int slim_alloc_txn_tid()

in messaging.c [63:78]

• 15 lines of code
• 2 McCabe index (conditional complexity)

int slim_alloc_txn_tid(struct slim_controller *ctrl, struct slim_msg_txn *txn)
{
	unsigned long flags;
	int ret = 0;

	spin_lock_irqsave(&ctrl->txn_lock, flags);
	ret = idr_alloc_cyclic(&ctrl->tid_idr, txn, 1,
				SLIM_MAX_TIDS, GFP_ATOMIC);
	if (ret < 0) {
		spin_unlock_irqrestore(&ctrl->txn_lock, flags);
		return ret;
	}
	txn->tid = ret;
	spin_unlock_irqrestore(&ctrl->txn_lock, flags);
	return 0;
}