linux-kernel - RE: Possible Serial Kernel Bug

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Message-ID: <C35C6F42A97E0C468C32F3AEE46CFF6403C900FD@digiexch03.iodigi.ioroot.tld>
Date:	Thu, 21 Feb 2008 10:21:10 -0600
From:	"Raynard Brown" <Raynard.Brown@...geo.com>
To:	"Oliver Martin" <oliver.martin@...dent.tuwien.ac.at>
Cc:	<linux-kernel@...r.kernel.org>
Subject: RE: Possible Serial Kernel Bug

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@...il.com] On Behalf Of Oliver
Martin
Sent: Thursday, February 21, 2008 10:01 AM
To: Raynard Brown
Cc: linux-kernel@...r.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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