static int pcm_open()

in most_snd.c [263:291]

• 25 lines of code
• 5 McCabe index (conditional complexity)

static int pcm_open(struct snd_pcm_substream *substream)
{
	struct channel *channel = substream->private_data;
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct most_channel_config *cfg = channel->cfg;
	int ret;

	channel->substream = substream;

	if (cfg->direction == MOST_CH_TX) {
		channel->playback_task = kthread_run(playback_thread, channel,
						     "most_audio_playback");
		if (IS_ERR(channel->playback_task)) {
			pr_err("Couldn't start thread\n");
			return PTR_ERR(channel->playback_task);
		}
	}

	ret = most_start_channel(channel->iface, channel->id, &comp);
	if (ret) {
		pr_err("most_start_channel() failed!\n");
		if (cfg->direction == MOST_CH_TX)
			kthread_stop(channel->playback_task);
		return ret;
	}

	runtime->hw = channel->pcm_hardware;
	return 0;
}