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v3.1
 
  1/*
  2 * Raw serio device providing access to a raw byte stream from underlying
  3 * serio port. Closely emulates behavior of pre-2.6 /dev/psaux device
  4 *
  5 * Copyright (c) 2004 Dmitry Torokhov
  6 *
  7 * This program is free software; you can redistribute it and/or modify it
  8 * under the terms of the GNU General Public License version 2 as published by
  9 * the Free Software Foundation.
 10 */
 11
 
 12#include <linux/sched.h>
 13#include <linux/slab.h>
 14#include <linux/poll.h>
 15#include <linux/module.h>
 16#include <linux/serio.h>
 17#include <linux/init.h>
 18#include <linux/major.h>
 19#include <linux/device.h>
 20#include <linux/miscdevice.h>
 21#include <linux/wait.h>
 22#include <linux/mutex.h>
 23
 24#define DRIVER_DESC	"Raw serio driver"
 25
 26MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>");
 27MODULE_DESCRIPTION(DRIVER_DESC);
 28MODULE_LICENSE("GPL");
 29
 30#define SERIO_RAW_QUEUE_LEN	64
 31struct serio_raw {
 32	unsigned char queue[SERIO_RAW_QUEUE_LEN];
 33	unsigned int tail, head;
 34
 35	char name[16];
 36	unsigned int refcnt;
 37	struct serio *serio;
 38	struct miscdevice dev;
 39	wait_queue_head_t wait;
 40	struct list_head list;
 41	struct list_head node;
 
 42};
 43
 44struct serio_raw_list {
 45	struct fasync_struct *fasync;
 46	struct serio_raw *serio_raw;
 47	struct list_head node;
 48};
 49
 50static DEFINE_MUTEX(serio_raw_mutex);
 51static LIST_HEAD(serio_raw_list);
 52static unsigned int serio_raw_no;
 53
 54/*********************************************************************
 55 *             Interface with userspace (file operations)            *
 56 *********************************************************************/
 57
 58static int serio_raw_fasync(int fd, struct file *file, int on)
 59{
 60	struct serio_raw_list *list = file->private_data;
 61
 62	return fasync_helper(fd, file, on, &list->fasync);
 63}
 64
 65static struct serio_raw *serio_raw_locate(int minor)
 66{
 67	struct serio_raw *serio_raw;
 68
 69	list_for_each_entry(serio_raw, &serio_raw_list, node) {
 70		if (serio_raw->dev.minor == minor)
 71			return serio_raw;
 72	}
 73
 74	return NULL;
 75}
 76
 77static int serio_raw_open(struct inode *inode, struct file *file)
 78{
 79	struct serio_raw *serio_raw;
 80	struct serio_raw_list *list;
 81	int retval = 0;
 82
 83	retval = mutex_lock_interruptible(&serio_raw_mutex);
 84	if (retval)
 85		return retval;
 86
 87	serio_raw = serio_raw_locate(iminor(inode));
 88	if (!serio_raw) {
 89		retval = -ENODEV;
 90		goto out;
 91	}
 92
 93	if (!serio_raw->serio) {
 94		retval = -ENODEV;
 95		goto out;
 96	}
 97
 98	list = kzalloc(sizeof(struct serio_raw_list), GFP_KERNEL);
 99	if (!list) {
100		retval = -ENOMEM;
101		goto out;
102	}
103
104	list->serio_raw = serio_raw;
105	file->private_data = list;
106
107	serio_raw->refcnt++;
108	list_add_tail(&list->node, &serio_raw->list);
 
 
 
109
110out:
111	mutex_unlock(&serio_raw_mutex);
112	return retval;
113}
114
115static int serio_raw_cleanup(struct serio_raw *serio_raw)
116{
117	if (--serio_raw->refcnt == 0) {
118		misc_deregister(&serio_raw->dev);
119		list_del_init(&serio_raw->node);
120		kfree(serio_raw);
121
122		return 1;
123	}
124
125	return 0;
126}
127
128static int serio_raw_release(struct inode *inode, struct file *file)
129{
130	struct serio_raw_list *list = file->private_data;
131	struct serio_raw *serio_raw = list->serio_raw;
132
133	mutex_lock(&serio_raw_mutex);
 
 
134
135	serio_raw_cleanup(serio_raw);
 
 
136
137	mutex_unlock(&serio_raw_mutex);
138	return 0;
139}
140
141static int serio_raw_fetch_byte(struct serio_raw *serio_raw, char *c)
142{
143	unsigned long flags;
144	int empty;
145
146	spin_lock_irqsave(&serio_raw->serio->lock, flags);
147
148	empty = serio_raw->head == serio_raw->tail;
149	if (!empty) {
150		*c = serio_raw->queue[serio_raw->tail];
151		serio_raw->tail = (serio_raw->tail + 1) % SERIO_RAW_QUEUE_LEN;
152	}
153
154	spin_unlock_irqrestore(&serio_raw->serio->lock, flags);
155
156	return !empty;
157}
158
159static ssize_t serio_raw_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
 
160{
161	struct serio_raw_list *list = file->private_data;
162	struct serio_raw *serio_raw = list->serio_raw;
163	char uninitialized_var(c);
164	ssize_t retval = 0;
165
166	if (!serio_raw->serio)
167		return -ENODEV;
168
169	if (serio_raw->head == serio_raw->tail && (file->f_flags & O_NONBLOCK))
170		return -EAGAIN;
171
172	retval = wait_event_interruptible(list->serio_raw->wait,
173					  serio_raw->head != serio_raw->tail || !serio_raw->serio);
174	if (retval)
175		return retval;
 
 
 
 
 
 
 
176
177	if (!serio_raw->serio)
178		return -ENODEV;
179
180	while (retval < count && serio_raw_fetch_byte(serio_raw, &c)) {
181		if (put_user(c, buffer++))
182			return -EFAULT;
183		retval++;
 
 
 
184	}
185
186	return retval;
187}
188
189static ssize_t serio_raw_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
 
190{
191	struct serio_raw_list *list = file->private_data;
192	ssize_t written = 0;
193	int retval;
194	unsigned char c;
195
196	retval = mutex_lock_interruptible(&serio_raw_mutex);
197	if (retval)
198		return retval;
199
200	if (!list->serio_raw->serio) {
201		retval = -ENODEV;
202		goto out;
203	}
204
205	if (count > 32)
206		count = 32;
207
208	while (count--) {
209		if (get_user(c, buffer++)) {
210			retval = -EFAULT;
211			goto out;
212		}
213		if (serio_write(list->serio_raw->serio, c)) {
214			retval = -EIO;
 
 
 
215			goto out;
216		}
217		written++;
218	};
 
219
220out:
221	mutex_unlock(&serio_raw_mutex);
222	return written;
223}
224
225static unsigned int serio_raw_poll(struct file *file, poll_table *wait)
226{
227	struct serio_raw_list *list = file->private_data;
 
 
228
229	poll_wait(file, &list->serio_raw->wait, wait);
230
231	if (list->serio_raw->head != list->serio_raw->tail)
232		return POLLIN | POLLRDNORM;
 
233
234	return 0;
235}
236
237static const struct file_operations serio_raw_fops = {
238	.owner =	THIS_MODULE,
239	.open =		serio_raw_open,
240	.release =	serio_raw_release,
241	.read =		serio_raw_read,
242	.write =	serio_raw_write,
243	.poll =		serio_raw_poll,
244	.fasync =	serio_raw_fasync,
245	.llseek = noop_llseek,
246};
247
248
249/*********************************************************************
250 *                   Interface with serio port   	             *
251 *********************************************************************/
252
253static irqreturn_t serio_raw_interrupt(struct serio *serio, unsigned char data,
254					unsigned int dfl)
255{
256	struct serio_raw *serio_raw = serio_get_drvdata(serio);
257	struct serio_raw_list *list;
258	unsigned int head = serio_raw->head;
259
260	/* we are holding serio->lock here so we are prootected */
261	serio_raw->queue[head] = data;
262	head = (head + 1) % SERIO_RAW_QUEUE_LEN;
263	if (likely(head != serio_raw->tail)) {
264		serio_raw->head = head;
265		list_for_each_entry(list, &serio_raw->list, node)
266			kill_fasync(&list->fasync, SIGIO, POLL_IN);
267		wake_up_interruptible(&serio_raw->wait);
268	}
269
270	return IRQ_HANDLED;
271}
272
273static int serio_raw_connect(struct serio *serio, struct serio_driver *drv)
274{
 
275	struct serio_raw *serio_raw;
276	int err;
277
278	if (!(serio_raw = kzalloc(sizeof(struct serio_raw), GFP_KERNEL))) {
279		printk(KERN_ERR "serio_raw.c: can't allocate memory for a device\n");
 
280		return -ENOMEM;
281	}
282
283	mutex_lock(&serio_raw_mutex);
 
 
 
 
284
285	snprintf(serio_raw->name, sizeof(serio_raw->name), "serio_raw%d", serio_raw_no++);
286	serio_raw->refcnt = 1;
287	serio_raw->serio = serio;
288	INIT_LIST_HEAD(&serio_raw->list);
289	init_waitqueue_head(&serio_raw->wait);
290
291	serio_set_drvdata(serio, serio_raw);
292
293	err = serio_open(serio, drv);
294	if (err)
295		goto out_free;
 
 
 
 
296
297	list_add_tail(&serio_raw->node, &serio_raw_list);
 
298
299	serio_raw->dev.minor = PSMOUSE_MINOR;
300	serio_raw->dev.name = serio_raw->name;
301	serio_raw->dev.parent = &serio->dev;
302	serio_raw->dev.fops = &serio_raw_fops;
303
304	err = misc_register(&serio_raw->dev);
305	if (err) {
306		serio_raw->dev.minor = MISC_DYNAMIC_MINOR;
307		err = misc_register(&serio_raw->dev);
308	}
309
310	if (err) {
311		printk(KERN_INFO "serio_raw: failed to register raw access device for %s\n",
 
312			serio->phys);
313		goto out_close;
314	}
315
316	printk(KERN_INFO "serio_raw: raw access enabled on %s (%s, minor %d)\n",
317		serio->phys, serio_raw->name, serio_raw->dev.minor);
318	goto out;
319
320out_close:
321	serio_close(serio);
322	list_del_init(&serio_raw->node);
323out_free:
 
 
324	serio_set_drvdata(serio, NULL);
325	kfree(serio_raw);
326out:
327	mutex_unlock(&serio_raw_mutex);
328	return err;
329}
330
331static int serio_raw_reconnect(struct serio *serio)
332{
333	struct serio_raw *serio_raw = serio_get_drvdata(serio);
334	struct serio_driver *drv = serio->drv;
335
336	if (!drv || !serio_raw) {
337		printk(KERN_DEBUG "serio_raw: reconnect request, but serio is disconnected, ignoring...\n");
 
338		return -1;
339	}
340
341	/*
342	 * Nothing needs to be done here, we just need this method to
343	 * keep the same device.
344	 */
345	return 0;
346}
347
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
348static void serio_raw_disconnect(struct serio *serio)
349{
350	struct serio_raw *serio_raw;
 
 
351
352	mutex_lock(&serio_raw_mutex);
 
 
 
353
354	serio_raw = serio_get_drvdata(serio);
355
356	serio_close(serio);
357	serio_set_drvdata(serio, NULL);
358
359	serio_raw->serio = NULL;
360	if (!serio_raw_cleanup(serio_raw))
361		wake_up_interruptible(&serio_raw->wait);
362
363	mutex_unlock(&serio_raw_mutex);
364}
365
366static struct serio_device_id serio_raw_serio_ids[] = {
367	{
368		.type	= SERIO_8042,
369		.proto	= SERIO_ANY,
370		.id	= SERIO_ANY,
371		.extra	= SERIO_ANY,
372	},
373	{
374		.type	= SERIO_8042_XL,
375		.proto	= SERIO_ANY,
376		.id	= SERIO_ANY,
377		.extra	= SERIO_ANY,
378	},
379	{ 0 }
380};
381
382MODULE_DEVICE_TABLE(serio, serio_raw_serio_ids);
383
384static struct serio_driver serio_raw_drv = {
385	.driver		= {
386		.name	= "serio_raw",
387	},
388	.description	= DRIVER_DESC,
389	.id_table	= serio_raw_serio_ids,
390	.interrupt	= serio_raw_interrupt,
391	.connect	= serio_raw_connect,
392	.reconnect	= serio_raw_reconnect,
393	.disconnect	= serio_raw_disconnect,
394	.manual_bind	= 1,
395};
396
397static int __init serio_raw_init(void)
398{
399	return serio_register_driver(&serio_raw_drv);
400}
401
402static void __exit serio_raw_exit(void)
403{
404	serio_unregister_driver(&serio_raw_drv);
405}
406
407module_init(serio_raw_init);
408module_exit(serio_raw_exit);
v5.9
  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * Raw serio device providing access to a raw byte stream from underlying
  4 * serio port. Closely emulates behavior of pre-2.6 /dev/psaux device
  5 *
  6 * Copyright (c) 2004 Dmitry Torokhov
 
 
 
 
  7 */
  8
  9#include <linux/kref.h>
 10#include <linux/sched.h>
 11#include <linux/slab.h>
 12#include <linux/poll.h>
 13#include <linux/module.h>
 14#include <linux/serio.h>
 
 15#include <linux/major.h>
 16#include <linux/device.h>
 17#include <linux/miscdevice.h>
 18#include <linux/wait.h>
 19#include <linux/mutex.h>
 20
 21#define DRIVER_DESC	"Raw serio driver"
 22
 23MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>");
 24MODULE_DESCRIPTION(DRIVER_DESC);
 25MODULE_LICENSE("GPL");
 26
 27#define SERIO_RAW_QUEUE_LEN	64
 28struct serio_raw {
 29	unsigned char queue[SERIO_RAW_QUEUE_LEN];
 30	unsigned int tail, head;
 31
 32	char name[16];
 33	struct kref kref;
 34	struct serio *serio;
 35	struct miscdevice dev;
 36	wait_queue_head_t wait;
 37	struct list_head client_list;
 38	struct list_head node;
 39	bool dead;
 40};
 41
 42struct serio_raw_client {
 43	struct fasync_struct *fasync;
 44	struct serio_raw *serio_raw;
 45	struct list_head node;
 46};
 47
 48static DEFINE_MUTEX(serio_raw_mutex);
 49static LIST_HEAD(serio_raw_list);
 
 50
 51/*********************************************************************
 52 *             Interface with userspace (file operations)            *
 53 *********************************************************************/
 54
 55static int serio_raw_fasync(int fd, struct file *file, int on)
 56{
 57	struct serio_raw_client *client = file->private_data;
 58
 59	return fasync_helper(fd, file, on, &client->fasync);
 60}
 61
 62static struct serio_raw *serio_raw_locate(int minor)
 63{
 64	struct serio_raw *serio_raw;
 65
 66	list_for_each_entry(serio_raw, &serio_raw_list, node) {
 67		if (serio_raw->dev.minor == minor)
 68			return serio_raw;
 69	}
 70
 71	return NULL;
 72}
 73
 74static int serio_raw_open(struct inode *inode, struct file *file)
 75{
 76	struct serio_raw *serio_raw;
 77	struct serio_raw_client *client;
 78	int retval;
 79
 80	retval = mutex_lock_interruptible(&serio_raw_mutex);
 81	if (retval)
 82		return retval;
 83
 84	serio_raw = serio_raw_locate(iminor(inode));
 85	if (!serio_raw) {
 86		retval = -ENODEV;
 87		goto out;
 88	}
 89
 90	if (serio_raw->dead) {
 91		retval = -ENODEV;
 92		goto out;
 93	}
 94
 95	client = kzalloc(sizeof(struct serio_raw_client), GFP_KERNEL);
 96	if (!client) {
 97		retval = -ENOMEM;
 98		goto out;
 99	}
100
101	client->serio_raw = serio_raw;
102	file->private_data = client;
103
104	kref_get(&serio_raw->kref);
105
106	serio_pause_rx(serio_raw->serio);
107	list_add_tail(&client->node, &serio_raw->client_list);
108	serio_continue_rx(serio_raw->serio);
109
110out:
111	mutex_unlock(&serio_raw_mutex);
112	return retval;
113}
114
115static void serio_raw_free(struct kref *kref)
116{
117	struct serio_raw *serio_raw =
118			container_of(kref, struct serio_raw, kref);
 
 
119
120	put_device(&serio_raw->serio->dev);
121	kfree(serio_raw);
 
 
122}
123
124static int serio_raw_release(struct inode *inode, struct file *file)
125{
126	struct serio_raw_client *client = file->private_data;
127	struct serio_raw *serio_raw = client->serio_raw;
128
129	serio_pause_rx(serio_raw->serio);
130	list_del(&client->node);
131	serio_continue_rx(serio_raw->serio);
132
133	kfree(client);
134
135	kref_put(&serio_raw->kref, serio_raw_free);
136
 
137	return 0;
138}
139
140static bool serio_raw_fetch_byte(struct serio_raw *serio_raw, char *c)
141{
142	bool empty;
 
143
144	serio_pause_rx(serio_raw->serio);
145
146	empty = serio_raw->head == serio_raw->tail;
147	if (!empty) {
148		*c = serio_raw->queue[serio_raw->tail];
149		serio_raw->tail = (serio_raw->tail + 1) % SERIO_RAW_QUEUE_LEN;
150	}
151
152	serio_continue_rx(serio_raw->serio);
153
154	return !empty;
155}
156
157static ssize_t serio_raw_read(struct file *file, char __user *buffer,
158			      size_t count, loff_t *ppos)
159{
160	struct serio_raw_client *client = file->private_data;
161	struct serio_raw *serio_raw = client->serio_raw;
162	char c;
163	ssize_t read = 0;
164	int error;
165
166	for (;;) {
167		if (serio_raw->dead)
168			return -ENODEV;
169
170		if (serio_raw->head == serio_raw->tail &&
171		    (file->f_flags & O_NONBLOCK))
172			return -EAGAIN;
173
174		if (count == 0)
175			break;
176
177		while (read < count && serio_raw_fetch_byte(serio_raw, &c)) {
178			if (put_user(c, buffer++))
179				return -EFAULT;
180			read++;
181		}
182
183		if (read)
184			break;
185
186		if (!(file->f_flags & O_NONBLOCK)) {
187			error = wait_event_interruptible(serio_raw->wait,
188					serio_raw->head != serio_raw->tail ||
189					serio_raw->dead);
190			if (error)
191				return error;
192		}
193	}
194
195	return read;
196}
197
198static ssize_t serio_raw_write(struct file *file, const char __user *buffer,
199			       size_t count, loff_t *ppos)
200{
201	struct serio_raw_client *client = file->private_data;
202	struct serio_raw *serio_raw = client->serio_raw;
203	int retval = 0;
204	unsigned char c;
205
206	retval = mutex_lock_interruptible(&serio_raw_mutex);
207	if (retval)
208		return retval;
209
210	if (serio_raw->dead) {
211		retval = -ENODEV;
212		goto out;
213	}
214
215	if (count > 32)
216		count = 32;
217
218	while (count--) {
219		if (get_user(c, buffer++)) {
220			retval = -EFAULT;
221			goto out;
222		}
223
224		if (serio_write(serio_raw->serio, c)) {
225			/* Either signal error or partial write */
226			if (retval == 0)
227				retval = -EIO;
228			goto out;
229		}
230
231		retval++;
232	}
233
234out:
235	mutex_unlock(&serio_raw_mutex);
236	return retval;
237}
238
239static __poll_t serio_raw_poll(struct file *file, poll_table *wait)
240{
241	struct serio_raw_client *client = file->private_data;
242	struct serio_raw *serio_raw = client->serio_raw;
243	__poll_t mask;
244
245	poll_wait(file, &serio_raw->wait, wait);
246
247	mask = serio_raw->dead ? EPOLLHUP | EPOLLERR : EPOLLOUT | EPOLLWRNORM;
248	if (serio_raw->head != serio_raw->tail)
249		mask |= EPOLLIN | EPOLLRDNORM;
250
251	return mask;
252}
253
254static const struct file_operations serio_raw_fops = {
255	.owner		= THIS_MODULE,
256	.open		= serio_raw_open,
257	.release	= serio_raw_release,
258	.read		= serio_raw_read,
259	.write		= serio_raw_write,
260	.poll		= serio_raw_poll,
261	.fasync		= serio_raw_fasync,
262	.llseek		= noop_llseek,
263};
264
265
266/*********************************************************************
267 *                   Interface with serio port                       *
268 *********************************************************************/
269
270static irqreturn_t serio_raw_interrupt(struct serio *serio, unsigned char data,
271					unsigned int dfl)
272{
273	struct serio_raw *serio_raw = serio_get_drvdata(serio);
274	struct serio_raw_client *client;
275	unsigned int head = serio_raw->head;
276
277	/* we are holding serio->lock here so we are protected */
278	serio_raw->queue[head] = data;
279	head = (head + 1) % SERIO_RAW_QUEUE_LEN;
280	if (likely(head != serio_raw->tail)) {
281		serio_raw->head = head;
282		list_for_each_entry(client, &serio_raw->client_list, node)
283			kill_fasync(&client->fasync, SIGIO, POLL_IN);
284		wake_up_interruptible(&serio_raw->wait);
285	}
286
287	return IRQ_HANDLED;
288}
289
290static int serio_raw_connect(struct serio *serio, struct serio_driver *drv)
291{
292	static atomic_t serio_raw_no = ATOMIC_INIT(-1);
293	struct serio_raw *serio_raw;
294	int err;
295
296	serio_raw = kzalloc(sizeof(struct serio_raw), GFP_KERNEL);
297	if (!serio_raw) {
298		dev_dbg(&serio->dev, "can't allocate memory for a device\n");
299		return -ENOMEM;
300	}
301
302	snprintf(serio_raw->name, sizeof(serio_raw->name),
303		 "serio_raw%ld", (long)atomic_inc_return(&serio_raw_no));
304	kref_init(&serio_raw->kref);
305	INIT_LIST_HEAD(&serio_raw->client_list);
306	init_waitqueue_head(&serio_raw->wait);
307
 
 
308	serio_raw->serio = serio;
309	get_device(&serio->dev);
 
310
311	serio_set_drvdata(serio, serio_raw);
312
313	err = serio_open(serio, drv);
314	if (err)
315		goto err_free;
316
317	err = mutex_lock_killable(&serio_raw_mutex);
318	if (err)
319		goto err_close;
320
321	list_add_tail(&serio_raw->node, &serio_raw_list);
322	mutex_unlock(&serio_raw_mutex);
323
324	serio_raw->dev.minor = PSMOUSE_MINOR;
325	serio_raw->dev.name = serio_raw->name;
326	serio_raw->dev.parent = &serio->dev;
327	serio_raw->dev.fops = &serio_raw_fops;
328
329	err = misc_register(&serio_raw->dev);
330	if (err) {
331		serio_raw->dev.minor = MISC_DYNAMIC_MINOR;
332		err = misc_register(&serio_raw->dev);
333	}
334
335	if (err) {
336		dev_err(&serio->dev,
337			"failed to register raw access device for %s\n",
338			serio->phys);
339		goto err_unlink;
340	}
341
342	dev_info(&serio->dev, "raw access enabled on %s (%s, minor %d)\n",
343		 serio->phys, serio_raw->name, serio_raw->dev.minor);
344	return 0;
345
346err_unlink:
 
347	list_del_init(&serio_raw->node);
348err_close:
349	serio_close(serio);
350err_free:
351	serio_set_drvdata(serio, NULL);
352	kref_put(&serio_raw->kref, serio_raw_free);
 
 
353	return err;
354}
355
356static int serio_raw_reconnect(struct serio *serio)
357{
358	struct serio_raw *serio_raw = serio_get_drvdata(serio);
359	struct serio_driver *drv = serio->drv;
360
361	if (!drv || !serio_raw) {
362		dev_dbg(&serio->dev,
363			"reconnect request, but serio is disconnected, ignoring...\n");
364		return -1;
365	}
366
367	/*
368	 * Nothing needs to be done here, we just need this method to
369	 * keep the same device.
370	 */
371	return 0;
372}
373
374/*
375 * Wake up users waiting for IO so they can disconnect from
376 * dead device.
377 */
378static void serio_raw_hangup(struct serio_raw *serio_raw)
379{
380	struct serio_raw_client *client;
381
382	serio_pause_rx(serio_raw->serio);
383	list_for_each_entry(client, &serio_raw->client_list, node)
384		kill_fasync(&client->fasync, SIGIO, POLL_HUP);
385	serio_continue_rx(serio_raw->serio);
386
387	wake_up_interruptible(&serio_raw->wait);
388}
389
390
391static void serio_raw_disconnect(struct serio *serio)
392{
393	struct serio_raw *serio_raw = serio_get_drvdata(serio);
394
395	misc_deregister(&serio_raw->dev);
396
397	mutex_lock(&serio_raw_mutex);
398	serio_raw->dead = true;
399	list_del_init(&serio_raw->node);
400	mutex_unlock(&serio_raw_mutex);
401
402	serio_raw_hangup(serio_raw);
403
404	serio_close(serio);
405	kref_put(&serio_raw->kref, serio_raw_free);
 
 
 
 
406
407	serio_set_drvdata(serio, NULL);
408}
409
410static const struct serio_device_id serio_raw_serio_ids[] = {
411	{
412		.type	= SERIO_8042,
413		.proto	= SERIO_ANY,
414		.id	= SERIO_ANY,
415		.extra	= SERIO_ANY,
416	},
417	{
418		.type	= SERIO_8042_XL,
419		.proto	= SERIO_ANY,
420		.id	= SERIO_ANY,
421		.extra	= SERIO_ANY,
422	},
423	{ 0 }
424};
425
426MODULE_DEVICE_TABLE(serio, serio_raw_serio_ids);
427
428static struct serio_driver serio_raw_drv = {
429	.driver		= {
430		.name	= "serio_raw",
431	},
432	.description	= DRIVER_DESC,
433	.id_table	= serio_raw_serio_ids,
434	.interrupt	= serio_raw_interrupt,
435	.connect	= serio_raw_connect,
436	.reconnect	= serio_raw_reconnect,
437	.disconnect	= serio_raw_disconnect,
438	.manual_bind	= true,
439};
440
441module_serio_driver(serio_raw_drv);