http://bugs.winehq.org/show_bug.cgi?id=8783
--- Comment #15 from tom schorpp thomas.schorpp@googlemail.com 2008-02-27 10:39:07 --- cp2101.c investigated: still based on the primitive silabs linux driver: extension for counters for TIOCGICOUNT maybe possible but extension for TIOCMIWAIT would need synchronization, adaption to the actual kernel-api and so a complete rewrite from scratch in the style of io_ti.c driver e.g. so NOTOURBUG for wine, driver issue.