From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755129AbZBTHmY (ORCPT ); Fri, 20 Feb 2009 02:42:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753107AbZBTHmQ (ORCPT ); Fri, 20 Feb 2009 02:42:16 -0500 Received: from hosted05.westnet.com.au ([203.10.1.219]:36754 "EHLO hosted05.westnet.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752665AbZBTHmP (ORCPT ); Fri, 20 Feb 2009 02:42:15 -0500 From: Mike Lampard Reply-To: mike@mtgambier.net To: linux-kernel@vger.kernel.org Subject: Re: long-term regression with some usb mass storage devices Date: Fri, 20 Feb 2009 18:11:52 +1030 User-Agent: KMail/1.11.0 (Linux/2.6.28.3-desktop-1mnb; KDE/4.2.0; x86_64; ; ) Cc: stern@rowland.harvard.edu References: <200902201717.43522.mike@mtgambier.net> In-Reply-To: <200902201717.43522.mike@mtgambier.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200902201811.52801.mike@mtgambier.net> X-PMX-Branch: TNG-Outgoing Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org added CC On Fri, 20 Feb 2009 05:17:42 pm Mike Lampard wrote: > Hi All, > > I recently plonked a dvd into my usb-attached Pioneer DVR-107d only to find > that the current kernels no longer saw the drive as DVD capable. In fact, > the kernel no longer saw _any_ features of the drive: sr0: scsi3-mmc drive: > 0x/0x caddy. After much bisecting and even more blind luck I narrowed the > problem down to this commit: > > commit bdb2b8cab4392ce41ddfbd6773a3da3334daf836 > Author: Alan Stern > Date: Tue Jun 24 14:03:14 2008 -0400 > > [SCSI] erase invalid data returned by device > > This patch (as1108) fixes a problem that can occur with certain USB > mass-storage devices: They return invalid data together with a residue > indicating that the data should be ignored. Rather than leave the > invalid data in a transfer buffer, where it can get misinterpreted, > the patch clears the invalid portion of the buffer. > > This solves a problem (wrong write-protect setting detected) reported > by Maciej Rutecki and Peter Teoh. > > Regards > Mike > -- > 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/