Commit | Line | Data |
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2a36d708 AB |
1 | /* |
2 | * MosChips MCS7830 based USB 2.0 Ethernet Devices | |
3 | * | |
4 | * based on usbnet.c, asix.c and the vendor provided mcs7830 driver | |
5 | * | |
6 | * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de> | |
7 | * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com> | |
8 | * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net> | |
9 | * Copyright (c) 2002-2003 TiVo Inc. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <linux/crc32.h> | |
27 | #include <linux/etherdevice.h> | |
28 | #include <linux/ethtool.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/mii.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/netdevice.h> | |
33 | #include <linux/usb.h> | |
3692e94f | 34 | #include <linux/usb/usbnet.h> |
2a36d708 AB |
35 | |
36 | /* requests */ | |
37 | #define MCS7830_RD_BMREQ (USB_DIR_IN | USB_TYPE_VENDOR | \ | |
38 | USB_RECIP_DEVICE) | |
39 | #define MCS7830_WR_BMREQ (USB_DIR_OUT | USB_TYPE_VENDOR | \ | |
40 | USB_RECIP_DEVICE) | |
41 | #define MCS7830_RD_BREQ 0x0E | |
42 | #define MCS7830_WR_BREQ 0x0D | |
43 | ||
44 | #define MCS7830_CTRL_TIMEOUT 1000 | |
45 | #define MCS7830_MAX_MCAST 64 | |
46 | ||
47 | #define MCS7830_VENDOR_ID 0x9710 | |
48 | #define MCS7830_PRODUCT_ID 0x7830 | |
49 | ||
50 | #define MCS7830_MII_ADVERTISE (ADVERTISE_PAUSE_CAP | ADVERTISE_100FULL | \ | |
51 | ADVERTISE_100HALF | ADVERTISE_10FULL | \ | |
52 | ADVERTISE_10HALF | ADVERTISE_CSMA) | |
53 | ||
54 | /* HIF_REG_XX coressponding index value */ | |
55 | enum { | |
56 | HIF_REG_MULTICAST_HASH = 0x00, | |
57 | HIF_REG_PACKET_GAP1 = 0x08, | |
58 | HIF_REG_PACKET_GAP2 = 0x09, | |
59 | HIF_REG_PHY_DATA = 0x0a, | |
60 | HIF_REG_PHY_CMD1 = 0x0c, | |
61 | HIF_REG_PHY_CMD1_READ = 0x40, | |
62 | HIF_REG_PHY_CMD1_WRITE = 0x20, | |
63 | HIF_REG_PHY_CMD1_PHYADDR = 0x01, | |
64 | HIF_REG_PHY_CMD2 = 0x0d, | |
65 | HIF_REG_PHY_CMD2_PEND_FLAG_BIT = 0x80, | |
66 | HIF_REG_PHY_CMD2_READY_FLAG_BIT = 0x40, | |
67 | HIF_REG_CONFIG = 0x0e, | |
68 | HIF_REG_CONFIG_CFG = 0x80, | |
69 | HIF_REG_CONFIG_SPEED100 = 0x40, | |
70 | HIF_REG_CONFIG_FULLDUPLEX_ENABLE = 0x20, | |
71 | HIF_REG_CONFIG_RXENABLE = 0x10, | |
72 | HIF_REG_CONFIG_TXENABLE = 0x08, | |
73 | HIF_REG_CONFIG_SLEEPMODE = 0x04, | |
74 | HIF_REG_CONFIG_ALLMULTICAST = 0x02, | |
75 | HIF_REG_CONFIG_PROMISCIOUS = 0x01, | |
76 | HIF_REG_ETHERNET_ADDR = 0x0f, | |
77 | HIF_REG_22 = 0x15, | |
78 | HIF_REG_PAUSE_THRESHOLD = 0x16, | |
79 | HIF_REG_PAUSE_THRESHOLD_DEFAULT = 0, | |
80 | }; | |
81 | ||
82 | struct mcs7830_data { | |
83 | u8 multi_filter[8]; | |
84 | u8 config; | |
85 | }; | |
86 | ||
87 | static const char driver_name[] = "MOSCHIP usb-ethernet driver"; | |
88 | ||
89 | static int mcs7830_get_reg(struct usbnet *dev, u16 index, u16 size, void *data) | |
90 | { | |
91 | struct usb_device *xdev = dev->udev; | |
92 | int ret; | |
93 | ||
94 | ret = usb_control_msg(xdev, usb_rcvctrlpipe(xdev, 0), MCS7830_RD_BREQ, | |
95 | MCS7830_RD_BMREQ, 0x0000, index, data, | |
1d39da3d | 96 | size, MCS7830_CTRL_TIMEOUT); |
2a36d708 AB |
97 | return ret; |
98 | } | |
99 | ||
100 | static int mcs7830_set_reg(struct usbnet *dev, u16 index, u16 size, void *data) | |
101 | { | |
102 | struct usb_device *xdev = dev->udev; | |
103 | int ret; | |
104 | ||
105 | ret = usb_control_msg(xdev, usb_sndctrlpipe(xdev, 0), MCS7830_WR_BREQ, | |
106 | MCS7830_WR_BMREQ, 0x0000, index, data, | |
1d39da3d | 107 | size, MCS7830_CTRL_TIMEOUT); |
2a36d708 AB |
108 | return ret; |
109 | } | |
110 | ||
111 | static void mcs7830_async_cmd_callback(struct urb *urb) | |
112 | { | |
113 | struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; | |
114 | ||
115 | if (urb->status < 0) | |
898eb71c JP |
116 | printk(KERN_DEBUG "%s() failed with %d\n", |
117 | __FUNCTION__, urb->status); | |
2a36d708 AB |
118 | |
119 | kfree(req); | |
120 | usb_free_urb(urb); | |
121 | } | |
122 | ||
123 | static void mcs7830_set_reg_async(struct usbnet *dev, u16 index, u16 size, void *data) | |
124 | { | |
125 | struct usb_ctrlrequest *req; | |
126 | int ret; | |
127 | struct urb *urb; | |
128 | ||
129 | urb = usb_alloc_urb(0, GFP_ATOMIC); | |
130 | if (!urb) { | |
898eb71c JP |
131 | dev_dbg(&dev->udev->dev, |
132 | "Error allocating URB in write_cmd_async!\n"); | |
2a36d708 AB |
133 | return; |
134 | } | |
135 | ||
136 | req = kmalloc(sizeof *req, GFP_ATOMIC); | |
137 | if (!req) { | |
898eb71c JP |
138 | dev_err(&dev->udev->dev, |
139 | "Failed to allocate memory for control request\n"); | |
2a36d708 AB |
140 | goto out; |
141 | } | |
142 | req->bRequestType = MCS7830_WR_BMREQ; | |
143 | req->bRequest = MCS7830_WR_BREQ; | |
144 | req->wValue = 0; | |
145 | req->wIndex = cpu_to_le16(index); | |
146 | req->wLength = cpu_to_le16(size); | |
147 | ||
148 | usb_fill_control_urb(urb, dev->udev, | |
149 | usb_sndctrlpipe(dev->udev, 0), | |
150 | (void *)req, data, size, | |
151 | mcs7830_async_cmd_callback, req); | |
152 | ||
153 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
154 | if (ret < 0) { | |
898eb71c JP |
155 | dev_err(&dev->udev->dev, |
156 | "Error submitting the control message: ret=%d\n", ret); | |
2a36d708 AB |
157 | goto out; |
158 | } | |
159 | return; | |
160 | out: | |
161 | kfree(req); | |
162 | usb_free_urb(urb); | |
163 | } | |
164 | ||
165 | static int mcs7830_get_address(struct usbnet *dev) | |
166 | { | |
167 | int ret; | |
168 | ret = mcs7830_get_reg(dev, HIF_REG_ETHERNET_ADDR, ETH_ALEN, | |
169 | dev->net->dev_addr); | |
170 | if (ret < 0) | |
171 | return ret; | |
172 | return 0; | |
173 | } | |
174 | ||
175 | static int mcs7830_read_phy(struct usbnet *dev, u8 index) | |
176 | { | |
177 | int ret; | |
178 | int i; | |
179 | __le16 val; | |
180 | ||
181 | u8 cmd[2] = { | |
182 | HIF_REG_PHY_CMD1_READ | HIF_REG_PHY_CMD1_PHYADDR, | |
183 | HIF_REG_PHY_CMD2_PEND_FLAG_BIT | index, | |
184 | }; | |
185 | ||
a9fc6338 | 186 | mutex_lock(&dev->phy_mutex); |
2a36d708 AB |
187 | /* write the MII command */ |
188 | ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); | |
189 | if (ret < 0) | |
190 | goto out; | |
191 | ||
192 | /* wait for the data to become valid, should be within < 1ms */ | |
193 | for (i = 0; i < 10; i++) { | |
194 | ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); | |
195 | if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) | |
196 | break; | |
197 | ret = -EIO; | |
198 | msleep(1); | |
199 | } | |
200 | if (ret < 0) | |
201 | goto out; | |
202 | ||
203 | /* read actual register contents */ | |
204 | ret = mcs7830_get_reg(dev, HIF_REG_PHY_DATA, 2, &val); | |
205 | if (ret < 0) | |
206 | goto out; | |
207 | ret = le16_to_cpu(val); | |
208 | dev_dbg(&dev->udev->dev, "read PHY reg %02x: %04x (%d tries)\n", | |
209 | index, val, i); | |
210 | out: | |
a9fc6338 | 211 | mutex_unlock(&dev->phy_mutex); |
2a36d708 AB |
212 | return ret; |
213 | } | |
214 | ||
215 | static int mcs7830_write_phy(struct usbnet *dev, u8 index, u16 val) | |
216 | { | |
217 | int ret; | |
218 | int i; | |
219 | __le16 le_val; | |
220 | ||
221 | u8 cmd[2] = { | |
222 | HIF_REG_PHY_CMD1_WRITE | HIF_REG_PHY_CMD1_PHYADDR, | |
223 | HIF_REG_PHY_CMD2_PEND_FLAG_BIT | (index & 0x1F), | |
224 | }; | |
225 | ||
a9fc6338 AB |
226 | mutex_lock(&dev->phy_mutex); |
227 | ||
2a36d708 AB |
228 | /* write the new register contents */ |
229 | le_val = cpu_to_le16(val); | |
230 | ret = mcs7830_set_reg(dev, HIF_REG_PHY_DATA, 2, &le_val); | |
231 | if (ret < 0) | |
232 | goto out; | |
233 | ||
234 | /* write the MII command */ | |
235 | ret = mcs7830_set_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); | |
236 | if (ret < 0) | |
237 | goto out; | |
238 | ||
239 | /* wait for the command to be accepted by the PHY */ | |
240 | for (i = 0; i < 10; i++) { | |
241 | ret = mcs7830_get_reg(dev, HIF_REG_PHY_CMD1, 2, cmd); | |
242 | if ((ret < 0) || (cmd[1] & HIF_REG_PHY_CMD2_READY_FLAG_BIT)) | |
243 | break; | |
244 | ret = -EIO; | |
245 | msleep(1); | |
246 | } | |
247 | if (ret < 0) | |
248 | goto out; | |
249 | ||
250 | ret = 0; | |
251 | dev_dbg(&dev->udev->dev, "write PHY reg %02x: %04x (%d tries)\n", | |
252 | index, val, i); | |
253 | out: | |
a9fc6338 | 254 | mutex_unlock(&dev->phy_mutex); |
2a36d708 AB |
255 | return ret; |
256 | } | |
257 | ||
258 | /* | |
259 | * This algorithm comes from the original mcs7830 version 1.4 driver, | |
260 | * not sure if it is needed. | |
261 | */ | |
262 | static int mcs7830_set_autoneg(struct usbnet *dev, int ptrUserPhyMode) | |
263 | { | |
264 | int ret; | |
265 | /* Enable all media types */ | |
266 | ret = mcs7830_write_phy(dev, MII_ADVERTISE, MCS7830_MII_ADVERTISE); | |
267 | ||
268 | /* First reset BMCR */ | |
269 | if (!ret) | |
270 | ret = mcs7830_write_phy(dev, MII_BMCR, 0x0000); | |
271 | /* Enable Auto Neg */ | |
272 | if (!ret) | |
273 | ret = mcs7830_write_phy(dev, MII_BMCR, BMCR_ANENABLE); | |
274 | /* Restart Auto Neg (Keep the Enable Auto Neg Bit Set) */ | |
275 | if (!ret) | |
276 | ret = mcs7830_write_phy(dev, MII_BMCR, | |
277 | BMCR_ANENABLE | BMCR_ANRESTART ); | |
278 | return ret < 0 ? : 0; | |
279 | } | |
280 | ||
281 | ||
282 | /* | |
283 | * if we can read register 22, the chip revision is C or higher | |
284 | */ | |
285 | static int mcs7830_get_rev(struct usbnet *dev) | |
286 | { | |
287 | u8 dummy[2]; | |
288 | int ret; | |
289 | ret = mcs7830_get_reg(dev, HIF_REG_22, 2, dummy); | |
290 | if (ret > 0) | |
291 | return 2; /* Rev C or later */ | |
292 | return 1; /* earlier revision */ | |
293 | } | |
294 | ||
295 | /* | |
296 | * On rev. C we need to set the pause threshold | |
297 | */ | |
298 | static void mcs7830_rev_C_fixup(struct usbnet *dev) | |
299 | { | |
300 | u8 pause_threshold = HIF_REG_PAUSE_THRESHOLD_DEFAULT; | |
301 | int retry; | |
302 | ||
303 | for (retry = 0; retry < 2; retry++) { | |
304 | if (mcs7830_get_rev(dev) == 2) { | |
305 | dev_info(&dev->udev->dev, "applying rev.C fixup\n"); | |
306 | mcs7830_set_reg(dev, HIF_REG_PAUSE_THRESHOLD, | |
307 | 1, &pause_threshold); | |
308 | } | |
309 | msleep(1); | |
310 | } | |
311 | } | |
312 | ||
313 | static int mcs7830_init_dev(struct usbnet *dev) | |
314 | { | |
315 | int ret; | |
316 | int retry; | |
317 | ||
318 | /* Read MAC address from EEPROM */ | |
319 | ret = -EINVAL; | |
320 | for (retry = 0; retry < 5 && ret; retry++) | |
321 | ret = mcs7830_get_address(dev); | |
322 | if (ret) { | |
323 | dev_warn(&dev->udev->dev, "Cannot read MAC address\n"); | |
324 | goto out; | |
325 | } | |
326 | ||
327 | /* Set up PHY */ | |
328 | ret = mcs7830_set_autoneg(dev, 0); | |
329 | if (ret) { | |
330 | dev_info(&dev->udev->dev, "Cannot set autoneg\n"); | |
331 | goto out; | |
332 | } | |
333 | ||
334 | mcs7830_rev_C_fixup(dev); | |
335 | ret = 0; | |
336 | out: | |
337 | return ret; | |
338 | } | |
339 | ||
340 | static int mcs7830_mdio_read(struct net_device *netdev, int phy_id, | |
341 | int location) | |
342 | { | |
343 | struct usbnet *dev = netdev->priv; | |
344 | return mcs7830_read_phy(dev, location); | |
345 | } | |
346 | ||
347 | static void mcs7830_mdio_write(struct net_device *netdev, int phy_id, | |
348 | int location, int val) | |
349 | { | |
350 | struct usbnet *dev = netdev->priv; | |
351 | mcs7830_write_phy(dev, location, val); | |
352 | } | |
353 | ||
354 | static int mcs7830_ioctl(struct net_device *net, struct ifreq *rq, int cmd) | |
355 | { | |
356 | struct usbnet *dev = netdev_priv(net); | |
357 | return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); | |
358 | } | |
359 | ||
360 | /* credits go to asix_set_multicast */ | |
361 | static void mcs7830_set_multicast(struct net_device *net) | |
362 | { | |
363 | struct usbnet *dev = netdev_priv(net); | |
364 | struct mcs7830_data *data = (struct mcs7830_data *)&dev->data; | |
365 | ||
366 | data->config = HIF_REG_CONFIG_TXENABLE; | |
367 | ||
368 | /* this should not be needed, but it doesn't work otherwise */ | |
369 | data->config |= HIF_REG_CONFIG_ALLMULTICAST; | |
370 | ||
371 | if (net->flags & IFF_PROMISC) { | |
372 | data->config |= HIF_REG_CONFIG_PROMISCIOUS; | |
373 | } else if (net->flags & IFF_ALLMULTI | |
374 | || net->mc_count > MCS7830_MAX_MCAST) { | |
375 | data->config |= HIF_REG_CONFIG_ALLMULTICAST; | |
376 | } else if (net->mc_count == 0) { | |
377 | /* just broadcast and directed */ | |
378 | } else { | |
379 | /* We use the 20 byte dev->data | |
380 | * for our 8 byte filter buffer | |
381 | * to avoid allocating memory that | |
382 | * is tricky to free later */ | |
383 | struct dev_mc_list *mc_list = net->mc_list; | |
384 | u32 crc_bits; | |
385 | int i; | |
386 | ||
387 | memset(data->multi_filter, 0, sizeof data->multi_filter); | |
388 | ||
389 | /* Build the multicast hash filter. */ | |
390 | for (i = 0; i < net->mc_count; i++) { | |
391 | crc_bits = ether_crc(ETH_ALEN, mc_list->dmi_addr) >> 26; | |
392 | data->multi_filter[crc_bits >> 3] |= 1 << (crc_bits & 7); | |
393 | mc_list = mc_list->next; | |
394 | } | |
395 | ||
396 | mcs7830_set_reg_async(dev, HIF_REG_MULTICAST_HASH, | |
397 | sizeof data->multi_filter, | |
398 | data->multi_filter); | |
399 | } | |
400 | ||
401 | mcs7830_set_reg_async(dev, HIF_REG_CONFIG, 1, &data->config); | |
402 | } | |
403 | ||
404 | static int mcs7830_get_regs_len(struct net_device *net) | |
405 | { | |
406 | struct usbnet *dev = netdev_priv(net); | |
407 | ||
408 | switch (mcs7830_get_rev(dev)) { | |
409 | case 1: | |
410 | return 21; | |
411 | case 2: | |
412 | return 32; | |
413 | } | |
414 | return 0; | |
415 | } | |
416 | ||
417 | static void mcs7830_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *drvinfo) | |
418 | { | |
419 | usbnet_get_drvinfo(net, drvinfo); | |
420 | drvinfo->regdump_len = mcs7830_get_regs_len(net); | |
421 | } | |
422 | ||
423 | static void mcs7830_get_regs(struct net_device *net, struct ethtool_regs *regs, void *data) | |
424 | { | |
425 | struct usbnet *dev = netdev_priv(net); | |
426 | ||
427 | regs->version = mcs7830_get_rev(dev); | |
428 | mcs7830_get_reg(dev, 0, regs->len, data); | |
429 | } | |
430 | ||
431 | static struct ethtool_ops mcs7830_ethtool_ops = { | |
432 | .get_drvinfo = mcs7830_get_drvinfo, | |
433 | .get_regs_len = mcs7830_get_regs_len, | |
434 | .get_regs = mcs7830_get_regs, | |
435 | ||
436 | /* common usbnet calls */ | |
c41286fd | 437 | .get_link = usbnet_get_link, |
2a36d708 AB |
438 | .get_msglevel = usbnet_get_msglevel, |
439 | .set_msglevel = usbnet_set_msglevel, | |
c41286fd AB |
440 | .get_settings = usbnet_get_settings, |
441 | .set_settings = usbnet_set_settings, | |
442 | .nway_reset = usbnet_nway_reset, | |
2a36d708 AB |
443 | }; |
444 | ||
445 | static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev) | |
446 | { | |
447 | struct net_device *net = dev->net; | |
448 | int ret; | |
449 | ||
450 | ret = mcs7830_init_dev(dev); | |
451 | if (ret) | |
452 | goto out; | |
453 | ||
454 | net->do_ioctl = mcs7830_ioctl; | |
455 | net->ethtool_ops = &mcs7830_ethtool_ops; | |
456 | net->set_multicast_list = mcs7830_set_multicast; | |
457 | mcs7830_set_multicast(net); | |
458 | ||
459 | /* reserve space for the status byte on rx */ | |
460 | dev->rx_urb_size = ETH_FRAME_LEN + 1; | |
461 | ||
462 | dev->mii.mdio_read = mcs7830_mdio_read; | |
463 | dev->mii.mdio_write = mcs7830_mdio_write; | |
464 | dev->mii.dev = net; | |
465 | dev->mii.phy_id_mask = 0x3f; | |
466 | dev->mii.reg_num_mask = 0x1f; | |
467 | dev->mii.phy_id = *((u8 *) net->dev_addr + 1); | |
468 | ||
469 | ret = usbnet_get_endpoints(dev, udev); | |
470 | out: | |
471 | return ret; | |
472 | } | |
473 | ||
474 | /* The chip always appends a status bytes that we need to strip */ | |
475 | static int mcs7830_rx_fixup(struct usbnet *dev, struct sk_buff *skb) | |
476 | { | |
477 | u8 status; | |
478 | ||
479 | if (skb->len == 0) { | |
480 | dev_err(&dev->udev->dev, "unexpected empty rx frame\n"); | |
481 | return 0; | |
482 | } | |
483 | ||
484 | skb_trim(skb, skb->len - 1); | |
485 | status = skb->data[skb->len]; | |
486 | ||
487 | if (status != 0x20) | |
488 | dev_dbg(&dev->udev->dev, "rx fixup status %x\n", status); | |
489 | ||
490 | return skb->len > 0; | |
491 | } | |
492 | ||
493 | static const struct driver_info moschip_info = { | |
494 | .description = "MOSCHIP 7830 usb-NET adapter", | |
495 | .bind = mcs7830_bind, | |
496 | .rx_fixup = mcs7830_rx_fixup, | |
497 | .flags = FLAG_ETHER, | |
498 | .in = 1, | |
499 | .out = 2, | |
500 | }; | |
501 | ||
502 | static const struct usb_device_id products[] = { | |
503 | { | |
504 | USB_DEVICE(MCS7830_VENDOR_ID, MCS7830_PRODUCT_ID), | |
505 | .driver_info = (unsigned long) &moschip_info, | |
506 | }, | |
507 | {}, | |
508 | }; | |
509 | MODULE_DEVICE_TABLE(usb, products); | |
510 | ||
511 | static struct usb_driver mcs7830_driver = { | |
512 | .name = driver_name, | |
513 | .id_table = products, | |
514 | .probe = usbnet_probe, | |
515 | .disconnect = usbnet_disconnect, | |
516 | .suspend = usbnet_suspend, | |
517 | .resume = usbnet_resume, | |
518 | }; | |
519 | ||
520 | static int __init mcs7830_init(void) | |
521 | { | |
522 | return usb_register(&mcs7830_driver); | |
523 | } | |
524 | module_init(mcs7830_init); | |
525 | ||
526 | static void __exit mcs7830_exit(void) | |
527 | { | |
528 | usb_deregister(&mcs7830_driver); | |
529 | } | |
530 | module_exit(mcs7830_exit); | |
531 | ||
532 | MODULE_DESCRIPTION("USB to network adapter MCS7830)"); | |
533 | MODULE_LICENSE("GPL"); |