CFG_SPACE_SIZE
.start = 0xf0000000 - MAX_DEVICES * CFG_SPACE_SIZE,
if (WARN_ON(size > CFG_SPACE_SIZE || offset % CFG_SPACE_SIZE))
if (offset / CFG_SPACE_SIZE < MAX_DEVICES) {
*priv = &um_pci_devices[offset / CFG_SPACE_SIZE];
start = virt_cfgspace_resource.start + i * CFG_SPACE_SIZE;
um_pci_devices[i].iomem = ioremap(start, CFG_SPACE_SIZE);