From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Yinghai Lu" Subject: Re: Serial ports rearranged in 2.6.22? Date: Fri, 10 Aug 2007 21:54:02 -0700 Message-ID: <86802c440708102154r59e1acbj90fa0d5b73197fb9@mail.gmail.com> References: <20070810213925.GB10855@elmicha> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from wa-out-1112.google.com ([209.85.146.178]:45039 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751160AbXHKEyE (ORCPT ); Sat, 11 Aug 2007 00:54:04 -0400 Received: by wa-out-1112.google.com with SMTP id v27so1110717wah for ; Fri, 10 Aug 2007 21:54:03 -0700 (PDT) In-Reply-To: <20070810213925.GB10855@elmicha> Content-Disposition: inline Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Bjorn Helgaas On 8/10/07, Michael Mauch wrote: > Hi, > > 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 > > Is this supposed to be that way? Should we reassign these names with > udev? udev-114 doesn't seem to have built-in rules to assign the > traditional names. > > Or could it be related to some brokeness in my BIOS (ACPI/PNP)? > > I'm using the 8250_pnp module (and it's the same with builtin serial > modules). I made sure that I did not accidentally change the BIOS > settings for the serial ports. > > I'm using Gentoo, but on the lirc list was a Fedora user with the same > symptoms. http://lkml.org/lkml/2007/7/25/455 YH