[Bug 49752] Mikster MPC4 System: 'Selected serial port not exist'

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49752

--- Comment #16 from Roman Pišl  ---
Created attachment 69174
  --> https://bugs.winehq.org/attachment.cgi?id=69174
Hack#2 - avoid fiddling with control flow

These USB converters are often a combo of FT232 and MAX485 that just works when
plugged in and correct baud rate is selected. Try to avoid fiddling with
setting of control flow at all with this patch. It is a blind shot again, since
we don't know if the serial line is still the cause of the problem.