linux-kernel - Re: ttyACM0: 2.6.30-rc7 dies on device disconnect, strange echo (regressions)

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Date:	Tue, 2 Jun 2009 11:19:13 +0200
From:	Pavel Machek <pavel@....cz>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	kernel list <linux-kernel@...r.kernel.org>,
	Greg KH <greg@...ah.com>, "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: ttyACM0: 2.6.30-rc7 dies on device disconnect, strange echo
	(regressions)

On Mon 2009-06-01 14:34:56, Oliver Neukum wrote:
> Am Montag, 1. Juni 2009 13:31:51 schrieb Pavel Machek:
> > Steps to reproduce:
> >
> > minicom /dev/ttyACM0
> >
> > Bug #2: try to interactivelly communicate with the other
> > device. Notice that characters are echoed one character too late. You
> > type "hello", but only "hell" appears. You press "!", "o" appears.
> >
> > Bug #1: while minicom is still connected, pull the USB cable. Machine
> > locks hard.
> 
> I can replicate neither bug with 2.6.30-rc7. Can you replicate it with
> anything but openMOKO?

So AT commands echo properly on USB modem or something? Bad :-(.

I'm afraid I do not have another ACM device near me. I guess going
through cdc-acm.c 's history would be relevant?
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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