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Subject: RE: Possible Serial Kernel Bug
Date: Thu, 21 Feb 2008 10:21:10 -0600
Message-ID: <C35C6F42A97E0C468C32F3AEE46CFF6403C900FD@digiexch03.iodigi.ioroot.tld>
In-Reply-To: <47BDA02B.9090702@student.tuwien.ac.at>
Thread-Topic: Possible Serial Kernel Bug
thread-index: Ach0ov/PiSevpZpwS020RWeOwoXSdAAAhwKg
References: <C35C6F42A97E0C468C32F3AEE46CFF6403C07989@digiexch03.iodigi.ioroot.tld> <47BDA02B.9090702@student.tuwien.ac.at>
From: "Raynard Brown" <Raynard.Brown@iongeo.com>
Importance: normal
To: "Oliver Martin" <oliver.martin@student.tuwien.ac.at>
Cc: <linux-kernel@vger.kernel.org>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1764
Lines: 38

Oliver,

I tried disabling flow control on the server with stty -F /dev/ttyS2
-crtscts, then echo sometext > /dev/ttyS2, but I get the same results
the echo command freezes will trying to send data to the client.

Raynard

-----Original Message-----
From: Oliver Martin [mailto:leromarinvit@gmail.com] On Behalf Of Oliver
Martin
Sent: Thursday, February 21, 2008 10:01 AM
To: Raynard Brown
Cc: linux-kernel@vger.kernel.org
Subject: Re: Possible Serial Kernel Bug

Raynard Brown schrieb:
> 0: uart:16550A port:000003F8 irq:4	tx:72	rx:6
> 1: uart:16550A port:000002F8 irq:3	tx:59	rx:6
> 2: uart:16550A port:000003E8 irq:11	tx:0	rx:0 RTS|DTR
> 3: uart:16550A port:000002E8 irq:10	tx:0	rx:0 RTS|DTR
> 4: uart:16550A port:000004F8 irq:0	tx:59	rx:6
> 
                                                      ^^^^^^^
Could it be that hardware flow control is enabled on the server, while 
it is disabled on the other side? What happens if you disable it with 
stty -F /dev/ttySX -rtscts?

Oliver

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