From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Mauch Subject: Re: Serial ports rearranged in 2.6.22? Date: Tue, 14 Aug 2007 00:28:00 +0200 Message-ID: <20070813222800.GB25159@elmicha> References: <20070810213925.GB10855@elmicha> <86802c440708102154r59e1acbj90fa0d5b73197fb9@mail.gmail.com> <20070811154925.GA9618@elmicha> <200708131534.15235.bjorn.helgaas@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail.gmx.net ([213.165.64.20]:43568 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1760696AbXHMW2E (ORCPT ); Mon, 13 Aug 2007 18:28:04 -0400 Content-Disposition: inline In-Reply-To: <200708131534.15235.bjorn.helgaas@hp.com> Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Bjorn Helgaas Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, Yinghai Lu Bjorn Helgaas wrote: > On Saturday 11 August 2007 09:49:25 am Michael Mauch wrote: > > Yinghai Lu wrote: > > > > > On 8/10/07, Michael Mauch wrote: > > > > > > > > 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. Ah, ok, and load the legacy_serial module. Going from built-in serial to modules I was already challenged to find serial_core, 8250, 8250_pnp and/or 8250_pci (the help in "make menuconfig" does not seem to show the help that is written in the Kconfig file for 8250_pnp and 8250_pci). > 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 Thanks for the information - I wondered how you decided. What about 2.6.22.x? Or should the distro kernels use that revert patch for their stable 2.6.22 kernels? Regards... Michael