unsigned int period_pos;
        unsigned int buffer_pos;
        bool is_stream_running;
-
        struct task_struct *playback_task;
        wait_queue_head_t playback_waitq;
-
        void (*copy_fn)(void *alsa, void *most, unsigned int bytes);
 };
 
                if ((channel->iface == iface) && (channel->id == channel_id))
                        return channel;
        }
-
        return NULL;
 }
 
                channel->period_pos -= runtime->period_size;
                return true;
        }
-
        return false;
 }
 
                if (period_elapsed)
                        snd_pcm_period_elapsed(channel->substream);
        }
-
        return 0;
 }
 
        if (channel->cfg->direction == MOST_CH_TX)
                kthread_stop(channel->playback_task);
        most_stop_channel(channel->iface, channel->id, &comp);
-
        return 0;
 }
 
 
        if (!channel->copy_fn)
                return -EINVAL;
-
        channel->period_pos = 0;
        channel->buffer_pos = 0;
-
        return 0;
 }
 
        *sample_res = strsep(&buf, ".\n");
        if (!*sample_res)
                goto err;
-
        return 0;
 
 err:
        strscpy(pcm->name, device_name, sizeof(pcm->name));
        snd_pcm_set_ops(pcm, direction, &pcm_ops);
        snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
-
        return 0;
 
 err_free_adpt:
 
        if (!channel)
                return -EINVAL;
-
        if (channel->is_stream_running)
                period_elapsed = copy_data(channel, mbo);
-
        most_put_mbo(mbo);
-
        if (period_elapsed)
                snd_pcm_period_elapsed(channel->substream);
-
        return 0;
 }
 
                pr_err("Failed to register %s configfs subsys\n", comp.name);
                most_deregister_component(&comp);
        }
-
        return ret;
 }