Linux-2.6.12-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, 748 insertions, 0 deletions

diff --git a/drivers/input/input.c b/drivers/input/input.c
new file mode 100644
index 000000000000..3385dd03abfc
--- /dev/null
+++ b/drivers/input/input.c
@@ -0,0 +1,748 @@
+/*
+ * The input core
+ *
+ * Copyright (c) 1999-2002 Vojtech Pavlik
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/smp_lock.h>
+#include <linux/input.h>
+#include <linux/module.h>
+#include <linux/random.h>
+#include <linux/major.h>
+#include <linux/proc_fs.h>
+#include <linux/kobject_uevent.h>
+#include <linux/interrupt.h>
+#include <linux/poll.h>
+#include <linux/device.h>
+#include <linux/devfs_fs_kernel.h>
+
+MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
+MODULE_DESCRIPTION("Input core");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(input_register_device);
+EXPORT_SYMBOL(input_unregister_device);
+EXPORT_SYMBOL(input_register_handler);
+EXPORT_SYMBOL(input_unregister_handler);
+EXPORT_SYMBOL(input_grab_device);
+EXPORT_SYMBOL(input_release_device);
+EXPORT_SYMBOL(input_open_device);
+EXPORT_SYMBOL(input_close_device);
+EXPORT_SYMBOL(input_accept_process);
+EXPORT_SYMBOL(input_flush_device);
+EXPORT_SYMBOL(input_event);
+EXPORT_SYMBOL(input_class);
+
+#define INPUT_DEVICES	256
+
+static LIST_HEAD(input_dev_list);
+static LIST_HEAD(input_handler_list);
+
+static struct input_handler *input_table[8];
+
+#ifdef CONFIG_PROC_FS
+static struct proc_dir_entry *proc_bus_input_dir;
+static DECLARE_WAIT_QUEUE_HEAD(input_devices_poll_wait);
+static int input_devices_state;
+#endif
+
+void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+	struct input_handle *handle;
+
+	if (type > EV_MAX || !test_bit(type, dev->evbit))
+		return;
+
+	add_input_randomness(type, code, value);
+
+	switch (type) {
+
+		case EV_SYN:
+			switch (code) {
+				case SYN_CONFIG:
+					if (dev->event) dev->event(dev, type, code, value);
+					break;
+
+				case SYN_REPORT:
+					if (dev->sync) return;
+					dev->sync = 1;
+					break;
+			}
+			break;
+
+		case EV_KEY:
+
+			if (code > KEY_MAX || !test_bit(code, dev->keybit) || !!test_bit(code, dev->key) == value)
+				return;
+
+			if (value == 2)
+				break;
+
+			change_bit(code, dev->key);
+
+			if (test_bit(EV_REP, dev->evbit) && dev->rep[REP_PERIOD] && dev->rep[REP_DELAY] && dev->timer.data && value) {
+				dev->repeat_key = code;
+				mod_timer(&dev->timer, jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]));
+			}
+
+			break;
+
+		case EV_ABS:
+
+			if (code > ABS_MAX || !test_bit(code, dev->absbit))
+				return;
+
+			if (dev->absfuzz[code]) {
+				if ((value > dev->abs[code] - (dev->absfuzz[code] >> 1)) &&
+				    (value < dev->abs[code] + (dev->absfuzz[code] >> 1)))
+					return;
+
+				if ((value > dev->abs[code] - dev->absfuzz[code]) &&
+				    (value < dev->abs[code] + dev->absfuzz[code]))
+					value = (dev->abs[code] * 3 + value) >> 2;
+
+				if ((value > dev->abs[code] - (dev->absfuzz[code] << 1)) &&
+				    (value < dev->abs[code] + (dev->absfuzz[code] << 1)))
+					value = (dev->abs[code] + value) >> 1;
+			}
+
+			if (dev->abs[code] == value)
+				return;
+
+			dev->abs[code] = value;
+			break;
+
+		case EV_REL:
+
+			if (code > REL_MAX || !test_bit(code, dev->relbit) || (value == 0))
+				return;
+
+			break;
+
+		case EV_MSC:
+
+			if (code > MSC_MAX || !test_bit(code, dev->mscbit))
+				return;
+
+			if (dev->event) dev->event(dev, type, code, value);
+
+			break;
+
+		case EV_LED:
+
+			if (code > LED_MAX || !test_bit(code, dev->ledbit) || !!test_bit(code, dev->led) == value)
+				return;
+
+			change_bit(code, dev->led);
+			if (dev->event) dev->event(dev, type, code, value);
+
+			break;
+
+		case EV_SND:
+
+			if (code > SND_MAX || !test_bit(code, dev->sndbit))
+				return;
+
+			if (dev->event) dev->event(dev, type, code, value);
+
+			break;
+
+		case EV_REP:
+
+			if (code > REP_MAX || value < 0 || dev->rep[code] == value) return;
+
+			dev->rep[code] = value;
+			if (dev->event) dev->event(dev, type, code, value);
+
+			break;
+
+		case EV_FF:
+			if (dev->event) dev->event(dev, type, code, value);
+			break;
+	}
+
+	if (type != EV_SYN)
+		dev->sync = 0;
+
+	if (dev->grab)
+		dev->grab->handler->event(dev->grab, type, code, value);
+	else
+		list_for_each_entry(handle, &dev->h_list, d_node)
+			if (handle->open)
+				handle->handler->event(handle, type, code, value);
+}
+
+static void input_repeat_key(unsigned long data)
+{
+	struct input_dev *dev = (void *) data;
+
+	if (!test_bit(dev->repeat_key, dev->key))
+		return;
+
+	input_event(dev, EV_KEY, dev->repeat_key, 2);
+	input_sync(dev);
+
+	if (dev->rep[REP_PERIOD])
+		mod_timer(&dev->timer, jiffies + msecs_to_jiffies(dev->rep[REP_PERIOD]));
+}
+
+int input_accept_process(struct input_handle *handle, struct file *file)
+{
+	if (handle->dev->accept)
+		return handle->dev->accept(handle->dev, file);
+
+	return 0;
+}
+
+int input_grab_device(struct input_handle *handle)
+{
+	if (handle->dev->grab)
+		return -EBUSY;
+
+	handle->dev->grab = handle;
+	return 0;
+}
+
+void input_release_device(struct input_handle *handle)
+{
+	if (handle->dev->grab == handle)
+		handle->dev->grab = NULL;
+}
+
+int input_open_device(struct input_handle *handle)
+{
+	handle->open++;
+	if (handle->dev->open)
+		return handle->dev->open(handle->dev);
+	return 0;
+}
+
+int input_flush_device(struct input_handle* handle, struct file* file)
+{
+	if (handle->dev->flush)
+		return handle->dev->flush(handle->dev, file);
+
+	return 0;
+}
+
+void input_close_device(struct input_handle *handle)
+{
+	input_release_device(handle);
+	if (handle->dev->close)
+		handle->dev->close(handle->dev);
+	handle->open--;
+}
+
+static void input_link_handle(struct input_handle *handle)
+{
+	list_add_tail(&handle->d_node, &handle->dev->h_list);
+	list_add_tail(&handle->h_node, &handle->handler->h_list);
+}
+
+#define MATCH_BIT(bit, max) \
+		for (i = 0; i < NBITS(max); i++) \
+			if ((id->bit[i] & dev->bit[i]) != id->bit[i]) \
+				break; \
+		if (i != NBITS(max)) \
+			continue;
+
+static struct input_device_id *input_match_device(struct input_device_id *id, struct input_dev *dev)
+{
+	int i;
+
+	for (; id->flags || id->driver_info; id++) {
+
+		if (id->flags & INPUT_DEVICE_ID_MATCH_BUS)
+			if (id->id.bustype != dev->id.bustype)
+				continue;
+
+		if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR)
+			if (id->id.vendor != dev->id.vendor)
+				continue;
+
+		if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT)
+			if (id->id.product != dev->id.product)
+				continue;
+
+		if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION)
+			if (id->id.version != dev->id.version)
+				continue;
+
+		MATCH_BIT(evbit,  EV_MAX);
+		MATCH_BIT(keybit, KEY_MAX);
+		MATCH_BIT(relbit, REL_MAX);
+		MATCH_BIT(absbit, ABS_MAX);
+		MATCH_BIT(mscbit, MSC_MAX);
+		MATCH_BIT(ledbit, LED_MAX);
+		MATCH_BIT(sndbit, SND_MAX);
+		MATCH_BIT(ffbit,  FF_MAX);
+
+		return id;
+	}
+
+	return NULL;
+}
+
+/*
+ * Input hotplugging interface - loading event handlers based on
+ * device bitfields.
+ */
+
+#ifdef CONFIG_HOTPLUG
+
+/*
+ * Input hotplugging invokes what /proc/sys/kernel/hotplug says
+ * (normally /sbin/hotplug) when input devices get added or removed.
+ *
+ * This invokes a user mode policy agent, typically helping to load driver
+ * or other modules, configure the device, and more.  Drivers can provide
+ * a MODULE_DEVICE_TABLE to help with module loading subtasks.
+ *
+ */
+
+#define SPRINTF_BIT_A(bit, name, max) \
+	do { \
+		envp[i++] = scratch; \
+		scratch += sprintf(scratch, name); \
+		for (j = NBITS(max) - 1; j >= 0; j--) \
+			if (dev->bit[j]) break; \
+		for (; j >= 0; j--) \
+			scratch += sprintf(scratch, "%lx ", dev->bit[j]); \
+		scratch++; \
+	} while (0)
+
+#define SPRINTF_BIT_A2(bit, name, max, ev) \
+	do { \
+		if (test_bit(ev, dev->evbit)) \
+			SPRINTF_BIT_A(bit, name, max); \
+	} while (0)
+
+static void input_call_hotplug(char *verb, struct input_dev *dev)
+{
+	char *argv[3], **envp, *buf, *scratch;
+	int i = 0, j, value;
+
+	if (!hotplug_path[0]) {
+		printk(KERN_ERR "input.c: calling hotplug without a hotplug agent defined\n");
+		return;
+	}
+	if (in_interrupt()) {
+		printk(KERN_ERR "input.c: calling hotplug from interrupt\n");
+		return;
+	}
+	if (!current->fs->root) {
+		printk(KERN_WARNING "input.c: calling hotplug without valid filesystem\n");
+		return;
+	}
+	if (!(envp = (char **) kmalloc(20 * sizeof(char *), GFP_KERNEL))) {
+		printk(KERN_ERR "input.c: not enough memory allocating hotplug environment\n");
+		return;
+	}
+	if (!(buf = kmalloc(1024, GFP_KERNEL))) {
+		kfree (envp);
+		printk(KERN_ERR "input.c: not enough memory allocating hotplug environment\n");
+		return;
+	}
+
+	argv[0] = hotplug_path;
+	argv[1] = "input";
+	argv[2] = NULL;
+
+	envp[i++] = "HOME=/";
+	envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
+
+	scratch = buf;
+
+	envp[i++] = scratch;
+	scratch += sprintf(scratch, "ACTION=%s", verb) + 1;
+
+	envp[i++] = scratch;
+	scratch += sprintf(scratch, "PRODUCT=%x/%x/%x/%x",
+		dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version) + 1;
+
+	if (dev->name) {
+		envp[i++] = scratch;
+		scratch += sprintf(scratch, "NAME=%s", dev->name) + 1;
+	}
+
+	if (dev->phys) {
+		envp[i++] = scratch;
+		scratch += sprintf(scratch, "PHYS=%s", dev->phys) + 1;
+	}
+
+	SPRINTF_BIT_A(evbit, "EV=", EV_MAX);
+	SPRINTF_BIT_A2(keybit, "KEY=", KEY_MAX, EV_KEY);
+	SPRINTF_BIT_A2(relbit, "REL=", REL_MAX, EV_REL);
+	SPRINTF_BIT_A2(absbit, "ABS=", ABS_MAX, EV_ABS);
+	SPRINTF_BIT_A2(mscbit, "MSC=", MSC_MAX, EV_MSC);
+	SPRINTF_BIT_A2(ledbit, "LED=", LED_MAX, EV_LED);
+	SPRINTF_BIT_A2(sndbit, "SND=", SND_MAX, EV_SND);
+	SPRINTF_BIT_A2(ffbit,  "FF=",  FF_MAX, EV_FF);
+
+	envp[i++] = NULL;
+
+#ifdef INPUT_DEBUG
+	printk(KERN_DEBUG "input.c: calling %s %s [%s %s %s %s %s]\n",
+		argv[0], argv[1], envp[0], envp[1], envp[2], envp[3], envp[4]);
+#endif
+
+	value = call_usermodehelper(argv [0], argv, envp, 0);
+
+	kfree(buf);
+	kfree(envp);
+
+#ifdef INPUT_DEBUG
+	if (value != 0)
+		printk(KERN_DEBUG "input.c: hotplug returned %d\n", value);
+#endif
+}
+
+#endif
+
+void input_register_device(struct input_dev *dev)
+{
+	struct input_handle *handle;
+	struct input_handler *handler;
+	struct input_device_id *id;
+
+	set_bit(EV_SYN, dev->evbit);
+
+	/*
+	 * If delay and period are pre-set by the driver, then autorepeating
+	 * is handled by the driver itself and we don't do it in input.c.
+	 */
+
+	init_timer(&dev->timer);
+	if (!dev->rep[REP_DELAY] && !dev->rep[REP_PERIOD]) {
+		dev->timer.data = (long) dev;
+		dev->timer.function = input_repeat_key;
+		dev->rep[REP_DELAY] = 250;
+		dev->rep[REP_PERIOD] = 33;
+	}
+
+	INIT_LIST_HEAD(&dev->h_list);
+	list_add_tail(&dev->node, &input_dev_list);
+
+	list_for_each_entry(handler, &input_handler_list, node)
+		if (!handler->blacklist || !input_match_device(handler->blacklist, dev))
+			if ((id = input_match_device(handler->id_table, dev)))
+				if ((handle = handler->connect(handler, dev, id)))
+					input_link_handle(handle);
+
+#ifdef CONFIG_HOTPLUG
+	input_call_hotplug("add", dev);
+#endif
+
+#ifdef CONFIG_PROC_FS
+	input_devices_state++;
+	wake_up(&input_devices_poll_wait);
+#endif
+}
+
+void input_unregister_device(struct input_dev *dev)
+{
+	struct list_head * node, * next;
+
+	if (!dev) return;
+
+	del_timer_sync(&dev->timer);
+
+	list_for_each_safe(node, next, &dev->h_list) {
+		struct input_handle * handle = to_handle(node);
+		list_del_init(&handle->d_node);
+		list_del_init(&handle->h_node);
+		handle->handler->disconnect(handle);
+	}
+
+#ifdef CONFIG_HOTPLUG
+	input_call_hotplug("remove", dev);
+#endif
+
+	list_del_init(&dev->node);
+
+#ifdef CONFIG_PROC_FS
+	input_devices_state++;
+	wake_up(&input_devices_poll_wait);
+#endif
+}
+
+void input_register_handler(struct input_handler *handler)
+{
+	struct input_dev *dev;
+	struct input_handle *handle;
+	struct input_device_id *id;
+
+	if (!handler) return;
+
+	INIT_LIST_HEAD(&handler->h_list);
+
+	if (handler->fops != NULL)
+		input_table[handler->minor >> 5] = handler;
+
+	list_add_tail(&handler->node, &input_handler_list);
+
+	list_for_each_entry(dev, &input_dev_list, node)
+		if (!handler->blacklist || !input_match_device(handler->blacklist, dev))
+			if ((id = input_match_device(handler->id_table, dev)))
+				if ((handle = handler->connect(handler, dev, id)))
+					input_link_handle(handle);
+
+#ifdef CONFIG_PROC_FS
+	input_devices_state++;
+	wake_up(&input_devices_poll_wait);
+#endif
+}
+
+void input_unregister_handler(struct input_handler *handler)
+{
+	struct list_head * node, * next;
+
+	list_for_each_safe(node, next, &handler->h_list) {
+		struct input_handle * handle = to_handle_h(node);
+		list_del_init(&handle->h_node);
+		list_del_init(&handle->d_node);
+		handler->disconnect(handle);
+	}
+
+	list_del_init(&handler->node);
+
+	if (handler->fops != NULL)
+		input_table[handler->minor >> 5] = NULL;
+
+#ifdef CONFIG_PROC_FS
+	input_devices_state++;
+	wake_up(&input_devices_poll_wait);
+#endif
+}
+
+static int input_open_file(struct inode *inode, struct file *file)
+{
+	struct input_handler *handler = input_table[iminor(inode) >> 5];
+	struct file_operations *old_fops, *new_fops = NULL;
+	int err;
+
+	/* No load-on-demand here? */
+	if (!handler || !(new_fops = fops_get(handler->fops)))
+		return -ENODEV;
+
+	/*
+	 * That's _really_ odd. Usually NULL ->open means "nothing special",
+	 * not "no device". Oh, well...
+	 */
+	if (!new_fops->open) {
+		fops_put(new_fops);
+		return -ENODEV;
+	}
+	old_fops = file->f_op;
+	file->f_op = new_fops;
+
+	err = new_fops->open(inode, file);
+
+	if (err) {
+		fops_put(file->f_op);
+		file->f_op = fops_get(old_fops);
+	}
+	fops_put(old_fops);
+	return err;
+}
+
+static struct file_operations input_fops = {
+	.owner = THIS_MODULE,
+	.open = input_open_file,
+};
+
+#ifdef CONFIG_PROC_FS
+
+#define SPRINTF_BIT_B(bit, name, max) \
+	do { \
+		len += sprintf(buf + len, "B: %s", name); \
+		for (i = NBITS(max) - 1; i >= 0; i--) \
+			if (dev->bit[i]) break; \
+		for (; i >= 0; i--) \
+			len += sprintf(buf + len, "%lx ", dev->bit[i]); \
+		len += sprintf(buf + len, "\n"); \
+	} while (0)
+
+#define SPRINTF_BIT_B2(bit, name, max, ev) \
+	do { \
+		if (test_bit(ev, dev->evbit)) \
+			SPRINTF_BIT_B(bit, name, max); \
+	} while (0)
+
+
+static unsigned int input_devices_poll(struct file *file, poll_table *wait)
+{
+	int state = input_devices_state;
+	poll_wait(file, &input_devices_poll_wait, wait);
+	if (state != input_devices_state)
+		return POLLIN | POLLRDNORM;
+	return 0;
+}
+
+static int input_devices_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
+{
+	struct input_dev *dev;
+	struct input_handle *handle;
+
+	off_t at = 0;
+	int i, len, cnt = 0;
+
+	list_for_each_entry(dev, &input_dev_list, node) {
+
+		len = sprintf(buf, "I: Bus=%04x Vendor=%04x Product=%04x Version=%04x\n",
+			dev->id.bustype, dev->id.vendor, dev->id.product, dev->id.version);
+
+		len += sprintf(buf + len, "N: Name=\"%s\"\n", dev->name ? dev->name : "");
+		len += sprintf(buf + len, "P: Phys=%s\n", dev->phys ? dev->phys : "");
+		len += sprintf(buf + len, "H: Handlers=");
+
+		list_for_each_entry(handle, &dev->h_list, d_node)
+			len += sprintf(buf + len, "%s ", handle->name);
+
+		len += sprintf(buf + len, "\n");
+
+		SPRINTF_BIT_B(evbit, "EV=", EV_MAX);
+		SPRINTF_BIT_B2(keybit, "KEY=", KEY_MAX, EV_KEY);
+		SPRINTF_BIT_B2(relbit, "REL=", REL_MAX, EV_REL);
+		SPRINTF_BIT_B2(absbit, "ABS=", ABS_MAX, EV_ABS);
+		SPRINTF_BIT_B2(mscbit, "MSC=", MSC_MAX, EV_MSC);
+		SPRINTF_BIT_B2(ledbit, "LED=", LED_MAX, EV_LED);
+		SPRINTF_BIT_B2(sndbit, "SND=", SND_MAX, EV_SND);
+		SPRINTF_BIT_B2(ffbit,  "FF=",  FF_MAX, EV_FF);
+
+		len += sprintf(buf + len, "\n");
+
+		at += len;
+
+		if (at >= pos) {
+			if (!*start) {
+				*start = buf + (pos - (at - len));
+				cnt = at - pos;
+			} else  cnt += len;
+			buf += len;
+			if (cnt >= count)
+				break;
+		}
+	}
+
+	if (&dev->node == &input_dev_list)
+		*eof = 1;
+
+	return (count > cnt) ? cnt : count;
+}
+
+static int input_handlers_read(char *buf, char **start, off_t pos, int count, int *eof, void *data)
+{
+	struct input_handler *handler;
+
+	off_t at = 0;
+	int len = 0, cnt = 0;
+	int i = 0;
+
+	list_for_each_entry(handler, &input_handler_list, node) {
+
+		if (handler->fops)
+			len = sprintf(buf, "N: Number=%d Name=%s Minor=%d\n",
+				i++, handler->name, handler->minor);
+		else
+			len = sprintf(buf, "N: Number=%d Name=%s\n",
+				i++, handler->name);
+
+		at += len;
+
+		if (at >= pos) {
+			if (!*start) {
+				*start = buf + (pos - (at - len));
+				cnt = at - pos;
+			} else  cnt += len;
+			buf += len;
+			if (cnt >= count)
+				break;
+		}
+	}
+	if (&handler->node == &input_handler_list)
+		*eof = 1;
+
+	return (count > cnt) ? cnt : count;
+}
+
+static int __init input_proc_init(void)
+{
+	struct proc_dir_entry *entry;
+
+	proc_bus_input_dir = proc_mkdir("input", proc_bus);
+	if (proc_bus_input_dir == NULL)
+		return -ENOMEM;
+	proc_bus_input_dir->owner = THIS_MODULE;
+	entry = create_proc_read_entry("devices", 0, proc_bus_input_dir, input_devices_read, NULL);
+	if (entry == NULL) {
+		remove_proc_entry("input", proc_bus);
+		return -ENOMEM;
+	}
+	entry->owner = THIS_MODULE;
+	entry->proc_fops->poll = input_devices_poll;
+	entry = create_proc_read_entry("handlers", 0, proc_bus_input_dir, input_handlers_read, NULL);
+	if (entry == NULL) {
+		remove_proc_entry("devices", proc_bus_input_dir);
+		remove_proc_entry("input", proc_bus);
+		return -ENOMEM;
+	}
+	entry->owner = THIS_MODULE;
+	return 0;
+}
+#else /* !CONFIG_PROC_FS */
+static inline int input_proc_init(void) { return 0; }
+#endif
+
+struct class_simple *input_class;
+
+static int __init input_init(void)
+{
+	int retval = -ENOMEM;
+
+	input_class = class_simple_create(THIS_MODULE, "input");
+	if (IS_ERR(input_class))
+		return PTR_ERR(input_class);
+	input_proc_init();
+	retval = register_chrdev(INPUT_MAJOR, "input", &input_fops);
+	if (retval) {
+		printk(KERN_ERR "input: unable to register char major %d", INPUT_MAJOR);
+		remove_proc_entry("devices", proc_bus_input_dir);
+		remove_proc_entry("handlers", proc_bus_input_dir);
+		remove_proc_entry("input", proc_bus);
+		class_simple_destroy(input_class);
+		return retval;
+	}
+
+	retval = devfs_mk_dir("input");
+	if (retval) {
+		remove_proc_entry("devices", proc_bus_input_dir);
+		remove_proc_entry("handlers", proc_bus_input_dir);
+		remove_proc_entry("input", proc_bus);
+		unregister_chrdev(INPUT_MAJOR, "input");
+		class_simple_destroy(input_class);
+	}
+	return retval;
+}
+
+static void __exit input_exit(void)
+{
+	remove_proc_entry("devices", proc_bus_input_dir);
+	remove_proc_entry("handlers", proc_bus_input_dir);
+	remove_proc_entry("input", proc_bus);
+
+	devfs_remove("input");
+	unregister_chrdev(INPUT_MAJOR, "input");
+	class_simple_destroy(input_class);
+}
+
+subsys_initcall(input_init);
+module_exit(input_exit);