Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: export autosuspend delay in sysfs
  sysfs: allow attributes to be added to groups
  USB: make autosuspend delay a module parameter
  USB: minor cleanups for sysfs.c
  USB: add a blacklist for devices that can't handle some things we throw at them.
  USB: refactor usb device matching and create usb_device_match
  USB: Wacom driver updates
  gadgetfs: Fixed bug in ep_aio_read_retry.
  USB: Use USB defines in usbmouse.c and usbkbd.c
  USB: add rationale on why usb descriptor structures have to be packed
  USB: ftdi_sio: Adding VID and PID for Tellstick
  UHCI: Eliminate asynchronous skeleton Queue Headers
  UHCI: Add macros for computing DMA values
  USB: Davicom DM9601 usbnet driver
  USB: asix.c - Add JVC-PRX1 ids
  usbmon: Remove erroneous __exit
  USB: add driver for iowarrior devices.
  USB: option: add a bunch of new device ids
  USB: option: remove duplicate device id table

Documentation/kernel-parameters.txt

@@ -1758,6 +1758,13 @@ and is between 256 and 4096 characters. It is defined in the file
 			Note that genuine overcurrent events won't be
 			reported either.
 
+	usbcore.autosuspend=
+			[USB] The autosuspend time delay (in seconds) used
+			for newly-detected USB devices (default 2).  This
+			is the time required before an idle device will be
+			autosuspended.  Devices for which the delay is set
+			to 0 won't be autosuspended at all.
+
 	usbhid.mousepoll=
 			[USBHID] The interval which mice are to be polled at.
 

MAINTAINERS

@@ -3392,6 +3392,13 @@ L:	linux-usb-devel@lists.sourceforge.net
 S:	Maintained
 W:	http://www.kroah.com/linux-usb/
 
+USB DAVICOM DM9601 DRIVER
+P:	Peter Korsgaard
+M:	jacmet@sunsite.dk
+L:	linux-usb-devel@lists.sourceforge.net
+W:	http://www.linux-usb.org/usbnet
+S:	Maintained
+
 USB EHCI DRIVER
 P:	David Brownell
 M:	dbrownell@users.sourceforge.net

drivers/usb/core/Makefile

@@ -4,7 +4,7 @@
 
 usbcore-objs	:= usb.o hub.o hcd.o urb.o message.o driver.o \
 			config.o file.o buffer.o sysfs.o endpoint.o \
-			devio.o notify.o generic.o
+			devio.o notify.o generic.o quirks.o
 
 ifeq ($(CONFIG_PCI),y)
 	usbcore-objs	+= hcd-pci.o

drivers/usb/core/driver.c

@@ -366,19 +366,8 @@ void usb_driver_release_interface(struct usb_driver *driver,
 EXPORT_SYMBOL(usb_driver_release_interface);
 
 /* returns 0 if no match, 1 if match */
-int usb_match_one_id(struct usb_interface *interface,
-		     const struct usb_device_id *id)
+int usb_match_device(struct usb_device *dev, const struct usb_device_id *id)
 {
-	struct usb_host_interface *intf;
-	struct usb_device *dev;
-
-	/* proc_connectinfo in devio.c may call us with id == NULL. */
-	if (id == NULL)
-		return 0;
-
-	intf = interface->cur_altsetting;
-	dev = interface_to_usbdev(interface);
-
 	if ((id->match_flags & USB_DEVICE_ID_MATCH_VENDOR) &&
 	    id->idVendor != le16_to_cpu(dev->descriptor.idVendor))
 		return 0;
@@ -409,6 +398,26 @@ int usb_match_one_id(struct usb_interface *interface,
 	    (id->bDeviceProtocol != dev->descriptor.bDeviceProtocol))
 		return 0;
 
+	return 1;
+}
+
+/* returns 0 if no match, 1 if match */
+int usb_match_one_id(struct usb_interface *interface,
+		     const struct usb_device_id *id)
+{
+	struct usb_host_interface *intf;
+	struct usb_device *dev;
+
+	/* proc_connectinfo in devio.c may call us with id == NULL. */
+	if (id == NULL)
+		return 0;
+
+	intf = interface->cur_altsetting;
+	dev = interface_to_usbdev(interface);
+
+	if (!usb_match_device(dev, id))
+		return 0;
+
 	/* The interface class, subclass, and protocol should never be
 	 * checked for a match if the device class is Vendor Specific,
 	 * unless the match record specifies the Vendor ID. */
@@ -954,12 +963,16 @@ static int autosuspend_check(struct usb_device *udev)
 	int			i;
 	struct usb_interface	*intf;
 
-	/* For autosuspend, fail fast if anything is in use.
-	 * Also fail if any interfaces require remote wakeup but it
-	 * isn't available. */
+	/* For autosuspend, fail fast if anything is in use or autosuspend
+	 * is disabled.  Also fail if any interfaces require remote wakeup
+	 * but it isn't available.
+	 */
 	udev->do_remote_wakeup = device_may_wakeup(&udev->dev);
 	if (udev->pm_usage_cnt > 0)
 		return -EBUSY;
+	if (!udev->autosuspend_delay)
+		return -EPERM;
+
 	if (udev->actconfig) {
 		for (i = 0; i < udev->actconfig->desc.bNumInterfaces; i++) {
 			intf = udev->actconfig->interface[i];
@@ -982,7 +995,7 @@ static int autosuspend_check(struct usb_device *udev)
 
 #define autosuspend_check(udev)		0
 
-#endif
+#endif	/* CONFIG_USB_SUSPEND */
 
 /**
  * usb_suspend_both - suspend a USB device and its interfaces
@@ -1177,7 +1190,7 @@ static int usb_autopm_do_device(struct usb_device *udev, int inc_usage_cnt)
 			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,
-				USB_AUTOSUSPEND_DELAY);
+				udev->autosuspend_delay);
 	usb_pm_unlock(udev);
 	return status;
 }
@@ -1211,6 +1224,26 @@ void usb_autosuspend_device(struct usb_device *udev)
 	//		__FUNCTION__, udev->pm_usage_cnt);
 }
 
+/**
+ * usb_try_autosuspend_device - attempt an autosuspend of a USB device and its interfaces
+ * @udev: the usb_device to autosuspend
+ *
+ * This routine should be called when a core subsystem thinks @udev may
+ * be ready to autosuspend.
+ *
+ * @udev's usage counter left unchanged.  If it or any of the usage counters
+ * for an active interface is greater than 0, or autosuspend is not allowed
+ * for any other reason, no autosuspend request will be queued.
+ *
+ * This routine can run only in process context.
+ */
+void usb_try_autosuspend_device(struct usb_device *udev)
+{
+	usb_autopm_do_device(udev, 0);
+	// dev_dbg(&udev->dev, "%s: cnt %d\n",
+	// 		__FUNCTION__, udev->pm_usage_cnt);
+}
+
 /**
  * usb_autoresume_device - immediately autoresume a USB device and its interfaces
  * @udev: the usb_device to autoresume
@@ -1261,7 +1294,7 @@ static int usb_autopm_do_interface(struct usb_interface *intf,
 				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,
-					USB_AUTOSUSPEND_DELAY);
+					udev->autosuspend_delay);
 	}
 	usb_pm_unlock(udev);
 	return status;

drivers/usb/core/hub.c

@@ -1287,6 +1287,9 @@ int usb_new_device(struct usb_device *udev)
 	if (!try_module_get(THIS_MODULE))
 		return -EINVAL;
 
+	/* Determine quirks */
+	usb_detect_quirks(udev);
+
 	err = usb_get_configuration(udev);
 	if (err < 0) {
 		dev_err(&udev->dev, "can't read configurations, error %d\n",

drivers/usb/core/message.c

@@ -11,6 +11,7 @@
 #include <linux/timer.h>
 #include <linux/ctype.h>
 #include <linux/device.h>
+#include <linux/usb/quirks.h>
 #include <asm/byteorder.h>
 #include <asm/scatterlist.h>
 
@@ -685,7 +686,10 @@ static int usb_string_sub(struct usb_device *dev, unsigned int langid,
 
 	/* Try to read the string descriptor by asking for the maximum
 	 * possible number of bytes */
-	rc = usb_get_string(dev, langid, index, buf, 255);
+	if (dev->quirks & USB_QUIRK_STRING_FETCH_255)
+		rc = -EIO;
+	else
+		rc = usb_get_string(dev, langid, index, buf, 255);
 
 	/* If that failed try to read the descriptor length, then
 	 * ask for just that many bytes */

drivers/usb/core/quirks.c

+/*
+ * USB device quirk handling logic and table
+ *
+ * Copyright (c) 2007 Oliver Neukum
+ * Copyright (c) 2007 Greg Kroah-Hartman <gregkh@suse.de>
+ *
+ * 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, version 2.
+ *
+ *
+ */
+
+#include <linux/usb.h>
+#include <linux/usb/quirks.h>
+#include "usb.h"
+
+/* List of quirky USB devices.  Please keep this list ordered by:
+ * 	1) Vendor ID
+ * 	2) Product ID
+ * 	3) Class ID
+ *
+ * as we want specific devices to be overridden first, and only after that, any
+ * class specific quirks.
+ *
+ * Right now the logic aborts if it finds a valid device in the table, we might
+ * want to change that in the future if it turns out that a whole class of
+ * devices is broken...
+ */
+static const struct usb_device_id usb_quirk_list[] = {
+	/* HP 5300/5370C scanner */
+	{ USB_DEVICE(0x03f0, 0x0701), .driver_info = USB_QUIRK_STRING_FETCH_255 },
+
+	/* Elsa MicroLink 56k (V.250) */
+	{ USB_DEVICE(0x05cc, 0x2267), .driver_info = USB_QUIRK_NO_AUTOSUSPEND },
+
+	{ }  /* terminating entry must be last */
+};
+
+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;
+#endif
+}
+
+static const struct usb_device_id *find_id(struct usb_device *udev)
+{
+	const struct usb_device_id *id = usb_quirk_list;
+
+	for (; id->idVendor || id->bDeviceClass || id->bInterfaceClass ||
+			id->driver_info; id++) {
+		if (usb_match_device(udev, id))
+			return id;
+	}
+	return NULL;
+}
+
+/*
+ * Detect any quirks the device has, and do any housekeeping for it if needed.
+ */
+void usb_detect_quirks(struct usb_device *udev)
+{
+	const struct usb_device_id *id = usb_quirk_list;
+
+	id = find_id(udev);
+	if (id)
+		udev->quirks = (u32)(id->driver_info);
+	if (udev->quirks)
+		dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
+				udev->quirks);
+
+	/* do any special quirk handling here if needed */
+	if (udev->quirks & USB_QUIRK_NO_AUTOSUSPEND)
+		usb_autosuspend_quirk(udev);
+}

drivers/usb/core/sysfs.c

@@ -148,6 +148,75 @@ show_maxchild(struct device *dev, struct device_attribute *attr, char *buf)
 }
 static DEVICE_ATTR(maxchild, S_IRUGO, show_maxchild, NULL);
 
+static ssize_t
+show_quirks(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct usb_device *udev;
+
+	udev = to_usb_device(dev);
+	return sprintf(buf, "0x%x\n", udev->quirks);
+}
+static DEVICE_ATTR(quirks, S_IRUGO, show_quirks, NULL);
+
+#ifdef	CONFIG_USB_SUSPEND
+
+static ssize_t
+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);
+}
+
+static ssize_t
+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;
+
+	if (sscanf(buf, "%u", &value) != 1 || value >= INT_MAX/HZ)
+		return -EINVAL;
+	value *= HZ;
+
+	old = udev->autosuspend_delay;
+	udev->autosuspend_delay = value;
+	if (value > 0 && old == 0)
+		usb_try_autosuspend_device(udev);
+
+	return count;
+}
+
+static DEVICE_ATTR(autosuspend, S_IRUGO | S_IWUSR,
+		show_autosuspend, set_autosuspend);
+
+static char power_group[] = "power";
+
+static int add_power_attributes(struct device *dev)
+{
+	int rc = 0;
+
+	if (is_usb_device(dev))
+		rc = sysfs_add_file_to_group(&dev->kobj,
+				&dev_attr_autosuspend.attr,
+				power_group);
+	return rc;
+}
+
+static void remove_power_attributes(struct device *dev)
+{
+	sysfs_remove_file_from_group(&dev->kobj,
+			&dev_attr_autosuspend.attr,
+			power_group);
+}
+
+#else
+
+#define add_power_attributes(dev)	0
+#define remove_power_attributes(dev)	do {} while (0)
+
+#endif	/* CONFIG_USB_SUSPEND */
+
 /* Descriptor fields */
 #define usb_descriptor_attr_le16(field, format_string)			\
 static ssize_t								\
@@ -204,6 +273,7 @@ static struct attribute *dev_attrs[] = {
 	&dev_attr_devnum.attr,
 	&dev_attr_version.attr,
 	&dev_attr_maxchild.attr,
+	&dev_attr_quirks.attr,
 	NULL,
 };
 static struct attribute_group dev_attr_grp = {
@@ -219,6 +289,10 @@ int usb_create_sysfs_dev_files(struct usb_device *udev)
 	if (retval)
 		return retval;
 
+	retval = add_power_attributes(dev);
+	if (retval)
+		goto error;
+
 	if (udev->manufacturer) {
 		retval = device_create_file(dev, &dev_attr_manufacturer);
 		if (retval)
@@ -239,10 +313,7 @@ int usb_create_sysfs_dev_files(struct usb_device *udev)
 		goto error;
 	return 0;
 error:
-	usb_remove_ep_files(&udev->ep0);
-	device_remove_file(dev, &dev_attr_manufacturer);
-	device_remove_file(dev, &dev_attr_product);
-	device_remove_file(dev, &dev_attr_serial);
+	usb_remove_sysfs_dev_files(udev);
 	return retval;
 }
 
@@ -251,14 +322,11 @@ void usb_remove_sysfs_dev_files(struct usb_device *udev)
 	struct device *dev = &udev->dev;
 
 	usb_remove_ep_files(&udev->ep0);
+	device_remove_file(dev, &dev_attr_manufacturer);
+	device_remove_file(dev, &dev_attr_product);
+	device_remove_file(dev, &dev_attr_serial);
+	remove_power_attributes(dev);
 	sysfs_remove_group(&dev->kobj, &dev_attr_grp);
-
-	if (udev->manufacturer)
-		device_remove_file(dev, &dev_attr_manufacturer);
-	if (udev->product)
-		device_remove_file(dev, &dev_attr_product);
-	if (udev->serial)
-		device_remove_file(dev, &dev_attr_serial);
 }
 
 /* Interface fields */
@@ -362,33 +430,28 @@ static inline void usb_remove_intf_ep_files(struct usb_interface *intf)
 
 int usb_create_sysfs_intf_files(struct usb_interface *intf)
 {
+	struct device *dev = &intf->dev;
 	struct usb_device *udev = interface_to_usbdev(intf);
 	struct usb_host_interface *alt = intf->cur_altsetting;
 	int retval;
 
-	retval = sysfs_create_group(&intf->dev.kobj, &intf_attr_grp);
+	retval = sysfs_create_group(&dev->kobj, &intf_attr_grp);
 	if (retval)
-		goto error;
+		return retval;
 
 	if (alt->string == NULL)
 		alt->string = usb_cache_string(udev, alt->desc.iInterface);
 	if (alt->string)
-		retval = device_create_file(&intf->dev, &dev_attr_interface);
+		retval = device_create_file(dev, &dev_attr_interface);
 	usb_create_intf_ep_files(intf, udev);
 	return 0;
-error:
-	if (alt->string)
-		device_remove_file(&intf->dev, &dev_attr_interface);
-	sysfs_remove_group(&intf->dev.kobj, &intf_attr_grp);
-	usb_remove_intf_ep_files(intf);
-	return retval;
 }
 
 void usb_remove_sysfs_intf_files(struct usb_interface *intf)
 {
-	usb_remove_intf_ep_files(intf);
-	sysfs_remove_group(&intf->dev.kobj, &intf_attr_grp);
+	struct device *dev = &intf->dev;
 
-	if (intf->cur_altsetting->string)
-		device_remove_file(&intf->dev, &dev_attr_interface);
+	usb_remove_intf_ep_files(intf);
+	device_remove_file(dev, &dev_attr_interface);
+	sysfs_remove_group(&dev->kobj, &intf_attr_grp);
 }

drivers/usb/core/usb.c

@@ -22,6 +22,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/moduleparam.h>
 #include <linux/string.h>
 #include <linux/bitops.h>
 #include <linux/slab.h>
@@ -50,6 +51,16 @@ static int nousb;	/* Disable USB when built into kernel image */
 
 struct workqueue_struct *ksuspend_usb_wq;	/* For autosuspend */
 
+#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_PARM_DESC(autosuspend, "default autosuspend delay");
+
+#else
+#define usb_autosuspend_delay		0
+#endif
+
 
 /**
  * usb_ifnum_to_if - get the interface object with a given interface number
@@ -306,6 +317,7 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1)
 #ifdef	CONFIG_PM
 	mutex_init(&dev->pm_mutex);
 	INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work);
+	dev->autosuspend_delay = usb_autosuspend_delay * HZ;
 #endif
 	return dev;
 }

drivers/usb/core/usb.h

@@ -13,6 +13,7 @@ extern void usb_disable_interface (struct usb_device *dev,
 		struct usb_interface *intf);
 extern void usb_release_interface_cache(struct kref *ref);
 extern void usb_disable_device (struct usb_device *dev, int skip_ep0);
+extern void usb_detect_quirks(struct usb_device *udev);
 
 extern int usb_get_device_descriptor(struct usb_device *dev,
 		unsigned int size);
@@ -21,6 +22,8 @@ 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);
 
 extern int  usb_hub_init(void);
 extern void usb_hub_cleanup(void);
@@ -62,14 +65,14 @@ static inline void usb_pm_unlock(struct usb_device *udev) {}
 
 #ifdef CONFIG_USB_SUSPEND
 
-#define USB_AUTOSUSPEND_DELAY	(HZ*2)
-
 extern void usb_autosuspend_device(struct usb_device *udev);
+extern void usb_try_autosuspend_device(struct usb_device *udev);
 extern int usb_autoresume_device(struct usb_device *udev);
 
 #else
 
-#define usb_autosuspend_device(udev)	do {} while (0)
+#define usb_autosuspend_device(udev)		do {} while (0)
+#define usb_try_autosuspend_device(udev)	do {} while (0)
 static inline int usb_autoresume_device(struct usb_device *udev)
 {
 	return 0;

drivers/usb/gadget/inode.c

@@ -553,6 +553,7 @@ static ssize_t ep_aio_read_retry(struct kiocb *iocb)
 {
 	struct kiocb_priv	*priv = iocb->private;
 	ssize_t			len, total;
+	void			*to_copy;
 	int			i;
 
 	/* we "retry" to get the right mm context for this: */
@@ -560,10 +561,11 @@ static ssize_t ep_aio_read_retry(struct kiocb *iocb)
 	/* copy stuff into user buffers */
 	total = priv->actual;
 	len = 0;
+	to_copy = priv->buf;
 	for (i=0; i < priv->nr_segs; i++) {
 		ssize_t this = min((ssize_t)(priv->iv[i].iov_len), total);
 
-		if (copy_to_user(priv->iv[i].iov_base, priv->buf, this)) {
+		if (copy_to_user(priv->iv[i].iov_base, to_copy, this)) {
 			if (len == 0)
 				len = -EFAULT;
 			break;
@@ -571,6 +573,7 @@ static ssize_t ep_aio_read_retry(struct kiocb *iocb)
 
 		total -= this;
 		len += this;
+		to_copy += this;
 		if (total == 0)
 			break;
 	}

drivers/usb/host/uhci-debug.c

@@ -196,7 +196,7 @@ static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space)
 		struct uhci_td *td = list_entry(urbp->td_list.next,
 				struct uhci_td, list);
 
-		if (cpu_to_le32(td->dma_handle) != (element & ~UHCI_PTR_BITS))
+		if (element != LINK_TO_TD(td))
 			out += sprintf(out, "%*s Element != First TD\n",
 					space, "");
 		i = nurbs = 0;
@@ -220,16 +220,6 @@ static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space)
 	return out - buf;
 }
 
-static const char * const qh_names[] = {
-  "skel_unlink_qh", "skel_iso_qh",
-  "skel_int128_qh", "skel_int64_qh",
-  "skel_int32_qh", "skel_int16_qh",
-  "skel_int8_qh", "skel_int4_qh",
-  "skel_int2_qh", "skel_int1_qh",
-  "skel_ls_control_qh", "skel_fs_control_qh",
-  "skel_bulk_qh", "skel_term_qh"
-};
-
 static int uhci_show_sc(int port, unsigned short status, char *buf, int len)
 {
 	char *out = buf;
@@ -352,6 +342,12 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
 	struct uhci_td *td;
 	struct list_head *tmp, *head;
 	int nframes, nerrs;
+	__le32 link;
+
+	static const char * const qh_names[] = {
+		"unlink", "iso", "int128", "int64", "int32", "int16",
+		"int8", "int4", "int2", "async", "term"
+	};
 
 	out += uhci_show_root_hub_state(uhci, out, len - (out - buf));
 	out += sprintf(out, "HC status\n");
@@ -374,7 +370,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
 	nframes = 10;
 	nerrs = 0;
 	for (i = 0; i < UHCI_NUMFRAMES; ++i) {
-		__le32 link, qh_dma;
+		__le32 qh_dma;
 
 		j = 0;
 		td = uhci->frame_cpu[i];
@@ -393,7 +389,7 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
 		do {
 			td = list_entry(tmp, struct uhci_td, fl_list);
 			tmp = tmp->next;
-			if (cpu_to_le32(td->dma_handle) != link) {
+			if (link != LINK_TO_TD(td)) {
 				if (nframes > 0)
 					out += sprintf(out, "    link does "
 						"not match list entry!\n");
@@ -430,23 +426,21 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
 
 	for (i = 0; i < UHCI_NUM_SKELQH; ++i) {
 		int cnt = 0;
+		__le32 fsbr_link = 0;
 
 		qh = uhci->skelqh[i];
-		out += sprintf(out, "- %s\n", qh_names[i]); \
+		out += sprintf(out, "- skel_%s_qh\n", qh_names[i]); \
 		out += uhci_show_qh(qh, out, len - (out - buf), 4);
 
 		/* Last QH is the Terminating QH, it's different */
-		if (i == UHCI_NUM_SKELQH - 1) {
-			if (qh->link != UHCI_PTR_TERM)
-				out += sprintf(out, "    bandwidth reclamation on!\n");
-
-			if (qh_element(qh) != cpu_to_le32(uhci->term_td->dma_handle))
+		if (i == SKEL_TERM) {
+			if (qh_element(qh) != LINK_TO_TD(uhci->term_td))
 				out += sprintf(out, "    skel_term_qh element is not set to term_td!\n");
-
+			if (link == LINK_TO_QH(uhci->skel_term_qh))
+				goto check_qh_link;
 			continue;
 		}
 
-		j = (i < 9) ? 9 : i+1;		/* Next skeleton */
 		head = &qh->node;
 		tmp = head->next;
 
@@ -456,15 +450,26 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
 			if (++cnt <= 10)
 				out += uhci_show_qh(qh, out,
 						len - (out - buf), 4);
+			if (!fsbr_link && qh->skel >= SKEL_FSBR)
+				fsbr_link = LINK_TO_QH(qh);
 		}
 		if ((cnt -= 10) > 0)
 			out += sprintf(out, "    Skipped %d QHs\n", cnt);
 
-		if (i > 1 && i < UHCI_NUM_SKELQH - 1) {
-			if (qh->link !=
-			    (cpu_to_le32(uhci->skelqh[j]->dma_handle) | UHCI_PTR_QH))
-				out += sprintf(out, "    last QH not linked to next skeleton!\n");
-		}
+		link = UHCI_PTR_TERM;
+		if (i <= SKEL_ISO)
+			;
+		else if (i < SKEL_ASYNC)
+			link = LINK_TO_QH(uhci->skel_async_qh);
+		else if (!uhci->fsbr_is_on)
+			;
+		else if (fsbr_link)
+			link = fsbr_link;
+		else
+			link = LINK_TO_QH(uhci->skel_term_qh);
+check_qh_link:
+		if (qh->link != link)
+			out += sprintf(out, "    last QH not linked to next skeleton!\n");
 	}
 
 	return out - buf;

drivers/usb/host/uhci-hcd.c

@@ -13,7 +13,7 @@
  * (C) Copyright 2000 Yggdrasil Computing, Inc. (port of new PCI interface
  *               support from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
  * (C) Copyright 1999 Gregory P. Smith (from usb-ohci.c)
- * (C) Copyright 2004-2006 Alan Stern, stern@rowland.harvard.edu
+ * (C) Copyright 2004-2007 Alan Stern, stern@rowland.harvard.edu
  *
  * Intel documents this fairly well, and as far as I know there
  * are no royalties or anything like that, but even so there are
@@ -107,16 +107,16 @@ static __le32 uhci_frame_skel_link(struct uhci_hcd *uhci, int frame)
 	 * interrupt QHs, which will help spread out bandwidth utilization.
 	 *
 	 * ffs (Find First bit Set) does exactly what we need:
-	 * 1,3,5,...  => ffs = 0 => use skel_int2_qh = skelqh[8],
-	 * 2,6,10,... => ffs = 1 => use skel_int4_qh = skelqh[7], etc.
+	 * 1,3,5,...  => ffs = 0 => use period-2 QH = skelqh[8],
+	 * 2,6,10,... => ffs = 1 => use period-4 QH = skelqh[7], etc.
 	 * ffs >= 7 => not on any high-period queue, so use
-	 *	skel_int1_qh = skelqh[9].
+	 *	period-1 QH = skelqh[9].
 	 * Add in UHCI_NUMFRAMES to insure at least one bit is set.
 	 */
 	skelnum = 8 - (int) __ffs(frame | UHCI_NUMFRAMES);
 	if (skelnum <= 1)
 		skelnum = 9;
-	return UHCI_PTR_QH | cpu_to_le32(uhci->skelqh[skelnum]->dma_handle);
+	return LINK_TO_QH(uhci->skelqh[skelnum]);
 }
 
 #include "uhci-debug.c"
@@ -540,16 +540,18 @@ static void uhci_shutdown(struct pci_dev *pdev)
  *
  * The hardware doesn't really know any difference
  * in the queues, but the order does matter for the
- * protocols higher up. The order is:
+ * protocols higher up.  The order in which the queues
+ * are encountered by the hardware is:
  *
- *  - any isochronous events handled before any
+ *  - All isochronous events are handled before any
  *    of the queues. We don't do that here, because
  *    we'll create the actual TD entries on demand.
- *  - The first queue is the interrupt queue.
- *  - The second queue is the control queue, split into low- and full-speed
- *  - The third queue is bulk queue.
- *  - The fourth queue is the bandwidth reclamation queue, which loops back
- *    to the full-speed control queue.
+ *  - The first queue is the high-period interrupt queue.
+ *  - The second queue is the period-1 interrupt and async
+ *    (low-speed control, full-speed control, then bulk) queue.
+ *  - The third queue is the terminating bandwidth reclamation queue,
+ *    which contains no members, loops back to itself, and is present
+ *    only when FSBR is on and there are no full-speed control or bulk QHs.
  */
 static int uhci_start(struct usb_hcd *hcd)
 {
@@ -626,34 +628,18 @@ static int uhci_start(struct usb_hcd *hcd)
 	}
 
 	/*
-	 * 8 Interrupt queues; link all higher int queues to int1,
-	 * then link int1 to control and control to bulk
+	 * 8 Interrupt queues; link all higher int queues to int1 = async
 	 */
-	uhci->skel_int128_qh->link =
-			uhci->skel_int64_qh->link =
-			uhci->skel_int32_qh->link =
-			uhci->skel_int16_qh->link =
-			uhci->skel_int8_qh->link =
-			uhci->skel_int4_qh->link =
-			uhci->skel_int2_qh->link = UHCI_PTR_QH |
-			cpu_to_le32(uhci->skel_int1_qh->dma_handle);
-
-	uhci->skel_int1_qh->link = UHCI_PTR_QH |
-			cpu_to_le32(uhci->skel_ls_control_qh->dma_handle);
-	uhci->skel_ls_control_qh->link = UHCI_PTR_QH |
-			cpu_to_le32(uhci->skel_fs_control_qh->dma_handle);
-	uhci->skel_fs_control_qh->link = UHCI_PTR_QH |
-			cpu_to_le32(uhci->skel_bulk_qh->dma_handle);
-	uhci->skel_bulk_qh->link = UHCI_PTR_QH |
-			cpu_to_le32(uhci->skel_term_qh->dma_handle);
+	for (i = SKEL_ISO + 1; i < SKEL_ASYNC; ++i)
+		uhci->skelqh[i]->link = LINK_TO_QH(uhci->skel_async_qh);
+	uhci->skel_async_qh->link = uhci->skel_term_qh->link = UHCI_PTR_TERM;
 
 	/* This dummy TD is to work around a bug in Intel PIIX controllers */
 	uhci_fill_td(uhci->term_td, 0, uhci_explen(0) |
-		(0x7f << TD_TOKEN_DEVADDR_SHIFT) | USB_PID_IN, 0);
-	uhci->term_td->link = cpu_to_le32(uhci->term_td->dma_handle);
-
-	uhci->skel_term_qh->link = UHCI_PTR_TERM;
-	uhci->skel_term_qh->element = cpu_to_le32(uhci->term_td->dma_handle);
+			(0x7f << TD_TOKEN_DEVADDR_SHIFT) | USB_PID_IN, 0);
+	uhci->term_td->link = UHCI_PTR_TERM;
+	uhci->skel_async_qh->element = uhci->skel_term_qh->element =
+			LINK_TO_TD(uhci->term_td);
 
 	/*
 	 * Fill the frame list: make all entries point to the proper

drivers/usb/host/uhci-hcd.h

@@ -129,11 +129,12 @@ struct uhci_qh {
 	__le32 element;			/* Queue element (TD) pointer */
 
 	/* Software fields */
+	dma_addr_t dma_handle;
+
 	struct list_head node;		/* Node in the list of QHs */
 	struct usb_host_endpoint *hep;	/* Endpoint information */
 	struct usb_device *udev;
 	struct list_head queue;		/* Queue of urbps for this QH */
-	struct uhci_qh *skel;		/* Skeleton for this QH */
 	struct uhci_td *dummy_td;	/* Dummy TD to end the queue */
 	struct uhci_td *post_td;	/* Last TD completed */
 
@@ -149,8 +150,7 @@ struct uhci_qh {
 
 	int state;			/* QH_STATE_xxx; see above */
 	int type;			/* Queue type (control, bulk, etc) */
-
-	dma_addr_t dma_handle;
+	int skel;			/* Skeleton queue number */
 
 	unsigned int initial_toggle:1;	/* Endpoint's current toggle value */
 	unsigned int needs_fixup:1;	/* Must fix the TD toggle values */
@@ -171,6 +171,8 @@ static inline __le32 qh_element(struct uhci_qh *qh) {
 	return element;
 }
 
+#define LINK_TO_QH(qh)		(UHCI_PTR_QH | cpu_to_le32((qh)->dma_handle))
+
 
 /*
  *	Transfer Descriptors
@@ -264,6 +266,8 @@ static inline u32 td_status(struct uhci_td *td) {
 	return le32_to_cpu(status);
 }
 
+#define LINK_TO_TD(td)		(cpu_to_le32((td)->dma_handle))
+
 
 /*
  *	Skeleton Queue Headers
@@ -272,12 +276,13 @@ static inline u32 td_status(struct uhci_td *td) {
 /*
  * The UHCI driver uses QHs with Interrupt, Control and Bulk URBs for
  * automatic queuing. To make it easy to insert entries into the schedule,
- * we have a skeleton of QHs for each predefined Interrupt latency,
- * low-speed control, full-speed control, bulk, and terminating QH
- * (see explanation for the terminating QH below).
+ * we have a skeleton of QHs for each predefined Interrupt latency.
+ * Asynchronous QHs (low-speed control, full-speed control, and bulk)
+ * go onto the period-1 interrupt list, since they all get accessed on
+ * every frame.
  *
- * When we want to add a new QH, we add it to the end of the list for the
- * skeleton QH.  For instance, the schedule list can look like this:
+ * When we want to add a new QH, we add it to the list starting from the
+ * appropriate skeleton QH.  For instance, the schedule can look like this:
  *
  * skel int128 QH
  * dev 1 interrupt QH
@@ -285,50 +290,47 @@ static inline u32 td_status(struct uhci_td *td) {
  * skel int64 QH
  * skel int32 QH
  * ...
- * skel int1 QH
- * skel low-speed control QH
- * dev 5 control QH
- * skel full-speed control QH
- * skel bulk QH
+ * skel int1 + async QH
+ * dev 5 low-speed control QH
  * dev 1 bulk QH
  * dev 2 bulk QH
- * skel terminating QH
  *
- * The terminating QH is used for 2 reasons:
- * - To place a terminating TD which is used to workaround a PIIX bug
- *   (see Intel errata for explanation), and
- * - To loop back to the full-speed control queue for full-speed bandwidth
- *   reclamation.
+ * There is a special terminating QH used to keep full-speed bandwidth
+ * reclamation active when no full-speed control or bulk QHs are linked
+ * into the schedule.  It has an inactive TD (to work around a PIIX bug,
+ * see the Intel errata) and it points back to itself.
  *
- * There's a special skeleton QH for Isochronous QHs.  It never appears
- * on the schedule, and Isochronous TDs go on the schedule before the
+ * There's a special skeleton QH for Isochronous QHs which never appears
+ * on the schedule.  Isochronous TDs go on the schedule before the
  * the skeleton QHs.  The hardware accesses them directly rather than
  * through their QH, which is used only for bookkeeping purposes.
  * While the UHCI spec doesn't forbid the use of QHs for Isochronous,
  * it doesn't use them either.  And the spec says that queues never
  * advance on an error completion status, which makes them totally
  * unsuitable for Isochronous transfers.
+ *
+ * There's also a special skeleton QH used for QHs which are in the process
+ * of unlinking and so may still be in use by the hardware.  It too never
+ * appears on the schedule.
  */
 
-#define UHCI_NUM_SKELQH		14
-#define skel_unlink_qh		skelqh[0]
-#define skel_iso_qh		skelqh[1]
-#define skel_int128_qh		skelqh[2]
-#define skel_int64_qh		skelqh[3]
-#define skel_int32_qh		skelqh[4]
-#define skel_int16_qh		skelqh[5]
-#define skel_int8_qh		skelqh[6]
-#define skel_int4_qh		skelqh[7]
-#define skel_int2_qh		skelqh[8]
-#define skel_int1_qh		skelqh[9]
-#define skel_ls_control_qh	skelqh[10]
-#define skel_fs_control_qh	skelqh[11]
-#define skel_bulk_qh		skelqh[12]
-#define skel_term_qh		skelqh[13]
-
-/* Find the skelqh entry corresponding to an interval exponent */
-#define UHCI_SKEL_INDEX(exponent)	(9 - exponent)
-
+#define UHCI_NUM_SKELQH		11
+#define SKEL_UNLINK		0
+#define skel_unlink_qh		skelqh[SKEL_UNLINK]
+#define SKEL_ISO		1
+#define skel_iso_qh		skelqh[SKEL_ISO]
+	/* int128, int64, ..., int1 = 2, 3, ..., 9 */
+#define SKEL_INDEX(exponent)	(9 - exponent)
+#define SKEL_ASYNC		9
+#define skel_async_qh		skelqh[SKEL_ASYNC]
+#define SKEL_TERM		10
+#define skel_term_qh		skelqh[SKEL_TERM]
+
+/* The following entries refer to sublists of skel_async_qh */
+#define SKEL_LS_CONTROL		20
+#define SKEL_FS_CONTROL		21
+#define SKEL_FSBR		SKEL_FS_CONTROL
+#define SKEL_BULK		22
 
 /*
  *	The UHCI controller and root hub

drivers/usb/host/uhci-q.c

@@ -13,7 +13,7 @@
  * (C) Copyright 2000 Yggdrasil Computing, Inc. (port of new PCI interface
  *               support from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
  * (C) Copyright 1999 Gregory P. Smith (from usb-ohci.c)
- * (C) Copyright 2004-2006 Alan Stern, stern@rowland.harvard.edu
+ * (C) Copyright 2004-2007 Alan Stern, stern@rowland.harvard.edu
  */
 
 
@@ -45,15 +45,43 @@ static inline void uhci_clear_next_interrupt(struct uhci_hcd *uhci)
  */
 static void uhci_fsbr_on(struct uhci_hcd *uhci)
 {
+	struct uhci_qh *fsbr_qh, *lqh, *tqh;
+
 	uhci->fsbr_is_on = 1;
-	uhci->skel_term_qh->link = cpu_to_le32(
-			uhci->skel_fs_control_qh->dma_handle) | UHCI_PTR_QH;
+	lqh = list_entry(uhci->skel_async_qh->node.prev,
+			struct uhci_qh, node);
+
+	/* Find the first FSBR QH.  Linear search through the list is
+	 * acceptable because normally FSBR gets turned on as soon as
+	 * one QH needs it. */
+	fsbr_qh = NULL;
+	list_for_each_entry_reverse(tqh, &uhci->skel_async_qh->node, node) {
+		if (tqh->skel < SKEL_FSBR)
+			break;
+		fsbr_qh = tqh;
+	}
+
+	/* No FSBR QH means we must insert the terminating skeleton QH */
+	if (!fsbr_qh) {
+		uhci->skel_term_qh->link = LINK_TO_QH(uhci->skel_term_qh);
+		wmb();
+		lqh->link = uhci->skel_term_qh->link;
+
+	/* Otherwise loop the last QH to the first FSBR QH */
+	} else
+		lqh->link = LINK_TO_QH(fsbr_qh);
 }
 
 static void uhci_fsbr_off(struct uhci_hcd *uhci)
 {
+	struct uhci_qh *lqh;
+
 	uhci->fsbr_is_on = 0;
-	uhci->skel_term_qh->link = UHCI_PTR_TERM;
+	lqh = list_entry(uhci->skel_async_qh->node.prev,
+			struct uhci_qh, node);
+
+	/* End the async list normally and unlink the terminating QH */
+	lqh->link = uhci->skel_term_qh->link = UHCI_PTR_TERM;
 }
 
 static void uhci_add_fsbr(struct uhci_hcd *uhci, struct urb *urb)
@@ -158,11 +186,11 @@ static inline void uhci_insert_td_in_frame_list(struct uhci_hcd *uhci,
 
 		td->link = ltd->link;
 		wmb();
-		ltd->link = cpu_to_le32(td->dma_handle);
+		ltd->link = LINK_TO_TD(td);
 	} else {
 		td->link = uhci->frame[framenum];
 		wmb();
-		uhci->frame[framenum] = cpu_to_le32(td->dma_handle);
+		uhci->frame[framenum] = LINK_TO_TD(td);
 		uhci->frame_cpu[framenum] = td;
 	}
 }
@@ -184,7 +212,7 @@ static inline void uhci_remove_td_from_frame_list(struct uhci_hcd *uhci,
 			struct uhci_td *ntd;
 
 			ntd = list_entry(td->fl_list.next, struct uhci_td, fl_list);
-			uhci->frame[td->frame] = cpu_to_le32(ntd->dma_handle);
+			uhci->frame[td->frame] = LINK_TO_TD(ntd);
 			uhci->frame_cpu[td->frame] = ntd;
 		}
 	} else {
@@ -405,12 +433,81 @@ static void uhci_fixup_toggles(struct uhci_qh *qh, int skip_first)
 }
 
 /*
- * Put a QH on the schedule in both hardware and software
+ * Link an Isochronous QH into its skeleton's list
  */
-static void uhci_activate_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
+static inline void link_iso(struct uhci_hcd *uhci, struct uhci_qh *qh)
+{
+	list_add_tail(&qh->node, &uhci->skel_iso_qh->node);
+
+	/* Isochronous QHs aren't linked by the hardware */
+}
+
+/*
+ * Link a high-period interrupt QH into the schedule at the end of its
+ * skeleton's list
+ */
+static void link_interrupt(struct uhci_hcd *uhci, struct uhci_qh *qh)
 {
 	struct uhci_qh *pqh;
 
+	list_add_tail(&qh->node, &uhci->skelqh[qh->skel]->node);
+
+	pqh = list_entry(qh->node.prev, struct uhci_qh, node);
+	qh->link = pqh->link;
+	wmb();
+	pqh->link = LINK_TO_QH(qh);
+}
+
+/*
+ * Link a period-1 interrupt or async QH into the schedule at the
+ * correct spot in the async skeleton's list, and update the FSBR link
+ */
+static void link_async(struct uhci_hcd *uhci, struct uhci_qh *qh)
+{
+	struct uhci_qh *pqh, *lqh;
+	__le32 link_to_new_qh;
+	__le32 *extra_link = &link_to_new_qh;
+
+	/* Find the predecessor QH for our new one and insert it in the list.
+	 * The list of QHs is expected to be short, so linear search won't
+	 * take too long. */
+	list_for_each_entry_reverse(pqh, &uhci->skel_async_qh->node, node) {
+		if (pqh->skel <= qh->skel)
+			break;
+	}
+	list_add(&qh->node, &pqh->node);
+	qh->link = pqh->link;
+
+	link_to_new_qh = LINK_TO_QH(qh);
+
+	/* If this is now the first FSBR QH, take special action */
+	if (uhci->fsbr_is_on && pqh->skel < SKEL_FSBR &&
+			qh->skel >= SKEL_FSBR) {
+		lqh = list_entry(uhci->skel_async_qh->node.prev,
+				struct uhci_qh, node);
+
+		/* If the new QH is also the last one, we must unlink
+		 * the terminating skeleton QH and make the new QH point
+		 * back to itself. */
+		if (qh == lqh) {
+			qh->link = link_to_new_qh;
+			extra_link = &uhci->skel_term_qh->link;
+
+		/* Otherwise the last QH must point to the new QH */
+		} else
+			extra_link = &lqh->link;
+	}
+
+	/* Link it into the schedule */
+	wmb();
+	*extra_link = pqh->link = link_to_new_qh;
+}
+
+/*
+ * Put a QH on the schedule in both hardware and software
+ */
+static void uhci_activate_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
+{
 	WARN_ON(list_empty(&qh->queue));
 
 	/* Set the element pointer if it isn't set already.
@@ -421,7 +518,7 @@ static void uhci_activate_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
 		struct uhci_td *td = list_entry(urbp->td_list.next,
 				struct uhci_td, list);
 
-		qh->element = cpu_to_le32(td->dma_handle);
+		qh->element = LINK_TO_TD(td);
 	}
 
 	/* Treat the queue as if it has just advanced */
@@ -432,18 +529,64 @@ static void uhci_activate_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
 		return;
 	qh->state = QH_STATE_ACTIVE;
 
-	/* Move the QH from its old list to the end of the appropriate
+	/* Move the QH from its old list to the correct spot in the appropriate
 	 * skeleton's list */
 	if (qh == uhci->next_qh)
 		uhci->next_qh = list_entry(qh->node.next, struct uhci_qh,
 				node);
-	list_move_tail(&qh->node, &qh->skel->node);
+	list_del(&qh->node);
+
+	if (qh->skel == SKEL_ISO)
+		link_iso(uhci, qh);
+	else if (qh->skel < SKEL_ASYNC)
+		link_interrupt(uhci, qh);
+	else
+		link_async(uhci, qh);
+}
+
+/*
+ * Unlink a high-period interrupt QH from the schedule
+ */
+static void unlink_interrupt(struct uhci_hcd *uhci, struct uhci_qh *qh)
+{
+	struct uhci_qh *pqh;
 
-	/* Link it into the schedule */
 	pqh = list_entry(qh->node.prev, struct uhci_qh, node);
-	qh->link = pqh->link;
-	wmb();
-	pqh->link = UHCI_PTR_QH | cpu_to_le32(qh->dma_handle);
+	pqh->link = qh->link;
+	mb();
+}
+
+/*
+ * Unlink a period-1 interrupt or async QH from the schedule
+ */
+static void unlink_async(struct uhci_hcd *uhci, struct uhci_qh *qh)
+{
+	struct uhci_qh *pqh, *lqh;
+	__le32 link_to_next_qh = qh->link;
+
+	pqh = list_entry(qh->node.prev, struct uhci_qh, node);
+
+	/* If this is the first FSBQ QH, take special action */
+	if (uhci->fsbr_is_on && pqh->skel < SKEL_FSBR &&
+			qh->skel >= SKEL_FSBR) {
+		lqh = list_entry(uhci->skel_async_qh->node.prev,
+				struct uhci_qh, node);
+
+		/* If this QH is also the last one, we must link in
+		 * the terminating skeleton QH. */
+		if (qh == lqh) {
+			link_to_next_qh = LINK_TO_QH(uhci->skel_term_qh);
+			uhci->skel_term_qh->link = link_to_next_qh;
+			wmb();
+			qh->link = link_to_next_qh;
+
+		/* Otherwise the last QH must point to the new first FSBR QH */
+		} else
+			lqh->link = link_to_next_qh;
+	}
+
+	pqh->link = link_to_next_qh;
+	mb();
 }
 
 /*
@@ -451,17 +594,18 @@ static void uhci_activate_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
  */
 static void uhci_unlink_qh(struct uhci_hcd *uhci, struct uhci_qh *qh)
 {
-	struct uhci_qh *pqh;
-
 	if (qh->state == QH_STATE_UNLINKING)
 		return;
 	WARN_ON(qh->state != QH_STATE_ACTIVE || !qh->udev);
 	qh->state = QH_STATE_UNLINKING;
 
 	/* Unlink the QH from the schedule and record when we did it */
-	pqh = list_entry(qh->node.prev, struct uhci_qh, node);
-	pqh->link = qh->link;
-	mb();
+	if (qh->skel == SKEL_ISO)
+		;
+	else if (qh->skel < SKEL_ASYNC)
+		unlink_interrupt(uhci, qh);
+	else
+		unlink_async(uhci, qh);
 
 	uhci_get_current_frame_number(uhci);
 	qh->unlink_frame = uhci->frame_number;
@@ -697,6 +841,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
 	dma_addr_t data = urb->transfer_dma;
 	__le32 *plink;
 	struct urb_priv *urbp = urb->hcpriv;
+	int skel;
 
 	/* The "pipe" thing contains the destination in bits 8--18 */
 	destination = (urb->pipe & PIPE_DEVEP_MASK) | USB_PID_SETUP;
@@ -737,7 +882,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
 		td = uhci_alloc_td(uhci);
 		if (!td)
 			goto nomem;
-		*plink = cpu_to_le32(td->dma_handle);
+		*plink = LINK_TO_TD(td);
 
 		/* Alternate Data0/1 (start with Data1) */
 		destination ^= TD_TOKEN_TOGGLE;
@@ -757,7 +902,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
 	td = uhci_alloc_td(uhci);
 	if (!td)
 		goto nomem;
-	*plink = cpu_to_le32(td->dma_handle);
+	*plink = LINK_TO_TD(td);
 
 	/*
 	 * It's IN if the pipe is an output pipe or we're not expecting
@@ -784,7 +929,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
 	td = uhci_alloc_td(uhci);
 	if (!td)
 		goto nomem;
-	*plink = cpu_to_le32(td->dma_handle);
+	*plink = LINK_TO_TD(td);
 
 	uhci_fill_td(td, 0, USB_PID_OUT | uhci_explen(0), 0);
 	wmb();
@@ -797,11 +942,13 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb,
 	 * isn't in the CONFIGURED state. */
 	if (urb->dev->speed == USB_SPEED_LOW ||
 			urb->dev->state != USB_STATE_CONFIGURED)
-		qh->skel = uhci->skel_ls_control_qh;
+		skel = SKEL_LS_CONTROL;
 	else {
-		qh->skel = uhci->skel_fs_control_qh;
+		skel = SKEL_FS_CONTROL;
 		uhci_add_fsbr(uhci, urb);
 	}
+	if (qh->state != QH_STATE_ACTIVE)
+		qh->skel = skel;
 
 	urb->actual_length = -8;	/* Account for the SETUP packet */
 	return 0;
@@ -860,7 +1007,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
 			td = uhci_alloc_td(uhci);
 			if (!td)
 				goto nomem;
-			*plink = cpu_to_le32(td->dma_handle);
+			*plink = LINK_TO_TD(td);
 		}
 		uhci_add_td_to_urbp(td, urbp);
 		uhci_fill_td(td, status,
@@ -888,7 +1035,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
 		td = uhci_alloc_td(uhci);
 		if (!td)
 			goto nomem;
-		*plink = cpu_to_le32(td->dma_handle);
+		*plink = LINK_TO_TD(td);
 
 		uhci_add_td_to_urbp(td, urbp);
 		uhci_fill_td(td, status,
@@ -914,7 +1061,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
 	td = uhci_alloc_td(uhci);
 	if (!td)
 		goto nomem;
-	*plink = cpu_to_le32(td->dma_handle);
+	*plink = LINK_TO_TD(td);
 
 	uhci_fill_td(td, 0, USB_PID_OUT | uhci_explen(0), 0);
 	wmb();
@@ -931,7 +1078,7 @@ static int uhci_submit_common(struct uhci_hcd *uhci, struct urb *urb,
 	return -ENOMEM;
 }
 
-static inline int uhci_submit_bulk(struct uhci_hcd *uhci, struct urb *urb,
+static int uhci_submit_bulk(struct uhci_hcd *uhci, struct urb *urb,
 		struct uhci_qh *qh)
 {
 	int ret;
@@ -940,7 +1087,8 @@ static inline int uhci_submit_bulk(struct uhci_hcd *uhci, struct urb *urb,
 	if (urb->dev->speed == USB_SPEED_LOW)
 		return -EINVAL;
 
-	qh->skel = uhci->skel_bulk_qh;
+	if (qh->state != QH_STATE_ACTIVE)
+		qh->skel = SKEL_BULK;
 	ret = uhci_submit_common(uhci, urb, qh);
 	if (ret == 0)
 		uhci_add_fsbr(uhci, urb);
@@ -968,7 +1116,7 @@ static int uhci_submit_interrupt(struct uhci_hcd *uhci, struct urb *urb,
 		if (exponent < 0)
 			return -EINVAL;
 		qh->period = 1 << exponent;
-		qh->skel = uhci->skelqh[UHCI_SKEL_INDEX(exponent)];
+		qh->skel = SKEL_INDEX(exponent);
 
 		/* For now, interrupt phase is fixed by the layout
 		 * of the QH lists. */
@@ -1005,7 +1153,7 @@ static int uhci_fixup_short_transfer(struct uhci_hcd *uhci,
 		 * the queue at the status stage transaction, which is
 		 * the last TD. */
 		WARN_ON(list_empty(&urbp->td_list));
-		qh->element = cpu_to_le32(td->dma_handle);
+		qh->element = LINK_TO_TD(td);
 		tmp = td->list.prev;
 		ret = -EINPROGRESS;
 
@@ -1216,7 +1364,7 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb,
 		qh->iso_status = 0;
 	}
 
-	qh->skel = uhci->skel_iso_qh;
+	qh->skel = SKEL_ISO;
 	if (!qh->bandwidth_reserved)
 		uhci_reserve_bandwidth(uhci, qh);
 	return 0;
@@ -1566,8 +1714,7 @@ static int uhci_advance_check(struct uhci_hcd *uhci, struct uhci_qh *qh)
 	if (time_after(jiffies, qh->advance_jiffies + QH_WAIT_TIMEOUT)) {
 
 		/* Detect the Intel bug and work around it */
-		if (qh->post_td && qh_element(qh) ==
-				cpu_to_le32(qh->post_td->dma_handle)) {
+		if (qh->post_td && qh_element(qh) == LINK_TO_TD(qh->post_td)) {
 			qh->element = qh->post_td->link;
 			qh->advance_jiffies = jiffies;
 			ret = 1;

drivers/usb/input/usbkbd.c

@@ -31,6 +31,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/usb/input.h>
+#include <linux/hid.h>
 
 /*
  * Version Information
@@ -330,7 +331,8 @@ static void usb_kbd_disconnect(struct usb_interface *intf)
 }
 
 static struct usb_device_id usb_kbd_id_table [] = {
-	{ USB_INTERFACE_INFO(3, 1, 1) },
+	{ USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
+		USB_INTERFACE_PROTOCOL_KEYBOARD) },
 	{ }						/* Terminating entry */
 };
 

drivers/usb/input/usbmouse.c

@@ -31,6 +31,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/usb/input.h>
+#include <linux/hid.h>
 
 /*
  * Version Information
@@ -213,7 +214,8 @@ static void usb_mouse_disconnect(struct usb_interface *intf)
 }
 
 static struct usb_device_id usb_mouse_id_table [] = {
-	{ USB_INTERFACE_INFO(3, 1, 2) },
+	{ USB_INTERFACE_INFO(USB_INTERFACE_CLASS_HID, USB_INTERFACE_SUBCLASS_BOOT,
+		USB_INTERFACE_PROTOCOL_MOUSE) },
 	{ }	/* Terminating entry */
 };
 

drivers/usb/input/wacom_wac.c

@@ -163,7 +163,7 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 	}
 
 	id = STYLUS_DEVICE_ID;
-	if (data[1] & 0x10) { /* in prox */
+	if (data[1] & 0x80) { /* in prox */
 
 		switch ((data[1] >> 5) & 3) {
 
@@ -196,9 +196,6 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 					wacom_report_abs(wcombo, ABS_DISTANCE, data[7] & 0x3f);
 				break;
 		}
-	}
-
-	if (data[1] & 0x90) {
 		x = wacom_le16_to_cpu(&data[2]);
 		y = wacom_le16_to_cpu(&data[4]);
 		wacom_report_abs(wcombo, ABS_X, x);
@@ -210,19 +207,28 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 			wacom_report_key(wcombo, BTN_STYLUS2, data[1] & 0x04);
 		}
 		wacom_report_abs(wcombo, ABS_MISC, id); /* report tool id */
-	}
-	else
-		wacom_report_abs(wcombo, ABS_MISC, 0); /* reset tool id */
-
-	if (data[1] & 0x10)  /* only report prox-in when in area */
 		wacom_report_key(wcombo, wacom->tool[0], 1);
-	if (!(data[1] & 0x90))  /* report prox-out when physically out */
+	} else if (!(data[1] & 0x90)) {
+		wacom_report_abs(wcombo, ABS_X, 0);
+		wacom_report_abs(wcombo, ABS_Y, 0);
+		if (wacom->tool[0] == BTN_TOOL_MOUSE) {
+			wacom_report_key(wcombo, BTN_LEFT, 0);
+			wacom_report_key(wcombo, BTN_RIGHT, 0);
+			wacom_report_abs(wcombo, ABS_DISTANCE, 0);
+		} else {
+			wacom_report_abs(wcombo, ABS_PRESSURE, 0);
+			wacom_report_key(wcombo, BTN_TOUCH, 0);
+			wacom_report_key(wcombo, BTN_STYLUS, 0);
+			wacom_report_key(wcombo, BTN_STYLUS2, 0);
+		}
+		wacom_report_abs(wcombo, ABS_MISC, 0); /* reset tool id */
 		wacom_report_key(wcombo, wacom->tool[0], 0);
-	wacom_input_sync(wcombo);
+	}
 
 	/* send pad data */
 	if (wacom->features->type == WACOM_G4) {
-		if ( (wacom->serial[1] & 0xc0) != (data[7] & 0xf8) ) {
+		if (data[7] & 0xf8) {
+			wacom_input_sync(wcombo); /* sync last event */
 			wacom->id[1] = 1;
 			wacom->serial[1] = (data[7] & 0xf8);
 			wacom_report_key(wcombo, BTN_0, (data[7] & 0x40));
@@ -230,10 +236,15 @@ static int wacom_graphire_irq(struct wacom_wac *wacom, void *wcombo)
 			rw = ((data[7] & 0x18) >> 3) - ((data[7] & 0x20) >> 3);
 			wacom_report_rel(wcombo, REL_WHEEL, rw);
 			wacom_report_key(wcombo, BTN_TOOL_FINGER, 0xf0);
+			wacom_report_abs(wcombo, ABS_MISC, PAD_DEVICE_ID);
 			wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
 		} else if (wacom->id[1]) {
+			wacom_input_sync(wcombo); /* sync last event */
 			wacom->id[1] = 0;
+			wacom_report_key(wcombo, BTN_0, (data[7] & 0x40));
+			wacom_report_key(wcombo, BTN_4, (data[7] & 0x80));
 			wacom_report_key(wcombo, BTN_TOOL_FINGER, 0);
+			wacom_report_abs(wcombo, ABS_MISC, 0);
 			wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xf0);
 		}
 	}
@@ -304,28 +315,35 @@ static int wacom_intuos_inout(struct wacom_wac *wacom, void *wcombo)
 			default: /* Unknown tool */
 				wacom->tool[idx] = BTN_TOOL_PEN;
 		}
-		/* only large I3 support Lens Cursor */
-		if(!((wacom->tool[idx] == BTN_TOOL_LENS)
-				 && ((wacom->features->type == INTUOS3)
-				 || (wacom->features->type == INTUOS3S)))) {
-			wacom_report_abs(wcombo, ABS_MISC, wacom->id[idx]); /* report tool id */
-			wacom_report_key(wcombo, wacom->tool[idx], 1);
-			wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
-			return 2;
-		}
 		return 1;
 	}
 
 	/* Exit report */
 	if ((data[1] & 0xfe) == 0x80) {
- 		if(!((wacom->tool[idx] == BTN_TOOL_LENS)
-				 && ((wacom->features->type == INTUOS3)
-				 || (wacom->features->type == INTUOS3S)))) {
-			wacom_report_key(wcombo, wacom->tool[idx], 0);
-			wacom_report_abs(wcombo, ABS_MISC, 0); /* reset tool id */
-			wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
-			return 2;
+		wacom_report_abs(wcombo, ABS_X, 0);
+		wacom_report_abs(wcombo, ABS_Y, 0);
+		wacom_report_abs(wcombo, ABS_DISTANCE, 0);
+		if (wacom->tool[idx] >= BTN_TOOL_MOUSE) {
+			wacom_report_key(wcombo, BTN_LEFT, 0);
+			wacom_report_key(wcombo, BTN_MIDDLE, 0);
+			wacom_report_key(wcombo, BTN_RIGHT, 0);
+			wacom_report_key(wcombo, BTN_SIDE, 0);
+			wacom_report_key(wcombo, BTN_EXTRA, 0);
+			wacom_report_abs(wcombo, ABS_THROTTLE, 0);
+			wacom_report_abs(wcombo, ABS_RZ, 0);
+ 		} else {
+			wacom_report_abs(wcombo, ABS_PRESSURE, 0);
+			wacom_report_abs(wcombo, ABS_TILT_X, 0);
+			wacom_report_abs(wcombo, ABS_TILT_Y, 0);
+			wacom_report_key(wcombo, BTN_STYLUS, 0);
+			wacom_report_key(wcombo, BTN_STYLUS2, 0);
+			wacom_report_key(wcombo, BTN_TOUCH, 0);
+			wacom_report_abs(wcombo, ABS_WHEEL, 0);
 		}
+		wacom_report_key(wcombo, wacom->tool[idx], 0);
+		wacom_report_abs(wcombo, ABS_MISC, 0); /* reset tool id */
+		wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, wacom->serial[idx]);
+		return 2;
 	}
 	return 0;
 }
@@ -394,6 +412,7 @@ static int wacom_intuos_irq(struct wacom_wac *wacom, void *wcombo)
 			wacom_report_key(wcombo, wacom->tool[1], 1);
 		else
 			wacom_report_key(wcombo, wacom->tool[1], 0);
+		wacom_report_abs(wcombo, ABS_MISC, PAD_DEVICE_ID);
 		wacom_input_event(wcombo, EV_MSC, MSC_SERIAL, 0xffffffff);
                 return 1;
 	}
@@ -403,6 +422,12 @@ static int wacom_intuos_irq(struct wacom_wac *wacom, void *wcombo)
 	if (result)
                 return result-1;
 
+	/* Only large I3 and I1 & I2 support Lense Cursor */
+ 	if((wacom->tool[idx] == BTN_TOOL_LENS)
+			&& ((wacom->features->type == INTUOS3)
+		 	|| (wacom->features->type == INTUOS3S)))
+		return 0;
+
 	/* Cintiq doesn't send data when RDY bit isn't set */
 	if ((wacom->features->type == CINTIQ) && !(data[1] & 0x40))
                  return 0;
@@ -554,11 +579,11 @@ static struct wacom_features wacom_features[] = {
 	{ "Wacom Volito2 4x5",   8,   5104,  3712,  511, 63, GRAPHIRE },
 	{ "Wacom Volito2 2x3",   8,   3248,  2320,  511, 63, GRAPHIRE },
 	{ "Wacom PenPartner2",   8,   3250,  2320,  255, 63, GRAPHIRE },
-	{ "Wacom Intuos 4x5",   10,  12700, 10600, 1023, 63, INTUOS },
-	{ "Wacom Intuos 6x8",   10,  20320, 16240, 1023, 63, INTUOS },
-	{ "Wacom Intuos 9x12",  10,  30480, 24060, 1023, 63, INTUOS },
-	{ "Wacom Intuos 12x12", 10,  30480, 31680, 1023, 63, INTUOS },
-	{ "Wacom Intuos 12x18", 10,  45720, 31680, 1023, 63, INTUOS },
+	{ "Wacom Intuos 4x5",   10,  12700, 10600, 1023, 31, INTUOS },
+	{ "Wacom Intuos 6x8",   10,  20320, 16240, 1023, 31, INTUOS },
+	{ "Wacom Intuos 9x12",  10,  30480, 24060, 1023, 31, INTUOS },
+	{ "Wacom Intuos 12x12", 10,  30480, 31680, 1023, 31, INTUOS },
+	{ "Wacom Intuos 12x18", 10,  45720, 31680, 1023, 31, INTUOS },
 	{ "Wacom PL400",         8,   5408,  4056,  255,  0, PL },
 	{ "Wacom PL500",         8,   6144,  4608,  255,  0, PL },
 	{ "Wacom PL600",         8,   6126,  4604,  255,  0, PL },
@@ -571,11 +596,11 @@ static struct wacom_features wacom_features[] = {
 	{ "Wacom DTF521",        8,   6282,  4762,  511,  0, PL },
 	{ "Wacom DTF720",        8,   6858,  5506,  511,  0, PL },
 	{ "Wacom Cintiq Partner",8,  20480, 15360,  511,  0, PTU },
-	{ "Wacom Intuos2 4x5",   10, 12700, 10600, 1023, 63, INTUOS },
-	{ "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 63, INTUOS },
-	{ "Wacom Intuos2 9x12",  10, 30480, 24060, 1023, 63, INTUOS },
-	{ "Wacom Intuos2 12x12", 10, 30480, 31680, 1023, 63, INTUOS },
-	{ "Wacom Intuos2 12x18", 10, 45720, 31680, 1023, 63, INTUOS },
+	{ "Wacom Intuos2 4x5",   10, 12700, 10600, 1023, 31, INTUOS },
+	{ "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 31, INTUOS },
+	{ "Wacom Intuos2 9x12",  10, 30480, 24060, 1023, 31, INTUOS },
+	{ "Wacom Intuos2 12x12", 10, 30480, 31680, 1023, 31, INTUOS },
+	{ "Wacom Intuos2 12x18", 10, 45720, 31680, 1023, 31, INTUOS },
 	{ "Wacom Intuos3 4x5",   10, 25400, 20320, 1023, 63, INTUOS3S },
 	{ "Wacom Intuos3 6x8",   10, 40640, 30480, 1023, 63, INTUOS3 },
 	{ "Wacom Intuos3 9x12",  10, 60960, 45720, 1023, 63, INTUOS3 },
@@ -584,7 +609,7 @@ static struct wacom_features wacom_features[] = {
 	{ "Wacom Intuos3 6x11",  10, 54204, 31750, 1023, 63, INTUOS3 },
 	{ "Wacom Intuos3 4x6",   10, 31496, 19685, 1023, 63, INTUOS3S },
 	{ "Wacom Cintiq 21UX",   10, 87200, 65600, 1023, 63, CINTIQ },
-	{ "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 63, INTUOS },
+	{ "Wacom Intuos2 6x8",   10, 20320, 16240, 1023, 31, INTUOS },
 	{ }
 };
 

drivers/usb/input/wacom_wac.h

@@ -12,6 +12,7 @@
 #define STYLUS_DEVICE_ID	0x02
 #define CURSOR_DEVICE_ID	0x06
 #define ERASER_DEVICE_ID	0x0A
+#define PAD_DEVICE_ID		0x0F
 
 enum {
 	PENPARTNER = 0,

drivers/usb/misc/Kconfig

@@ -244,6 +244,20 @@ config USB_TRANCEVIBRATOR
 	  To compile this driver as a module, choose M here: the
 	  module will be called trancevibrator.
 
+config USB_IOWARRIOR
+	tristate "IO Warrior driver support"
+	depends on USB
+	help
+	  Say Y here if you want to support the IO Warrior devices from Code
+	  Mercenaries.  This includes support for the following devices:
+	  	IO Warrior 40
+		IO Warrior 24
+		IO Warrior 56
+		IO Warrior 24 Power Vampire
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called iowarrior.
+
 config USB_TEST
 	tristate "USB testing driver (DEVELOPMENT)"
 	depends on USB && USB_DEVICEFS && EXPERIMENTAL

drivers/usb/misc/Makefile

@@ -13,6 +13,7 @@ obj-$(CONFIG_USB_EMI26)		+= emi26.o
 obj-$(CONFIG_USB_EMI62)		+= emi62.o
 obj-$(CONFIG_USB_FTDI_ELAN)	+= ftdi-elan.o
 obj-$(CONFIG_USB_IDMOUSE)	+= idmouse.o
+obj-$(CONFIG_USB_IOWARRIOR)	+= iowarrior.o
 obj-$(CONFIG_USB_LCD)		+= usblcd.o
 obj-$(CONFIG_USB_LD)		+= ldusb.o
 obj-$(CONFIG_USB_LED)		+= usbled.o

drivers/usb/misc/iowarrior.c

+/*
+ *  Native support for the I/O-Warrior USB devices
+ *
+ *  Copyright (c) 2003-2005  Code Mercenaries GmbH
+ *  written by Christian Lucht <lucht@codemercs.com>
+ *
+ *  based on
+
+ *  usb-skeleton.c by Greg Kroah-Hartman  <greg@kroah.com>
+ *  brlvger.c by Stephane Dalton  <sdalton@videotron.ca>
+ *           and St�hane Doyon   <s.doyon@videotron.ca>
+ *
+ *  Released under the GPLv2.
+ */
+
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/poll.h>
+#include <linux/version.h>
+#include <linux/usb/iowarrior.h>
+
+/* Version Information */
+#define DRIVER_VERSION "v0.4.0"
+#define DRIVER_AUTHOR "Christian Lucht <lucht@codemercs.com>"
+#define DRIVER_DESC "USB IO-Warrior driver (Linux 2.6.x)"
+
+#define USB_VENDOR_ID_CODEMERCS		1984
+/* low speed iowarrior */
+#define USB_DEVICE_ID_CODEMERCS_IOW40	0x1500
+#define USB_DEVICE_ID_CODEMERCS_IOW24	0x1501
+#define USB_DEVICE_ID_CODEMERCS_IOWPV1	0x1511
+#define USB_DEVICE_ID_CODEMERCS_IOWPV2	0x1512
+/* full speed iowarrior */
+#define USB_DEVICE_ID_CODEMERCS_IOW56	0x1503
+
+/* Get a minor range for your devices from the usb maintainer */
+#ifdef CONFIG_USB_DYNAMIC_MINORS
+#define IOWARRIOR_MINOR_BASE	0
+#else
+#define IOWARRIOR_MINOR_BASE	208	// SKELETON_MINOR_BASE 192 + 16, not offical yet
+#endif
+
+/* interrupt input queue size */
+#define MAX_INTERRUPT_BUFFER 16
+/*
+   maximum number of urbs that are submitted for writes at the same time,
+   this applies to the IOWarrior56 only!
+   IOWarrior24 and IOWarrior40 use synchronous usb_control_msg calls.
+*/
+#define MAX_WRITES_IN_FLIGHT 4
+
+/* Use our own dbg macro */
+#undef dbg
+#define dbg( format, arg... ) do { if( debug ) printk( KERN_DEBUG __FILE__ ": " format "\n" , ## arg ); } while ( 0 )
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/* Module parameters */
+static int debug = 0;
+module_param(debug, bool, 0644);
+MODULE_PARM_DESC(debug, "debug=1 enables debugging messages");
+
+static struct usb_driver iowarrior_driver;
+
+/*--------------*/
+/*     data     */
+/*--------------*/
+
+/* Structure to hold all of our device specific stuff */
+struct iowarrior {
+	struct mutex mutex;			/* locks this structure */
+	struct usb_device *udev;		/* save off the usb device pointer */
+	struct usb_interface *interface;	/* the interface for this device */
+	unsigned char minor;			/* the starting minor number for this device */
+	struct usb_endpoint_descriptor *int_out_endpoint;	/* endpoint for reading (needed for IOW56 only) */
+	struct usb_endpoint_descriptor *int_in_endpoint;	/* endpoint for reading */
+	struct urb *int_in_urb;		/* the urb for reading data */
+	unsigned char *int_in_buffer;	/* buffer for data to be read */
+	unsigned char serial_number;	/* to detect lost packages */
+	unsigned char *read_queue;	/* size is MAX_INTERRUPT_BUFFER * packet size */
+	wait_queue_head_t read_wait;
+	wait_queue_head_t write_wait;	/* wait-queue for writing to the device */
+	atomic_t write_busy;		/* number of write-urbs submitted */
+	atomic_t read_idx;
+	atomic_t intr_idx;
+	spinlock_t intr_idx_lock;	/* protects intr_idx */
+	atomic_t overflow_flag;		/* signals an index 'rollover' */
+	int present;			/* this is 1 as long as the device is connected */
+	int opened;			/* this is 1 if the device is currently open */
+	char chip_serial[9];		/* the serial number string of the chip connected */
+	int report_size;		/* number of bytes in a report */
+	u16 product_id;
+};
+
+/*--------------*/
+/*    globals   */
+/*--------------*/
+/* prevent races between open() and disconnect() */
+static DECLARE_MUTEX(disconnect_sem);
+
+/*
+ *  USB spec identifies 5 second timeouts.
+ */
+#define GET_TIMEOUT 5
+#define USB_REQ_GET_REPORT  0x01
+//#if 0
+static int usb_get_report(struct usb_device *dev,
+			  struct usb_host_interface *inter, unsigned char type,
+			  unsigned char id, void *buf, int size)
+{
+	return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+			       USB_REQ_GET_REPORT,
+			       USB_DIR_IN | USB_TYPE_CLASS |
+			       USB_RECIP_INTERFACE, (type << 8) + id,
+			       inter->desc.bInterfaceNumber, buf, size,
+			       GET_TIMEOUT);
+}
+//#endif
+
+#define USB_REQ_SET_REPORT 0x09
+
+static int usb_set_report(struct usb_interface *intf, unsigned char type,
+			  unsigned char id, void *buf, int size)
+{
+	return usb_control_msg(interface_to_usbdev(intf),
+			       usb_sndctrlpipe(interface_to_usbdev(intf), 0),
+			       USB_REQ_SET_REPORT,
+			       USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+			       (type << 8) + id,
+			       intf->cur_altsetting->desc.bInterfaceNumber, buf,
+			       size, 1);
+}
+
+/*---------------------*/
+/* driver registration */
+/*---------------------*/
+/* table of devices that work with this driver */
+static struct usb_device_id iowarrior_ids[] = {
+	{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40)},
+	{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24)},
+	{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOWPV1)},
+	{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOWPV2)},
+	{USB_DEVICE(USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW56)},
+	{}			/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, iowarrior_ids);
+
+/*
+ * USB callback handler for reading data
+ */
+static void iowarrior_callback(struct urb *urb)
+{
+	struct iowarrior *dev = (struct iowarrior *)urb->context;
+	int intr_idx;
+	int read_idx;
+	int aux_idx;
+	int offset;
+	int status;
+
+	switch (urb->status) {
+	case 0:
+		/* success */
+		break;
+	case -ECONNRESET:
+	case -ENOENT:
+	case -ESHUTDOWN:
+		return;
+	default:
+		goto exit;
+	}
+
+	spin_lock(&dev->intr_idx_lock);
+	intr_idx = atomic_read(&dev->intr_idx);
+	/* aux_idx become previous intr_idx */
+	aux_idx = (intr_idx == 0) ? (MAX_INTERRUPT_BUFFER - 1) : (intr_idx - 1);
+	read_idx = atomic_read(&dev->read_idx);
+
+	/* queue is not empty and it's interface 0 */
+	if ((intr_idx != read_idx)
+	    && (dev->interface->cur_altsetting->desc.bInterfaceNumber == 0)) {
+		/* + 1 for serial number */
+		offset = aux_idx * (dev->report_size + 1);
+		if (!memcmp
+		    (dev->read_queue + offset, urb->transfer_buffer,
+		     dev->report_size)) {
+			/* equal values on interface 0 will be ignored */
+			spin_unlock(&dev->intr_idx_lock);
+			goto exit;
+		}
+	}
+
+	/* aux_idx become next intr_idx */
+	aux_idx = (intr_idx == (MAX_INTERRUPT_BUFFER - 1)) ? 0 : (intr_idx + 1);
+	if (read_idx == aux_idx) {
+		/* queue full, dropping oldest input */
+		read_idx = (++read_idx == MAX_INTERRUPT_BUFFER) ? 0 : read_idx;
+		atomic_set(&dev->read_idx, read_idx);
+		atomic_set(&dev->overflow_flag, 1);
+	}
+
+	/* +1 for serial number */
+	offset = intr_idx * (dev->report_size + 1);
+	memcpy(dev->read_queue + offset, urb->transfer_buffer,
+	       dev->report_size);
+	*(dev->read_queue + offset + (dev->report_size)) = dev->serial_number++;
+
+	atomic_set(&dev->intr_idx, aux_idx);
+	spin_unlock(&dev->intr_idx_lock);
+	/* tell the blocking read about the new data */
+	wake_up_interruptible(&dev->read_wait);
+
+exit:
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status)
+		dev_err(&dev->interface->dev, "%s - usb_submit_urb failed with result %d",
+			__FUNCTION__, status);
+
+}
+
+/*
+ * USB Callback handler for write-ops
+ */
+static void iowarrior_write_callback(struct urb *urb)
+{
+	struct iowarrior *dev;
+	dev = (struct iowarrior *)urb->context;
+	/* sync/async unlink faults aren't errors */
+	if (urb->status &&
+	    !(urb->status == -ENOENT ||
+	      urb->status == -ECONNRESET || urb->status == -ESHUTDOWN)) {
+		dbg("%s - nonzero write bulk status received: %d",
+		    __func__, urb->status);
+	}
+	/* free up our allocated buffer */
+	usb_buffer_free(urb->dev, urb->transfer_buffer_length,
+			urb->transfer_buffer, urb->transfer_dma);
+	/* tell a waiting writer the interrupt-out-pipe is available again */
+	atomic_dec(&dev->write_busy);
+	wake_up_interruptible(&dev->write_wait);
+}
+
+/**
+ *	iowarrior_delete
+ */
+static inline void iowarrior_delete(struct iowarrior *dev)
+{
+	dbg("%s - minor %d", __func__, dev->minor);
+	kfree(dev->int_in_buffer);
+	usb_free_urb(dev->int_in_urb);
+	kfree(dev->read_queue);
+	kfree(dev);
+}
+
+/*---------------------*/
+/* fops implementation */
+/*---------------------*/
+
+static int read_index(struct iowarrior *dev)
+{
+	int intr_idx, read_idx;
+
+	read_idx = atomic_read(&dev->read_idx);
+	intr_idx = atomic_read(&dev->intr_idx);
+
+	return (read_idx == intr_idx ? -1 : read_idx);
+}
+
+/**
+ *  iowarrior_read
+ */
+static ssize_t iowarrior_read(struct file *file, char __user *buffer,
+			      size_t count, loff_t *ppos)
+{
+	struct iowarrior *dev;
+	int read_idx;
+	int offset;
+
+	dev = (struct iowarrior *)file->private_data;
+
+	/* verify that the device wasn't unplugged */
+	if (dev == NULL || !dev->present)
+		return -ENODEV;
+
+	dbg("%s - minor %d, count = %zd", __func__, dev->minor, count);
+
+	/* read count must be packet size (+ time stamp) */
+	if ((count != dev->report_size)
+	    && (count != (dev->report_size + 1)))
+		return -EINVAL;
+
+	/* repeat until no buffer overrun in callback handler occur */
+	do {
+		atomic_set(&dev->overflow_flag, 0);
+		if ((read_idx = read_index(dev)) == -1) {
+			/* queue emty */
+			if (file->f_flags & O_NONBLOCK)
+				return -EAGAIN;
+			else {
+				//next line will return when there is either new data, or the device is unplugged
+				int r = wait_event_interruptible(dev->read_wait,
+								 (!dev->present
+								  || (read_idx =
+								      read_index
+								      (dev)) !=
+								  -1));
+				if (r) {
+					//we were interrupted by a signal
+					return -ERESTART;
+				}
+				if (!dev->present) {
+					//The device was unplugged
+					return -ENODEV;
+				}
+				if (read_idx == -1) {
+					// Can this happen ???
+					return 0;
+				}
+			}
+		}
+
+		offset = read_idx * (dev->report_size + 1);
+		if (copy_to_user(buffer, dev->read_queue + offset, count)) {
+			return -EFAULT;
+		}
+	} while (atomic_read(&dev->overflow_flag));
+
+	read_idx = ++read_idx == MAX_INTERRUPT_BUFFER ? 0 : read_idx;
+	atomic_set(&dev->read_idx, read_idx);
+	return count;
+}
+
+/*
+ * iowarrior_write
+ */
+static ssize_t iowarrior_write(struct file *file,
+			       const char __user *user_buffer,
+			       size_t count, loff_t *ppos)
+{
+	struct iowarrior *dev;
+	int retval = 0;
+	char *buf = NULL;	/* for IOW24 and IOW56 we need a buffer */
+	struct urb *int_out_urb = NULL;
+
+	dev = (struct iowarrior *)file->private_data;
+
+	mutex_lock(&dev->mutex);
+	/* verify that the device wasn't unplugged */
+	if (dev == NULL || !dev->present) {
+		retval = -ENODEV;
+		goto exit;
+	}
+	dbg("%s - minor %d, count = %zd", __func__, dev->minor, count);
+	/* if count is 0 we're already done */
+	if (count == 0) {
+		retval = 0;
+		goto exit;
+	}
+	/* We only accept full reports */
+	if (count != dev->report_size) {
+		retval = -EINVAL;
+		goto exit;
+	}
+	switch (dev->product_id) {
+	case USB_DEVICE_ID_CODEMERCS_IOW24:
+	case USB_DEVICE_ID_CODEMERCS_IOWPV1:
+	case USB_DEVICE_ID_CODEMERCS_IOWPV2:
+	case USB_DEVICE_ID_CODEMERCS_IOW40:
+		/* IOW24 and IOW40 use a synchronous call */
+		buf = kmalloc(8, GFP_KERNEL);	/* 8 bytes are enough for both products */
+		if (!buf) {
+			retval = -ENOMEM;
+			goto exit;
+		}
+		if (copy_from_user(buf, user_buffer, count)) {
+			retval = -EFAULT;
+			kfree(buf);
+			goto exit;
+		}
+		retval = usb_set_report(dev->interface, 2, 0, buf, count);
+		kfree(buf);
+		goto exit;
+		break;
+	case USB_DEVICE_ID_CODEMERCS_IOW56:
+		/* The IOW56 uses asynchronous IO and more urbs */
+		if (atomic_read(&dev->write_busy) == MAX_WRITES_IN_FLIGHT) {
+			/* Wait until we are below the limit for submitted urbs */
+			if (file->f_flags & O_NONBLOCK) {
+				retval = -EAGAIN;
+				goto exit;
+			} else {
+				retval = wait_event_interruptible(dev->write_wait,
+								  (!dev->present || (atomic_read (&dev-> write_busy) < MAX_WRITES_IN_FLIGHT)));
+				if (retval) {
+					/* we were interrupted by a signal */
+					retval = -ERESTART;
+					goto exit;
+				}
+				if (!dev->present) {
+					/* The device was unplugged */
+					retval = -ENODEV;
+					goto exit;
+				}
+				if (!dev->opened) {
+					/* We were closed while waiting for an URB */
+					retval = -ENODEV;
+					goto exit;
+				}
+			}
+		}
+		atomic_inc(&dev->write_busy);
+		int_out_urb = usb_alloc_urb(0, GFP_KERNEL);
+		if (!int_out_urb) {
+			retval = -ENOMEM;
+			dbg("%s Unable to allocate urb ", __func__);
+			goto error;
+		}
+		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;
+		}
+		usb_fill_int_urb(int_out_urb, dev->udev,
+				 usb_sndintpipe(dev->udev,
+						dev->int_out_endpoint->bEndpointAddress),
+				 buf, dev->report_size,
+				 iowarrior_write_callback, dev,
+				 dev->int_out_endpoint->bInterval);
+		int_out_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+		if (copy_from_user(buf, user_buffer, count)) {
+			retval = -EFAULT;
+			goto error;
+		}
+		retval = usb_submit_urb(int_out_urb, GFP_KERNEL);
+		if (retval) {
+			dbg("%s submit error %d for urb nr.%d", __func__,
+			    retval, atomic_read(&dev->write_busy));
+			goto error;
+		}
+		/* submit was ok */
+		retval = count;
+		usb_free_urb(int_out_urb);
+		goto exit;
+		break;
+	default:
+		/* what do we have here ? An unsupported Product-ID ? */
+		dev_err(&dev->interface->dev, "%s - not supported for product=0x%x",
+			__FUNCTION__, dev->product_id);
+		retval = -EFAULT;
+		goto exit;
+		break;
+	}
+error:
+	usb_buffer_free(dev->udev, dev->report_size, buf,
+			int_out_urb->transfer_dma);
+	usb_free_urb(int_out_urb);
+	atomic_dec(&dev->write_busy);
+	wake_up_interruptible(&dev->write_wait);
+exit:
+	mutex_unlock(&dev->mutex);
+	return retval;
+}
+
+/**
+ *	iowarrior_ioctl
+ */
+static int iowarrior_ioctl(struct inode *inode, struct file *file,
+			   unsigned int cmd, unsigned long arg)
+{
+	struct iowarrior *dev = NULL;
+	__u8 *buffer;
+	__u8 __user *user_buffer;
+	int retval;
+	int io_res;		/* checks for bytes read/written and copy_to/from_user results */
+
+	dev = (struct iowarrior *)file->private_data;
+	if (dev == NULL) {
+		return -ENODEV;
+	}
+
+	buffer = kzalloc(dev->report_size, GFP_KERNEL);
+	if (!buffer)
+		return -ENOMEM;
+
+	/* lock this object */
+	mutex_lock(&dev->mutex);
+
+	/* verify that the device wasn't unplugged */
+	if (!dev->present) {
+		mutex_unlock(&dev->mutex);
+		return -ENODEV;
+	}
+
+	dbg("%s - minor %d, cmd 0x%.4x, arg %ld", __func__, dev->minor, cmd,
+	    arg);
+
+	retval = 0;
+	io_res = 0;
+	switch (cmd) {
+	case IOW_WRITE:
+		if (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW24 ||
+		    dev->product_id == USB_DEVICE_ID_CODEMERCS_IOWPV1 ||
+		    dev->product_id == USB_DEVICE_ID_CODEMERCS_IOWPV2 ||
+		    dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW40) {
+			user_buffer = (__u8 __user *)arg;
+			io_res = copy_from_user(buffer, user_buffer,
+						dev->report_size);
+			if (io_res) {
+				retval = -EFAULT;
+			} else {
+				io_res = usb_set_report(dev->interface, 2, 0,
+							buffer,
+							dev->report_size);
+				if (io_res < 0)
+					retval = io_res;
+			}
+		} else {
+			retval = -EINVAL;
+			dev_err(&dev->interface->dev,
+				"ioctl 'IOW_WRITE' is not supported for product=0x%x.",
+				dev->product_id);
+		}
+		break;
+	case IOW_READ:
+		user_buffer = (__u8 __user *)arg;
+		io_res = usb_get_report(dev->udev,
+					dev->interface->cur_altsetting, 1, 0,
+					buffer, dev->report_size);
+		if (io_res < 0)
+			retval = io_res;
+		else {
+			io_res = copy_to_user(user_buffer, buffer, dev->report_size);
+			if (io_res < 0)
+				retval = -EFAULT;
+		}
+		break;
+	case IOW_GETINFO:
+		{
+			/* Report available information for the device */
+			struct iowarrior_info info;
+			/* needed for power consumption */
+			struct usb_config_descriptor *cfg_descriptor = &dev->udev->actconfig->desc;
+
+			/* directly from the descriptor */
+			info.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
+			info.product = dev->product_id;
+			info.revision = le16_to_cpu(dev->udev->descriptor.bcdDevice);
+
+			/* 0==UNKNOWN, 1==LOW(usb1.1) ,2=FULL(usb1.1), 3=HIGH(usb2.0) */
+			info.speed = le16_to_cpu(dev->udev->speed);
+			info.if_num = dev->interface->cur_altsetting->desc.bInterfaceNumber;
+			info.report_size = dev->report_size;
+
+			/* serial number string has been read earlier 8 chars or empty string */
+			memcpy(info.serial, dev->chip_serial,
+			       sizeof(dev->chip_serial));
+			if (cfg_descriptor == NULL) {
+				info.power = -1;	/* no information available */
+			} else {
+				/* the MaxPower is stored in units of 2mA to make it fit into a byte-value */
+				info.power = cfg_descriptor->bMaxPower * 2;
+			}
+			io_res = copy_to_user((struct iowarrior_info __user *)arg, &info,
+					 sizeof(struct iowarrior_info));
+			if (io_res < 0)
+				retval = -EFAULT;
+			break;
+		}
+	default:
+		/* return that we did not understand this ioctl call */
+		retval = -ENOTTY;
+		break;
+	}
+
+	/* unlock the device */
+	mutex_unlock(&dev->mutex);
+	return retval;
+}
+
+/**
+ *	iowarrior_open
+ */
+static int iowarrior_open(struct inode *inode, struct file *file)
+{
+	struct iowarrior *dev = NULL;
+	struct usb_interface *interface;
+	int subminor;
+	int retval = 0;
+
+	dbg("%s", __func__);
+
+	subminor = iminor(inode);
+
+	/* prevent disconnects */
+	down(&disconnect_sem);
+
+	interface = usb_find_interface(&iowarrior_driver, subminor);
+	if (!interface) {
+		err("%s - error, can't find device for minor %d", __FUNCTION__,
+		    subminor);
+		retval = -ENODEV;
+		goto out;
+	}
+
+	dev = usb_get_intfdata(interface);
+	if (!dev) {
+		retval = -ENODEV;
+		goto out;
+	}
+
+	/* Only one process can open each device, no sharing. */
+	if (dev->opened) {
+		retval = -EBUSY;
+		goto out;
+	}
+
+	/* setup interrupt handler for receiving values */
+	if ((retval = usb_submit_urb(dev->int_in_urb, GFP_KERNEL)) < 0) {
+		dev_err(&interface->dev, "Error %d while submitting URB\n", retval);
+		retval = -EFAULT;
+		goto out;
+	}
+	/* increment our usage count for the driver */
+	++dev->opened;
+	/* save our object in the file's private structure */
+	file->private_data = dev;
+	retval = 0;
+
+out:
+	up(&disconnect_sem);
+	return retval;
+}
+
+/**
+ *	iowarrior_release
+ */
+static int iowarrior_release(struct inode *inode, struct file *file)
+{
+	struct iowarrior *dev;
+	int retval = 0;
+
+	dev = (struct iowarrior *)file->private_data;
+	if (dev == NULL) {
+		return -ENODEV;
+	}
+
+	dbg("%s - minor %d", __func__, dev->minor);
+
+	/* lock our device */
+	mutex_lock(&dev->mutex);
+
+	if (dev->opened <= 0) {
+		retval = -ENODEV;	/* close called more than once */
+		mutex_unlock(&dev->mutex);
+	} else {
+		dev->opened = 0;	/* we're closeing now */
+		retval = 0;
+		if (dev->present) {
+			/*
+			   The device is still connected so we only shutdown
+			   pending read-/write-ops.
+			 */
+			usb_kill_urb(dev->int_in_urb);
+			wake_up_interruptible(&dev->read_wait);
+			wake_up_interruptible(&dev->write_wait);
+			mutex_unlock(&dev->mutex);
+		} else {
+			/* The device was unplugged, cleanup resources */
+			mutex_unlock(&dev->mutex);
+			iowarrior_delete(dev);
+		}
+	}
+	return retval;
+}
+
+static unsigned iowarrior_poll(struct file *file, poll_table * wait)
+{
+	struct iowarrior *dev = file->private_data;
+	unsigned int mask = 0;
+
+	if (!dev->present)
+		return POLLERR | POLLHUP;
+
+	poll_wait(file, &dev->read_wait, wait);
+	poll_wait(file, &dev->write_wait, wait);
+
+	if (!dev->present)
+		return POLLERR | POLLHUP;
+
+	if (read_index(dev) != -1)
+		mask |= POLLIN | POLLRDNORM;
+
+	if (atomic_read(&dev->write_busy) < MAX_WRITES_IN_FLIGHT)
+		mask |= POLLOUT | POLLWRNORM;
+	return mask;
+}
+
+/*
+ * File operations needed when we register this driver.
+ * This assumes that this driver NEEDS file operations,
+ * of course, which means that the driver is expected
+ * to have a node in the /dev directory. If the USB
+ * device were for a network interface then the driver
+ * would use "struct net_driver" instead, and a serial
+ * device would use "struct tty_driver".
+ */
+static struct file_operations iowarrior_fops = {
+	.owner = THIS_MODULE,
+	.write = iowarrior_write,
+	.read = iowarrior_read,
+	.ioctl = iowarrior_ioctl,
+	.open = iowarrior_open,
+	.release = iowarrior_release,
+	.poll = iowarrior_poll,
+};
+
+/*
+ * usb class driver info in order to get a minor number from the usb core,
+ * and to have the device registered with devfs and the driver core
+ */
+static struct usb_class_driver iowarrior_class = {
+	.name = "iowarrior%d",
+	.fops = &iowarrior_fops,
+	.minor_base = IOWARRIOR_MINOR_BASE,
+};
+
+/*---------------------------------*/
+/*  probe and disconnect functions */
+/*---------------------------------*/
+/**
+ *	iowarrior_probe
+ *
+ *	Called by the usb core when a new device is connected that it thinks
+ *	this driver might be interested in.
+ */
+static int iowarrior_probe(struct usb_interface *interface,
+			   const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(interface);
+	struct iowarrior *dev = NULL;
+	struct usb_host_interface *iface_desc;
+	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);
+	if (dev == NULL) {
+		dev_err(&interface->dev, "Out of memory");
+		return retval;
+	}
+
+	mutex_init(&dev->mutex);
+
+	atomic_set(&dev->intr_idx, 0);
+	atomic_set(&dev->read_idx, 0);
+	spin_lock_init(&dev->intr_idx_lock);
+	atomic_set(&dev->overflow_flag, 0);
+	init_waitqueue_head(&dev->read_wait);
+	atomic_set(&dev->write_busy, 0);
+	init_waitqueue_head(&dev->write_wait);
+
+	dev->udev = udev;
+	dev->interface = interface;
+
+	iface_desc = interface->cur_altsetting;
+	dev->product_id = le16_to_cpu(udev->descriptor.idProduct);
+
+	/* set up the endpoint information */
+	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+		endpoint = &iface_desc->endpoint[i].desc;
+
+		if (usb_endpoint_is_int_in(endpoint))
+			dev->int_in_endpoint = endpoint;
+		if (usb_endpoint_is_int_out(endpoint))
+			/* this one will match for the IOWarrior56 only */
+			dev->int_out_endpoint = endpoint;
+	}
+	/* we have to check the report_size often, so remember it in the endianess suitable for our machine */
+	dev->report_size = le16_to_cpu(dev->int_in_endpoint->wMaxPacketSize);
+	if ((dev->interface->cur_altsetting->desc.bInterfaceNumber == 0) &&
+	    (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56))
+		/* IOWarrior56 has wMaxPacketSize different from report size */
+		dev->report_size = 7;
+
+	/* create the urb and buffer for reading */
+	dev->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!dev->int_in_urb) {
+		dev_err(&interface->dev, "Couldn't allocate interrupt_in_urb\n");
+		goto error;
+	}
+	dev->int_in_buffer = kmalloc(dev->report_size, GFP_KERNEL);
+	if (!dev->int_in_buffer) {
+		dev_err(&interface->dev, "Couldn't allocate int_in_buffer\n");
+		goto error;
+	}
+	usb_fill_int_urb(dev->int_in_urb, dev->udev,
+			 usb_rcvintpipe(dev->udev,
+					dev->int_in_endpoint->bEndpointAddress),
+			 dev->int_in_buffer, dev->report_size,
+			 iowarrior_callback, dev,
+			 dev->int_in_endpoint->bInterval);
+	/* create an internal buffer for interrupt data from the device */
+	dev->read_queue =
+	    kmalloc(((dev->report_size + 1) * MAX_INTERRUPT_BUFFER),
+		    GFP_KERNEL);
+	if (!dev->read_queue) {
+		dev_err(&interface->dev, "Couldn't allocate read_queue\n");
+		goto error;
+	}
+	/* Get the serial-number of the chip */
+	memset(dev->chip_serial, 0x00, sizeof(dev->chip_serial));
+	usb_string(udev, udev->descriptor.iSerialNumber, dev->chip_serial,
+		   sizeof(dev->chip_serial));
+	if (strlen(dev->chip_serial) != 8)
+		memset(dev->chip_serial, 0x00, sizeof(dev->chip_serial));
+
+	/* 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);
+	}
+	/* allow device read and ioctl */
+	dev->present = 1;
+
+	/* we can register the device now, as it is ready */
+	usb_set_intfdata(interface, dev);
+
+	retval = usb_register_dev(interface, &iowarrior_class);
+	if (retval) {
+		/* something prevented us from registering this driver */
+		dev_err(&interface->dev, "Not able to get a minor for this device.\n");
+		usb_set_intfdata(interface, NULL);
+		goto error;
+	}
+
+	dev->minor = interface->minor;
+
+	/* let the user know what node this device is now attached to */
+	dev_info(&interface->dev, "IOWarrior product=0x%x, serial=%s interface=%d "
+		 "now attached to iowarrior%d\n", dev->product_id, dev->chip_serial,
+		 iface_desc->desc.bInterfaceNumber, dev->minor - IOWARRIOR_MINOR_BASE);
+	return retval;
+
+error:
+	iowarrior_delete(dev);
+	return retval;
+}
+
+/**
+ *	iowarrior_disconnect
+ *
+ *	Called by the usb core when the device is removed from the system.
+ */
+static void iowarrior_disconnect(struct usb_interface *interface)
+{
+	struct iowarrior *dev;
+	int minor;
+
+	/* prevent races with open() */
+	down(&disconnect_sem);
+
+	dev = usb_get_intfdata(interface);
+	usb_set_intfdata(interface, NULL);
+
+	mutex_lock(&dev->mutex);
+
+	minor = dev->minor;
+
+	/* give back our minor */
+	usb_deregister_dev(interface, &iowarrior_class);
+
+	/* prevent device read, write and ioctl */
+	dev->present = 0;
+
+	mutex_unlock(&dev->mutex);
+
+	if (dev->opened) {
+		/* There is a process that holds a filedescriptor to the device ,
+		   so we only shutdown read-/write-ops going on.
+		   Deleting the device is postponed until close() was called.
+		 */
+		usb_kill_urb(dev->int_in_urb);
+		wake_up_interruptible(&dev->read_wait);
+		wake_up_interruptible(&dev->write_wait);
+	} else {
+		/* no process is using the device, cleanup now */
+		iowarrior_delete(dev);
+	}
+	up(&disconnect_sem);
+
+	dev_info(&interface->dev, "I/O-Warror #%d now disconnected\n",
+		 minor - IOWARRIOR_MINOR_BASE);
+}
+
+/* usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver iowarrior_driver = {
+	.name = "iowarrior",
+	.probe = iowarrior_probe,
+	.disconnect = iowarrior_disconnect,
+	.id_table = iowarrior_ids,
+};
+
+static int __init iowarrior_init(void)
+{
+	return usb_register(&iowarrior_driver);
+}
+
+static void __exit iowarrior_exit(void)
+{
+	usb_deregister(&iowarrior_driver);
+}
+
+module_init(iowarrior_init);
+module_exit(iowarrior_exit);

drivers/usb/mon/mon_bin.c

@@ -1165,7 +1165,7 @@ int __init mon_bin_init(void)
 	return rc;
 }
 
-void __exit mon_bin_exit(void)
+void mon_bin_exit(void)
 {
 	cdev_del(&mon_bin_cdev);
 	unregister_chrdev_region(mon_bin_dev0, MON_BIN_MAX_MINOR);

drivers/usb/mon/mon_text.c

@@ -520,7 +520,7 @@ int __init mon_text_init(void)
 	return 0;
 }
 
-void __exit mon_text_exit(void)
+void mon_text_exit(void)
 {
 	debugfs_remove(mon_dir);
 }

drivers/usb/mon/usb_mon.h

@@ -57,9 +57,9 @@ void mon_text_del(struct mon_bus *mbus);
 // void mon_bin_add(struct mon_bus *);
 
 int __init mon_text_init(void);
-void __exit mon_text_exit(void);
+void mon_text_exit(void);
 int __init mon_bin_init(void);
-void __exit mon_bin_exit(void);
+void mon_bin_exit(void);
 
 /*
  * DMA interface.

drivers/usb/net/Kconfig

@@ -186,6 +186,15 @@ config USB_NET_CDCETHER
 	  IEEE 802 "local assignment" bit is set in the address, a "usbX"
 	  name is used instead.
 
+config USB_NET_DM9601
+	tristate "Davicom DM9601 based USB 1.1 10/100 ethernet devices"
+	depends on USB_USBNET
+	select CRC32
+	select USB_USBNET_MII
+	help
+	  This option adds support for Davicom DM9601 based USB 1.1
+	  10/100 Ethernet adapters.
+
 config USB_NET_GL620A
 	tristate "GeneSys GL620USB-A based cables"
 	depends on USB_USBNET

drivers/usb/net/Makefile

@@ -8,6 +8,7 @@ obj-$(CONFIG_USB_PEGASUS)	+= pegasus.o
 obj-$(CONFIG_USB_RTL8150)	+= rtl8150.o
 obj-$(CONFIG_USB_NET_AX8817X)	+= asix.o
 obj-$(CONFIG_USB_NET_CDCETHER)	+= cdc_ether.o
+obj-$(CONFIG_USB_NET_DM9601)	+= dm9601.o
 obj-$(CONFIG_USB_NET_GL620A)	+= gl620a.o
 obj-$(CONFIG_USB_NET_NET1080)	+= net1080.o
 obj-$(CONFIG_USB_NET_PLUSB)	+= plusb.o

drivers/usb/net/asix.c

@@ -1395,9 +1395,9 @@ static const struct usb_device_id	products [] = {
 	USB_DEVICE (0x07b8, 0x420a),
 	.driver_info =  (unsigned long) &hawking_uf200_info,
 }, {
-        // Billionton Systems, USB2AR
-        USB_DEVICE (0x08dd, 0x90ff),
-        .driver_info =  (unsigned long) &ax8817x_info,
+	// Billionton Systems, USB2AR
+	USB_DEVICE (0x08dd, 0x90ff),
+	.driver_info =  (unsigned long) &ax8817x_info,
 }, {
 	// ATEN UC210T
 	USB_DEVICE (0x0557, 0x2009),
@@ -1422,10 +1422,14 @@ static const struct usb_device_id	products [] = {
 	// goodway corp usb gwusb2e
 	USB_DEVICE (0x1631, 0x6200),
 	.driver_info = (unsigned long) &ax8817x_info,
+}, {
+	// JVC MP-PRX1 Port Replicator
+	USB_DEVICE (0x04f1, 0x3008),
+	.driver_info = (unsigned long) &ax8817x_info,
 }, {
 	// ASIX AX88772 10/100
-        USB_DEVICE (0x0b95, 0x7720),
-        .driver_info = (unsigned long) &ax88772_info,
+	USB_DEVICE (0x0b95, 0x7720),
+	.driver_info = (unsigned long) &ax88772_info,
 }, {
 	// ASIX AX88178 10/100/1000
 	USB_DEVICE (0x0b95, 0x1780),

drivers/usb/net/dm9601.c

+/*
+ * Davicom DM9601 USB 1.1 10/100Mbps ethernet devices
+ *
+ * Peter Korsgaard <jacmet@sunsite.dk>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+//#define DEBUG
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/usb.h>
+#include <linux/crc32.h>
+
+#include "usbnet.h"
+
+/* datasheet:
+ http://www.davicom.com.tw/big5/download/Data%20Sheet/DM9601-DS-P01-930914.pdf
+*/
+
+/* control requests */
+#define DM_READ_REGS	0x00
+#define DM_WRITE_REGS	0x01
+#define DM_READ_MEMS	0x02
+#define DM_WRITE_REG	0x03
+#define DM_WRITE_MEMS	0x05
+#define DM_WRITE_MEM	0x07
+
+/* registers */
+#define DM_NET_CTRL	0x00
+#define DM_RX_CTRL	0x05
+#define DM_SHARED_CTRL	0x0b
+#define DM_SHARED_ADDR	0x0c
+#define DM_SHARED_DATA	0x0d	/* low + high */
+#define DM_PHY_ADDR	0x10	/* 6 bytes */
+#define DM_MCAST_ADDR	0x16	/* 8 bytes */
+#define DM_GPR_CTRL	0x1e
+#define DM_GPR_DATA	0x1f
+
+#define DM_MAX_MCAST	64
+#define DM_MCAST_SIZE	8
+#define DM_EEPROM_LEN	256
+#define DM_TX_OVERHEAD	2	/* 2 byte header */
+#define DM_RX_OVERHEAD	7	/* 3 byte header + 4 byte crc tail */
+#define DM_TIMEOUT	1000
+
+
+static int dm_read(struct usbnet *dev, u8 reg, u16 length, void *data)
+{
+	devdbg(dev, "dm_read() reg=0x%02x length=%d", reg, length);
+	return usb_control_msg(dev->udev,
+			       usb_rcvctrlpipe(dev->udev, 0),
+			       DM_READ_REGS,
+			       USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			       0, reg, data, length, USB_CTRL_SET_TIMEOUT);
+}
+
+static int dm_read_reg(struct usbnet *dev, u8 reg, u8 *value)
+{
+	return dm_read(dev, reg, 1, value);
+}
+
+static int dm_write(struct usbnet *dev, u8 reg, u16 length, void *data)
+{
+	devdbg(dev, "dm_write() reg=0x%02x, length=%d", reg, length);
+	return usb_control_msg(dev->udev,
+			       usb_sndctrlpipe(dev->udev, 0),
+			       DM_WRITE_REGS,
+			       USB_DIR_OUT | USB_TYPE_VENDOR |USB_RECIP_DEVICE,
+			       0, reg, data, length, USB_CTRL_SET_TIMEOUT);
+}
+
+static int dm_write_reg(struct usbnet *dev, u8 reg, u8 value)
+{
+	devdbg(dev, "dm_write_reg() reg=0x%02x, value=0x%02x", reg, value);
+	return usb_control_msg(dev->udev,
+			       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);
+}
+
+static void dm_write_async_callback(struct urb *urb)
+{
+	struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context;
+
+	if (urb->status < 0)
+		printk(KERN_DEBUG "dm_write_async_callback() failed with %d",
+		       urb->status);
+
+	kfree(req);
+	usb_free_urb(urb);
+}
+
+static void dm_write_async(struct usbnet *dev, u8 reg, u16 length, void *data)
+{
+	struct usb_ctrlrequest *req;
+	struct urb *urb;
+	int status;
+
+	devdbg(dev, "dm_write_async() reg=0x%02x length=%d", reg, length);
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		deverr(dev, "Error allocating URB in dm_write_async!");
+		return;
+	}
+
+	req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
+	if (!req) {
+		deverr(dev, "Failed to allocate memory for control request");
+		usb_free_urb(urb);
+		return;
+	}
+
+	req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+	req->bRequest = DM_WRITE_REGS;
+	req->wValue = 0;
+	req->wIndex = cpu_to_le16(reg);
+	req->wLength = cpu_to_le16(length);
+
+	usb_fill_control_urb(urb, dev->udev,
+			     usb_sndctrlpipe(dev->udev, 0),
+			     (void *)req, data, length,
+			     dm_write_async_callback, req);
+
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status < 0) {
+		deverr(dev, "Error submitting the control message: status=%d",
+		       status);
+		kfree(req);
+		usb_free_urb(urb);
+	}
+}
+
+static void dm_write_reg_async(struct usbnet *dev, u8 reg, u8 value)
+{
+	struct usb_ctrlrequest *req;
+	struct urb *urb;
+	int status;
+
+	devdbg(dev, "dm_write_reg_async() reg=0x%02x value=0x%02x",
+	       reg, value);
+
+	urb = usb_alloc_urb(0, GFP_ATOMIC);
+	if (!urb) {
+		deverr(dev, "Error allocating URB in dm_write_async!");
+		return;
+	}
+
+	req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
+	if (!req) {
+		deverr(dev, "Failed to allocate memory for control request");
+		usb_free_urb(urb);
+		return;
+	}
+
+	req->bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
+	req->bRequest = DM_WRITE_REG;
+	req->wValue = cpu_to_le16(value);
+	req->wIndex = cpu_to_le16(reg);
+	req->wLength = 0;
+
+	usb_fill_control_urb(urb, dev->udev,
+			     usb_sndctrlpipe(dev->udev, 0),
+			     (void *)req, 0, 0, dm_write_async_callback, req);
+
+	status = usb_submit_urb(urb, GFP_ATOMIC);
+	if (status < 0) {
+		deverr(dev, "Error submitting the control message: status=%d",
+		       status);
+		kfree(req);
+		usb_free_urb(urb);
+	}
+}
+
+static int dm_read_shared_word(struct usbnet *dev, int phy, u8 reg, u16 *value)
+{
+	int ret, i;
+
+	mutex_lock(&dev->phy_mutex);
+
+	dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
+	dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0xc : 0x4);
+
+	for (i = 0; i < DM_TIMEOUT; i++) {
+		u8 tmp;
+
+		udelay(1);
+		ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
+		if (ret < 0)
+			goto out;
+
+		/* ready */
+		if ((tmp & 1) == 0)
+			break;
+	}
+
+	if (i == DM_TIMEOUT) {
+		deverr(dev, "%s read timed out!", phy ? "phy" : "eeprom");
+		ret = -EIO;
+		goto out;
+	}
+
+	dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
+	ret = dm_read(dev, DM_SHARED_DATA, 2, value);
+
+	devdbg(dev, "read shared %d 0x%02x returned 0x%04x, %d",
+	       phy, reg, *value, ret);
+
+ out:
+	mutex_unlock(&dev->phy_mutex);
+	return ret;
+}
+
+static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, u16 value)
+{
+	int ret, i;
+
+	mutex_lock(&dev->phy_mutex);
+
+	ret = dm_write(dev, DM_SHARED_DATA, 2, &value);
+	if (ret < 0)
+		goto out;
+
+	dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg);
+	dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1c : 0x14);
+
+	for (i = 0; i < DM_TIMEOUT; i++) {
+		u8 tmp;
+
+		udelay(1);
+		ret = dm_read_reg(dev, DM_SHARED_CTRL, &tmp);
+		if (ret < 0)
+			goto out;
+
+		/* ready */
+		if ((tmp & 1) == 0)
+			break;
+	}
+
+	if (i == DM_TIMEOUT) {
+		deverr(dev, "%s write timed out!", phy ? "phy" : "eeprom");
+		ret = -EIO;
+		goto out;
+	}
+
+	dm_write_reg(dev, DM_SHARED_CTRL, 0x0);
+
+out:
+	mutex_unlock(&dev->phy_mutex);
+	return ret;
+}
+
+static int dm_read_eeprom_word(struct usbnet *dev, u8 offset, void *value)
+{
+	return dm_read_shared_word(dev, 0, offset, value);
+}
+
+
+
+static int dm9601_get_eeprom_len(struct net_device *dev)
+{
+	return DM_EEPROM_LEN;
+}
+
+static int dm9601_get_eeprom(struct net_device *net,
+			     struct ethtool_eeprom *eeprom, u8 * data)
+{
+	struct usbnet *dev = netdev_priv(net);
+	u16 *ebuf = (u16 *) data;
+	int i;
+
+	/* access is 16bit */
+	if ((eeprom->offset % 2) || (eeprom->len % 2))
+		return -EINVAL;
+
+	for (i = 0; i < eeprom->len / 2; i++) {
+		if (dm_read_eeprom_word(dev, eeprom->offset / 2 + i,
+					&ebuf[i]) < 0)
+			return -EINVAL;
+	}
+	return 0;
+}
+
+static int dm9601_mdio_read(struct net_device *netdev, int phy_id, int loc)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+
+	u16 res;
+
+	if (phy_id) {
+		devdbg(dev, "Only internal phy supported");
+		return 0;
+	}
+
+	dm_read_shared_word(dev, 1, loc, &res);
+
+	devdbg(dev,
+	       "dm9601_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x",
+	       phy_id, loc, le16_to_cpu(res));
+
+	return le16_to_cpu(res);
+}
+
+static void dm9601_mdio_write(struct net_device *netdev, int phy_id, int loc,
+			      int val)
+{
+	struct usbnet *dev = netdev_priv(netdev);
+	u16 res = cpu_to_le16(val);
+
+	if (phy_id) {
+		devdbg(dev, "Only internal phy supported");
+		return;
+	}
+
+	devdbg(dev,"dm9601_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x",
+	       phy_id, loc, val);
+
+	dm_write_shared_word(dev, 1, loc, res);
+}
+
+static void dm9601_get_drvinfo(struct net_device *net,
+			       struct ethtool_drvinfo *info)
+{
+	/* Inherit standard device info */
+	usbnet_get_drvinfo(net, info);
+	info->eedump_len = DM_EEPROM_LEN;
+}
+
+static u32 dm9601_get_link(struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return mii_link_ok(&dev->mii);
+}
+
+static int dm9601_ioctl(struct net_device *net, struct ifreq *rq, int cmd)
+{
+	struct usbnet *dev = netdev_priv(net);
+
+	return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
+}
+
+static struct ethtool_ops dm9601_ethtool_ops = {
+	.get_drvinfo	= dm9601_get_drvinfo,
+	.get_link	= dm9601_get_link,
+	.get_msglevel	= usbnet_get_msglevel,
+	.set_msglevel	= usbnet_set_msglevel,
+	.get_eeprom_len	= dm9601_get_eeprom_len,
+	.get_eeprom	= dm9601_get_eeprom,
+	.get_settings	= usbnet_get_settings,
+	.set_settings	= usbnet_set_settings,
+	.nway_reset	= usbnet_nway_reset,
+};
+
+static void dm9601_set_multicast(struct net_device *net)
+{
+	struct usbnet *dev = netdev_priv(net);
+	/* We use the 20 byte dev->data for our 8 byte filter buffer
+	 * to avoid allocating memory that is tricky to free later */
+	u8 *hashes = (u8 *) & dev->data;
+	u8 rx_ctl = 0x01;
+
+	memset(hashes, 0x00, DM_MCAST_SIZE);
+	hashes[DM_MCAST_SIZE - 1] |= 0x80;	/* broadcast address */
+
+	if (net->flags & IFF_PROMISC) {
+		rx_ctl |= 0x02;
+	} else if (net->flags & IFF_ALLMULTI || net->mc_count > DM_MAX_MCAST) {
+		rx_ctl |= 0x04;
+	} else if (net->mc_count) {
+		struct dev_mc_list *mc_list = net->mc_list;
+		int i;
+
+		for (i = 0; i < net->mc_count; i++) {
+			u32 crc = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26;
+			hashes[crc >> 3] |= 1 << (crc & 0x7);
+		}
+	}
+
+	dm_write_async(dev, DM_MCAST_ADDR, DM_MCAST_SIZE, hashes);
+	dm_write_reg_async(dev, DM_RX_CTRL, rx_ctl);
+}
+
+static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	int ret;
+
+	ret = usbnet_get_endpoints(dev, intf);
+	if (ret)
+		goto out;
+
+	dev->net->do_ioctl = dm9601_ioctl;
+	dev->net->set_multicast_list = dm9601_set_multicast;
+	dev->net->ethtool_ops = &dm9601_ethtool_ops;
+	dev->net->hard_header_len += DM_TX_OVERHEAD;
+	dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
+	dev->rx_urb_size = dev->net->mtu + DM_RX_OVERHEAD;
+
+	dev->mii.dev = dev->net;
+	dev->mii.mdio_read = dm9601_mdio_read;
+	dev->mii.mdio_write = dm9601_mdio_write;
+	dev->mii.phy_id_mask = 0x1f;
+	dev->mii.reg_num_mask = 0x1f;
+
+	/* reset */
+	ret = dm_write_reg(dev, DM_NET_CTRL, 1);
+	udelay(20);
+
+	/* read MAC */
+	ret = dm_read(dev, DM_PHY_ADDR, ETH_ALEN, dev->net->dev_addr);
+	if (ret < 0) {
+		printk(KERN_ERR "Error reading MAC address\n");
+		ret = -ENODEV;
+		goto out;
+	}
+
+
+	/* power up phy */
+	dm_write_reg(dev, DM_GPR_CTRL, 1);
+	dm_write_reg(dev, DM_GPR_DATA, 0);
+
+	/* receive broadcast packets */
+	dm9601_set_multicast(dev->net);
+
+	dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_BMCR, BMCR_RESET);
+	dm9601_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE,
+			  ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP);
+	mii_nway_restart(&dev->mii);
+
+out:
+	return ret;
+}
+
+static int dm9601_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+	u8 status;
+	int len;
+
+	/* format:
+	   b0: rx status
+	   b1: packet length (incl crc) low
+	   b2: packet length (incl crc) high
+	   b3..n-4: packet data
+	   bn-3..bn: ethernet crc
+	 */
+
+	if (unlikely(skb->len < DM_RX_OVERHEAD)) {
+		dev_err(&dev->udev->dev, "unexpected tiny rx frame\n");
+		return 0;
+	}
+
+	status = skb->data[0];
+	len = (skb->data[1] | (skb->data[2] << 8)) - 4;
+
+	if (unlikely(status & 0xbf)) {
+		if (status & 0x01) dev->stats.rx_fifo_errors++;
+		if (status & 0x02) dev->stats.rx_crc_errors++;
+		if (status & 0x04) dev->stats.rx_frame_errors++;
+		if (status & 0x20) dev->stats.rx_missed_errors++;
+		if (status & 0x90) dev->stats.rx_length_errors++;
+		return 0;
+	}
+
+	skb_pull(skb, 3);
+	skb_trim(skb, len);
+
+	return 1;
+}
+
+static struct sk_buff *dm9601_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
+				       gfp_t flags)
+{
+	int len;
+
+	/* format:
+	   b0: packet length low
+	   b1: packet length high
+	   b3..n: packet data
+	*/
+
+	if (skb_headroom(skb) < DM_TX_OVERHEAD) {
+		struct sk_buff *skb2;
+
+		skb2 = skb_copy_expand(skb, DM_TX_OVERHEAD, 0, flags);
+		dev_kfree_skb_any(skb);
+		skb = skb2;
+		if (!skb)
+			return NULL;
+	}
+
+	__skb_push(skb, DM_TX_OVERHEAD);
+
+	len = skb->len;
+	/* usbnet adds padding if length is a multiple of packet size
+	   if so, adjust length value in header */
+	if ((len % dev->maxpacket) == 0)
+		len++;
+
+	skb->data[0] = len;
+	skb->data[1] = len >> 8;
+
+	return skb;
+}
+
+static void dm9601_status(struct usbnet *dev, struct urb *urb)
+{
+	int link;
+	u8 *buf;
+
+	/* format:
+	   b0: net status
+	   b1: tx status 1
+	   b2: tx status 2
+	   b3: rx status
+	   b4: rx overflow
+	   b5: rx count
+	   b6: tx count
+	   b7: gpr
+	*/
+
+	if (urb->actual_length < 8)
+		return;
+
+	buf = urb->transfer_buffer;
+
+	link = !!(buf[0] & 0x40);
+	if (netif_carrier_ok(dev->net) != link) {
+		if (link) {
+			netif_carrier_on(dev->net);
+			usbnet_defer_kevent (dev, EVENT_LINK_RESET);
+		}
+		else
+			netif_carrier_off(dev->net);
+		devdbg(dev, "Link Status is: %d", link);
+	}
+}
+
+static int dm9601_link_reset(struct usbnet *dev)
+{
+	struct ethtool_cmd ecmd;
+
+	mii_check_media(&dev->mii, 1, 1);
+	mii_ethtool_gset(&dev->mii, &ecmd);
+
+	devdbg(dev, "link_reset() speed: %d duplex: %d",
+	       ecmd.speed, ecmd.duplex);
+
+	return 0;
+}
+
+static const struct driver_info dm9601_info = {
+	.description	= "Davicom DM9601 USB Ethernet",
+	.flags		= FLAG_ETHER,
+	.bind		= dm9601_bind,
+	.rx_fixup	= dm9601_rx_fixup,
+	.tx_fixup	= dm9601_tx_fixup,
+	.status		= dm9601_status,
+	.link_reset	= dm9601_link_reset,
+	.reset		= dm9601_link_reset,
+};
+
+static const struct usb_device_id products[] = {
+	{
+	 USB_DEVICE(0x0a46, 0x9601),	/* Davicom USB-100 */
+	 .driver_info = (unsigned long)&dm9601_info,
+	 },
+	{},			// END
+};
+
+MODULE_DEVICE_TABLE(usb, products);
+
+static struct usb_driver dm9601_driver = {
+	.name = "dm9601",
+	.id_table = products,
+	.probe = usbnet_probe,
+	.disconnect = usbnet_disconnect,
+	.suspend = usbnet_suspend,
+	.resume = usbnet_resume,
+};
+
+static int __init dm9601_init(void)
+{
+	return usb_register(&dm9601_driver);
+}
+
+static void __exit dm9601_exit(void)
+{
+	usb_deregister(&dm9601_driver);
+}
+
+module_init(dm9601_init);
+module_exit(dm9601_exit);
+
+MODULE_AUTHOR("Peter Korsgaard <jacmet@sunsite.dk>");
+MODULE_DESCRIPTION("Davicom DM9601 USB 1.1 ethernet devices");
+MODULE_LICENSE("GPL");

drivers/usb/serial/ftdi_sio.c

@@ -513,6 +513,7 @@ static struct usb_device_id id_table_combined [] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) },
 	{ USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
 	{ USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
+	{ USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };

drivers/usb/serial/ftdi_sio.h

@@ -491,6 +491,12 @@
 #define FTDI_TACTRIX_OPENPORT_13S_PID	0xCC49	/* OpenPort 1.3 Subaru */
 #define FTDI_TACTRIX_OPENPORT_13U_PID	0xCC4A	/* OpenPort 1.3 Universal */
 
+/*
+ * Telldus Technologies
+ */
+#define TELLDUS_VID			0x1781	/* Vendor ID */
+#define TELLDUS_TELLSTICK_PID		0x0C30	/* RF control dongle 433 MHz using FT232RL */
+
 /* Commands */
 #define FTDI_SIO_RESET 		0 /* Reset the port */
 #define FTDI_SIO_MODEM_CTRL 	1 /* Set the modem control register */

drivers/usb/serial/option.c

@@ -67,50 +67,95 @@ static int  option_tiocmset(struct usb_serial_port *port, struct file *file,
 static int  option_send_setup(struct usb_serial_port *port);
 
 /* Vendor and product IDs */
-#define OPTION_VENDOR_ID                0x0AF0
-#define HUAWEI_VENDOR_ID                0x12D1
-#define NOVATELWIRELESS_VENDOR_ID       0x1410
-#define ANYDATA_VENDOR_ID               0x16d5
-
-#define OPTION_PRODUCT_OLD              0x5000
-#define OPTION_PRODUCT_FUSION           0x6000
-#define OPTION_PRODUCT_FUSION2          0x6300
-#define OPTION_PRODUCT_COBRA            0x6500
-#define OPTION_PRODUCT_COBRA2           0x6600
-#define OPTION_PRODUCT_GTMAX36          0x6701
-#define HUAWEI_PRODUCT_E600             0x1001
-#define HUAWEI_PRODUCT_E220             0x1003
-#define NOVATELWIRELESS_PRODUCT_U740    0x1400
-#define ANYDATA_PRODUCT_ID              0x6501
+#define OPTION_VENDOR_ID			0x0AF0
+#define OPTION_PRODUCT_COLT			0x5000
+#define OPTION_PRODUCT_RICOLA			0x6000
+#define OPTION_PRODUCT_RICOLA_LIGHT		0x6100
+#define OPTION_PRODUCT_RICOLA_QUAD		0x6200
+#define OPTION_PRODUCT_RICOLA_QUAD_LIGHT	0x6300
+#define OPTION_PRODUCT_RICOLA_NDIS		0x6050
+#define OPTION_PRODUCT_RICOLA_NDIS_LIGHT	0x6150
+#define OPTION_PRODUCT_RICOLA_NDIS_QUAD		0x6250
+#define OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT	0x6350
+#define OPTION_PRODUCT_COBRA			0x6500
+#define OPTION_PRODUCT_COBRA_BUS		0x6501
+#define OPTION_PRODUCT_VIPER			0x6600
+#define OPTION_PRODUCT_VIPER_BUS		0x6601
+#define OPTION_PRODUCT_GT_MAX_READY		0x6701
+#define OPTION_PRODUCT_GT_MAX			0x6711
+#define OPTION_PRODUCT_FUJI_MODEM_LIGHT		0x6721
+#define OPTION_PRODUCT_FUJI_MODEM_GT		0x6741
+#define OPTION_PRODUCT_FUJI_MODEM_EX		0x6761
+#define OPTION_PRODUCT_FUJI_NETWORK_LIGHT	0x6731
+#define OPTION_PRODUCT_FUJI_NETWORK_GT		0x6751
+#define OPTION_PRODUCT_FUJI_NETWORK_EX		0x6771
+#define OPTION_PRODUCT_KOI_MODEM		0x6800
+#define OPTION_PRODUCT_KOI_NETWORK		0x6811
+#define OPTION_PRODUCT_SCORPION_MODEM		0x6901
+#define OPTION_PRODUCT_SCORPION_NETWORK		0x6911
+#define OPTION_PRODUCT_ETNA_MODEM		0x7001
+#define OPTION_PRODUCT_ETNA_NETWORK		0x7011
+#define OPTION_PRODUCT_ETNA_MODEM_LITE		0x7021
+#define OPTION_PRODUCT_ETNA_MODEM_GT		0x7041
+#define OPTION_PRODUCT_ETNA_MODEM_EX		0x7061
+#define OPTION_PRODUCT_ETNA_NETWORK_LITE	0x7031
+#define OPTION_PRODUCT_ETNA_NETWORK_GT		0x7051
+#define OPTION_PRODUCT_ETNA_NETWORK_EX		0x7071
+#define OPTION_PRODUCT_ETNA_KOI_MODEM		0x7100
+#define OPTION_PRODUCT_ETNA_KOI_NETWORK		0x7111
+
+#define HUAWEI_VENDOR_ID			0x12D1
+#define HUAWEI_PRODUCT_E600			0x1001
+#define HUAWEI_PRODUCT_E220			0x1003
+
+#define NOVATELWIRELESS_VENDOR_ID		0x1410
+#define NOVATELWIRELESS_PRODUCT_U740		0x1400
+
+#define ANYDATA_VENDOR_ID			0x16d5
+#define ANYDATA_PRODUCT_ID			0x6501
 
 static struct usb_device_id option_ids[] = {
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_QUAD_LIGHT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_LIGHT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_NDIS_QUAD_LIGHT) },
 	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA2) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GTMAX36) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA_BUS) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_VIPER_BUS) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX_READY) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GT_MAX) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_LIGHT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_GT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_MODEM_EX) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_LIGHT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_GT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUJI_NETWORK_EX) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_MODEM) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_KOI_NETWORK) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_MODEM) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_SCORPION_NETWORK) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_LITE) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_GT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_MODEM_EX) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_LITE) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_GT) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_NETWORK_EX) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_MODEM) },
+	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_ETNA_KOI_NETWORK) },
 	{ USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) },
 	{ USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220) },
 	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID,NOVATELWIRELESS_PRODUCT_U740) },
 	{ USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ID) },
 	{ } /* Terminating entry */
 };
-
-static struct usb_device_id option_ids1[] = {
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_OLD) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_FUSION2) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COBRA2) },
-	{ USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_GTMAX36) },
-	{ USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E600) },
-	{ USB_DEVICE(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E220) },
-	{ USB_DEVICE(NOVATELWIRELESS_VENDOR_ID,NOVATELWIRELESS_PRODUCT_U740) },
-	{ USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ID) },
-	{ } /* Terminating entry */
-};
-
 MODULE_DEVICE_TABLE(usb, option_ids);
 
 static struct usb_driver option_driver = {
@@ -132,7 +177,7 @@ static struct usb_serial_driver option_1port_device = {
 	},
 	.description       = "GSM modem (1-port)",
 	.usb_driver        = &option_driver,
-	.id_table          = option_ids1,
+	.id_table          = option_ids,
 	.num_interrupt_in  = NUM_DONT_CARE,
 	.num_bulk_in       = NUM_DONT_CARE,
 	.num_bulk_out      = NUM_DONT_CARE,

fs/sysfs/file.c

@@ -501,6 +501,30 @@ int sysfs_create_file(struct kobject * kobj, const struct attribute * attr)
 }
 
 
+/**
+ * sysfs_add_file_to_group - add an attribute file to a pre-existing group.
+ * @kobj: object we're acting for.
+ * @attr: attribute descriptor.
+ * @group: group name.
+ */
+int sysfs_add_file_to_group(struct kobject *kobj,
+		const struct attribute *attr, const char *group)
+{
+	struct dentry *dir;
+	int error;
+
+	dir = lookup_one_len(group, kobj->dentry, strlen(group));
+	if (IS_ERR(dir))
+		error = PTR_ERR(dir);
+	else {
+		error = sysfs_add_file(dir, attr, SYSFS_KOBJ_ATTR);
+		dput(dir);
+	}
+	return error;
+}
+EXPORT_SYMBOL_GPL(sysfs_add_file_to_group);
+
+
 /**
  * sysfs_update_file - update the modified timestamp on an object attribute.
  * @kobj: object we're acting for.
@@ -586,6 +610,26 @@ void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr)
 }
 
 
+/**
+ * sysfs_remove_file_from_group - remove an attribute file from a group.
+ * @kobj: object we're acting for.
+ * @attr: attribute descriptor.
+ * @group: group name.
+ */
+void sysfs_remove_file_from_group(struct kobject *kobj,
+		const struct attribute *attr, const char *group)
+{
+	struct dentry *dir;
+
+	dir = lookup_one_len(group, kobj->dentry, strlen(group));
+	if (!IS_ERR(dir)) {
+		sysfs_hash_and_remove(dir, attr->name);
+		dput(dir);
+	}
+}
+EXPORT_SYMBOL_GPL(sysfs_remove_file_from_group);
+
+
 EXPORT_SYMBOL_GPL(sysfs_create_file);
 EXPORT_SYMBOL_GPL(sysfs_remove_file);
 EXPORT_SYMBOL_GPL(sysfs_update_file);

include/linux/sysfs.h

@@ -126,6 +126,11 @@ void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr);
 int __must_check sysfs_create_group(struct kobject *,
 					const struct attribute_group *);
 void sysfs_remove_group(struct kobject *, const struct attribute_group *);
+int sysfs_add_file_to_group(struct kobject *kobj,
+		const struct attribute *attr, const char *group);
+void sysfs_remove_file_from_group(struct kobject *kobj,
+		const struct attribute *attr, const char *group);
+
 void sysfs_notify(struct kobject * k, char *dir, char *attr);
 
 
@@ -210,6 +215,18 @@ static inline void sysfs_remove_group(struct kobject * k, const struct attribute
 	;
 }
 
+static inline int sysfs_add_file_to_group(struct kobject *kobj,
+		const struct attribute *attr, const char *group)
+{
+	return 0;
+}
+
+static inline void sysfs_remove_file_from_group(struct kobject *kobj,
+		const struct attribute *attr, const char *group);
+{
+	;
+}
+
 static inline void sysfs_notify(struct kobject * k, char *dir, char *attr)
 {
 }

include/linux/usb.h

@@ -388,10 +388,14 @@ struct usb_device {
 	struct usb_device *children[USB_MAXCHILDREN];
 
 	int pm_usage_cnt;		/* usage counter for autosuspend */
+	u32 quirks;			/* quirks of the whole device */
+
 #ifdef CONFIG_PM
 	struct delayed_work autosuspend; /* for delayed autosuspends */
 	struct mutex pm_mutex;		/* protects PM operations */
 
+	unsigned autosuspend_delay;	/* in jiffies */
+
 	unsigned auto_pm:1;		/* autosuspend/resume in progress */
 	unsigned do_remote_wakeup:1;	/* remote wakeup should be enabled */
 #endif

include/linux/usb/ch9.h

 /*
- * This file holds USB constants and structures that are needed for USB
- * device APIs.  These are used by the USB device model, which is defined
- * in chapter 9 of the USB 2.0 specification.  Linux has several APIs in C
- * that need these:
+ * This file holds USB constants and structures that are needed for
+ * USB device APIs.  These are used by the USB device model, which is
+ * defined in chapter 9 of the USB 2.0 specification and in the
+ * Wireless USB 1.0 (spread around).  Linux has several APIs in C that
+ * need these:
  *
  * - the master/host side Linux-USB kernel driver API;
  * - the "usbfs" user space API; and
@@ -14,6 +15,19 @@
  *
  * There's also "Wireless USB", using low power short range radios for
  * peripheral interconnection but otherwise building on the USB framework.
+ *
+ * Note all descriptors are declared '__attribute__((packed))' so that:
+ *
+ * [a] they never get padded, either internally (USB spec writers
+ *     probably handled that) or externally;
+ *
+ * [b] so that accessing bigger-than-a-bytes fields will never
+ *     generate bus errors on any platform, even when the location of
+ *     its descriptor inside a bundle isn't "naturally aligned", and
+ *
+ * [c] for consistency, removing all doubt even when it appears to
+ *     someone that the two other points are non-issues for that
+ *     particular descriptor type.
  */
 
 #ifndef __LINUX_USB_CH9_H

include/linux/usb/iowarrior.h

+#ifndef _IOWARRIOR_H_
+#define _IOWARRIOR_H_
+
+#define CODEMERCS_MAGIC_NUMBER	0xC0	/* like COde Mercenaries */
+
+/* Define the ioctl commands for reading and writing data */
+#define IOW_WRITE	_IOW(CODEMERCS_MAGIC_NUMBER, 1, __u8 *)
+#define IOW_READ	_IOW(CODEMERCS_MAGIC_NUMBER, 2, __u8 *)
+
+/*
+   A struct for available device info which is read
+   with the ioctl IOW_GETINFO.
+   To be compatible with 2.4 userspace which didn't have an easy way to get
+   this information.
+*/
+struct iowarrior_info {
+	__u32 vendor;		/* vendor id : supposed to be USB_VENDOR_ID_CODEMERCS in all cases */
+	__u32 product;		/* product id : depends on type of chip (USB_DEVICE_ID_CODEMERCS_XXXXX) */
+	__u8 serial[9];		/* the serial number of our chip (if a serial-number is not available this is empty string) */
+	__u32 revision;		/* revision number of the chip */
+	__u32 speed;		/* USB-speed of the device (0=UNKNOWN, 1=LOW, 2=FULL 3=HIGH) */
+	__u32 power;		/* power consumption of the device in mA */
+	__u32 if_num;		/* the number of the endpoint */
+	__u32 report_size;	/* size of the data-packets on this interface */
+};
+
+/*
+  Get some device-information (product-id , serial-number etc.)
+  in order to identify a chip.
+*/
+#define IOW_GETINFO _IOR(CODEMERCS_MAGIC_NUMBER, 3, struct iowarrior_info)
+
+#endif  /* _IOWARRIOR_H_ */

include/linux/usb/quirks.h

+/*
+ * This file holds the definitions of quirks found in USB devices.
+ * Only quirks that affect the whole device, not an interface,
+ * belong here.
+ */
+
+/* device must not be autosuspended */
+#define USB_QUIRK_NO_AUTOSUSPEND	0x00000001
+
+/* string descriptors must not be fetched using a 255-byte read */
+#define USB_QUIRK_STRING_FETCH_255	0x00000002