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 12ba538cd2SDmitry Torokhov #include <linux/kref.h> 13d43c36dcSAlexey Dobriyan #include <linux/sched.h> 141da177e4SLinus Torvalds #include <linux/slab.h> 151da177e4SLinus Torvalds #include <linux/poll.h> 161da177e4SLinus Torvalds #include <linux/module.h> 171da177e4SLinus Torvalds #include <linux/serio.h> 181da177e4SLinus Torvalds #include <linux/init.h> 191da177e4SLinus Torvalds #include <linux/major.h> 201da177e4SLinus Torvalds #include <linux/device.h> 211da177e4SLinus Torvalds #include <linux/miscdevice.h> 221da177e4SLinus Torvalds #include <linux/wait.h> 23c4e32e9fSArjan van de Ven #include <linux/mutex.h> 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds #define DRIVER_DESC "Raw serio driver" 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>"); 281da177e4SLinus Torvalds MODULE_DESCRIPTION(DRIVER_DESC); 291da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds #define SERIO_RAW_QUEUE_LEN 64 321da177e4SLinus Torvalds struct serio_raw { 331da177e4SLinus Torvalds unsigned char queue[SERIO_RAW_QUEUE_LEN]; 341da177e4SLinus Torvalds unsigned int tail, head; 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds char name[16]; 37ba538cd2SDmitry Torokhov struct kref kref; 381da177e4SLinus Torvalds struct serio *serio; 391da177e4SLinus Torvalds struct miscdevice dev; 401da177e4SLinus Torvalds wait_queue_head_t wait; 411da177e4SLinus Torvalds struct list_head list; 421da177e4SLinus Torvalds struct list_head node; 431da177e4SLinus Torvalds }; 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds struct serio_raw_list { 461da177e4SLinus Torvalds struct fasync_struct *fasync; 471da177e4SLinus Torvalds struct serio_raw *serio_raw; 481da177e4SLinus Torvalds struct list_head node; 491da177e4SLinus Torvalds }; 501da177e4SLinus Torvalds 51c4e32e9fSArjan van de Ven static DEFINE_MUTEX(serio_raw_mutex); 521da177e4SLinus Torvalds static LIST_HEAD(serio_raw_list); 531da177e4SLinus Torvalds static unsigned int serio_raw_no; 541da177e4SLinus Torvalds 551da177e4SLinus Torvalds /********************************************************************* 561da177e4SLinus Torvalds * Interface with userspace (file operations) * 571da177e4SLinus Torvalds *********************************************************************/ 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds static int serio_raw_fasync(int fd, struct file *file, int on) 601da177e4SLinus Torvalds { 611da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 621da177e4SLinus Torvalds 6360aa4924SJonathan Corbet return fasync_helper(fd, file, on, &list->fasync); 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) 8677554b4dSThadeu Lima de Souza Cascardo return retval; 871da177e4SLinus Torvalds 8877554b4dSThadeu Lima de Souza Cascardo serio_raw = serio_raw_locate(iminor(inode)); 8977554b4dSThadeu Lima de Souza Cascardo if (!serio_raw) { 901da177e4SLinus Torvalds retval = -ENODEV; 911da177e4SLinus Torvalds goto out; 921da177e4SLinus Torvalds } 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds if (!serio_raw->serio) { 951da177e4SLinus Torvalds retval = -ENODEV; 961da177e4SLinus Torvalds goto out; 971da177e4SLinus Torvalds } 981da177e4SLinus Torvalds 9977554b4dSThadeu Lima de Souza Cascardo list = kzalloc(sizeof(struct serio_raw_list), GFP_KERNEL); 10077554b4dSThadeu Lima de Souza Cascardo if (!list) { 1011da177e4SLinus Torvalds retval = -ENOMEM; 1021da177e4SLinus Torvalds goto out; 1031da177e4SLinus Torvalds } 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds list->serio_raw = serio_raw; 1061da177e4SLinus Torvalds file->private_data = list; 1071da177e4SLinus Torvalds 108ba538cd2SDmitry Torokhov kref_get(&serio_raw->kref); 1091da177e4SLinus Torvalds list_add_tail(&list->node, &serio_raw->list); 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds out: 112c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 1131da177e4SLinus Torvalds return retval; 1141da177e4SLinus Torvalds } 1151da177e4SLinus Torvalds 116ba538cd2SDmitry Torokhov static void serio_raw_cleanup(struct kref *kref) 1171da177e4SLinus Torvalds { 118ba538cd2SDmitry Torokhov struct serio_raw *serio_raw = 119ba538cd2SDmitry Torokhov container_of(kref, struct serio_raw, kref); 120ba538cd2SDmitry Torokhov 1211da177e4SLinus Torvalds misc_deregister(&serio_raw->dev); 1221da177e4SLinus Torvalds list_del_init(&serio_raw->node); 1231da177e4SLinus Torvalds kfree(serio_raw); 1241da177e4SLinus Torvalds } 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds static int serio_raw_release(struct inode *inode, struct file *file) 1271da177e4SLinus Torvalds { 1281da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 1291da177e4SLinus Torvalds struct serio_raw *serio_raw = list->serio_raw; 1301da177e4SLinus Torvalds 131c4e32e9fSArjan van de Ven mutex_lock(&serio_raw_mutex); 1321da177e4SLinus Torvalds 133ba538cd2SDmitry Torokhov kref_put(&serio_raw->kref, serio_raw_cleanup); 1341da177e4SLinus Torvalds 135c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 1361da177e4SLinus Torvalds return 0; 1371da177e4SLinus Torvalds } 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds static int serio_raw_fetch_byte(struct serio_raw *serio_raw, char *c) 1401da177e4SLinus Torvalds { 1411da177e4SLinus Torvalds unsigned long flags; 1421da177e4SLinus Torvalds int empty; 1431da177e4SLinus Torvalds 1441da177e4SLinus Torvalds spin_lock_irqsave(&serio_raw->serio->lock, flags); 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds empty = serio_raw->head == serio_raw->tail; 1471da177e4SLinus Torvalds if (!empty) { 1481da177e4SLinus Torvalds *c = serio_raw->queue[serio_raw->tail]; 1491da177e4SLinus Torvalds serio_raw->tail = (serio_raw->tail + 1) % SERIO_RAW_QUEUE_LEN; 1501da177e4SLinus Torvalds } 1511da177e4SLinus Torvalds 1521da177e4SLinus Torvalds spin_unlock_irqrestore(&serio_raw->serio->lock, flags); 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvalds return !empty; 1551da177e4SLinus Torvalds } 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvalds static ssize_t serio_raw_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) 1581da177e4SLinus Torvalds { 1591da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 1601da177e4SLinus Torvalds struct serio_raw *serio_raw = list->serio_raw; 1614f179f71SAndrew Morton char uninitialized_var(c); 1621da177e4SLinus Torvalds ssize_t retval = 0; 1631da177e4SLinus Torvalds 1641da177e4SLinus Torvalds if (!serio_raw->serio) 1651da177e4SLinus Torvalds return -ENODEV; 1661da177e4SLinus Torvalds 1671da177e4SLinus Torvalds if (serio_raw->head == serio_raw->tail && (file->f_flags & O_NONBLOCK)) 1681da177e4SLinus Torvalds return -EAGAIN; 1691da177e4SLinus Torvalds 1701da177e4SLinus Torvalds retval = wait_event_interruptible(list->serio_raw->wait, 1711da177e4SLinus Torvalds serio_raw->head != serio_raw->tail || !serio_raw->serio); 1721da177e4SLinus Torvalds if (retval) 1731da177e4SLinus Torvalds return retval; 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds if (!serio_raw->serio) 1761da177e4SLinus Torvalds return -ENODEV; 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds while (retval < count && serio_raw_fetch_byte(serio_raw, &c)) { 1791da177e4SLinus Torvalds if (put_user(c, buffer++)) 1801da177e4SLinus Torvalds return -EFAULT; 1811da177e4SLinus Torvalds retval++; 1821da177e4SLinus Torvalds } 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds return retval; 1851da177e4SLinus Torvalds } 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds static ssize_t serio_raw_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos) 1881da177e4SLinus Torvalds { 1891da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 1901da177e4SLinus Torvalds ssize_t written = 0; 1911da177e4SLinus Torvalds int retval; 1921da177e4SLinus Torvalds unsigned char c; 1931da177e4SLinus Torvalds 194c4e32e9fSArjan van de Ven retval = mutex_lock_interruptible(&serio_raw_mutex); 1951da177e4SLinus Torvalds if (retval) 1961da177e4SLinus Torvalds return retval; 1971da177e4SLinus Torvalds 1981da177e4SLinus Torvalds if (!list->serio_raw->serio) { 1991da177e4SLinus Torvalds retval = -ENODEV; 2001da177e4SLinus Torvalds goto out; 2011da177e4SLinus Torvalds } 2021da177e4SLinus Torvalds 2031da177e4SLinus Torvalds if (count > 32) 2041da177e4SLinus Torvalds count = 32; 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds while (count--) { 2071da177e4SLinus Torvalds if (get_user(c, buffer++)) { 2081da177e4SLinus Torvalds retval = -EFAULT; 2091da177e4SLinus Torvalds goto out; 2101da177e4SLinus Torvalds } 2111da177e4SLinus Torvalds if (serio_write(list->serio_raw->serio, c)) { 2121da177e4SLinus Torvalds retval = -EIO; 2131da177e4SLinus Torvalds goto out; 2141da177e4SLinus Torvalds } 2151da177e4SLinus Torvalds written++; 2161da177e4SLinus Torvalds }; 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds out: 219c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 2201da177e4SLinus Torvalds return written; 2211da177e4SLinus Torvalds } 2221da177e4SLinus Torvalds 2231da177e4SLinus Torvalds static unsigned int serio_raw_poll(struct file *file, poll_table *wait) 2241da177e4SLinus Torvalds { 2251da177e4SLinus Torvalds struct serio_raw_list *list = file->private_data; 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds poll_wait(file, &list->serio_raw->wait, wait); 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds if (list->serio_raw->head != list->serio_raw->tail) 2301da177e4SLinus Torvalds return POLLIN | POLLRDNORM; 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds return 0; 2331da177e4SLinus Torvalds } 2341da177e4SLinus Torvalds 2352b8693c0SArjan van de Ven static const struct file_operations serio_raw_fops = { 2361da177e4SLinus Torvalds .owner = THIS_MODULE, 2371da177e4SLinus Torvalds .open = serio_raw_open, 2381da177e4SLinus Torvalds .release = serio_raw_release, 2391da177e4SLinus Torvalds .read = serio_raw_read, 2401da177e4SLinus Torvalds .write = serio_raw_write, 2411da177e4SLinus Torvalds .poll = serio_raw_poll, 2421da177e4SLinus Torvalds .fasync = serio_raw_fasync, 2436038f373SArnd Bergmann .llseek = noop_llseek, 2441da177e4SLinus Torvalds }; 2451da177e4SLinus Torvalds 2461da177e4SLinus Torvalds 2471da177e4SLinus Torvalds /********************************************************************* 2481da177e4SLinus Torvalds * Interface with serio port * 2491da177e4SLinus Torvalds *********************************************************************/ 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds static irqreturn_t serio_raw_interrupt(struct serio *serio, unsigned char data, 2527d12e780SDavid Howells unsigned int dfl) 2531da177e4SLinus Torvalds { 2541da177e4SLinus Torvalds struct serio_raw *serio_raw = serio_get_drvdata(serio); 2551da177e4SLinus Torvalds struct serio_raw_list *list; 2561da177e4SLinus Torvalds unsigned int head = serio_raw->head; 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds /* we are holding serio->lock here so we are prootected */ 2591da177e4SLinus Torvalds serio_raw->queue[head] = data; 2601da177e4SLinus Torvalds head = (head + 1) % SERIO_RAW_QUEUE_LEN; 2611da177e4SLinus Torvalds if (likely(head != serio_raw->tail)) { 2621da177e4SLinus Torvalds serio_raw->head = head; 2631da177e4SLinus Torvalds list_for_each_entry(list, &serio_raw->list, node) 2641da177e4SLinus Torvalds kill_fasync(&list->fasync, SIGIO, POLL_IN); 2651da177e4SLinus Torvalds wake_up_interruptible(&serio_raw->wait); 2661da177e4SLinus Torvalds } 2671da177e4SLinus Torvalds 2681da177e4SLinus Torvalds return IRQ_HANDLED; 2691da177e4SLinus Torvalds } 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds static int serio_raw_connect(struct serio *serio, struct serio_driver *drv) 2721da177e4SLinus Torvalds { 2731da177e4SLinus Torvalds struct serio_raw *serio_raw; 2741da177e4SLinus Torvalds int err; 2751da177e4SLinus Torvalds 276b39787a9SEric Sesterhenn if (!(serio_raw = kzalloc(sizeof(struct serio_raw), GFP_KERNEL))) { 2771da177e4SLinus Torvalds printk(KERN_ERR "serio_raw.c: can't allocate memory for a device\n"); 2781da177e4SLinus Torvalds return -ENOMEM; 2791da177e4SLinus Torvalds } 2801da177e4SLinus Torvalds 281c4e32e9fSArjan van de Ven mutex_lock(&serio_raw_mutex); 2821da177e4SLinus Torvalds 2831da177e4SLinus Torvalds snprintf(serio_raw->name, sizeof(serio_raw->name), "serio_raw%d", serio_raw_no++); 284ba538cd2SDmitry Torokhov kref_init(&serio_raw->kref); 2851da177e4SLinus Torvalds serio_raw->serio = serio; 2861da177e4SLinus Torvalds INIT_LIST_HEAD(&serio_raw->list); 2871da177e4SLinus Torvalds init_waitqueue_head(&serio_raw->wait); 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvalds serio_set_drvdata(serio, serio_raw); 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvalds err = serio_open(serio, drv); 2921da177e4SLinus Torvalds if (err) 2931da177e4SLinus Torvalds goto out_free; 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds list_add_tail(&serio_raw->node, &serio_raw_list); 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds serio_raw->dev.minor = PSMOUSE_MINOR; 2981da177e4SLinus Torvalds serio_raw->dev.name = serio_raw->name; 29994fbcdedSGreg Kroah-Hartman serio_raw->dev.parent = &serio->dev; 3001da177e4SLinus Torvalds serio_raw->dev.fops = &serio_raw_fops; 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds err = misc_register(&serio_raw->dev); 3031da177e4SLinus Torvalds if (err) { 3041da177e4SLinus Torvalds serio_raw->dev.minor = MISC_DYNAMIC_MINOR; 3051da177e4SLinus Torvalds err = misc_register(&serio_raw->dev); 3061da177e4SLinus Torvalds } 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds if (err) { 3091da177e4SLinus Torvalds printk(KERN_INFO "serio_raw: failed to register raw access device for %s\n", 3101da177e4SLinus Torvalds serio->phys); 3111da177e4SLinus Torvalds goto out_close; 3121da177e4SLinus Torvalds } 3131da177e4SLinus Torvalds 3141da177e4SLinus Torvalds printk(KERN_INFO "serio_raw: raw access enabled on %s (%s, minor %d)\n", 3151da177e4SLinus Torvalds serio->phys, serio_raw->name, serio_raw->dev.minor); 3161da177e4SLinus Torvalds goto out; 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds out_close: 3191da177e4SLinus Torvalds serio_close(serio); 3201da177e4SLinus Torvalds list_del_init(&serio_raw->node); 3211da177e4SLinus Torvalds out_free: 3221da177e4SLinus Torvalds serio_set_drvdata(serio, NULL); 3231da177e4SLinus Torvalds kfree(serio_raw); 3241da177e4SLinus Torvalds out: 325c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 3261da177e4SLinus Torvalds return err; 3271da177e4SLinus Torvalds } 3281da177e4SLinus Torvalds 3291da177e4SLinus Torvalds static int serio_raw_reconnect(struct serio *serio) 3301da177e4SLinus Torvalds { 3311da177e4SLinus Torvalds struct serio_raw *serio_raw = serio_get_drvdata(serio); 3321da177e4SLinus Torvalds struct serio_driver *drv = serio->drv; 3331da177e4SLinus Torvalds 3341da177e4SLinus Torvalds if (!drv || !serio_raw) { 3351da177e4SLinus Torvalds printk(KERN_DEBUG "serio_raw: reconnect request, but serio is disconnected, ignoring...\n"); 3361da177e4SLinus Torvalds return -1; 3371da177e4SLinus Torvalds } 3381da177e4SLinus Torvalds 3391da177e4SLinus Torvalds /* 3401da177e4SLinus Torvalds * Nothing needs to be done here, we just need this method to 3411da177e4SLinus Torvalds * keep the same device. 3421da177e4SLinus Torvalds */ 3431da177e4SLinus Torvalds return 0; 3441da177e4SLinus Torvalds } 3451da177e4SLinus Torvalds 3461da177e4SLinus Torvalds static void serio_raw_disconnect(struct serio *serio) 3471da177e4SLinus Torvalds { 3481da177e4SLinus Torvalds struct serio_raw *serio_raw; 3491da177e4SLinus Torvalds 350c4e32e9fSArjan van de Ven mutex_lock(&serio_raw_mutex); 3511da177e4SLinus Torvalds 3521da177e4SLinus Torvalds serio_raw = serio_get_drvdata(serio); 3531da177e4SLinus Torvalds 3541da177e4SLinus Torvalds serio_close(serio); 3551da177e4SLinus Torvalds serio_set_drvdata(serio, NULL); 3561da177e4SLinus Torvalds 3571da177e4SLinus Torvalds serio_raw->serio = NULL; 3581da177e4SLinus Torvalds wake_up_interruptible(&serio_raw->wait); 359ba538cd2SDmitry Torokhov kref_put(&serio_raw->kref, serio_raw_cleanup); 3601da177e4SLinus Torvalds 361c4e32e9fSArjan van de Ven mutex_unlock(&serio_raw_mutex); 3621da177e4SLinus Torvalds } 3631da177e4SLinus Torvalds 3641da177e4SLinus Torvalds static struct serio_device_id serio_raw_serio_ids[] = { 3651da177e4SLinus Torvalds { 3661da177e4SLinus Torvalds .type = SERIO_8042, 3671da177e4SLinus Torvalds .proto = SERIO_ANY, 3681da177e4SLinus Torvalds .id = SERIO_ANY, 3691da177e4SLinus Torvalds .extra = SERIO_ANY, 3701da177e4SLinus Torvalds }, 371d19497e2SNiels de Vos { 372d19497e2SNiels de Vos .type = SERIO_8042_XL, 373d19497e2SNiels de Vos .proto = SERIO_ANY, 374d19497e2SNiels de Vos .id = SERIO_ANY, 375d19497e2SNiels de Vos .extra = SERIO_ANY, 376d19497e2SNiels de Vos }, 3771da177e4SLinus Torvalds { 0 } 3781da177e4SLinus Torvalds }; 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds MODULE_DEVICE_TABLE(serio, serio_raw_serio_ids); 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds static struct serio_driver serio_raw_drv = { 3831da177e4SLinus Torvalds .driver = { 3841da177e4SLinus Torvalds .name = "serio_raw", 3851da177e4SLinus Torvalds }, 3861da177e4SLinus Torvalds .description = DRIVER_DESC, 3871da177e4SLinus Torvalds .id_table = serio_raw_serio_ids, 3881da177e4SLinus Torvalds .interrupt = serio_raw_interrupt, 3891da177e4SLinus Torvalds .connect = serio_raw_connect, 3901da177e4SLinus Torvalds .reconnect = serio_raw_reconnect, 3911da177e4SLinus Torvalds .disconnect = serio_raw_disconnect, 3921da177e4SLinus Torvalds .manual_bind = 1, 3931da177e4SLinus Torvalds }; 3941da177e4SLinus Torvalds 3951da177e4SLinus Torvalds static int __init serio_raw_init(void) 3961da177e4SLinus Torvalds { 397153a9df0SAkinobu Mita return serio_register_driver(&serio_raw_drv); 3981da177e4SLinus Torvalds } 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds static void __exit serio_raw_exit(void) 4011da177e4SLinus Torvalds { 4021da177e4SLinus Torvalds serio_unregister_driver(&serio_raw_drv); 4031da177e4SLinus Torvalds } 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvalds module_init(serio_raw_init); 4061da177e4SLinus Torvalds module_exit(serio_raw_exit); 407