int vme_master_set()

in vme.c [565:598]

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

int vme_master_set(struct vme_resource *resource, int enabled,
	unsigned long long vme_base, unsigned long long size, u32 aspace,
	u32 cycle, u32 dwidth)
{
	struct vme_bridge *bridge = find_bridge(resource);
	struct vme_master_resource *image;
	int retval;

	if (resource->type != VME_MASTER) {
		printk(KERN_ERR "Not a master resource\n");
		return -EINVAL;
	}

	image = list_entry(resource->entry, struct vme_master_resource, list);

	if (!bridge->master_set) {
		printk(KERN_WARNING "vme_master_set not supported\n");
		return -EINVAL;
	}

	if (!(((image->address_attr & aspace) == aspace) &&
		((image->cycle_attr & cycle) == cycle) &&
		((image->width_attr & dwidth) == dwidth))) {
		printk(KERN_WARNING "Invalid attributes\n");
		return -EINVAL;
	}

	retval = vme_check_window(aspace, vme_base, size);
	if (retval)
		return retval;

	return bridge->master_set(image, enabled, vme_base, size, aspace,
		cycle, dwidth);
}