static void cs_hsi_read_on_control()

in clients/cmt_speech.c [479:507]

• 27 lines of code
• 4 McCabe index (conditional complexity)

static void cs_hsi_read_on_control(struct cs_hsi_iface *hi)
{
	struct hsi_msg *msg;
	int ret;

	spin_lock(&hi->lock);
	if (hi->control_state & SSI_CHANNEL_STATE_READING) {
		dev_err(&hi->cl->device, "Control read already pending (%d)\n",
			hi->control_state);
		spin_unlock(&hi->lock);
		return;
	}
	if (hi->control_state & SSI_CHANNEL_STATE_ERROR) {
		dev_err(&hi->cl->device, "Control read error (%d)\n",
			hi->control_state);
		spin_unlock(&hi->lock);
		return;
	}
	hi->control_state |= SSI_CHANNEL_STATE_READING;
	dev_dbg(&hi->cl->device, "Issuing RX on control\n");
	msg = cs_claim_cmd(hi);
	spin_unlock(&hi->lock);

	msg->sgt.nents = 0;
	msg->complete = cs_hsi_peek_on_control_complete;
	ret = hsi_async_read(hi->cl, msg);
	if (ret)
		cs_hsi_control_read_error(hi, msg);
}