ttyS0 problem in kernel 2.6.17 and 2.6.20.

Hi list!

I managed to get openzaurus-3.5.5 + kernel 2.6.20 running in my
poodle. Everything I usually use is working (opie+ratoc CFU1.1 usb
host controller + usb devices, and a lot of programs). But there is an
exception: ttyS0 serial console. With kernel 2.4.18 I was using the
serial console plus a particular cable
(http://serialio.com/products/adaptors/ZThinCable.php) to connect the
zaurus to a gps receiver (rs232). gpsd worked fine with that
configuration. Even I was able to use minicom to get some strings out
of the gps.
Now in kernel 2.6.20 (or 2.6.17) I don't get anything from the serial
port. There are no kernel errors or nothing. The problem is that I
don't receive any data from the serial port.
 I used minicom to try to comunicate to my gps. I configured all the
serial port settings (hardware and software flow control off, baud
rate, etc) in the right way.
 I also play around with stty with no luck.
If I flash back my zaurus to any openzaurus with kernel 2.4 the
communication starts to work again.
I think there is a connection with this problem in here:
http://sourceforge.net/mailarchive/message.php?msg_id=45BCA447.7050502%40alumni.cse.cuhk.edu.hk
but not sure.
Is this a bug of the PXA serial driver in the kernel? (it looks like)
Anybody else with the same problem?
Any ideas what could be wrong?

PS: I disabled the ttyS0 console connection in the inittab and then
init q to reload the new configuration.

Regards,
Federico Ruiz.

-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV