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From: Hans Petter Selasky <hselasky@c2i.net>
To: freebsd-usb@freebsd.org,
 gabor@sentex.net
Date: Thu, 4 Dec 2008 21:41:18 +0100
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Subject: Re: ucom serial bug?
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On Thursday 04 December 2008, Gabor wrote:
> Hi Warner,
>
> this patch did not seem to fix the issue.  In fact this time after
> unloading the module and reloading it, and then checking the carrier
> doesn't raise carrier even on the first try.
>

Can it be that the new mpsafetty layer does not remember the TTY state (MSR 
bits) betweeen two open/close sessions ?

The uftdi driver will only report deltas in the MSR register.

--HPS