+/**
+ * struct lkl_host_operations - host operations used by the Linux kernel
+ *
+ * These operations must be provided by a host library or by the application
+ * itself.
+ *
+ */
+struct lkl_host_operations {
+};

IIRC, in previous reviews we discussed this and you said you'd look at
just making those extern functions, instead of function pointers, since
realistically there's no use in being able to switch these at runtime.
What happened to that? Any particular reason not to?

johannes