attn interrupts. */
-        epid_attn = *R_USB_EPID_ATTN;
-
-        /* Reading R_USB_RH_PORT_STATUS_1 and R_USB_RH_PORT_STATUS_2 clears the
-           port_status interrupt. */
-        port_status_1 = *R_USB_RH_PORT_STATUS_1;
-        port_status_2 = *R_USB_RH_PORT_STATUS_2;
-
-        /* Reading R_USB_FM_NUMBER clears the sof interrupt. */
-        /* Note: the lower 11 bits contain the actual frame number, sent with each sof. */
-        fm_number = *R_USB_FM_NUMBER;
-
-        restore_flags(flags);
-
-        reg = (usb_interrupt_registers_t *)kmem_cache_alloc(top_half_reg_cache, GFP_ATOMIC);
-
-        assert(reg != NULL);
-
-        reg->hc = (etrax_hc_t *)vhc;
-
-        /* Now put register values into kmalloc'd area. */
-        reg->r_usb_irq_mask_read = irq_mask;
-        reg->r_usb_status = status;
-        reg->r_usb_epid_attn = epid_attn;
-        reg->r_usb_rh_port_status_1 = port_status_1;
-        reg->r_usb_rh_port_status_2 = port_status_2;
-        reg->r_usb_fm_number = fm_number;
-
-        INIT_WORK(&reg->usb_bh, etrax_usb_hc_interrupt_bottom_half, reg);
-        schedule_work(&reg->usb_bh);
-
-        DBFEXIT;
-
-        return IRQ_HANDLED;
-}
-
-static void etrax_usb_hc_interrupt_bottom_half(void *data)
-{
-        usb_interrupt_registers_t *reg = (usb_interrupt_registers_t *)data;
-        __u32 irq_mask = reg->r_usb_irq_mask_read;
-
-        DBFENTER;
-
-        /* Interrupts are handled in order of priority. */
-        if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, epid_attn)) {
-                etrax_usb_hc_epid_attn_interrupt(reg);
-        }
-        if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, port_status)) {
-                etrax_usb_hc_port_status_interrupt(reg);
-        }
-        if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, ctl_status)) {
-                etrax_usb_hc_ctl_status_interrupt(reg);
-        }
-        if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, iso_eof)) {
-                etrax_usb_hc_isoc_eof_interrupt();
-        }
-        if (irq_mask & IO_MASK(R_USB_IRQ_MASK_READ, bulk_eot)) {
-                /* Update/restart the bulk start timer since obviously the channel is running. */
-                mod_timer(&bulk_start_timer, jiffies + BULK_START_TIMER_INTERVAL);
-                /* Update/restart the bulk eot timer since we just received an bulk eot interrupt. */
-                mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL);
-
-                etrax_usb_hc_bulk_eot_interrupt(0);
-        }
-
-        kmem_cache_free(top_half_reg_cache, reg);
-
-        DBFEXIT;
-}
-
-
-void etrax_usb_hc_isoc_eof_interrupt(void)
-{
-        struct urb *urb;
-        etrax_urb_priv_t *urb_priv;
-        int epid;
-        unsigned long flags;
-
-        DBFENTER;
-
-        /* Do not check the invalid epid (it has a valid sub pointer). */
-        for (epid = 0; epid < NBR_OF_EPIDS - 1; epid++) {
-
-                /* Do not check the invalid epid (it has a valid sub pointer). */
-                if ((epid == DUMMY_EPID) || (epid == INVALID_EPID))
-                        continue;
-
-                /* Disable interrupts to block the isoc out descriptor interrupt handler
-                   from being called while the isoc EPID list is being checked.
-                */
-                save_flags(flags);
-                cli();
-
-                if (TxIsocEPList[epid].sub == 0) {
-                        /* Nothing here to see. */
-                        restore_flags(flags);
-                        continue;
-                }
-
-                /* Get the first urb (if any). */
-                urb = urb_list_first(epid);
-                if (urb == 0) {
-                        warn("Ignoring NULL urb");
-                        restore_flags(flags);
-                        continue;
-                }
-                if (usb_pipein(urb->pipe)) {
-
-                        /* Sanity check. */
-                        assert(usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS);
-
-                        urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-                        assert(urb_priv);
-
-                        if (urb_priv->urb_state == NOT_STARTED) {
-
-                                /* If ASAP is not set and urb->start_frame is the current frame,
-                                   start the transfer. */
-                                if (!(urb->transfer_flags & URB_ISO_ASAP) &&
-                                    (urb->start_frame == (*R_USB_FM_NUMBER & 0x7ff))) {
-
-                                        dbg_isoc("Enabling isoc IN EP descr for epid %d", epid);
-                                        TxIsocEPList[epid].command |= IO_STATE(USB_EP_command, enable, yes);
-
-                                        /* This urb is now active. */
-                                        urb_priv->urb_state = STARTED;
-                                        continue;
-                                }
-                        }
-                }
-                restore_flags(flags);
-        }
-
-        DBFEXIT;
-
-}
-
-void etrax_usb_hc_bulk_eot_interrupt(int timer_induced)
-{
-        int epid;
-
-        /* The technique is to run one urb at a time, wait for the eot interrupt at which
-           point the EP descriptor has been disabled. */
-
-        DBFENTER;
-        dbg_bulk("bulk eot%s", timer_induced ? ", called by timer" : "");
-
-        for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
-
-                if (!(TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) &&
-                    (TxBulkEPList[epid].sub != 0)) {
-
-                        struct urb *urb;
-                        etrax_urb_priv_t *urb_priv;
-                        unsigned long flags;
-                        __u32 r_usb_ept_data;
-
-                        /* Found a disabled EP descriptor which has a non-null sub pointer.
-                           Verify that this ctrl EP descriptor got disabled no errors.
-                           FIXME: Necessary to check error_code? */
-                        dbg_bulk("for epid %d?", epid);
-
-                        /* Get the first urb. */
-                        urb = urb_list_first(epid);
-
-                        /* FIXME: Could this happen for valid reasons? Why did it disappear? Because of
-                           wrong unlinking? */
-                        if (!urb) {
-                                warn("NULL urb for epid %d", epid);
-                                continue;
-                        }
-
-                        assert(urb);
-                        urb_priv = (etrax_urb_priv_t *)urb->hcpriv;
-                        assert(urb_priv);
-
-                        /* Sanity checks. */
-                        assert(usb_pipetype(urb->pipe) == PIPE_BULK);
-                        if (phys_to_virt(TxBulkEPList[epid].sub) != urb_priv->last_sb) {
-                                err("bulk endpoint got disabled before reaching last sb");
-                        }
-
-                        /* For bulk IN traffic, there seems to be a race condition between
-                           between the bulk eot and eop interrupts, or rather an uncertainty regarding
-                           the order in which they happen. Normally we expect the eop interrupt from
-                           DMA channel 9 to happen before the eot interrupt.
-
-                           Therefore, we complete the bulk IN urb in the rx interrupt handler instead. */
-
-                        if (usb_pipein(urb->pipe)) {
-                                dbg_bulk("in urb, continuing");
-                                continue;
-                        }
-
-                        save_flags(flags);
-                        cli();
-                        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-                        nop();
-                        r_usb_ept_data = *R_USB_EPT_DATA;
-                        restore_flags(flags);
-
-                        if (IO_EXTRACT(R_USB_EPT_DATA, error_code, r_usb_ept_data) ==
-                            IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) {
-                                /* This means that the endpoint has no error, is disabled
-                                   and had inserted traffic, i.e. transfer successfully completed. */
-                                etrax_usb_complete_bulk_urb(urb, 0);
-                        } else {
-                                /* Shouldn't happen. We expect errors to be caught by epid attention. */
-                                err("Found disabled bulk EP desc, error_code != no_error");
-                        }
-                }
-        }
-
-        /* Normally, we should find (at least) one disabled EP descriptor with a valid sub pointer.
-           However, because of the uncertainty in the deliverance of the eop/eot interrupts, we may
-           not.  Also, we might find two disabled EPs when handling an eot interrupt, and then find
-           none the next time. */
-
-        DBFEXIT;
-
-}
-
-void etrax_usb_hc_epid_attn_interrupt(usb_interrupt_registers_t *reg)
-{
-        /* This function handles the epid attention interrupt.  There are a variety of reasons
-           for this interrupt to happen (Designer's Reference, p. 8 - 22 for the details):
-
-           invalid ep_id  - Invalid epid in an EP (EP disabled).
-           stall          - Not strictly an error condition (EP disabled).
-           3rd error      - Three successive transaction errors  (EP disabled).
-           buffer ourun   - Buffer overrun or underrun (EP disabled).
-           past eof1      - Intr or isoc transaction proceeds past EOF1.
-           near eof       - Intr or isoc transaction would not fit inside the frame.
-           zout transfer  - If zout transfer for a bulk endpoint (EP disabled).
-           setup transfer - If setup transfer for a non-ctrl endpoint (EP disabled). */
-
-        int epid;
-
-
-        DBFENTER;
-
-        assert(reg != NULL);
-
-        /* Note that we loop through all epids. We still want to catch errors for
-           the invalid one, even though we might handle them differently. */
-        for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
-
-                if (test_bit(epid, (void *)&reg->r_usb_epid_attn)) {
-
-                        struct urb *urb;
-                        __u32 r_usb_ept_data;
-                        unsigned long flags;
-                        int error_code;
-
-                        save_flags(flags);
-                        cli();
-                        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, epid);
-                        nop();
-                        /* Note that although there are separate R_USB_EPT_DATA and R_USB_EPT_DATA_ISO
-                           registers, they are located at the same address and are of the same size.
-                           In other words, this read should be ok for isoc also. */
-                        r_usb_ept_data = *R_USB_EPT_DATA;
-                        restore_flags(flags);
-
-                        /* First some sanity checks. */
-                        if (epid == INVALID_EPID) {
-                                /* FIXME: What if it became disabled? Could seriously hurt interrupt
-                                   traffic. (Use do_intr_recover.) */
-                                warn("Got epid_attn for INVALID_EPID (%d).", epid);
-                                err("R_USB_EPT_DATA = 0x%x", r_usb_ept_data);
-                                err("R_USB_STATUS = 0x%x", reg->r_usb_status);
-                                continue;
-                        } else  if (epid == DUMMY_EPID) {
-                                /* We definitely don't care about these ones. Besides, they are
-                                   always disabled, so any possible disabling caused by the
-                                   epid attention interrupt is irrelevant. */
-                                warn("Got epid_attn for DUMMY_EPID (%d).", epid);
-                                continue;
-                        }
-
-                        /* Get the first urb in the urb list for this epid. We blatantly assume
-                           that only the first urb could have caused the epid attention.
-                           (For bulk and ctrl, only one urb is active at any one time. For intr
-                           and isoc we remove them once they are completed.) */
-                        urb = urb_list_first(epid);
-
-                        if (urb == NULL) {
-                                err("Got epid_attn for epid %i with no urb.", epid);
-                                err("R_USB_EPT_DATA = 0x%x", r_usb_ept_data);
-                                err("R_USB_STATUS = 0x%x", reg->r_usb_status);
-                                continue;
-                        }
-
-                        switch (usb_pipetype(urb->pipe)) {
-                        case PIPE_BULK:
-                                warn("Got epid attn for bulk endpoint, epid %d", epid);
-                                break;
-                        case PIPE_CONTROL:
-                                warn("Got epid attn for control endpoint, epid %d", epid);
-                                break;
-                        case PIPE_INTERRUPT:
-                                warn("Got epid attn for interrupt endpoint, epid %d", epid);
-                                break;
-                        case PIPE_ISOCHRONOUS:
-                                warn("Got epid attn for isochronous endpoint, epid %d", epid);
-                                break;
-                        }
-
-                        if (usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) {
-                                if (r_usb_ept_data & IO_MASK(R_USB_EPT_DATA, hold)) {
-                                        warn("Hold was set for epid %d.", epid);
-                                        continue;
-                                }
-                        }
-
-                        /* Even though error_code occupies bits 22 - 23 in both R_USB_EPT_DATA and
-                           R_USB_EPT_DATA_ISOC, we separate them here so we don't forget in other places. */
-                        if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-                                error_code = IO_EXTRACT(R_USB_EPT_DATA_ISO, error_code, r_usb_ept_data);
-                        } else {
-                                error_code = IO_EXTRACT(R_USB_EPT_DATA, error_code, r_usb_ept_data);
-                        }
-
-                        /* Using IO_STATE_VALUE on R_USB_EPT_DATA should be ok for isoc also. */
-                        if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, no_error)) {
-
-                                /* Isoc traffic doesn't have error_count_in/error_count_out. */
-                                if ((usb_pipetype(urb->pipe) != PIPE_ISOCHRONOUS) &&
-                                    (IO_EXTRACT(R_USB_EPT_DATA, error_count_in, r_usb_ept_data) == 3 ||
-                                     IO_EXTRACT(R_USB_EPT_DATA, error_count_out, r_usb_ept_data) == 3)) {
-                                        /* 3rd error. */
-                                        warn("3rd error for epid %i", epid);
-                                        etrax_usb_complete_urb(urb, -EPROTO);
-
-                                } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) {
-
-                                        warn("Perror for epid %d", epid);
-
-                                        if (!(r_usb_ept_data & IO_MASK(R_USB_EPT_DATA, valid))) {
-                                                /* invalid ep_id */
-                                                panic("Perror because of invalid epid."
-                                                      " Deconfigured too early?");
-                                        } else {
-                                                /* past eof1, near eof, zout transfer, setup transfer */
-
-                                                /* Dump the urb and the relevant EP descriptor list. */
-
-                                                __dump_urb(urb);
-                                                __dump_ept_data(epid);
-                                                __dump_ep_list(usb_pipetype(urb->pipe));
-
-                                                panic("Something wrong with DMA descriptor contents."
-                                                      " Too much traffic inserted?");
-                                        }
-                                } else if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) {
-                                        /* buffer ourun */
-                                        panic("Buffer overrun/underrun for epid %d. DMA too busy?", epid);
-                                }
-
-                        } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, stall)) {
-                                /* Not really a protocol error, just says that the endpoint gave
-                                   a stall response. Note that error_code cannot be stall for isoc. */
-                                if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
-                                        panic("Isoc traffic cannot stall");
-                                }
-
-                                warn("Stall for epid %d", epid);
-                                etrax_usb_complete_urb(urb, -EPIPE);
-
-                        } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, bus_error)) {
-                                /* Two devices responded to a transaction request. Must be resolved
-                                   by software. FIXME: Reset ports? */
-                                panic("Bus error for epid %d."
-                                      " Two devices responded to transaction request",
-                                      epid);
-
-                        } else if (error_code == IO_STATE_VALUE(R_USB_EPT_DATA, error_code, buffer_error)) {
-                                /* DMA overrun or underrun. */
-                                warn("Buffer overrun/underrun for epid %d. DMA too busy?", epid);
-
-                                /* It seems that error_code = buffer_error in
-                                   R_USB_EPT_DATA/R_USB_EPT_DATA_ISO and ourun = yes in R_USB_STATUS
-                                   are the same error. */
-                                etrax_usb_complete_urb(urb, -EPROTO);
-                        }
-                }
-        }
-
-        DBFEXIT;
-
-}
-
-void etrax_usb_bulk_start_timer_func(unsigned long dummy)
-{
-
-        /* We might enable an EP descriptor behind the current DMA position when it's about
-           to decide that there are no more bulk traffic and it should stop the bulk channel.
-           Therefore we periodically check if the bulk channel is stopped and there is an
-           enabled bulk EP descriptor, in which case we start the bulk channel. */
-        dbg_bulk("bulk_start_timer timed out.");
-
-        if (!(*R_DMA_CH8_SUB0_CMD & IO_MASK(R_DMA_CH8_SUB0_CMD, cmd))) {
-                int epid;
-
-                dbg_bulk("Bulk DMA channel not running.");
-
-                for (epid = 0; epid < NBR_OF_EPIDS; epid++) {
-                        if (TxBulkEPList[epid].command & IO_MASK(USB_EP_command, enable)) {
-                                dbg_bulk("Found enabled EP for epid %d, starting bulk channel.\n",
-                                         epid);
-                                *R_DMA_CH8_SUB0_CMD = IO_STATE(R_DMA_CH8_SUB0_CMD, cmd, start);
-
-                                /* Restart the bulk eot timer since we just started the bulk channel. */
-                                mod_timer(&bulk_eot_timer, jiffies + BULK_EOT_TIMER_INTERVAL);
-
-                                /* No need to search any further. */
-                                break;
-                        }
-                }
-        } else {
-                dbg_bulk("Bulk DMA channel running.");
-        }
-}
-
-void etrax_usb_hc_port_status_interrupt(usb_interrupt_registers_t *reg)
-{
-        etrax_hc_t *hc = reg->hc;
-        __u16 r_usb_rh_port_status_1 = reg->r_usb_rh_port_status_1;
-        __u16 r_usb_rh_port_status_2 = reg->r_usb_rh_port_status_2;
-
-        DBFENTER;
-
-        /* The Etrax RH does not include a wPortChange register, so this has to be handled in software
-           (by saving the old port status value for comparison when the port status interrupt happens).
-           See section 11.16.2.6.2 in the USB 1.1 spec for details. */
-
-        dbg_rh("hc->rh.prev_wPortStatus_1 = 0x%x", hc->rh.prev_wPortStatus_1);
-        dbg_rh("hc->rh.prev_wPortStatus_2 = 0x%x", hc->rh.prev_wPortStatus_2);
-        dbg_rh("r_usb_rh_port_status_1 = 0x%x", r_usb_rh_port_status_1);
-        dbg_rh("r_usb_rh_port_status_2 = 0x%x", r_usb_rh_port_status_2);
-
-        /* C_PORT_CONNECTION is set on any transition. */
-        hc->rh.wPortChange_1 |=
-                ((r_usb_rh_port_status_1 & (1 << RH_PORT_CONNECTION)) !=
-                 (hc->rh.prev_wPortStatus_1 & (1 << RH_PORT_CONNECTION))) ?
-                (1 << RH_PORT_CONNECTION) : 0;
-
-        hc->rh.wPortChange_2 |=
-                ((r_usb_rh_port_status_2 & (1 << RH_PORT_CONNECTION)) !=
-                 (hc->rh.prev_wPortStatus_2 & (1 << RH_PORT_CONNECTION))) ?
-                (1 << RH_PORT_CONNECTION) : 0;
-
-        /* C_PORT_ENABLE is _only_ set on a one to zero transition, i.e. when
-           the port is disabled, not when it's enabled. */
-        hc->rh.wPortChange_1 |=
-                ((hc->rh.prev_wPortStatus_1 & (1 << RH_PORT_ENABLE))
-                 && !(r_usb_rh_port_status_1 & (1 << RH_PORT_ENABLE))) ?
-                (1 << RH_PORT_ENABLE) : 0;
-
-        hc->rh.wPortChange_2 |=
-                ((hc->rh.prev_wPortStatus_2 & (1 << RH_PORT_ENABLE))
-                 && !(r_usb_rh_port_status_2 & (1 << RH_PORT_ENABLE))) ?
-                (1 << RH_PORT_ENABLE) : 0;
-
-        /* C_PORT_SUSPEND is set to one when the device has transitioned out
-           of the suspended state, i.e. when suspend goes from one to zero. */
-        hc->rh.wPortChange_1 |=
-                ((hc->rh.prev_wPortStatus_1 & (1 << RH_PORT_SUSPEND))
-                 && !(r_usb_rh_port_status_1 & (1 << RH_PORT_SUSPEND))) ?
-                (1 << RH_PORT_SUSPEND) : 0;
-
-        hc->rh.wPortChange_2 |=
-                ((hc->rh.prev_wPortStatus_2 & (1 << RH_PORT_SUSPEND))
-                 && !(r_usb_rh_port_status_2 & (1 << RH_PORT_SUSPEND))) ?
-                (1 << RH_PORT_SUSPEND) : 0;
-
-
-        /* C_PORT_RESET is set when reset processing on this port is complete. */
-        hc->rh.wPortChange_1 |=
-                ((hc->rh.prev_wPortStatus_1 & (1 << RH_PORT_RESET))
-                 && !(r_usb_rh_port_status_1 & (1 << RH_PORT_RESET))) ?
-                (1 << RH_PORT_RESET) : 0;
-
-        hc->rh.wPortChange_2 |=
-                ((hc->rh.prev_wPortStatus_2 & (1 << RH_PORT_RESET))
-                 && !(r_usb_rh_port_status_2 & (1 << RH_PORT_RESET))) ?
-                (1 << RH_PORT_RESET) : 0;
-
-        /* Save the new values for next port status change. */
-        hc->rh.prev_wPortStatus_1 = r_usb_rh_port_status_1;
-        hc->rh.prev_wPortStatus_2 = r_usb_rh_port_status_2;
-
-        dbg_rh("hc->rh.wPortChange_1 set to 0x%x", hc->rh.wPortChange_1);
-        dbg_rh("hc->rh.wPortChange_2 set to 0x%x", hc->rh.wPortChange_2);
-
-        DBFEXIT;
-
-}
-
-void etrax_usb_hc_ctl_status_interrupt(usb_interrupt_registers_t *reg)
-{
-        DBFENTER;
-
-        /* FIXME: What should we do if we get ourun or perror? Dump the EP and SB
-           list for the corresponding epid? */
-        if (reg->r_usb_status & IO_MASK(R_USB_STATUS, ourun)) {
-                panic("USB controller got ourun.");
-        }
-        if (reg->r_usb_status & IO_MASK(R_USB_STATUS, perror)) {
-
-                /* Before, etrax_usb_do_intr_recover was called on this epid if it was
-                   an interrupt pipe. I don't see how re-enabling all EP descriptors
-                   will help if there was a programming error. */
-                panic("USB controller got perror.");
-        }
-
-        if (reg->r_usb_status & IO_MASK(R_USB_STATUS, device_mode)) {
-                /* We should never operate in device mode. */
-                panic("USB controller in device mode.");
-        }
-
-        /* These if-statements could probably be nested. */
-        if (reg->r_usb_status & IO_MASK(R_USB_STATUS, host_mode)) {
-                info("USB controller in host mode.");
-        }
-        if (reg->r_usb_status & IO_MASK(R_USB_STATUS, started)) {
-                info("USB controller started.");
-        }
-        if (reg->r_usb_status & IO_MASK(R_USB_STATUS, running)) {
-                info("USB controller running.");
-        }
-
-        DBFEXIT;
-
-}
-
-
-static int etrax_rh_submit_urb(struct urb *urb)
-{
-        struct usb_device *usb_dev = urb->dev;
-        etrax_hc_t *hc = usb_dev->bus->hcpriv;
-        unsigned int pipe = urb->pipe;
-        struct usb_ctrlrequest *cmd = (struct usb_ctrlrequest *) urb->setup_packet;
-        void *data = urb->transfer_buffer;
-        int leni = urb->transfer_buffer_length;
-        int len = 0;
-        int stat = 0;
-
-        __u16 bmRType_bReq;
-        __u16 wValue;
-        __u16 wIndex;
-        __u16 wLength;
-
-        DBFENTER;
-
-        /* FIXME: What is this interrupt urb that is sent to the root hub? */
-        if (usb_pipetype (pipe) == PIPE_INTERRUPT) {
-                dbg_rh("Root-Hub submit IRQ: every %d ms", urb->interval);
-                hc->rh.urb = urb;
-                hc->rh.send = 1;
-                /* FIXME: We could probably remove this line since it's done
-                   in etrax_rh_init_int_timer. (Don't remove it from
-                   etrax_rh_init_int_timer though.) */
-                hc->rh.interval = urb->interval;
-                etrax_rh_init_int_timer(urb);
-                DBFEXIT;
-
-                return 0;
-        }
-
-        bmRType_bReq = cmd->bRequestType | (cmd->bRequest << 8);
-        wValue = le16_to_cpu(cmd->wValue);
-        wIndex = le16_to_cpu(cmd->wIndex);
-        wLength = le16_to_cpu(cmd->wLength);
-
-        dbg_rh("bmRType_bReq : 0x%04x (%d)", bmRType_bReq, bmRType_bReq);
-        dbg_rh("wValue       : 0x%04x (%d)", wValue, wValue);
-        dbg_rh("wIndex       : 0x%04x (%d)", wIndex, wIndex);
-        dbg_rh("wLength      : 0x%04x (%d)", wLength, wLength);
-
-        switch (bmRType_bReq) {
-
-                /* Request Destination:
-                   without flags: Device,
-                   RH_INTERFACE: interface,
-                   RH_ENDPOINT: endpoint,
-                   RH_CLASS means HUB here,
-                   RH_OTHER | RH_CLASS  almost ever means HUB_PORT here
-                 */
-
-        case RH_GET_STATUS:
-                *(__u16 *) data = cpu_to_le16 (1);
-                OK (2);
-
-        case RH_GET_STATUS | RH_INTERFACE:
-                *(__u16 *) data = cpu_to_le16 (0);
-                OK (2);
-
-        case RH_GET_STATUS | RH_ENDPOINT:
-                *(__u16 *) data = cpu_to_le16 (0);
-                OK (2);
-
-        case RH_GET_STATUS | RH_CLASS:
-                *(__u32 *) data = cpu_to_le32 (0);
-                OK (4);         /* hub power ** */
-
-        case RH_GET_STATUS | RH_OTHER | RH_CLASS:
-                if (wIndex == 1) {
-                        *((__u16*)data) = cpu_to_le16(hc->rh.prev_wPortStatus_1);
-                        *((__u16*)data + 1) = cpu_to_le16(hc->rh.wPortChange_1);
-                } else if (wIndex == 2) {
-                        *((__u16*)data) = cpu_to_le16(hc->rh.prev_wPortStatus_2);
-                        *((__u16*)data + 1) = cpu_to_le16(hc->rh.wPortChange_2);
-                } else {
-                        dbg_rh("RH_GET_STATUS whith invalid wIndex!");
-                        OK(0);
-                }
-
-                OK(4);
-
-        case RH_CLEAR_FEATURE | RH_ENDPOINT:
-                switch (wValue) {
-                case (RH_ENDPOINT_STALL):
-                        OK (0);
-                }
-                break;
-
-        case RH_CLEAR_FEATURE | RH_CLASS:
-                switch (wValue) {
-                case (RH_C_HUB_OVER_CURRENT):
-                        OK (0); /* hub power over current ** */
-                }
-                break;
-
-        case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
-                switch (wValue) {
-                case (RH_PORT_ENABLE):
-                        if (wIndex == 1) {
-
-                                dbg_rh("trying to do disable port 1");
-
-                                *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, yes);
-
-                                while (hc->rh.prev_wPortStatus_1 &
-                                       IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes));
-                                *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no);
-                                dbg_rh("Port 1 is disabled");
-
-                        } else if (wIndex == 2) {
-
-                                dbg_rh("trying to do disable port 2");
-
-                                *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, yes);
-
-                                while (hc->rh.prev_wPortStatus_2 &
-                                       IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, yes));
-                                *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no);
-                                dbg_rh("Port 2 is disabled");
-
-                        } else {
-                                dbg_rh("RH_CLEAR_FEATURE->RH_PORT_ENABLE "
-                                       "with invalid wIndex == %d!", wIndex);
-                        }
-
-                        OK (0);
-                case (RH_PORT_SUSPEND):
-                        /* Opposite to suspend should be resume, so we'll do a resume. */
-                        /* FIXME: USB 1.1, 11.16.2.2 says:
-                           "Clearing the PORT_SUSPEND feature causes a host-initiated resume
-                           on the specified port. If the port is not in the Suspended state,
-                           the hub should treat this request as a functional no-operation."
-                           Shouldn't we check if the port is in a suspended state before
-                           resuming? */
-
-                        /* Make sure the controller isn't busy. */
-                        while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-                        if (wIndex == 1) {
-                                *R_USB_COMMAND =
-                                        IO_STATE(R_USB_COMMAND, port_sel, port1) |
-                                        IO_STATE(R_USB_COMMAND, port_cmd, resume) |
-                                        IO_STATE(R_USB_COMMAND, ctrl_cmd, nop);
-                        } else if (wIndex == 2) {
-                                *R_USB_COMMAND =
-                                        IO_STATE(R_USB_COMMAND, port_sel, port2) |
-                                        IO_STATE(R_USB_COMMAND, port_cmd, resume) |
-                                        IO_STATE(R_USB_COMMAND, ctrl_cmd, nop);
-                        } else {
-                                dbg_rh("RH_CLEAR_FEATURE->RH_PORT_SUSPEND "
-                                       "with invalid wIndex == %d!", wIndex);
-                        }
-
-                        OK (0);
-                case (RH_PORT_POWER):
-                        OK (0); /* port power ** */
-                case (RH_C_PORT_CONNECTION):
-                        if (wIndex == 1) {
-                                hc->rh.wPortChange_1 &= ~(1 << RH_PORT_CONNECTION);
-                        } else if (wIndex == 2) {
-                                hc->rh.wPortChange_2 &= ~(1 << RH_PORT_CONNECTION);
-                        } else {
-                                dbg_rh("RH_CLEAR_FEATURE->RH_C_PORT_CONNECTION "
-                                       "with invalid wIndex == %d!", wIndex);
-                        }
-
-                        OK (0);
-                case (RH_C_PORT_ENABLE):
-                        if (wIndex == 1) {
-                                hc->rh.wPortChange_1 &= ~(1 << RH_PORT_ENABLE);
-                        } else if (wIndex == 2) {
-                                hc->rh.wPortChange_2 &= ~(1 << RH_PORT_ENABLE);
-                        } else {
-                                dbg_rh("RH_CLEAR_FEATURE->RH_C_PORT_ENABLE "
-                                       "with invalid wIndex == %d!", wIndex);
-                        }
-                        OK (0);
-                case (RH_C_PORT_SUSPEND):
-/*** WR_RH_PORTSTAT(RH_PS_PSSC); */
-                        OK (0);
-                case (RH_C_PORT_OVER_CURRENT):
-                        OK (0); /* port power over current ** */
-                case (RH_C_PORT_RESET):
-                        if (wIndex == 1) {
-                                hc->rh.wPortChange_1 &= ~(1 << RH_PORT_RESET);
-                        } else if (wIndex == 2) {
-                                hc->rh.wPortChange_2 &= ~(1 << RH_PORT_RESET);
-                        } else {
-                                dbg_rh("RH_CLEAR_FEATURE->RH_C_PORT_RESET "
-                                       "with invalid index == %d!", wIndex);
-                        }
-
-                        OK (0);
-
-                }
-                break;
-
-        case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
-                switch (wValue) {
-                case (RH_PORT_SUSPEND):
-
-                        /* Make sure the controller isn't busy. */
-                        while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-                        if (wIndex == 1) {
-                                *R_USB_COMMAND =
-                                        IO_STATE(R_USB_COMMAND, port_sel, port1) |
-                                        IO_STATE(R_USB_COMMAND, port_cmd, suspend) |
-                                        IO_STATE(R_USB_COMMAND, ctrl_cmd, nop);
-                        } else if (wIndex == 2) {
-                                *R_USB_COMMAND =
-                                        IO_STATE(R_USB_COMMAND, port_sel, port2) |
-                                        IO_STATE(R_USB_COMMAND, port_cmd, suspend) |
-                                        IO_STATE(R_USB_COMMAND, ctrl_cmd, nop);
-                        } else {
-                                dbg_rh("RH_SET_FEATURE->RH_PORT_SUSPEND "
-                                       "with invalid wIndex == %d!", wIndex);
-                        }
-
-                        OK (0);
-                case (RH_PORT_RESET):
-                        if (wIndex == 1) {
-
-                        port_1_reset:
-                                dbg_rh("Doing reset of port 1");
-
-                                /* Make sure the controller isn't busy. */
-                                while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-                                *R_USB_COMMAND =
-                                        IO_STATE(R_USB_COMMAND, port_sel, port1) |
-                                        IO_STATE(R_USB_COMMAND, port_cmd, reset) |
-                                        IO_STATE(R_USB_COMMAND, ctrl_cmd, nop);
-
-                                /* We must wait at least 10 ms for the device to recover.
-                                   15 ms should be enough. */
-                                udelay(15000);
-
-                                /* Wait for reset bit to go low (should be done by now). */
-                                while (hc->rh.prev_wPortStatus_1 &
-                                       IO_STATE(R_USB_RH_PORT_STATUS_1, reset, yes));
-
-                                /* If the port status is
-                                   1) connected and enabled then there is a device and everything is fine
-                                   2) neither connected nor enabled then there is no device, also fine
-                                   3) connected and not enabled then we try again
-                                   (Yes, there are other port status combinations besides these.) */
-
-                                if ((hc->rh.prev_wPortStatus_1 &
-                                     IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes)) &&
-                                    (hc->rh.prev_wPortStatus_1 &
-                                     IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, no))) {
-                                        dbg_rh("Connected device on port 1, but port not enabled?"
-                                               " Trying reset again.");
-                                        goto port_2_reset;
-                                }
-
-                                /* Diagnostic printouts. */
-                                if ((hc->rh.prev_wPortStatus_1 &
-                                     IO_STATE(R_USB_RH_PORT_STATUS_1, connected, no)) &&
-                                    (hc->rh.prev_wPortStatus_1 &
-                                     IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, no))) {
-                                        dbg_rh("No connected device on port 1");
-                                } else if ((hc->rh.prev_wPortStatus_1 &
-                                            IO_STATE(R_USB_RH_PORT_STATUS_1, connected, yes)) &&
-                                           (hc->rh.prev_wPortStatus_1 &
-                                            IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, yes))) {
-                                        dbg_rh("Connected device on port 1, port 1 enabled");
-                                }
-
-                        } else if (wIndex == 2) {
-
-                        port_2_reset:
-                                dbg_rh("Doing reset of port 2");
-
-                                /* Make sure the controller isn't busy. */
-                                while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-                                /* Issue the reset command. */
-                                *R_USB_COMMAND =
-                                        IO_STATE(R_USB_COMMAND, port_sel, port2) |
-                                        IO_STATE(R_USB_COMMAND, port_cmd, reset) |
-                                        IO_STATE(R_USB_COMMAND, ctrl_cmd, nop);
-
-                                /* We must wait at least 10 ms for the device to recover.
-                                   15 ms should be enough. */
-                                udelay(15000);
-
-                                /* Wait for reset bit to go low (should be done by now). */
-                                while (hc->rh.prev_wPortStatus_2 &
-                                       IO_STATE(R_USB_RH_PORT_STATUS_2, reset, yes));
-
-                                /* If the port status is
-                                   1) connected and enabled then there is a device and everything is fine
-                                   2) neither connected nor enabled then there is no device, also fine
-                                   3) connected and not enabled then we try again
-                                   (Yes, there are other port status combinations besides these.) */
-
-                                if ((hc->rh.prev_wPortStatus_2 &
-                                     IO_STATE(R_USB_RH_PORT_STATUS_2, connected, yes)) &&
-                                    (hc->rh.prev_wPortStatus_2 &
-                                     IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, no))) {
-                                        dbg_rh("Connected device on port 2, but port not enabled?"
-                                               " Trying reset again.");
-                                        goto port_2_reset;
-                                }
-
-                                /* Diagnostic printouts. */
-                                if ((hc->rh.prev_wPortStatus_2 &
-                                     IO_STATE(R_USB_RH_PORT_STATUS_2, connected, no)) &&
-                                    (hc->rh.prev_wPortStatus_2 &
-                                     IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, no))) {
-                                        dbg_rh("No connected device on port 2");
-                                } else if ((hc->rh.prev_wPortStatus_2 &
-                                            IO_STATE(R_USB_RH_PORT_STATUS_2, connected, yes)) &&
-                                           (hc->rh.prev_wPortStatus_2 &
-                                            IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, yes))) {
-                                        dbg_rh("Connected device on port 2, port 2 enabled");
-                                }
-
-                        } else {
-                                dbg_rh("RH_SET_FEATURE->RH_PORT_RESET with invalid wIndex = %d", wIndex);
-                        }
-
-                        /* Make sure the controller isn't busy. */
-                        while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-                        /* If all enabled ports were disabled the host controller goes down into
-                           started mode, so we need to bring it back into the running state.
-                           (This is safe even if it's already in the running state.) */
-                        *R_USB_COMMAND =
-                                IO_STATE(R_USB_COMMAND, port_sel, nop) |
-                                IO_STATE(R_USB_COMMAND, port_cmd, reset) |
-                                IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run);
-
-                        dbg_rh("...Done");
-                        OK(0);
-
-                case (RH_PORT_POWER):
-                        OK (0); /* port power ** */
-                case (RH_PORT_ENABLE):
-                        /* There is no port enable command in the host controller, so if the
-                           port is already enabled, we do nothing. If not, we reset the port
-                           (with an ugly goto). */
-
-                        if (wIndex == 1) {
-                                if (hc->rh.prev_wPortStatus_1 &
-                                    IO_STATE(R_USB_RH_PORT_STATUS_1, enabled, no)) {
-                                        goto port_1_reset;
-                                }
-                        } else if (wIndex == 2) {
-                                if (hc->rh.prev_wPortStatus_2 &
-                                    IO_STATE(R_USB_RH_PORT_STATUS_2, enabled, no)) {
-                                        goto port_2_reset;
-                                }
-                        } else {
-                                dbg_rh("RH_SET_FEATURE->RH_GET_STATUS with invalid wIndex = %d", wIndex);
-                        }
-                        OK (0);
-                }
-                break;
-
-        case RH_SET_ADDRESS:
-                hc->rh.devnum = wValue;
-                dbg_rh("RH address set to: %d", hc->rh.devnum);
-                OK (0);
-
-        case RH_GET_DESCRIPTOR:
-                switch ((wValue & 0xff00) >> 8) {
-                case (0x01):    /* device descriptor */
-                        len = min_t(unsigned int, leni, min_t(unsigned int, sizeof (root_hub_dev_des), wLength));
-                        memcpy (data, root_hub_dev_des, len);
-                        OK (len);
-                case (0x02):    /* configuration descriptor */
-                        len = min_t(unsigned int, leni, min_t(unsigned int, sizeof (root_hub_config_des), wLength));
-                        memcpy (data, root_hub_config_des, len);
-                        OK (len);
-                case (0x03):    /* string descriptors */
-                        len = usb_root_hub_string (wValue & 0xff,
-                                                   0xff, "ETRAX 100LX",
-                                                   data, wLength);
-                        if (len > 0) {
-                                OK(min(leni, len));
-                        } else {
-                                stat = -EPIPE;
-                        }
-
-                }
-                break;
-
-        case RH_GET_DESCRIPTOR | RH_CLASS:
-                root_hub_hub_des[2] = hc->rh.numports;
-                len = min_t(unsigned int, leni, min_t(unsigned int, sizeof (root_hub_hub_des), wLength));
-                memcpy (data, root_hub_hub_des, len);
-                OK (len);
-
-        case RH_GET_CONFIGURATION:
-                *(__u8 *) data = 0x01;
-                OK (1);
-
-        case RH_SET_CONFIGURATION:
-                OK (0);
-
-        default:
-                stat = -EPIPE;
-        }
-
-        urb->actual_length = len;
-        urb->status = stat;
-        urb->dev = NULL;
-        if (urb->complete) {
-                urb->complete(urb, NULL);
-        }
-        DBFEXIT;
-
-        return 0;
-}
-
-static void
-etrax_usb_bulk_eot_timer_func(unsigned long dummy)
-{
-        /* Because of a race condition in the top half, we might miss a bulk eot.
-           This timer "simulates" a bulk eot if we don't get one for a while, hopefully
-           correcting the situation. */
-        dbg_bulk("bulk_eot_timer timed out.");
-        etrax_usb_hc_bulk_eot_interrupt(1);
-}
-
-static void*
-etrax_usb_buffer_alloc(struct usb_bus* bus, size_t size,
-        unsigned mem_flags, dma_addr_t *dma)
-{
-  return kmalloc(size, mem_flags);
-}
-
-static void
-etrax_usb_buffer_free(struct usb_bus *bus, size_t size, void *addr, dma_addr_t dma)
-{
-  kfree(addr);
-}
-
-
-static struct device fake_device;
-
-static int __init etrax_usb_hc_init(void)
-{
-        static etrax_hc_t *hc;
-        struct usb_bus *bus;
-        struct usb_device *usb_rh;
-        int i;
-
-        DBFENTER;
-
-        info("ETRAX 100LX USB-HCD %s (c) 2001-2003 Axis Communications AB\n", usb_hcd_version);
-
-        hc = kmalloc(sizeof(etrax_hc_t), GFP_KERNEL);
-        assert(hc != NULL);
-
-        /* We use kmem_cache_* to make sure that all DMA desc. are dword aligned */
-        /* Note that we specify sizeof(USB_EP_Desc_t) as the size, but also allocate
-           SB descriptors from this cache. This is ok since sizeof(USB_EP_Desc_t) ==
-           sizeof(USB_SB_Desc_t). */
-
-        usb_desc_cache = kmem_cache_create("usb_desc_cache", sizeof(USB_EP_Desc_t), 0,
-                                           SLAB_HWCACHE_ALIGN, 0, 0);
-        assert(usb_desc_cache != NULL);
-
-        top_half_reg_cache = kmem_cache_create("top_half_reg_cache",
-                                               sizeof(usb_interrupt_registers_t),
-                                               0, SLAB_HWCACHE_ALIGN, 0, 0);
-        assert(top_half_reg_cache != NULL);
-
-        isoc_compl_cache = kmem_cache_create("isoc_compl_cache",
-                                                sizeof(usb_isoc_complete_data_t),
-                                                0, SLAB_HWCACHE_ALIGN, 0, 0);
-        assert(isoc_compl_cache != NULL);
-
-        etrax_usb_bus = bus = usb_alloc_bus(&etrax_usb_device_operations);
-        hc->bus = bus;
-        bus->bus_name="ETRAX 100LX";
-        bus->hcpriv = hc;
-
-        /* Initialize RH to the default address.
-           And make sure that we have no status change indication */
-        hc->rh.numports = 2;  /* The RH has two ports */
-        hc->rh.devnum = 1;
-        hc->rh.wPortChange_1 = 0;
-        hc->rh.wPortChange_2 = 0;
-
-        /* Also initate the previous values to zero */
-        hc->rh.prev_wPortStatus_1 = 0;
-        hc->rh.prev_wPortStatus_2 = 0;
-
-        /* Initialize the intr-traffic flags */
-        /* FIXME: This isn't used. (Besides, the error field isn't initialized.) */
-        hc->intr.sleeping = 0;
-        hc->intr.wq = NULL;
-
-        epid_usage_bitmask = 0;
-        epid_out_traffic = 0;
-
-        /* Mark the invalid epid as being used. */
-        set_bit(INVALID_EPID, (void *)&epid_usage_bitmask);
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, INVALID_EPID);
-        nop();
-        /* The valid bit should still be set ('invalid' is in our world; not the hardware's). */
-        *R_USB_EPT_DATA = (IO_STATE(R_USB_EPT_DATA, valid, yes) |
-                           IO_FIELD(R_USB_EPT_DATA, max_len, 1));
-
-        /* Mark the dummy epid as being used. */
-        set_bit(DUMMY_EPID, (void *)&epid_usage_bitmask);
-        *R_USB_EPT_INDEX = IO_FIELD(R_USB_EPT_INDEX, value, DUMMY_EPID);
-        nop();
-        *R_USB_EPT_DATA = (IO_STATE(R_USB_EPT_DATA, valid, no) |
-                           IO_FIELD(R_USB_EPT_DATA, max_len, 1));
-
-        /* Initialize the urb list by initiating a head for each list. */
-        for (i = 0; i < NBR_OF_EPIDS; i++) {
-                INIT_LIST_HEAD(&urb_list[i]);
-        }
-        spin_lock_init(&urb_list_lock);
-
-        INIT_LIST_HEAD(&urb_unlink_list);
-
-
-        /* Initiate the bulk start timer. */
-        init_timer(&bulk_start_timer);
-        bulk_start_timer.expires = jiffies + BULK_START_TIMER_INTERVAL;
-        bulk_start_timer.function = etrax_usb_bulk_start_timer_func;
-        add_timer(&bulk_start_timer);
-
-
-        /* Initiate the bulk eot timer. */
-        init_timer(&bulk_eot_timer);
-        bulk_eot_timer.expires = jiffies + BULK_EOT_TIMER_INTERVAL;
-        bulk_eot_timer.function = etrax_usb_bulk_eot_timer_func;
-        add_timer(&bulk_eot_timer);
-
-        /* Set up the data structures for USB traffic. Note that this must be done before
-           any interrupt that relies on sane DMA list occurrs. */
-        init_rx_buffers();
-        init_tx_bulk_ep();
-        init_tx_ctrl_ep();
-        init_tx_intr_ep();
-        init_tx_isoc_ep();
-
-        device_initialize(&fake_device);
-        kobject_set_name(&fake_device.kobj, "etrax_usb");
-        kobject_add(&fake_device.kobj);
-        kobject_uevent(&fake_device.kobj, KOBJ_ADD);
-        hc->bus->controller = &fake_device;
-        usb_register_bus(hc->bus);
-
-        *R_IRQ_MASK2_SET =
-                /* Note that these interrupts are not used. */
-                IO_STATE(R_IRQ_MASK2_SET, dma8_sub0_descr, set) |
-                /* Sub channel 1 (ctrl) descr. interrupts are used. */
-                IO_STATE(R_IRQ_MASK2_SET, dma8_sub1_descr, set) |
-                IO_STATE(R_IRQ_MASK2_SET, dma8_sub2_descr, set) |
-                /* Sub channel 3 (isoc) descr. interrupts are used. */
-                IO_STATE(R_IRQ_MASK2_SET, dma8_sub3_descr, set);
-
-        /* Note that the dma9_descr interrupt is not used. */
-        *R_IRQ_MASK2_SET =
-                IO_STATE(R_IRQ_MASK2_SET, dma9_eop, set) |
-                IO_STATE(R_IRQ_MASK2_SET, dma9_descr, set);
-
-        /* FIXME: Enable iso_eof only when isoc traffic is running. */
-        *R_USB_IRQ_MASK_SET =
-                IO_STATE(R_USB_IRQ_MASK_SET, iso_eof, set) |
-                IO_STATE(R_USB_IRQ_MASK_SET, bulk_eot, set) |
-                IO_STATE(R_USB_IRQ_MASK_SET, epid_attn, set) |
-                IO_STATE(R_USB_IRQ_MASK_SET, port_status, set) |
-                IO_STATE(R_USB_IRQ_MASK_SET, ctl_status, set);
-
-
-        if (request_irq(ETRAX_USB_HC_IRQ, etrax_usb_hc_interrupt_top_half, 0,
-                        "ETRAX 100LX built-in USB (HC)", hc)) {
-                err("Could not allocate IRQ %d for USB", ETRAX_USB_HC_IRQ);
-                etrax_usb_hc_cleanup();
-                DBFEXIT;
-                return -1;
-        }
-
-        if (request_irq(ETRAX_USB_RX_IRQ, etrax_usb_rx_interrupt, 0,
-                        "ETRAX 100LX built-in USB (Rx)", hc)) {
-                err("Could not allocate IRQ %d for USB", ETRAX_USB_RX_IRQ);
-                etrax_usb_hc_cleanup();
-                DBFEXIT;
-                return -1;
-        }
-
-        if (request_irq(ETRAX_USB_TX_IRQ, etrax_usb_tx_interrupt, 0,
-                        "ETRAX 100LX built-in USB (Tx)", hc)) {
-                err("Could not allocate IRQ %d for USB", ETRAX_USB_TX_IRQ);
-                etrax_usb_hc_cleanup();
-                DBFEXIT;
-                return -1;
-        }
-
-        /* R_USB_COMMAND:
-           USB commands in host mode. The fields in this register should all be
-           written to in one write. Do not read-modify-write one field at a time. A
-           write to this register will trigger events in the USB controller and an
-           incomplete command may lead to unpredictable results, and in worst case
-           even to a deadlock in the controller.
-           (Note however that the busy field is read-only, so no need to write to it.) */
-
-        /* Check the busy bit before writing to R_USB_COMMAND. */
-
-        while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-        /* Reset the USB interface. */
-        *R_USB_COMMAND =
-                IO_STATE(R_USB_COMMAND, port_sel, nop) |
-                IO_STATE(R_USB_COMMAND, port_cmd, reset) |
-                IO_STATE(R_USB_COMMAND, ctrl_cmd, reset);
-
-        /* Designer's Reference, p. 8 - 10 says we should Initate R_USB_FM_PSTART to 0x2A30 (10800),
-           to guarantee that control traffic gets 10% of the bandwidth, and periodic transfer may
-           allocate the rest (90%). This doesn't work though. Read on for a lenghty explanation.
-
-           While there is a difference between rev. 2 and rev. 3 of the ETRAX 100LX regarding the NAK
-           behaviour, it doesn't solve this problem. What happens is that a control transfer will not
-           be interrupted in its data stage when PSTART happens (the point at which periodic traffic
-           is started). Thus, if PSTART is set to 10800 and its IN or OUT token is NAKed until just before
-           PSTART happens, it will continue the IN/OUT transfer as long as it's ACKed. After it's done,
-           there may be too little time left for an isochronous transfer, causing an epid attention
-           interrupt due to perror. The work-around for this is to let the control transfers run at the
-           end of the frame instead of at the beginning, and will be interrupted just fine if it doesn't
-           fit into the frame. However, since there will *always* be a control transfer at the beginning
-           of the frame, regardless of what we set PSTART to, that transfer might be a 64-byte transfer
-           which consumes up to 15% of the frame, leaving only 85% for periodic traffic. The solution to
-           this would be to 'dummy allocate' 5% of the frame with the usb_claim_bandwidth function to make
-           sure that the periodic transfers that are inserted will always fit in the frame.
-
-           The idea was suggested that a control transfer could be split up into several 8 byte transfers,
-           so that it would be interrupted by PSTART, but since this can't be done for an IN transfer this
-           hasn't been implemented.
-
-           The value 11960 is chosen to be just after the SOF token, with a couple of bit times extra
-           for possible bit stuffing. */
-
-        *R_USB_FM_PSTART = IO_FIELD(R_USB_FM_PSTART, value, 11960);
-
-#ifdef CONFIG_ETRAX_USB_HOST_PORT1
-        *R_USB_PORT1_DISABLE = IO_STATE(R_USB_PORT1_DISABLE, disable, no);
-#endif
-
-#ifdef CONFIG_ETRAX_USB_HOST_PORT2
-        *R_USB_PORT2_DISABLE = IO_STATE(R_USB_PORT2_DISABLE, disable, no);
-#endif
-
-        while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-        /* Configure the USB interface as a host controller. */
-        *R_USB_COMMAND =
-                IO_STATE(R_USB_COMMAND, port_sel, nop) |
-                IO_STATE(R_USB_COMMAND, port_cmd, reset) |
-                IO_STATE(R_USB_COMMAND, ctrl_cmd, host_config);
-
-        /* Note: Do not reset any ports here. Await the port status interrupts, to have a controlled
-           sequence of resetting the ports. If we reset both ports now, and there are devices
-           on both ports, we will get a bus error because both devices will answer the set address
-           request. */
-
-        while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-        /* Start processing of USB traffic. */
-        *R_USB_COMMAND =
-                IO_STATE(R_USB_COMMAND, port_sel, nop) |
-                IO_STATE(R_USB_COMMAND, port_cmd, reset) |
-                IO_STATE(R_USB_COMMAND, ctrl_cmd, host_run);
-
-        while (*R_USB_COMMAND & IO_MASK(R_USB_COMMAND, busy));
-
-        usb_rh = usb_alloc_dev(NULL, hc->bus, 0);
-        hc->bus->root_hub = usb_rh;
-        usb_rh->state = USB_STATE_ADDRESS;
-        usb_rh->speed = USB_SPEED_FULL;
-        usb_rh->devnum = 1;
-        hc->bus->devnum_next = 2;
-        usb_rh->ep0.desc.wMaxPacketSize = __const_cpu_to_le16(64);
-        usb_get_device_descriptor(usb_rh, USB_DT_DEVICE_SIZE);
-        usb_new_device(usb_rh);
-
-        DBFEXIT;
-
-        return 0;
-}
-
-static void etrax_usb_hc_cleanup(void)
-{
-        DBFENTER;
-
-        free_irq(ETRAX_USB_HC_IRQ, NULL);
-        free_irq(ETRAX_USB_RX_IRQ, NULL);
-        free_irq(ETRAX_USB_TX_IRQ, NULL);
-
-        usb_deregister_bus(etrax_usb_bus);
-
-        /* FIXME: call kmem_cache_destroy here? */
-
-        DBFEXIT;
-}
-
-module_init(etrax_usb_hc_init);
-module_exit(etrax_usb_hc_cleanup);
diff --git a/drivers/usb/host/hc_crisv10.h b/drivers/usb/host/hc_crisv10.h
deleted file mode 100644
index 62f77111d418..000000000000
--- a/drivers/usb/host/hc_crisv10.h
+++ /dev/null
@@ -1,289 +0,0 @@
-#ifndef __LINUX_ETRAX_USB_H
-#define __LINUX_ETRAX_USB_H
-
-#include <linux/types.h>
-#include <linux/list.h>
-
-typedef struct USB_IN_Desc {
-        volatile __u16 sw_len;
-        volatile __u16 command;
-        volatile unsigned long next;
-        volatile unsigned long buf;
-        volatile __u16 hw_len;
-        volatile __u16 status;
-} USB_IN_Desc_t;
-
-typedef struct USB_SB_Desc {
-        volatile __u16 sw_len;
-        volatile __u16 command;
-        volatile unsigned long next;
-        volatile unsigned long buf;
-        __u32 dummy;
-} USB_SB_Desc_t;
-
-typedef struct USB_EP_Desc {
-        volatile __u16 hw_len;
-        volatile __u16 command;
-        volatile unsigned long sub;
-        volatile unsigned long next;
-        __u32 dummy;
-} USB_EP_Desc_t;
-
-struct virt_root_hub {
-        int devnum;
-        void *urb;
-        void *int_addr;
-        int send;
-        int interval;
-        int numports;
-        struct timer_list rh_int_timer;
-        volatile __u16 wPortChange_1;
-        volatile __u16 wPortChange_2;
-        volatile __u16 prev_wPortStatus_1;
-        volatile __u16 prev_wPortStatus_2;
-};
-
-struct etrax_usb_intr_traffic {
-        int sleeping;
-        int error;
-        struct wait_queue *wq;
-};
-
-typedef struct etrax_usb_hc {
-        struct usb_bus *bus;
-        struct virt_root_hub rh;
-        struct etrax_usb_intr_traffic intr;
-} etrax_hc_t;
-
-typedef enum {
-        STARTED,
-        NOT_STARTED,
-        UNLINK,
-        TRANSFER_DONE,
-        WAITING_FOR_DESCR_INTR
-} etrax_usb_urb_state_t;
-
-
-
-typedef struct etrax_usb_urb_priv {
-        /* The first_sb field is used for freeing all SB descriptors belonging
-           to an urb. The corresponding ep descriptor's sub pointer cannot be
-           used for this since the DMA advances the sub pointer as it processes
-           the sb list. */
-        USB_SB_Desc_t *first_sb;
-        /* The last_sb field referes to the last SB descriptor that belongs to
-           this urb. This is important to know so we can free the SB descriptors
-           that ranges between first_sb and last_sb. */
-        USB_SB_Desc_t *last_sb;
-
-        /* The rx_offset field is used in ctrl and bulk traffic to keep track
-           of the offset in the urb's transfer_buffer where incoming data should be
-           copied to. */
-        __u32 rx_offset;
-
-        /* Counter used in isochronous transfers to keep track of the
-           number of packets received/transmitted.  */
-        __u32 isoc_packet_counter;
-
-        /* This field is used to pass information about the urb's current state between
-           the various interrupt handlers (thus marked volatile). */
-        volatile etrax_usb_urb_state_t urb_state;
-
-        /* Connection between the submitted urb and ETRAX epid number */
-        __u8 epid;
-
-        /* The rx_data_list field is used for periodic traffic, to hold
-           received data for later processing in the the complete_urb functions,
-           where the data us copied to the urb's transfer_buffer. Basically, we
-           use this intermediate storage because we don't know when it's safe to
-           reuse the transfer_buffer (FIXME?). */
-        struct list_head rx_data_list;
-} etrax_urb_priv_t;
-
-/* This struct is for passing data from the top half to the bottom half. */
-typedef struct usb_interrupt_registers
-{
-        etrax_hc_t *hc;
-        __u32 r_usb_epid_attn;
-        __u8 r_usb_status;
-        __u16 r_usb_rh_port_status_1;
-        __u16 r_usb_rh_port_status_2;
-        __u32 r_usb_irq_mask_read;
-        __u32 r_usb_fm_number;
-        struct work_struct usb_bh;
-} usb_interrupt_registers_t;
-
-/* This struct is for passing data from the isoc top half to the isoc bottom half. */
-typedef struct usb_isoc_complete_data
-{
-        struct urb *urb;
-        struct work_struct usb_bh;
-} usb_isoc_complete_data_t;
-
-/* This struct holds data we get from the rx descriptors for DMA channel 9
-   for periodic traffic (intr and isoc). */
-typedef struct rx_data
-{
-        void *data;
-        int length;
-        struct list_head list;
-} rx_data_t;
-
-typedef struct urb_entry
-{
-        struct urb *urb;
-        struct list_head list;
-} urb_entry_t;
-
-/* ---------------------------------------------------------------------------
-   Virtual Root HUB
-   ------------------------------------------------------------------------- */
-/* destination of request */
-#define RH_INTERFACE               0x01
-#define RH_ENDPOINT                0x02
-#define RH_OTHER                   0x03
-
-#define RH_CLASS                   0x20
-#define RH_VENDOR                  0x40
-
-/* Requests: bRequest << 8 | bmRequestType */
-#define RH_GET_STATUS           0x0080
-#define RH_CLEAR_FEATURE        0x0100
-#define RH_SET_FEATURE          0x0300
-#define RH_SET_ADDRESS          0x0500
-#define RH_GET_DESCRIPTOR       0x0680
-#define RH_SET_DESCRIPTOR       0x0700
-#define RH_GET_CONFIGURATION    0x0880
-#define RH_SET_CONFIGURATION    0x0900
-#define RH_GET_STATE            0x0280
-#define RH_GET_INTERFACE        0x0A80
-#define RH_SET_INTERFACE        0x0B00
-#define RH_SYNC_FRAME           0x0C80
-/* Our Vendor Specific Request */
-#define RH_SET_EP               0x2000
-
-
-/* Hub port features */
-#define RH_PORT_CONNECTION         0x00
-#define RH_PORT_ENABLE             0x01
-#define RH_PORT_SUSPEND            0x02
-#define RH_PORT_OVER_CURRENT       0x03
-#define RH_PORT_RESET              0x04
-#define RH_PORT_POWER              0x08
-#define RH_PORT_LOW_SPEED          0x09
-#define RH_C_PORT_CONNECTION       0x10
-#define RH_C_PORT_ENABLE           0x11
-#define RH_C_PORT_SUSPEND          0x12
-#define RH_C_PORT_OVER_CURRENT     0x13
-#define RH_C_PORT_RESET            0x14
-
-/* Hub features */
-#define RH_C_HUB_LOCAL_POWER       0x00
-#define RH_C_HUB_OVER_CURRENT      0x01
-
-#define RH_DEVICE_REMOTE_WAKEUP    0x00
-#define RH_ENDPOINT_STALL          0x01
-
-/* Our Vendor Specific feature */
-#define RH_REMOVE_EP               0x00
-
-
-#define RH_ACK                     0x01
-#define RH_REQ_ERR                 -1
-#define RH_NACK                    0x00
-
-/* Field definitions for */
-
-#define USB_IN_command__eol__BITNR      0 /* command macros */
-#define USB_IN_command__eol__WIDTH      1
-#define USB_IN_command__eol__no         0
-#define USB_IN_command__eol__yes        1
-
-#define USB_IN_command__intr__BITNR     3
-#define USB_IN_command__intr__WIDTH     1
-#define USB_IN_command__intr__no        0
-#define USB_IN_command__intr__yes       1
-
-#define USB_IN_status__eop__BITNR       1 /* status macros. */
-#define USB_IN_status__eop__WIDTH       1
-#define USB_IN_status__eop__no          0
-#define USB_IN_status__eop__yes         1
-
-#define USB_IN_status__eot__BITNR       5
-#define USB_IN_status__eot__WIDTH       1
-#define USB_IN_status__eot__no          0
-#define USB_IN_status__eot__yes         1
-
-#define USB_IN_status__error__BITNR     6
-#define USB_IN_status__error__WIDTH     1
-#define USB_IN_status__error__no        0
-#define USB_IN_status__error__yes       1
-
-#define USB_IN_status__nodata__BITNR    7
-#define USB_IN_status__nodata__WIDTH    1
-#define USB_IN_status__nodata__no       0
-#define USB_IN_status__nodata__yes      1
-
-#define USB_IN_status__epid__BITNR      8
-#define USB_IN_status__epid__WIDTH      5
-
-#define USB_EP_command__eol__BITNR      0
-#define USB_EP_command__eol__WIDTH      1
-#define USB_EP_command__eol__no         0
-#define USB_EP_command__eol__yes        1
-
-#define USB_EP_command__eof__BITNR      1
-#define USB_EP_command__eof__WIDTH      1
-#define USB_EP_command__eof__no         0
-#define USB_EP_command__eof__yes        1
-
-#define USB_EP_command__intr__BITNR     3
-#define USB_EP_command__intr__WIDTH     1
-#define USB_EP_command__intr__no        0
-#define USB_EP_command__intr__yes       1
-
-#define USB_EP_command__enable__BITNR   4
-#define USB_EP_command__enable__WIDTH   1
-#define USB_EP_command__enable__no      0
-#define USB_EP_command__enable__yes     1
-
-#define USB_EP_command__hw_valid__BITNR 5
-#define USB_EP_command__hw_valid__WIDTH 1
-#define USB_EP_command__hw_valid__no    0
-#define USB_EP_command__hw_valid__yes   1
-
-#define USB_EP_command__epid__BITNR     8
-#define USB_EP_command__epid__WIDTH     5
-
-#define USB_SB_command__eol__BITNR      0 /* command macros. */
-#define USB_SB_command__eol__WIDTH      1
-#define USB_SB_command__eol__no         0
-#define USB_SB_command__eol__yes        1
-
-#define USB_SB_command__eot__BITNR      1
-#define USB_SB_command__eot__WIDTH      1
-#define USB_SB_command__eot__no         0
-#define USB_SB_command__eot__yes        1
-
-#define USB_SB_command__intr__BITNR     3
-#define USB_SB_command__intr__WIDTH     1
-#define USB_SB_command__intr__no        0
-#define USB_SB_command__intr__yes       1
-
-#define USB_SB_command__tt__BITNR       4
-#define USB_SB_command__tt__WIDTH       2
-#define USB_SB_command__tt__zout        0
-#define USB_SB_command__tt__in          1
-#define USB_SB_command__tt__out         2
-#define USB_SB_command__tt__setup       3
-
-
-#define USB_SB_command__rem__BITNR      8
-#define USB_SB_command__rem__WIDTH      6
-
-#define USB_SB_command__full__BITNR     6
-#define USB_SB_command__full__WIDTH     1
-#define USB_SB_command__full__no        0
-#define USB_SB_command__full__yes       1
-
-#endif
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index f0d29eda3c6d..e8bbe8bc2598 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -486,9 +486,6 @@ static int ohci_run (struct ohci_hcd *ohci)
          * or if bus glue did the same (e.g. for PCI add-in cards with
          * PCI PM support).
          */
-        ohci_dbg (ohci, "resetting from state '%s', control = 0x%x\n",
-                        hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS),
-                        ohci_readl (ohci, &ohci->regs->control));
         if ((ohci->hc_control & OHCI_CTRL_RWC) != 0
                         && !device_may_wakeup(hcd->self.controller))
                 device_init_wakeup(hcd->self.controller, 1);
@@ -744,9 +741,6 @@ static void ohci_stop (struct usb_hcd *hcd)
 {
         struct ohci_hcd         *ohci = hcd_to_ohci (hcd);
 
-        ohci_dbg (ohci, "stop %s controller (state 0x%02x)\n",
-                hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS),
-                hcd->state);
         ohci_dump (ohci, 1);
 
         flush_scheduled_work();
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index b331ac4d0d62..79705609fd0c 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -20,10 +20,16 @@
 
 /*-------------------------------------------------------------------------*/
 
+static int broken_suspend(struct usb_hcd *hcd)
+{
+        device_init_wakeup(&hcd->self.root_hub->dev, 0);
+        return 0;
+}
+
 /* AMD 756, for most chips (early revs), corrupts register
  * values on read ... so enable the vendor workaround.
  */
-static int __devinit ohci_quirk_amd756(struct usb_hcd *hcd)
+static int ohci_quirk_amd756(struct usb_hcd *hcd)
 {
         struct ohci_hcd *ohci = hcd_to_ohci (hcd);
 
@@ -31,16 +37,14 @@ static int __devinit ohci_quirk_amd756(struct usb_hcd *hcd)
         ohci_dbg (ohci, "AMD756 erratum 4 workaround\n");
 
         /* also erratum 10 (suspend/resume issues) */
-        device_init_wakeup(&hcd->self.root_hub->dev, 0);
-
-        return 0;
+        return broken_suspend(hcd);
 }
 
 /* Apple's OHCI driver has a lot of bizarre workarounds
  * for this chip.  Evidently control and bulk lists
  * can get confused.  (B&W G3 models, and ...)
  */
-static int __devinit ohci_quirk_opti(struct usb_hcd *hcd)
+static int ohci_quirk_opti(struct usb_hcd *hcd)
 {
         struct ohci_hcd *ohci = hcd_to_ohci (hcd);
 
@@ -53,7 +57,7 @@ static int __devinit ohci_quirk_opti(struct usb_hcd *hcd)
  * identify the USB (fn2). This quirk might apply to more or
  * even all NSC stuff.
  */
-static int __devinit ohci_quirk_ns(struct usb_hcd *hcd)
+static int ohci_quirk_ns(struct usb_hcd *hcd)
 {
         struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
         struct pci_dev  *b;
@@ -75,7 +79,7 @@ static int __devinit ohci_quirk_ns(struct usb_hcd *hcd)
  * delays before control or bulk queues get re-activated
  * in finish_unlinks()
  */
-static int __devinit ohci_quirk_zfmicro(struct usb_hcd *hcd)
+static int ohci_quirk_zfmicro(struct usb_hcd *hcd)
 {
         struct ohci_hcd *ohci = hcd_to_ohci (hcd);
 
@@ -88,7 +92,7 @@ static int __devinit ohci_quirk_zfmicro(struct usb_hcd *hcd)
 /* Check for Toshiba SCC OHCI which has big endian registers
  * and little endian in memory data structures
  */
-static int __devinit ohci_quirk_toshiba_scc(struct usb_hcd *hcd)
+static int ohci_quirk_toshiba_scc(struct usb_hcd *hcd)
 {
         struct ohci_hcd *ohci = hcd_to_ohci (hcd);
 
@@ -129,6 +133,18 @@ static const struct pci_device_id ohci_pci_quirks[] = {
                 PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA_2, 0x01b6),
                 .driver_data = (unsigned long)ohci_quirk_toshiba_scc,
         },
+        {
+                /* Toshiba portege 4000 */
+                .vendor         = PCI_VENDOR_ID_AL,
+                .device         = 0x5237,
+                .subvendor      = PCI_VENDOR_ID_TOSHIBA_2,
+                .subdevice      = 0x0004,
+                .driver_data    = (unsigned long) broken_suspend,
+        },
+        {
+                PCI_DEVICE(PCI_VENDOR_ID_ITE, 0x8152),
+                .driver_data = (unsigned long) broken_suspend,
+        },
         /* FIXME for some of the early AMD 760 southbridges, OHCI
          * won't work at all.  blacklist them.
          */
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index 19a0cc02b9a2..4aed305982ec 100644
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -123,10 +123,14 @@ static struct uhci_td *uhci_alloc_td(struct uhci_hcd *uhci)
 
 static void uhci_free_td(struct uhci_hcd *uhci, struct uhci_td *td)
 {
-        if (!list_empty(&td->list))
+        if (!list_empty(&td->list)) {
                 dev_warn(uhci_dev(uhci), "td %p still in list!\n", td);
-        if (!list_empty(&td->fl_list))
+                WARN_ON(1);
+        }
+        if (!list_empty(&td->fl_list)) {
                 dev_warn(uhci_dev(uhci), "td %p still in fl_list!\n", td);
+                WARN_ON(1);
+        }
 
         dma_pool_free(uhci->td_pool, td, td->dma_handle);
 }
@@ -291,8 +295,10 @@ static struct uhci_qh *uhci_alloc_qh(struct uhci_hcd *uhci,
 static void uhci_free_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
 {
         WARN_ON(qh->state != QH_STATE_IDLE && qh->udev);
-        if (!list_empty(&qh->queue))
+        if (!list_empty(&qh->queue)) {
                 dev_warn(uhci_dev(uhci), "qh %p list not empty!\n", qh);
+                WARN_ON(1);
+        }
 
         list_del(&qh->node);
         if (qh->udev) {
@@ -740,9 +746,11 @@ static void uhci_free_urb_priv(struct uhci_hcd *uhci,
 {
         struct uhci_td *td, *tmp;
 
-        if (!list_empty(&urbp->node))
+        if (!list_empty(&urbp->node)) {
                 dev_warn(uhci_dev(uhci), "urb %p still on QH's list!\n",
                                 urbp->urb);
+                WARN_ON(1);
+        }
 
         list_for_each_entry_safe(td, tmp, &urbp->td_list, list) {
                 uhci_remove_td_from_urbp(td);
diff --git a/drivers/usb/input/ati_remote2.c b/drivers/usb/input/ati_remote2.c
index 83f1f79db7c7..6459be90599c 100644
--- a/drivers/usb/input/ati_remote2.c
+++ b/drivers/usb/input/ati_remote2.c
@@ -2,6 +2,7 @@
  * ati_remote2 - ATI/Philips USB RF remote driver
  *
  * Copyright (C) 2005 Ville Syrjala <syrjala@sci.fi>
+ * Copyright (C) 2007 Peter Stokes <linux@dadeos.freeserve.co.uk>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2
@@ -11,13 +12,29 @@
 #include <linux/usb/input.h>
 
 #define DRIVER_DESC    "ATI/Philips USB RF remote driver"
-#define DRIVER_VERSION "0.1"
+#define DRIVER_VERSION "0.2"
 
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_VERSION(DRIVER_VERSION);
 MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
 MODULE_LICENSE("GPL");
 
+/*
+ * ATI Remote Wonder II Channel Configuration
+ *
+ * The remote control can by assigned one of sixteen "channels" in order to facilitate
+ * the use of multiple remote controls within range of each other.
+ * A remote's "channel" may be altered by pressing and holding the "PC" button for
+ * approximately 3 seconds, after which the button will slowly flash the count of the
+ * currently configured "channel", using the numeric keypad enter a number between 1 and
+ * 16 and then the "PC" button again, the button will slowly flash the count of the
+ * newly configured "channel".
+ */
+
+static unsigned int channel_mask = 0xFFFF;
+module_param(channel_mask, uint, 0644);
+MODULE_PARM_DESC(channel_mask, "Bitmask of channels to accept <15:Channel16>...<1:Channel2><0:Channel1>");
+
 static unsigned int mode_mask = 0x1F;
 module_param(mode_mask, uint, 0644);
 MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
@@ -146,15 +163,23 @@ static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
 {
         struct input_dev *idev = ar2->idev;
         u8 *data = ar2->buf[0];
+        int channel, mode;
+
+        channel = data[0] >> 4;
+
+        if (!((1 << channel) & channel_mask))
+                return;
 
-        if (data[0] > 4) {
+        mode = data[0] & 0x0F;
+
+        if (mode > 4) {
                 dev_err(&ar2->intf[0]->dev,
                         "Unknown mode byte (%02x %02x %02x %02x)\n",
                         data[3], data[2], data[1], data[0]);
                 return;
         }
 
-        if (!((1 << data[0]) & mode_mask))
+        if (!((1 << mode) & mode_mask))
                 return;
 
         input_event(idev, EV_REL, REL_X, (s8) data[1]);
@@ -177,9 +202,16 @@ static void ati_remote2_input_key(struct ati_remote2 *ar2)
 {
         struct input_dev *idev = ar2->idev;
         u8 *data = ar2->buf[1];
-        int hw_code, index;
+        int channel, mode, hw_code, index;
+
+        channel = data[0] >> 4;
+
+        if (!((1 << channel) & channel_mask))
+                return;
 
-        if (data[0] > 4) {
+        mode = data[0] & 0x0F;
+
+        if (mode > 4) {
                 dev_err(&ar2->intf[1]->dev,
                         "Unknown mode byte (%02x %02x %02x %02x)\n",
                         data[3], data[2], data[1], data[0]);
@@ -199,16 +231,16 @@ static void ati_remote2_input_key(struct ati_remote2 *ar2)
                  * events for the mouse pad so we filter out any subsequent
                  * events from the same mode key.
                  */
-                if (ar2->mode == data[0])
+                if (ar2->mode == mode)
                         return;
 
                 if (data[1] == 0)
-                        ar2->mode = data[0];
+                        ar2->mode = mode;
 
-                hw_code |= data[0] << 8;
+                hw_code |= mode << 8;
         }
 
-        if (!((1 << data[0]) & mode_mask))
+        if (!((1 << mode) & mode_mask))
                 return;
 
         index = ati_remote2_lookup(hw_code);
@@ -379,6 +411,41 @@ static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
         }
 }
 
+static int ati_remote2_setup(struct ati_remote2 *ar2)
+{
+        int r, i, channel;
+
+        /*
+         * Configure receiver to only accept input from remote "channel"
+         *  channel == 0  -> Accept input from any remote channel
+         *  channel == 1  -> Only accept input from remote channel 1
+         *  channel == 2  -> Only accept input from remote channel 2
+         *  ...
+         *  channel == 16 -> Only accept input from remote channel 16
+         */
+
+        channel = 0;
+        for (i = 0; i < 16; i++) {
+                if ((1 << i) & channel_mask) {
+                        if (!(~(1 << i) & 0xFFFF & channel_mask))
+                                channel = i + 1;
+                        break;
+                }
+        }
+
+        r = usb_control_msg(ar2->udev, usb_sndctrlpipe(ar2->udev, 0),
+                            0x20,
+                            USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+                            channel, 0x0, NULL, 0, USB_CTRL_SET_TIMEOUT);
+        if (r) {
+                dev_err(&ar2->udev->dev, "%s - failed to set channel due to error: %d\n",
+                        __FUNCTION__, r);
+                return r;
+        }
+
+        return 0;
+}
+
 static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
 {
         struct usb_device *udev = interface_to_usbdev(interface);
@@ -409,6 +476,10 @@ static int ati_remote2_probe(struct usb_interface *interface, const struct usb_d
         if (r)
                 goto fail2;
 
+        r = ati_remote2_setup(ar2);
+        if (r)
+                goto fail2;
+
         usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
         strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
 
diff --git a/drivers/usb/input/gtco.c b/drivers/usb/input/gtco.c
index 203cdc1bbba4..ae756e0afc99 100644
--- a/drivers/usb/input/gtco.c
+++ b/drivers/usb/input/gtco.c
@@ -1047,13 +1047,10 @@ static void gtco_disconnect(struct usb_interface *interface)
 
         /* Grab private device ptr */
         struct gtco    *device = usb_get_intfdata (interface);
-        struct input_dev *inputdev;
-
-        inputdev = device->inputdevice;
 
         /* Now reverse all the registration stuff */
         if (device) {
-                input_unregister_device(inputdev);
+                input_unregister_device(device->inputdevice);
                 usb_kill_urb(device->urbinfo);
                 usb_free_urb(device->urbinfo);
                 usb_buffer_free(device->usbdev, REPORT_MAX_SIZE,
diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c
index 75bfab95ab3c..77145f9db043 100644
--- a/drivers/usb/misc/adutux.c
+++ b/drivers/usb/misc/adutux.c
@@ -285,23 +285,24 @@ static int adu_open(struct inode *inode, struct file *file)
         /* save device in the file's private structure */
         file->private_data = dev;
 
-        /* initialize in direction */
-        dev->read_buffer_length = 0;
-
-        /* fixup first read by having urb waiting for it */
-        usb_fill_int_urb(dev->interrupt_in_urb,dev->udev,
-                         usb_rcvintpipe(dev->udev,
-                                        dev->interrupt_in_endpoint->bEndpointAddress),
-                         dev->interrupt_in_buffer,
-                         le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize),
-                         adu_interrupt_in_callback, dev,
-                         dev->interrupt_in_endpoint->bInterval);
-        /* dev->interrupt_in_urb->transfer_flags |= URB_ASYNC_UNLINK; */
-        dev->read_urb_finished = 0;
-        usb_submit_urb(dev->interrupt_in_urb, GFP_KERNEL);
-        /* we ignore failure */
-        /* end of fixup for first read */
+        if (dev->open_count == 1) {
+                /* initialize in direction */
+                dev->read_buffer_length = 0;
 
+                /* fixup first read by having urb waiting for it */
+                usb_fill_int_urb(dev->interrupt_in_urb,dev->udev,
+                                 usb_rcvintpipe(dev->udev,
+                                                dev->interrupt_in_endpoint->bEndpointAddress),
+                                 dev->interrupt_in_buffer,
+                                 le16_to_cpu(dev->interrupt_in_endpoint->wMaxPacketSize),
+                                 adu_interrupt_in_callback, dev,
+                                 dev->interrupt_in_endpoint->bInterval);
+                /* dev->interrupt_in_urb->transfer_flags |= URB_ASYNC_UNLINK; */
+                dev->read_urb_finished = 0;
+                retval = usb_submit_urb(dev->interrupt_in_urb, GFP_KERNEL);
+                if (retval)
+                        --dev->open_count;
+        }
         up(&dev->sem);
 
 exit_no_device:
@@ -469,7 +470,7 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count,
                                                          adu_interrupt_in_callback,
                                                          dev,
                                                          dev->interrupt_in_endpoint->bInterval);
-                                        retval = usb_submit_urb(dev->interrupt_in_urb, GFP_KERNEL);
+                                        retval = usb_submit_urb(dev->interrupt_in_urb, GFP_ATOMIC);
                                         if (!retval) {
                                                 spin_unlock_irqrestore(&dev->buflock, flags);
                                                 dbg(2," %s : submitted OK", __FUNCTION__);
@@ -539,7 +540,7 @@ static ssize_t adu_write(struct file *file, const __user char *buffer,
         size_t bytes_written = 0;
         size_t bytes_to_write;
         size_t buffer_size;
-        int retval = 0;
+        int retval;
         int timeout = 0;
 
         dbg(2," %s : enter, count = %Zd", __FUNCTION__, count);
@@ -547,7 +548,9 @@ static ssize_t adu_write(struct file *file, const __user char *buffer,
         dev = file->private_data;
 
         /* lock this object */
-        down_interruptible(&dev->sem);
+        retval = down_interruptible(&dev->sem);
+        if (retval)
+                goto exit_nolock;
 
         /* verify that the device wasn't unplugged */
         if (dev->udev == NULL || dev->minor == 0) {
@@ -575,7 +578,11 @@ static ssize_t adu_write(struct file *file, const __user char *buffer,
                         }
                         up(&dev->sem);
                         timeout = interruptible_sleep_on_timeout(&dev->write_wait, timeout);
-                        down_interruptible(&dev->sem);
+                        retval = down_interruptible(&dev->sem);
+                        if (retval) {
+                                retval = bytes_written ? bytes_written : retval;
+                                goto exit_nolock;
+                        }
                         if (timeout > 0) {
                                 break;
                         }
@@ -637,6 +644,7 @@ static ssize_t adu_write(struct file *file, const __user char *buffer,
 exit:
         /* unlock the device */
         up(&dev->sem);
+exit_nolock:
 
         dbg(2," %s : leave, return value %d", __FUNCTION__, retval);
 
diff --git a/drivers/usb/misc/cypress_cy7c63.c b/drivers/usb/misc/cypress_cy7c63.c
index b63b5f34b2aa..d721380b242d 100644
--- a/drivers/usb/misc/cypress_cy7c63.c
+++ b/drivers/usb/misc/cypress_cy7c63.c
@@ -246,11 +246,13 @@ static void cypress_disconnect(struct usb_interface *interface)
         struct cypress *dev;
 
         dev = usb_get_intfdata(interface);
-        usb_set_intfdata(interface, NULL);
 
         /* remove device attribute files */
         device_remove_file(&interface->dev, &dev_attr_port0);
         device_remove_file(&interface->dev, &dev_attr_port1);
+        /* the intfdata can be set to NULL only after the
+         * device files have been removed */
+        usb_set_intfdata(interface, NULL);
 
         usb_put_dev(dev->udev);
 
diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index bc3327e3dd78..e2172e5cf152 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -2304,7 +2304,6 @@ static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi)
 #define OHCI_QUIRK_SUPERIO 0x02
 #define OHCI_QUIRK_INITRESET 0x04
 #define OHCI_BIG_ENDIAN 0x08
-#define OHCI_QUIRK_ZFMICRO 0x10
 #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
 #define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \
         OHCI_INTR_WDH)
@@ -2910,24 +2909,28 @@ static int __init ftdi_elan_init(void)
         INIT_LIST_HEAD(&ftdi_static_list);
         status_queue = create_singlethread_workqueue("ftdi-status-control");
         if (!status_queue)
-                goto err1;
+                goto err_status_queue;
         command_queue = create_singlethread_workqueue("ftdi-command-engine");
         if (!command_queue)
-                goto err2;
+                goto err_command_queue;
         respond_queue = create_singlethread_workqueue("ftdi-respond-engine");
         if (!respond_queue)
-                goto err3;
+                goto err_respond_queue;
         result = usb_register(&ftdi_elan_driver);
-        if (result)
+        if (result) {
+                destroy_workqueue(status_queue);
+                destroy_workqueue(command_queue);
+                destroy_workqueue(respond_queue);
                 printk(KERN_ERR "usb_register failed. Error number %d\n",
                        result);
+        }
         return result;
 
- err3:
+ err_respond_queue:
         destroy_workqueue(command_queue);
- err2:
+ err_command_queue:
         destroy_workqueue(status_queue);
- err1:
+ err_status_queue:
         printk(KERN_ERR "%s couldn't create workqueue\n", ftdi_elan_driver.name);
         return -ENOMEM;
 }
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c
index d69665c8de02..fc51207b71b8 100644
--- a/drivers/usb/misc/iowarrior.c
+++ b/drivers/usb/misc/iowarrior.c
@@ -118,7 +118,7 @@ static int usb_get_report(struct usb_device *dev,
                                USB_DIR_IN | USB_TYPE_CLASS |
                                USB_RECIP_INTERFACE, (type << 8) + id,
                                inter->desc.bInterfaceNumber, buf, size,
-                               GET_TIMEOUT);
+                               GET_TIMEOUT*HZ);
 }
 //#endif
 
@@ -133,7 +133,7 @@ static int usb_set_report(struct usb_interface *intf, unsigned char type,
                                USB_TYPE_CLASS | USB_RECIP_INTERFACE,
                                (type << 8) + id,
                                intf->cur_altsetting->desc.bInterfaceNumber, buf,
-                               size, 1);
+                               size, HZ);
 }
 
 /*---------------------*/
@@ -417,14 +417,14 @@ static ssize_t iowarrior_write(struct file *file,
                 if (!int_out_urb) {
                         retval = -ENOMEM;
                         dbg("%s Unable to allocate urb ", __func__);
-                        goto error;
+                        goto error_no_urb;
                 }
                 buf = usb_buffer_alloc(dev->udev, dev->report_size,
                                        GFP_KERNEL, &int_out_urb->transfer_dma);
                 if (!buf) {
                         retval = -ENOMEM;
                         dbg("%s Unable to allocate buffer ", __func__);
-                        goto error;
+                        goto error_no_buffer;
                 }
                 usb_fill_int_urb(int_out_urb, dev->udev,
                                  usb_sndintpipe(dev->udev,
@@ -459,7 +459,9 @@ static ssize_t iowarrior_write(struct file *file,
 error:
         usb_buffer_free(dev->udev, dev->report_size, buf,
                         int_out_urb->transfer_dma);
+error_no_buffer:
         usb_free_urb(int_out_urb);
+error_no_urb:
         atomic_dec(&dev->write_busy);
         wake_up_interruptible(&dev->write_wait);
 exit:
@@ -748,7 +750,6 @@ static int iowarrior_probe(struct usb_interface *interface,
         struct usb_endpoint_descriptor *endpoint;
         int i;
         int retval = -ENOMEM;
-        int idele = 0;
 
         /* allocate memory for our device state and intialize it */
         dev = kzalloc(sizeof(struct iowarrior), GFP_KERNEL);
@@ -824,11 +825,10 @@ static int iowarrior_probe(struct usb_interface *interface,
 
         /* Set the idle timeout to 0, if this is interface 0 */
         if (dev->interface->cur_altsetting->desc.bInterfaceNumber == 0) {
-                idele = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
-                                        0x0A,
-                                        USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0,
-                                        0, NULL, 0, USB_CTRL_SET_TIMEOUT);
-                dbg("idele = %d", idele);
+            usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+                            0x0A,
+                            USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0,
+                            0, NULL, 0, USB_CTRL_SET_TIMEOUT);
         }
         /* allow device read and ioctl */
         dev->present = 1;
diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c
index 788a11e6772f..11555bde655b 100644
--- a/drivers/usb/misc/ldusb.c
+++ b/drivers/usb/misc/ldusb.c
@@ -62,6 +62,8 @@
 #define USB_DEVICE_ID_VERNIER_SKIP      0x0003
 #define USB_DEVICE_ID_VERNIER_CYCLOPS   0x0004
 
+#define USB_VENDOR_ID_MICROCHIP         0x04d8
+#define USB_DEVICE_ID_PICDEM            0x000c
 
 #ifdef CONFIG_USB_DYNAMIC_MINORS
 #define USB_LD_MINOR_BASE       0
@@ -89,6 +91,7 @@ static struct usb_device_id ld_usb_table [] = {
         { USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_GOTEMP) },
         { USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_SKIP) },
         { USB_DEVICE(USB_VENDOR_ID_VERNIER, USB_DEVICE_ID_VERNIER_CYCLOPS) },
+        { USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICDEM) },
         { }                                     /* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, ld_usb_table);
diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c
index ada2ebc464ae..887ef953f3d8 100644
--- a/drivers/usb/misc/usblcd.c
+++ b/drivers/usb/misc/usblcd.c
@@ -47,6 +47,7 @@ struct usb_lcd {
 #define to_lcd_dev(d) container_of(d, struct usb_lcd, kref)
 
 static struct usb_driver lcd_driver;
+static DEFINE_MUTEX(usb_lcd_open_mutex);
 
 
 static void lcd_delete(struct kref *kref)
@@ -68,6 +69,7 @@ static int lcd_open(struct inode *inode, struct file *file)
 
         subminor = iminor(inode);
 
+        mutex_lock(&usb_lcd_open_mutex);
         interface = usb_find_interface(&lcd_driver, subminor);
         if (!interface) {
                 err ("USBLCD: %s - error, can't find device for minor %d",
@@ -89,6 +91,7 @@ static int lcd_open(struct inode *inode, struct file *file)
         file->private_data = dev;
 
 exit:
+        mutex_unlock(&usb_lcd_open_mutex);
         return retval;
 }
 
@@ -347,7 +350,7 @@ static void lcd_disconnect(struct usb_interface *interface)
         int minor = interface->minor;
 
         /* prevent skel_open() from racing skel_disconnect() */
-        lock_kernel();
+        mutex_lock(&usb_lcd_open_mutex);
 
         dev = usb_get_intfdata(interface);
         usb_set_intfdata(interface, NULL);
@@ -355,7 +358,7 @@ static void lcd_disconnect(struct usb_interface *interface)
         /* give back our minor */
         usb_deregister_dev(interface, &lcd_class);
  
-        unlock_kernel();
+        mutex_unlock(&usb_lcd_open_mutex);
 
         /* decrement our usage count */
         kref_put(&dev->kref, lcd_delete);
diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c
index b2bedd974ac3..0af11a66207c 100644
--- a/drivers/usb/mon/mon_bin.c
+++ b/drivers/usb/mon/mon_bin.c
@@ -356,8 +356,10 @@ static inline char mon_bin_get_setup(unsigned char *setupb,
         if (!usb_pipecontrol(urb->pipe) || ev_type != 'S')
                 return '-';
 
-        if (urb->transfer_flags & URB_NO_SETUP_DMA_MAP)
+        if (urb->dev->bus->uses_dma &&
+            (urb->transfer_flags & URB_NO_SETUP_DMA_MAP)) {
                 return mon_dmapeek(setupb, urb->setup_dma, SETUP_LEN);
+        }
         if (urb->setup_packet == NULL)
                 return 'Z';
 
@@ -369,7 +371,8 @@ static char mon_bin_get_data(const struct mon_reader_bin *rp,
     unsigned int offset, struct urb *urb, unsigned int length)
 {
 
-        if (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) {
+        if (urb->dev->bus->uses_dma &&
+            (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {
                 mon_dmapeek_vec(rp, offset, urb->transfer_dma, length);
                 return 0;
         }
@@ -440,7 +443,7 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb,
         /* We use the fact that usb_pipein() returns 0x80 */
         ep->epnum = usb_pipeendpoint(urb->pipe) | usb_pipein(urb->pipe);
         ep->devnum = usb_pipedevice(urb->pipe);
-        ep->busnum = rp->r.m_bus->u_bus->busnum;
+        ep->busnum = urb->dev->bus->busnum;
         ep->id = (unsigned long) urb;
         ep->ts_sec = ts.tv_sec;
         ep->ts_usec = ts.tv_usec;
@@ -500,7 +503,7 @@ static void mon_bin_error(void *data, struct urb *urb, int error)
         /* We use the fact that usb_pipein() returns 0x80 */
         ep->epnum = usb_pipeendpoint(urb->pipe) | usb_pipein(urb->pipe);
         ep->devnum = usb_pipedevice(urb->pipe);
-        ep->busnum = rp->r.m_bus->u_bus->busnum;
+        ep->busnum = urb->dev->bus->busnum;
         ep->id = (unsigned long) urb;
         ep->status = error;
 
@@ -515,7 +518,6 @@ static void mon_bin_error(void *data, struct urb *urb, int error)
 static int mon_bin_open(struct inode *inode, struct file *file)
 {
         struct mon_bus *mbus;
-        struct usb_bus *ubus;
         struct mon_reader_bin *rp;
         size_t size;
         int rc;
@@ -525,7 +527,7 @@ static int mon_bin_open(struct inode *inode, struct file *file)
                 mutex_unlock(&mon_lock);
                 return -ENODEV;
         }
-        if ((ubus = mbus->u_bus) == NULL) {
+        if (mbus != &mon_bus0 && mbus->u_bus == NULL) {
                 printk(KERN_ERR TAG ": consistency error on open\n");
                 mutex_unlock(&mon_lock);
                 return -ENODEV;
diff --git a/drivers/usb/mon/mon_main.c b/drivers/usb/mon/mon_main.c
index c9739e7b35e5..8a1df2c9c73e 100644
--- a/drivers/usb/mon/mon_main.c
+++ b/drivers/usb/mon/mon_main.c
@@ -16,8 +16,6 @@
 #include "usb_mon.h"
 #include "../core/hcd.h"
 
-static void mon_submit(struct usb_bus *ubus, struct urb *urb);
-static void mon_complete(struct usb_bus *ubus, struct urb *urb);
 static void mon_stop(struct mon_bus *mbus);
 static void mon_dissolve(struct mon_bus *mbus, struct usb_bus *ubus);
 static void mon_bus_drop(struct kref *r);
@@ -25,6 +23,7 @@ static void mon_bus_init(struct usb_bus *ubus);
 
 DEFINE_MUTEX(mon_lock);
 
+struct mon_bus mon_bus0;                /* Pseudo bus meaning "all buses" */
 static LIST_HEAD(mon_buses);            /* All buses we know: struct mon_bus */
 
 /*
@@ -35,22 +34,19 @@ static LIST_HEAD(mon_buses);		/* All buses we know: struct mon_bus */
 void mon_reader_add(struct mon_bus *mbus, struct mon_reader *r)
 {
         unsigned long flags;
-        struct usb_bus *ubus;
+        struct list_head *p;
 
         spin_lock_irqsave(&mbus->lock, flags);
         if (mbus->nreaders == 0) {
-                ubus = mbus->u_bus;
-                if (ubus->monitored) {
-                        /*
-                         * Something is really broken, refuse to go on and
-                         * possibly corrupt ops pointers or worse.
-                         */
-                        printk(KERN_ERR TAG ": bus %d is already monitored\n",
-                            ubus->busnum);
-                        spin_unlock_irqrestore(&mbus->lock, flags);
-                        return;
+                if (mbus == &mon_bus0) {
+                        list_for_each (p, &mon_buses) {
+                                struct mon_bus *m1;
+                                m1 = list_entry(p, struct mon_bus, bus_link);
+                                m1->u_bus->monitored = 1;
+                        }
+                } else {
+                        mbus->u_bus->monitored = 1;
                 }
-                ubus->monitored = 1;
         }
         mbus->nreaders++;
         list_add_tail(&r->r_link, &mbus->r_list);
@@ -80,77 +76,79 @@ void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r)
 
 /*
  */
-static void mon_submit(struct usb_bus *ubus, struct urb *urb)
+static void mon_bus_submit(struct mon_bus *mbus, struct urb *urb)
 {
-        struct mon_bus *mbus;
         unsigned long flags;
         struct list_head *pos;
         struct mon_reader *r;
 
-        mbus = ubus->mon_bus;
-        if (mbus == NULL)
-                goto out_unlocked;
-
         spin_lock_irqsave(&mbus->lock, flags);
-        if (mbus->nreaders == 0)
-                goto out_locked;
-
         mbus->cnt_events++;
         list_for_each (pos, &mbus->r_list) {
                 r = list_entry(pos, struct mon_reader, r_link);
                 r->rnf_submit(r->r_data, urb);
         }
-
         spin_unlock_irqrestore(&mbus->lock, flags);
         return;
+}
 
-out_locked:
-        spin_unlock_irqrestore(&mbus->lock, flags);
-out_unlocked:
-        return;
+static void mon_submit(struct usb_bus *ubus, struct urb *urb)
+{
+        struct mon_bus *mbus;
+
+        if ((mbus = ubus->mon_bus) != NULL)
+                mon_bus_submit(mbus, urb);
+        mon_bus_submit(&mon_bus0, urb);
 }
 
 /*
  */
-static void mon_submit_error(struct usb_bus *ubus, struct urb *urb, int error)
+static void mon_bus_submit_error(struct mon_bus *mbus, struct urb *urb, int error)
 {
-        struct mon_bus *mbus;
         unsigned long flags;
         struct list_head *pos;
         struct mon_reader *r;
 
-        mbus = ubus->mon_bus;
-        if (mbus == NULL)
-                goto out_unlocked;
-
         spin_lock_irqsave(&mbus->lock, flags);
-        if (mbus->nreaders == 0)
-                goto out_locked;
-
         mbus->cnt_events++;
         list_for_each (pos, &mbus->r_list) {
                 r = list_entry(pos, struct mon_reader, r_link);
                 r->rnf_error(r->r_data, urb, error);
         }
-
         spin_unlock_irqrestore(&mbus->lock, flags);
         return;
+}
 
-out_locked:
-        spin_unlock_irqrestore(&mbus->lock, flags);
-out_unlocked:
-        return;
+static void mon_submit_error(struct usb_bus *ubus, struct urb *urb, int error)
+{
+        struct mon_bus *mbus;
+
+        if ((mbus = ubus->mon_bus) != NULL)
+                mon_bus_submit_error(mbus, urb, error);
+        mon_bus_submit_error(&mon_bus0, urb, error);
 }
 
 /*
  */
-static void mon_complete(struct usb_bus *ubus, struct urb *urb)
+static void mon_bus_complete(struct mon_bus *mbus, struct urb *urb)
 {
-        struct mon_bus *mbus;
         unsigned long flags;
         struct list_head *pos;
         struct mon_reader *r;
 
+        spin_lock_irqsave(&mbus->lock, flags);
+        mbus->cnt_events++;
+        list_for_each (pos, &mbus->r_list) {
+                r = list_entry(pos, struct mon_reader, r_link);
+                r->rnf_complete(r->r_data, urb);
+        }
+        spin_unlock_irqrestore(&mbus->lock, flags);
+}
+
+static void mon_complete(struct usb_bus *ubus, struct urb *urb)
+{
+        struct mon_bus *mbus;
+
         mbus = ubus->mon_bus;
         if (mbus == NULL) {
                 /*
@@ -162,13 +160,8 @@ static void mon_complete(struct usb_bus *ubus, struct urb *urb)
                 return;
         }
 
-        spin_lock_irqsave(&mbus->lock, flags);
-        mbus->cnt_events++;
-        list_for_each (pos, &mbus->r_list) {
-                r = list_entry(pos, struct mon_reader, r_link);
-                r->rnf_complete(r->r_data, urb);
-        }
-        spin_unlock_irqrestore(&mbus->lock, flags);
+        mon_bus_complete(mbus, urb);
+        mon_bus_complete(&mon_bus0, urb);
 }
 
 /* int (*unlink_urb) (struct urb *urb, int status); */
@@ -179,14 +172,26 @@ static void mon_complete(struct usb_bus *ubus, struct urb *urb)
 static void mon_stop(struct mon_bus *mbus)
 {
         struct usb_bus *ubus = mbus->u_bus;
+        struct list_head *p;
 
-        /*
-         * A stop can be called for a dissolved mon_bus in case of
-         * a reader staying across an rmmod foo_hcd.
-         */
-        if (ubus != NULL) {
-                ubus->monitored = 0;
-                mb();
+        if (mbus == &mon_bus0) {
+                list_for_each (p, &mon_buses) {
+                        mbus = list_entry(p, struct mon_bus, bus_link);
+                        /*
+                         * We do not change nreaders here, so rely on mon_lock.
+                         */
+                        if (mbus->nreaders == 0 && (ubus = mbus->u_bus) != NULL)
+                                ubus->monitored = 0;
+                }
+        } else {
+                /*
+                 * A stop can be called for a dissolved mon_bus in case of
+                 * a reader staying across an rmmod foo_hcd, so test ->u_bus.
+                 */
+                if (mon_bus0.nreaders == 0 && (ubus = mbus->u_bus) != NULL) {
+                        ubus->monitored = 0;
+                        mb();
+                }
         }
 }
 
@@ -199,6 +204,10 @@ static void mon_stop(struct mon_bus *mbus)
 static void mon_bus_add(struct usb_bus *ubus)
 {
         mon_bus_init(ubus);
+        mutex_lock(&mon_lock);
+        if (mon_bus0.nreaders != 0)
+                ubus->monitored = 1;
+        mutex_unlock(&mon_lock);
 }
 
 /*
@@ -250,12 +259,7 @@ static struct usb_mon_operations mon_ops_0 = {
 static void mon_dissolve(struct mon_bus *mbus, struct usb_bus *ubus)
 {
 
-        /*
-         * Never happens, but...
-         */
         if (ubus->monitored) {
-                printk(KERN_ERR TAG ": bus %d is dissolved while monitored\n",
-                    ubus->busnum);
                 ubus->monitored = 0;
                 mb();
         }
@@ -263,6 +267,8 @@ static void mon_dissolve(struct mon_bus *mbus, struct usb_bus *ubus)
         ubus->mon_bus = NULL;
         mbus->u_bus = NULL;
         mb();
+
+        /* We want synchronize_irq() here, but that needs an argument. */
 }
 
 /*
@@ -295,9 +301,8 @@ static void mon_bus_init(struct usb_bus *ubus)
          */
         mbus->u_bus = ubus;
         ubus->mon_bus = mbus;
-        mbus->uses_dma = ubus->uses_dma;
 
-        mbus->text_inited = mon_text_add(mbus, ubus);
+        mbus->text_inited = mon_text_add(mbus, ubus->busnum);
         // mon_bin_add(...)
 
         mutex_lock(&mon_lock);
@@ -309,6 +314,18 @@ err_alloc:
         return;
 }
 
+static void mon_bus0_init(void)
+{
+        struct mon_bus *mbus = &mon_bus0;
+
+        kref_init(&mbus->ref);
+        spin_lock_init(&mbus->lock);
+        INIT_LIST_HEAD(&mbus->r_list);
+
+        mbus->text_inited = mon_text_add(mbus, 0);
+        // mbus->bin_inited = mon_bin_add(mbus, 0);
+}
+
 /*
  * Search a USB bus by number. Notice that USB bus numbers start from one,
  * which we may later use to identify "all" with zero.
@@ -322,6 +339,9 @@ struct mon_bus *mon_bus_lookup(unsigned int num)
         struct list_head *p;
         struct mon_bus *mbus;
 
+        if (num == 0) {
+                return &mon_bus0;
+        }
         list_for_each (p, &mon_buses) {
                 mbus = list_entry(p, struct mon_bus, bus_link);
                 if (mbus->u_bus->busnum == num) {
@@ -341,6 +361,8 @@ static int __init mon_init(void)
         if ((rc = mon_bin_init()) != 0)
                 goto err_bin;
 
+        mon_bus0_init();
+
         if (usb_mon_register(&mon_ops_0) != 0) {
                 printk(KERN_NOTICE TAG ": unable to register with the core\n");
                 rc = -ENODEV;
@@ -374,6 +396,7 @@ static void __exit mon_exit(void)
         usb_mon_deregister();
 
         mutex_lock(&mon_lock);
+
         while (!list_empty(&mon_buses)) {
                 p = mon_buses.next;
                 mbus = list_entry(p, struct mon_bus, bus_link);
@@ -397,6 +420,11 @@ static void __exit mon_exit(void)
                 mon_dissolve(mbus, mbus->u_bus);
                 kref_put(&mbus->ref, mon_bus_drop);
         }
+
+        mbus = &mon_bus0;
+        if (mbus->text_inited)
+                mon_text_del(mbus);
+
         mutex_unlock(&mon_lock);
 
         mon_text_exit();
diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c
index 494ee3b9a226..ec0cc51e39ac 100644
--- a/drivers/usb/mon/mon_text.c
+++ b/drivers/usb/mon/mon_text.c
@@ -31,9 +31,21 @@
  * to a local DoS. But we have to keep to root in order to prevent
  * password sniffing from HID devices.
  */
-#define EVENT_MAX  (2*PAGE_SIZE / sizeof(struct mon_event_text))
+#define EVENT_MAX  (4*PAGE_SIZE / sizeof(struct mon_event_text))
 
-#define PRINTF_DFL  160
+/*
+ * Potentially unlimited number; we limit it for similar allocations.
+ * The usbfs limits this to 128, but we're not quite as generous.
+ */
+#define ISODESC_MAX   5
+
+#define PRINTF_DFL  250   /* with 5 ISOs segs */
+
+struct mon_iso_desc {
+        int status;
+        unsigned int offset;
+        unsigned int length;    /* Unsigned here, signed in URB. Historic. */
+};
 
 struct mon_event_text {
         struct list_head e_link;
@@ -41,10 +53,16 @@ struct mon_event_text {
         unsigned int pipe;      /* Pipe */
         unsigned long id;       /* From pointer, most of the time */
         unsigned int tstamp;
+        int busnum;
         int length;             /* Depends on type: xfer length or act length */
         int status;
+        int interval;
+        int start_frame;
+        int error_count;
         char setup_flag;
         char data_flag;
+        int numdesc;            /* Full number */
+        struct mon_iso_desc isodesc[ISODESC_MAX];
         unsigned char setup[SETUP_MAX];
         unsigned char data[DATA_MAX];
 };
@@ -68,6 +86,28 @@ static struct dentry *mon_dir;		/* Usually /sys/kernel/debug/usbmon */
 
 static void mon_text_ctor(void *, struct kmem_cache *, unsigned long);
 
+struct mon_text_ptr {
+        int cnt, limit;
+        char *pbuf;
+};
+
+static struct mon_event_text *
+    mon_text_read_wait(struct mon_reader_text *rp, struct file *file);
+static void mon_text_read_head_t(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep);
+static void mon_text_read_head_u(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep);
+static void mon_text_read_statset(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep);
+static void mon_text_read_intstat(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep);
+static void mon_text_read_isostat(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep);
+static void mon_text_read_isodesc(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep);
+static void mon_text_read_data(struct mon_reader_text *rp,
+    struct mon_text_ptr *p, const struct mon_event_text *ep);
+
 /*
  * mon_text_submit
  * mon_text_complete
@@ -84,8 +124,10 @@ static inline char mon_text_get_setup(struct mon_event_text *ep,
         if (!usb_pipecontrol(urb->pipe) || ev_type != 'S')
                 return '-';
 
-        if (mbus->uses_dma && (urb->transfer_flags & URB_NO_SETUP_DMA_MAP))
+        if (urb->dev->bus->uses_dma &&
+            (urb->transfer_flags & URB_NO_SETUP_DMA_MAP)) {
                 return mon_dmapeek(ep->setup, urb->setup_dma, SETUP_MAX);
+        }
         if (urb->setup_packet == NULL)
                 return 'Z';     /* '0' would be not as pretty. */
 
@@ -104,10 +146,10 @@ static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb,
                 len = DATA_MAX;
 
         if (usb_pipein(pipe)) {
-                if (ev_type == 'S')
+                if (ev_type != 'C')
                         return '<';
         } else {
-                if (ev_type == 'C')
+                if (ev_type != 'S')
                         return '>';
         }
 
@@ -120,8 +162,10 @@ static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb,
          * contain non-NULL garbage in case the upper level promised to
          * set DMA for the HCD.
          */
-        if (mbus->uses_dma && (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP))
+        if (urb->dev->bus->uses_dma &&
+            (urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {
                 return mon_dmapeek(ep->data, urb->transfer_dma, len);
+        }
 
         if (urb->transfer_buffer == NULL)
                 return 'Z';     /* '0' would be not as pretty. */
@@ -146,6 +190,9 @@ static void mon_text_event(struct mon_reader_text *rp, struct urb *urb,
 {
         struct mon_event_text *ep;
         unsigned int stamp;
+        struct usb_iso_packet_descriptor *fp;
+        struct mon_iso_desc *dp;
+        int i, ndesc;
 
         stamp = mon_get_timestamp();
 
@@ -158,12 +205,36 @@ static void mon_text_event(struct mon_reader_text *rp, struct urb *urb,
         ep->type = ev_type;
         ep->pipe = urb->pipe;
         ep->id = (unsigned long) urb;
+        ep->busnum = urb->dev->bus->busnum;
         ep->tstamp = stamp;
         ep->length = (ev_type == 'S') ?
             urb->transfer_buffer_length : urb->actual_length;
         /* Collecting status makes debugging sense for submits, too */
         ep->status = urb->status;
 
+        if (usb_pipeint(urb->pipe)) {
+                ep->interval = urb->interval;
+        } else if (usb_pipeisoc(urb->pipe)) {
+                ep->interval = urb->interval;
+                ep->start_frame = urb->start_frame;
+                ep->error_count = urb->error_count;
+        }
+        ep->numdesc = urb->number_of_packets;
+        if (usb_pipeisoc(urb->pipe) && urb->number_of_packets > 0) {
+                if ((ndesc = urb->number_of_packets) > ISODESC_MAX)
+                        ndesc = ISODESC_MAX;
+                fp = urb->iso_frame_desc;
+                dp = ep->isodesc;
+                for (i = 0; i < ndesc; i++) {
+                        dp->status = fp->status;
+                        dp->offset = fp->offset;
+                        dp->length = (ev_type == 'S') ?
+                            fp->length : fp->actual_length;
+                        fp++;
+                        dp++;
+                }
+        }
+
         ep->setup_flag = mon_text_get_setup(ep, urb, ev_type, rp->r.m_bus);
         ep->data_flag = mon_text_get_data(ep, urb, ep->length, ev_type,
                         rp->r.m_bus);
@@ -199,6 +270,7 @@ static void mon_text_error(void *data, struct urb *urb, int error)
         ep->type = 'E';
         ep->pipe = urb->pipe;
         ep->id = (unsigned long) urb;
+        ep->busnum = 0;
         ep->tstamp = 0;
         ep->length = 0;
         ep->status = error;
@@ -237,13 +309,11 @@ static struct mon_event_text *mon_text_fetch(struct mon_reader_text *rp,
 static int mon_text_open(struct inode *inode, struct file *file)
 {
         struct mon_bus *mbus;
-        struct usb_bus *ubus;
         struct mon_reader_text *rp;
         int rc;
 
         mutex_lock(&mon_lock);
         mbus = inode->i_private;
-        ubus = mbus->u_bus;
 
         rp = kzalloc(sizeof(struct mon_reader_text), GFP_KERNEL);
         if (rp == NULL) {
@@ -267,8 +337,7 @@ static int mon_text_open(struct inode *inode, struct file *file)
         rp->r.rnf_error = mon_text_error;
         rp->r.rnf_complete = mon_text_complete;
 
-        snprintf(rp->slab_name, SLAB_NAME_SZ, "mon%dt_%lx", ubus->busnum,
-            (long)rp);
+        snprintf(rp->slab_name, SLAB_NAME_SZ, "mon_text_%p", rp);
         rp->e_slab = kmem_cache_create(rp->slab_name,
             sizeof(struct mon_event_text), sizeof(long), 0,
             mon_text_ctor, NULL);
@@ -300,17 +369,75 @@ err_alloc:
  *   dd if=/dbg/usbmon/0t bs=10
  * Also, we do not allow seeks and do not bother advancing the offset.
  */
-static ssize_t mon_text_read(struct file *file, char __user *buf,
+static ssize_t mon_text_read_t(struct file *file, char __user *buf,
                                 size_t nbytes, loff_t *ppos)
 {
         struct mon_reader_text *rp = file->private_data;
+        struct mon_event_text *ep;
+        struct mon_text_ptr ptr;
+
+        if (IS_ERR(ep = mon_text_read_wait(rp, file)))
+                return PTR_ERR(ep);
+        mutex_lock(&rp->printf_lock);
+        ptr.cnt = 0;
+        ptr.pbuf = rp->printf_buf;
+        ptr.limit = rp->printf_size;
+
+        mon_text_read_head_t(rp, &ptr, ep);
+        mon_text_read_statset(rp, &ptr, ep);
+        ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
+            " %d", ep->length);
+        mon_text_read_data(rp, &ptr, ep);
+
+        if (copy_to_user(buf, rp->printf_buf, ptr.cnt))
+                ptr.cnt = -EFAULT;
+        mutex_unlock(&rp->printf_lock);
+        kmem_cache_free(rp->e_slab, ep);
+        return ptr.cnt;
+}
+
+static ssize_t mon_text_read_u(struct file *file, char __user *buf,
+                                size_t nbytes, loff_t *ppos)
+{
+        struct mon_reader_text *rp = file->private_data;
+        struct mon_event_text *ep;
+        struct mon_text_ptr ptr;
+
+        if (IS_ERR(ep = mon_text_read_wait(rp, file)))
+                return PTR_ERR(ep);
+        mutex_lock(&rp->printf_lock);
+        ptr.cnt = 0;
+        ptr.pbuf = rp->printf_buf;
+        ptr.limit = rp->printf_size;
+
+        mon_text_read_head_u(rp, &ptr, ep);
+        if (ep->type == 'E') {
+                mon_text_read_statset(rp, &ptr, ep);
+        } else if (usb_pipeisoc(ep->pipe)) {
+                mon_text_read_isostat(rp, &ptr, ep);
+                mon_text_read_isodesc(rp, &ptr, ep);
+        } else if (usb_pipeint(ep->pipe)) {
+                mon_text_read_intstat(rp, &ptr, ep);
+        } else {
+                mon_text_read_statset(rp, &ptr, ep);
+        }
+        ptr.cnt += snprintf(ptr.pbuf + ptr.cnt, ptr.limit - ptr.cnt,
+            " %d", ep->length);
+        mon_text_read_data(rp, &ptr, ep);
+
+        if (copy_to_user(buf, rp->printf_buf, ptr.cnt))
+                ptr.cnt = -EFAULT;
+        mutex_unlock(&rp->printf_lock);
+        kmem_cache_free(rp->e_slab, ep);
+        return ptr.cnt;
+}
+
+static struct mon_event_text *mon_text_read_wait(struct mon_reader_text *rp,
+    struct file *file)
+{
         struct mon_bus *mbus = rp->r.m_bus;
         DECLARE_WAITQUEUE(waita, current);
         struct mon_event_text *ep;
-        int cnt, limit;
-        char *pbuf;
-        char udir, utype;
-        int data_len, i;
 
         add_wait_queue(&rp->wait, &waita);
         set_current_state(TASK_INTERRUPTIBLE);
@@ -318,7 +445,7 @@ static ssize_t mon_text_read(struct file *file, char __user *buf,
                 if (file->f_flags & O_NONBLOCK) {
                         set_current_state(TASK_RUNNING);
                         remove_wait_queue(&rp->wait, &waita);
-                        return -EWOULDBLOCK;    /* Same as EAGAIN in Linux */
+                        return ERR_PTR(-EWOULDBLOCK);
                 }
                 /*
                  * We do not count nwaiters, because ->release is supposed
@@ -327,17 +454,19 @@ static ssize_t mon_text_read(struct file *file, char __user *buf,
                 schedule();
                 if (signal_pending(current)) {
                         remove_wait_queue(&rp->wait, &waita);
-                        return -EINTR;
+                        return ERR_PTR(-EINTR);
                 }
                 set_current_state(TASK_INTERRUPTIBLE);
         }
         set_current_state(TASK_RUNNING);
         remove_wait_queue(&rp->wait, &waita);
+        return ep;
+}
 
-        mutex_lock(&rp->printf_lock);
-        cnt = 0;
-        pbuf = rp->printf_buf;
-        limit = rp->printf_size;
+static void mon_text_read_head_t(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep)
+{
+        char udir, utype;
 
         udir = usb_pipein(ep->pipe) ? 'i' : 'o';
         switch (usb_pipetype(ep->pipe)) {
@@ -346,13 +475,38 @@ static ssize_t mon_text_read(struct file *file, char __user *buf,
         case PIPE_CONTROL:      utype = 'C'; break;
         default: /* PIPE_BULK */  utype = 'B';
         }
-        cnt += snprintf(pbuf + cnt, limit - cnt,
+        p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
             "%lx %u %c %c%c:%03u:%02u",
             ep->id, ep->tstamp, ep->type,
-            utype, udir, usb_pipedevice(ep->pipe), usb_pipeendpoint(ep->pipe));
+            utype, udir,
+            usb_pipedevice(ep->pipe), usb_pipeendpoint(ep->pipe));
+}
+
+static void mon_text_read_head_u(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep)
+{
+        char udir, utype;
+
+        udir = usb_pipein(ep->pipe) ? 'i' : 'o';
+        switch (usb_pipetype(ep->pipe)) {
+        case PIPE_ISOCHRONOUS:  utype = 'Z'; break;
+        case PIPE_INTERRUPT:    utype = 'I'; break;
+        case PIPE_CONTROL:      utype = 'C'; break;
+        default: /* PIPE_BULK */  utype = 'B';
+        }
+        p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+            "%lx %u %c %c%c:%d:%03u:%u",
+            ep->id, ep->tstamp, ep->type,
+            utype, udir,
+            ep->busnum, usb_pipedevice(ep->pipe), usb_pipeendpoint(ep->pipe));
+}
+
+static void mon_text_read_statset(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep)
+{
 
         if (ep->setup_flag == 0) {   /* Setup packet is present and captured */
-                cnt += snprintf(pbuf + cnt, limit - cnt,
+                p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
                     " s %02x %02x %04x %04x %04x",
                     ep->setup[0],
                     ep->setup[1],
@@ -360,40 +514,86 @@ static ssize_t mon_text_read(struct file *file, char __user *buf,
                     (ep->setup[5] << 8) | ep->setup[4],
                     (ep->setup[7] << 8) | ep->setup[6]);
         } else if (ep->setup_flag != '-') { /* Unable to capture setup packet */
-                cnt += snprintf(pbuf + cnt, limit - cnt,
+                p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
                     " %c __ __ ____ ____ ____", ep->setup_flag);
         } else {                     /* No setup for this kind of URB */
-                cnt += snprintf(pbuf + cnt, limit - cnt, " %d", ep->status);
+                p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+                    " %d", ep->status);
         }
-        cnt += snprintf(pbuf + cnt, limit - cnt, " %d", ep->length);
+}
+
+static void mon_text_read_intstat(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep)
+{
+        p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+            " %d:%d", ep->status, ep->interval);
+}
+
+static void mon_text_read_isostat(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep)
+{
+        if (ep->type == 'S') {
+                p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+                    " %d:%d:%d", ep->status, ep->interval, ep->start_frame);
+        } else {
+                p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+                    " %d:%d:%d:%d",
+                    ep->status, ep->interval, ep->start_frame, ep->error_count);
+        }
+}
+
+static void mon_text_read_isodesc(struct mon_reader_text *rp,
+        struct mon_text_ptr *p, const struct mon_event_text *ep)
+{
+        int ndesc;      /* Display this many */
+        int i;
+        const struct mon_iso_desc *dp;
+
+        p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+            " %d", ep->numdesc);
+        ndesc = ep->numdesc;
+        if (ndesc > ISODESC_MAX)
+                ndesc = ISODESC_MAX;
+        if (ndesc < 0)
+                ndesc = 0;
+        dp = ep->isodesc;
+        for (i = 0; i < ndesc; i++) {
+                p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+                    " %d:%u:%u", dp->status, dp->offset, dp->length);
+                dp++;
+        }
+}
+
+static void mon_text_read_data(struct mon_reader_text *rp,
+    struct mon_text_ptr *p, const struct mon_event_text *ep)
+{
+        int data_len, i;
 
         if ((data_len = ep->length) > 0) {
                 if (ep->data_flag == 0) {
-                        cnt += snprintf(pbuf + cnt, limit - cnt, " =");
+                        p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+                            " =");
                         if (data_len >= DATA_MAX)
                                 data_len = DATA_MAX;
                         for (i = 0; i < data_len; i++) {
                                 if (i % 4 == 0) {
-                                        cnt += snprintf(pbuf + cnt, limit - cnt,
+                                        p->cnt += snprintf(p->pbuf + p->cnt,
+                                            p->limit - p->cnt,
                                             " ");
                                 }
-                                cnt += snprintf(pbuf + cnt, limit - cnt,
+                                p->cnt += snprintf(p->pbuf + p->cnt,
+                                    p->limit - p->cnt,
                                     "%02x", ep->data[i]);
                         }
-                        cnt += snprintf(pbuf + cnt, limit - cnt, "\n");
+                        p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
+                            "\n");
                 } else {
-                        cnt += snprintf(pbuf + cnt, limit - cnt,
+                        p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt,
                             " %c\n", ep->data_flag);
                 }
         } else {
-                cnt += snprintf(pbuf + cnt, limit - cnt, "\n");
+                p->cnt += snprintf(p->pbuf + p->cnt, p->limit - p->cnt, "\n");
         }
-
-        if (copy_to_user(buf, rp->printf_buf, cnt))
-                cnt = -EFAULT;
-        mutex_unlock(&rp->printf_lock);
-        kmem_cache_free(rp->e_slab, ep);
-        return cnt;
 }
 
 static int mon_text_release(struct inode *inode, struct file *file)
@@ -439,34 +639,46 @@ static int mon_text_release(struct inode *inode, struct file *file)
         return 0;
 }
 
-static const struct file_operations mon_fops_text = {
+static const struct file_operations mon_fops_text_t = {
         .owner =        THIS_MODULE,
         .open =         mon_text_open,
         .llseek =       no_llseek,
-        .read =         mon_text_read,
-        /* .write =     mon_text_write, */
-        /* .poll =              mon_text_poll, */
-        /* .ioctl =     mon_text_ioctl, */
+        .read =         mon_text_read_t,
         .release =      mon_text_release,
 };
 
-int mon_text_add(struct mon_bus *mbus, const struct usb_bus *ubus)
+static const struct file_operations mon_fops_text_u = {
+        .owner =        THIS_MODULE,
+        .open =         mon_text_open,
+        .llseek =       no_llseek,
+        .read =         mon_text_read_u,
+        .release =      mon_text_release,
+};
+
+int mon_text_add(struct mon_bus *mbus, int busnum)
 {
         struct dentry *d;
         enum { NAMESZ = 10 };
         char name[NAMESZ];
         int rc;
 
-        rc = snprintf(name, NAMESZ, "%dt", ubus->busnum);
+        rc = snprintf(name, NAMESZ, "%dt", busnum);
         if (rc <= 0 || rc >= NAMESZ)
                 goto err_print_t;
-        d = debugfs_create_file(name, 0600, mon_dir, mbus, &mon_fops_text);
+        d = debugfs_create_file(name, 0600, mon_dir, mbus, &mon_fops_text_t);
         if (d == NULL)
                 goto err_create_t;
         mbus->dent_t = d;
 
-        /* XXX The stats do not belong to here (text API), but oh well... */
-        rc = snprintf(name, NAMESZ, "%ds", ubus->busnum);
+        rc = snprintf(name, NAMESZ, "%du", busnum);
+        if (rc <= 0 || rc >= NAMESZ)
+                goto err_print_u;
+        d = debugfs_create_file(name, 0600, mon_dir, mbus, &mon_fops_text_u);
+        if (d == NULL)
+                goto err_create_u;
+        mbus->dent_u = d;
+
+        rc = snprintf(name, NAMESZ, "%ds", busnum);
         if (rc <= 0 || rc >= NAMESZ)
                 goto err_print_s;
         d = debugfs_create_file(name, 0600, mon_dir, mbus, &mon_fops_stat);
@@ -478,6 +690,10 @@ int mon_text_add(struct mon_bus *mbus, const struct usb_bus *ubus)
 
 err_create_s:
 err_print_s:
+        debugfs_remove(mbus->dent_u);
+        mbus->dent_u = NULL;
+err_create_u:
+err_print_u:
         debugfs_remove(mbus->dent_t);
         mbus->dent_t = NULL;
 err_create_t:
@@ -487,6 +703,7 @@ err_print_t:
 
 void mon_text_del(struct mon_bus *mbus)
 {
+        debugfs_remove(mbus->dent_u);
         debugfs_remove(mbus->dent_t);
         debugfs_remove(mbus->dent_s);
 }
diff --git a/drivers/usb/mon/usb_mon.h b/drivers/usb/mon/usb_mon.h
index efdfd8993d9e..13d63255283e 100644
--- a/drivers/usb/mon/usb_mon.h
+++ b/drivers/usb/mon/usb_mon.h
@@ -22,7 +22,7 @@ struct mon_bus {
         int text_inited;
         struct dentry *dent_s;          /* Debugging file */
         struct dentry *dent_t;          /* Text interface file */
-        int uses_dma;
+        struct dentry *dent_u;          /* Second text interface file */
 
         /* Ref */
         int nreaders;                   /* Under mon_lock AND mbus->lock */
@@ -52,7 +52,7 @@ void mon_reader_del(struct mon_bus *mbus, struct mon_reader *r);
 
 struct mon_bus *mon_bus_lookup(unsigned int num);
 
-int /*bool*/ mon_text_add(struct mon_bus *mbus, const struct usb_bus *ubus);
+int /*bool*/ mon_text_add(struct mon_bus *mbus, int busnum);
 void mon_text_del(struct mon_bus *mbus);
 // void mon_bin_add(struct mon_bus *);
 
@@ -81,4 +81,6 @@ extern struct mutex mon_lock;
 
 extern const struct file_operations mon_fops_stat;
 
+extern struct mon_bus mon_bus0;         /* Only for redundant checks */
+
 #endif /* __USB_MON_H */
diff --git a/drivers/usb/net/asix.c b/drivers/usb/net/asix.c
index 5808ea082459..d5ef97bc4d01 100644
--- a/drivers/usb/net/asix.c
+++ b/drivers/usb/net/asix.c
@@ -298,7 +298,7 @@ static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
                 if (ax_skb) {
                         ax_skb->len = size;
                         ax_skb->data = packet;
-                        ax_skb->tail = packet + size;
+                        skb_set_tail_pointer(ax_skb, size);
                         usbnet_skb_return(dev, ax_skb);
                 } else {
                         return 0;
@@ -338,7 +338,7 @@ static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
             && ((headroom + tailroom) >= (4 + padlen))) {
                 if ((headroom < 4) || (tailroom < padlen)) {
                         skb->data = memmove(skb->head + 4, skb->data, skb->len);
-                        skb->tail = skb->data + skb->len;
+                        skb_set_tail_pointer(skb, skb->len);
                 }
         } else {
                 struct sk_buff *skb2;
@@ -352,11 +352,11 @@ static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
         skb_push(skb, 4);
         packet_len = (((skb->len - 4) ^ 0x0000ffff) << 16) + (skb->len - 4);
         cpu_to_le32s(&packet_len);
-        memcpy(skb->data, &packet_len, sizeof(packet_len));
+        skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
 
         if ((skb->len % 512) == 0) {
                 cpu_to_le32s(&padbytes);
-                memcpy( skb->tail, &padbytes, sizeof(padbytes));
+                memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
                 skb_put(skb, sizeof(padbytes));
         }
         return skb;
diff --git a/drivers/usb/net/catc.c b/drivers/usb/net/catc.c
index 4852012735f6..86e90c59d551 100644
--- a/drivers/usb/net/catc.c
+++ b/drivers/usb/net/catc.c
@@ -255,7 +255,6 @@ static void catc_rx_done(struct urb *urb)
                 if (!(skb = dev_alloc_skb(pkt_len)))
                         return;
 
-                skb->dev = catc->netdev;
                 eth_copy_and_sum(skb, pkt_start + pkt_offset, pkt_len, 0);
                 skb_put(skb, pkt_len);
 
@@ -356,7 +355,7 @@ resubmit:
  * Transmit routines.
  */
 
-static void catc_tx_run(struct catc *catc)
+static int catc_tx_run(struct catc *catc)
 {
         int status;
 
@@ -374,12 +373,14 @@ static void catc_tx_run(struct catc *catc)
         catc->tx_ptr = 0;
 
         catc->netdev->trans_start = jiffies;
+        return status;
 }
 
 static void catc_tx_done(struct urb *urb)
 {
         struct catc *catc = urb->context;
         unsigned long flags;
+        int r;
 
         if (urb->status == -ECONNRESET) {
                 dbg("Tx Reset.");
@@ -398,10 +399,13 @@ static void catc_tx_done(struct urb *urb)
 
         spin_lock_irqsave(&catc->tx_lock, flags);
 
-        if (catc->tx_ptr)
-                catc_tx_run(catc);
-        else
+        if (catc->tx_ptr) {
+                r = catc_tx_run(catc);
+                if (unlikely(r < 0))
+                        clear_bit(TX_RUNNING, &catc->flags);
+        } else {
                 clear_bit(TX_RUNNING, &catc->flags);
+        }
 
         netif_wake_queue(catc->netdev);
 
@@ -412,6 +416,7 @@ static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 {
         struct catc *catc = netdev_priv(netdev);
         unsigned long flags;
+        int r = 0;
         char *tx_buf;
 
         spin_lock_irqsave(&catc->tx_lock, flags);
@@ -419,11 +424,14 @@ static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
         catc->tx_ptr = (((catc->tx_ptr - 1) >> 6) + 1) << 6;
         tx_buf = catc->tx_buf[catc->tx_idx] + catc->tx_ptr;
         *((u16*)tx_buf) = (catc->is_f5u011) ? cpu_to_be16((u16)skb->len) : cpu_to_le16((u16)skb->len);
-        memcpy(tx_buf + 2, skb->data, skb->len);
+        skb_copy_from_linear_data(skb, tx_buf + 2, skb->len);
         catc->tx_ptr += skb->len + 2;
 
-        if (!test_and_set_bit(TX_RUNNING, &catc->flags))
-                catc_tx_run(catc);
+        if (!test_and_set_bit(TX_RUNNING, &catc->flags)) {
+                r = catc_tx_run(catc);
+                if (r < 0)
+                        clear_bit(TX_RUNNING, &catc->flags);
+        }
 
         if ((catc->is_f5u011 && catc->tx_ptr)
              || (catc->tx_ptr >= ((TX_MAX_BURST - 1) * (PKT_SZ + 2))))
@@ -431,8 +439,10 @@ static int catc_hard_start_xmit(struct sk_buff *skb, struct net_device *netdev)
 
         spin_unlock_irqrestore(&catc->tx_lock, flags);
 
-        catc->stats.tx_bytes += skb->len;
-        catc->stats.tx_packets++;
+        if (r >= 0) {
+                catc->stats.tx_bytes += skb->len;
+                catc->stats.tx_packets++;
+        }
 
         dev_kfree_skb(skb);
 
diff --git a/drivers/usb/net/dm9601.c b/drivers/usb/net/dm9601.c
index 5130cc7eb314..a67638601477 100644
--- a/drivers/usb/net/dm9601.c
+++ b/drivers/usb/net/dm9601.c
@@ -12,6 +12,7 @@
 
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/stddef.h>
 #include <linux/init.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
@@ -85,7 +86,7 @@ static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
                                usb_sndctrlpipe(dev->udev, 0),
                                DM_WRITE_REG,
                                USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
-                               value, reg, 0, 0, USB_CTRL_SET_TIMEOUT);
+                               value, reg, NULL, 0, USB_CTRL_SET_TIMEOUT);
 }
 
 static void dm_write_async_callback(struct urb *urb)
@@ -171,7 +172,7 @@ static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
 
         usb_fill_control_urb(urb, dev->udev,
                              usb_sndctrlpipe(dev->udev, 0),
-                             (void *)req, 0, 0, dm_write_async_callback, req);
+                             (void *)req, NULL, 0, dm_write_async_callback, req);
 
         status = usb_submit_urb(urb, GFP_ATOMIC);
         if (status < 0) {
diff --git a/drivers/usb/net/gl620a.c b/drivers/usb/net/gl620a.c
index d257a8e026d6..031cf5ca4dbb 100644
--- a/drivers/usb/net/gl620a.c
+++ b/drivers/usb/net/gl620a.c
@@ -157,7 +157,7 @@ genelink_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
                 if ((headroom < (4 + 4*1)) || (tailroom < padlen)) {
                         skb->data = memmove(skb->head + (4 + 4*1),
                                              skb->data, skb->len);
-                        skb->tail = skb->data + skb->len;
+                        skb_set_tail_pointer(skb, skb->len);
                 }
         } else {
                 struct sk_buff  *skb2;
diff --git a/drivers/usb/net/kaweth.c b/drivers/usb/net/kaweth.c
index de95268ae4b8..a0cc05d21a6a 100644
--- a/drivers/usb/net/kaweth.c
+++ b/drivers/usb/net/kaweth.c
@@ -636,8 +636,6 @@ static void kaweth_usb_receive(struct urb *urb)
 
                 skb_reserve(skb, 2);    /* Align IP on 16 byte boundaries */
 
-                skb->dev = net;
-
                 eth_copy_and_sum(skb, kaweth->rx_buf + 2, pkt_len, 0);
 
                 skb_put(skb, pkt_len);
diff --git a/drivers/usb/net/net1080.c b/drivers/usb/net/net1080.c
index ccebfdef4751..19bf8dae70c9 100644
--- a/drivers/usb/net/net1080.c
+++ b/drivers/usb/net/net1080.c
@@ -520,7 +520,7 @@ net1080_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
                         skb->data = memmove(skb->head
                                                 + sizeof (struct nc_header),
                                             skb->data, skb->len);
-                        skb->tail = skb->data + len;
+                        skb_set_tail_pointer(skb, len);
                         goto encapsulate;
                 }
         }
diff --git a/drivers/usb/net/pegasus.c b/drivers/usb/net/pegasus.c
index d48c024cff59..a05fd97e5bc2 100644
--- a/drivers/usb/net/pegasus.c
+++ b/drivers/usb/net/pegasus.c
@@ -316,6 +316,7 @@ static int update_eth_regs_async(pegasus_t * pegasus)
         return ret;
 }
 
+/* Returns 0 on success, error on failure */
 static int read_mii_word(pegasus_t * pegasus, __u8 phy, __u8 indx, __u16 * regd)
 {
         int i;
@@ -574,7 +575,6 @@ static void fill_skb_pool(pegasus_t * pegasus)
                  */
                 if (pegasus->rx_pool[i] == NULL)
                         return;
-                pegasus->rx_pool[i]->dev = pegasus->net;
                 skb_reserve(pegasus->rx_pool[i], 2);
         }
 }
@@ -847,10 +847,6 @@ static void intr_callback(struct urb *urb)
                  * d[0].NO_CARRIER kicks in only with failed TX.
                  * ... so monitoring with MII may be safest.
                  */
-                if (d[0] & NO_CARRIER)
-                        netif_carrier_off(net); 
-                else
-                        netif_carrier_on(net);
 
                 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */
                 pegasus->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4];
@@ -883,7 +879,7 @@ static int pegasus_start_xmit(struct sk_buff *skb, struct net_device *net)
         netif_stop_queue(net);
 
         ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16);
-        memcpy(pegasus->tx_buff + 2, skb->data, skb->len);
+        skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len);
         usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb,
                           usb_sndbulkpipe(pegasus->usb, 2),
                           pegasus->tx_buff, count,
@@ -950,7 +946,7 @@ static void set_carrier(struct net_device *net)
         pegasus_t *pegasus = netdev_priv(net);
         u16 tmp;
 
-        if (!read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
+        if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp))
                 return;
 
         if (tmp & BMSR_LSTATUS)
@@ -1408,8 +1404,10 @@ static void pegasus_disconnect(struct usb_interface *intf)
         unlink_all_urbs(pegasus);
         free_all_urbs(pegasus);
         free_skb_pool(pegasus);
-        if (pegasus->rx_skb)
+        if (pegasus->rx_skb != NULL) {
                 dev_kfree_skb(pegasus->rx_skb);
+                pegasus->rx_skb = NULL;
+        }
         free_netdev(pegasus->net);
 }
 
diff --git a/drivers/usb/net/rndis_host.c b/drivers/usb/net/rndis_host.c
index 39a21c74fdf4..980e4aaa97aa 100644
--- a/drivers/usb/net/rndis_host.c
+++ b/drivers/usb/net/rndis_host.c
@@ -253,6 +253,7 @@ struct rndis_keepalive_c {	/* IN (optionally OUT) */
  * of that mess as possible.
  */
 #define OID_802_3_PERMANENT_ADDRESS     ccpu2(0x01010101)
+#define OID_GEN_MAXIMUM_FRAME_SIZE      ccpu2(0x00010106)
 #define OID_GEN_CURRENT_PACKET_FILTER   ccpu2(0x0001010e)
 
 /*
@@ -349,7 +350,7 @@ static int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf)
                         case RNDIS_MSG_INDICATE: {      /* fault */
                                 // struct rndis_indicate *msg = (void *)buf;
                                 dev_info(&info->control->dev,
-                                         "rndis fault indication\n");
+                                        "rndis fault indication\n");
                                 }
                                 break;
                         case RNDIS_MSG_KEEPALIVE: {     /* ping */
@@ -387,6 +388,71 @@ static int rndis_command(struct usbnet *dev, struct rndis_msg_hdr *buf)
         return -ETIMEDOUT;
 }
 
+/*
+ * rndis_query:
+ *
+ * Performs a query for @oid along with 0 or more bytes of payload as
+ * specified by @in_len. If @reply_len is not set to -1 then the reply
+ * length is checked against this value, resulting in an error if it
+ * doesn't match.
+ *
+ * NOTE: Adding a payload exactly or greater than the size of the expected
+ * response payload is an evident requirement MSFT added for ActiveSync.
+ *
+ * The only exception is for OIDs that return a variably sized response,
+ * in which case no payload should be added.  This undocumented (and
+ * nonsensical!) issue was found by sniffing protocol requests from the
+ * ActiveSync 4.1 Windows driver.
+ */
+static int rndis_query(struct usbnet *dev, struct usb_interface *intf,
+                void *buf, u32 oid, u32 in_len,
+                void **reply, int *reply_len)
+{
+        int retval;
+        union {
+                void                    *buf;
+                struct rndis_msg_hdr    *header;
+                struct rndis_query      *get;
+                struct rndis_query_c    *get_c;
+        } u;
+        u32 off, len;
+
+        u.buf = buf;
+
+        memset(u.get, 0, sizeof *u.get + in_len);
+        u.get->msg_type = RNDIS_MSG_QUERY;
+        u.get->msg_len = cpu_to_le32(sizeof *u.get + in_len);
+        u.get->oid = oid;
+        u.get->len = cpu_to_le32(in_len);
+        u.get->offset = ccpu2(20);
+
+        retval = rndis_command(dev, u.header);
+        if (unlikely(retval < 0)) {
+                dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) failed, %d\n",
+                                oid, retval);
+                return retval;
+        }
+
+        off = le32_to_cpu(u.get_c->offset);
+        len = le32_to_cpu(u.get_c->len);
+        if (unlikely((8 + off + len) > CONTROL_BUFFER_SIZE))
+                goto response_error;
+
+        if (*reply_len != -1 && len != *reply_len)
+                goto response_error;
+
+        *reply = (unsigned char *) &u.get_c->request_id + off;
+        *reply_len = len;
+
+        return retval;
+
+response_error:
+        dev_err(&intf->dev, "RNDIS_MSG_QUERY(0x%08x) "
+                        "invalid response - off %d len %d\n",
+                oid, off, len);
+        return -EDOM;
+}
+
 static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
 {
         int                     retval;
@@ -403,6 +469,8 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
                 struct rndis_set_c      *set_c;
         } u;
         u32                     tmp;
+        int                     reply_len;
+        unsigned char           *bp;
 
         /* we can't rely on i/o from stack working, or stack allocation */
         u.buf = kmalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
@@ -421,6 +489,12 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
          * TX we'll stick to one Ethernet packet plus RNDIS framing.
          * For RX we handle drivers that zero-pad to end-of-packet.
          * Don't let userspace change these settings.
+         *
+         * NOTE: there still seems to be wierdness here, as if we need
+         * to do some more things to make sure WinCE targets accept this.
+         * They default to jumbograms of 8KB or 16KB, which is absurd
+         * for such low data rates and which is also more than Linux
+         * can usually expect to allocate for SKB data...
          */
         net->hard_header_len += sizeof (struct rndis_data_hdr);
         dev->hard_mtu = net->mtu + net->hard_header_len;
@@ -434,7 +508,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
         if (unlikely(retval < 0)) {
                 /* it might not even be an RNDIS device!! */
                 dev_err(&intf->dev, "RNDIS init failed, %d\n", retval);
-                goto fail_and_release;
+                goto fail_and_release;
         }
         tmp = le32_to_cpu(u.init_c->max_transfer_size);
         if (tmp < dev->hard_mtu) {
@@ -450,34 +524,15 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
                 dev->hard_mtu, tmp, dev->rx_urb_size,
                 1 << le32_to_cpu(u.init_c->packet_alignment));
 
-        /* Get designated host ethernet address.
-         *
-         * Adding a payload exactly the same size as the expected response
-         * payload is an evident requirement MSFT added for ActiveSync.
-         * This undocumented (and nonsensical) issue was found by sniffing
-         * protocol requests from the ActiveSync 4.1 Windows driver.
-         */
-        memset(u.get, 0, sizeof *u.get + 48);
-        u.get->msg_type = RNDIS_MSG_QUERY;
-        u.get->msg_len = ccpu2(sizeof *u.get + 48);
-        u.get->oid = OID_802_3_PERMANENT_ADDRESS;
-        u.get->len = ccpu2(48);
-        u.get->offset = ccpu2(20);
-
-        retval = rndis_command(dev, u.header);
-        if (unlikely(retval < 0)) {
+        /* Get designated host ethernet address */
+        reply_len = ETH_ALEN;
+        retval = rndis_query(dev, intf, u.buf, OID_802_3_PERMANENT_ADDRESS,
+                        48, (void **) &bp, &reply_len);
+        if (unlikely(retval< 0)) {
                 dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
                 goto fail_and_release;
         }
-        tmp = le32_to_cpu(u.get_c->offset);
-        if (unlikely((tmp + 8) > (CONTROL_BUFFER_SIZE - ETH_ALEN)
-                        || u.get_c->len != ccpu2(ETH_ALEN))) {
-                dev_err(&intf->dev, "rndis ethaddr off %d len %d ?\n",
-                        tmp, le32_to_cpu(u.get_c->len));
-                retval = -EDOM;
-                goto fail_and_release;
-        }
-        memcpy(net->dev_addr, tmp + (char *)&u.get_c->request_id, ETH_ALEN);
+        memcpy(net->dev_addr, bp, ETH_ALEN);
 
         /* set a nonzero filter to enable data transfers */
         memset(u.set, 0, sizeof *u.set);
@@ -502,6 +557,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
 fail_and_release:
         usb_set_intfdata(info->data, NULL);
         usb_driver_release_interface(driver_of(intf), info->data);
+        info->data = NULL;
 fail:
         kfree(u.buf);
         return retval;
@@ -588,7 +644,7 @@ rndis_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
                 if (likely((sizeof *hdr) <= room)) {
                         skb->data = memmove(skb->head + sizeof *hdr,
                                             skb->data, len);
-                        skb->tail = skb->data + len;
+                        skb_set_tail_pointer(skb, len);
                         goto fill;
                 }
         }
@@ -618,7 +674,7 @@ fill:
 
 static const struct driver_info rndis_info = {
         .description =  "RNDIS device",
-        .flags =        FLAG_ETHER | FLAG_FRAMING_RN,
+        .flags =        FLAG_ETHER | FLAG_FRAMING_RN | FLAG_NO_SETINT,
         .bind =         rndis_bind,
         .unbind =       rndis_unbind,
         .status =       rndis_status,
diff --git a/drivers/usb/net/rtl8150.c b/drivers/usb/net/rtl8150.c
index ea153dc9b0ac..fa598f0340cf 100644
--- a/drivers/usb/net/rtl8150.c
+++ b/drivers/usb/net/rtl8150.c
@@ -646,7 +646,6 @@ static void fill_skb_pool(rtl8150_t *dev)
                 if (!skb) {
                         return;
                 }
-                skb->dev = dev->netdev;
                 skb_reserve(skb, 2);
                 dev->rx_skb_pool[i] = skb;
         }
diff --git a/drivers/usb/net/usbnet.c b/drivers/usb/net/usbnet.c
index de69b183bd2f..f9cd42d058b0 100644
--- a/drivers/usb/net/usbnet.c
+++ b/drivers/usb/net/usbnet.c
@@ -203,7 +203,6 @@ void usbnet_skb_return (struct usbnet *dev, struct sk_buff *skb)
 {
         int     status;
 
-        skb->dev = dev->net;
         skb->protocol = eth_type_trans (skb, dev->net);
         dev->stats.rx_packets++;
         dev->stats.rx_bytes += skb->len;
@@ -735,8 +734,7 @@ void usbnet_get_drvinfo (struct net_device *net, struct ethtool_drvinfo *info)
 {
         struct usbnet *dev = netdev_priv(net);
 
-        /* REVISIT don't always return "usbnet" */
-        strncpy (info->driver, driver_name, sizeof info->driver);
+        strncpy (info->driver, dev->driver_name, sizeof info->driver);
         strncpy (info->version, DRIVER_VERSION, sizeof info->version);
         strncpy (info->fw_version, dev->driver_info->description,
                 sizeof info->fw_version);
@@ -1116,10 +1114,12 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
         struct driver_info              *info;
         struct usb_device               *xdev;
         int                             status;
+        const char                      *name;
 
+        name = udev->dev.driver->name;
         info = (struct driver_info *) prod->driver_info;
         if (!info) {
-                dev_dbg (&udev->dev, "blacklisted by %s\n", driver_name);
+                dev_dbg (&udev->dev, "blacklisted by %s\n", name);
                 return -ENODEV;
         }
         xdev = interface_to_usbdev (udev);
@@ -1139,6 +1139,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
         dev = netdev_priv(net);
         dev->udev = xdev;
         dev->driver_info = info;
+        dev->driver_name = name;
         dev->msg_enable = netif_msg_init (msg_level, NETIF_MSG_DRV
                                 | NETIF_MSG_PROBE | NETIF_MSG_LINK);
         skb_queue_head_init (&dev->rxq);
diff --git a/drivers/usb/net/usbnet.h b/drivers/usb/net/usbnet.h
index 07c70abbe0ec..cbb53e065d6c 100644
--- a/drivers/usb/net/usbnet.h
+++ b/drivers/usb/net/usbnet.h
@@ -29,6 +29,7 @@ struct usbnet {
         /* housekeeping */
         struct usb_device       *udev;
         struct driver_info      *driver_info;
+        const char              *driver_name;
         wait_queue_head_t       *wait;
         struct mutex            phy_mutex;
 
diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index 2f4d303ee36f..ba5d1dc03036 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -423,11 +423,11 @@ config USB_SERIAL_MCT_U232
           module will be called mct_u232.
 
 config USB_SERIAL_MOS7720
-        tristate "USB Moschip 7720 Single Port Serial Driver"
+        tristate "USB Moschip 7720 Serial Driver"
         depends on USB_SERIAL
         ---help---
-          Say Y here if you want to use a USB Serial single port adapter from
-          Moschip Semiconductor Tech.
+          Say Y here if you want to use USB Serial single and double
+          port adapters from Moschip Semiconductor Tech.
 
           To compile this driver as a module, choose M here: the
           module will be called mos7720.
diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c
index 11dad42c3c60..b675735bfbee 100644
--- a/drivers/usb/serial/aircable.c
+++ b/drivers/usb/serial/aircable.c
@@ -209,6 +209,7 @@ static void aircable_send(struct usb_serial_port *port)
         int count, result;
         struct aircable_private *priv = usb_get_serial_port_data(port);
         unsigned char* buf;
+        u16 *dbuf;
         dbg("%s - port %d", __FUNCTION__, port->number);
         if (port->write_urb_busy)
                 return;
@@ -226,8 +227,8 @@ static void aircable_send(struct usb_serial_port *port)
 
         buf[0] = TX_HEADER_0;
         buf[1] = TX_HEADER_1;
-        buf[2] = (unsigned char)count;
-        buf[3] = (unsigned char)(count >> 8);
+        dbuf = (u16 *)&buf[2];
+        *dbuf = cpu_to_le16((u16)count);
         serial_buf_get(priv->tx_buf,buf + HCI_HEADER_LENGTH, MAX_HCI_FRAMESIZE);
 
         memcpy(port->write_urb->transfer_buffer, buf,
@@ -434,7 +435,7 @@ static void aircable_write_bulk_callback(struct urb *urb)
                             __FUNCTION__, urb->status);
                         port->write_urb->transfer_buffer_length = 1;
                         port->write_urb->dev = port->serial->dev;
-                        result = usb_submit_urb(port->write_urb, GFP_KERNEL);
+                        result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
                         if (result)
                                 dev_err(&urb->dev->dev,
                                         "%s - failed resubmitting write urb, error %d\n",
diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
index edd685791a6b..ea2175bb2274 100644
--- a/drivers/usb/serial/ark3116.c
+++ b/drivers/usb/serial/ark3116.c
@@ -341,7 +341,7 @@ static int ark3116_open(struct usb_serial_port *port, struct file *filp)
 
         result = usb_serial_generic_open(port, filp);
         if (result)
-                return result;
+                goto err_out;
 
         /* open */
         ARK3116_RCV(serial, 111, 0xFE, 0xC0, 0x0000, 0x0003, 0x02, buf);
@@ -372,6 +372,7 @@ static int ark3116_open(struct usb_serial_port *port, struct file *filp)
         if (port->tty)
                 ark3116_set_termios(port, &tmp_termios);
 
+err_out:
         kfree(buf);
 
         return result;
diff --git a/drivers/usb/serial/cp2101.c b/drivers/usb/serial/cp2101.c
index d7d0ba986a80..e831cb7f64fd 100644
--- a/drivers/usb/serial/cp2101.c
+++ b/drivers/usb/serial/cp2101.c
@@ -58,9 +58,11 @@ static struct usb_device_id id_table [] = {
         { USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */
         { USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */
         { USB_DEVICE(0x10C4, 0x803B) }, /* Pololu USB-serial converter */
+        { USB_DEVICE(0x10C4, 0x8053) }, /* Enfora EDG1228 */
         { USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */
         { USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */
         { USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */
+        { USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */
         { USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */
         { USB_DEVICE(0x10C4, 0x813D) }, /* Burnside Telecom Deskmobile */
         { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 8ff9d54b21e6..95a1805b064f 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -342,6 +342,7 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(FTDI_VID, FTDI_PERLE_ULTRAPORT_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_PIEGROUP_PID) },
         { USB_DEVICE(FTDI_VID, FTDI_TNC_X_PID) },
+        { USB_DEVICE(FTDI_VID, FTDI_USBX_707_PID) },
         { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2101_PID) },
         { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2102_PID) },
         { USB_DEVICE(SEALEVEL_VID, SEALEVEL_2103_PID) },
@@ -1433,6 +1434,7 @@ static int ftdi_write (struct usb_serial_port *port,
                 dbg("%s - write limit hit\n", __FUNCTION__);
                 return 0;
         }
+        priv->tx_outstanding_urbs++;
         spin_unlock_irqrestore(&priv->tx_lock, flags);
 
         data_offset = priv->write_offset;
@@ -1450,14 +1452,15 @@ static int ftdi_write (struct usb_serial_port *port,
         buffer = kmalloc (transfer_size, GFP_ATOMIC);
         if (!buffer) {
                 err("%s ran out of kernel memory for urb ...", __FUNCTION__);
-                return -ENOMEM;
+                count = -ENOMEM;
+                goto error_no_buffer;
         }
 
         urb = usb_alloc_urb(0, GFP_ATOMIC);
         if (!urb) {
                 err("%s - no more free urbs", __FUNCTION__);
-                kfree (buffer);
-                return -ENOMEM;
+                count = -ENOMEM;
+                goto error_no_urb;
         }
 
         /* Copy data */
@@ -1499,10 +1502,9 @@ static int ftdi_write (struct usb_serial_port *port,
         if (status) {
                 err("%s - failed submitting write urb, error %d", __FUNCTION__, status);
                 count = status;
-                kfree (buffer);
+                goto error;
         } else {
                 spin_lock_irqsave(&priv->tx_lock, flags);
-                ++priv->tx_outstanding_urbs;
                 priv->tx_outstanding_bytes += count;
                 priv->tx_bytes += count;
                 spin_unlock_irqrestore(&priv->tx_lock, flags);
@@ -1510,10 +1512,19 @@ static int ftdi_write (struct usb_serial_port *port,
 
         /* we are done with this urb, so let the host driver
          * really free it when it is finished with it */
-        usb_free_urb (urb);
+        usb_free_urb(urb);
 
         dbg("%s write returning: %d", __FUNCTION__, count);
         return count;
+error:
+        usb_free_urb(urb);
+error_no_urb:
+        kfree (buffer);
+error_no_buffer:
+        spin_lock_irqsave(&priv->tx_lock, flags);
+        priv->tx_outstanding_urbs--;
+        spin_unlock_irqrestore(&priv->tx_lock, flags);
+        return count;
 } /* ftdi_write */
 
 
diff --git a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h
index 513cfe1b768b..77ad0a09b384 100644
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -31,6 +31,7 @@
 #define FTDI_RELAIS_PID 0xFA10  /* Relais device from Rudolf Gugler */
 #define FTDI_NF_RIC_VID 0x0DCD  /* Vendor Id */
 #define FTDI_NF_RIC_PID 0x0001  /* Product Id */
+#define FTDI_USBX_707_PID 0xF857        /* ADSTech IR Blaster USBX-707 */
 
 
 /* www.canusb.com Lawicel CANUSB device */
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index 6a26a2e683a6..18f74ac76565 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -111,7 +111,7 @@ struct edgeport_port {
 
         struct TxFifo           txfifo;                 /* transmit fifo -- size will be maxTxCredits */
         struct urb              *write_urb;             /* write URB for this port */
-        char                    write_in_progress;      /* TRUE while a write URB is outstanding */
+        bool                    write_in_progress;      /* 'true' while a write URB is outstanding */
         spinlock_t              ep_lock;
 
         __u8                    shadowLCR;              /* last LCR value received */
@@ -123,11 +123,11 @@ struct edgeport_port {
         __u8                    validDataMask;
         __u32                   baudRate;
 
-        char                    open;
-        char                    openPending;
-        char                    commandPending;
-        char                    closePending;
-        char                    chaseResponsePending;
+        bool                    open;
+        bool                    openPending;
+        bool                    commandPending;
+        bool                    closePending;
+        bool                    chaseResponsePending;
 
         wait_queue_head_t       wait_chase;             /* for handling sleeping while waiting for chase to finish */
         wait_queue_head_t       wait_open;              /* for handling sleeping while waiting for open to finish */
@@ -156,7 +156,7 @@ struct edgeport_serial {
         __u8                    bulk_in_endpoint;               /* the bulk in endpoint handle */
         unsigned char *         bulk_in_buffer;                 /* the buffer we use for the bulk in endpoint */
         struct urb *            read_urb;                       /* our bulk read urb */
-        int                     read_in_progress;
+        bool                    read_in_progress;
         spinlock_t              es_lock;
 
         __u8                    bulk_out_endpoint;              /* the bulk out endpoint handle */
@@ -212,7 +212,7 @@ static int debug;
 
 static int low_latency = 1;     /* tty low latency flag, on by default */
 
-static int CmdUrbs = 0;         /* Number of outstanding Command Write Urbs */
+static atomic_t CmdUrbs;                /* Number of outstanding Command Write Urbs */
 
 
 /* local function prototypes */
@@ -631,14 +631,14 @@ static void edge_interrupt_callback (struct urb *urb)
                                 if (edge_serial->rxBytesAvail > 0 &&
                                     !edge_serial->read_in_progress) {
                                         dbg("%s - posting a read", __FUNCTION__);
-                                        edge_serial->read_in_progress = TRUE;
+                                        edge_serial->read_in_progress = true;
 
                                         /* we have pending bytes on the bulk in pipe, send a request */
                                         edge_serial->read_urb->dev = edge_serial->serial->dev;
                                         result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
                                         if (result) {
                                                 dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__, result);
-                                                edge_serial->read_in_progress = FALSE;
+                                                edge_serial->read_in_progress = false;
                                         }
                                 }
                                 spin_unlock(&edge_serial->es_lock);
@@ -695,13 +695,13 @@ static void edge_bulk_in_callback (struct urb *urb)
 
         if (urb->status) {
                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
-                edge_serial->read_in_progress = FALSE;
+                edge_serial->read_in_progress = false;
                 return;
         }
 
         if (urb->actual_length == 0) {
                 dbg("%s - read bulk callback with no data", __FUNCTION__);
-                edge_serial->read_in_progress = FALSE;
+                edge_serial->read_in_progress = false;
                 return;
         }
 
@@ -725,10 +725,10 @@ static void edge_bulk_in_callback (struct urb *urb)
                 status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
                 if (status) {
                         dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status);
-                        edge_serial->read_in_progress = FALSE;
+                        edge_serial->read_in_progress = false;
                 }
         } else {
-                edge_serial->read_in_progress = FALSE;
+                edge_serial->read_in_progress = false;
         }
 
         spin_unlock(&edge_serial->es_lock);
@@ -759,7 +759,7 @@ static void edge_bulk_out_data_callback (struct urb *urb)
         }
 
         // Release the Write URB
-        edge_port->write_in_progress = FALSE;
+        edge_port->write_in_progress = false;
 
         // Check if more data needs to be sent
         send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port);
@@ -779,8 +779,8 @@ static void edge_bulk_out_cmd_callback (struct urb *urb)
 
         dbg("%s", __FUNCTION__);
 
-        CmdUrbs--;
-        dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
+        atomic_dec(&CmdUrbs);
+        dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, atomic_read(&CmdUrbs));
 
 
         /* clean up the transfer buffer */
@@ -802,7 +802,7 @@ static void edge_bulk_out_cmd_callback (struct urb *urb)
                 tty_wakeup(tty);
 
         /* we have completed the command */
-        edge_port->commandPending = FALSE;
+        edge_port->commandPending = false;
         wake_up(&edge_port->wait_command);
 }
 
@@ -868,7 +868,7 @@ static int edge_open (struct usb_serial_port *port, struct file * filp)
                                   port0->bulk_in_buffer,
                                   edge_serial->read_urb->transfer_buffer_length,
                                   edge_bulk_in_callback, edge_serial);
-                edge_serial->read_in_progress = FALSE;
+                edge_serial->read_in_progress = false;
 
                 /* start interrupt read for this edgeport
                  * this interrupt will continue as long as the edgeport is connected */
@@ -890,26 +890,26 @@ static int edge_open (struct usb_serial_port *port, struct file * filp)
         /* initialize our port settings */
         edge_port->txCredits            = 0;                    /* Can't send any data yet */
         edge_port->shadowMCR            = MCR_MASTER_IE;        /* Must always set this bit to enable ints! */
-        edge_port->chaseResponsePending = FALSE;
+        edge_port->chaseResponsePending = false;
 
         /* send a open port command */
-        edge_port->openPending = TRUE;
-        edge_port->open        = FALSE;
+        edge_port->openPending = true;
+        edge_port->open        = false;
         response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0);
 
         if (response < 0) {
                 dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__);
-                edge_port->openPending = FALSE;
+                edge_port->openPending = false;
                 return -ENODEV;
         }
 
         /* now wait for the port to be completely opened */
-        wait_event_timeout(edge_port->wait_open, (edge_port->openPending != TRUE), OPEN_TIMEOUT);
+        wait_event_timeout(edge_port->wait_open, !edge_port->openPending, OPEN_TIMEOUT);
 
-        if (edge_port->open == FALSE) {
+        if (!edge_port->open) {
                 /* open timed out */
                 dbg("%s - open timedout", __FUNCTION__);
-                edge_port->openPending = FALSE;
+                edge_port->openPending = false;
                 return -ENODEV;
         }
 
@@ -928,7 +928,7 @@ static int edge_open (struct usb_serial_port *port, struct file * filp)
 
         /* Allocate a URB for the write */
         edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL);
-        edge_port->write_in_progress = FALSE;
+        edge_port->write_in_progress = false;
 
         if (!edge_port->write_urb) {
                 dbg("%s - no memory", __FUNCTION__);
@@ -966,7 +966,7 @@ static void block_until_chase_response(struct edgeport_port *edge_port)
                 lastCredits = edge_port->txCredits;
 
                 // Did we get our Chase response
-                if (edge_port->chaseResponsePending == FALSE) {
+                if (!edge_port->chaseResponsePending) {
                         dbg("%s - Got Chase Response", __FUNCTION__);
 
                         // did we get all of our credit back?
@@ -985,7 +985,7 @@ static void block_until_chase_response(struct edgeport_port *edge_port)
                         // No activity.. count down.
                         loop--;
                         if (loop == 0) {
-                                edge_port->chaseResponsePending = FALSE;
+                                edge_port->chaseResponsePending = false;
                                 dbg("%s - Chase TIMEOUT", __FUNCTION__);
                                 return;
                         }
@@ -1068,13 +1068,13 @@ static void edge_close (struct usb_serial_port *port, struct file * filp)
         // block until tx is empty
         block_until_tx_empty(edge_port);
 
-        edge_port->closePending = TRUE;
+        edge_port->closePending = true;
 
         if ((!edge_serial->is_epic) ||
             ((edge_serial->is_epic) &&
              (edge_serial->epic_descriptor.Supports.IOSPChase))) {
                 /* flush and chase */
-                edge_port->chaseResponsePending = TRUE;
+                edge_port->chaseResponsePending = true;
 
                 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
                 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
@@ -1082,7 +1082,7 @@ static void edge_close (struct usb_serial_port *port, struct file * filp)
                         // block until chase finished
                         block_until_chase_response(edge_port);
                 } else {
-                        edge_port->chaseResponsePending = FALSE;
+                        edge_port->chaseResponsePending = false;
                 }
         }
 
@@ -1094,10 +1094,10 @@ static void edge_close (struct usb_serial_port *port, struct file * filp)
                 send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
         }
 
-        //port->close = TRUE;
-        edge_port->closePending = FALSE;
-        edge_port->open = FALSE;
-        edge_port->openPending = FALSE;
+        //port->close = true;
+        edge_port->closePending = false;
+        edge_port->open = false;
+        edge_port->openPending = false;
 
         usb_kill_urb(edge_port->write_urb);
 
@@ -1247,7 +1247,7 @@ static void send_more_port_data(struct edgeport_serial *edge_serial, struct edge
         }
 
         // lock this write
-        edge_port->write_in_progress = TRUE;
+        edge_port->write_in_progress = true;
 
         // get a pointer to the write_urb
         urb = edge_port->write_urb;
@@ -1261,7 +1261,7 @@ static void send_more_port_data(struct edgeport_serial *edge_serial, struct edge
         buffer = kmalloc (count+2, GFP_ATOMIC);
         if (buffer == NULL) {
                 dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__);
-                edge_port->write_in_progress = FALSE;
+                edge_port->write_in_progress = false;
                 goto exit_send;
         }
         buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
@@ -1301,7 +1301,7 @@ static void send_more_port_data(struct edgeport_serial *edge_serial, struct edge
         if (status) {
                 /* something went wrong */
                 dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__, status);
-                edge_port->write_in_progress = FALSE;
+                edge_port->write_in_progress = false;
 
                 /* revert the credits as something bad happened. */
                 edge_port->txCredits += count;
@@ -1332,7 +1332,7 @@ static int edge_write_room (struct usb_serial_port *port)
 
         if (edge_port == NULL)
                 return -ENODEV;
-        if (edge_port->closePending == TRUE)
+        if (edge_port->closePending)
                 return -ENODEV;
 
         dbg("%s - port %d", __FUNCTION__, port->number);
@@ -1371,7 +1371,7 @@ static int edge_chars_in_buffer (struct usb_serial_port *port)
 
         if (edge_port == NULL)
                 return -ENODEV;
-        if (edge_port->closePending == TRUE)
+        if (edge_port->closePending)
                 return -ENODEV;
 
         if (!edge_port->open) {
@@ -1762,7 +1762,7 @@ static void edge_break (struct usb_serial_port *port, int break_state)
             ((edge_serial->is_epic) &&
              (edge_serial->epic_descriptor.Supports.IOSPChase))) {
                 /* flush and chase */
-                edge_port->chaseResponsePending = TRUE;
+                edge_port->chaseResponsePending = true;
 
                 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
                 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
@@ -1770,7 +1770,7 @@ static void edge_break (struct usb_serial_port *port, int break_state)
                         // block until chase finished
                         block_until_chase_response(edge_port);
                 } else {
-                        edge_port->chaseResponsePending = FALSE;
+                        edge_port->chaseResponsePending = false;
                 }
         }
 
@@ -1952,13 +1952,13 @@ static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2
                                 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
                                 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
                                 // like wait longer in block_until_chase_response, but for now we don't. 
-                                edge_port->chaseResponsePending = FALSE;
+                                edge_port->chaseResponsePending = false;
                                 wake_up (&edge_port->wait_chase);
                                 return;
 
                         case IOSP_EXT_STATUS_RX_CHECK_RSP:
                                 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 );
-                                //Port->RxCheckRsp = TRUE;
+                                //Port->RxCheckRsp = true;
                                 return;
                 }
         }
@@ -1974,8 +1974,8 @@ static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2
                         change_port_settings (edge_port, edge_port->port->tty->termios);
 
                 /* we have completed the open */
-                edge_port->openPending = FALSE;
-                edge_port->open = TRUE;
+                edge_port->openPending = false;
+                edge_port->open = true;
                 wake_up(&edge_port->wait_open);
                 return;
         }
@@ -1983,7 +1983,7 @@ static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2
         // If port is closed, silently discard all rcvd status. We can
         // have cases where buffered status is received AFTER the close
         // port command is sent to the Edgeport.
-        if ((!edge_port->open ) || (edge_port->closePending)) {
+        if (!edge_port->open || edge_port->closePending) {
                 return;
         }
 
@@ -1991,14 +1991,14 @@ static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2
                 // Not currently sent by Edgeport
                 case IOSP_STATUS_LSR:
                         dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
-                        handle_new_lsr (edge_port, FALSE, byte2, 0);
+                        handle_new_lsr(edge_port, false, byte2, 0);
                         break;
 
                 case IOSP_STATUS_LSR_DATA:
                         dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
                         // byte2 is LSR Register
                         // byte3 is broken data byte
-                        handle_new_lsr (edge_port, TRUE, byte2, byte3);
+                        handle_new_lsr(edge_port, true, byte2, byte3);
                         break;
                         //
                         //      case IOSP_EXT_4_STATUS:
@@ -2317,14 +2317,14 @@ static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer
         if (!urb)
                 return -ENOMEM;
 
-        CmdUrbs++;
-        dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
+        atomic_inc(&CmdUrbs);
+        dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, atomic_read(&CmdUrbs));
 
         usb_fill_bulk_urb (urb, edge_serial->serial->dev, 
                        usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
                        buffer, length, edge_bulk_out_cmd_callback, edge_port);
 
-        edge_port->commandPending = TRUE;
+        edge_port->commandPending = true;
         status = usb_submit_urb(urb, GFP_ATOMIC);
 
         if (status) {
@@ -2332,16 +2332,16 @@ static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer
                 dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__, status);
                 usb_kill_urb(urb);
                 usb_free_urb(urb);
-                CmdUrbs--;
+                atomic_dec(&CmdUrbs);
                 return status;
         }
 
         // wait for command to finish
         timeout = COMMAND_TIMEOUT;
 #if 0
-        wait_event (&edge_port->wait_command, (edge_port->commandPending == FALSE));
+        wait_event (&edge_port->wait_command, !edge_port->commandPending);
 
-        if (edge_port->commandPending == TRUE) {
+        if (edge_port->commandPending) {
                 /* command timed out */
                 dbg("%s - command timed out", __FUNCTION__);
                 status = -EINVAL;
@@ -2524,8 +2524,8 @@ static void change_port_settings (struct edgeport_port *edge_port, struct ktermi
 
         dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
 
-        if ((!edge_port->open) &&
-            (!edge_port->openPending)) {
+        if (!edge_port->open &&
+            !edge_port->openPending) {
                 dbg("%s - port not opened", __FUNCTION__);
                 return;
         }
@@ -2836,9 +2836,9 @@ static int edge_startup (struct usb_serial *serial)
         struct usb_device *dev;
         int i, j;
         int response;
-        int interrupt_in_found;
-        int bulk_in_found;
-        int bulk_out_found;
+        bool interrupt_in_found;
+        bool bulk_in_found;
+        bool bulk_out_found;
         static __u32 descriptor[3] = {  EDGE_COMPATIBILITY_MASK0,
                                         EDGE_COMPATIBILITY_MASK1,
                                         EDGE_COMPATIBILITY_MASK2 };
@@ -2936,14 +2936,14 @@ static int edge_startup (struct usb_serial *serial)
         if (edge_serial->is_epic) {
                 /* EPIC thing, set up our interrupt polling now and our read urb, so
                  * that the device knows it really is connected. */
-                interrupt_in_found = bulk_in_found = bulk_out_found = FALSE;
+                interrupt_in_found = bulk_in_found = bulk_out_found = false;
                 for (i = 0; i < serial->interface->altsetting[0].desc.bNumEndpoints; ++i) {
                         struct usb_endpoint_descriptor *endpoint;
                         int buffer_size;
 
                         endpoint = &serial->interface->altsetting[0].endpoint[i].desc;
                         buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
-                        if ((!interrupt_in_found) &&
+                        if (!interrupt_in_found &&
                             (usb_endpoint_is_int_in(endpoint))) {
                                 /* we found a interrupt in endpoint */
                                 dbg("found interrupt in");
@@ -2972,10 +2972,10 @@ static int edge_startup (struct usb_serial *serial)
                                                  edge_serial,
                                                  endpoint->bInterval);
 
-                                interrupt_in_found = TRUE;
+                                interrupt_in_found = true;
                         }
 
-                        if ((!bulk_in_found) &&
+                        if (!bulk_in_found &&
                             (usb_endpoint_is_bulk_in(endpoint))) {
                                 /* we found a bulk in endpoint */
                                 dbg("found bulk in");
@@ -3001,19 +3001,19 @@ static int edge_startup (struct usb_serial *serial)
                                                   endpoint->wMaxPacketSize,
                                                   edge_bulk_in_callback,
                                                   edge_serial);
-                                bulk_in_found = TRUE;
+                                bulk_in_found = true;
                         }
 
-                        if ((!bulk_out_found) &&
+                        if (!bulk_out_found &&
                             (usb_endpoint_is_bulk_out(endpoint))) {
                                 /* we found a bulk out endpoint */
                                 dbg("found bulk out");
                                 edge_serial->bulk_out_endpoint = endpoint->bEndpointAddress;
-                                bulk_out_found = TRUE;
+                                bulk_out_found = true;
                         }
                 }
 
-                if ((!interrupt_in_found) || (!bulk_in_found) || (!bulk_out_found)) {
+                if (!interrupt_in_found || !bulk_in_found || !bulk_out_found) {
                         err ("Error - the proper endpoints were not found!");
                         return -ENODEV;
                 }
@@ -3083,6 +3083,7 @@ static int __init edgeport_init(void)
         retval = usb_register(&io_driver);
         if (retval) 
                 goto failed_usb_register;
+        atomic_set(&CmdUrbs, 0);
         info(DRIVER_DESC " " DRIVER_VERSION);
         return 0;
 
diff --git a/drivers/usb/serial/io_edgeport.h b/drivers/usb/serial/io_edgeport.h
index 29a913a6daca..cb201c1f67f9 100644
--- a/drivers/usb/serial/io_edgeport.h
+++ b/drivers/usb/serial/io_edgeport.h
@@ -19,12 +19,6 @@
 #define MAX_RS232_PORTS         8       /* Max # of RS-232 ports per device */
 
 /* typedefs that the insideout headers need */
-#ifndef TRUE
-        #define TRUE            (1)
-#endif
-#ifndef FALSE
-        #define FALSE           (0)
-#endif
 #ifndef LOW8
         #define LOW8(a)         ((unsigned char)(a & 0xff))
 #endif
diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c
index d16e2e1764ad..4df0ec74e0b1 100644
--- a/drivers/usb/serial/ipaq.c
+++ b/drivers/usb/serial/ipaq.c
@@ -255,6 +255,7 @@ static struct usb_device_id ipaq_id_table [] = {
         { USB_DEVICE(0x04DD, 0x9102) }, /* SHARP WS003SH USB Modem */
         { USB_DEVICE(0x04DD, 0x9121) }, /* SHARP WS004SH USB Modem */
         { USB_DEVICE(0x04DD, 0x9123) }, /* SHARP WS007SH USB Modem */
+        { USB_DEVICE(0x04DD, 0x9151) }, /* SHARP S01SH USB Modem */
         { USB_DEVICE(0x04E8, 0x5F00) }, /* Samsung NEXiO USB Sync */
         { USB_DEVICE(0x04E8, 0x5F01) }, /* Samsung NEXiO USB Sync */
         { USB_DEVICE(0x04E8, 0x5F02) }, /* Samsung NEXiO USB Sync */
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index b2097c45a235..7b085f334ceb 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -238,7 +238,7 @@ static int klsi_105_get_line_state(struct usb_serial_port *port,
         if (rc < 0)
                 err("Reading line status failed (error = %d)", rc);
         else {
-                status = status_buf[0] + (status_buf[1]<<8);
+                status = le16_to_cpu(*(u16 *)status_buf);
 
                 info("%s - read status %x %x", __FUNCTION__,
                      status_buf[0], status_buf[1]);
@@ -257,7 +257,7 @@ static int klsi_105_get_line_state(struct usb_serial_port *port,
 static int klsi_105_startup (struct usb_serial *serial)
 {
         struct klsi_105_private *priv;
-        int i;
+        int i, j;
 
         /* check if we support the product id (see keyspan.c)
          * FIXME
@@ -265,12 +265,12 @@ static int klsi_105_startup (struct usb_serial *serial)
 
         /* allocate the private data structure */
         for (i=0; i<serial->num_ports; i++) {
-                int j;
                 priv = kmalloc(sizeof(struct klsi_105_private),
                                                    GFP_KERNEL);
                 if (!priv) {
                         dbg("%skmalloc for klsi_105_private failed.", __FUNCTION__);
-                        return -ENOMEM;
+                        i--;
+                        goto err_cleanup;
                 }
                 /* set initial values for control structures */
                 priv->cfg.pktlen    = 5;
@@ -292,15 +292,14 @@ static int klsi_105_startup (struct usb_serial *serial)
                         priv->write_urb_pool[j] = urb;
                         if (urb == NULL) {
                                 err("No more urbs???");
-                                continue;
+                                goto err_cleanup;
                         }
 
-                        urb->transfer_buffer = NULL;
                         urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE,
                                                         GFP_KERNEL);
                         if (!urb->transfer_buffer) {
                                 err("%s - out of memory for urb buffers.", __FUNCTION__);
-                                continue;
+                                goto err_cleanup;
                         }
                 }
 
@@ -308,7 +307,20 @@ static int klsi_105_startup (struct usb_serial *serial)
                 init_waitqueue_head(&serial->port[i]->write_wait);
         }
         
-        return (0);
+        return 0;
+
+err_cleanup:
+        for (; i >= 0; i--) {
+                priv = usb_get_serial_port_data(serial->port[i]);
+                for (j=0; j < NUM_URBS; j++) {
+                        if (priv->write_urb_pool[j]) {
+                                kfree(priv->write_urb_pool[j]->transfer_buffer);
+                                usb_free_urb(priv->write_urb_pool[j]);
+                        }
+                }
+                usb_set_serial_port_data(serial->port[i], NULL);
+        }
+        return -ENOMEM;
 } /* klsi_105_startup */
 
 
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index 4cd839b1407f..3db1adc25f84 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -438,17 +438,21 @@ static int  mct_u232_open (struct usb_serial_port *port, struct file *filp)
         if (retval) {
                 err("usb_submit_urb(read bulk) failed pipe 0x%x err %d",
                     port->read_urb->pipe, retval);
-                goto exit;
+                goto error;
         }
 
         port->interrupt_in_urb->dev = port->serial->dev;
         retval = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
-        if (retval)
+        if (retval) {
+                usb_kill_urb(port->read_urb);
                 err(" usb_submit_urb(read int) failed pipe 0x%x err %d",
                     port->interrupt_in_urb->pipe, retval);
-
-exit:
+                goto error;
+        }
         return 0;
+
+error:
+        return retval;
 } /* mct_u232_open */
 
 
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index 19bf403f9db2..b563e2ad8728 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -103,11 +103,9 @@ static void mos7720_interrupt_callback(struct urb *urb)
 {
         int result;
         int length;
-        __u32 *data;
-        unsigned int status;
+        __u8 *data;
         __u8 sp1;
         __u8 sp2;
-        __u8 st;
 
         dbg("%s"," : Entering\n");
 
@@ -141,18 +139,19 @@ static void mos7720_interrupt_callback(struct urb *urb)
          * Byte 2 IIR Port 2 (port.number is 1)
          * Byte 3 --------------
          * Byte 4 FIFO status for both */
-        if (length && length > 4) {
+
+        /* the above description is inverted
+         *      oneukum 2007-03-14 */
+
+        if (unlikely(length != 4)) {
                 dbg("Wrong data !!!");
                 return;
         }
 
-        status = *data;
-
-        sp1 = (status & 0xff000000)>>24;
-        sp2 = (status & 0x00ff0000)>>16;
-        st = status & 0x000000ff;
+        sp1 = data[3];
+        sp2 = data[2];
 
-        if ((sp1 & 0x01) || (sp2 & 0x01)) {
+        if ((sp1 | sp2) & 0x01) {
                 /* No Interrupt Pending in both the ports */
                 dbg("No Interrupt !!!");
         } else {
@@ -333,6 +332,7 @@ static int mos7720_open(struct usb_serial_port *port, struct file * filp)
         int response;
         int port_number;
         char data;
+        int allocated_urbs = 0;
         int j;
 
         serial = port->serial;
@@ -353,7 +353,7 @@ static int mos7720_open(struct usb_serial_port *port, struct file * filp)
 
         /* Initialising the write urb pool */
         for (j = 0; j < NUM_URBS; ++j) {
-                urb = usb_alloc_urb(0,GFP_ATOMIC);
+                urb = usb_alloc_urb(0,GFP_KERNEL);
                 mos7720_port->write_urb_pool[j] = urb;
 
                 if (urb == NULL) {
@@ -365,10 +365,16 @@ static int mos7720_open(struct usb_serial_port *port, struct file * filp)
                                                GFP_KERNEL);
                 if (!urb->transfer_buffer) {
                         err("%s-out of memory for urb buffers.", __FUNCTION__);
+                        usb_free_urb(mos7720_port->write_urb_pool[j]);
+                        mos7720_port->write_urb_pool[j] = NULL;
                         continue;
                 }
+                allocated_urbs++;
         }
 
+        if (!allocated_urbs)
+                return -ENOMEM;
+
          /* Initialize MCS7720 -- Write Init values to corresponding Registers
           *
           * Register Index
@@ -526,7 +532,7 @@ static int mos7720_chars_in_buffer(struct usb_serial_port *port)
         }
 
         for (i = 0; i < NUM_URBS; ++i) {
-                if (mos7720_port->write_urb_pool[i]->status == -EINPROGRESS)
+                if (mos7720_port->write_urb_pool[i] && mos7720_port->write_urb_pool[i]->status == -EINPROGRESS)
                         chars += URB_TRANSFER_BUFFER_SIZE;
         }
         dbg("%s - returns %d", __FUNCTION__, chars);
@@ -629,7 +635,7 @@ static int mos7720_write_room(struct usb_serial_port *port)
         }
 
         for (i = 0; i < NUM_URBS; ++i) {
-                if (mos7720_port->write_urb_pool[i]->status != -EINPROGRESS)
+                if (mos7720_port->write_urb_pool[i] && mos7720_port->write_urb_pool[i]->status != -EINPROGRESS)
                         room += URB_TRANSFER_BUFFER_SIZE;
         }
 
@@ -664,7 +670,7 @@ static int mos7720_write(struct usb_serial_port *port,
         urb = NULL;
 
         for (i = 0; i < NUM_URBS; ++i) {
-                if (mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) {
+                if (mos7720_port->write_urb_pool[i] && mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) {
                         urb = mos7720_port->write_urb_pool[i];
                         dbg("URB:%d",i);
                         break;
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index c6cca859af45..2366e7b63ece 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -176,9 +176,12 @@ struct moschip_port {
         int port_num;           /*Actual port number in the device(1,2,etc) */
         struct urb *write_urb;  /* write URB for this port */
         struct urb *read_urb;   /* read URB for this port */
+        struct urb *int_urb;
         __u8 shadowLCR;         /* last LCR value received */
         __u8 shadowMCR;         /* last MCR value received */
         char open;
+        char open_ports;
+        char zombie;
         wait_queue_head_t wait_chase;   /* for handling sleeping while waiting for chase to finish */
         wait_queue_head_t delta_msr_wait;       /* for handling sleeping while waiting for msr change to happen */
         int delta_msr_cond;
@@ -191,17 +194,17 @@ struct moschip_port {
         __u8 DcrRegOffset;
         //for processing control URBS in interrupt context
         struct urb *control_urb;
+        struct usb_ctrlrequest *dr;
         char *ctrl_buf;
         int MsrLsr;
 
+        spinlock_t pool_lock;
         struct urb *write_urb_pool[NUM_URBS];
+        char busy[NUM_URBS];
 };
 
 
 static int debug;
-static int mos7840_num_ports;   //this says the number of ports in the device
-static int mos7840_num_open_ports;
-
 
 /*
  * mos7840_set_reg_sync
@@ -254,7 +257,7 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg,
         struct usb_device *dev = port->serial->dev;
         val = val & 0x00ff;
         // For the UART control registers, the application number need to be Or'ed
-        if (mos7840_num_ports == 4) {
+        if (port->serial->num_ports == 4) {
                 val |=
                     (((__u16) port->number - (__u16) (port->serial->minor)) +
                      1) << 8;
@@ -294,7 +297,7 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg,
 
         //dbg("application number is %4x \n",(((__u16)port->number - (__u16)(port->serial->minor))+1)<<8);
         /*Wval  is same as application number */
-        if (mos7840_num_ports == 4) {
+        if (port->serial->num_ports == 4) {
                 Wval =
                     (((__u16) port->number - (__u16) (port->serial->minor)) +
                      1) << 8;
@@ -352,7 +355,7 @@ static inline struct moschip_port *mos7840_get_port_private(struct
         return (struct moschip_port *)usb_get_serial_port_data(port);
 }
 
-static int mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr)
+static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr)
 {
         struct moschip_port *mos7840_port;
         struct async_icount *icount;
@@ -366,22 +369,24 @@ static int mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr)
                 /* update input line counters */
                 if (new_msr & MOS_MSR_DELTA_CTS) {
                         icount->cts++;
+                        smp_wmb();
                 }
                 if (new_msr & MOS_MSR_DELTA_DSR) {
                         icount->dsr++;
+                        smp_wmb();
                 }
                 if (new_msr & MOS_MSR_DELTA_CD) {
                         icount->dcd++;
+                        smp_wmb();
                 }
                 if (new_msr & MOS_MSR_DELTA_RI) {
                         icount->rng++;
+                        smp_wmb();
                 }
         }
-
-        return 0;
 }
 
-static int mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr)
+static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr)
 {
         struct async_icount *icount;
 
@@ -400,18 +405,20 @@ static int mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr)
         icount = &port->icount;
         if (new_lsr & SERIAL_LSR_BI) {
                 icount->brk++;
+                smp_wmb();
         }
         if (new_lsr & SERIAL_LSR_OE) {
                 icount->overrun++;
+                smp_wmb();
         }
         if (new_lsr & SERIAL_LSR_PE) {
                 icount->parity++;
+                smp_wmb();
         }
         if (new_lsr & SERIAL_LSR_FE) {
                 icount->frame++;
+                smp_wmb();
         }
-
-        return 0;
 }
 
 /************************************************************************/
@@ -426,12 +433,15 @@ static void mos7840_control_callback(struct urb *urb)
         unsigned char *data;
         struct moschip_port *mos7840_port;
         __u8 regval = 0x0;
+        int result = 0;
 
         if (!urb) {
                 dbg("%s", "Invalid Pointer !!!!:\n");
                 return;
         }
 
+        mos7840_port = (struct moschip_port *)urb->context;
+
         switch (urb->status) {
         case 0:
                 /* success */
@@ -449,8 +459,6 @@ static void mos7840_control_callback(struct urb *urb)
                 goto exit;
         }
 
-        mos7840_port = (struct moschip_port *)urb->context;
-
         dbg("%s urb buffer size is %d\n", __FUNCTION__, urb->actual_length);
         dbg("%s mos7840_port->MsrLsr is %d port %d\n", __FUNCTION__,
             mos7840_port->MsrLsr, mos7840_port->port_num);
@@ -462,21 +470,26 @@ static void mos7840_control_callback(struct urb *urb)
         else if (mos7840_port->MsrLsr == 1)
                 mos7840_handle_new_lsr(mos7840_port, regval);
 
-      exit:
-        return;
+exit:
+        spin_lock(&mos7840_port->pool_lock);
+        if (!mos7840_port->zombie)
+                result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC);
+        spin_unlock(&mos7840_port->pool_lock);
+        if (result) {
+                dev_err(&urb->dev->dev,
+                        "%s - Error %d submitting interrupt urb\n",
+                        __FUNCTION__, result);
+        }
 }
 
 static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg,
                            __u16 * val)
 {
         struct usb_device *dev = mcs->port->serial->dev;
-        struct usb_ctrlrequest *dr = NULL;
-        unsigned char *buffer = NULL;
-        int ret = 0;
-        buffer = (__u8 *) mcs->ctrl_buf;
+        struct usb_ctrlrequest *dr = mcs->dr;
+        unsigned char *buffer = mcs->ctrl_buf;
+        int ret;
 
-//      dr=(struct usb_ctrlrequest *)(buffer);
-        dr = (void *)(buffer + 2);
         dr->bRequestType = MCS_RD_RTYPE;
         dr->bRequest = MCS_RDREQ;
         dr->wValue = cpu_to_le16(Wval); //0;
@@ -506,8 +519,8 @@ static void mos7840_interrupt_callback(struct urb *urb)
         __u16 Data;
         unsigned char *data;
         __u8 sp[5], st;
-        int i;
-        __u16 wval;
+        int i, rv = 0;
+        __u16 wval, wreg = 0;
 
         dbg("%s", " : Entering\n");
         if (!urb) {
@@ -569,31 +582,34 @@ static void mos7840_interrupt_callback(struct urb *urb)
                                         dbg("Serial Port %d: Receiver status error or ", i);
                                         dbg("address bit detected in 9-bit mode\n");
                                         mos7840_port->MsrLsr = 1;
-                                        mos7840_get_reg(mos7840_port, wval,
-                                                        LINE_STATUS_REGISTER,
-                                                        &Data);
+                                        wreg = LINE_STATUS_REGISTER;
                                         break;
                                 case SERIAL_IIR_MS:
                                         dbg("Serial Port %d: Modem status change\n", i);
                                         mos7840_port->MsrLsr = 0;
-                                        mos7840_get_reg(mos7840_port, wval,
-                                                        MODEM_STATUS_REGISTER,
-                                                        &Data);
+                                        wreg = MODEM_STATUS_REGISTER;
                                         break;
                                 }
+                                spin_lock(&mos7840_port->pool_lock);
+                                if (!mos7840_port->zombie) {
+                                        rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data);
+                                } else {
+                                        spin_unlock(&mos7840_port->pool_lock);
+                                        return;
+                                }
+                                spin_unlock(&mos7840_port->pool_lock);
                         }
                 }
         }
-      exit:
+        if (!(rv < 0)) /* the completion handler for the control urb will resubmit */
+                return;
+exit:
         result = usb_submit_urb(urb, GFP_ATOMIC);
         if (result) {
                 dev_err(&urb->dev->dev,
                         "%s - Error %d submitting interrupt urb\n",
                         __FUNCTION__, result);
         }
-
-        return;
-
 }
 
 static int mos7840_port_paranoia_check(struct usb_serial_port *port,
@@ -634,7 +650,8 @@ static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port,
         if (!port ||
             mos7840_port_paranoia_check(port, function) ||
             mos7840_serial_paranoia_check(port->serial, function)) {
-                /* then say that we don't have a valid usb_serial thing, which will                  * end up genrating -ENODEV return values */
+                /* then say that we don't have a valid usb_serial thing, which will
+                 * end up genrating -ENODEV return values */
                 return NULL;
         }
 
@@ -699,6 +716,7 @@ static void mos7840_bulk_in_callback(struct urb *urb)
                         tty_flip_buffer_push(tty);
                 }
                 mos7840_port->icount.rx += urb->actual_length;
+                smp_wmb();
                 dbg("mos7840_port->icount.rx is %d:\n",
                     mos7840_port->icount.rx);
         }
@@ -708,15 +726,14 @@ static void mos7840_bulk_in_callback(struct urb *urb)
                 return;
         }
 
-        if (mos7840_port->read_urb->status != -EINPROGRESS) {
-                mos7840_port->read_urb->dev = serial->dev;
 
-                status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
+        mos7840_port->read_urb->dev = serial->dev;
 
-                if (status) {
-                        dbg(" usb_submit_urb(read bulk) failed, status = %d",
-                            status);
-                }
+        status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC);
+
+        if (status) {
+                dbg(" usb_submit_urb(read bulk) failed, status = %d",
+                 status);
         }
 }
 
@@ -730,17 +747,28 @@ static void mos7840_bulk_out_data_callback(struct urb *urb)
 {
         struct moschip_port *mos7840_port;
         struct tty_struct *tty;
+        int i;
+
         if (!urb) {
                 dbg("%s", "Invalid Pointer !!!!:\n");
                 return;
         }
 
+        mos7840_port = (struct moschip_port *)urb->context;
+        spin_lock(&mos7840_port->pool_lock);
+        for (i = 0; i < NUM_URBS; i++) {
+                if (urb == mos7840_port->write_urb_pool[i]) {
+                        mos7840_port->busy[i] = 0;
+                        break;
+                }
+        }
+        spin_unlock(&mos7840_port->pool_lock);
+
         if (urb->status) {
                 dbg("nonzero write bulk status received:%d\n", urb->status);
                 return;
         }
 
-        mos7840_port = (struct moschip_port *)urb->context;
         if (!mos7840_port) {
                 dbg("%s", "NULL mos7840_port pointer \n");
                 return;
@@ -792,13 +820,13 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
         __u16 Data;
         int status;
         struct moschip_port *mos7840_port;
+        struct moschip_port *port0;
 
         if (mos7840_port_paranoia_check(port, __FUNCTION__)) {
                 dbg("%s", "Port Paranoia failed \n");
                 return -ENODEV;
         }
 
-        mos7840_num_open_ports++;
         serial = port->serial;
 
         if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) {
@@ -807,16 +835,18 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
         }
 
         mos7840_port = mos7840_get_port_private(port);
+        port0 = mos7840_get_port_private(serial->port[0]);
 
-        if (mos7840_port == NULL)
+        if (mos7840_port == NULL || port0 == NULL)
                 return -ENODEV;
 
         usb_clear_halt(serial->dev, port->write_urb->pipe);
         usb_clear_halt(serial->dev, port->read_urb->pipe);
+        port0->open_ports++;
 
         /* Initialising the write urb pool */
         for (j = 0; j < NUM_URBS; ++j) {
-                urb = usb_alloc_urb(0, GFP_ATOMIC);
+                urb = usb_alloc_urb(0, GFP_KERNEL);
                 mos7840_port->write_urb_pool[j] = urb;
 
                 if (urb == NULL) {
@@ -824,10 +854,10 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
                         continue;
                 }
 
-                urb->transfer_buffer = NULL;
-                urb->transfer_buffer =
-                    kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
+                urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
                 if (!urb->transfer_buffer) {
+                        usb_free_urb(urb);
+                        mos7840_port->write_urb_pool[j] = NULL;
                         err("%s-out of memory for urb buffers.", __FUNCTION__);
                         continue;
                 }
@@ -879,9 +909,7 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
         }
         Data |= 0x08;           //Driver done bit
         Data |= 0x20;           //rx_disable
-        status = 0;
-        status =
-            mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data);
+        status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data);
         if (status < 0) {
                 dbg("writing Controlreg failed\n");
                 return -1;
@@ -893,7 +921,6 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
         ////////////////////////////////////
 
         Data = 0x00;
-        status = 0;
         status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
         if (status < 0) {
                 dbg("disableing interrupts failed\n");
@@ -901,7 +928,6 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
         }
         // Set FIFO_CONTROL_REGISTER to the default value
         Data = 0x00;
-        status = 0;
         status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
         if (status < 0) {
                 dbg("Writing FIFO_CONTROL_REGISTER  failed\n");
@@ -909,7 +935,6 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
         }
 
         Data = 0xcf;
-        status = 0;
         status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
         if (status < 0) {
                 dbg("Writing FIFO_CONTROL_REGISTER  failed\n");
@@ -917,22 +942,18 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
         }
 
         Data = 0x03;
-        status = 0;
         status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
         mos7840_port->shadowLCR = Data;
 
         Data = 0x0b;
-        status = 0;
         status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
         mos7840_port->shadowMCR = Data;
 
         Data = 0x00;
-        status = 0;
         status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
         mos7840_port->shadowLCR = Data;
 
         Data |= SERIAL_LCR_DLAB;        //data latch enable in LCR 0x80
-        status = 0;
         status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
 
         Data = 0x0c;
@@ -999,7 +1020,7 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
 /* Check to see if we've set up our endpoint info yet    *
      * (can't set it up in mos7840_startup as the structures *
      * were not set up at that time.)                        */
-        if (mos7840_num_open_ports == 1) {
+        if (port0->open_ports == 1) {
                 if (serial->port[0]->interrupt_in_buffer == NULL) {
 
                         /* set up interrupt urb */
@@ -1097,6 +1118,7 @@ static int mos7840_chars_in_buffer(struct usb_serial_port *port)
 {
         int i;
         int chars = 0;
+        unsigned long flags;
         struct moschip_port *mos7840_port;
 
         dbg("%s \n", " mos7840_chars_in_buffer:entering ...........");
@@ -1112,13 +1134,15 @@ static int mos7840_chars_in_buffer(struct usb_serial_port *port)
                 return -1;
         }
 
+        spin_lock_irqsave(&mos7840_port->pool_lock,flags);
         for (i = 0; i < NUM_URBS; ++i) {
-                if (mos7840_port->write_urb_pool[i]->status == -EINPROGRESS) {
+                if (mos7840_port->busy[i]) {
                         chars += URB_TRANSFER_BUFFER_SIZE;
                 }
         }
+        spin_unlock_irqrestore(&mos7840_port->pool_lock,flags);
         dbg("%s - returns %d", __FUNCTION__, chars);
-        return (chars);
+        return chars;
 
 }
 
@@ -1172,6 +1196,7 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp)
 {
         struct usb_serial *serial;
         struct moschip_port *mos7840_port;
+        struct moschip_port *port0;
         int j;
         __u16 Data;
 
@@ -1189,10 +1214,10 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp)
         }
 
         mos7840_port = mos7840_get_port_private(port);
+        port0 = mos7840_get_port_private(serial->port[0]);
 
-        if (mos7840_port == NULL) {
+        if (mos7840_port == NULL || port0 == NULL)
                 return;
-        }
 
         for (j = 0; j < NUM_URBS; ++j)
                 usb_kill_urb(mos7840_port->write_urb_pool[j]);
@@ -1234,12 +1259,13 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp)
         }
 //              if(mos7840_port->ctrl_buf != NULL)
 //                      kfree(mos7840_port->ctrl_buf);
-        mos7840_num_open_ports--;
+        port0->open_ports--;
         dbg("mos7840_num_open_ports in close%d:in port%d\n",
-            mos7840_num_open_ports, port->number);
-        if (mos7840_num_open_ports == 0) {
+            port0->open_ports, port->number);
+        if (port0->open_ports == 0) {
                 if (serial->port[0]->interrupt_in_urb) {
                         dbg("%s", "Shutdown interrupt_in_urb\n");
+                        usb_kill_urb(serial->port[0]->interrupt_in_urb);
                 }
         }
 
@@ -1368,6 +1394,7 @@ static int mos7840_write_room(struct usb_serial_port *port)
 {
         int i;
         int room = 0;
+        unsigned long flags;
         struct moschip_port *mos7840_port;
 
         dbg("%s \n", " mos7840_write_room:entering ...........");
@@ -1384,14 +1411,17 @@ static int mos7840_write_room(struct usb_serial_port *port)
                 return -1;
         }
 
+        spin_lock_irqsave(&mos7840_port->pool_lock, flags);
         for (i = 0; i < NUM_URBS; ++i) {
-                if (mos7840_port->write_urb_pool[i]->status != -EINPROGRESS) {
+                if (!mos7840_port->busy[i]) {
                         room += URB_TRANSFER_BUFFER_SIZE;
                 }
         }
+        spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
 
+        room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1;
         dbg("%s - returns %d", __FUNCTION__, room);
-        return (room);
+        return room;
 
 }
 
@@ -1410,6 +1440,7 @@ static int mos7840_write(struct usb_serial_port *port,
         int i;
         int bytes_sent = 0;
         int transfer_size;
+        unsigned long flags;
 
         struct moschip_port *mos7840_port;
         struct usb_serial *serial;
@@ -1476,13 +1507,16 @@ static int mos7840_write(struct usb_serial_port *port,
         /* try to find a free urb in the list */
         urb = NULL;
 
+        spin_lock_irqsave(&mos7840_port->pool_lock, flags);
         for (i = 0; i < NUM_URBS; ++i) {
-                if (mos7840_port->write_urb_pool[i]->status != -EINPROGRESS) {
+                if (!mos7840_port->busy[i]) {
+                        mos7840_port->busy[i] = 1;
                         urb = mos7840_port->write_urb_pool[i];
                         dbg("\nURB:%d", i);
                         break;
                 }
         }
+        spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
 
         if (urb == NULL) {
                 dbg("%s - no more free urbs", __FUNCTION__);
@@ -1518,6 +1552,7 @@ static int mos7840_write(struct usb_serial_port *port,
         status = usb_submit_urb(urb, GFP_ATOMIC);
 
         if (status) {
+                mos7840_port->busy[i] = 0;
                 err("%s - usb_submit_urb(write bulk) failed with status = %d",
                     __FUNCTION__, status);
                 bytes_sent = status;
@@ -1525,6 +1560,7 @@ static int mos7840_write(struct usb_serial_port *port,
         }
         bytes_sent = transfer_size;
         mos7840_port->icount.tx += transfer_size;
+        smp_wmb();
         dbg("mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx);
       exit:
 
@@ -2490,6 +2526,7 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
                         cnow = mos7840_port->icount;
+                        smp_rmb();
                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
                             cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
                                 return -EIO;    /* no change => error */
@@ -2506,6 +2543,7 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
 
         case TIOCGICOUNT:
                 cnow = mos7840_port->icount;
+                smp_rmb();
                 icount.cts = cnow.cts;
                 icount.dsr = cnow.dsr;
                 icount.rng = cnow.rng;
@@ -2535,19 +2573,18 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
 
 static int mos7840_calc_num_ports(struct usb_serial *serial)
 {
+        int mos7840_num_ports = 0;
 
         dbg("numberofendpoints: %d \n",
             (int)serial->interface->cur_altsetting->desc.bNumEndpoints);
         dbg("numberofendpoints: %d \n",
             (int)serial->interface->altsetting->desc.bNumEndpoints);
         if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) {
-                mos7840_num_ports = 2;
-                serial->type->num_ports = 2;
+                mos7840_num_ports = serial->num_ports = 2;
         } else if (serial->interface->cur_altsetting->desc.bNumEndpoints == 9) {
-                mos7840_num_ports = 4;
-                serial->type->num_bulk_in = 4;
-                serial->type->num_bulk_out = 4;
-                serial->type->num_ports = 4;
+                serial->num_bulk_in = 4;
+                serial->num_bulk_out = 4;
+                mos7840_num_ports = serial->num_ports = 4;
         }
 
         return mos7840_num_ports;
@@ -2583,7 +2620,9 @@ static int mos7840_startup(struct usb_serial *serial)
                 mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL);
                 if (mos7840_port == NULL) {
                         err("%s - Out of memory", __FUNCTION__);
-                        return -ENOMEM;
+                        status = -ENOMEM;
+                        i--; /* don't follow NULL pointer cleaning up */
+                        goto error;
                 }
 
                 /* Initialize all port interrupt end point to port 0 int endpoint *
@@ -2591,6 +2630,7 @@ static int mos7840_startup(struct usb_serial *serial)
 
                 mos7840_port->port = serial->port[i];
                 mos7840_set_port_private(serial->port[i], mos7840_port);
+                spin_lock_init(&mos7840_port->pool_lock);
 
                 mos7840_port->port_num = ((serial->port[i]->number -
                                            (serial->port[i]->serial->minor)) +
@@ -2601,22 +2641,22 @@ static int mos7840_startup(struct usb_serial *serial)
                         mos7840_port->ControlRegOffset = 0x1;
                         mos7840_port->DcrRegOffset = 0x4;
                 } else if ((mos7840_port->port_num == 2)
-                           && (mos7840_num_ports == 4)) {
+                           && (serial->num_ports == 4)) {
                         mos7840_port->SpRegOffset = 0x8;
                         mos7840_port->ControlRegOffset = 0x9;
                         mos7840_port->DcrRegOffset = 0x16;
                 } else if ((mos7840_port->port_num == 2)
-                           && (mos7840_num_ports == 2)) {
+                           && (serial->num_ports == 2)) {
                         mos7840_port->SpRegOffset = 0xa;
                         mos7840_port->ControlRegOffset = 0xb;
                         mos7840_port->DcrRegOffset = 0x19;
                 } else if ((mos7840_port->port_num == 3)
-                           && (mos7840_num_ports == 4)) {
+                           && (serial->num_ports == 4)) {
                         mos7840_port->SpRegOffset = 0xa;
                         mos7840_port->ControlRegOffset = 0xb;
                         mos7840_port->DcrRegOffset = 0x19;
                 } else if ((mos7840_port->port_num == 4)
-                           && (mos7840_num_ports == 4)) {
+                           && (serial->num_ports == 4)) {
                         mos7840_port->SpRegOffset = 0xc;
                         mos7840_port->ControlRegOffset = 0xd;
                         mos7840_port->DcrRegOffset = 0x1c;
@@ -2701,21 +2741,19 @@ static int mos7840_startup(struct usb_serial *serial)
                         dbg("CLK_START_VALUE_REGISTER Writing success status%d\n", status);
 
                 Data = 0x20;
-                status = 0;
                 status =
                     mos7840_set_reg_sync(serial->port[i], CLK_MULTI_REGISTER,
                                          Data);
                 if (status < 0) {
                         dbg("Writing CLK_MULTI_REGISTER failed status-0x%x\n",
                             status);
-                        break;
+                        goto error;
                 } else
                         dbg("CLK_MULTI_REGISTER Writing success status%d\n",
                             status);
 
                 //write value 0x0 to scratchpad register
                 Data = 0x00;
-                status = 0;
                 status =
                     mos7840_set_uart_reg(serial->port[i], SCRATCH_PAD_REGISTER,
                                          Data);
@@ -2729,7 +2767,7 @@ static int mos7840_startup(struct usb_serial *serial)
 
                 //Zero Length flag register
                 if ((mos7840_port->port_num != 1)
-                    && (mos7840_num_ports == 2)) {
+                    && (serial->num_ports == 2)) {
 
                         Data = 0xff;
                         status = 0;
@@ -2770,14 +2808,17 @@ static int mos7840_startup(struct usb_serial *serial)
                                     i + 1, status);
 
                 }
-                mos7840_port->control_urb = usb_alloc_urb(0, GFP_ATOMIC);
+                mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL);
                 mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL);
-
+                mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
+                if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || !mos7840_port->dr) {
+                        status = -ENOMEM;
+                        goto error;
+                }
         }
 
         //Zero Length flag enable
         Data = 0x0f;
-        status = 0;
         status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data);
         if (status < 0) {
                 dbg("Writing ZLP_REG5 failed status-0x%x\n", status);
@@ -2789,6 +2830,17 @@ static int mos7840_startup(struct usb_serial *serial)
         usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
                         (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ);
         return 0;
+error:
+        for (/* nothing */; i >= 0; i--) {
+                mos7840_port = mos7840_get_port_private(serial->port[i]);
+
+                kfree(mos7840_port->dr);
+                kfree(mos7840_port->ctrl_buf);
+                usb_free_urb(mos7840_port->control_urb);
+                kfree(mos7840_port);
+                serial->port[i] = NULL;
+        }
+        return status;
 }
 
 /****************************************************************************
@@ -2799,6 +2851,7 @@ static int mos7840_startup(struct usb_serial *serial)
 static void mos7840_shutdown(struct usb_serial *serial)
 {
         int i;
+        unsigned long flags;
         struct moschip_port *mos7840_port;
         dbg("%s \n", " shutdown :entering..........");
 
@@ -2814,8 +2867,12 @@ static void mos7840_shutdown(struct usb_serial *serial)
 
         for (i = 0; i < serial->num_ports; ++i) {
                 mos7840_port = mos7840_get_port_private(serial->port[i]);
-                kfree(mos7840_port->ctrl_buf);
+                spin_lock_irqsave(&mos7840_port->pool_lock, flags);
+                mos7840_port->zombie = 1;
+                spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
                 usb_kill_urb(mos7840_port->control_urb);
+                kfree(mos7840_port->ctrl_buf);
+                kfree(mos7840_port->dr);
                 kfree(mos7840_port);
                 mos7840_set_port_private(serial->port[i], NULL);
         }
diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c
index 0216ac12a27d..4adfab988e86 100644
--- a/drivers/usb/serial/omninet.c
+++ b/drivers/usb/serial/omninet.c
@@ -69,6 +69,7 @@ static void omninet_write_bulk_callback	(struct urb *urb);
 static int  omninet_write               (struct usb_serial_port *port, const unsigned char *buf, int count);
 static int  omninet_write_room          (struct usb_serial_port *port);
 static void omninet_shutdown            (struct usb_serial *serial);
+static int omninet_attach               (struct usb_serial *serial);
 
 static struct usb_device_id id_table [] = {
         { USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) },
@@ -99,6 +100,7 @@ static struct usb_serial_driver zyxel_omninet_device = {
         .num_bulk_in =          1,
         .num_bulk_out =         2,
         .num_ports =            1,
+        .attach =               omninet_attach,
         .open =                 omninet_open,
         .close =                omninet_close,
         .write =                omninet_write,
@@ -145,22 +147,30 @@ struct omninet_data
         __u8    od_outseq;      // Sequence number for bulk_out URBs
 };
 
+static int omninet_attach (struct usb_serial *serial)
+{
+        struct omninet_data *od;
+        struct usb_serial_port *port = serial->port[0];
+
+        od = kmalloc( sizeof(struct omninet_data), GFP_KERNEL );
+        if( !od ) {
+                err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct omninet_data));
+                return -ENOMEM;
+        }
+        usb_set_serial_port_data(port, od);
+        return 0;
+}
+
 static int omninet_open (struct usb_serial_port *port, struct file *filp)
 {
         struct usb_serial       *serial = port->serial;
         struct usb_serial_port  *wport;
-        struct omninet_data     *od;
+        struct omninet_data     *od = usb_get_serial_port_data(port);
         int                     result = 0;
 
         dbg("%s - port %d", __FUNCTION__, port->number);
 
         od = kmalloc( sizeof(struct omninet_data), GFP_KERNEL );
-        if( !od ) {
-                err("%s- kmalloc(%Zd) failed.", __FUNCTION__, sizeof(struct omninet_data));
-                return -ENOMEM;
-        }
-
-        usb_set_serial_port_data(port, od);
         wport = serial->port[1];
         wport->tty = port->tty;
 
@@ -170,24 +180,17 @@ static int omninet_open (struct usb_serial_port *port, struct file *filp)
                       port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
                       omninet_read_bulk_callback, port);
         result = usb_submit_urb(port->read_urb, GFP_KERNEL);
-        if (result)
+        if (result) {
                 err("%s - failed submitting read urb, error %d", __FUNCTION__, result);
+        }
 
         return result;
 }
 
 static void omninet_close (struct usb_serial_port *port, struct file * filp)
 {
-        struct usb_serial       *serial = port->serial;
-        struct usb_serial_port  *wport;
-
         dbg("%s - port %d", __FUNCTION__, port->number);
-
-        wport = serial->port[1];
-        usb_kill_urb(wport->write_urb);
         usb_kill_urb(port->read_urb);
-
-        kfree(usb_get_serial_port_data(port));
 }
 
 
@@ -326,7 +329,12 @@ static void omninet_write_bulk_callback (struct urb *urb)
 
 static void omninet_shutdown (struct usb_serial *serial)
 {
+        struct usb_serial_port *wport = serial->port[1];
+        struct usb_serial_port *port = serial->port[0];
         dbg ("%s", __FUNCTION__);
+
+        usb_kill_urb(wport->write_urb);
+        kfree(usb_get_serial_port_data(port));
 }
 
 
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index e178e6f40319..8c3f55b080b4 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -113,6 +113,12 @@ static int  option_send_setup(struct usb_serial_port *port);
 #define ANYDATA_VENDOR_ID                       0x16d5
 #define ANYDATA_PRODUCT_ID                      0x6501
 
+#define BANDRICH_VENDOR_ID                      0x1A8D
+#define BANDRICH_PRODUCT_C100_1                 0x1002
+#define BANDRICH_PRODUCT_C100_2                 0x1003
+
+#define DELL_VENDOR_ID                          0x413C
+
 static struct usb_device_id option_ids[] = {
         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
         { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
@@ -165,6 +171,9 @@ static struct usb_device_id option_ids[] = {
         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2130) }, /* Novatel Merlin ES620 SM Bus */
         { USB_DEVICE(NOVATELWIRELESS_VENDOR_ID, 0x2410) }, /* Novatel EU740 */
         { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ID) },
+        { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_1) },
+        { USB_DEVICE(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_C100_2) },
+        { USB_DEVICE(DELL_VENDOR_ID, 0x8118) },         /* Dell Wireless 5510 Mobile Broadband HSDPA ExpressCard */
         { } /* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, option_ids);
@@ -591,12 +600,6 @@ static int option_open(struct usb_serial_port *port, struct file *filp)
         return (0);
 }
 
-static inline void stop_urb(struct urb *urb)
-{
-        if (urb && urb->status == -EINPROGRESS)
-                usb_kill_urb(urb);
-}
-
 static void option_close(struct usb_serial_port *port, struct file *filp)
 {
         int i;
@@ -614,9 +617,9 @@ static void option_close(struct usb_serial_port *port, struct file *filp)
 
                 /* Stop reading/writing urbs */
                 for (i = 0; i < N_IN_URB; i++)
-                        stop_urb(portdata->in_urbs[i]);
+                        usb_kill_urb(portdata->in_urbs[i]);
                 for (i = 0; i < N_OUT_URB; i++)
-                        stop_urb(portdata->out_urbs[i]);
+                        usb_kill_urb(portdata->out_urbs[i]);
         }
         port->tty = NULL;
 }
@@ -747,9 +750,9 @@ static void option_shutdown(struct usb_serial *serial)
                 port = serial->port[i];
                 portdata = usb_get_serial_port_data(port);
                 for (j = 0; j < N_IN_URB; j++)
-                        stop_urb(portdata->in_urbs[j]);
+                        usb_kill_urb(portdata->in_urbs[j]);
                 for (j = 0; j < N_OUT_URB; j++)
-                        stop_urb(portdata->out_urbs[j]);
+                        usb_kill_urb(portdata->out_urbs[j]);
         }
 
         /* Now free them */
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index ecedd833818d..644607de4c11 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -456,12 +456,6 @@ static int sierra_open(struct usb_serial_port *port, struct file *filp)
         return (0);
 }
 
-static inline void stop_urb(struct urb *urb)
-{
-        if (urb && urb->status == -EINPROGRESS)
-                usb_kill_urb(urb);
-}
-
 static void sierra_close(struct usb_serial_port *port, struct file *filp)
 {
         int i;
@@ -479,9 +473,9 @@ static void sierra_close(struct usb_serial_port *port, struct file *filp)
 
                 /* Stop reading/writing urbs */
                 for (i = 0; i < N_IN_URB; i++)
-                        stop_urb(portdata->in_urbs[i]);
+                        usb_unlink_urb(portdata->in_urbs[i]);
                 for (i = 0; i < N_OUT_URB; i++)
-                        stop_urb(portdata->out_urbs[i]);
+                        usb_unlink_urb(portdata->out_urbs[i]);
         }
         port->tty = NULL;
 }
@@ -583,17 +577,26 @@ static void sierra_shutdown(struct usb_serial *serial)
         /* Stop reading/writing urbs */
         for (i = 0; i < serial->num_ports; ++i) {
                 port = serial->port[i];
+                if (!port)
+                        continue;
                 portdata = usb_get_serial_port_data(port);
+                if (!portdata)
+                        continue;
+
                 for (j = 0; j < N_IN_URB; j++)
-                        stop_urb(portdata->in_urbs[j]);
+                        usb_unlink_urb(portdata->in_urbs[j]);
                 for (j = 0; j < N_OUT_URB; j++)
-                        stop_urb(portdata->out_urbs[j]);
+                        usb_unlink_urb(portdata->out_urbs[j]);
         }
 
         /* Now free them */
         for (i = 0; i < serial->num_ports; ++i) {
                 port = serial->port[i];
+                if (!port)
+                        continue;
                 portdata = usb_get_serial_port_data(port);
+                if (!portdata)
+                        continue;
 
                 for (j = 0; j < N_IN_URB; j++) {
                         if (portdata->in_urbs[j]) {
@@ -612,6 +615,8 @@ static void sierra_shutdown(struct usb_serial *serial)
         /* Now free per port private data */
         for (i = 0; i < serial->num_ports; i++) {
                 port = serial->port[i];
+                if (!port)
+                        continue;
                 kfree(usb_get_serial_port_data(port));
         }
 }
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 2f59ff226e2c..ffbe601cde2a 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -384,19 +384,21 @@ static int visor_write (struct usb_serial_port *port, const unsigned char *buf,
                 dbg("%s - write limit hit\n", __FUNCTION__);
                 return 0;
         }
+        priv->outstanding_urbs++;
         spin_unlock_irqrestore(&priv->lock, flags);
 
         buffer = kmalloc (count, GFP_ATOMIC);
         if (!buffer) {
                 dev_err(&port->dev, "out of memory\n");
-                return -ENOMEM;
+                count = -ENOMEM;
+                goto error_no_buffer;
         }
 
         urb = usb_alloc_urb(0, GFP_ATOMIC);
         if (!urb) {
                 dev_err(&port->dev, "no more free urbs\n");
-                kfree (buffer);
-                return -ENOMEM;
+                count = -ENOMEM;
+                goto error_no_urb;
         }
 
         memcpy (buffer, buf, count);
@@ -415,19 +417,27 @@ static int visor_write (struct usb_serial_port *port, const unsigned char *buf,
                 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
                         __FUNCTION__, status);
                 count = status;
-                kfree (buffer);
+                goto error;
         } else {
                 spin_lock_irqsave(&priv->lock, flags);
-                ++priv->outstanding_urbs;
                 priv->bytes_out += count;
                 spin_unlock_irqrestore(&priv->lock, flags);
         }
 
         /* we are done with this urb, so let the host driver
          * really free it when it is finished with it */
-        usb_free_urb (urb);
+        usb_free_urb(urb);
 
         return count;
+error:
+        usb_free_urb(urb);
+error_no_urb:
+        kfree(buffer);
+error_no_buffer:
+        spin_lock_irqsave(&priv->lock, flags);
+        --priv->outstanding_urbs;
+        spin_unlock_irqrestore(&priv->lock, flags);
+        return count;
 }
 
 
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index bf16e9e1d84e..27c5f8f9a2d5 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -1109,7 +1109,7 @@ static int firm_send_command (struct usb_serial_port *port, __u8 command, __u8 *
         command_port = port->serial->port[COMMAND_PORT];
         command_info = usb_get_serial_port_data(command_port);
         spin_lock_irqsave(&command_info->lock, flags);
-        command_info->command_finished = FALSE;
+        command_info->command_finished = false;
         
         transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer;
         transfer_buffer[0] = command;
@@ -1124,12 +1124,12 @@ static int firm_send_command (struct usb_serial_port *port, __u8 command, __u8 *
         spin_unlock_irqrestore(&command_info->lock, flags);
 
         /* wait for the command to complete */
-        wait_event_interruptible_timeout(command_info->wait_command, 
-                (command_info->command_finished != FALSE), COMMAND_TIMEOUT);
+        wait_event_interruptible_timeout(command_info->wait_command,
+                (bool)command_info->command_finished, COMMAND_TIMEOUT);
 
         spin_lock_irqsave(&command_info->lock, flags);
 
-        if (command_info->command_finished == FALSE) {
+        if (command_info->command_finished == false) {
                 dbg("%s - command timed out.", __FUNCTION__);
                 retval = -ETIMEDOUT;
                 goto exit;
diff --git a/drivers/usb/serial/whiteheat.h b/drivers/usb/serial/whiteheat.h
index d714eff58dc0..f16079705664 100644
--- a/drivers/usb/serial/whiteheat.h
+++ b/drivers/usb/serial/whiteheat.h
@@ -20,10 +20,6 @@
 #define __LINUX_USB_SERIAL_WHITEHEAT_H
 
 
-#define FALSE   0
-#define TRUE    1
-
-
 /* WhiteHEAT commands */
 #define WHITEHEAT_OPEN                  1       /* open the port */
 #define WHITEHEAT_CLOSE                 2       /* close the port */
diff --git a/drivers/usb/storage/libusual.c b/drivers/usb/storage/libusual.c
index 599ad10a761b..06d1107dbd47 100644
--- a/drivers/usb/storage/libusual.c
+++ b/drivers/usb/storage/libusual.c
@@ -117,6 +117,7 @@ EXPORT_SYMBOL_GPL(usb_usual_check_type);
 static int usu_probe(struct usb_interface *intf,
                          const struct usb_device_id *id)
 {
+        int rc;
         unsigned long type;
         struct task_struct* task;
         unsigned long flags;
@@ -135,7 +136,7 @@ static int usu_probe(struct usb_interface *intf,
 
         task = kthread_run(usu_probe_thread, (void*)type, "libusual_%d", type);
         if (IS_ERR(task)) {
-                int rc = PTR_ERR(task);
+                rc = PTR_ERR(task);
                 printk(KERN_WARNING "libusual: "
                     "Unable to start the thread for %s: %d\n",
                     bias_names[type], rc);
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index e13637dfb642..8b3145ab7757 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -327,6 +327,13 @@ UNUSUAL_DEV(  0x04b0, 0x040d, 0x0100, 0x0100,
                 US_SC_DEVICE, US_PR_DEVICE, NULL,
                 US_FL_FIX_CAPACITY),
 
+/* Reported by Emil Larsson <emil@swip.net> */
+UNUSUAL_DEV(  0x04b0, 0x0411, 0x0100, 0x0100,
+                "NIKON",
+                "NIKON DSC D80",
+                US_SC_DEVICE, US_PR_DEVICE, NULL,
+                US_FL_FIX_CAPACITY),
+
 /* BENQ DC5330
  * Reported by Manuel Fombuena <mfombuena@ya.com> and
  * Frank Copeland <fjc@thingy.apana.org.au> */
@@ -1364,15 +1371,6 @@ UNUSUAL_DEV(  0x1210, 0x0003, 0x0100, 0x0100,
                 US_SC_DEVICE, US_PR_DEVICE, NULL,
                 US_FL_IGNORE_RESIDUE ),
 
-/* This prevents the kernel from detecting the virtual cd-drive with the
- * Windows drivers.  <johann.wilhelm@student.tugraz.at>
-*/
-UNUSUAL_DEV( 0x12d1, 0x1003, 0x0000, 0xffff,
-                "HUAWEI",
-                "E220 USB-UMTS Install",
-                US_SC_DEVICE, US_PR_DEVICE, NULL,
-                US_FL_IGNORE_DEVICE),
-
 /* Reported by Vilius Bilinkevicius <vilisas AT xxx DOT lt) */
 UNUSUAL_DEV(  0x132b, 0x000b, 0x0001, 0x0001,
                 "Minolta",
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index 46929a1b6f24..8432bf171d2e 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -34,18 +34,25 @@ static struct usb_device_id skel_table [] = {
 };
 MODULE_DEVICE_TABLE(usb, skel_table);
 
+/* to prevent a race between open and disconnect */
+static DEFINE_MUTEX(skel_open_lock);
+
 
 /* Get a minor range for your devices from the usb maintainer */
 #define USB_SKEL_MINOR_BASE     192
 
 /* our private defines. if this grows any larger, use your own .h file */
 #define MAX_TRANSFER            (PAGE_SIZE - 512)
+/* MAX_TRANSFER is chosen so that the VM is not stressed by
+   allocations > PAGE_SIZE and the number of packets in a page
+   is an integer 512 is the largest possible packet on EHCI */
 #define WRITES_IN_FLIGHT        8
+/* arbitrarily chosen */
 
 /* Structure to hold all of our device specific stuff */
 struct usb_skel {
-        struct usb_device       *dev;                   /* the usb device for this device */
-        struct usb_interface    *interface;             /* the interface for this device */
+        struct usb_device       *udev;                  /* the usb device for this device */
+        struct usb_interface    *interface;             /* the interface for this device */
         struct semaphore        limit_sem;              /* limiting the number of writes in progress */
         unsigned char           *bulk_in_buffer;        /* the buffer to receive data */
         size_t                  bulk_in_size;           /* the size of the receive buffer */
@@ -76,8 +83,10 @@ static int skel_open(struct inode *inode, struct file *file)
 
         subminor = iminor(inode);
 
+        mutex_lock(&skel_open_lock);
         interface = usb_find_interface(&skel_driver, subminor);
         if (!interface) {
+                mutex_unlock(&skel_open_lock);
                 err ("%s - error, can't find device for minor %d",
                      __FUNCTION__, subminor);
                 retval = -ENODEV;
@@ -86,12 +95,15 @@ static int skel_open(struct inode *inode, struct file *file)
 
         dev = usb_get_intfdata(interface);
         if (!dev) {
+                mutex_unlock(&skel_open_lock);
                 retval = -ENODEV;
                 goto exit;
         }
 
         /* increment our usage count for the device */
         kref_get(&dev->kref);
+        /* now we can drop the lock */
+        mutex_unlock(&skel_open_lock);
 
         /* prevent the device from being autosuspended */
         retval = usb_autopm_get_interface(interface);
@@ -201,12 +213,6 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou
                 goto exit;
         }
 
-        mutex_lock(&dev->io_mutex);
-        if (!dev->interface) {          /* disconnect() was called */
-                retval = -ENODEV;
-                goto error;
-        }
-
         /* create a urb, and a buffer for it, and copy the data to the urb */
         urb = usb_alloc_urb(0, GFP_KERNEL);
         if (!urb) {
@@ -225,6 +231,14 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou
                 goto error;
         }
 
+        /* this lock makes sure we don't submit URBs to gone devices */
+        mutex_lock(&dev->io_mutex);
+        if (!dev->interface) {          /* disconnect() was called */
+                mutex_unlock(&dev->io_mutex);
+                retval = -ENODEV;
+                goto error;
+        }
+
         /* initialize the urb properly */
         usb_fill_bulk_urb(urb, dev->udev,
                           usb_sndbulkpipe(dev->udev, dev->bulk_out_endpointAddr),
@@ -233,6 +247,7 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou
 
         /* send the data out the bulk port */
         retval = usb_submit_urb(urb, GFP_KERNEL);
+        mutex_unlock(&dev->io_mutex);
         if (retval) {
                 err("%s - failed submitting write urb, error %d", __FUNCTION__, retval);
                 goto error;
@@ -241,7 +256,7 @@ static ssize_t skel_write(struct file *file, const char *user_buffer, size_t cou
         /* release our reference to this urb, the USB core will eventually free it entirely */
         usb_free_urb(urb);
 
-        mutex_unlock(&dev->io_mutex);
+
         return writesize;
 
 error:
@@ -249,7 +264,6 @@ error:
                 usb_buffer_free(dev->udev, writesize, buf, urb->transfer_dma);
                 usb_free_urb(urb);
         }
-        mutex_unlock(&dev->io_mutex);
         up(&dev->limit_sem);
 
 exit:
@@ -344,6 +358,7 @@ static int skel_probe(struct usb_interface *interface, const struct usb_device_i
 
 error:
         if (dev)
+                /* this frees allocated memory */
                 kref_put(&dev->kref, skel_delete);
         return retval;
 }
@@ -354,20 +369,21 @@ static void skel_disconnect(struct usb_interface *interface)
         int minor = interface->minor;
 
         /* prevent skel_open() from racing skel_disconnect() */
-        lock_kernel();
+        mutex_lock(&skel_open_lock);
 
         dev = usb_get_intfdata(interface);
         usb_set_intfdata(interface, NULL);
 
         /* give back our minor */
         usb_deregister_dev(interface, &skel_class);
+        mutex_unlock(&skel_open_lock);
 
         /* prevent more I/O from starting */
         mutex_lock(&dev->io_mutex);
         dev->interface = NULL;
         mutex_unlock(&dev->io_mutex);
 
-        unlock_kernel();
+
 
         /* decrement our usage count */
         kref_put(&dev->kref, skel_delete);
@@ -380,6 +396,7 @@ static struct usb_driver skel_driver = {
         .probe =        skel_probe,
         .disconnect =   skel_disconnect,
         .id_table =     skel_table,
+        .supports_autosuspend = 1,
 };
 
 static int __init usb_skel_init(void)