question about crypto module dependency

Hello,

I'm wondering how this scenario is supposed to work: let's say a
module A uses 'crc32c' function in lib/libcrc32c.c. In its turn this
function calls crypto_shash_update() which is exported by
crypto/shash.c. But now no module implementing "crc32c" has still been
loaded although crc32c.ko is available. Therefore the initial load of
module A fails although all required modules by the system are
present.

If the above is correct, how should it be handled ?

Thanks
-- 
Francis