http://bugs.winehq.org/show_bug.cgi?id=7526
------- Additional Comments From roger@eskimo.com 2007-09-03 03:57 ------- I have tried wine-0.9.2
And have found this bug continues to hinder only my USB to Serial device using the mct_u232 driver.
I can use a regular DB9 cable connecting to the serial ports.
From what I've researched, this "fixme" is normal when communicating at most
times too. From rumor, and from my point of view after using debug=1 with the mct_u232 driver, the USB to Serial device is sending and recieving ok, but somewhere there's a "-2" still returning to the Windows application, or the application is assuming a "-2" return.