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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: markh@compro.net
Cc: Linux-kernel <linux-kernel@vger.kernel.org>,
	Mark Hounschell <dmarkh@cfl.rr.com>
Subject: Re: tty  TTY_HUPPED anomaly
Date: Fri, 23 Dec 2011 20:40:15 +0000	[thread overview]
Message-ID: <20111223204015.541924f2@pyx> (raw)
In-Reply-To: <4EF4CC92.5090502@compro.net>


> I turned the TTY_DEBUG_HANGUP and added some additional printks. You see 
> below the first port works just fine but the second fails because 
> something is calling the tty_hangup function around 70usecs after I open 
> the device???
> What and Why???

The driver will be - and because the carrier dropped and the HUPCL flag
is set on the port.

Alan

  reply	other threads:[~2011-12-23 20:40 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-23 14:51 tty TTY_HUPPED anomaly Mark Hounschell
2011-12-23 18:46 ` Mark Hounschell
2011-12-23 20:40   ` Alan Cox [this message]
2012-01-04 15:59     ` Mark Hounschell
2012-01-04 16:27       ` Alan Cox
2012-01-04 18:59         ` Mark Hounschell
2012-01-04 20:28           ` Jiri Slaby
2012-01-04 20:35             ` Mark Hounschell
2012-01-04 20:40               ` Jiri Slaby
2012-01-04 20:50                 ` Mark Hounschell

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