From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 22 Mar 2003 04:21:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 22 Mar 2003 04:21:48 -0500 Received: from newglider.melbpc.org.au ([203.12.152.9]:37644 "EHLO relay9.melbpc.org.au") by vger.kernel.org with ESMTP id ; Sat, 22 Mar 2003 04:21:47 -0500 Message-ID: <3E7C2BA0.4040100@melbpc.org.au> Date: Sat, 22 Mar 2003 20:23:44 +1100 From: Tim Josling Organization: Melbourne PC User Group User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.1) Gecko/20020830 X-Accept-Language: en, en-us MIME-Version: 1.0 To: Jeremy Fitzhardinge CC: Linux Kernel List , Philip.Blundell@pobox.com, linux-parport@torque.net Subject: Re: [PATCH] to drivers/parport/ieee1284_ops.c to fix timing dependent hang References: <3E782567.3020008@melbpc.org.au> <1048278154.6017.2.camel@ixodes.goop.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-RAVMilter-Version: 8.3.4(snapshot 20020706) (relay9) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Jeremy, Good to know someone has read my email. According to my reading of the code, it should only happen in polled mode, but I have only one week of experience looking at kernel source. So it should be a work-around, assuming interrupts work on the parallel port on your system :-). It is an very vexing problem, as I'm sure you know. By the way, LJ1100s tend to get page feeding problems about the time the warranty runs out, but HP has a free kit you can order to fix the problem. Tim Josling Jeremy Fitzhardinge wrote: > On Wed, 2003-03-19 at 00:08, Tim Josling wrote: > >>I have an HP1100 printer and since I upgraded to a faster CPU the >>printer has started hanging. The problem persisteed across 2.0 2.2 and >>2.4 kernel versions. I am running Red Hat Linux 8.0 on a Compaq Armada E500. >> >>The problem occurs intermittently. The symptom is that the 'buffer >>contains data' light stays on on the printer, but data transfer stops. > > > Ah, so that's why that happens. I've been getting the same thing with > my LJ1100. > > Is this just in polled mode? Does using interrupts constitute a > work-around for the hang? > > J > > >