From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joseph Salisbury Subject: [v3.9] [v3.10] [Regression] serial: 8250_pci: add support for another kind of NetMos Technology PCI 9835 Multi-I/O Controller Date: Mon, 01 Jul 2013 12:14:45 -0400 Message-ID: <51D1AAF5.5050004@canonical.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from youngberry.canonical.com ([91.189.89.112]:59299 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752039Ab3GAQOx (ORCPT ); Mon, 1 Jul 2013 12:14:53 -0400 Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: udknight@gmail.com Cc: Greg KH , jslaby@suse.cz, alan@linux.intel.com, matts@commtech-fastcom.com, wfp5p@virginia.edu, tklauser@distanz.ch, linux-serial@vger.kernel.org, LKML Hi Wang, A bug was opened against the Ubuntu kernel[0]. After a kernel bisect, it was found that reverting the following commit resolved this bug: commit 8d2f8cd424ca0b99001f3ff4f5db87c4e525f366 Author: Wang YanQing Date: Fri Mar 1 11:47:20 2013 +0800 serial: 8250_pci: add support for another kind of NetMos Technology PCI 9835 Multi-I/O Controller The regression was introduced as of v3.9-rc3 and still exists in the current Mainline tree. It was also propagated to the stable trees. The patch causes the device to use the serial module instead of parport_serial. Maybe the the quirk in ~drivers/pci/quirks.c quirk_netmos() needs to be modified? I see that you are the author of this patch, so I wanted to run this by you. I was thinking of requesting a revert, but I wanted to get your feedback first. Thanks, Joe