static void decode_irq_flags()

in pnpacpi/rsparser.c [18:51]

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

static void decode_irq_flags(struct pnp_dev *dev, int flags, u8 *triggering,
			     u8 *polarity, u8 *shareable)
{
	switch (flags & (IORESOURCE_IRQ_LOWLEVEL | IORESOURCE_IRQ_HIGHLEVEL |
			 IORESOURCE_IRQ_LOWEDGE  | IORESOURCE_IRQ_HIGHEDGE)) {
	case IORESOURCE_IRQ_LOWLEVEL:
		*triggering = ACPI_LEVEL_SENSITIVE;
		*polarity = ACPI_ACTIVE_LOW;
		break;
	case IORESOURCE_IRQ_HIGHLEVEL:
		*triggering = ACPI_LEVEL_SENSITIVE;
		*polarity = ACPI_ACTIVE_HIGH;
		break;
	case IORESOURCE_IRQ_LOWEDGE:
		*triggering = ACPI_EDGE_SENSITIVE;
		*polarity = ACPI_ACTIVE_LOW;
		break;
	case IORESOURCE_IRQ_HIGHEDGE:
		*triggering = ACPI_EDGE_SENSITIVE;
		*polarity = ACPI_ACTIVE_HIGH;
		break;
	default:
		dev_err(&dev->dev, "can't encode invalid IRQ mode %#x\n",
			flags);
		*triggering = ACPI_EDGE_SENSITIVE;
		*polarity = ACPI_ACTIVE_HIGH;
		break;
	}

	if (flags & IORESOURCE_IRQ_SHAREABLE)
		*shareable = ACPI_SHARED;
	else
		*shareable = ACPI_EXCLUSIVE;
}