static int pci_acpi_root_prepare_resources()

in pci/pci.c [234:269]

• 30 lines of code
• 7 McCabe index (conditional complexity)

static int pci_acpi_root_prepare_resources(struct acpi_pci_root_info *ci)
{
	struct device *dev = &ci->bridge->dev;
	struct pci_root_info *info;
	struct resource *res;
	struct resource_entry *entry, *tmp;
	int status;

	status = acpi_pci_probe_root_resources(ci);
	if (status > 0) {
		info = container_of(ci, struct pci_root_info, common);
		resource_list_for_each_entry_safe(entry, tmp, &ci->resources) {
			res = entry->res;
			if (res->flags & IORESOURCE_MEM) {
				/*
				 * HP's firmware has a hack to work around a
				 * Windows bug. Ignore these tiny memory ranges.
				 */
				if (resource_size(res) <= 16) {
					resource_list_del(entry);
					insert_resource(&iomem_resource,
							entry->res);
					resource_list_add_tail(entry,
							&info->io_resources);
				}
			} else if (res->flags & IORESOURCE_IO) {
				if (resource_is_pcicfg_ioport(entry->res))
					resource_list_destroy_entry(entry);
				else if (add_io_space(dev, info, entry))
					resource_list_destroy_entry(entry);
			}
		}
	}

	return status;
}