Here is a patch to add class support to zftape-init.c:

MODULE_DESCRIPTION(ZFTAPE_VERSION " - "
                   "VFS interface for the Linux floppy tape driver. "
                   "Support for QIC-113 compatible volume table "
                   "and builtin compression (lzrw3 algorithm)");

I have verified it compiles but do not have the hardware to test it.