static int mf624_setup_mem()

in uio_mf624.c [117:133]

• 16 lines of code
• 3 McCabe index (conditional complexity)

static int mf624_setup_mem(struct pci_dev *dev, int bar, struct uio_mem *mem, const char *name)
{
	resource_size_t start = pci_resource_start(dev, bar);
	resource_size_t len = pci_resource_len(dev, bar);

	mem->name = name;
	mem->addr = start & PAGE_MASK;
	mem->offs = start & ~PAGE_MASK;
	if (!mem->addr)
		return -ENODEV;
	mem->size = ((start & ~PAGE_MASK) + len + PAGE_SIZE - 1) & PAGE_MASK;
	mem->memtype = UIO_MEM_PHYS;
	mem->internal_addr = pci_ioremap_bar(dev, bar);
	if (!mem->internal_addr)
		return -ENODEV;
	return 0;
}