Noticed by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Fixed By: Juergen E. Fischer <fischer@linux-buechse.de>

On Sat, Jan 24, 2004 at 15:02:12 +0100, Guennadi Liakhovetski wrote:
> Correct and forgive me if I am wrong, it looks like you are now poking at
> ports without requesting them - in *_porttest. Is it a good idea?

Ouch.  No, of course not, you are right.  Thanks for pointing.  I
thought I had moved the port testing to aha152x_probe_one...

Following patch cleans that up.

The port test during autoconfiguration was also done without requesting
the region first and there was a bug in auto configuration of a TC1550
controller (both even before the patch).