slub: Fix kmem_cache_destroy() with SLAB_DESTROY_BY_RCU
[linux-2.6.git] / drivers / media / dvb / siano / smsdvb.c
1 /****************************************************************
2
3 Siano Mobile Silicon, Inc.
4 MDTV receiver kernel modules.
5 Copyright (C) 2006-2008, Uri Shkolnik
6
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 2 of the License, or
10 (at your option) any later version.
11
12  This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program.  If not, see <http://www.gnu.org/licenses/>.
19
20 ****************************************************************/
21
22 #include <linux/module.h>
23 #include <linux/init.h>
24
25 #include "dmxdev.h"
26 #include "dvbdev.h"
27 #include "dvb_demux.h"
28 #include "dvb_frontend.h"
29
30 #include "smscoreapi.h"
31 #include "smsendian.h"
32 #include "sms-cards.h"
33
34 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
35
36 struct smsdvb_client_t {
37         struct list_head entry;
38
39         struct smscore_device_t *coredev;
40         struct smscore_client_t *smsclient;
41
42         struct dvb_adapter      adapter;
43         struct dvb_demux        demux;
44         struct dmxdev           dmxdev;
45         struct dvb_frontend     frontend;
46
47         fe_status_t             fe_status;
48
49         struct completion       tune_done;
50
51         /* todo: save freq/band instead whole struct */
52         struct dvb_frontend_parameters fe_params;
53
54         struct SMSHOSTLIB_STATISTICS_DVB_S sms_stat_dvb;
55         int event_fe_state;
56         int event_unc_state;
57 };
58
59 static struct list_head g_smsdvb_clients;
60 static struct mutex g_smsdvb_clientslock;
61
62 static int sms_dbg;
63 module_param_named(debug, sms_dbg, int, 0644);
64 MODULE_PARM_DESC(debug, "set debug level (info=1, adv=2 (or-able))");
65
66 /* Events that may come from DVB v3 adapter */
67 static void sms_board_dvb3_event(struct smsdvb_client_t *client,
68                 enum SMS_DVB3_EVENTS event) {
69
70         struct smscore_device_t *coredev = client->coredev;
71         switch (event) {
72         case DVB3_EVENT_INIT:
73                 sms_debug("DVB3_EVENT_INIT");
74                 sms_board_event(coredev, BOARD_EVENT_BIND);
75                 break;
76         case DVB3_EVENT_SLEEP:
77                 sms_debug("DVB3_EVENT_SLEEP");
78                 sms_board_event(coredev, BOARD_EVENT_POWER_SUSPEND);
79                 break;
80         case DVB3_EVENT_HOTPLUG:
81                 sms_debug("DVB3_EVENT_HOTPLUG");
82                 sms_board_event(coredev, BOARD_EVENT_POWER_INIT);
83                 break;
84         case DVB3_EVENT_FE_LOCK:
85                 if (client->event_fe_state != DVB3_EVENT_FE_LOCK) {
86                         client->event_fe_state = DVB3_EVENT_FE_LOCK;
87                         sms_debug("DVB3_EVENT_FE_LOCK");
88                         sms_board_event(coredev, BOARD_EVENT_FE_LOCK);
89                 }
90                 break;
91         case DVB3_EVENT_FE_UNLOCK:
92                 if (client->event_fe_state != DVB3_EVENT_FE_UNLOCK) {
93                         client->event_fe_state = DVB3_EVENT_FE_UNLOCK;
94                         sms_debug("DVB3_EVENT_FE_UNLOCK");
95                         sms_board_event(coredev, BOARD_EVENT_FE_UNLOCK);
96                 }
97                 break;
98         case DVB3_EVENT_UNC_OK:
99                 if (client->event_unc_state != DVB3_EVENT_UNC_OK) {
100                         client->event_unc_state = DVB3_EVENT_UNC_OK;
101                         sms_debug("DVB3_EVENT_UNC_OK");
102                         sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_OK);
103                 }
104                 break;
105         case DVB3_EVENT_UNC_ERR:
106                 if (client->event_unc_state != DVB3_EVENT_UNC_ERR) {
107                         client->event_unc_state = DVB3_EVENT_UNC_ERR;
108                         sms_debug("DVB3_EVENT_UNC_ERR");
109                         sms_board_event(coredev, BOARD_EVENT_MULTIPLEX_ERRORS);
110                 }
111                 break;
112
113         default:
114                 sms_err("Unknown dvb3 api event");
115                 break;
116         }
117 }
118
119 static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
120 {
121         struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
122         struct SmsMsgHdr_ST *phdr = (struct SmsMsgHdr_ST *) (((u8 *) cb->p)
123                         + cb->offset);
124         u32 *pMsgData = (u32 *) phdr + 1;
125         /*u32 MsgDataLen = phdr->msgLength - sizeof(struct SmsMsgHdr_ST);*/
126         bool is_status_update = false;
127
128         smsendian_handle_rx_message((struct SmsMsgData_ST *) phdr);
129
130         switch (phdr->msgType) {
131         case MSG_SMS_DVBT_BDA_DATA:
132                 dvb_dmx_swfilter(&client->demux, (u8 *)(phdr + 1),
133                                  cb->size - sizeof(struct SmsMsgHdr_ST));
134                 break;
135
136         case MSG_SMS_RF_TUNE_RES:
137                 complete(&client->tune_done);
138                 break;
139
140         case MSG_SMS_SIGNAL_DETECTED_IND:
141                 sms_info("MSG_SMS_SIGNAL_DETECTED_IND");
142                 client->sms_stat_dvb.TransmissionData.IsDemodLocked = true;
143                 is_status_update = true;
144                 break;
145
146         case MSG_SMS_NO_SIGNAL_IND:
147                 sms_info("MSG_SMS_NO_SIGNAL_IND");
148                 client->sms_stat_dvb.TransmissionData.IsDemodLocked = false;
149                 is_status_update = true;
150                 break;
151
152         case MSG_SMS_TRANSMISSION_IND: {
153                 sms_info("MSG_SMS_TRANSMISSION_IND");
154
155                 pMsgData++;
156                 memcpy(&client->sms_stat_dvb.TransmissionData, pMsgData,
157                                 sizeof(struct TRANSMISSION_STATISTICS_S));
158
159                 /* Mo need to correct guard interval
160                  * (as opposed to old statistics message).
161                  */
162                 CORRECT_STAT_BANDWIDTH(client->sms_stat_dvb.TransmissionData);
163                 CORRECT_STAT_TRANSMISSON_MODE(
164                                 client->sms_stat_dvb.TransmissionData);
165                 is_status_update = true;
166                 break;
167         }
168         case MSG_SMS_HO_PER_SLICES_IND: {
169                 struct RECEPTION_STATISTICS_S *pReceptionData =
170                                 &client->sms_stat_dvb.ReceptionData;
171                 struct SRVM_SIGNAL_STATUS_S SignalStatusData;
172
173                 /*sms_info("MSG_SMS_HO_PER_SLICES_IND");*/
174                 pMsgData++;
175                 SignalStatusData.result = pMsgData[0];
176                 SignalStatusData.snr = pMsgData[1];
177                 SignalStatusData.inBandPower = (s32) pMsgData[2];
178                 SignalStatusData.tsPackets = pMsgData[3];
179                 SignalStatusData.etsPackets = pMsgData[4];
180                 SignalStatusData.constellation = pMsgData[5];
181                 SignalStatusData.hpCode = pMsgData[6];
182                 SignalStatusData.tpsSrvIndLP = pMsgData[7] & 0x03;
183                 SignalStatusData.tpsSrvIndHP = pMsgData[8] & 0x03;
184                 SignalStatusData.cellId = pMsgData[9] & 0xFFFF;
185                 SignalStatusData.reason = pMsgData[10];
186                 SignalStatusData.requestId = pMsgData[11];
187                 pReceptionData->IsRfLocked = pMsgData[16];
188                 pReceptionData->IsDemodLocked = pMsgData[17];
189                 pReceptionData->ModemState = pMsgData[12];
190                 pReceptionData->SNR = pMsgData[1];
191                 pReceptionData->BER = pMsgData[13];
192                 pReceptionData->RSSI = pMsgData[14];
193                 CORRECT_STAT_RSSI(client->sms_stat_dvb.ReceptionData);
194
195                 pReceptionData->InBandPwr = (s32) pMsgData[2];
196                 pReceptionData->CarrierOffset = (s32) pMsgData[15];
197                 pReceptionData->TotalTSPackets = pMsgData[3];
198                 pReceptionData->ErrorTSPackets = pMsgData[4];
199
200                 /* TS PER */
201                 if ((SignalStatusData.tsPackets + SignalStatusData.etsPackets)
202                                 > 0) {
203                         pReceptionData->TS_PER = (SignalStatusData.etsPackets
204                                         * 100) / (SignalStatusData.tsPackets
205                                         + SignalStatusData.etsPackets);
206                 } else {
207                         pReceptionData->TS_PER = 0;
208                 }
209
210                 pReceptionData->BERBitCount = pMsgData[18];
211                 pReceptionData->BERErrorCount = pMsgData[19];
212
213                 pReceptionData->MRC_SNR = pMsgData[20];
214                 pReceptionData->MRC_InBandPwr = pMsgData[21];
215                 pReceptionData->MRC_RSSI = pMsgData[22];
216
217                 is_status_update = true;
218                 break;
219         }
220         }
221         smscore_putbuffer(client->coredev, cb);
222
223         if (is_status_update) {
224                 if (client->sms_stat_dvb.ReceptionData.IsDemodLocked) {
225                         client->fe_status = FE_HAS_SIGNAL | FE_HAS_CARRIER
226                                 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
227                         sms_board_dvb3_event(client, DVB3_EVENT_FE_LOCK);
228                         if (client->sms_stat_dvb.ReceptionData.ErrorTSPackets
229                                         == 0)
230                                 sms_board_dvb3_event(client, DVB3_EVENT_UNC_OK);
231                         else
232                                 sms_board_dvb3_event(client,
233                                                 DVB3_EVENT_UNC_ERR);
234
235                 } else {
236                         /*client->fe_status =
237                                 (phdr->msgType == MSG_SMS_NO_SIGNAL_IND) ?
238                                 0 : FE_HAS_SIGNAL;*/
239                         client->fe_status = 0;
240                         sms_board_dvb3_event(client, DVB3_EVENT_FE_UNLOCK);
241                 }
242         }
243
244         return 0;
245 }
246
247 static void smsdvb_unregister_client(struct smsdvb_client_t *client)
248 {
249         /* must be called under clientslock */
250
251         list_del(&client->entry);
252
253         smscore_unregister_client(client->smsclient);
254         dvb_unregister_frontend(&client->frontend);
255         dvb_dmxdev_release(&client->dmxdev);
256         dvb_dmx_release(&client->demux);
257         dvb_unregister_adapter(&client->adapter);
258         kfree(client);
259 }
260
261 static void smsdvb_onremove(void *context)
262 {
263         kmutex_lock(&g_smsdvb_clientslock);
264
265         smsdvb_unregister_client((struct smsdvb_client_t *) context);
266
267         kmutex_unlock(&g_smsdvb_clientslock);
268 }
269
270 static int smsdvb_start_feed(struct dvb_demux_feed *feed)
271 {
272         struct smsdvb_client_t *client =
273                 container_of(feed->demux, struct smsdvb_client_t, demux);
274         struct SmsMsgData_ST PidMsg;
275
276         sms_debug("add pid %d(%x)",
277                   feed->pid, feed->pid);
278
279         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
280         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
281         PidMsg.xMsgHeader.msgFlags = 0;
282         PidMsg.xMsgHeader.msgType  = MSG_SMS_ADD_PID_FILTER_REQ;
283         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
284         PidMsg.msgData[0] = feed->pid;
285
286         smsendian_handle_tx_message((struct SmsMsgHdr_ST *)&PidMsg);
287         return smsclient_sendrequest(client->smsclient,
288                                      &PidMsg, sizeof(PidMsg));
289 }
290
291 static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
292 {
293         struct smsdvb_client_t *client =
294                 container_of(feed->demux, struct smsdvb_client_t, demux);
295         struct SmsMsgData_ST PidMsg;
296
297         sms_debug("remove pid %d(%x)",
298                   feed->pid, feed->pid);
299
300         PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
301         PidMsg.xMsgHeader.msgDstId = HIF_TASK;
302         PidMsg.xMsgHeader.msgFlags = 0;
303         PidMsg.xMsgHeader.msgType  = MSG_SMS_REMOVE_PID_FILTER_REQ;
304         PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
305         PidMsg.msgData[0] = feed->pid;
306
307         smsendian_handle_tx_message((struct SmsMsgHdr_ST *)&PidMsg);
308         return smsclient_sendrequest(client->smsclient,
309                                      &PidMsg, sizeof(PidMsg));
310 }
311
312 static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
313                                         void *buffer, size_t size,
314                                         struct completion *completion)
315 {
316         int rc;
317
318         smsendian_handle_tx_message((struct SmsMsgHdr_ST *)buffer);
319         rc = smsclient_sendrequest(client->smsclient, buffer, size);
320         if (rc < 0)
321                 return rc;
322
323         return wait_for_completion_timeout(completion,
324                                            msecs_to_jiffies(2000)) ?
325                                                 0 : -ETIME;
326 }
327
328 static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
329 {
330         struct smsdvb_client_t *client;
331         client = container_of(fe, struct smsdvb_client_t, frontend);
332
333         *stat = client->fe_status;
334
335         return 0;
336 }
337
338 static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
339 {
340         struct smsdvb_client_t *client;
341         client = container_of(fe, struct smsdvb_client_t, frontend);
342
343         *ber = client->sms_stat_dvb.ReceptionData.BER;
344
345         return 0;
346 }
347
348 static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
349 {
350         struct smsdvb_client_t *client;
351         client = container_of(fe, struct smsdvb_client_t, frontend);
352
353         if (client->sms_stat_dvb.ReceptionData.InBandPwr < -95)
354                 *strength = 0;
355                 else if (client->sms_stat_dvb.ReceptionData.InBandPwr > -29)
356                         *strength = 100;
357                 else
358                         *strength =
359                                 (client->sms_stat_dvb.ReceptionData.InBandPwr
360                                 + 95) * 3 / 2;
361
362         return 0;
363 }
364
365 static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
366 {
367         struct smsdvb_client_t *client;
368         client = container_of(fe, struct smsdvb_client_t, frontend);
369
370         *snr = client->sms_stat_dvb.ReceptionData.SNR;
371
372         return 0;
373 }
374
375 static int smsdvb_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
376 {
377         struct smsdvb_client_t *client;
378         client = container_of(fe, struct smsdvb_client_t, frontend);
379
380         *ucblocks = client->sms_stat_dvb.ReceptionData.ErrorTSPackets;
381
382         return 0;
383 }
384
385 static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
386                                     struct dvb_frontend_tune_settings *tune)
387 {
388         sms_debug("");
389
390         tune->min_delay_ms = 400;
391         tune->step_size = 250000;
392         tune->max_drift = 0;
393         return 0;
394 }
395
396 static int smsdvb_set_frontend(struct dvb_frontend *fe,
397                                struct dvb_frontend_parameters *fep)
398 {
399         struct smsdvb_client_t *client =
400                 container_of(fe, struct smsdvb_client_t, frontend);
401
402         struct {
403                 struct SmsMsgHdr_ST     Msg;
404                 u32             Data[3];
405         } Msg;
406
407         client->fe_status = FE_HAS_SIGNAL;
408         client->event_fe_state = -1;
409         client->event_unc_state = -1;
410
411         Msg.Msg.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
412         Msg.Msg.msgDstId = HIF_TASK;
413         Msg.Msg.msgFlags = 0;
414         Msg.Msg.msgType = MSG_SMS_RF_TUNE_REQ;
415         Msg.Msg.msgLength = sizeof(Msg);
416         Msg.Data[0] = fep->frequency;
417         Msg.Data[2] = 12000000;
418
419         sms_debug("freq %d band %d",
420                   fep->frequency, fep->u.ofdm.bandwidth);
421
422         switch (fep->u.ofdm.bandwidth) {
423         case BANDWIDTH_8_MHZ: Msg.Data[1] = BW_8_MHZ; break;
424         case BANDWIDTH_7_MHZ: Msg.Data[1] = BW_7_MHZ; break;
425         case BANDWIDTH_6_MHZ: Msg.Data[1] = BW_6_MHZ; break;
426         case BANDWIDTH_AUTO: return -EOPNOTSUPP;
427         default: return -EINVAL;
428         }
429
430         return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
431                                            &client->tune_done);
432 }
433
434 static int smsdvb_get_frontend(struct dvb_frontend *fe,
435                                struct dvb_frontend_parameters *fep)
436 {
437         struct smsdvb_client_t *client =
438                 container_of(fe, struct smsdvb_client_t, frontend);
439
440         sms_debug("");
441
442         /* todo: */
443         memcpy(fep, &client->fe_params,
444                sizeof(struct dvb_frontend_parameters));
445
446         return 0;
447 }
448
449 static int smsdvb_init(struct dvb_frontend *fe)
450 {
451         struct smsdvb_client_t *client =
452                 container_of(fe, struct smsdvb_client_t, frontend);
453
454         sms_board_dvb3_event(client, DVB3_EVENT_INIT);
455         return 0;
456 }
457
458 static int smsdvb_sleep(struct dvb_frontend *fe)
459 {
460         struct smsdvb_client_t *client =
461                 container_of(fe, struct smsdvb_client_t, frontend);
462
463         sms_board_dvb3_event(client, DVB3_EVENT_SLEEP);
464
465         return 0;
466 }
467
468 static void smsdvb_release(struct dvb_frontend *fe)
469 {
470         /* do nothing */
471 }
472
473 static struct dvb_frontend_ops smsdvb_fe_ops = {
474         .info = {
475                 .name                   = "Siano Mobile Digital MDTV Receiver",
476                 .type                   = FE_OFDM,
477                 .frequency_min          = 44250000,
478                 .frequency_max          = 867250000,
479                 .frequency_stepsize     = 250000,
480                 .caps = FE_CAN_INVERSION_AUTO |
481                         FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
482                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
483                         FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
484                         FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
485                         FE_CAN_GUARD_INTERVAL_AUTO |
486                         FE_CAN_RECOVER |
487                         FE_CAN_HIERARCHY_AUTO,
488         },
489
490         .release = smsdvb_release,
491
492         .set_frontend = smsdvb_set_frontend,
493         .get_frontend = smsdvb_get_frontend,
494         .get_tune_settings = smsdvb_get_tune_settings,
495
496         .read_status = smsdvb_read_status,
497         .read_ber = smsdvb_read_ber,
498         .read_signal_strength = smsdvb_read_signal_strength,
499         .read_snr = smsdvb_read_snr,
500         .read_ucblocks = smsdvb_read_ucblocks,
501
502         .init = smsdvb_init,
503         .sleep = smsdvb_sleep,
504 };
505
506 static int smsdvb_hotplug(struct smscore_device_t *coredev,
507                           struct device *device, int arrival)
508 {
509         struct smsclient_params_t params;
510         struct smsdvb_client_t *client;
511         int rc;
512
513         /* device removal handled by onremove callback */
514         if (!arrival)
515                 return 0;
516
517         if (smscore_get_device_mode(coredev) != DEVICE_MODE_DVBT_BDA) {
518                 sms_err("SMS Device mode is not set for "
519                         "DVB operation.");
520                 return 0;
521         }
522
523         client = kzalloc(sizeof(struct smsdvb_client_t), GFP_KERNEL);
524         if (!client) {
525                 sms_err("kmalloc() failed");
526                 return -ENOMEM;
527         }
528
529         /* register dvb adapter */
530         rc = dvb_register_adapter(&client->adapter,
531                                   sms_get_board(
532                                         smscore_get_board_id(coredev))->name,
533                                   THIS_MODULE, device, adapter_nr);
534         if (rc < 0) {
535                 sms_err("dvb_register_adapter() failed %d", rc);
536                 goto adapter_error;
537         }
538
539         /* init dvb demux */
540         client->demux.dmx.capabilities = DMX_TS_FILTERING;
541         client->demux.filternum = 32; /* todo: nova ??? */
542         client->demux.feednum = 32;
543         client->demux.start_feed = smsdvb_start_feed;
544         client->demux.stop_feed = smsdvb_stop_feed;
545
546         rc = dvb_dmx_init(&client->demux);
547         if (rc < 0) {
548                 sms_err("dvb_dmx_init failed %d", rc);
549                 goto dvbdmx_error;
550         }
551
552         /* init dmxdev */
553         client->dmxdev.filternum = 32;
554         client->dmxdev.demux = &client->demux.dmx;
555         client->dmxdev.capabilities = 0;
556
557         rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
558         if (rc < 0) {
559                 sms_err("dvb_dmxdev_init failed %d", rc);
560                 goto dmxdev_error;
561         }
562
563         /* init and register frontend */
564         memcpy(&client->frontend.ops, &smsdvb_fe_ops,
565                sizeof(struct dvb_frontend_ops));
566
567         rc = dvb_register_frontend(&client->adapter, &client->frontend);
568         if (rc < 0) {
569                 sms_err("frontend registration failed %d", rc);
570                 goto frontend_error;
571         }
572
573         params.initial_id = 1;
574         params.data_type = MSG_SMS_DVBT_BDA_DATA;
575         params.onresponse_handler = smsdvb_onresponse;
576         params.onremove_handler = smsdvb_onremove;
577         params.context = client;
578
579         rc = smscore_register_client(coredev, &params, &client->smsclient);
580         if (rc < 0) {
581                 sms_err("smscore_register_client() failed %d", rc);
582                 goto client_error;
583         }
584
585         client->coredev = coredev;
586
587         init_completion(&client->tune_done);
588
589         kmutex_lock(&g_smsdvb_clientslock);
590
591         list_add(&client->entry, &g_smsdvb_clients);
592
593         kmutex_unlock(&g_smsdvb_clientslock);
594
595         client->event_fe_state = -1;
596         client->event_unc_state = -1;
597         sms_board_dvb3_event(client, DVB3_EVENT_HOTPLUG);
598
599         sms_info("success");
600         sms_board_setup(coredev);
601
602         return 0;
603
604 client_error:
605         dvb_unregister_frontend(&client->frontend);
606
607 frontend_error:
608         dvb_dmxdev_release(&client->dmxdev);
609
610 dmxdev_error:
611         dvb_dmx_release(&client->demux);
612
613 dvbdmx_error:
614         dvb_unregister_adapter(&client->adapter);
615
616 adapter_error:
617         kfree(client);
618         return rc;
619 }
620
621 int smsdvb_module_init(void)
622 {
623         int rc;
624
625         INIT_LIST_HEAD(&g_smsdvb_clients);
626         kmutex_init(&g_smsdvb_clientslock);
627
628         rc = smscore_register_hotplug(smsdvb_hotplug);
629
630         sms_debug("");
631
632         return rc;
633 }
634
635 void smsdvb_module_exit(void)
636 {
637         smscore_unregister_hotplug(smsdvb_hotplug);
638
639         kmutex_lock(&g_smsdvb_clientslock);
640
641         while (!list_empty(&g_smsdvb_clients))
642                smsdvb_unregister_client(
643                         (struct smsdvb_client_t *) g_smsdvb_clients.next);
644
645         kmutex_unlock(&g_smsdvb_clientslock);
646 }
647
648 module_init(smsdvb_module_init);
649 module_exit(smsdvb_module_exit);
650
651 MODULE_DESCRIPTION("SMS DVB subsystem adaptation module");
652 MODULE_AUTHOR("Siano Mobile Silicon, Inc. (uris@siano-ms.com)");
653 MODULE_LICENSE("GPL");