Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030261AbWJXKUU (ORCPT ); Tue, 24 Oct 2006 06:20:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030264AbWJXKUU (ORCPT ); Tue, 24 Oct 2006 06:20:20 -0400 Received: from embla.aitel.hist.no ([158.38.50.22]:37336 "HELO embla.aitel.hist.no") by vger.kernel.org with SMTP id S1030270AbWJXKUS (ORCPT ); Tue, 24 Oct 2006 06:20:18 -0400 Message-ID: <453DE80E.8090607@aitel.hist.no> Date: Tue, 24 Oct 2006 12:16:46 +0200 From: Helge Hafting User-Agent: Thunderbird 1.5.0.7 (X11/20060927) MIME-Version: 1.0 To: "Christopher \"Monty\" Montgomery" CC: Alan Stern , Paolo Ornati , Kernel development list , USB development list Subject: Re: [linux-usb-devel] 2.6.19-rc1-mm1 - locks when using "dd bs=1M" from card reader References: <4538B689.2020909@aitel.hist.no> <806dafc20610231336s58d64ad8s3bf47b922601ca38@mail.gmail.com> In-Reply-To: <806dafc20610231336s58d64ad8s3bf47b922601ca38@mail.gmail.com> Content-Type: multipart/mixed; boundary="------------030708040400090404080301" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6449 Lines: 110 This is a multi-part message in MIME format. --------------030708040400090404080301 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Christopher "Monty" Montgomery wrote: > On 10/20/06, Alan Stern wrote: >> At this point it's beyond me. Monty will have to take it from here. > > I will look more closely at what might have changed there. Despite > the code refactoring (and a hand-resolved patch collision at that > point) the async disable handling *should* have been functionally > unchanged from 2.6.18. I will revisit that closely. > > Has it actually been demonstrated that this does not crash 2.6.18 > (pre-my-patches) kernels? I just tested this. 2.6.18 does not crash. I still get tons of errors, and no data. Copying using 1MB chunks or 4kB chunks don't matter, it doesn't work. So card, reader or driver must be faulty. The card works in a windows machine though. 2.6.19-rc1 gets data with 4kB chunks, and BUGs with 1M chunks. > If it crashes earlier, that doesn't mean > I'm uninterested in fixing it, I just want to know. I don't think > that had been explicitly answered earlier in the thread. 2.6.18 wasn't tried before, the reason being I did not have this card reader when 2.6.18 was current. dmesg output for 2.6.18 (after the dd attempts) is attached. I have edited out stuff that isn't usb or scsi. 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