Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753409AbYJ1Qis (ORCPT ); Tue, 28 Oct 2008 12:38:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752132AbYJ1Qik (ORCPT ); Tue, 28 Oct 2008 12:38:40 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:50472 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751954AbYJ1Qij (ORCPT ); Tue, 28 Oct 2008 12:38:39 -0400 Date: Tue, 28 Oct 2008 09:37:55 -0700 (PDT) From: Linus Torvalds To: Helge Hafting , Alan Cox cc: Linux Kernel Mailing List Subject: Re: Linux 2.6.28-rc2 i/o error on /dev/ttyUSB0 In-Reply-To: <4906F54A.7020909@aitel.hist.no> Message-ID: References: <4906F54A.7020909@aitel.hist.no> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 978 Lines: 27 On Tue, 28 Oct 2008, Helge Hafting wrote: > > I have gps unit connected via USB-serial (pl2303). > This does not work with 2.6.28-rc2 > > 2.6.27 is fine. I skipped 2.6.28-rc1 due to known breakage. > I can test it if that might help. Don't bother with -rc1, but bisecting it may be relevant. You might of course hit the breakage, but it's fairly unlikely. That said, the whole "error on USB serial device" sounds like it's squarely in the "oops, kref's are screwed up" corner, and you should talk to Alan about your particular USB dongle. I bet that bisection would just show you one of the kref commits (eg 4a90f09b "tty: usb-serial krefs" or maybe 7d7b93c14 "tty: kref the tty driver object"). Alan, pls help. Linus -- 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/