II20K_SIZE
if (!membase || (membase & ~(0x100000 - II20K_SIZE))) {
if (!request_mem_region(membase, II20K_SIZE, dev->board_name)) {
dev->board_name, membase, II20K_SIZE);
dev->mmio = ioremap(membase, II20K_SIZE);
release_mem_region(dev->iobase, II20K_SIZE);