static int arpc_sync()

in es2.c [971:1022]

• 43 lines of code
• 10 McCabe index (conditional complexity)

static int arpc_sync(struct es2_ap_dev *es2, u8 type, void *payload,
		     size_t size, int *result, unsigned int timeout)
{
	struct arpc *rpc;
	unsigned long flags;
	int retval;

	if (result)
		*result = 0;

	rpc = arpc_alloc(payload, size, type);
	if (!rpc)
		return -ENOMEM;

	spin_lock_irqsave(&es2->arpc_lock, flags);
	arpc_add(es2, rpc);
	spin_unlock_irqrestore(&es2->arpc_lock, flags);

	retval = arpc_send(es2, rpc, timeout);
	if (retval)
		goto out_arpc_del;

	retval = wait_for_completion_interruptible_timeout(
						&rpc->response_received,
						msecs_to_jiffies(timeout));
	if (retval <= 0) {
		if (!retval)
			retval = -ETIMEDOUT;
		goto out_arpc_del;
	}

	if (rpc->resp->result) {
		retval = -EREMOTEIO;
		if (result)
			*result = rpc->resp->result;
	} else {
		retval = 0;
	}

out_arpc_del:
	spin_lock_irqsave(&es2->arpc_lock, flags);
	arpc_del(es2, rpc);
	spin_unlock_irqrestore(&es2->arpc_lock, flags);
	arpc_free(rpc);

	if (retval < 0 && retval != -EREMOTEIO) {
		dev_err(&es2->usb_dev->dev,
			"failed to execute ARPC: %d\n", retval);
	}

	return retval;
}