int pnpacpi_encode_resources()

in pnpacpi/rsparser.c [876:947]

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

int pnpacpi_encode_resources(struct pnp_dev *dev, struct acpi_buffer *buffer)
{
	int i = 0;
	/* pnpacpi_build_resource_template allocates extra mem */
	int res_cnt = (buffer->length - 1) / sizeof(struct acpi_resource) - 1;
	struct acpi_resource *resource = buffer->pointer;
	unsigned int port = 0, irq = 0, dma = 0, mem = 0;

	pnp_dbg(&dev->dev, "encode %d resources\n", res_cnt);
	while (i < res_cnt) {
		switch (resource->type) {
		case ACPI_RESOURCE_TYPE_IRQ:
			pnpacpi_encode_irq(dev, resource,
			       pnp_get_resource(dev, IORESOURCE_IRQ, irq));
			irq++;
			break;

		case ACPI_RESOURCE_TYPE_DMA:
			pnpacpi_encode_dma(dev, resource,
				pnp_get_resource(dev, IORESOURCE_DMA, dma));
			dma++;
			break;
		case ACPI_RESOURCE_TYPE_IO:
			pnpacpi_encode_io(dev, resource,
				pnp_get_resource(dev, IORESOURCE_IO, port));
			port++;
			break;
		case ACPI_RESOURCE_TYPE_FIXED_IO:
			pnpacpi_encode_fixed_io(dev, resource,
				pnp_get_resource(dev, IORESOURCE_IO, port));
			port++;
			break;
		case ACPI_RESOURCE_TYPE_MEMORY24:
			pnpacpi_encode_mem24(dev, resource,
				pnp_get_resource(dev, IORESOURCE_MEM, mem));
			mem++;
			break;
		case ACPI_RESOURCE_TYPE_MEMORY32:
			pnpacpi_encode_mem32(dev, resource,
				pnp_get_resource(dev, IORESOURCE_MEM, mem));
			mem++;
			break;
		case ACPI_RESOURCE_TYPE_FIXED_MEMORY32:
			pnpacpi_encode_fixed_mem32(dev, resource,
				pnp_get_resource(dev, IORESOURCE_MEM, mem));
			mem++;
			break;
		case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
			pnpacpi_encode_ext_irq(dev, resource,
				pnp_get_resource(dev, IORESOURCE_IRQ, irq));
			irq++;
			break;
		case ACPI_RESOURCE_TYPE_START_DEPENDENT:
		case ACPI_RESOURCE_TYPE_END_DEPENDENT:
		case ACPI_RESOURCE_TYPE_VENDOR:
		case ACPI_RESOURCE_TYPE_END_TAG:
		case ACPI_RESOURCE_TYPE_ADDRESS16:
		case ACPI_RESOURCE_TYPE_ADDRESS32:
		case ACPI_RESOURCE_TYPE_ADDRESS64:
		case ACPI_RESOURCE_TYPE_EXTENDED_ADDRESS64:
		case ACPI_RESOURCE_TYPE_GENERIC_REGISTER:
		default:	/* other type */
			dev_warn(&dev->dev,
				 "can't encode unknown resource type %d\n",
				 resource->type);
			return -EINVAL;
		}
		resource++;
		i++;
	}
	return 0;
}