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1/*
2 * linux/drivers/mmc/core/sdio_cis.c
3 *
4 * Author: Nicolas Pitre
5 * Created: June 11, 2007
6 * Copyright: MontaVista Software Inc.
7 *
8 * Copyright 2007 Pierre Ossman
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or (at
13 * your option) any later version.
14 */
15
16#include <linux/kernel.h>
17#include <linux/slab.h>
18
19#include <linux/mmc/host.h>
20#include <linux/mmc/card.h>
21#include <linux/mmc/sdio.h>
22#include <linux/mmc/sdio_func.h>
23
24#include "sdio_cis.h"
25#include "sdio_ops.h"
26
27static int cistpl_vers_1(struct mmc_card *card, struct sdio_func *func,
28 const unsigned char *buf, unsigned size)
29{
30 unsigned i, nr_strings;
31 char **buffer, *string;
32
33 /* Find all null-terminated (including zero length) strings in
34 the TPLLV1_INFO field. Trailing garbage is ignored. */
35 buf += 2;
36 size -= 2;
37
38 nr_strings = 0;
39 for (i = 0; i < size; i++) {
40 if (buf[i] == 0xff)
41 break;
42 if (buf[i] == 0)
43 nr_strings++;
44 }
45 if (nr_strings == 0)
46 return 0;
47
48 size = i;
49
50 buffer = kzalloc(sizeof(char*) * nr_strings + size, GFP_KERNEL);
51 if (!buffer)
52 return -ENOMEM;
53
54 string = (char*)(buffer + nr_strings);
55
56 for (i = 0; i < nr_strings; i++) {
57 buffer[i] = string;
58 strcpy(string, buf);
59 string += strlen(string) + 1;
60 buf += strlen(buf) + 1;
61 }
62
63 if (func) {
64 func->num_info = nr_strings;
65 func->info = (const char**)buffer;
66 } else {
67 card->num_info = nr_strings;
68 card->info = (const char**)buffer;
69 }
70
71 return 0;
72}
73
74static int cistpl_manfid(struct mmc_card *card, struct sdio_func *func,
75 const unsigned char *buf, unsigned size)
76{
77 unsigned int vendor, device;
78
79 /* TPLMID_MANF */
80 vendor = buf[0] | (buf[1] << 8);
81
82 /* TPLMID_CARD */
83 device = buf[2] | (buf[3] << 8);
84
85 if (func) {
86 func->vendor = vendor;
87 func->device = device;
88 } else {
89 card->cis.vendor = vendor;
90 card->cis.device = device;
91 }
92
93 return 0;
94}
95
96static const unsigned char speed_val[16] =
97 { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 };
98static const unsigned int speed_unit[8] =
99 { 10000, 100000, 1000000, 10000000, 0, 0, 0, 0 };
100
101
102typedef int (tpl_parse_t)(struct mmc_card *, struct sdio_func *,
103 const unsigned char *, unsigned);
104
105struct cis_tpl {
106 unsigned char code;
107 unsigned char min_size;
108 tpl_parse_t *parse;
109};
110
111static int cis_tpl_parse(struct mmc_card *card, struct sdio_func *func,
112 const char *tpl_descr,
113 const struct cis_tpl *tpl, int tpl_count,
114 unsigned char code,
115 const unsigned char *buf, unsigned size)
116{
117 int i, ret;
118
119 /* look for a matching code in the table */
120 for (i = 0; i < tpl_count; i++, tpl++) {
121 if (tpl->code == code)
122 break;
123 }
124 if (i < tpl_count) {
125 if (size >= tpl->min_size) {
126 if (tpl->parse)
127 ret = tpl->parse(card, func, buf, size);
128 else
129 ret = -EILSEQ; /* known tuple, not parsed */
130 } else {
131 /* invalid tuple */
132 ret = -EINVAL;
133 }
134 if (ret && ret != -EILSEQ && ret != -ENOENT) {
135 pr_err("%s: bad %s tuple 0x%02x (%u bytes)\n",
136 mmc_hostname(card->host), tpl_descr, code, size);
137 }
138 } else {
139 /* unknown tuple */
140 ret = -ENOENT;
141 }
142
143 return ret;
144}
145
146static int cistpl_funce_common(struct mmc_card *card, struct sdio_func *func,
147 const unsigned char *buf, unsigned size)
148{
149 /* Only valid for the common CIS (function 0) */
150 if (func)
151 return -EINVAL;
152
153 /* TPLFE_FN0_BLK_SIZE */
154 card->cis.blksize = buf[1] | (buf[2] << 8);
155
156 /* TPLFE_MAX_TRAN_SPEED */
157 card->cis.max_dtr = speed_val[(buf[3] >> 3) & 15] *
158 speed_unit[buf[3] & 7];
159
160 return 0;
161}
162
163static int cistpl_funce_func(struct mmc_card *card, struct sdio_func *func,
164 const unsigned char *buf, unsigned size)
165{
166 unsigned vsn;
167 unsigned min_size;
168
169 /* Only valid for the individual function's CIS (1-7) */
170 if (!func)
171 return -EINVAL;
172
173 /*
174 * This tuple has a different length depending on the SDIO spec
175 * version.
176 */
177 vsn = func->card->cccr.sdio_vsn;
178 min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
179
180 if (size < min_size)
181 return -EINVAL;
182
183 /* TPLFE_MAX_BLK_SIZE */
184 func->max_blksize = buf[12] | (buf[13] << 8);
185
186 /* TPLFE_ENABLE_TIMEOUT_VAL, present in ver 1.1 and above */
187 if (vsn > SDIO_SDIO_REV_1_00)
188 func->enable_timeout = (buf[28] | (buf[29] << 8)) * 10;
189 else
190 func->enable_timeout = jiffies_to_msecs(HZ);
191
192 return 0;
193}
194
195/*
196 * Known TPLFE_TYPEs table for CISTPL_FUNCE tuples.
197 *
198 * Note that, unlike PCMCIA, CISTPL_FUNCE tuples are not parsed depending
199 * on the TPLFID_FUNCTION value of the previous CISTPL_FUNCID as on SDIO
200 * TPLFID_FUNCTION is always hardcoded to 0x0C.
201 */
202static const struct cis_tpl cis_tpl_funce_list[] = {
203 { 0x00, 4, cistpl_funce_common },
204 { 0x01, 0, cistpl_funce_func },
205 { 0x04, 1+1+6, /* CISTPL_FUNCE_LAN_NODE_ID */ },
206};
207
208static int cistpl_funce(struct mmc_card *card, struct sdio_func *func,
209 const unsigned char *buf, unsigned size)
210{
211 if (size < 1)
212 return -EINVAL;
213
214 return cis_tpl_parse(card, func, "CISTPL_FUNCE",
215 cis_tpl_funce_list,
216 ARRAY_SIZE(cis_tpl_funce_list),
217 buf[0], buf, size);
218}
219
220/* Known TPL_CODEs table for CIS tuples */
221static const struct cis_tpl cis_tpl_list[] = {
222 { 0x15, 3, cistpl_vers_1 },
223 { 0x20, 4, cistpl_manfid },
224 { 0x21, 2, /* cistpl_funcid */ },
225 { 0x22, 0, cistpl_funce },
226 { 0x91, 2, /* cistpl_sdio_std */ },
227};
228
229static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
230{
231 int ret;
232 struct sdio_func_tuple *this, **prev;
233 unsigned i, ptr = 0;
234
235 /*
236 * Note that this works for the common CIS (function number 0) as
237 * well as a function's CIS * since SDIO_CCCR_CIS and SDIO_FBR_CIS
238 * have the same offset.
239 */
240 for (i = 0; i < 3; i++) {
241 unsigned char x, fn;
242
243 if (func)
244 fn = func->num;
245 else
246 fn = 0;
247
248 ret = mmc_io_rw_direct(card, 0, 0,
249 SDIO_FBR_BASE(fn) + SDIO_FBR_CIS + i, 0, &x);
250 if (ret)
251 return ret;
252 ptr |= x << (i * 8);
253 }
254
255 if (func)
256 prev = &func->tuples;
257 else
258 prev = &card->tuples;
259
260 BUG_ON(*prev);
261
262 do {
263 unsigned char tpl_code, tpl_link;
264
265 ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
266 if (ret)
267 break;
268
269 /* 0xff means we're done */
270 if (tpl_code == 0xff)
271 break;
272
273 /* null entries have no link field or data */
274 if (tpl_code == 0x00)
275 continue;
276
277 ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
278 if (ret)
279 break;
280
281 /* a size of 0xff also means we're done */
282 if (tpl_link == 0xff)
283 break;
284
285 this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
286 if (!this)
287 return -ENOMEM;
288
289 for (i = 0; i < tpl_link; i++) {
290 ret = mmc_io_rw_direct(card, 0, 0,
291 ptr + i, 0, &this->data[i]);
292 if (ret)
293 break;
294 }
295 if (ret) {
296 kfree(this);
297 break;
298 }
299
300 /* Try to parse the CIS tuple */
301 ret = cis_tpl_parse(card, func, "CIS",
302 cis_tpl_list, ARRAY_SIZE(cis_tpl_list),
303 tpl_code, this->data, tpl_link);
304 if (ret == -EILSEQ || ret == -ENOENT) {
305 /*
306 * The tuple is unknown or known but not parsed.
307 * Queue the tuple for the function driver.
308 */
309 this->next = NULL;
310 this->code = tpl_code;
311 this->size = tpl_link;
312 *prev = this;
313 prev = &this->next;
314
315 if (ret == -ENOENT) {
316 /* warn about unknown tuples */
317 pr_warn_ratelimited("%s: queuing unknown"
318 " CIS tuple 0x%02x (%u bytes)\n",
319 mmc_hostname(card->host),
320 tpl_code, tpl_link);
321 }
322
323 /* keep on analyzing tuples */
324 ret = 0;
325 } else {
326 /*
327 * We don't need the tuple anymore if it was
328 * successfully parsed by the SDIO core or if it is
329 * not going to be queued for a driver.
330 */
331 kfree(this);
332 }
333
334 ptr += tpl_link;
335 } while (!ret);
336
337 /*
338 * Link in all unknown tuples found in the common CIS so that
339 * drivers don't have to go digging in two places.
340 */
341 if (func)
342 *prev = card->tuples;
343
344 return ret;
345}
346
347int sdio_read_common_cis(struct mmc_card *card)
348{
349 return sdio_read_cis(card, NULL);
350}
351
352void sdio_free_common_cis(struct mmc_card *card)
353{
354 struct sdio_func_tuple *tuple, *victim;
355
356 tuple = card->tuples;
357
358 while (tuple) {
359 victim = tuple;
360 tuple = tuple->next;
361 kfree(victim);
362 }
363
364 card->tuples = NULL;
365}
366
367int sdio_read_func_cis(struct sdio_func *func)
368{
369 int ret;
370
371 ret = sdio_read_cis(func->card, func);
372 if (ret)
373 return ret;
374
375 /*
376 * Since we've linked to tuples in the card structure,
377 * we must make sure we have a reference to it.
378 */
379 get_device(&func->card->dev);
380
381 /*
382 * Vendor/device id is optional for function CIS, so
383 * copy it from the card structure as needed.
384 */
385 if (func->vendor == 0) {
386 func->vendor = func->card->cis.vendor;
387 func->device = func->card->cis.device;
388 }
389
390 return 0;
391}
392
393void sdio_free_func_cis(struct sdio_func *func)
394{
395 struct sdio_func_tuple *tuple, *victim;
396
397 tuple = func->tuples;
398
399 while (tuple && tuple != func->card->tuples) {
400 victim = tuple;
401 tuple = tuple->next;
402 kfree(victim);
403 }
404
405 func->tuples = NULL;
406
407 /*
408 * We have now removed the link to the tuples in the
409 * card structure, so remove the reference.
410 */
411 put_device(&func->card->dev);
412}
413
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * linux/drivers/mmc/core/sdio_cis.c
4 *
5 * Author: Nicolas Pitre
6 * Created: June 11, 2007
7 * Copyright: MontaVista Software Inc.
8 *
9 * Copyright 2007 Pierre Ossman
10 */
11
12#include <linux/kernel.h>
13#include <linux/slab.h>
14
15#include <linux/mmc/host.h>
16#include <linux/mmc/card.h>
17#include <linux/mmc/sdio.h>
18#include <linux/mmc/sdio_func.h>
19
20#include "sdio_cis.h"
21#include "sdio_ops.h"
22
23static int cistpl_vers_1(struct mmc_card *card, struct sdio_func *func,
24 const unsigned char *buf, unsigned size)
25{
26 unsigned i, nr_strings;
27 char **buffer, *string;
28
29 /* Find all null-terminated (including zero length) strings in
30 the TPLLV1_INFO field. Trailing garbage is ignored. */
31 buf += 2;
32 size -= 2;
33
34 nr_strings = 0;
35 for (i = 0; i < size; i++) {
36 if (buf[i] == 0xff)
37 break;
38 if (buf[i] == 0)
39 nr_strings++;
40 }
41 if (nr_strings == 0)
42 return 0;
43
44 size = i;
45
46 buffer = kzalloc(sizeof(char*) * nr_strings + size, GFP_KERNEL);
47 if (!buffer)
48 return -ENOMEM;
49
50 string = (char*)(buffer + nr_strings);
51
52 for (i = 0; i < nr_strings; i++) {
53 buffer[i] = string;
54 strcpy(string, buf);
55 string += strlen(string) + 1;
56 buf += strlen(buf) + 1;
57 }
58
59 if (func) {
60 func->num_info = nr_strings;
61 func->info = (const char**)buffer;
62 } else {
63 card->num_info = nr_strings;
64 card->info = (const char**)buffer;
65 }
66
67 return 0;
68}
69
70static int cistpl_manfid(struct mmc_card *card, struct sdio_func *func,
71 const unsigned char *buf, unsigned size)
72{
73 unsigned int vendor, device;
74
75 /* TPLMID_MANF */
76 vendor = buf[0] | (buf[1] << 8);
77
78 /* TPLMID_CARD */
79 device = buf[2] | (buf[3] << 8);
80
81 if (func) {
82 func->vendor = vendor;
83 func->device = device;
84 } else {
85 card->cis.vendor = vendor;
86 card->cis.device = device;
87 }
88
89 return 0;
90}
91
92static const unsigned char speed_val[16] =
93 { 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 };
94static const unsigned int speed_unit[8] =
95 { 10000, 100000, 1000000, 10000000, 0, 0, 0, 0 };
96
97
98typedef int (tpl_parse_t)(struct mmc_card *, struct sdio_func *,
99 const unsigned char *, unsigned);
100
101struct cis_tpl {
102 unsigned char code;
103 unsigned char min_size;
104 tpl_parse_t *parse;
105};
106
107static int cis_tpl_parse(struct mmc_card *card, struct sdio_func *func,
108 const char *tpl_descr,
109 const struct cis_tpl *tpl, int tpl_count,
110 unsigned char code,
111 const unsigned char *buf, unsigned size)
112{
113 int i, ret;
114
115 /* look for a matching code in the table */
116 for (i = 0; i < tpl_count; i++, tpl++) {
117 if (tpl->code == code)
118 break;
119 }
120 if (i < tpl_count) {
121 if (size >= tpl->min_size) {
122 if (tpl->parse)
123 ret = tpl->parse(card, func, buf, size);
124 else
125 ret = -EILSEQ; /* known tuple, not parsed */
126 } else {
127 /* invalid tuple */
128 ret = -EINVAL;
129 }
130 if (ret && ret != -EILSEQ && ret != -ENOENT) {
131 pr_err("%s: bad %s tuple 0x%02x (%u bytes)\n",
132 mmc_hostname(card->host), tpl_descr, code, size);
133 }
134 } else {
135 /* unknown tuple */
136 ret = -ENOENT;
137 }
138
139 return ret;
140}
141
142static int cistpl_funce_common(struct mmc_card *card, struct sdio_func *func,
143 const unsigned char *buf, unsigned size)
144{
145 /* Only valid for the common CIS (function 0) */
146 if (func)
147 return -EINVAL;
148
149 /* TPLFE_FN0_BLK_SIZE */
150 card->cis.blksize = buf[1] | (buf[2] << 8);
151
152 /* TPLFE_MAX_TRAN_SPEED */
153 card->cis.max_dtr = speed_val[(buf[3] >> 3) & 15] *
154 speed_unit[buf[3] & 7];
155
156 return 0;
157}
158
159static int cistpl_funce_func(struct mmc_card *card, struct sdio_func *func,
160 const unsigned char *buf, unsigned size)
161{
162 unsigned vsn;
163 unsigned min_size;
164
165 /* Only valid for the individual function's CIS (1-7) */
166 if (!func)
167 return -EINVAL;
168
169 /*
170 * This tuple has a different length depending on the SDIO spec
171 * version.
172 */
173 vsn = func->card->cccr.sdio_vsn;
174 min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
175
176 if (size == 28 && vsn == SDIO_SDIO_REV_1_10) {
177 pr_warn("%s: card has broken SDIO 1.1 CIS, forcing SDIO 1.0\n",
178 mmc_hostname(card->host));
179 vsn = SDIO_SDIO_REV_1_00;
180 } else if (size < min_size) {
181 return -EINVAL;
182 }
183
184 /* TPLFE_MAX_BLK_SIZE */
185 func->max_blksize = buf[12] | (buf[13] << 8);
186
187 /* TPLFE_ENABLE_TIMEOUT_VAL, present in ver 1.1 and above */
188 if (vsn > SDIO_SDIO_REV_1_00)
189 func->enable_timeout = (buf[28] | (buf[29] << 8)) * 10;
190 else
191 func->enable_timeout = jiffies_to_msecs(HZ);
192
193 return 0;
194}
195
196/*
197 * Known TPLFE_TYPEs table for CISTPL_FUNCE tuples.
198 *
199 * Note that, unlike PCMCIA, CISTPL_FUNCE tuples are not parsed depending
200 * on the TPLFID_FUNCTION value of the previous CISTPL_FUNCID as on SDIO
201 * TPLFID_FUNCTION is always hardcoded to 0x0C.
202 */
203static const struct cis_tpl cis_tpl_funce_list[] = {
204 { 0x00, 4, cistpl_funce_common },
205 { 0x01, 0, cistpl_funce_func },
206 { 0x04, 1+1+6, /* CISTPL_FUNCE_LAN_NODE_ID */ },
207};
208
209static int cistpl_funce(struct mmc_card *card, struct sdio_func *func,
210 const unsigned char *buf, unsigned size)
211{
212 if (size < 1)
213 return -EINVAL;
214
215 return cis_tpl_parse(card, func, "CISTPL_FUNCE",
216 cis_tpl_funce_list,
217 ARRAY_SIZE(cis_tpl_funce_list),
218 buf[0], buf, size);
219}
220
221/* Known TPL_CODEs table for CIS tuples */
222static const struct cis_tpl cis_tpl_list[] = {
223 { 0x15, 3, cistpl_vers_1 },
224 { 0x20, 4, cistpl_manfid },
225 { 0x21, 2, /* cistpl_funcid */ },
226 { 0x22, 0, cistpl_funce },
227 { 0x91, 2, /* cistpl_sdio_std */ },
228};
229
230static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
231{
232 int ret;
233 struct sdio_func_tuple *this, **prev;
234 unsigned i, ptr = 0;
235
236 /*
237 * Note that this works for the common CIS (function number 0) as
238 * well as a function's CIS * since SDIO_CCCR_CIS and SDIO_FBR_CIS
239 * have the same offset.
240 */
241 for (i = 0; i < 3; i++) {
242 unsigned char x, fn;
243
244 if (func)
245 fn = func->num;
246 else
247 fn = 0;
248
249 ret = mmc_io_rw_direct(card, 0, 0,
250 SDIO_FBR_BASE(fn) + SDIO_FBR_CIS + i, 0, &x);
251 if (ret)
252 return ret;
253 ptr |= x << (i * 8);
254 }
255
256 if (func)
257 prev = &func->tuples;
258 else
259 prev = &card->tuples;
260
261 if (*prev)
262 return -EINVAL;
263
264 do {
265 unsigned char tpl_code, tpl_link;
266
267 ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_code);
268 if (ret)
269 break;
270
271 /* 0xff means we're done */
272 if (tpl_code == 0xff)
273 break;
274
275 /* null entries have no link field or data */
276 if (tpl_code == 0x00)
277 continue;
278
279 ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
280 if (ret)
281 break;
282
283 /* a size of 0xff also means we're done */
284 if (tpl_link == 0xff)
285 break;
286
287 this = kmalloc(sizeof(*this) + tpl_link, GFP_KERNEL);
288 if (!this)
289 return -ENOMEM;
290
291 for (i = 0; i < tpl_link; i++) {
292 ret = mmc_io_rw_direct(card, 0, 0,
293 ptr + i, 0, &this->data[i]);
294 if (ret)
295 break;
296 }
297 if (ret) {
298 kfree(this);
299 break;
300 }
301
302 /* Try to parse the CIS tuple */
303 ret = cis_tpl_parse(card, func, "CIS",
304 cis_tpl_list, ARRAY_SIZE(cis_tpl_list),
305 tpl_code, this->data, tpl_link);
306 if (ret == -EILSEQ || ret == -ENOENT) {
307 /*
308 * The tuple is unknown or known but not parsed.
309 * Queue the tuple for the function driver.
310 */
311 this->next = NULL;
312 this->code = tpl_code;
313 this->size = tpl_link;
314 *prev = this;
315 prev = &this->next;
316
317 if (ret == -ENOENT) {
318 /* warn about unknown tuples */
319 pr_warn_ratelimited("%s: queuing unknown"
320 " CIS tuple 0x%02x (%u bytes)\n",
321 mmc_hostname(card->host),
322 tpl_code, tpl_link);
323 }
324
325 /* keep on analyzing tuples */
326 ret = 0;
327 } else {
328 /*
329 * We don't need the tuple anymore if it was
330 * successfully parsed by the SDIO core or if it is
331 * not going to be queued for a driver.
332 */
333 kfree(this);
334 }
335
336 ptr += tpl_link;
337 } while (!ret);
338
339 /*
340 * Link in all unknown tuples found in the common CIS so that
341 * drivers don't have to go digging in two places.
342 */
343 if (func)
344 *prev = card->tuples;
345
346 return ret;
347}
348
349int sdio_read_common_cis(struct mmc_card *card)
350{
351 return sdio_read_cis(card, NULL);
352}
353
354void sdio_free_common_cis(struct mmc_card *card)
355{
356 struct sdio_func_tuple *tuple, *victim;
357
358 tuple = card->tuples;
359
360 while (tuple) {
361 victim = tuple;
362 tuple = tuple->next;
363 kfree(victim);
364 }
365
366 card->tuples = NULL;
367}
368
369int sdio_read_func_cis(struct sdio_func *func)
370{
371 int ret;
372
373 ret = sdio_read_cis(func->card, func);
374 if (ret)
375 return ret;
376
377 /*
378 * Since we've linked to tuples in the card structure,
379 * we must make sure we have a reference to it.
380 */
381 get_device(&func->card->dev);
382
383 /*
384 * Vendor/device id is optional for function CIS, so
385 * copy it from the card structure as needed.
386 */
387 if (func->vendor == 0) {
388 func->vendor = func->card->cis.vendor;
389 func->device = func->card->cis.device;
390 }
391
392 return 0;
393}
394
395void sdio_free_func_cis(struct sdio_func *func)
396{
397 struct sdio_func_tuple *tuple, *victim;
398
399 tuple = func->tuples;
400
401 while (tuple && tuple != func->card->tuples) {
402 victim = tuple;
403 tuple = tuple->next;
404 kfree(victim);
405 }
406
407 func->tuples = NULL;
408
409 /*
410 * We have now removed the link to the tuples in the
411 * card structure, so remove the reference.
412 */
413 put_device(&func->card->dev);
414}
415