sys_create_module on 2.0.21 returned addresses around x'01814000'. pre-2.1.0
returns addresses around x'c1814000' which are treated as negative results
and set the error flag. insmod thinks it got a large error number, which
does not seem to map to the address in any sensible way. Might have to
change syscalls that return kernel addresses to return the address in a
parameter rather than return(addr).
Separate problem, trivial change required to pcmcia-cs-2.8.22/Configure,
change "1.99|2.0)" to "1.99|2.0|2.1)".