int intc_set_priority()

in intc/chip.c [129:154]

• 17 lines of code
• 6 McCabe index (conditional complexity)

int intc_set_priority(unsigned int irq, unsigned int prio)
{
	struct intc_desc_int *d = get_intc_desc(irq);
	struct irq_data *data = irq_get_irq_data(irq);
	struct intc_handle_int *ihp;

	if (!intc_get_prio_level(irq) || prio <= 1)
		return -EINVAL;

	ihp = intc_find_irq(d->prio, d->nr_prio, irq);
	if (ihp) {
		if (prio >= (1 << _INTC_WIDTH(ihp->handle)))
			return -EINVAL;

		intc_set_prio_level(irq, prio);

		/*
		 * only set secondary masking method directly
		 * primary masking method is using intc_prio_level[irq]
		 * priority level will be set during next enable()
		 */
		if (_INTC_FN(ihp->handle) != REG_FN_ERR)
			_intc_enable(data, ihp->handle);
	}
	return 0;
}