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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2008 by Karsten Keil <kkeil@novell.com>
4 */
5
6#include <linux/slab.h>
7#include <linux/types.h>
8#include <linux/stddef.h>
9#include <linux/module.h>
10#include <linux/spinlock.h>
11#include <linux/mISDNif.h>
12#include "core.h"
13
14static u_int debug;
15
16MODULE_AUTHOR("Karsten Keil");
17MODULE_LICENSE("GPL");
18module_param(debug, uint, S_IRUGO | S_IWUSR);
19
20static u64 device_ids;
21#define MAX_DEVICE_ID 63
22
23static LIST_HEAD(Bprotocols);
24static DEFINE_RWLOCK(bp_lock);
25
26static void mISDN_dev_release(struct device *dev)
27{
28 /* nothing to do: the device is part of its parent's data structure */
29}
30
31static ssize_t id_show(struct device *dev,
32 struct device_attribute *attr, char *buf)
33{
34 struct mISDNdevice *mdev = dev_to_mISDN(dev);
35
36 if (!mdev)
37 return -ENODEV;
38 return sprintf(buf, "%d\n", mdev->id);
39}
40static DEVICE_ATTR_RO(id);
41
42static ssize_t nrbchan_show(struct device *dev,
43 struct device_attribute *attr, char *buf)
44{
45 struct mISDNdevice *mdev = dev_to_mISDN(dev);
46
47 if (!mdev)
48 return -ENODEV;
49 return sprintf(buf, "%d\n", mdev->nrbchan);
50}
51static DEVICE_ATTR_RO(nrbchan);
52
53static ssize_t d_protocols_show(struct device *dev,
54 struct device_attribute *attr, char *buf)
55{
56 struct mISDNdevice *mdev = dev_to_mISDN(dev);
57
58 if (!mdev)
59 return -ENODEV;
60 return sprintf(buf, "%d\n", mdev->Dprotocols);
61}
62static DEVICE_ATTR_RO(d_protocols);
63
64static ssize_t b_protocols_show(struct device *dev,
65 struct device_attribute *attr, char *buf)
66{
67 struct mISDNdevice *mdev = dev_to_mISDN(dev);
68
69 if (!mdev)
70 return -ENODEV;
71 return sprintf(buf, "%d\n", mdev->Bprotocols | get_all_Bprotocols());
72}
73static DEVICE_ATTR_RO(b_protocols);
74
75static ssize_t protocol_show(struct device *dev,
76 struct device_attribute *attr, char *buf)
77{
78 struct mISDNdevice *mdev = dev_to_mISDN(dev);
79
80 if (!mdev)
81 return -ENODEV;
82 return sprintf(buf, "%d\n", mdev->D.protocol);
83}
84static DEVICE_ATTR_RO(protocol);
85
86static ssize_t name_show(struct device *dev,
87 struct device_attribute *attr, char *buf)
88{
89 strcpy(buf, dev_name(dev));
90 return strlen(buf);
91}
92static DEVICE_ATTR_RO(name);
93
94#if 0 /* hangs */
95static ssize_t name_set(struct device *dev, struct device_attribute *attr,
96 const char *buf, size_t count)
97{
98 int err = 0;
99 char *out = kmalloc(count + 1, GFP_KERNEL);
100
101 if (!out)
102 return -ENOMEM;
103
104 memcpy(out, buf, count);
105 if (count && out[count - 1] == '\n')
106 out[--count] = 0;
107 if (count)
108 err = device_rename(dev, out);
109 kfree(out);
110
111 return (err < 0) ? err : count;
112}
113static DEVICE_ATTR_RW(name);
114#endif
115
116static ssize_t channelmap_show(struct device *dev,
117 struct device_attribute *attr, char *buf)
118{
119 struct mISDNdevice *mdev = dev_to_mISDN(dev);
120 char *bp = buf;
121 int i;
122
123 for (i = 0; i <= mdev->nrbchan; i++)
124 *bp++ = test_channelmap(i, mdev->channelmap) ? '1' : '0';
125
126 return bp - buf;
127}
128static DEVICE_ATTR_RO(channelmap);
129
130static struct attribute *mISDN_attrs[] = {
131 &dev_attr_id.attr,
132 &dev_attr_d_protocols.attr,
133 &dev_attr_b_protocols.attr,
134 &dev_attr_protocol.attr,
135 &dev_attr_channelmap.attr,
136 &dev_attr_nrbchan.attr,
137 &dev_attr_name.attr,
138 NULL,
139};
140ATTRIBUTE_GROUPS(mISDN);
141
142static int mISDN_uevent(const struct device *dev, struct kobj_uevent_env *env)
143{
144 const struct mISDNdevice *mdev = dev_to_mISDN(dev);
145
146 if (!mdev)
147 return 0;
148
149 if (add_uevent_var(env, "nchans=%d", mdev->nrbchan))
150 return -ENOMEM;
151
152 return 0;
153}
154
155static struct class mISDN_class = {
156 .name = "mISDN",
157 .dev_uevent = mISDN_uevent,
158 .dev_groups = mISDN_groups,
159 .dev_release = mISDN_dev_release,
160};
161
162static int
163_get_mdevice(struct device *dev, const void *id)
164{
165 struct mISDNdevice *mdev = dev_to_mISDN(dev);
166
167 if (!mdev)
168 return 0;
169 if (mdev->id != *(const u_int *)id)
170 return 0;
171 return 1;
172}
173
174struct mISDNdevice
175*get_mdevice(u_int id)
176{
177 return dev_to_mISDN(class_find_device(&mISDN_class, NULL, &id,
178 _get_mdevice));
179}
180
181static int
182_get_mdevice_count(struct device *dev, void *cnt)
183{
184 *(int *)cnt += 1;
185 return 0;
186}
187
188int
189get_mdevice_count(void)
190{
191 int cnt = 0;
192
193 class_for_each_device(&mISDN_class, NULL, &cnt, _get_mdevice_count);
194 return cnt;
195}
196
197static int
198get_free_devid(void)
199{
200 u_int i;
201
202 for (i = 0; i <= MAX_DEVICE_ID; i++)
203 if (!test_and_set_bit(i, (u_long *)&device_ids))
204 break;
205 if (i > MAX_DEVICE_ID)
206 return -EBUSY;
207 return i;
208}
209
210int
211mISDN_register_device(struct mISDNdevice *dev,
212 struct device *parent, char *name)
213{
214 int err;
215
216 err = get_free_devid();
217 if (err < 0)
218 return err;
219 dev->id = err;
220
221 device_initialize(&dev->dev);
222 if (name && name[0])
223 dev_set_name(&dev->dev, "%s", name);
224 else
225 dev_set_name(&dev->dev, "mISDN%d", dev->id);
226 if (debug & DEBUG_CORE)
227 printk(KERN_DEBUG "mISDN_register %s %d\n",
228 dev_name(&dev->dev), dev->id);
229 dev->dev.class = &mISDN_class;
230
231 err = create_stack(dev);
232 if (err)
233 goto error1;
234
235 dev->dev.platform_data = dev;
236 dev->dev.parent = parent;
237 dev_set_drvdata(&dev->dev, dev);
238
239 err = device_add(&dev->dev);
240 if (err)
241 goto error3;
242 return 0;
243
244error3:
245 delete_stack(dev);
246error1:
247 put_device(&dev->dev);
248 return err;
249
250}
251EXPORT_SYMBOL(mISDN_register_device);
252
253void
254mISDN_unregister_device(struct mISDNdevice *dev) {
255 if (debug & DEBUG_CORE)
256 printk(KERN_DEBUG "mISDN_unregister %s %d\n",
257 dev_name(&dev->dev), dev->id);
258 /* sysfs_remove_link(&dev->dev.kobj, "device"); */
259 device_del(&dev->dev);
260 dev_set_drvdata(&dev->dev, NULL);
261
262 test_and_clear_bit(dev->id, (u_long *)&device_ids);
263 delete_stack(dev);
264 put_device(&dev->dev);
265}
266EXPORT_SYMBOL(mISDN_unregister_device);
267
268u_int
269get_all_Bprotocols(void)
270{
271 struct Bprotocol *bp;
272 u_int m = 0;
273
274 read_lock(&bp_lock);
275 list_for_each_entry(bp, &Bprotocols, list)
276 m |= bp->Bprotocols;
277 read_unlock(&bp_lock);
278 return m;
279}
280
281struct Bprotocol *
282get_Bprotocol4mask(u_int m)
283{
284 struct Bprotocol *bp;
285
286 read_lock(&bp_lock);
287 list_for_each_entry(bp, &Bprotocols, list)
288 if (bp->Bprotocols & m) {
289 read_unlock(&bp_lock);
290 return bp;
291 }
292 read_unlock(&bp_lock);
293 return NULL;
294}
295
296struct Bprotocol *
297get_Bprotocol4id(u_int id)
298{
299 u_int m;
300
301 if (id < ISDN_P_B_START || id > 63) {
302 printk(KERN_WARNING "%s id not in range %d\n",
303 __func__, id);
304 return NULL;
305 }
306 m = 1 << (id & ISDN_P_B_MASK);
307 return get_Bprotocol4mask(m);
308}
309
310int
311mISDN_register_Bprotocol(struct Bprotocol *bp)
312{
313 u_long flags;
314 struct Bprotocol *old;
315
316 if (debug & DEBUG_CORE)
317 printk(KERN_DEBUG "%s: %s/%x\n", __func__,
318 bp->name, bp->Bprotocols);
319 old = get_Bprotocol4mask(bp->Bprotocols);
320 if (old) {
321 printk(KERN_WARNING
322 "register duplicate protocol old %s/%x new %s/%x\n",
323 old->name, old->Bprotocols, bp->name, bp->Bprotocols);
324 return -EBUSY;
325 }
326 write_lock_irqsave(&bp_lock, flags);
327 list_add_tail(&bp->list, &Bprotocols);
328 write_unlock_irqrestore(&bp_lock, flags);
329 return 0;
330}
331EXPORT_SYMBOL(mISDN_register_Bprotocol);
332
333void
334mISDN_unregister_Bprotocol(struct Bprotocol *bp)
335{
336 u_long flags;
337
338 if (debug & DEBUG_CORE)
339 printk(KERN_DEBUG "%s: %s/%x\n", __func__, bp->name,
340 bp->Bprotocols);
341 write_lock_irqsave(&bp_lock, flags);
342 list_del(&bp->list);
343 write_unlock_irqrestore(&bp_lock, flags);
344}
345EXPORT_SYMBOL(mISDN_unregister_Bprotocol);
346
347static const char *msg_no_channel = "<no channel>";
348static const char *msg_no_stack = "<no stack>";
349static const char *msg_no_stackdev = "<no stack device>";
350
351const char *mISDNDevName4ch(struct mISDNchannel *ch)
352{
353 if (!ch)
354 return msg_no_channel;
355 if (!ch->st)
356 return msg_no_stack;
357 if (!ch->st->dev)
358 return msg_no_stackdev;
359 return dev_name(&ch->st->dev->dev);
360};
361EXPORT_SYMBOL(mISDNDevName4ch);
362
363static int
364mISDNInit(void)
365{
366 int err;
367
368 printk(KERN_INFO "Modular ISDN core version %d.%d.%d\n",
369 MISDN_MAJOR_VERSION, MISDN_MINOR_VERSION, MISDN_RELEASE);
370 mISDN_init_clock(&debug);
371 mISDN_initstack(&debug);
372 err = class_register(&mISDN_class);
373 if (err)
374 goto error1;
375 err = mISDN_inittimer(&debug);
376 if (err)
377 goto error2;
378 err = Isdnl1_Init(&debug);
379 if (err)
380 goto error3;
381 err = Isdnl2_Init(&debug);
382 if (err)
383 goto error4;
384 err = misdn_sock_init(&debug);
385 if (err)
386 goto error5;
387 return 0;
388
389error5:
390 Isdnl2_cleanup();
391error4:
392 Isdnl1_cleanup();
393error3:
394 mISDN_timer_cleanup();
395error2:
396 class_unregister(&mISDN_class);
397error1:
398 return err;
399}
400
401static void mISDN_cleanup(void)
402{
403 misdn_sock_cleanup();
404 Isdnl2_cleanup();
405 Isdnl1_cleanup();
406 mISDN_timer_cleanup();
407 class_unregister(&mISDN_class);
408
409 printk(KERN_DEBUG "mISDNcore unloaded\n");
410}
411
412module_init(mISDNInit);
413module_exit(mISDN_cleanup);
1/*
2 * Copyright 2008 by Karsten Keil <kkeil@novell.com>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 */
14
15#include <linux/slab.h>
16#include <linux/types.h>
17#include <linux/stddef.h>
18#include <linux/module.h>
19#include <linux/spinlock.h>
20#include <linux/mISDNif.h>
21#include "core.h"
22
23static u_int debug;
24
25MODULE_AUTHOR("Karsten Keil");
26MODULE_LICENSE("GPL");
27module_param(debug, uint, S_IRUGO | S_IWUSR);
28
29static u64 device_ids;
30#define MAX_DEVICE_ID 63
31
32static LIST_HEAD(Bprotocols);
33static DEFINE_RWLOCK(bp_lock);
34
35static void mISDN_dev_release(struct device *dev)
36{
37 /* nothing to do: the device is part of its parent's data structure */
38}
39
40static ssize_t id_show(struct device *dev,
41 struct device_attribute *attr, char *buf)
42{
43 struct mISDNdevice *mdev = dev_to_mISDN(dev);
44
45 if (!mdev)
46 return -ENODEV;
47 return sprintf(buf, "%d\n", mdev->id);
48}
49static DEVICE_ATTR_RO(id);
50
51static ssize_t nrbchan_show(struct device *dev,
52 struct device_attribute *attr, char *buf)
53{
54 struct mISDNdevice *mdev = dev_to_mISDN(dev);
55
56 if (!mdev)
57 return -ENODEV;
58 return sprintf(buf, "%d\n", mdev->nrbchan);
59}
60static DEVICE_ATTR_RO(nrbchan);
61
62static ssize_t d_protocols_show(struct device *dev,
63 struct device_attribute *attr, char *buf)
64{
65 struct mISDNdevice *mdev = dev_to_mISDN(dev);
66
67 if (!mdev)
68 return -ENODEV;
69 return sprintf(buf, "%d\n", mdev->Dprotocols);
70}
71static DEVICE_ATTR_RO(d_protocols);
72
73static ssize_t b_protocols_show(struct device *dev,
74 struct device_attribute *attr, char *buf)
75{
76 struct mISDNdevice *mdev = dev_to_mISDN(dev);
77
78 if (!mdev)
79 return -ENODEV;
80 return sprintf(buf, "%d\n", mdev->Bprotocols | get_all_Bprotocols());
81}
82static DEVICE_ATTR_RO(b_protocols);
83
84static ssize_t protocol_show(struct device *dev,
85 struct device_attribute *attr, char *buf)
86{
87 struct mISDNdevice *mdev = dev_to_mISDN(dev);
88
89 if (!mdev)
90 return -ENODEV;
91 return sprintf(buf, "%d\n", mdev->D.protocol);
92}
93static DEVICE_ATTR_RO(protocol);
94
95static ssize_t name_show(struct device *dev,
96 struct device_attribute *attr, char *buf)
97{
98 strcpy(buf, dev_name(dev));
99 return strlen(buf);
100}
101static DEVICE_ATTR_RO(name);
102
103#if 0 /* hangs */
104static ssize_t name_set(struct device *dev, struct device_attribute *attr,
105 const char *buf, size_t count)
106{
107 int err = 0;
108 char *out = kmalloc(count + 1, GFP_KERNEL);
109
110 if (!out)
111 return -ENOMEM;
112
113 memcpy(out, buf, count);
114 if (count && out[count - 1] == '\n')
115 out[--count] = 0;
116 if (count)
117 err = device_rename(dev, out);
118 kfree(out);
119
120 return (err < 0) ? err : count;
121}
122static DEVICE_ATTR_RW(name);
123#endif
124
125static ssize_t channelmap_show(struct device *dev,
126 struct device_attribute *attr, char *buf)
127{
128 struct mISDNdevice *mdev = dev_to_mISDN(dev);
129 char *bp = buf;
130 int i;
131
132 for (i = 0; i <= mdev->nrbchan; i++)
133 *bp++ = test_channelmap(i, mdev->channelmap) ? '1' : '0';
134
135 return bp - buf;
136}
137static DEVICE_ATTR_RO(channelmap);
138
139static struct attribute *mISDN_attrs[] = {
140 &dev_attr_id.attr,
141 &dev_attr_d_protocols.attr,
142 &dev_attr_b_protocols.attr,
143 &dev_attr_protocol.attr,
144 &dev_attr_channelmap.attr,
145 &dev_attr_nrbchan.attr,
146 &dev_attr_name.attr,
147 NULL,
148};
149ATTRIBUTE_GROUPS(mISDN);
150
151static int mISDN_uevent(struct device *dev, struct kobj_uevent_env *env)
152{
153 struct mISDNdevice *mdev = dev_to_mISDN(dev);
154
155 if (!mdev)
156 return 0;
157
158 if (add_uevent_var(env, "nchans=%d", mdev->nrbchan))
159 return -ENOMEM;
160
161 return 0;
162}
163
164static void mISDN_class_release(struct class *cls)
165{
166 /* do nothing, it's static */
167}
168
169static struct class mISDN_class = {
170 .name = "mISDN",
171 .owner = THIS_MODULE,
172 .dev_uevent = mISDN_uevent,
173 .dev_groups = mISDN_groups,
174 .dev_release = mISDN_dev_release,
175 .class_release = mISDN_class_release,
176};
177
178static int
179_get_mdevice(struct device *dev, const void *id)
180{
181 struct mISDNdevice *mdev = dev_to_mISDN(dev);
182
183 if (!mdev)
184 return 0;
185 if (mdev->id != *(const u_int *)id)
186 return 0;
187 return 1;
188}
189
190struct mISDNdevice
191*get_mdevice(u_int id)
192{
193 return dev_to_mISDN(class_find_device(&mISDN_class, NULL, &id,
194 _get_mdevice));
195}
196
197static int
198_get_mdevice_count(struct device *dev, void *cnt)
199{
200 *(int *)cnt += 1;
201 return 0;
202}
203
204int
205get_mdevice_count(void)
206{
207 int cnt = 0;
208
209 class_for_each_device(&mISDN_class, NULL, &cnt, _get_mdevice_count);
210 return cnt;
211}
212
213static int
214get_free_devid(void)
215{
216 u_int i;
217
218 for (i = 0; i <= MAX_DEVICE_ID; i++)
219 if (!test_and_set_bit(i, (u_long *)&device_ids))
220 break;
221 if (i > MAX_DEVICE_ID)
222 return -EBUSY;
223 return i;
224}
225
226int
227mISDN_register_device(struct mISDNdevice *dev,
228 struct device *parent, char *name)
229{
230 int err;
231
232 err = get_free_devid();
233 if (err < 0)
234 goto error1;
235 dev->id = err;
236
237 device_initialize(&dev->dev);
238 if (name && name[0])
239 dev_set_name(&dev->dev, "%s", name);
240 else
241 dev_set_name(&dev->dev, "mISDN%d", dev->id);
242 if (debug & DEBUG_CORE)
243 printk(KERN_DEBUG "mISDN_register %s %d\n",
244 dev_name(&dev->dev), dev->id);
245 err = create_stack(dev);
246 if (err)
247 goto error1;
248
249 dev->dev.class = &mISDN_class;
250 dev->dev.platform_data = dev;
251 dev->dev.parent = parent;
252 dev_set_drvdata(&dev->dev, dev);
253
254 err = device_add(&dev->dev);
255 if (err)
256 goto error3;
257 return 0;
258
259error3:
260 delete_stack(dev);
261 return err;
262error1:
263 return err;
264
265}
266EXPORT_SYMBOL(mISDN_register_device);
267
268void
269mISDN_unregister_device(struct mISDNdevice *dev) {
270 if (debug & DEBUG_CORE)
271 printk(KERN_DEBUG "mISDN_unregister %s %d\n",
272 dev_name(&dev->dev), dev->id);
273 /* sysfs_remove_link(&dev->dev.kobj, "device"); */
274 device_del(&dev->dev);
275 dev_set_drvdata(&dev->dev, NULL);
276
277 test_and_clear_bit(dev->id, (u_long *)&device_ids);
278 delete_stack(dev);
279 put_device(&dev->dev);
280}
281EXPORT_SYMBOL(mISDN_unregister_device);
282
283u_int
284get_all_Bprotocols(void)
285{
286 struct Bprotocol *bp;
287 u_int m = 0;
288
289 read_lock(&bp_lock);
290 list_for_each_entry(bp, &Bprotocols, list)
291 m |= bp->Bprotocols;
292 read_unlock(&bp_lock);
293 return m;
294}
295
296struct Bprotocol *
297get_Bprotocol4mask(u_int m)
298{
299 struct Bprotocol *bp;
300
301 read_lock(&bp_lock);
302 list_for_each_entry(bp, &Bprotocols, list)
303 if (bp->Bprotocols & m) {
304 read_unlock(&bp_lock);
305 return bp;
306 }
307 read_unlock(&bp_lock);
308 return NULL;
309}
310
311struct Bprotocol *
312get_Bprotocol4id(u_int id)
313{
314 u_int m;
315
316 if (id < ISDN_P_B_START || id > 63) {
317 printk(KERN_WARNING "%s id not in range %d\n",
318 __func__, id);
319 return NULL;
320 }
321 m = 1 << (id & ISDN_P_B_MASK);
322 return get_Bprotocol4mask(m);
323}
324
325int
326mISDN_register_Bprotocol(struct Bprotocol *bp)
327{
328 u_long flags;
329 struct Bprotocol *old;
330
331 if (debug & DEBUG_CORE)
332 printk(KERN_DEBUG "%s: %s/%x\n", __func__,
333 bp->name, bp->Bprotocols);
334 old = get_Bprotocol4mask(bp->Bprotocols);
335 if (old) {
336 printk(KERN_WARNING
337 "register duplicate protocol old %s/%x new %s/%x\n",
338 old->name, old->Bprotocols, bp->name, bp->Bprotocols);
339 return -EBUSY;
340 }
341 write_lock_irqsave(&bp_lock, flags);
342 list_add_tail(&bp->list, &Bprotocols);
343 write_unlock_irqrestore(&bp_lock, flags);
344 return 0;
345}
346EXPORT_SYMBOL(mISDN_register_Bprotocol);
347
348void
349mISDN_unregister_Bprotocol(struct Bprotocol *bp)
350{
351 u_long flags;
352
353 if (debug & DEBUG_CORE)
354 printk(KERN_DEBUG "%s: %s/%x\n", __func__, bp->name,
355 bp->Bprotocols);
356 write_lock_irqsave(&bp_lock, flags);
357 list_del(&bp->list);
358 write_unlock_irqrestore(&bp_lock, flags);
359}
360EXPORT_SYMBOL(mISDN_unregister_Bprotocol);
361
362static const char *msg_no_channel = "<no channel>";
363static const char *msg_no_stack = "<no stack>";
364static const char *msg_no_stackdev = "<no stack device>";
365
366const char *mISDNDevName4ch(struct mISDNchannel *ch)
367{
368 if (!ch)
369 return msg_no_channel;
370 if (!ch->st)
371 return msg_no_stack;
372 if (!ch->st->dev)
373 return msg_no_stackdev;
374 return dev_name(&ch->st->dev->dev);
375};
376EXPORT_SYMBOL(mISDNDevName4ch);
377
378static int
379mISDNInit(void)
380{
381 int err;
382
383 printk(KERN_INFO "Modular ISDN core version %d.%d.%d\n",
384 MISDN_MAJOR_VERSION, MISDN_MINOR_VERSION, MISDN_RELEASE);
385 mISDN_init_clock(&debug);
386 mISDN_initstack(&debug);
387 err = class_register(&mISDN_class);
388 if (err)
389 goto error1;
390 err = mISDN_inittimer(&debug);
391 if (err)
392 goto error2;
393 err = l1_init(&debug);
394 if (err)
395 goto error3;
396 err = Isdnl2_Init(&debug);
397 if (err)
398 goto error4;
399 err = misdn_sock_init(&debug);
400 if (err)
401 goto error5;
402 return 0;
403
404error5:
405 Isdnl2_cleanup();
406error4:
407 l1_cleanup();
408error3:
409 mISDN_timer_cleanup();
410error2:
411 class_unregister(&mISDN_class);
412error1:
413 return err;
414}
415
416static void mISDN_cleanup(void)
417{
418 misdn_sock_cleanup();
419 Isdnl2_cleanup();
420 l1_cleanup();
421 mISDN_timer_cleanup();
422 class_unregister(&mISDN_class);
423
424 printk(KERN_DEBUG "mISDNcore unloaded\n");
425}
426
427module_init(mISDNInit);
428module_exit(mISDN_cleanup);