tools/testing/selftests/alsa/pcm-test.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // kselftest for the ALSA PCM API
   4 //
   5 // Original author: Jaroslav Kysela <perex@perex.cz>
   6 // Copyright (c) 2022 Red Hat Inc.
   7
   8 // This test will iterate over all cards detected in the system, exercising
   9 // every PCM device it can find.  This may conflict with other system
  10 // software if there is audio activity so is best run on a system with a
  11 // minimal active userspace.
  12
  13 #include <stdio.h>
  14 #include <stdlib.h>
  15 #include <stdbool.h>
  16 #include <errno.h>
  17 #include <assert.h>
  18 #include <pthread.h>
  19
  20 #include "../kselftest.h"
  21 #include "alsa-local.h"
  22
  23 typedef struct timespec timestamp_t;
  24
  25 struct card_data {
  26         int card;
  27         pthread_t thread;
  28         struct card_data *next;
  29 };
  30
  31 struct card_data *card_list = NULL;
  32
  33 struct pcm_data {
  34         snd_pcm_t *handle;
  35         int card;
  36         int device;
  37         int subdevice;
  38         snd_pcm_stream_t stream;
  39         snd_config_t *pcm_config;
  40         struct pcm_data *next;
  41 };
  42
  43 struct pcm_data *pcm_list = NULL;
  44
  45 int num_missing = 0;
  46 struct pcm_data *pcm_missing = NULL;
  47
  48 snd_config_t *default_pcm_config;
  49
  50 /* Lock while reporting results since kselftest doesn't */
  51 pthread_mutex_t results_lock = PTHREAD_MUTEX_INITIALIZER;
  52
  53 enum test_class {
  54         TEST_CLASS_DEFAULT,
  55         TEST_CLASS_SYSTEM,
  56 };
  57
  58 void timestamp_now(timestamp_t *tstamp)
  59 {
  60         if (clock_gettime(CLOCK_MONOTONIC_RAW, tstamp))
  61                 ksft_exit_fail_msg("clock_get_time\n");
  62 }
  63
  64 long long timestamp_diff_ms(timestamp_t *tstamp)
  65 {
  66         timestamp_t now, diff;
  67         timestamp_now(&now);
  68         if (tstamp->tv_nsec > now.tv_nsec) {
  69                 diff.tv_sec = now.tv_sec - tstamp->tv_sec - 1;
  70                 diff.tv_nsec = (now.tv_nsec + 1000000000L) - tstamp->tv_nsec;
  71         } else {
  72                 diff.tv_sec = now.tv_sec - tstamp->tv_sec;
  73                 diff.tv_nsec = now.tv_nsec - tstamp->tv_nsec;
  74         }
  75         return (diff.tv_sec * 1000) + ((diff.tv_nsec + 500000L) / 1000000L);
  76 }
  77
  78 static long device_from_id(snd_config_t *node)
  79 {
  80         const char *id;
  81         char *end;
  82         long v;
  83
  84         if (snd_config_get_id(node, &id))
  85                 ksft_exit_fail_msg("snd_config_get_id\n");
  86         errno = 0;
  87         v = strtol(id, &end, 10);
  88         if (errno || *end)
  89                 return -1;
  90         return v;
  91 }
  92
  93 static void missing_device(int card, int device, int subdevice, snd_pcm_stream_t stream)
  94 {
  95         struct pcm_data *pcm_data;
  96
  97         for (pcm_data = pcm_list; pcm_data != NULL; pcm_data = pcm_data->next) {
  98                 if (pcm_data->card != card)
  99                         continue;
 100                 if (pcm_data->device != device)
 101                         continue;
 102                 if (pcm_data->subdevice != subdevice)
 103                         continue;
 104                 if (pcm_data->stream != stream)
 105                         continue;
 106                 return;
 107         }
 108         pcm_data = calloc(1, sizeof(*pcm_data));
 109         if (!pcm_data)
 110                 ksft_exit_fail_msg("Out of memory\n");
 111         pcm_data->card = card;
 112         pcm_data->device = device;
 113         pcm_data->subdevice = subdevice;
 114         pcm_data->stream = stream;
 115         pcm_data->next = pcm_missing;
 116         pcm_missing = pcm_data;
 117         num_missing++;
 118 }
 119
 120 static void missing_devices(int card, snd_config_t *card_config)
 121 {
 122         snd_config_t *pcm_config, *node1, *node2;
 123         snd_config_iterator_t i1, i2, next1, next2;
 124         int device, subdevice;
 125
 126         pcm_config = conf_get_subtree(card_config, "pcm", NULL);
 127         if (!pcm_config)
 128                 return;
 129         snd_config_for_each(i1, next1, pcm_config) {
 130                 node1 = snd_config_iterator_entry(i1);
 131                 device = device_from_id(node1);
 132                 if (device < 0)
 133                         continue;
 134                 if (snd_config_get_type(node1) != SND_CONFIG_TYPE_COMPOUND)
 135                         continue;
 136                 snd_config_for_each(i2, next2, node1) {
 137                         node2 = snd_config_iterator_entry(i2);
 138                         subdevice = device_from_id(node2);
 139                         if (subdevice < 0)
 140                                 continue;
 141                         if (conf_get_subtree(node2, "PLAYBACK", NULL))
 142                                 missing_device(card, device, subdevice, SND_PCM_STREAM_PLAYBACK);
 143                         if (conf_get_subtree(node2, "CAPTURE", NULL))
 144                                 missing_device(card, device, subdevice, SND_PCM_STREAM_CAPTURE);
 145                 }
 146         }
 147 }
 148
 149 static void find_pcms(void)
 150 {
 151         char name[32], key[64];
 152         char *card_name, *card_longname;
 153         int card, dev, subdev, count, direction, err;
 154         snd_pcm_stream_t stream;
 155         struct pcm_data *pcm_data;
 156         snd_ctl_t *handle;
 157         snd_pcm_info_t *pcm_info;
 158         snd_config_t *config, *card_config, *pcm_config;
 159         struct card_data *card_data;
 160
 161         snd_pcm_info_alloca(&pcm_info);
 162
 163         card = -1;
 164         if (snd_card_next(&card) < 0 || card < 0)
 165                 return;
 166
 167         config = get_alsalib_config();
 168
 169         while (card >= 0) {
 170                 sprintf(name, "hw:%d", card);
 171
 172                 err = snd_ctl_open_lconf(&handle, name, 0, config);
 173                 if (err < 0) {
 174                         ksft_print_msg("Failed to get hctl for card %d: %s\n",
 175                                        card, snd_strerror(err));
 176                         goto next_card;
 177                 }
 178
 179                 err = snd_card_get_name(card, &card_name);
 180                 if (err != 0)
 181                         card_name = "Unknown";
 182                 err = snd_card_get_longname(card, &card_longname);
 183                 if (err != 0)
 184                         card_longname = "Unknown";
 185                 ksft_print_msg("Card %d - %s (%s)\n", card,
 186                                card_name, card_longname);
 187
 188                 card_config = conf_by_card(card);
 189
 190                 card_data = calloc(1, sizeof(*card_data));
 191                 if (!card_data)
 192                         ksft_exit_fail_msg("Out of memory\n");
 193                 card_data->card = card;
 194                 card_data->next = card_list;
 195                 card_list = card_data;
 196
 197                 dev = -1;
 198                 while (1) {
 199                         if (snd_ctl_pcm_next_device(handle, &dev) < 0)
 200                                 ksft_exit_fail_msg("snd_ctl_pcm_next_device\n");
 201                         if (dev < 0)
 202                                 break;
 203
 204                         for (direction = 0; direction < 2; direction++) {
 205                                 stream = direction ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK;
 206                                 sprintf(key, "pcm.%d.%s", dev, snd_pcm_stream_name(stream));
 207                                 pcm_config = conf_get_subtree(card_config, key, NULL);
 208                                 if (conf_get_bool(card_config, key, "skip", false)) {
 209                                         ksft_print_msg("skipping pcm %d.%d.%s\n", card, dev, snd_pcm_stream_name(stream));
 210                                         continue;
 211                                 }
 212                                 snd_pcm_info_set_device(pcm_info, dev);
 213                                 snd_pcm_info_set_subdevice(pcm_info, 0);
 214                                 snd_pcm_info_set_stream(pcm_info, stream);
 215                                 err = snd_ctl_pcm_info(handle, pcm_info);
 216                                 if (err == -ENOENT)
 217                                         continue;
 218                                 if (err < 0)
 219                                         ksft_exit_fail_msg("snd_ctl_pcm_info: %d:%d:%d\n",
 220                                                            dev, 0, stream);
 221                                 count = snd_pcm_info_get_subdevices_count(pcm_info);
 222                                 for (subdev = 0; subdev < count; subdev++) {
 223                                         sprintf(key, "pcm.%d.%d.%s", dev, subdev, snd_pcm_stream_name(stream));
 224                                         if (conf_get_bool(card_config, key, "skip", false)) {
 225                                                 ksft_print_msg("skipping pcm %d.%d.%d.%s\n", card, dev,
 226                                                                subdev, snd_pcm_stream_name(stream));
 227                                                 continue;
 228                                         }
 229                                         pcm_data = calloc(1, sizeof(*pcm_data));
 230                                         if (!pcm_data)
 231                                                 ksft_exit_fail_msg("Out of memory\n");
 232                                         pcm_data->card = card;
 233                                         pcm_data->device = dev;
 234                                         pcm_data->subdevice = subdev;
 235                                         pcm_data->stream = stream;
 236                                         pcm_data->pcm_config = conf_get_subtree(card_config, key, NULL);
 237                                         pcm_data->next = pcm_list;
 238                                         pcm_list = pcm_data;
 239                                 }
 240                         }
 241                 }
 242
 243                 /* check for missing devices */
 244                 missing_devices(card, card_config);
 245
 246         next_card:
 247                 snd_ctl_close(handle);
 248                 if (snd_card_next(&card) < 0) {
 249                         ksft_print_msg("snd_card_next");
 250                         break;
 251                 }
 252         }
 253
 254         snd_config_delete(config);
 255 }
 256
 257 static void test_pcm_time(struct pcm_data *data, enum test_class class,
 258                           const char *test_name, snd_config_t *pcm_cfg)
 259 {
 260         char name[64], key[128], msg[256];
 261         const int duration_s = 2, margin_ms = 100;
 262         const int duration_ms = duration_s * 1000;
 263         const char *cs;
 264         int i, err;
 265         snd_pcm_t *handle = NULL;
 266         snd_pcm_access_t access = SND_PCM_ACCESS_RW_INTERLEAVED;
 267         snd_pcm_format_t format, old_format;
 268         const char *alt_formats[8];
 269         unsigned char *samples = NULL;
 270         snd_pcm_sframes_t frames;
 271         long long ms;
 272         long rate, channels, period_size, buffer_size;
 273         unsigned int rrate;
 274         snd_pcm_uframes_t rperiod_size, rbuffer_size, start_threshold;
 275         timestamp_t tstamp;
 276         bool pass = false;
 277         snd_pcm_hw_params_t *hw_params;
 278         snd_pcm_sw_params_t *sw_params;
 279         const char *test_class_name;
 280         bool skip = true;
 281         const char *desc;
 282
 283         switch (class) {
 284         case TEST_CLASS_DEFAULT:
 285                 test_class_name = "default";
 286                 break;
 287         case TEST_CLASS_SYSTEM:
 288                 test_class_name = "system";
 289                 break;
 290         default:
 291                 ksft_exit_fail_msg("Unknown test class %d\n", class);
 292                 break;
 293         }
 294
 295         desc = conf_get_string(pcm_cfg, "description", NULL, NULL);
 296         if (desc)
 297                 ksft_print_msg("%s.%s.%d.%d.%d.%s - %s\n",
 298                                test_class_name, test_name,
 299                                data->card, data->device, data->subdevice,
 300                                snd_pcm_stream_name(data->stream),
 301                                desc);
 302
 303
 304         snd_pcm_hw_params_alloca(&hw_params);
 305         snd_pcm_sw_params_alloca(&sw_params);
 306
 307         cs = conf_get_string(pcm_cfg, "format", NULL, "S16_LE");
 308         format = snd_pcm_format_value(cs);
 309         if (format == SND_PCM_FORMAT_UNKNOWN)
 310                 ksft_exit_fail_msg("Wrong format '%s'\n", cs);
 311         conf_get_string_array(pcm_cfg, "alt_formats", NULL,
 312                                 alt_formats, ARRAY_SIZE(alt_formats), NULL);
 313         rate = conf_get_long(pcm_cfg, "rate", NULL, 48000);
 314         channels = conf_get_long(pcm_cfg, "channels", NULL, 2);
 315         period_size = conf_get_long(pcm_cfg, "period_size", NULL, 4096);
 316         buffer_size = conf_get_long(pcm_cfg, "buffer_size", NULL, 16384);
 317
 318         samples = malloc((rate * channels * snd_pcm_format_physical_width(format)) / 8);
 319         if (!samples)
 320                 ksft_exit_fail_msg("Out of memory\n");
 321         snd_pcm_format_set_silence(format, samples, rate * channels);
 322
 323         sprintf(name, "hw:%d,%d,%d", data->card, data->device, data->subdevice);
 324         err = snd_pcm_open(&handle, name, data->stream, 0);
 325         if (err < 0) {
 326                 snprintf(msg, sizeof(msg), "Failed to get pcm handle: %s", snd_strerror(err));
 327                 goto __close;
 328         }
 329
 330         err = snd_pcm_hw_params_any(handle, hw_params);
 331         if (err < 0) {
 332                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params_any: %s", snd_strerror(err));
 333                 goto __close;
 334         }
 335         err = snd_pcm_hw_params_set_rate_resample(handle, hw_params, 0);
 336         if (err < 0) {
 337                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params_set_rate_resample: %s", snd_strerror(err));
 338                 goto __close;
 339         }
 340         err = snd_pcm_hw_params_set_access(handle, hw_params, access);
 341         if (err < 0) {
 342                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params_set_access %s: %s",
 343                                            snd_pcm_access_name(access), snd_strerror(err));
 344                 goto __close;
 345         }
 346         i = -1;
 347 __format:
 348         err = snd_pcm_hw_params_set_format(handle, hw_params, format);
 349         if (err < 0) {
 350                 i++;
 351                 if (i < ARRAY_SIZE(alt_formats) && alt_formats[i]) {
 352                         old_format = format;
 353                         format = snd_pcm_format_value(alt_formats[i]);
 354                         if (format != SND_PCM_FORMAT_UNKNOWN) {
 355                                 ksft_print_msg("%s.%d.%d.%d.%s.%s format %s -> %s\n",
 356                                                  test_name,
 357                                                  data->card, data->device, data->subdevice,
 358                                                  snd_pcm_stream_name(data->stream),
 359                                                  snd_pcm_access_name(access),
 360                                                  snd_pcm_format_name(old_format),
 361                                                  snd_pcm_format_name(format));
 362                                 samples = realloc(samples, (rate * channels *
 363                                                             snd_pcm_format_physical_width(format)) / 8);
 364                                 if (!samples)
 365                                         ksft_exit_fail_msg("Out of memory\n");
 366                                 snd_pcm_format_set_silence(format, samples, rate * channels);
 367                                 goto __format;
 368                         }
 369                 }
 370                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params_set_format %s: %s",
 371                                            snd_pcm_format_name(format), snd_strerror(err));
 372                 goto __close;
 373         }
 374         err = snd_pcm_hw_params_set_channels(handle, hw_params, channels);
 375         if (err < 0) {
 376                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params_set_channels %ld: %s", channels, snd_strerror(err));
 377                 goto __close;
 378         }
 379         rrate = rate;
 380         err = snd_pcm_hw_params_set_rate_near(handle, hw_params, &rrate, 0);
 381         if (err < 0) {
 382                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params_set_rate %ld: %s", rate, snd_strerror(err));
 383                 goto __close;
 384         }
 385         if (rrate != rate) {
 386                 snprintf(msg, sizeof(msg), "rate mismatch %ld != %d", rate, rrate);
 387                 goto __close;
 388         }
 389         rperiod_size = period_size;
 390         err = snd_pcm_hw_params_set_period_size_near(handle, hw_params, &rperiod_size, 0);
 391         if (err < 0) {
 392                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params_set_period_size %ld: %s", period_size, snd_strerror(err));
 393                 goto __close;
 394         }
 395         rbuffer_size = buffer_size;
 396         err = snd_pcm_hw_params_set_buffer_size_near(handle, hw_params, &rbuffer_size);
 397         if (err < 0) {
 398                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params_set_buffer_size %ld: %s", buffer_size, snd_strerror(err));
 399                 goto __close;
 400         }
 401         err = snd_pcm_hw_params(handle, hw_params);
 402         if (err < 0) {
 403                 snprintf(msg, sizeof(msg), "snd_pcm_hw_params: %s", snd_strerror(err));
 404                 goto __close;
 405         }
 406
 407         err = snd_pcm_sw_params_current(handle, sw_params);
 408         if (err < 0) {
 409                 snprintf(msg, sizeof(msg), "snd_pcm_sw_params_current: %s", snd_strerror(err));
 410                 goto __close;
 411         }
 412         if (data->stream == SND_PCM_STREAM_PLAYBACK) {
 413                 start_threshold = (rbuffer_size / rperiod_size) * rperiod_size;
 414         } else {
 415                 start_threshold = rperiod_size;
 416         }
 417         err = snd_pcm_sw_params_set_start_threshold(handle, sw_params, start_threshold);
 418         if (err < 0) {
 419                 snprintf(msg, sizeof(msg), "snd_pcm_sw_params_set_start_threshold %ld: %s", (long)start_threshold, snd_strerror(err));
 420                 goto __close;
 421         }
 422         err = snd_pcm_sw_params_set_avail_min(handle, sw_params, rperiod_size);
 423         if (err < 0) {
 424                 snprintf(msg, sizeof(msg), "snd_pcm_sw_params_set_avail_min %ld: %s", (long)rperiod_size, snd_strerror(err));
 425                 goto __close;
 426         }
 427         err = snd_pcm_sw_params(handle, sw_params);
 428         if (err < 0) {
 429                 snprintf(msg, sizeof(msg), "snd_pcm_sw_params: %s", snd_strerror(err));
 430                 goto __close;
 431         }
 432
 433         ksft_print_msg("%s.%s.%d.%d.%d.%s hw_params.%s.%s.%ld.%ld.%ld.%ld sw_params.%ld\n",
 434                          test_class_name, test_name,
 435                          data->card, data->device, data->subdevice,
 436                          snd_pcm_stream_name(data->stream),
 437                          snd_pcm_access_name(access),
 438                          snd_pcm_format_name(format),
 439                          (long)rate, (long)channels,
 440                          (long)rperiod_size, (long)rbuffer_size,
 441                          (long)start_threshold);
 442
 443         /* Set all the params, actually run the test */
 444         skip = false;
 445
 446         timestamp_now(&tstamp);
 447         for (i = 0; i < duration_s; i++) {
 448                 if (data->stream == SND_PCM_STREAM_PLAYBACK) {
 449                         frames = snd_pcm_writei(handle, samples, rate);
 450                         if (frames < 0) {
 451                                 snprintf(msg, sizeof(msg),
 452                                          "Write failed: expected %ld, wrote %li", rate, frames);
 453                                 goto __close;
 454                         }
 455                         if (frames < rate) {
 456                                 snprintf(msg, sizeof(msg),
 457                                          "expected %ld, wrote %li", rate, frames);
 458                                 goto __close;
 459                         }
 460                 } else {
 461                         frames = snd_pcm_readi(handle, samples, rate);
 462                         if (frames < 0) {
 463                                 snprintf(msg, sizeof(msg),
 464                                          "expected %ld, wrote %li", rate, frames);
 465                                 goto __close;
 466                         }
 467                         if (frames < rate) {
 468                                 snprintf(msg, sizeof(msg),
 469                                          "expected %ld, wrote %li", rate, frames);
 470                                 goto __close;
 471                         }
 472                 }
 473         }
 474
 475         snd_pcm_drain(handle);
 476         ms = timestamp_diff_ms(&tstamp);
 477         if (ms < duration_ms - margin_ms || ms > duration_ms + margin_ms) {
 478                 snprintf(msg, sizeof(msg), "time mismatch: expected %dms got %lld", duration_ms, ms);
 479                 goto __close;
 480         }
 481
 482         msg[0] = '\0';
 483         pass = true;
 484 __close:
 485         pthread_mutex_lock(&results_lock);
 486
 487         switch (class) {
 488         case TEST_CLASS_SYSTEM:
 489                 test_class_name = "system";
 490                 /*
 491                  * Anything specified as specific to this system
 492                  * should always be supported.
 493                  */
 494                 ksft_test_result(!skip, "%s.%s.%d.%d.%d.%s.params\n",
 495                                  test_class_name, test_name,
 496                                  data->card, data->device, data->subdevice,
 497                                  snd_pcm_stream_name(data->stream));
 498                 break;
 499         default:
 500                 break;
 501         }
 502
 503         if (!skip)
 504                 ksft_test_result(pass, "%s.%s.%d.%d.%d.%s\n",
 505                                  test_class_name, test_name,
 506                                  data->card, data->device, data->subdevice,
 507                                  snd_pcm_stream_name(data->stream));
 508         else
 509                 ksft_test_result_skip("%s.%s.%d.%d.%d.%s\n",
 510                                  test_class_name, test_name,
 511                                  data->card, data->device, data->subdevice,
 512                                  snd_pcm_stream_name(data->stream));
 513
 514         if (msg[0])
 515                 ksft_print_msg("%s\n", msg);
 516
 517         pthread_mutex_unlock(&results_lock);
 518
 519         free(samples);
 520         if (handle)
 521                 snd_pcm_close(handle);
 522 }
 523
 524 void run_time_tests(struct pcm_data *pcm, enum test_class class,
 525                     snd_config_t *cfg)
 526 {
 527         const char *test_name, *test_type;
 528         snd_config_t *pcm_cfg;
 529         snd_config_iterator_t i, next;
 530
 531         if (!cfg)
 532                 return;
 533
 534         cfg = conf_get_subtree(cfg, "test", NULL);
 535         if (cfg == NULL)
 536                 return;
 537
 538         snd_config_for_each(i, next, cfg) {
 539                 pcm_cfg = snd_config_iterator_entry(i);
 540                 if (snd_config_get_id(pcm_cfg, &test_name) < 0)
 541                         ksft_exit_fail_msg("snd_config_get_id\n");
 542                 test_type = conf_get_string(pcm_cfg, "type", NULL, "time");
 543                 if (strcmp(test_type, "time") == 0)
 544                         test_pcm_time(pcm, class, test_name, pcm_cfg);
 545                 else
 546                         ksft_exit_fail_msg("unknown test type '%s'\n", test_type);
 547         }
 548 }
 549
 550 void *card_thread(void *data)
 551 {
 552         struct card_data *card = data;
 553         struct pcm_data *pcm;
 554
 555         for (pcm = pcm_list; pcm != NULL; pcm = pcm->next) {
 556                 if (pcm->card != card->card)
 557                         continue;
 558
 559                 run_time_tests(pcm, TEST_CLASS_DEFAULT, default_pcm_config);
 560                 run_time_tests(pcm, TEST_CLASS_SYSTEM, pcm->pcm_config);
 561         }
 562
 563         return 0;
 564 }
 565
 566 int main(void)
 567 {
 568         struct card_data *card;
 569         struct pcm_data *pcm;
 570         snd_config_t *global_config, *cfg, *pcm_cfg;
 571         int num_pcm_tests = 0, num_tests, num_std_pcm_tests;
 572         int ret;
 573         void *thread_ret;
 574
 575         ksft_print_header();
 576
 577         global_config = conf_load_from_file("pcm-test.conf");
 578         default_pcm_config = conf_get_subtree(global_config, "pcm", NULL);
 579         if (default_pcm_config == NULL)
 580                 ksft_exit_fail_msg("default pcm test configuration (pcm compound) is missing\n");
 581
 582         conf_load();
 583
 584         find_pcms();
 585
 586         num_std_pcm_tests = conf_get_count(default_pcm_config, "test", NULL);
 587
 588         for (pcm = pcm_list; pcm != NULL; pcm = pcm->next) {
 589                 num_pcm_tests += num_std_pcm_tests;
 590                 cfg = pcm->pcm_config;
 591                 if (cfg == NULL)
 592                         continue;
 593                 /* Setting params is reported as a separate test */
 594                 num_tests = conf_get_count(cfg, "test", NULL) * 2;
 595                 if (num_tests > 0)
 596                         num_pcm_tests += num_tests;
 597         }
 598
 599         ksft_set_plan(num_missing + num_pcm_tests);
 600
 601         for (pcm = pcm_missing; pcm != NULL; pcm = pcm->next) {
 602                 ksft_test_result(false, "test.missing.%d.%d.%d.%s\n",
 603                                  pcm->card, pcm->device, pcm->subdevice,
 604                                  snd_pcm_stream_name(pcm->stream));
 605         }
 606
 607         for (card = card_list; card != NULL; card = card->next) {
 608                 ret = pthread_create(&card->thread, NULL, card_thread, card);
 609                 if (ret != 0) {
 610                         ksft_exit_fail_msg("Failed to create card %d thread: %d (%s)\n",
 611                                            card->card, ret,
 612                                            strerror(errno));
 613                 }
 614         }
 615
 616         for (card = card_list; card != NULL; card = card->next) {
 617                 ret = pthread_join(card->thread, &thread_ret);
 618                 if (ret != 0) {
 619                         ksft_exit_fail_msg("Failed to join card %d thread: %d (%s)\n",
 620                                            card->card, ret,
 621                                            strerror(errno));
 622                 }
 623         }
 624
 625         snd_config_delete(global_config);
 626         conf_free();
 627
 628         ksft_exit_pass();
 629
 630         return 0;
 631 }