Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S942047AbXHMVhK (ORCPT ); Mon, 13 Aug 2007 17:37:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758344AbXHMVgr (ORCPT ); Mon, 13 Aug 2007 17:36:47 -0400 Received: from atlrel9.hp.com ([156.153.255.214]:56977 "EHLO atlrel9.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752582AbXHMVgo (ORCPT ); Mon, 13 Aug 2007 17:36:44 -0400 From: Bjorn Helgaas To: Michael Mauch Subject: Re: Serial ports rearranged in 2.6.22? Date: Mon, 13 Aug 2007 15:34:14 -0600 User-Agent: KMail/1.9.6 Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, "Yinghai Lu" References: <20070810213925.GB10855@elmicha> <86802c440708102154r59e1acbj90fa0d5b73197fb9@mail.gmail.com> <20070811154925.GA9618@elmicha> In-Reply-To: <20070811154925.GA9618@elmicha> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708131534.15235.bjorn.helgaas@hp.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1382 Lines: 36 On Saturday 11 August 2007 09:49:25 am Michael Mauch wrote: > Yinghai Lu wrote: > > > On 8/10/07, Michael Mauch wrote: > > > until 2.6.21, I had the normal assignments for ttyS0 and ttyS1: > > > > > > 00:08: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A > > > 00:09: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A > > > > > > With 2.6.22 I get the names <-> ports/irqs the other way around: > > > > > > 00:08: ttyS0 at I/O 0x2f8 (irq = 3) is a 16550A > > > 00:09: ttyS1 at I/O 0x3f8 (irq = 4) is a 16550A > > > ... > > http://lkml.org/lkml/2007/7/25/455 > > Thanks - I applied that patch and the names are back to normal again: > > 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A > 00:07: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A Just FYI, the patch Yinghai mentioned above was experimental, and we decided it was the wrong solution. For 2.6.22, the easiest workaround is to boot with the "legacy_serial.force" option. For 2.6.23, we reverted my patch that caused the names to be swapped: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=57d4810ea0d9ca58a7bcc1336607f0cede0a2abf Bjorn - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/