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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2003-2008 Takahiro Hirofuchi
4 */
5
6#include <linux/string.h>
7#include <linux/module.h>
8#include <linux/device.h>
9#include <linux/scatterlist.h>
10
11#include "usbip_common.h"
12#include "stub.h"
13
14#define DRIVER_AUTHOR "Takahiro Hirofuchi"
15#define DRIVER_DESC "USB/IP Host Driver"
16
17struct kmem_cache *stub_priv_cache;
18
19/*
20 * busid_tables defines matching busids that usbip can grab. A user can change
21 * dynamically what device is locally used and what device is exported to a
22 * remote host.
23 */
24#define MAX_BUSID 16
25static struct bus_id_priv busid_table[MAX_BUSID];
26static DEFINE_SPINLOCK(busid_table_lock);
27
28static void init_busid_table(void)
29{
30 int i;
31
32 /*
33 * This also sets the bus_table[i].status to
34 * STUB_BUSID_OTHER, which is 0.
35 */
36 memset(busid_table, 0, sizeof(busid_table));
37
38 for (i = 0; i < MAX_BUSID; i++)
39 spin_lock_init(&busid_table[i].busid_lock);
40}
41
42/*
43 * Find the index of the busid by name.
44 * Must be called with busid_table_lock held.
45 */
46static int get_busid_idx(const char *busid)
47{
48 int i;
49 int idx = -1;
50
51 for (i = 0; i < MAX_BUSID; i++) {
52 spin_lock(&busid_table[i].busid_lock);
53 if (busid_table[i].name[0])
54 if (!strncmp(busid_table[i].name, busid, BUSID_SIZE)) {
55 idx = i;
56 spin_unlock(&busid_table[i].busid_lock);
57 break;
58 }
59 spin_unlock(&busid_table[i].busid_lock);
60 }
61 return idx;
62}
63
64/* Returns holding busid_lock. Should call put_busid_priv() to unlock */
65struct bus_id_priv *get_busid_priv(const char *busid)
66{
67 int idx;
68 struct bus_id_priv *bid = NULL;
69
70 spin_lock(&busid_table_lock);
71 idx = get_busid_idx(busid);
72 if (idx >= 0) {
73 bid = &(busid_table[idx]);
74 /* get busid_lock before returning */
75 spin_lock(&bid->busid_lock);
76 }
77 spin_unlock(&busid_table_lock);
78
79 return bid;
80}
81
82void put_busid_priv(struct bus_id_priv *bid)
83{
84 if (bid)
85 spin_unlock(&bid->busid_lock);
86}
87
88static int add_match_busid(char *busid)
89{
90 int i;
91 int ret = -1;
92
93 spin_lock(&busid_table_lock);
94 /* already registered? */
95 if (get_busid_idx(busid) >= 0) {
96 ret = 0;
97 goto out;
98 }
99
100 for (i = 0; i < MAX_BUSID; i++) {
101 spin_lock(&busid_table[i].busid_lock);
102 if (!busid_table[i].name[0]) {
103 strscpy(busid_table[i].name, busid, BUSID_SIZE);
104 if ((busid_table[i].status != STUB_BUSID_ALLOC) &&
105 (busid_table[i].status != STUB_BUSID_REMOV))
106 busid_table[i].status = STUB_BUSID_ADDED;
107 ret = 0;
108 spin_unlock(&busid_table[i].busid_lock);
109 break;
110 }
111 spin_unlock(&busid_table[i].busid_lock);
112 }
113
114out:
115 spin_unlock(&busid_table_lock);
116
117 return ret;
118}
119
120int del_match_busid(char *busid)
121{
122 int idx;
123 int ret = -1;
124
125 spin_lock(&busid_table_lock);
126 idx = get_busid_idx(busid);
127 if (idx < 0)
128 goto out;
129
130 /* found */
131 ret = 0;
132
133 spin_lock(&busid_table[idx].busid_lock);
134
135 if (busid_table[idx].status == STUB_BUSID_OTHER)
136 memset(busid_table[idx].name, 0, BUSID_SIZE);
137
138 if ((busid_table[idx].status != STUB_BUSID_OTHER) &&
139 (busid_table[idx].status != STUB_BUSID_ADDED))
140 busid_table[idx].status = STUB_BUSID_REMOV;
141
142 spin_unlock(&busid_table[idx].busid_lock);
143out:
144 spin_unlock(&busid_table_lock);
145
146 return ret;
147}
148
149static ssize_t match_busid_show(struct device_driver *drv, char *buf)
150{
151 int i;
152 char *out = buf;
153
154 spin_lock(&busid_table_lock);
155 for (i = 0; i < MAX_BUSID; i++) {
156 spin_lock(&busid_table[i].busid_lock);
157 if (busid_table[i].name[0])
158 out += sprintf(out, "%s ", busid_table[i].name);
159 spin_unlock(&busid_table[i].busid_lock);
160 }
161 spin_unlock(&busid_table_lock);
162 out += sprintf(out, "\n");
163
164 return out - buf;
165}
166
167static ssize_t match_busid_store(struct device_driver *dev, const char *buf,
168 size_t count)
169{
170 char busid[BUSID_SIZE];
171
172 if (count < 5)
173 return -EINVAL;
174
175 /* busid needs to include \0 termination */
176 if (strscpy(busid, buf + 4, BUSID_SIZE) < 0)
177 return -EINVAL;
178
179 if (!strncmp(buf, "add ", 4)) {
180 if (add_match_busid(busid) < 0)
181 return -ENOMEM;
182
183 pr_debug("add busid %s\n", busid);
184 return count;
185 }
186
187 if (!strncmp(buf, "del ", 4)) {
188 if (del_match_busid(busid) < 0)
189 return -ENODEV;
190
191 pr_debug("del busid %s\n", busid);
192 return count;
193 }
194
195 return -EINVAL;
196}
197static DRIVER_ATTR_RW(match_busid);
198
199static int do_rebind(char *busid, struct bus_id_priv *busid_priv)
200{
201 int ret = 0;
202
203 /* device_attach() callers should hold parent lock for USB */
204 if (busid_priv->udev->dev.parent)
205 device_lock(busid_priv->udev->dev.parent);
206 ret = device_attach(&busid_priv->udev->dev);
207 if (busid_priv->udev->dev.parent)
208 device_unlock(busid_priv->udev->dev.parent);
209 if (ret < 0)
210 dev_err(&busid_priv->udev->dev, "rebind failed\n");
211 return ret;
212}
213
214static void stub_device_rebind(void)
215{
216#if IS_MODULE(CONFIG_USBIP_HOST)
217 struct bus_id_priv *busid_priv;
218 int i;
219
220 /* update status to STUB_BUSID_OTHER so probe ignores the device */
221 spin_lock(&busid_table_lock);
222 for (i = 0; i < MAX_BUSID; i++) {
223 if (busid_table[i].name[0] &&
224 busid_table[i].shutdown_busid) {
225 busid_priv = &(busid_table[i]);
226 busid_priv->status = STUB_BUSID_OTHER;
227 }
228 }
229 spin_unlock(&busid_table_lock);
230
231 /* now run rebind - no need to hold locks. driver files are removed */
232 for (i = 0; i < MAX_BUSID; i++) {
233 if (busid_table[i].name[0] &&
234 busid_table[i].shutdown_busid) {
235 busid_priv = &(busid_table[i]);
236 do_rebind(busid_table[i].name, busid_priv);
237 }
238 }
239#endif
240}
241
242static ssize_t rebind_store(struct device_driver *dev, const char *buf,
243 size_t count)
244{
245 int ret;
246 int len;
247 struct bus_id_priv *bid;
248
249 /* buf length should be less that BUSID_SIZE */
250 len = strnlen(buf, BUSID_SIZE);
251
252 if (!(len < BUSID_SIZE))
253 return -EINVAL;
254
255 bid = get_busid_priv(buf);
256 if (!bid)
257 return -ENODEV;
258
259 /* mark the device for deletion so probe ignores it during rescan */
260 bid->status = STUB_BUSID_OTHER;
261 /* release the busid lock */
262 put_busid_priv(bid);
263
264 ret = do_rebind((char *) buf, bid);
265 if (ret < 0)
266 return ret;
267
268 /* delete device from busid_table */
269 del_match_busid((char *) buf);
270
271 return count;
272}
273
274static DRIVER_ATTR_WO(rebind);
275
276static struct stub_priv *stub_priv_pop_from_listhead(struct list_head *listhead)
277{
278 struct stub_priv *priv, *tmp;
279
280 list_for_each_entry_safe(priv, tmp, listhead, list) {
281 list_del_init(&priv->list);
282 return priv;
283 }
284
285 return NULL;
286}
287
288void stub_free_priv_and_urb(struct stub_priv *priv)
289{
290 struct urb *urb;
291 int i;
292
293 for (i = 0; i < priv->num_urbs; i++) {
294 urb = priv->urbs[i];
295
296 if (!urb)
297 return;
298
299 kfree(urb->setup_packet);
300 urb->setup_packet = NULL;
301
302
303 if (urb->transfer_buffer && !priv->sgl) {
304 kfree(urb->transfer_buffer);
305 urb->transfer_buffer = NULL;
306 }
307
308 if (urb->num_sgs) {
309 sgl_free(urb->sg);
310 urb->sg = NULL;
311 urb->num_sgs = 0;
312 }
313
314 usb_free_urb(urb);
315 }
316 if (!list_empty(&priv->list))
317 list_del(&priv->list);
318 if (priv->sgl)
319 sgl_free(priv->sgl);
320 kfree(priv->urbs);
321 kmem_cache_free(stub_priv_cache, priv);
322}
323
324static struct stub_priv *stub_priv_pop(struct stub_device *sdev)
325{
326 unsigned long flags;
327 struct stub_priv *priv;
328
329 spin_lock_irqsave(&sdev->priv_lock, flags);
330
331 priv = stub_priv_pop_from_listhead(&sdev->priv_init);
332 if (priv)
333 goto done;
334
335 priv = stub_priv_pop_from_listhead(&sdev->priv_tx);
336 if (priv)
337 goto done;
338
339 priv = stub_priv_pop_from_listhead(&sdev->priv_free);
340
341done:
342 spin_unlock_irqrestore(&sdev->priv_lock, flags);
343
344 return priv;
345}
346
347void stub_device_cleanup_urbs(struct stub_device *sdev)
348{
349 struct stub_priv *priv;
350 int i;
351
352 dev_dbg(&sdev->udev->dev, "Stub device cleaning up urbs\n");
353
354 while ((priv = stub_priv_pop(sdev))) {
355 for (i = 0; i < priv->num_urbs; i++)
356 usb_kill_urb(priv->urbs[i]);
357
358 stub_free_priv_and_urb(priv);
359 }
360}
361
362static int __init usbip_host_init(void)
363{
364 int ret;
365
366 init_busid_table();
367
368 stub_priv_cache = KMEM_CACHE(stub_priv, SLAB_HWCACHE_ALIGN);
369 if (!stub_priv_cache) {
370 pr_err("kmem_cache_create failed\n");
371 return -ENOMEM;
372 }
373
374 ret = usb_register_device_driver(&stub_driver, THIS_MODULE);
375 if (ret) {
376 pr_err("usb_register failed %d\n", ret);
377 goto err_usb_register;
378 }
379
380 ret = driver_create_file(&stub_driver.driver,
381 &driver_attr_match_busid);
382 if (ret) {
383 pr_err("driver_create_file failed\n");
384 goto err_create_file;
385 }
386
387 ret = driver_create_file(&stub_driver.driver,
388 &driver_attr_rebind);
389 if (ret) {
390 pr_err("driver_create_file failed\n");
391 goto err_create_file;
392 }
393
394 return ret;
395
396err_create_file:
397 usb_deregister_device_driver(&stub_driver);
398err_usb_register:
399 kmem_cache_destroy(stub_priv_cache);
400 return ret;
401}
402
403static void __exit usbip_host_exit(void)
404{
405 driver_remove_file(&stub_driver.driver,
406 &driver_attr_match_busid);
407
408 driver_remove_file(&stub_driver.driver,
409 &driver_attr_rebind);
410
411 /*
412 * deregister() calls stub_disconnect() for all devices. Device
413 * specific data is cleared in stub_disconnect().
414 */
415 usb_deregister_device_driver(&stub_driver);
416
417 /* initiate scan to attach devices */
418 stub_device_rebind();
419
420 kmem_cache_destroy(stub_priv_cache);
421}
422
423module_init(usbip_host_init);
424module_exit(usbip_host_exit);
425
426MODULE_AUTHOR(DRIVER_AUTHOR);
427MODULE_DESCRIPTION(DRIVER_DESC);
428MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2003-2008 Takahiro Hirofuchi
4 */
5
6#include <linux/string.h>
7#include <linux/module.h>
8#include <linux/device.h>
9#include <linux/scatterlist.h>
10
11#include "usbip_common.h"
12#include "stub.h"
13
14#define DRIVER_AUTHOR "Takahiro Hirofuchi"
15#define DRIVER_DESC "USB/IP Host Driver"
16
17struct kmem_cache *stub_priv_cache;
18
19/*
20 * busid_tables defines matching busids that usbip can grab. A user can change
21 * dynamically what device is locally used and what device is exported to a
22 * remote host.
23 */
24#define MAX_BUSID 16
25static struct bus_id_priv busid_table[MAX_BUSID];
26static spinlock_t busid_table_lock;
27
28static void init_busid_table(void)
29{
30 int i;
31
32 /*
33 * This also sets the bus_table[i].status to
34 * STUB_BUSID_OTHER, which is 0.
35 */
36 memset(busid_table, 0, sizeof(busid_table));
37
38 spin_lock_init(&busid_table_lock);
39
40 for (i = 0; i < MAX_BUSID; i++)
41 spin_lock_init(&busid_table[i].busid_lock);
42}
43
44/*
45 * Find the index of the busid by name.
46 * Must be called with busid_table_lock held.
47 */
48static int get_busid_idx(const char *busid)
49{
50 int i;
51 int idx = -1;
52
53 for (i = 0; i < MAX_BUSID; i++) {
54 spin_lock(&busid_table[i].busid_lock);
55 if (busid_table[i].name[0])
56 if (!strncmp(busid_table[i].name, busid, BUSID_SIZE)) {
57 idx = i;
58 spin_unlock(&busid_table[i].busid_lock);
59 break;
60 }
61 spin_unlock(&busid_table[i].busid_lock);
62 }
63 return idx;
64}
65
66/* Returns holding busid_lock. Should call put_busid_priv() to unlock */
67struct bus_id_priv *get_busid_priv(const char *busid)
68{
69 int idx;
70 struct bus_id_priv *bid = NULL;
71
72 spin_lock(&busid_table_lock);
73 idx = get_busid_idx(busid);
74 if (idx >= 0) {
75 bid = &(busid_table[idx]);
76 /* get busid_lock before returning */
77 spin_lock(&bid->busid_lock);
78 }
79 spin_unlock(&busid_table_lock);
80
81 return bid;
82}
83
84void put_busid_priv(struct bus_id_priv *bid)
85{
86 if (bid)
87 spin_unlock(&bid->busid_lock);
88}
89
90static int add_match_busid(char *busid)
91{
92 int i;
93 int ret = -1;
94
95 spin_lock(&busid_table_lock);
96 /* already registered? */
97 if (get_busid_idx(busid) >= 0) {
98 ret = 0;
99 goto out;
100 }
101
102 for (i = 0; i < MAX_BUSID; i++) {
103 spin_lock(&busid_table[i].busid_lock);
104 if (!busid_table[i].name[0]) {
105 strlcpy(busid_table[i].name, busid, BUSID_SIZE);
106 if ((busid_table[i].status != STUB_BUSID_ALLOC) &&
107 (busid_table[i].status != STUB_BUSID_REMOV))
108 busid_table[i].status = STUB_BUSID_ADDED;
109 ret = 0;
110 spin_unlock(&busid_table[i].busid_lock);
111 break;
112 }
113 spin_unlock(&busid_table[i].busid_lock);
114 }
115
116out:
117 spin_unlock(&busid_table_lock);
118
119 return ret;
120}
121
122int del_match_busid(char *busid)
123{
124 int idx;
125 int ret = -1;
126
127 spin_lock(&busid_table_lock);
128 idx = get_busid_idx(busid);
129 if (idx < 0)
130 goto out;
131
132 /* found */
133 ret = 0;
134
135 spin_lock(&busid_table[idx].busid_lock);
136
137 if (busid_table[idx].status == STUB_BUSID_OTHER)
138 memset(busid_table[idx].name, 0, BUSID_SIZE);
139
140 if ((busid_table[idx].status != STUB_BUSID_OTHER) &&
141 (busid_table[idx].status != STUB_BUSID_ADDED))
142 busid_table[idx].status = STUB_BUSID_REMOV;
143
144 spin_unlock(&busid_table[idx].busid_lock);
145out:
146 spin_unlock(&busid_table_lock);
147
148 return ret;
149}
150
151static ssize_t match_busid_show(struct device_driver *drv, char *buf)
152{
153 int i;
154 char *out = buf;
155
156 spin_lock(&busid_table_lock);
157 for (i = 0; i < MAX_BUSID; i++) {
158 spin_lock(&busid_table[i].busid_lock);
159 if (busid_table[i].name[0])
160 out += sprintf(out, "%s ", busid_table[i].name);
161 spin_unlock(&busid_table[i].busid_lock);
162 }
163 spin_unlock(&busid_table_lock);
164 out += sprintf(out, "\n");
165
166 return out - buf;
167}
168
169static ssize_t match_busid_store(struct device_driver *dev, const char *buf,
170 size_t count)
171{
172 int len;
173 char busid[BUSID_SIZE];
174
175 if (count < 5)
176 return -EINVAL;
177
178 /* busid needs to include \0 termination */
179 len = strlcpy(busid, buf + 4, BUSID_SIZE);
180 if (sizeof(busid) <= len)
181 return -EINVAL;
182
183 if (!strncmp(buf, "add ", 4)) {
184 if (add_match_busid(busid) < 0)
185 return -ENOMEM;
186
187 pr_debug("add busid %s\n", busid);
188 return count;
189 }
190
191 if (!strncmp(buf, "del ", 4)) {
192 if (del_match_busid(busid) < 0)
193 return -ENODEV;
194
195 pr_debug("del busid %s\n", busid);
196 return count;
197 }
198
199 return -EINVAL;
200}
201static DRIVER_ATTR_RW(match_busid);
202
203static int do_rebind(char *busid, struct bus_id_priv *busid_priv)
204{
205 int ret = 0;
206
207 /* device_attach() callers should hold parent lock for USB */
208 if (busid_priv->udev->dev.parent)
209 device_lock(busid_priv->udev->dev.parent);
210 ret = device_attach(&busid_priv->udev->dev);
211 if (busid_priv->udev->dev.parent)
212 device_unlock(busid_priv->udev->dev.parent);
213 if (ret < 0)
214 dev_err(&busid_priv->udev->dev, "rebind failed\n");
215 return ret;
216}
217
218static void stub_device_rebind(void)
219{
220#if IS_MODULE(CONFIG_USBIP_HOST)
221 struct bus_id_priv *busid_priv;
222 int i;
223
224 /* update status to STUB_BUSID_OTHER so probe ignores the device */
225 spin_lock(&busid_table_lock);
226 for (i = 0; i < MAX_BUSID; i++) {
227 if (busid_table[i].name[0] &&
228 busid_table[i].shutdown_busid) {
229 busid_priv = &(busid_table[i]);
230 busid_priv->status = STUB_BUSID_OTHER;
231 }
232 }
233 spin_unlock(&busid_table_lock);
234
235 /* now run rebind - no need to hold locks. driver files are removed */
236 for (i = 0; i < MAX_BUSID; i++) {
237 if (busid_table[i].name[0] &&
238 busid_table[i].shutdown_busid) {
239 busid_priv = &(busid_table[i]);
240 do_rebind(busid_table[i].name, busid_priv);
241 }
242 }
243#endif
244}
245
246static ssize_t rebind_store(struct device_driver *dev, const char *buf,
247 size_t count)
248{
249 int ret;
250 int len;
251 struct bus_id_priv *bid;
252
253 /* buf length should be less that BUSID_SIZE */
254 len = strnlen(buf, BUSID_SIZE);
255
256 if (!(len < BUSID_SIZE))
257 return -EINVAL;
258
259 bid = get_busid_priv(buf);
260 if (!bid)
261 return -ENODEV;
262
263 /* mark the device for deletion so probe ignores it during rescan */
264 bid->status = STUB_BUSID_OTHER;
265 /* release the busid lock */
266 put_busid_priv(bid);
267
268 ret = do_rebind((char *) buf, bid);
269 if (ret < 0)
270 return ret;
271
272 /* delete device from busid_table */
273 del_match_busid((char *) buf);
274
275 return count;
276}
277
278static DRIVER_ATTR_WO(rebind);
279
280static struct stub_priv *stub_priv_pop_from_listhead(struct list_head *listhead)
281{
282 struct stub_priv *priv, *tmp;
283
284 list_for_each_entry_safe(priv, tmp, listhead, list) {
285 list_del_init(&priv->list);
286 return priv;
287 }
288
289 return NULL;
290}
291
292void stub_free_priv_and_urb(struct stub_priv *priv)
293{
294 struct urb *urb;
295 int i;
296
297 for (i = 0; i < priv->num_urbs; i++) {
298 urb = priv->urbs[i];
299
300 if (!urb)
301 return;
302
303 kfree(urb->setup_packet);
304 urb->setup_packet = NULL;
305
306
307 if (urb->transfer_buffer && !priv->sgl) {
308 kfree(urb->transfer_buffer);
309 urb->transfer_buffer = NULL;
310 }
311
312 if (urb->num_sgs) {
313 sgl_free(urb->sg);
314 urb->sg = NULL;
315 urb->num_sgs = 0;
316 }
317
318 usb_free_urb(urb);
319 }
320 if (!list_empty(&priv->list))
321 list_del(&priv->list);
322 if (priv->sgl)
323 sgl_free(priv->sgl);
324 kfree(priv->urbs);
325 kmem_cache_free(stub_priv_cache, priv);
326}
327
328static struct stub_priv *stub_priv_pop(struct stub_device *sdev)
329{
330 unsigned long flags;
331 struct stub_priv *priv;
332
333 spin_lock_irqsave(&sdev->priv_lock, flags);
334
335 priv = stub_priv_pop_from_listhead(&sdev->priv_init);
336 if (priv)
337 goto done;
338
339 priv = stub_priv_pop_from_listhead(&sdev->priv_tx);
340 if (priv)
341 goto done;
342
343 priv = stub_priv_pop_from_listhead(&sdev->priv_free);
344
345done:
346 spin_unlock_irqrestore(&sdev->priv_lock, flags);
347
348 return priv;
349}
350
351void stub_device_cleanup_urbs(struct stub_device *sdev)
352{
353 struct stub_priv *priv;
354 int i;
355
356 dev_dbg(&sdev->udev->dev, "Stub device cleaning up urbs\n");
357
358 while ((priv = stub_priv_pop(sdev))) {
359 for (i = 0; i < priv->num_urbs; i++)
360 usb_kill_urb(priv->urbs[i]);
361
362 stub_free_priv_and_urb(priv);
363 }
364}
365
366static int __init usbip_host_init(void)
367{
368 int ret;
369
370 init_busid_table();
371
372 stub_priv_cache = KMEM_CACHE(stub_priv, SLAB_HWCACHE_ALIGN);
373 if (!stub_priv_cache) {
374 pr_err("kmem_cache_create failed\n");
375 return -ENOMEM;
376 }
377
378 ret = usb_register_device_driver(&stub_driver, THIS_MODULE);
379 if (ret) {
380 pr_err("usb_register failed %d\n", ret);
381 goto err_usb_register;
382 }
383
384 ret = driver_create_file(&stub_driver.drvwrap.driver,
385 &driver_attr_match_busid);
386 if (ret) {
387 pr_err("driver_create_file failed\n");
388 goto err_create_file;
389 }
390
391 ret = driver_create_file(&stub_driver.drvwrap.driver,
392 &driver_attr_rebind);
393 if (ret) {
394 pr_err("driver_create_file failed\n");
395 goto err_create_file;
396 }
397
398 return ret;
399
400err_create_file:
401 usb_deregister_device_driver(&stub_driver);
402err_usb_register:
403 kmem_cache_destroy(stub_priv_cache);
404 return ret;
405}
406
407static void __exit usbip_host_exit(void)
408{
409 driver_remove_file(&stub_driver.drvwrap.driver,
410 &driver_attr_match_busid);
411
412 driver_remove_file(&stub_driver.drvwrap.driver,
413 &driver_attr_rebind);
414
415 /*
416 * deregister() calls stub_disconnect() for all devices. Device
417 * specific data is cleared in stub_disconnect().
418 */
419 usb_deregister_device_driver(&stub_driver);
420
421 /* initiate scan to attach devices */
422 stub_device_rebind();
423
424 kmem_cache_destroy(stub_priv_cache);
425}
426
427module_init(usbip_host_init);
428module_exit(usbip_host_exit);
429
430MODULE_AUTHOR(DRIVER_AUTHOR);
431MODULE_DESCRIPTION(DRIVER_DESC);
432MODULE_LICENSE("GPL");