int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
{
	int rc, irq, trigger, polarity;

	if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
		*irqp = gsi;
		return 0;
	}

	rc = acpi_get_override_irq(gsi, &trigger, &polarity);
	if (rc == 0) {
		trigger = trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
		polarity = polarity ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
		irq = acpi_register_gsi(NULL, gsi, trigger, polarity);
		if (irq >= 0) {
			*irqp = irq;
			return 0;
		}
	}

	return -1;
}
Unknown