From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261688AbULZQUt (ORCPT ); Sun, 26 Dec 2004 11:20:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261693AbULZQUt (ORCPT ); Sun, 26 Dec 2004 11:20:49 -0500 Received: from cimice4.lam.cz ([212.71.168.94]:12418 "EHLO beton.cybernet.src") by vger.kernel.org with ESMTP id S261688AbULZQUo (ORCPT ); Sun, 26 Dec 2004 11:20:44 -0500 Date: Sun, 26 Dec 2004 16:21:07 +0000 From: Karel Kulhavy To: "Dr. David Alan Gilbert" Cc: linux-kernel@vger.kernel.org Subject: Re: How to hang 2.6.9 using serial port and FB console Message-ID: <20041226162107.GB5859@beton.cybernet.src> References: <20041226143118.GA5169@beton.cybernet.src> <20041226145334.GC1668@gallifrey> <20041226154321.GA5519@beton.cybernet.src> <20041226155350.GD1668@gallifrey> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041226155350.GD1668@gallifrey> User-Agent: Mutt/1.4.2.1i X-Orientation: Gay Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Dec 26, 2004 at 03:53:50PM +0000, Dr. David Alan Gilbert wrote: > * Karel Kulhavy (clock@twibright.com) wrote: > > On Sun, Dec 26, 2004 at 02:53:35PM +0000, Dr. David Alan Gilbert wrote: > > > Hi Karel, > > > I wonder - is the board sending a 'break' signal to the PC? I just > > > > What board do you mean? > > Your IR interface board. The IR interface isn't a board. It's a HSDL3612 with 2 capacitors and one resistor soldered in a box according to the recommended wiring from datasheet, so technically, it's not a board, but an airwire construction ;-) However it is not sending breaks, but rather various characters. As the kernel seems to be set internally for echo cahracters going into the computer on the transmit line again, and the characters are echoed by the infrared receiver during transmission too, a character stream cycles infinitely there. However kernel shouldn't hang even if you wired the serial input to an alien spacecraft. CL<