I think this has already been fixed
PCMCIA Serial and Modem Issues
O2Micro OZ6836/OZ6860 PCI-to-CardBus (Michael Larsen)
Date: 1999, Nov 23
From: David Hinds <email@example.com>
This is almost certainly fixed in the 3.1.4 driver package.
to: "I think this has already been fixed"