pci_find_resource
if (pci_find_resource(pdev, &res[i]))
dest->parent = pci_find_resource(to_pci_dev(parent), dest);
EXPORT_SYMBOL(pci_find_resource);
r = pci_find_resource(pdev, res);
pr = pci_find_resource(pdev, &r);
struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res);