107 			struct snd_pcm_substream *substream;  in snd_pcm_control_ioctl()  local
128 			for (substream = pstr->substream; substream;  in snd_pcm_control_ioctl()
129 			     substream = substream->next)  in snd_pcm_control_ioctl()
130 				if (substream->number == (int)subdevice)  in snd_pcm_control_ioctl()
132 			if (substream == NULL)  in snd_pcm_control_ioctl()
135 			return snd_pcm_info_user(substream, info);  in snd_pcm_control_ioctl()
328 static void snd_pcm_proc_info_read(struct snd_pcm_substream *substream,  in snd_pcm_proc_info_read()  argument
333 	if (! substream)  in snd_pcm_proc_info_read()
341 	err = snd_pcm_info(substream, info);  in snd_pcm_proc_info_read()
362 	snd_pcm_proc_info_read(((struct snd_pcm_str *)entry->private_data)->substream,  in snd_pcm_stream_proc_info_read()
375 	struct snd_pcm_substream *substream = entry->private_data;  in snd_pcm_substream_proc_hw_params_read()  local
378 	guard(mutex)(&substream->pcm->open_mutex);  in snd_pcm_substream_proc_hw_params_read()
379 	runtime = substream->runtime;  in snd_pcm_substream_proc_hw_params_read()
396 	if (substream->oss.oss) {  in snd_pcm_substream_proc_hw_params_read()
410 	struct snd_pcm_substream *substream = entry->private_data;  in snd_pcm_substream_proc_sw_params_read()  local
413 	guard(mutex)(&substream->pcm->open_mutex);  in snd_pcm_substream_proc_sw_params_read()
414 	runtime = substream->runtime;  in snd_pcm_substream_proc_sw_params_read()
436 	struct snd_pcm_substream *substream = entry->private_data;  in snd_pcm_substream_proc_status_read()  local
441 	guard(mutex)(&substream->pcm->open_mutex);  in snd_pcm_substream_proc_status_read()
442 	runtime = substream->runtime;  in snd_pcm_substream_proc_status_read()
448 	err = snd_pcm_status64(substream, &status);  in snd_pcm_substream_proc_status_read()
454 	snd_iprintf(buffer, "owner_pid   : %d\n", pid_vnr(substream->pid));  in snd_pcm_substream_proc_status_read()
466 	snd_iprintf(buffer, "xrun_counter: %d\n", substream->xrun_counter);  in snd_pcm_substream_proc_status_read()
474 	struct snd_pcm_substream *substream = entry->private_data;  in snd_pcm_xrun_injection_write()  local
476 	snd_pcm_stop_xrun(substream);  in snd_pcm_xrun_injection_write()
533 create_substream_info_entry(struct snd_pcm_substream *substream,  in create_substream_info_entry()  argument
540 	entry = snd_info_create_card_entry(substream->pcm->card, name,  in create_substream_info_entry()
541 					   substream->proc_root);  in create_substream_info_entry()
543 		snd_info_set_text_ops(entry, substream, read);  in create_substream_info_entry()
547 static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream)  in snd_pcm_substream_proc_init()  argument
553 	card = substream->pcm->card;  in snd_pcm_substream_proc_init()
555 	sprintf(name, "sub%i", substream->number);  in snd_pcm_substream_proc_init()
557 					   substream->pstr->proc_root);  in snd_pcm_substream_proc_init()
561 	substream->proc_root = entry;  in snd_pcm_substream_proc_init()
563 	create_substream_info_entry(substream, "info",  in snd_pcm_substream_proc_init()
565 	create_substream_info_entry(substream, "hw_params",  in snd_pcm_substream_proc_init()
567 	create_substream_info_entry(substream, "sw_params",  in snd_pcm_substream_proc_init()
569 	create_substream_info_entry(substream, "status",  in snd_pcm_substream_proc_init()
573 	entry = create_substream_info_entry(substream, "xrun_injection", NULL);  in snd_pcm_substream_proc_init()
586 static inline int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream) { return 0; }  in snd_pcm_substream_proc_init()  argument
631 	struct snd_pcm_substream *substream, *prev;  in snd_pcm_new_stream()  local
660 		substream = kzalloc_obj(*substream);  in snd_pcm_new_stream()
661 		if (!substream)  in snd_pcm_new_stream()
663 		substream->pcm = pcm;  in snd_pcm_new_stream()
664 		substream->pstr = pstr;  in snd_pcm_new_stream()
665 		substream->number = idx;  in snd_pcm_new_stream()
666 		substream->stream = stream;  in snd_pcm_new_stream()
667 		sprintf(substream->name, "subdevice #%i", idx);  in snd_pcm_new_stream()
668 		substream->buffer_bytes_max = UINT_MAX;  in snd_pcm_new_stream()
670 			pstr->substream = substream;  in snd_pcm_new_stream()
672 			prev->next = substream;  in snd_pcm_new_stream()
675 			err = snd_pcm_substream_proc_init(substream);  in snd_pcm_new_stream()
680 					pstr->substream = NULL;  in snd_pcm_new_stream()
683 				kfree(substream);  in snd_pcm_new_stream()
687 		substream->group = &substream->self_group;  in snd_pcm_new_stream()
688 		snd_pcm_group_init(&substream->self_group);  in snd_pcm_new_stream()
689 		list_add_tail(&substream->link_list, &substream->self_group.substreams);  in snd_pcm_new_stream()
690 		atomic_set(&substream->mmap_count, 0);  in snd_pcm_new_stream()
691 		prev = substream;  in snd_pcm_new_stream()
816 	struct snd_pcm_substream *substream, *substream_next;  in snd_pcm_free_stream()  local
824 	substream = pstr->substream;  in snd_pcm_free_stream()
825 	while (substream) {  in snd_pcm_free_stream()
826 		substream_next = substream->next;  in snd_pcm_free_stream()
827 		snd_pcm_timer_done(substream);  in snd_pcm_free_stream()
828 		kfree(substream);  in snd_pcm_free_stream()
829 		substream = substream_next;  in snd_pcm_free_stream()
880 	struct snd_pcm_substream *substream;  in snd_pcm_attach_substream()  local
893 	if (pstr->substream == NULL || pstr->substream_count == 0)  in snd_pcm_attach_substream()
902 		for (substream = pcm->streams[opposite].substream; substream;  in snd_pcm_attach_substream()
903 		     substream = substream->next) {  in snd_pcm_attach_substream()
904 			if (SUBSTREAM_BUSY(substream))  in snd_pcm_attach_substream()
913 			substream = pstr->substream;  in snd_pcm_attach_substream()
915 			for (substream = pstr->substream; substream;  in snd_pcm_attach_substream()
916 			     substream = substream->next)  in snd_pcm_attach_substream()
917 				if (substream->number == prefer_subdevice)  in snd_pcm_attach_substream()
920 		if (! substream)  in snd_pcm_attach_substream()
922 		if (! SUBSTREAM_BUSY(substream))  in snd_pcm_attach_substream()
924 		substream->ref_count++;  in snd_pcm_attach_substream()
925 		*rsubstream = substream;  in snd_pcm_attach_substream()
929 	for (substream = pstr->substream; substream; substream = substream->next) {  in snd_pcm_attach_substream()
930 		if (!SUBSTREAM_BUSY(substream) &&  in snd_pcm_attach_substream()
932 		     substream->number == prefer_subdevice))  in snd_pcm_attach_substream()
935 	if (substream == NULL)  in snd_pcm_attach_substream()
967 	substream->runtime = runtime;  in snd_pcm_attach_substream()
968 	substream->private_data = pcm->private_data;  in snd_pcm_attach_substream()
969 	substream->ref_count = 1;  in snd_pcm_attach_substream()
970 	substream->f_flags = file->f_flags;  in snd_pcm_attach_substream()
971 	substream->pid = get_pid(task_pid(current));  in snd_pcm_attach_substream()
973 	*rsubstream = substream;  in snd_pcm_attach_substream()
975 	substream->xrun_counter = 0;  in snd_pcm_attach_substream()
980 void snd_pcm_detach_substream(struct snd_pcm_substream *substream)  in snd_pcm_detach_substream()  argument
984 	if (PCM_RUNTIME_CHECK(substream))  in snd_pcm_detach_substream()
986 	runtime = substream->runtime;  in snd_pcm_detach_substream()
995 	if (substream->timer) {  in snd_pcm_detach_substream()
996 		scoped_guard(spinlock_irq, &substream->timer->lock)  in snd_pcm_detach_substream()
997 			substream->runtime = NULL;  in snd_pcm_detach_substream()
999 		substream->runtime = NULL;  in snd_pcm_detach_substream()
1004 	put_pid(substream->pid);  in snd_pcm_detach_substream()
1005 	substream->pid = NULL;  in snd_pcm_detach_substream()
1006 	substream->pstr->substream_opened--;  in snd_pcm_detach_substream()
1047 	struct snd_pcm_substream *substream;  in snd_pcm_dev_register()  local
1060 		if (pcm->streams[cidx].substream == NULL)  in snd_pcm_dev_register()
1079 		for (substream = pcm->streams[cidx].substream; substream; substream = substream->next)  in snd_pcm_dev_register()
1080 			snd_pcm_timer_init(substream);  in snd_pcm_dev_register()
1090 	struct snd_pcm_substream *substream;  in snd_pcm_dev_disconnect()  local
1098 	for_each_pcm_substream(pcm, cidx, substream) {  in snd_pcm_dev_disconnect()
1099 		snd_pcm_stream_lock_irq(substream);  in snd_pcm_dev_disconnect()
1100 		if (substream->runtime) {  in snd_pcm_dev_disconnect()
1101 			if (snd_pcm_running(substream))  in snd_pcm_dev_disconnect()
1102 				snd_pcm_stop(substream, SNDRV_PCM_STATE_DISCONNECTED);  in snd_pcm_dev_disconnect()
1104 			__snd_pcm_set_state(substream->runtime,  in snd_pcm_dev_disconnect()
1106 			wake_up(&substream->runtime->sleep);  in snd_pcm_dev_disconnect()
1107 			wake_up(&substream->runtime->tsleep);  in snd_pcm_dev_disconnect()
1109 		snd_pcm_stream_unlock_irq(substream);  in snd_pcm_dev_disconnect()
1112 	for_each_pcm_substream(pcm, cidx, substream)  in snd_pcm_dev_disconnect()
1113 		snd_pcm_sync_stop(substream, false);  in snd_pcm_dev_disconnect()
1174 		if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream)  in snd_pcm_proc_read()
1177 		if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream)  in snd_pcm_proc_read()