int register_memory(struct memory_block *memory)
{
	int ret;

	memory->dev.bus = &memory_subsys;
	memory->dev.id = memory->start_section_nr / sections_per_block;
	memory->dev.release = memory_block_release;
	memory->dev.groups = memory_memblk_attr_groups;
	memory->dev.offline = memory->state == MEM_OFFLINE;

	ret = device_register(&memory->dev);
	if (ret) {
		put_device(&memory->dev);
		return ret;
	}
	ret = xa_err(xa_store(&memory_blocks, memory->dev.id, memory,
			      GFP_KERNEL));
	if (ret) {
		put_device(&memory->dev);
		device_unregister(&memory->dev);
	}
	return ret;
}
int register_memory(struct memory_block *memory)
{
	int ret;

	memory->dev.bus = &memory_subsys;
	memory->dev.id = memory->start_section_nr / sections_per_block;
	memory->dev.release = memory_block_release;
	memory->dev.groups = memory_memblk_attr_groups;
	memory->dev.offline = memory->state == MEM_OFFLINE;

	ret = device_register(&memory->dev);
	if (ret) {
		put_device(&memory->dev);
		return ret;
	}
	ret = xa_err(xa_store(&memory_blocks, memory->dev.id, memory,
			      GFP_KERNEL));
	if (ret) {
		put_device(&memory->dev);
		device_unregister(&memory->dev);
	}
	return ret;
}