Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751059AbXBOFsL (ORCPT ); Thu, 15 Feb 2007 00:48:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751360AbXBOFsL (ORCPT ); Thu, 15 Feb 2007 00:48:11 -0500 Received: from 85.8.24.16.se.wasadata.net ([85.8.24.16]:50314 "EHLO smtp.drzeus.cx" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751059AbXBOFsK (ORCPT ); Thu, 15 Feb 2007 00:48:10 -0500 Message-ID: <45D3F41C.3020600@drzeus.cx> Date: Thu, 15 Feb 2007 06:48:12 +0100 From: Pierre Ossman User-Agent: Thunderbird 1.5.0.9 (X11/20070131) MIME-Version: 1.0 To: Eugene Ilkov CC: linux-kernel@vger.kernel.org Subject: Re: 2.6.20 mmc: problem with highspeed SD card References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1183 Lines: 31 Eugene Ilkov wrote: > I have I/O errors with Transcend SD highspeed card 2GB/150x when it's > mounted in r/w mode (cardreader on sharp sl-c1000) > It works well if I reverse mmcv4 patch commited to 2.6.19-git2 > (http://lkml.org/lkml/2006/10/4/27) That patch is not the same as you are referencing in the rest of your mail. > I'm not experienced in mmc, but I figured out that problem is > somewhere in mmc_read_switch_caps() and when i change cmd.arg value > from 0x80FFFFF1 to 0x00FFFFF1 it works fine too > What argument should have SD_SWITCH opcode? > The argument is correct, so I'm guessing that your controller might be a bit flaky and not handle the new timing. Can you enable MMC_DEBUG and send over the dmesg? Rgds -- -- Pierre Ossman Linux kernel, MMC maintainer http://www.kernel.org PulseAudio, core developer http://pulseaudio.org rdesktop, core developer http://www.rdesktop.org - 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/