Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1864 insertions, 0 deletions

diff --git a/drivers/usb/input/hid-core.c b/drivers/usb/input/hid-core.c
new file mode 100644
index 000000000000..7662cf4e2621
--- /dev/null
+++ b/drivers/usb/input/hid-core.c
@@ -0,0 +1,1864 @@
+/*
+ *  USB HID support for Linux
+ *
+ *  Copyright (c) 1999 Andreas Gal
+ *  Copyright (c) 2000-2001 Vojtech Pavlik <vojtech@suse.cz>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/smp_lock.h>
+#include <linux/spinlock.h>
+#include <asm/unaligned.h>
+#include <asm/byteorder.h>
+#include <linux/input.h>
+#include <linux/wait.h>
+
+#undef DEBUG
+#undef DEBUG_DATA
+
+#include <linux/usb.h>
+
+#include "hid.h"
+#include <linux/hiddev.h>
+
+/*
+ * Version Information
+ */
+
+#define DRIVER_VERSION "v2.01"
+#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
+#define DRIVER_DESC "USB HID core driver"
+#define DRIVER_LICENSE "GPL"
+
+static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
+				"Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
+/*
+ * Module parameters.
+ */
+
+static unsigned int hid_mousepoll_interval;
+module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
+MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
+
+/*
+ * Register a new report for a device.
+ */
+
+static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
+{
+	struct hid_report_enum *report_enum = device->report_enum + type;
+	struct hid_report *report;
+
+	if (report_enum->report_id_hash[id])
+		return report_enum->report_id_hash[id];
+
+	if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
+		return NULL;
+	memset(report, 0, sizeof(struct hid_report));
+
+	if (id != 0)
+		report_enum->numbered = 1;
+
+	report->id = id;
+	report->type = type;
+	report->size = 0;
+	report->device = device;
+	report_enum->report_id_hash[id] = report;
+
+	list_add_tail(&report->list, &report_enum->report_list);
+
+	return report;
+}
+
+/*
+ * Register a new field for this report.
+ */
+
+static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
+{
+	struct hid_field *field;
+
+	if (report->maxfield == HID_MAX_FIELDS) {
+		dbg("too many fields in report");
+		return NULL;
+	}
+
+	if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
+		+ values * sizeof(unsigned), GFP_KERNEL))) return NULL;
+
+	memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
+		+ values * sizeof(unsigned));
+
+	field->index = report->maxfield++;
+	report->field[field->index] = field;
+	field->usage = (struct hid_usage *)(field + 1);
+	field->value = (unsigned *)(field->usage + usages);
+	field->report = report;
+
+	return field;
+}
+
+/*
+ * Open a collection. The type/usage is pushed on the stack.
+ */
+
+static int open_collection(struct hid_parser *parser, unsigned type)
+{
+	struct hid_collection *collection;
+	unsigned usage;
+
+	usage = parser->local.usage[0];
+
+	if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
+		dbg("collection stack overflow");
+		return -1;
+	}
+
+	if (parser->device->maxcollection == parser->device->collection_size) {
+		collection = kmalloc(sizeof(struct hid_collection) *
+				parser->device->collection_size * 2, GFP_KERNEL);
+		if (collection == NULL) {
+			dbg("failed to reallocate collection array");
+			return -1;
+		}
+		memcpy(collection, parser->device->collection,
+			sizeof(struct hid_collection) *
+			parser->device->collection_size);
+		memset(collection + parser->device->collection_size, 0,
+			sizeof(struct hid_collection) *
+			parser->device->collection_size);
+		kfree(parser->device->collection);
+		parser->device->collection = collection;
+		parser->device->collection_size *= 2;
+	}
+
+	parser->collection_stack[parser->collection_stack_ptr++] =
+		parser->device->maxcollection;
+
+	collection = parser->device->collection +
+		parser->device->maxcollection++;
+	collection->type = type;
+	collection->usage = usage;
+	collection->level = parser->collection_stack_ptr - 1;
+
+	if (type == HID_COLLECTION_APPLICATION)
+		parser->device->maxapplication++;
+
+	return 0;
+}
+
+/*
+ * Close a collection.
+ */
+
+static int close_collection(struct hid_parser *parser)
+{
+	if (!parser->collection_stack_ptr) {
+		dbg("collection stack underflow");
+		return -1;
+	}
+	parser->collection_stack_ptr--;
+	return 0;
+}
+
+/*
+ * Climb up the stack, search for the specified collection type
+ * and return the usage.
+ */
+
+static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
+{
+	int n;
+	for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
+		if (parser->device->collection[parser->collection_stack[n]].type == type)
+			return parser->device->collection[parser->collection_stack[n]].usage;
+	return 0; /* we know nothing about this usage type */
+}
+
+/*
+ * Add a usage to the temporary parser table.
+ */
+
+static int hid_add_usage(struct hid_parser *parser, unsigned usage)
+{
+	if (parser->local.usage_index >= HID_MAX_USAGES) {
+		dbg("usage index exceeded");
+		return -1;
+	}
+	parser->local.usage[parser->local.usage_index] = usage;
+	parser->local.collection_index[parser->local.usage_index] =
+		parser->collection_stack_ptr ?
+		parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
+	parser->local.usage_index++;
+	return 0;
+}
+
+/*
+ * Register a new field for this report.
+ */
+
+static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
+{
+	struct hid_report *report;
+	struct hid_field *field;
+	int usages;
+	unsigned offset;
+	int i;
+
+	if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
+		dbg("hid_register_report failed");
+		return -1;
+	}
+
+	if (parser->global.logical_maximum < parser->global.logical_minimum) {
+		dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
+		return -1;
+	}
+
+	offset = report->size;
+	report->size += parser->global.report_size * parser->global.report_count;
+
+	if (!parser->local.usage_index) /* Ignore padding fields */
+		return 0; 
+
+	usages = max_t(int, parser->local.usage_index, parser->global.report_count);
+
+	if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
+		return 0;
+
+	field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
+	field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
+	field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
+
+	for (i = 0; i < usages; i++) {
+		int j = i;
+		/* Duplicate the last usage we parsed if we have excess values */
+		if (i >= parser->local.usage_index)
+			j = parser->local.usage_index - 1;
+		field->usage[i].hid = parser->local.usage[j];
+		field->usage[i].collection_index =
+			parser->local.collection_index[j];
+	}
+
+	field->maxusage = usages;
+	field->flags = flags;
+	field->report_offset = offset;
+	field->report_type = report_type;
+	field->report_size = parser->global.report_size;
+	field->report_count = parser->global.report_count;
+	field->logical_minimum = parser->global.logical_minimum;
+	field->logical_maximum = parser->global.logical_maximum;
+	field->physical_minimum = parser->global.physical_minimum;
+	field->physical_maximum = parser->global.physical_maximum;
+	field->unit_exponent = parser->global.unit_exponent;
+	field->unit = parser->global.unit;
+
+	return 0;
+}
+
+/*
+ * Read data value from item.
+ */
+
+static __inline__ __u32 item_udata(struct hid_item *item)
+{
+	switch (item->size) {
+		case 1: return item->data.u8;
+		case 2: return item->data.u16;
+		case 4: return item->data.u32;
+	}
+	return 0;
+}
+
+static __inline__ __s32 item_sdata(struct hid_item *item)
+{
+	switch (item->size) {
+		case 1: return item->data.s8;
+		case 2: return item->data.s16;
+		case 4: return item->data.s32;
+	}
+	return 0;
+}
+
+/*
+ * Process a global item.
+ */
+
+static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
+{
+	switch (item->tag) {
+
+		case HID_GLOBAL_ITEM_TAG_PUSH:
+
+			if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
+				dbg("global enviroment stack overflow");
+				return -1;
+			}
+
+			memcpy(parser->global_stack + parser->global_stack_ptr++,
+				&parser->global, sizeof(struct hid_global));
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_POP:
+
+			if (!parser->global_stack_ptr) {
+				dbg("global enviroment stack underflow");
+				return -1;
+			}
+
+			memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
+				sizeof(struct hid_global));
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
+			parser->global.usage_page = item_udata(item);
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
+			parser->global.logical_minimum = item_sdata(item);
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
+			if (parser->global.logical_minimum < 0)
+				parser->global.logical_maximum = item_sdata(item);
+			else
+				parser->global.logical_maximum = item_udata(item);
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
+			parser->global.physical_minimum = item_sdata(item);
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
+			if (parser->global.physical_minimum < 0)
+				parser->global.physical_maximum = item_sdata(item);
+			else
+				parser->global.physical_maximum = item_udata(item);
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
+			parser->global.unit_exponent = item_sdata(item);
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_UNIT:
+			parser->global.unit = item_udata(item);
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
+			if ((parser->global.report_size = item_udata(item)) > 32) {
+				dbg("invalid report_size %d", parser->global.report_size);
+				return -1;
+			}
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
+			if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
+				dbg("invalid report_count %d", parser->global.report_count);
+				return -1;
+			}
+			return 0;
+
+		case HID_GLOBAL_ITEM_TAG_REPORT_ID:
+			if ((parser->global.report_id = item_udata(item)) == 0) {
+				dbg("report_id 0 is invalid");
+				return -1;
+			}
+			return 0;
+
+		default:
+			dbg("unknown global tag 0x%x", item->tag);
+			return -1;
+	}
+}
+
+/*
+ * Process a local item.
+ */
+
+static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
+{
+	__u32 data;
+	unsigned n;
+
+	if (item->size == 0) {
+		dbg("item data expected for local item");
+		return -1;
+	}
+
+	data = item_udata(item);
+
+	switch (item->tag) {
+
+		case HID_LOCAL_ITEM_TAG_DELIMITER:
+
+			if (data) {
+				/*
+				 * We treat items before the first delimiter
+				 * as global to all usage sets (branch 0).
+				 * In the moment we process only these global
+				 * items and the first delimiter set.
+				 */
+				if (parser->local.delimiter_depth != 0) {
+					dbg("nested delimiters");
+					return -1;
+				}
+				parser->local.delimiter_depth++;
+				parser->local.delimiter_branch++;
+			} else {
+				if (parser->local.delimiter_depth < 1) {
+					dbg("bogus close delimiter");
+					return -1;
+				}
+				parser->local.delimiter_depth--;
+			}
+			return 1;
+
+		case HID_LOCAL_ITEM_TAG_USAGE:
+
+			if (parser->local.delimiter_branch > 1) {
+				dbg("alternative usage ignored");
+				return 0;
+			}
+
+			if (item->size <= 2)
+				data = (parser->global.usage_page << 16) + data;
+
+			return hid_add_usage(parser, data);
+
+		case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
+
+			if (parser->local.delimiter_branch > 1) {
+				dbg("alternative usage ignored");
+				return 0;
+			}
+
+			if (item->size <= 2)
+				data = (parser->global.usage_page << 16) + data;
+
+			parser->local.usage_minimum = data;
+			return 0;
+
+		case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
+
+			if (parser->local.delimiter_branch > 1) {
+				dbg("alternative usage ignored");
+				return 0;
+			}
+
+			if (item->size <= 2)
+				data = (parser->global.usage_page << 16) + data;
+
+			for (n = parser->local.usage_minimum; n <= data; n++)
+				if (hid_add_usage(parser, n)) {
+					dbg("hid_add_usage failed\n");
+					return -1;
+				}
+			return 0;
+
+		default:
+
+			dbg("unknown local item tag 0x%x", item->tag);
+			return 0;
+	}
+	return 0;
+}
+
+/*
+ * Process a main item.
+ */
+
+static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
+{
+	__u32 data;
+	int ret;
+
+	data = item_udata(item);
+
+	switch (item->tag) {
+		case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
+			ret = open_collection(parser, data & 0xff);
+			break;
+		case HID_MAIN_ITEM_TAG_END_COLLECTION:
+			ret = close_collection(parser);
+			break;
+		case HID_MAIN_ITEM_TAG_INPUT:
+			ret = hid_add_field(parser, HID_INPUT_REPORT, data);
+			break;
+		case HID_MAIN_ITEM_TAG_OUTPUT:
+			ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
+			break;
+		case HID_MAIN_ITEM_TAG_FEATURE:
+			ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
+			break;
+		default:
+			dbg("unknown main item tag 0x%x", item->tag);
+			ret = 0;
+	}
+
+	memset(&parser->local, 0, sizeof(parser->local));	/* Reset the local parser environment */
+
+	return ret;
+}
+
+/*
+ * Process a reserved item.
+ */
+
+static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
+{
+	dbg("reserved item type, tag 0x%x", item->tag);
+	return 0;
+}
+
+/*
+ * Free a report and all registered fields. The field->usage and
+ * field->value table's are allocated behind the field, so we need
+ * only to free(field) itself.
+ */
+
+static void hid_free_report(struct hid_report *report)
+{
+	unsigned n;
+
+	for (n = 0; n < report->maxfield; n++)
+		kfree(report->field[n]);
+	kfree(report);
+}
+
+/*
+ * Free a device structure, all reports, and all fields.
+ */
+
+static void hid_free_device(struct hid_device *device)
+{
+	unsigned i,j;
+
+	hid_ff_exit(device);
+
+	for (i = 0; i < HID_REPORT_TYPES; i++) {
+		struct hid_report_enum *report_enum = device->report_enum + i;
+
+		for (j = 0; j < 256; j++) {
+			struct hid_report *report = report_enum->report_id_hash[j];
+			if (report)
+				hid_free_report(report);
+		}
+	}
+
+	if (device->rdesc)
+		kfree(device->rdesc);
+	kfree(device);
+}
+
+/*
+ * Fetch a report description item from the data stream. We support long
+ * items, though they are not used yet.
+ */
+
+static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
+{
+	u8 b;
+
+	if ((end - start) <= 0)
+		return NULL;
+
+	b = *start++;
+
+	item->type = (b >> 2) & 3;
+	item->tag  = (b >> 4) & 15;
+
+	if (item->tag == HID_ITEM_TAG_LONG) {
+
+		item->format = HID_ITEM_FORMAT_LONG;
+
+		if ((end - start) < 2)
+			return NULL;
+
+		item->size = *start++;
+		item->tag  = *start++;
+
+		if ((end - start) < item->size)
+			return NULL;
+
+		item->data.longdata = start;
+		start += item->size;
+		return start;
+	}
+
+	item->format = HID_ITEM_FORMAT_SHORT;
+	item->size = b & 3;
+
+	switch (item->size) {
+
+		case 0:
+			return start;
+
+		case 1:
+			if ((end - start) < 1)
+				return NULL;
+			item->data.u8 = *start++;
+			return start;
+
+		case 2:
+			if ((end - start) < 2)
+				return NULL;
+			item->data.u16 = le16_to_cpu(get_unaligned((__le16*)start));
+			start = (__u8 *)((__le16 *)start + 1);
+			return start;
+
+		case 3:
+			item->size++;
+			if ((end - start) < 4)
+				return NULL;
+			item->data.u32 = le32_to_cpu(get_unaligned((__le32*)start));
+			start = (__u8 *)((__le32 *)start + 1);
+			return start;
+	}
+
+	return NULL;
+}
+
+/*
+ * Parse a report description into a hid_device structure. Reports are
+ * enumerated, fields are attached to these reports.
+ */
+
+static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
+{
+	struct hid_device *device;
+	struct hid_parser *parser;
+	struct hid_item item;
+	__u8 *end;
+	unsigned i;
+	static int (*dispatch_type[])(struct hid_parser *parser,
+				      struct hid_item *item) = {
+		hid_parser_main,
+		hid_parser_global,
+		hid_parser_local,
+		hid_parser_reserved
+	};
+
+	if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
+		return NULL;
+	memset(device, 0, sizeof(struct hid_device));
+
+	if (!(device->collection = kmalloc(sizeof(struct hid_collection) *
+				   HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
+		kfree(device);
+		return NULL;
+	}
+	memset(device->collection, 0, sizeof(struct hid_collection) *
+		HID_DEFAULT_NUM_COLLECTIONS);
+	device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
+
+	for (i = 0; i < HID_REPORT_TYPES; i++)
+		INIT_LIST_HEAD(&device->report_enum[i].report_list);
+
+	if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
+		kfree(device->collection);
+		kfree(device);
+		return NULL;
+	}
+	memcpy(device->rdesc, start, size);
+	device->rsize = size;
+
+	if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
+		kfree(device->rdesc);
+		kfree(device->collection);
+		kfree(device);
+		return NULL;
+	}
+	memset(parser, 0, sizeof(struct hid_parser));
+	parser->device = device;
+
+	end = start + size;
+	while ((start = fetch_item(start, end, &item)) != NULL) {
+
+		if (item.format != HID_ITEM_FORMAT_SHORT) {
+			dbg("unexpected long global item");
+			kfree(device->collection);
+			hid_free_device(device);
+			kfree(parser);
+			return NULL;
+		}
+
+		if (dispatch_type[item.type](parser, &item)) {
+			dbg("item %u %u %u %u parsing failed\n",
+				item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
+			kfree(device->collection);
+			hid_free_device(device);
+			kfree(parser);
+			return NULL;
+		}
+
+		if (start == end) {
+			if (parser->collection_stack_ptr) {
+				dbg("unbalanced collection at end of report description");
+				kfree(device->collection);
+				hid_free_device(device);
+				kfree(parser);
+				return NULL;
+			}
+			if (parser->local.delimiter_depth) {
+				dbg("unbalanced delimiter at end of report description");
+				kfree(device->collection);
+				hid_free_device(device);
+				kfree(parser);
+				return NULL;
+			}
+			kfree(parser);
+			return device;
+		}
+	}
+
+	dbg("item fetching failed at offset %d\n", (int)(end - start));
+	kfree(device->collection);
+	hid_free_device(device);
+	kfree(parser);
+	return NULL;
+}
+
+/*
+ * Convert a signed n-bit integer to signed 32-bit integer. Common
+ * cases are done through the compiler, the screwed things has to be
+ * done by hand.
+ */
+
+static __inline__ __s32 snto32(__u32 value, unsigned n)
+{
+	switch (n) {
+		case 8:  return ((__s8)value);
+		case 16: return ((__s16)value);
+		case 32: return ((__s32)value);
+	}
+	return value & (1 << (n - 1)) ? value | (-1 << n) : value;
+}
+
+/*
+ * Convert a signed 32-bit integer to a signed n-bit integer.
+ */
+
+static __inline__ __u32 s32ton(__s32 value, unsigned n)
+{
+	__s32 a = value >> (n - 1);
+	if (a && a != -1)
+		return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
+	return value & ((1 << n) - 1);
+}
+
+/*
+ * Extract/implement a data field from/to a report.
+ */
+
+static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
+{
+	report += (offset >> 5) << 2; offset &= 31;
+	return (le64_to_cpu(get_unaligned((__le64*)report)) >> offset) & ((1 << n) - 1);
+}
+
+static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
+{
+	report += (offset >> 5) << 2; offset &= 31;
+	put_unaligned((get_unaligned((__le64*)report)
+		& cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
+		| cpu_to_le64((__u64)value << offset), (__le64*)report);
+}
+
+/*
+ * Search an array for a value.
+ */
+
+static __inline__ int search(__s32 *array, __s32 value, unsigned n)
+{
+	while (n--) {
+		if (*array++ == value)
+			return 0;
+	}
+	return -1;
+}
+
+static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
+{
+	hid_dump_input(usage, value);
+	if (hid->claimed & HID_CLAIMED_INPUT)
+		hidinput_hid_event(hid, field, usage, value, regs);
+	if (hid->claimed & HID_CLAIMED_HIDDEV)
+		hiddev_hid_event(hid, field, usage, value, regs);
+}
+
+/*
+ * Analyse a received field, and fetch the data from it. The field
+ * content is stored for next report processing (we do differential
+ * reporting to the layer).
+ */
+
+static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
+{
+	unsigned n;
+	unsigned count = field->report_count;
+	unsigned offset = field->report_offset;
+	unsigned size = field->report_size;
+	__s32 min = field->logical_minimum;
+	__s32 max = field->logical_maximum;
+	__s32 *value;
+
+	if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
+		return;
+
+	for (n = 0; n < count; n++) {
+
+			value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
+						    extract(data, offset + n * size, size);
+
+			if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
+			    && value[n] >= min && value[n] <= max
+			    && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
+				goto exit;
+	}
+
+	for (n = 0; n < count; n++) {
+
+		if (HID_MAIN_ITEM_VARIABLE & field->flags) {
+			hid_process_event(hid, field, &field->usage[n], value[n], regs);
+			continue;
+		}
+
+		if (field->value[n] >= min && field->value[n] <= max
+			&& field->usage[field->value[n] - min].hid
+			&& search(value, field->value[n], count))
+				hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, regs);
+
+		if (value[n] >= min && value[n] <= max
+			&& field->usage[value[n] - min].hid
+			&& search(field->value, value[n], count))
+				hid_process_event(hid, field, &field->usage[value[n] - min], 1, regs);
+	}
+
+	memcpy(field->value, value, count * sizeof(__s32));
+exit:
+	kfree(value);
+}
+
+static int hid_input_report(int type, struct urb *urb, struct pt_regs *regs)
+{
+	struct hid_device *hid = urb->context;
+	struct hid_report_enum *report_enum = hid->report_enum + type;
+	u8 *data = urb->transfer_buffer;
+	int len = urb->actual_length;
+	struct hid_report *report;
+	int n, size;
+
+	if (!len) {
+		dbg("empty report");
+		return -1;
+	}
+
+#ifdef DEBUG_DATA
+	printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
+#endif
+
+	n = 0;				/* Normally report number is 0 */
+	if (report_enum->numbered) {	/* Device uses numbered reports, data[0] is report number */
+		n = *data++;
+		len--;
+	}
+
+#ifdef DEBUG_DATA
+	{
+		int i;
+		printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
+		for (i = 0; i < len; i++)
+			printk(" %02x", data[i]);
+		printk("\n");
+	}
+#endif
+
+	if (!(report = report_enum->report_id_hash[n])) {
+		dbg("undefined report_id %d received", n);
+		return -1;
+	}
+
+	size = ((report->size - 1) >> 3) + 1;
+
+	if (len < size)
+		dbg("report %d is too short, (%d < %d)", report->id, len, size);
+
+	if (hid->claimed & HID_CLAIMED_HIDDEV)
+		hiddev_report_event(hid, report);
+
+	for (n = 0; n < report->maxfield; n++)
+		hid_input_field(hid, report->field[n], data, regs);
+
+	if (hid->claimed & HID_CLAIMED_INPUT)
+		hidinput_report_event(hid, report);
+
+	return 0;
+}
+
+/*
+ * Input interrupt completion handler.
+ */
+
+static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
+{
+	struct hid_device	*hid = urb->context;
+	int			status;
+
+	switch (urb->status) {
+		case 0:			/* success */
+			hid_input_report(HID_INPUT_REPORT, urb, regs);
+			break;
+		case -ECONNRESET:	/* unlink */
+		case -ENOENT:
+		case -EPERM:
+		case -ESHUTDOWN:	/* unplug */
+		case -EILSEQ:		/* unplug timeout on uhci */
+			return;
+		case -ETIMEDOUT:	/* NAK */
+			break;
+		default:		/* error */
+			warn("input irq status %d received", urb->status);
+	}
+
+	status = usb_submit_urb(urb, SLAB_ATOMIC);
+	if (status)
+		err("can't resubmit intr, %s-%s/input%d, status %d",
+				hid->dev->bus->bus_name, hid->dev->devpath,
+				hid->ifnum, status);
+}
+
+/*
+ * Output the field into the report.
+ */
+
+static void hid_output_field(struct hid_field *field, __u8 *data)
+{
+	unsigned count = field->report_count;
+	unsigned offset = field->report_offset;
+	unsigned size = field->report_size;
+	unsigned n;
+
+	for (n = 0; n < count; n++) {
+		if (field->logical_minimum < 0)	/* signed values */
+			implement(data, offset + n * size, size, s32ton(field->value[n], size));
+		else				/* unsigned values */
+			implement(data, offset + n * size, size, field->value[n]);
+	}
+}
+
+/*
+ * Create a report.
+ */
+
+static void hid_output_report(struct hid_report *report, __u8 *data)
+{
+	unsigned n;
+
+	if (report->id > 0)
+		*data++ = report->id;
+
+	for (n = 0; n < report->maxfield; n++)
+		hid_output_field(report->field[n], data);
+}
+
+/*
+ * Set a field value. The report this field belongs to has to be
+ * created and transferred to the device, to set this value in the
+ * device.
+ */
+
+int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
+{
+	unsigned size = field->report_size;
+
+	hid_dump_input(field->usage + offset, value);
+
+	if (offset >= field->report_count) {
+		dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
+		hid_dump_field(field, 8);
+		return -1;
+	}
+	if (field->logical_minimum < 0) {
+		if (value != snto32(s32ton(value, size), size)) {
+			dbg("value %d is out of range", value);
+			return -1;
+		}
+	}
+	field->value[offset] = value;
+	return 0;
+}
+
+/*
+ * Find a report field with a specified HID usage.
+ */
+
+struct hid_field *hid_find_field_by_usage(struct hid_device *hid, __u32 wanted_usage, int type)
+{
+	struct hid_report *report;
+	int i;
+
+	list_for_each_entry(report, &hid->report_enum[type].report_list, list)
+		for (i = 0; i < report->maxfield; i++)
+			if (report->field[i]->logical == wanted_usage)
+				return report->field[i];
+	return NULL;
+}
+
+static int hid_submit_out(struct hid_device *hid)
+{
+	struct hid_report *report;
+
+	report = hid->out[hid->outtail];
+
+	hid_output_report(report, hid->outbuf);
+	hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
+	hid->urbout->dev = hid->dev;
+
+	dbg("submitting out urb");
+
+	if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
+		err("usb_submit_urb(out) failed");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int hid_submit_ctrl(struct hid_device *hid)
+{
+	struct hid_report *report;
+	unsigned char dir;
+	int len;
+
+	report = hid->ctrl[hid->ctrltail].report;
+	dir = hid->ctrl[hid->ctrltail].dir;
+
+	len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
+	if (dir == USB_DIR_OUT) {
+		hid_output_report(report, hid->ctrlbuf);
+		hid->urbctrl->pipe = usb_sndctrlpipe(hid->dev, 0);
+		hid->urbctrl->transfer_buffer_length = len;
+	} else {
+		int maxpacket, padlen;
+
+		hid->urbctrl->pipe = usb_rcvctrlpipe(hid->dev, 0);
+		maxpacket = usb_maxpacket(hid->dev, hid->urbctrl->pipe, 0);
+		if (maxpacket > 0) {
+			padlen = (len + maxpacket - 1) / maxpacket;
+			padlen *= maxpacket;
+			if (padlen > HID_BUFFER_SIZE)
+				padlen = HID_BUFFER_SIZE;
+		} else
+			padlen = 0;
+		hid->urbctrl->transfer_buffer_length = padlen;
+	}
+	hid->urbctrl->dev = hid->dev;
+
+	hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
+	hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
+	hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
+	hid->cr->wIndex = cpu_to_le16(hid->ifnum);
+	hid->cr->wLength = cpu_to_le16(len);
+
+	dbg("submitting ctrl urb: %s wValue=0x%04x wIndex=0x%04x wLength=%u",
+		hid->cr->bRequest == HID_REQ_SET_REPORT ? "Set_Report" : "Get_Report",
+		hid->cr->wValue, hid->cr->wIndex, hid->cr->wLength);
+
+	if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
+		err("usb_submit_urb(ctrl) failed");
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * Output interrupt completion handler.
+ */
+
+static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
+{
+	struct hid_device *hid = urb->context;
+	unsigned long flags;
+	int unplug = 0;
+
+	switch (urb->status) {
+		case 0:			/* success */
+		case -ESHUTDOWN:	/* unplug */
+		case -EILSEQ:		/* unplug timeout on uhci */
+			unplug = 1;
+		case -ECONNRESET:	/* unlink */
+		case -ENOENT:
+			break;
+		default:		/* error */
+			warn("output irq status %d received", urb->status);
+	}
+
+	spin_lock_irqsave(&hid->outlock, flags);
+
+	if (unplug)
+		hid->outtail = hid->outhead;
+	else
+		hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
+
+	if (hid->outhead != hid->outtail) {
+		if (hid_submit_out(hid)) {
+			clear_bit(HID_OUT_RUNNING, &hid->iofl);;
+			wake_up(&hid->wait);
+		}
+		spin_unlock_irqrestore(&hid->outlock, flags);
+		return;
+	}
+
+	clear_bit(HID_OUT_RUNNING, &hid->iofl);
+	spin_unlock_irqrestore(&hid->outlock, flags);
+	wake_up(&hid->wait);
+}
+
+/*
+ * Control pipe completion handler.
+ */
+
+static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
+{
+	struct hid_device *hid = urb->context;
+	unsigned long flags;
+	int unplug = 0;
+
+	spin_lock_irqsave(&hid->ctrllock, flags);
+
+	switch (urb->status) {
+		case 0:			/* success */
+			if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
+				hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
+		case -ESHUTDOWN:	/* unplug */
+		case -EILSEQ:		/* unplug timectrl on uhci */
+			unplug = 1;
+		case -ECONNRESET:	/* unlink */
+		case -ENOENT:
+		case -EPIPE:		/* report not available */
+			break;
+		default:		/* error */
+			warn("ctrl urb status %d received", urb->status);
+	}
+
+	if (unplug)
+		hid->ctrltail = hid->ctrlhead;
+	else
+		hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
+
+	if (hid->ctrlhead != hid->ctrltail) {
+		if (hid_submit_ctrl(hid)) {
+			clear_bit(HID_CTRL_RUNNING, &hid->iofl);
+			wake_up(&hid->wait);
+		}
+		spin_unlock_irqrestore(&hid->ctrllock, flags);
+		return;
+	}
+
+	clear_bit(HID_CTRL_RUNNING, &hid->iofl);
+	spin_unlock_irqrestore(&hid->ctrllock, flags);
+	wake_up(&hid->wait);
+}
+
+void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
+{
+	int head;
+	unsigned long flags;
+
+	if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
+		return;
+
+	if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
+
+		spin_lock_irqsave(&hid->outlock, flags);
+
+		if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
+			spin_unlock_irqrestore(&hid->outlock, flags);
+			warn("output queue full");
+			return;
+		}
+
+		hid->out[hid->outhead] = report;
+		hid->outhead = head;
+
+		if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
+			if (hid_submit_out(hid))
+				clear_bit(HID_OUT_RUNNING, &hid->iofl);
+
+		spin_unlock_irqrestore(&hid->outlock, flags);
+		return;
+	}
+
+	spin_lock_irqsave(&hid->ctrllock, flags);
+
+	if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
+		spin_unlock_irqrestore(&hid->ctrllock, flags);
+		warn("control queue full");
+		return;
+	}
+
+	hid->ctrl[hid->ctrlhead].report = report;
+	hid->ctrl[hid->ctrlhead].dir = dir;
+	hid->ctrlhead = head;
+
+	if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
+		if (hid_submit_ctrl(hid))
+			clear_bit(HID_CTRL_RUNNING, &hid->iofl);
+
+	spin_unlock_irqrestore(&hid->ctrllock, flags);
+}
+
+int hid_wait_io(struct hid_device *hid)
+{
+	if (!wait_event_timeout(hid->wait, (!test_bit(HID_CTRL_RUNNING, &hid->iofl) &&
+					!test_bit(HID_OUT_RUNNING, &hid->iofl)),
+					10*HZ)) {
+		dbg("timeout waiting for ctrl or out queue to clear");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
+		unsigned char type, void *buf, int size)
+{
+	int result, retries = 4;
+
+	memset(buf,0,size);	// Make sure we parse really received data
+
+	do {
+		result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+				USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
+				(type << 8), ifnum, buf, size, USB_CTRL_GET_TIMEOUT);
+		retries--;
+	} while (result < size && retries);
+	return result;
+}
+
+int hid_open(struct hid_device *hid)
+{
+	if (hid->open++)
+		return 0;
+
+	hid->urbin->dev = hid->dev;
+
+	if (usb_submit_urb(hid->urbin, GFP_KERNEL))
+		return -EIO;
+
+	return 0;
+}
+
+void hid_close(struct hid_device *hid)
+{
+	if (!--hid->open)
+		usb_kill_urb(hid->urbin);
+}
+
+/*
+ * Initialize all reports
+ */
+
+void hid_init_reports(struct hid_device *hid)
+{
+	struct hid_report *report;
+	int err, ret;
+
+	list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) {
+		int size = ((report->size - 1) >> 3) + 1 + hid->report_enum[HID_INPUT_REPORT].numbered;
+		if (size > HID_BUFFER_SIZE) size = HID_BUFFER_SIZE;
+		if (size > hid->urbin->transfer_buffer_length)
+			hid->urbin->transfer_buffer_length = size;
+		hid_submit_report(hid, report, USB_DIR_IN);
+	}
+
+	list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list)
+		hid_submit_report(hid, report, USB_DIR_IN);
+
+	err = 0;
+	ret = hid_wait_io(hid);
+	while (ret) {
+		err |= ret;
+		if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
+			usb_kill_urb(hid->urbctrl);
+		if (test_bit(HID_OUT_RUNNING, &hid->iofl))
+			usb_kill_urb(hid->urbout);
+		ret = hid_wait_io(hid);
+	}
+
+	if (err)
+		warn("timeout initializing reports\n");
+
+	usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
+		HID_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, 0,
+		hid->ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT);
+}
+
+#define USB_VENDOR_ID_WACOM		0x056a
+#define USB_DEVICE_ID_WACOM_PENPARTNER	0x0000
+#define USB_DEVICE_ID_WACOM_GRAPHIRE	0x0010
+#define USB_DEVICE_ID_WACOM_INTUOS	0x0020
+#define USB_DEVICE_ID_WACOM_PL		0x0030
+#define USB_DEVICE_ID_WACOM_INTUOS2	0x0040
+#define USB_DEVICE_ID_WACOM_VOLITO	0x0060
+#define USB_DEVICE_ID_WACOM_PTU		0x0003
+
+#define USB_VENDOR_ID_KBGEAR		0x084e
+#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO	0x1001
+
+#define USB_VENDOR_ID_AIPTEK		0x08ca
+#define USB_DEVICE_ID_AIPTEK_01		0x0001
+#define USB_DEVICE_ID_AIPTEK_10		0x0010
+#define USB_DEVICE_ID_AIPTEK_20		0x0020
+#define USB_DEVICE_ID_AIPTEK_21		0x0021
+#define USB_DEVICE_ID_AIPTEK_22		0x0022
+#define USB_DEVICE_ID_AIPTEK_23		0x0023
+#define USB_DEVICE_ID_AIPTEK_24		0x0024
+
+#define USB_VENDOR_ID_GRIFFIN		0x077d
+#define USB_DEVICE_ID_POWERMATE		0x0410
+#define USB_DEVICE_ID_SOUNDKNOB		0x04AA
+
+#define USB_VENDOR_ID_ATEN		0x0557
+#define USB_DEVICE_ID_ATEN_UC100KM	0x2004
+#define USB_DEVICE_ID_ATEN_CS124U	0x2202
+#define USB_DEVICE_ID_ATEN_2PORTKVM	0x2204
+#define USB_DEVICE_ID_ATEN_4PORTKVM	0x2205
+#define USB_DEVICE_ID_ATEN_4PORTKVMC	0x2208
+
+#define USB_VENDOR_ID_TOPMAX		0x0663
+#define USB_DEVICE_ID_TOPMAX_COBRAPAD	0x0103
+
+#define USB_VENDOR_ID_HAPP		0x078b
+#define USB_DEVICE_ID_UGCI_DRIVING	0x0010
+#define USB_DEVICE_ID_UGCI_FLYING	0x0020
+#define USB_DEVICE_ID_UGCI_FIGHTING	0x0030
+
+#define USB_VENDOR_ID_MGE		0x0463
+#define USB_DEVICE_ID_MGE_UPS		0xffff
+#define USB_DEVICE_ID_MGE_UPS1		0x0001
+
+#define USB_VENDOR_ID_ONTRAK		0x0a07
+#define USB_DEVICE_ID_ONTRAK_ADU100	0x0064
+
+#define USB_VENDOR_ID_TANGTOP		0x0d3d
+#define USB_DEVICE_ID_TANGTOP_USBPS2	0x0001
+
+#define USB_VENDOR_ID_ESSENTIAL_REALITY	0x0d7f
+#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
+
+#define USB_VENDOR_ID_A4TECH		0x09da
+#define USB_DEVICE_ID_A4TECH_WCP32PU	0x0006
+
+#define USB_VENDOR_ID_CYPRESS		0x04b4
+#define USB_DEVICE_ID_CYPRESS_MOUSE	0x0001
+#define USB_DEVICE_ID_CYPRESS_HIDCOM	0x5500
+
+#define USB_VENDOR_ID_BERKSHIRE		0x0c98
+#define USB_DEVICE_ID_BERKSHIRE_PCWD	0x1140
+
+#define USB_VENDOR_ID_ALPS		0x0433
+#define USB_DEVICE_ID_IBM_GAMEPAD	0x1101
+
+#define USB_VENDOR_ID_SAITEK		0x06a3
+#define USB_DEVICE_ID_SAITEK_RUMBLEPAD	0xff17
+
+#define USB_VENDOR_ID_NEC		0x073e
+#define USB_DEVICE_ID_NEC_USB_GAME_PAD	0x0301
+
+#define USB_VENDOR_ID_CHIC		0x05fe
+#define USB_DEVICE_ID_CHIC_GAMEPAD	0x0014
+
+#define USB_VENDOR_ID_GLAB		0x06c2
+#define USB_DEVICE_ID_4_PHIDGETSERVO_30	0x0038
+#define USB_DEVICE_ID_1_PHIDGETSERVO_30	0x0039
+#define USB_DEVICE_ID_8_8_8_IF_KIT	0x0045
+#define USB_DEVICE_ID_0_0_4_IF_KIT	0x0040
+#define USB_DEVICE_ID_0_8_8_IF_KIT	0x0053
+
+#define USB_VENDOR_ID_WISEGROUP		0x0925
+#define USB_DEVICE_ID_1_PHIDGETSERVO_20	0x8101
+#define USB_DEVICE_ID_4_PHIDGETSERVO_20	0x8104
+
+#define USB_VENDOR_ID_CODEMERCS		0x07c0
+#define USB_DEVICE_ID_CODEMERCS_IOW40	0x1500
+#define USB_DEVICE_ID_CODEMERCS_IOW24	0x1501
+#define USB_DEVICE_ID_CODEMERCS_IOW48	0x1502
+#define USB_DEVICE_ID_CODEMERCS_IOW28	0x1503
+
+#define USB_VENDOR_ID_DELORME		0x1163
+#define USB_DEVICE_ID_DELORME_EARTHMATE 0x0100
+
+#define USB_VENDOR_ID_MCC		0x09db
+#define USB_DEVICE_ID_MCC_PMD1024LS	0x0076
+#define USB_DEVICE_ID_MCC_PMD1208LS	0x007a
+
+#define USB_VENDOR_ID_CHICONY		0x04f2
+#define USB_DEVICE_ID_CHICONY_USBHUB_KB	0x0100
+
+#define USB_VENDOR_ID_BTC		0x046e
+#define USB_DEVICE_ID_BTC_KEYBOARD	0x5303
+
+
+/*
+ * Alphabetically sorted blacklist by quirk type.
+ */
+
+static struct hid_blacklist {
+	__u16 idVendor;
+	__u16 idProduct;
+	unsigned quirks;
+} hid_blacklist[] = {
+
+	{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW40, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW24, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW48, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_CODEMERCS, USB_DEVICE_ID_CODEMERCS_IOW28, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_4_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_1_PHIDGETSERVO_30, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_8_8_8_IF_KIT, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_0_4_IF_KIT, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_GLAB, USB_DEVICE_ID_0_8_8_IF_KIT, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_4_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
+	{ USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_1_PHIDGETSERVO_20, HID_QUIRK_IGNORE },
+
+	{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
+	{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
+	{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
+	{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
+	{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
+	{ USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_KEYBOARD, HID_QUIRK_NOGET},
+	{ USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_USBHUB_KB, HID_QUIRK_NOGET},
+	{ USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
+
+	{ USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_7 },
+	{ USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_5 },
+
+	{ USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
+	{ USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
+	{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
+	{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
+	{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
+	{ USB_VENDOR_ID_NEC, USB_DEVICE_ID_NEC_USB_GAME_PAD, HID_QUIRK_BADPAD },
+	{ USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
+	{ USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
+
+	{ 0, 0 }
+};
+
+static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
+{
+	if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
+		return -1;
+	if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
+		return -1;
+	if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
+		return -1;
+	if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
+		return -1;
+
+	return 0;
+}
+
+static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
+{
+	if (hid->inbuf)
+		usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
+	if (hid->outbuf)
+		usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
+	if (hid->cr)
+		usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
+	if (hid->ctrlbuf)
+		usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
+}
+
+static struct hid_device *usb_hid_configure(struct usb_interface *intf)
+{
+	struct usb_host_interface *interface = intf->cur_altsetting;
+	struct usb_device *dev = interface_to_usbdev (intf);
+	struct hid_descriptor *hdesc;
+	struct hid_device *hid;
+	unsigned quirks = 0, rsize = 0;
+	char *buf, *rdesc;
+	int n;
+
+	for (n = 0; hid_blacklist[n].idVendor; n++)
+		if ((hid_blacklist[n].idVendor == le16_to_cpu(dev->descriptor.idVendor)) &&
+			(hid_blacklist[n].idProduct == le16_to_cpu(dev->descriptor.idProduct)))
+				quirks = hid_blacklist[n].quirks;
+
+	if (quirks & HID_QUIRK_IGNORE)
+		return NULL;
+
+	if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
+		usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
+			dbg("class descriptor not present\n");
+			return NULL;
+	}
+
+	for (n = 0; n < hdesc->bNumDescriptors; n++)
+		if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
+			rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
+
+	if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
+		dbg("weird size of report descriptor (%u)", rsize);
+		return NULL;
+	}
+
+	if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
+		dbg("couldn't allocate rdesc memory");
+		return NULL;
+	}
+
+	if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
+		dbg("reading report descriptor failed");
+		kfree(rdesc);
+		return NULL;
+	}
+
+#ifdef DEBUG_DATA
+	printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
+	for (n = 0; n < rsize; n++)
+		printk(" %02x", (unsigned char) rdesc[n]);
+	printk("\n");
+#endif
+
+	if (!(hid = hid_parse_report(rdesc, n))) {
+		dbg("parsing report descriptor failed");
+		kfree(rdesc);
+		return NULL;
+	}
+
+	kfree(rdesc);
+	hid->quirks = quirks;
+
+	if (hid_alloc_buffers(dev, hid)) {
+		hid_free_buffers(dev, hid);
+		goto fail;
+	}
+
+	for (n = 0; n < interface->desc.bNumEndpoints; n++) {
+
+		struct usb_endpoint_descriptor *endpoint;
+		int pipe;
+		int interval;
+
+		endpoint = &interface->endpoint[n].desc;
+		if ((endpoint->bmAttributes & 3) != 3)		/* Not an interrupt endpoint */
+			continue;
+
+		/* handle potential highspeed HID correctly */
+		interval = endpoint->bInterval;
+		if (dev->speed == USB_SPEED_HIGH)
+			interval = 1 << (interval - 1);
+
+		/* Change the polling interval of mice. */
+		if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0)
+			interval = hid_mousepoll_interval;
+		
+		if (endpoint->bEndpointAddress & USB_DIR_IN) {
+			if (hid->urbin)
+				continue;
+			if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
+				goto fail;
+			pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
+			usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, 0,
+					 hid_irq_in, hid, interval);
+			hid->urbin->transfer_dma = hid->inbuf_dma;
+			hid->urbin->transfer_flags |=(URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
+		} else {
+			if (hid->urbout)
+				continue;
+			if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
+				goto fail;
+			pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
+			usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
+					 hid_irq_out, hid, interval);
+			hid->urbout->transfer_dma = hid->outbuf_dma;
+			hid->urbout->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_ASYNC_UNLINK);
+		}
+	}
+
+	if (!hid->urbin) {
+		err("couldn't find an input interrupt endpoint");
+		goto fail;
+	}
+
+	init_waitqueue_head(&hid->wait);
+
+	spin_lock_init(&hid->outlock);
+	spin_lock_init(&hid->ctrllock);
+
+	hid->version = le16_to_cpu(hdesc->bcdHID);
+	hid->country = hdesc->bCountryCode;
+	hid->dev = dev;
+	hid->intf = intf;
+	hid->ifnum = interface->desc.bInterfaceNumber;
+
+	hid->name[0] = 0;
+
+	if (!(buf = kmalloc(64, GFP_KERNEL)))
+		goto fail;
+
+	if (dev->manufacturer) {
+		strcat(hid->name, dev->manufacturer);
+		if (dev->product)
+			snprintf(hid->name, 64, "%s %s", hid->name, dev->product);
+	} else if (dev->product) {
+			snprintf(hid->name, 128, "%s", dev->product);
+	} else
+		snprintf(hid->name, 128, "%04x:%04x",
+			le16_to_cpu(dev->descriptor.idVendor),
+			le16_to_cpu(dev->descriptor.idProduct));
+
+	usb_make_path(dev, buf, 64);
+	snprintf(hid->phys, 64, "%s/input%d", buf,
+			intf->altsetting[0].desc.bInterfaceNumber);
+
+	if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
+		hid->uniq[0] = 0;
+
+	kfree(buf);
+
+	hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
+	if (!hid->urbctrl)
+		goto fail;
+	usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
+			     hid->ctrlbuf, 1, hid_ctrl, hid);
+	hid->urbctrl->setup_dma = hid->cr_dma;
+	hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
+	hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP | URB_ASYNC_UNLINK);
+
+	return hid;
+
+fail:
+
+	if (hid->urbin)
+		usb_free_urb(hid->urbin);
+	if (hid->urbout)
+		usb_free_urb(hid->urbout);
+	if (hid->urbctrl)
+		usb_free_urb(hid->urbctrl);
+	hid_free_buffers(dev, hid);
+	hid_free_device(hid);
+
+	return NULL;
+}
+
+static void hid_disconnect(struct usb_interface *intf)
+{
+	struct hid_device *hid = usb_get_intfdata (intf);
+
+	if (!hid)
+		return;
+
+	usb_set_intfdata(intf, NULL);
+	usb_kill_urb(hid->urbin);
+	usb_kill_urb(hid->urbout);
+	usb_kill_urb(hid->urbctrl);
+
+	if (hid->claimed & HID_CLAIMED_INPUT)
+		hidinput_disconnect(hid);
+	if (hid->claimed & HID_CLAIMED_HIDDEV)
+		hiddev_disconnect(hid);
+
+	usb_free_urb(hid->urbin);
+	usb_free_urb(hid->urbctrl);
+	if (hid->urbout)
+		usb_free_urb(hid->urbout);
+
+	hid_free_buffers(hid->dev, hid);
+	hid_free_device(hid);
+}
+
+static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id)
+{
+	struct hid_device *hid;
+	char path[64];
+	int i;
+	char *c;
+
+	dbg("HID probe called for ifnum %d",
+			intf->altsetting->desc.bInterfaceNumber);
+
+	if (!(hid = usb_hid_configure(intf)))
+		return -EIO;
+
+	hid_init_reports(hid);
+	hid_dump_device(hid);
+
+	if (!hidinput_connect(hid))
+		hid->claimed |= HID_CLAIMED_INPUT;
+	if (!hiddev_connect(hid))
+		hid->claimed |= HID_CLAIMED_HIDDEV;
+
+	usb_set_intfdata(intf, hid);
+
+	if (!hid->claimed) {
+		printk ("HID device not claimed by input or hiddev\n");
+		hid_disconnect(intf);
+		return -EIO;
+	}
+
+	printk(KERN_INFO);
+
+	if (hid->claimed & HID_CLAIMED_INPUT)
+		printk("input");
+	if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
+		printk(",");
+	if (hid->claimed & HID_CLAIMED_HIDDEV)
+		printk("hiddev%d", hid->minor);
+
+	c = "Device";
+	for (i = 0; i < hid->maxcollection; i++) {
+		if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
+		    (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
+		    (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
+			c = hid_types[hid->collection[i].usage & 0xffff];
+			break;
+		}
+	}
+
+	usb_make_path(interface_to_usbdev(intf), path, 63);
+
+	printk(": USB HID v%x.%02x %s [%s] on %s\n",
+		hid->version >> 8, hid->version & 0xff, c, hid->name, path);
+
+	return 0;
+}
+
+static int hid_suspend(struct usb_interface *intf, u32 state)
+{
+	struct hid_device *hid = usb_get_intfdata (intf);
+
+	usb_kill_urb(hid->urbin);
+	intf->dev.power.power_state = state;
+	dev_dbg(&intf->dev, "suspend\n");
+	return 0;
+}
+
+static int hid_resume(struct usb_interface *intf)
+{
+	struct hid_device *hid = usb_get_intfdata (intf);
+	int status;
+
+	intf->dev.power.power_state = PM_SUSPEND_ON;
+	if (hid->open)
+		status = usb_submit_urb(hid->urbin, GFP_NOIO);
+	else
+		status = 0;
+	dev_dbg(&intf->dev, "resume status %d\n", status);
+	return status;
+}
+
+static struct usb_device_id hid_usb_ids [] = {
+	{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
+		.bInterfaceClass = USB_INTERFACE_CLASS_HID },
+	{ }						/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE (usb, hid_usb_ids);
+
+static struct usb_driver hid_driver = {
+	.owner =	THIS_MODULE,
+	.name =		"usbhid",
+	.probe =	hid_probe,
+	.disconnect =	hid_disconnect,
+	.suspend =	hid_suspend,
+	.resume =	hid_resume,
+	.id_table =	hid_usb_ids,
+};
+
+static int __init hid_init(void)
+{
+	int retval;
+	retval = hiddev_init();
+	if (retval)
+		goto hiddev_init_fail;
+	retval = usb_register(&hid_driver);
+	if (retval)
+		goto usb_register_fail;
+	info(DRIVER_VERSION ":" DRIVER_DESC);
+
+	return 0;
+usb_register_fail:
+	hiddev_exit();
+hiddev_init_fail:
+	return retval;
+}
+
+static void __exit hid_exit(void)
+{
+	usb_deregister(&hid_driver);
+	hiddev_exit();
+}
+
+module_init(hid_init);
+module_exit(hid_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE(DRIVER_LICENSE);