static int intc_set_type()

in intc/chip.c [174:198]

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

static int intc_set_type(struct irq_data *data, unsigned int type)
{
	unsigned int irq = data->irq;
	struct intc_desc_int *d = get_intc_desc(irq);
	unsigned char value = intc_irq_sense_table[type & IRQ_TYPE_SENSE_MASK];
	struct intc_handle_int *ihp;
	unsigned long addr;

	if (!value)
		return -EINVAL;

	value &= ~SENSE_VALID_FLAG;

	ihp = intc_find_irq(d->sense, d->nr_sense, irq);
	if (ihp) {
		/* PINT has 2-bit sense registers, should fail on EDGE_BOTH */
		if (value >= (1 << _INTC_WIDTH(ihp->handle)))
			return -EINVAL;

		addr = INTC_REG(d, _INTC_ADDR_E(ihp->handle), 0);
		intc_reg_fns[_INTC_FN(ihp->handle)](addr, ihp->handle, value);
	}

	return 0;
}