static int add_virq_to_pirq()

in intc/virq.c [84:108]

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

static int add_virq_to_pirq(unsigned int irq, unsigned int virq)
{
	struct intc_virq_list *entry;
	struct intc_virq_list **last = NULL;

	/* scan for duplicates */
	for_each_virq(entry, irq_get_handler_data(irq)) {
		if (entry->irq == virq)
			return 0;
		last = &entry->next;
	}

	entry = kzalloc(sizeof(struct intc_virq_list), GFP_ATOMIC);
	if (!entry)
		return -ENOMEM;

	entry->irq = virq;

	if (last)
		*last = entry;
	else
		irq_set_handler_data(irq, entry);

	return 0;
}