From: almesber@nessie.cs.id.ethz.ch (Werner Almesberger) Subject: Re: Experimental polling serial lines driver Date: Mon, 4 May 1992 09:11:59 GMT
In article <1992May3.163911.3675@bernina.ethz.ch> I wrote:
> There have been occasional lockups. Don't know whether they are
> still there. Opening the same port from another process seems to
> resolve the problem.
Those lockups were caused by my modem using DSR in much the same way
as DCD. This confused the "clever" trick to auto-detect devices that
support DSR flow control. There are probably many other modems that
do the same thing ...
Fix: in my serial.c, uses_dsr should be initialized to whatever is
appropriate for the local configuration (0 if hardware flow control
isn't really needed) and the automatic setting of uses_dsr in
serial_open should be removed.
- Werner
-- _________________________________________________________________________ / Werner Almesberger, ETH Zuerich, CH almesber@nessie.cs.id.ethz.ch / / IFW A44 Tel. +41 1 254 7213 almesberger@rzvax.ethz.ch / /_BITNET:_ALMESBER@CZHETH5A__HEPNET/CHADNET:_[20579::]57414::ALMESBERGER_/