From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Pisati Subject: Re: MMC: commit dba3c29 ruins mmc card data on beagle-xm revB Date: Fri, 22 Jun 2012 13:51:42 +0200 Message-ID: <4FE45C4E.8060808@gmail.com> References: <4FE0AE7B.4040502@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-bk0-f46.google.com ([209.85.214.46]:56686 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755585Ab2FVLvr (ORCPT ); Fri, 22 Jun 2012 07:51:47 -0400 In-Reply-To: Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: "T Krishnamoorthy, Balaji" Cc: Ming Lei , linux-mmc@vger.kernel.org, linux-arm-kernel , Linux Kernel Mailing List , Chris Ball , Venkatraman S On 06/20/2012 09:23 AM, T Krishnamoorthy, Balaji wrote: >> >> i just want to say that i'm affected by this too, and i can reproduce it >> 100%. >> > > Is it with SD or MMC card > Can you provide Beagle board rev info? kingston 4g class 4 sdhc c04g taiwan tested on a beagle xm rev a and rev c, both boards exhibit the same problem with this card, while with a brand new sandisk 16gb sdhc class 4 card, everything is ok. i tried reverting dba3c29 "Enable Auto CMD12", and both cards are behaving fine. >> do you want me to run that patch or you already have enough data? > > Can you enable MMC debug and apply the debug patch I provided. > The debug patch did not print any AUTOCMD errors with Ming Lei setup. http://people.canonical.com/~ppisati/mmc-testing/ test-mmc.sh: script used for testing test-mmc.log: md5sum of file copied around (as you can see after the umount the md5 changes) test-mmc.syslog: mmc-debug output (plus your patch) after the test, my sd card was so badly wounded that it wouldn't even boot. -- bye, p.