From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 4 Sep 2001 07:21:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 4 Sep 2001 07:21:13 -0400 Received: from alpha.netvision.net.il ([194.90.1.13]:56585 "EHLO alpha.netvision.net.il") by vger.kernel.org with ESMTP id ; Tue, 4 Sep 2001 07:21:04 -0400 Message-ID: <3B94B93B.2B907DCF@netvision.net.il> Date: Tue, 04 Sep 2001 14:21:31 +0300 From: Michael Ben-Gershon Organization: My Office X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.9 i686) X-Accept-Language: en-GB, en MIME-Version: 1.0 To: Tim Waugh , linux-kernel@vger.kernel.org Subject: Re: lpr to HP laserjet stalls In-Reply-To: <3B93E289.7F121DE9@netvision.net.il> <20010903221142.J20060@redhat.com> <3B94B4E7.701C76FA@netvision.net.il> <20010904121523.Q20060@redhat.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Tim Waugh wrote: > > On Tue, Sep 04, 2001 at 02:03:03PM +0300, Michael Ben-Gershon wrote: > > > Sep 3 00:33:29 linux kernel: parport0: PC-style at 0x378 (0x778) > > [PCSPP,TRISTATE,COMPAT,EPP,ECP] > > This is 'polling' mode. So, three code paths left to try. :-) > > > As far as I can see, although IRQ 7 is detected, it is not used, so > > I don't see how starting parport with irq=none would help. Could > > CONFIG_PARPORT_PC_FIFO actually improve matters in such a situation? > > It could, yes. > > I certainly wouldn't have expected stalls in polling mode though. I > wonder what's up with that. > > It would be very useful to see if there's any change with (a) > interrupt-driven, (b) PIO, or (c) DMA printing. Please excuse my ignorance, but if it detects the IRQ and does not use it, how is it possible to set up interrupt-driven mode? I am not really a 'kernel hacker', but am posting here as I have not managed to solve the problem elsewhere. So please tell me exactly what to put on the kernel command line at start-up. Many thanks, Michael Ben-Gershon mybg@netvision.net.il