11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Raw serio device providing access to a raw byte stream from underlying 31da177e4SLinus Torvalds * serio port. Closely emulates behavior of pre-2.6 /dev/psaux device 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Copyright (c) 2004 Dmitry Torokhov 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify it 81da177e4SLinus Torvalds * under the terms of the GNU General Public License version 2 as published by 91da177e4SLinus Torvalds * the Free Software Foundation. 101da177e4SLinus Torvalds */ 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds #include <linux/slab.h> 131da177e4SLinus Torvalds #include <linux/poll.h> 141da177e4SLinus Torvalds #include <linux/module.h> 151da177e4SLinus Torvalds #include <linux/serio.h> 161da177e4SLinus Torvalds #include <linux/init.h> 171da177e4SLinus Torvalds #include <linux/major.h> 181da177e4SLinus Torvalds #include <linux/device.h> 191da177e4SLinus Torvalds #include <linux/miscdevice.h> 201da177e4SLinus Torvalds #include <linux/wait.h> 21c4e32e9fSArjan van de Ven #include <linux/mutex.h> 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #define DRIVER_DESC "Raw serio driver" 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>"); 261da177e4SLinus Torvalds MODULE_DESCRIPTION(DRIVER_DESC); 271da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 281da177e4SLinus Torvalds 291da177e4SLinus Torvalds #define SERIO_RAW_QUEUE_LEN 64 301da177e4SLinus Torvalds struct serio_raw { 311da177e4SLinus Torvalds unsigned char queue[SERIO_RAW_QUEUE_LEN]; 321da177e4SLinus Torvalds unsigned int tail, head; 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds char name[16]; 351da177e4SLinus Torvalds unsigned int refcnt; 361da177e4SLinus Torvalds struct serio *serio; 371da177e4SLinus Torvalds struct miscdevice dev; 381da177e4SLinus Torvalds wait_queue_head_t wait; 391da177e4SLinus Torvalds struct list_head list; 401da177e4SLinus Torvalds struct list_head node; 411da177e4SLinus Torvalds }; 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds struct serio_raw_list { 441da177e4SLinus Torvalds struct fasync_struct *fasync; 451da177e4SLinus Torvalds struct serio_raw *serio_raw; 461da177e4SLinus Torvalds struct list_head node; 471da177e4SLinus Torvalds }; 481da177e4SLinus Torvalds 49c4e32e9fSArjan van de Ven static DEFINE_MUTEX(serio_raw_mutex); 501da177e4SLinus Torvalds static LIST_HEAD(serio_raw_list); 511da177e4SLinus Torvalds static unsigned int serio_raw_no; 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds /********************************************************************* 541da177e4SLinus Torvalds * Interface with userspace (file operations) * 551da177e4SLinus Torvalds *********************************************************************/ 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds static int serio_raw_fasync(int fd, struct file *file, int on) 581da177e4SLinus Torvalds { 591da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 601da177e4SLinus Torvalds int retval; 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds retval = fasync_helper(fd, file, on, &list->fasync); 631da177e4SLinus Torvalds return retval < 0 ? retval : 0; 641da177e4SLinus Torvalds } 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds static struct serio_raw *serio_raw_locate(int minor) 671da177e4SLinus Torvalds { 681da177e4SLinus Torvalds struct serio_raw *serio_raw; 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds list_for_each_entry(serio_raw, &serio_raw_list, node) { 711da177e4SLinus Torvalds if (serio_raw->dev.minor == minor) 721da177e4SLinus Torvalds return serio_raw; 731da177e4SLinus Torvalds } 741da177e4SLinus Torvalds 751da177e4SLinus Torvalds return NULL; 761da177e4SLinus Torvalds } 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds static int serio_raw_open(struct inode *inode, struct file *file) 791da177e4SLinus Torvalds { 801da177e4SLinus Torvalds struct serio_raw *serio_raw; 811da177e4SLinus Torvalds struct serio_raw_list *list; 821da177e4SLinus Torvalds int retval = 0; 831da177e4SLinus Torvalds 84c4e32e9fSArjan van de Ven retval = mutex_lock_interruptible(&serio_raw_mutex); 851da177e4SLinus Torvalds if (retval) 861da177e4SLinus Torvalds return retval; 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds if (!(serio_raw = serio_raw_locate(iminor(inode)))) { 891da177e4SLinus Torvalds retval = -ENODEV; 901da177e4SLinus Torvalds goto out; 911da177e4SLinus Torvalds } 921da177e4SLinus Torvalds 931da177e4SLinus Torvalds if (!serio_raw->serio) { 941da177e4SLinus Torvalds retval = -ENODEV; 951da177e4SLinus Torvalds goto out; 961da177e4SLinus Torvalds } 971da177e4SLinus Torvalds 98b39787a9SEric Sesterhenn if (!(list = kzalloc(sizeof(struct serio_raw_list), GFP_KERNEL))) { 991da177e4SLinus Torvalds retval = -ENOMEM; 1001da177e4SLinus Torvalds goto out; 1011da177e4SLinus Torvalds } 1021da177e4SLinus Torvalds 1031da177e4SLinus Torvalds list->serio_raw = serio_raw; 1041da177e4SLinus Torvalds file->private_data = list; 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds serio_raw->refcnt++; 1071da177e4SLinus Torvalds list_add_tail(&list->node, &serio_raw->list); 1081da177e4SLinus Torvalds 1091da177e4SLinus Torvalds out: 110c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 1111da177e4SLinus Torvalds return retval; 1121da177e4SLinus Torvalds } 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds static int serio_raw_cleanup(struct serio_raw *serio_raw) 1151da177e4SLinus Torvalds { 1161da177e4SLinus Torvalds if (--serio_raw->refcnt == 0) { 1171da177e4SLinus Torvalds misc_deregister(&serio_raw->dev); 1181da177e4SLinus Torvalds list_del_init(&serio_raw->node); 1191da177e4SLinus Torvalds kfree(serio_raw); 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds return 1; 1221da177e4SLinus Torvalds } 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds return 0; 1251da177e4SLinus Torvalds } 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvalds static int serio_raw_release(struct inode *inode, struct file *file) 1281da177e4SLinus Torvalds { 1291da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 1301da177e4SLinus Torvalds struct serio_raw *serio_raw = list->serio_raw; 1311da177e4SLinus Torvalds 132c4e32e9fSArjan van de Ven mutex_lock(&serio_raw_mutex); 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds serio_raw_fasync(-1, file, 0); 1351da177e4SLinus Torvalds serio_raw_cleanup(serio_raw); 1361da177e4SLinus Torvalds 137c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 1381da177e4SLinus Torvalds return 0; 1391da177e4SLinus Torvalds } 1401da177e4SLinus Torvalds 1411da177e4SLinus Torvalds static int serio_raw_fetch_byte(struct serio_raw *serio_raw, char *c) 1421da177e4SLinus Torvalds { 1431da177e4SLinus Torvalds unsigned long flags; 1441da177e4SLinus Torvalds int empty; 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds spin_lock_irqsave(&serio_raw->serio->lock, flags); 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds empty = serio_raw->head == serio_raw->tail; 1491da177e4SLinus Torvalds if (!empty) { 1501da177e4SLinus Torvalds *c = serio_raw->queue[serio_raw->tail]; 1511da177e4SLinus Torvalds serio_raw->tail = (serio_raw->tail + 1) % SERIO_RAW_QUEUE_LEN; 1521da177e4SLinus Torvalds } 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvalds spin_unlock_irqrestore(&serio_raw->serio->lock, flags); 1551da177e4SLinus Torvalds 1561da177e4SLinus Torvalds return !empty; 1571da177e4SLinus Torvalds } 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds static ssize_t serio_raw_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) 1601da177e4SLinus Torvalds { 1611da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 1621da177e4SLinus Torvalds struct serio_raw *serio_raw = list->serio_raw; 1631da177e4SLinus Torvalds char c; 1641da177e4SLinus Torvalds ssize_t retval = 0; 1651da177e4SLinus Torvalds 1661da177e4SLinus Torvalds if (!serio_raw->serio) 1671da177e4SLinus Torvalds return -ENODEV; 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds if (serio_raw->head == serio_raw->tail && (file->f_flags & O_NONBLOCK)) 1701da177e4SLinus Torvalds return -EAGAIN; 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds retval = wait_event_interruptible(list->serio_raw->wait, 1731da177e4SLinus Torvalds serio_raw->head != serio_raw->tail || !serio_raw->serio); 1741da177e4SLinus Torvalds if (retval) 1751da177e4SLinus Torvalds return retval; 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds if (!serio_raw->serio) 1781da177e4SLinus Torvalds return -ENODEV; 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds while (retval < count && serio_raw_fetch_byte(serio_raw, &c)) { 1811da177e4SLinus Torvalds if (put_user(c, buffer++)) 1821da177e4SLinus Torvalds return -EFAULT; 1831da177e4SLinus Torvalds retval++; 1841da177e4SLinus Torvalds } 1851da177e4SLinus Torvalds 1861da177e4SLinus Torvalds return retval; 1871da177e4SLinus Torvalds } 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds static ssize_t serio_raw_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) 1901da177e4SLinus Torvalds { 1911da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 1921da177e4SLinus Torvalds ssize_t written = 0; 1931da177e4SLinus Torvalds int retval; 1941da177e4SLinus Torvalds unsigned char c; 1951da177e4SLinus Torvalds 196c4e32e9fSArjan van de Ven retval = mutex_lock_interruptible(&serio_raw_mutex); 1971da177e4SLinus Torvalds if (retval) 1981da177e4SLinus Torvalds return retval; 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds if (!list->serio_raw->serio) { 2011da177e4SLinus Torvalds retval = -ENODEV; 2021da177e4SLinus Torvalds goto out; 2031da177e4SLinus Torvalds } 2041da177e4SLinus Torvalds 2051da177e4SLinus Torvalds if (count > 32) 2061da177e4SLinus Torvalds count = 32; 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds while (count--) { 2091da177e4SLinus Torvalds if (get_user(c, buffer++)) { 2101da177e4SLinus Torvalds retval = -EFAULT; 2111da177e4SLinus Torvalds goto out; 2121da177e4SLinus Torvalds } 2131da177e4SLinus Torvalds if (serio_write(list->serio_raw->serio, c)) { 2141da177e4SLinus Torvalds retval = -EIO; 2151da177e4SLinus Torvalds goto out; 2161da177e4SLinus Torvalds } 2171da177e4SLinus Torvalds written++; 2181da177e4SLinus Torvalds }; 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds out: 221c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 2221da177e4SLinus Torvalds return written; 2231da177e4SLinus Torvalds } 2241da177e4SLinus Torvalds 2251da177e4SLinus Torvalds static unsigned int serio_raw_poll(struct file *file, poll_table *wait) 2261da177e4SLinus Torvalds { 2271da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds poll_wait(file, &list->serio_raw->wait, wait); 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds if (list->serio_raw->head != list->serio_raw->tail) 2321da177e4SLinus Torvalds return POLLIN | POLLRDNORM; 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds return 0; 2351da177e4SLinus Torvalds } 2361da177e4SLinus Torvalds 2372b8693c0SArjan van de Ven static const struct file_operations serio_raw_fops = { 2381da177e4SLinus Torvalds .owner = THIS_MODULE, 2391da177e4SLinus Torvalds .open = serio_raw_open, 2401da177e4SLinus Torvalds .release = serio_raw_release, 2411da177e4SLinus Torvalds .read = serio_raw_read, 2421da177e4SLinus Torvalds .write = serio_raw_write, 2431da177e4SLinus Torvalds .poll = serio_raw_poll, 2441da177e4SLinus Torvalds .fasync = serio_raw_fasync, 2451da177e4SLinus Torvalds }; 2461da177e4SLinus Torvalds 2471da177e4SLinus Torvalds 2481da177e4SLinus Torvalds /********************************************************************* 2491da177e4SLinus Torvalds * Interface with serio port * 2501da177e4SLinus Torvalds *********************************************************************/ 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds static irqreturn_t serio_raw_interrupt(struct serio *serio, unsigned char data, 2537d12e780SDavid Howells unsigned int dfl) 2541da177e4SLinus Torvalds { 2551da177e4SLinus Torvalds struct serio_raw *serio_raw = serio_get_drvdata(serio); 2561da177e4SLinus Torvalds struct serio_raw_list *list; 2571da177e4SLinus Torvalds unsigned int head = serio_raw->head; 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds /* we are holding serio->lock here so we are prootected */ 2601da177e4SLinus Torvalds serio_raw->queue[head] = data; 2611da177e4SLinus Torvalds head = (head + 1) % SERIO_RAW_QUEUE_LEN; 2621da177e4SLinus Torvalds if (likely(head != serio_raw->tail)) { 2631da177e4SLinus Torvalds serio_raw->head = head; 2641da177e4SLinus Torvalds list_for_each_entry(list, &serio_raw->list, node) 2651da177e4SLinus Torvalds kill_fasync(&list->fasync, SIGIO, POLL_IN); 2661da177e4SLinus Torvalds wake_up_interruptible(&serio_raw->wait); 2671da177e4SLinus Torvalds } 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds return IRQ_HANDLED; 2701da177e4SLinus Torvalds } 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds static int serio_raw_connect(struct serio *serio, struct serio_driver *drv) 2731da177e4SLinus Torvalds { 2741da177e4SLinus Torvalds struct serio_raw *serio_raw; 2751da177e4SLinus Torvalds int err; 2761da177e4SLinus Torvalds 277b39787a9SEric Sesterhenn if (!(serio_raw = kzalloc(sizeof(struct serio_raw), GFP_KERNEL))) { 2781da177e4SLinus Torvalds printk(KERN_ERR "serio_raw.c: can't allocate memory for a device\n"); 2791da177e4SLinus Torvalds return -ENOMEM; 2801da177e4SLinus Torvalds } 2811da177e4SLinus Torvalds 282c4e32e9fSArjan van de Ven mutex_lock(&serio_raw_mutex); 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds snprintf(serio_raw->name, sizeof(serio_raw->name), "serio_raw%d", serio_raw_no++); 2851da177e4SLinus Torvalds serio_raw->refcnt = 1; 2861da177e4SLinus Torvalds serio_raw->serio = serio; 2871da177e4SLinus Torvalds INIT_LIST_HEAD(&serio_raw->list); 2881da177e4SLinus Torvalds init_waitqueue_head(&serio_raw->wait); 2891da177e4SLinus Torvalds 2901da177e4SLinus Torvalds serio_set_drvdata(serio, serio_raw); 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds err = serio_open(serio, drv); 2931da177e4SLinus Torvalds if (err) 2941da177e4SLinus Torvalds goto out_free; 2951da177e4SLinus Torvalds 2961da177e4SLinus Torvalds list_add_tail(&serio_raw->node, &serio_raw_list); 2971da177e4SLinus Torvalds 2981da177e4SLinus Torvalds serio_raw->dev.minor = PSMOUSE_MINOR; 2991da177e4SLinus Torvalds serio_raw->dev.name = serio_raw->name; 30094fbcdedSGreg Kroah-Hartman serio_raw->dev.parent = &serio->dev; 3011da177e4SLinus Torvalds serio_raw->dev.fops = &serio_raw_fops; 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds err = misc_register(&serio_raw->dev); 3041da177e4SLinus Torvalds if (err) { 3051da177e4SLinus Torvalds serio_raw->dev.minor = MISC_DYNAMIC_MINOR; 3061da177e4SLinus Torvalds err = misc_register(&serio_raw->dev); 3071da177e4SLinus Torvalds } 3081da177e4SLinus Torvalds 3091da177e4SLinus Torvalds if (err) { 3101da177e4SLinus Torvalds printk(KERN_INFO "serio_raw: failed to register raw access device for %s\n", 3111da177e4SLinus Torvalds serio->phys); 3121da177e4SLinus Torvalds goto out_close; 3131da177e4SLinus Torvalds } 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds printk(KERN_INFO "serio_raw: raw access enabled on %s (%s, minor %d)\n", 3161da177e4SLinus Torvalds serio->phys, serio_raw->name, serio_raw->dev.minor); 3171da177e4SLinus Torvalds goto out; 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds out_close: 3201da177e4SLinus Torvalds serio_close(serio); 3211da177e4SLinus Torvalds list_del_init(&serio_raw->node); 3221da177e4SLinus Torvalds out_free: 3231da177e4SLinus Torvalds serio_set_drvdata(serio, NULL); 3241da177e4SLinus Torvalds kfree(serio_raw); 3251da177e4SLinus Torvalds out: 326c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 3271da177e4SLinus Torvalds return err; 3281da177e4SLinus Torvalds } 3291da177e4SLinus Torvalds 3301da177e4SLinus Torvalds static int serio_raw_reconnect(struct serio *serio) 3311da177e4SLinus Torvalds { 3321da177e4SLinus Torvalds struct serio_raw *serio_raw = serio_get_drvdata(serio); 3331da177e4SLinus Torvalds struct serio_driver *drv = serio->drv; 3341da177e4SLinus Torvalds 3351da177e4SLinus Torvalds if (!drv || !serio_raw) { 3361da177e4SLinus Torvalds printk(KERN_DEBUG "serio_raw: reconnect request, but serio is disconnected, ignoring...\n"); 3371da177e4SLinus Torvalds return -1; 3381da177e4SLinus Torvalds } 3391da177e4SLinus Torvalds 3401da177e4SLinus Torvalds /* 3411da177e4SLinus Torvalds * Nothing needs to be done here, we just need this method to 3421da177e4SLinus Torvalds * keep the same device. 3431da177e4SLinus Torvalds */ 3441da177e4SLinus Torvalds return 0; 3451da177e4SLinus Torvalds } 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds static void serio_raw_disconnect(struct serio *serio) 3481da177e4SLinus Torvalds { 3491da177e4SLinus Torvalds struct serio_raw *serio_raw; 3501da177e4SLinus Torvalds 351c4e32e9fSArjan van de Ven mutex_lock(&serio_raw_mutex); 3521da177e4SLinus Torvalds 3531da177e4SLinus Torvalds serio_raw = serio_get_drvdata(serio); 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds serio_close(serio); 3561da177e4SLinus Torvalds serio_set_drvdata(serio, NULL); 3571da177e4SLinus Torvalds 3581da177e4SLinus Torvalds serio_raw->serio = NULL; 3591da177e4SLinus Torvalds if (!serio_raw_cleanup(serio_raw)) 3601da177e4SLinus Torvalds wake_up_interruptible(&serio_raw->wait); 3611da177e4SLinus Torvalds 362c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 3631da177e4SLinus Torvalds } 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds static struct serio_device_id serio_raw_serio_ids[] = { 3661da177e4SLinus Torvalds { 3671da177e4SLinus Torvalds .type = SERIO_8042, 3681da177e4SLinus Torvalds .proto = SERIO_ANY, 3691da177e4SLinus Torvalds .id = SERIO_ANY, 3701da177e4SLinus Torvalds .extra = SERIO_ANY, 3711da177e4SLinus Torvalds }, 3721da177e4SLinus Torvalds { 0 } 3731da177e4SLinus Torvalds }; 3741da177e4SLinus Torvalds 3751da177e4SLinus Torvalds MODULE_DEVICE_TABLE(serio, serio_raw_serio_ids); 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvalds static struct serio_driver serio_raw_drv = { 3781da177e4SLinus Torvalds .driver = { 3791da177e4SLinus Torvalds .name = "serio_raw", 3801da177e4SLinus Torvalds }, 3811da177e4SLinus Torvalds .description = DRIVER_DESC, 3821da177e4SLinus Torvalds .id_table = serio_raw_serio_ids, 3831da177e4SLinus Torvalds .interrupt = serio_raw_interrupt, 3841da177e4SLinus Torvalds .connect = serio_raw_connect, 3851da177e4SLinus Torvalds .reconnect = serio_raw_reconnect, 3861da177e4SLinus Torvalds .disconnect = serio_raw_disconnect, 3871da177e4SLinus Torvalds .manual_bind = 1, 3881da177e4SLinus Torvalds }; 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds static int __init serio_raw_init(void) 3911da177e4SLinus Torvalds { 392153a9df0SAkinobu Mita return serio_register_driver(&serio_raw_drv); 3931da177e4SLinus Torvalds } 3941da177e4SLinus Torvalds 3951da177e4SLinus Torvalds static void __exit serio_raw_exit(void) 3961da177e4SLinus Torvalds { 3971da177e4SLinus Torvalds serio_unregister_driver(&serio_raw_drv); 3981da177e4SLinus Torvalds } 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds module_init(serio_raw_init); 4011da177e4SLinus Torvalds module_exit(serio_raw_exit); 402