From jordan.crouse@amd.com Mon Apr 10 20:47:33 2006 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.1 (2006-03-10) on tim.rpsys.net X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00 autolearn=ham version=3.1.1 Received: from localhost (localhost [127.0.0.1]) by tim.rpsys.net (8.13.6/8.13.6) with ESMTP id k3AJlX70000398 for ; Mon, 10 Apr 2006 20:47:33 +0100 Received: from tim.rpsys.net ([127.0.0.1]) by localhost (tim.rpsys.net [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 10182-03 for ; Mon, 10 Apr 2006 20:47:31 +0100 (BST) Received: from amdext4.amd.com (amdext4.amd.com [163.181.251.6]) by tim.rpsys.net (8.13.6/8.13.6) with ESMTP id k3AJkoMR031198 for ; Mon, 10 Apr 2006 20:46:51 +0100 Received: from SAUSGW01.amd.com (sausgw01.amd.com [163.181.250.21]) by amdext4.amd.com (8.12.11/8.12.11/AMD) with ESMTP id k3AJkg4E004205 for ; Mon, 10 Apr 2006 14:46:42 -0500 Received: from 163.181.22.101 by SAUSGW02.amd.com with ESMTP (AMD SMTP Relay (Email Firewall v6.1.0)); Mon, 10 Apr 2006 14:46:33 -0500 X-Server-Uuid: 5FC0E2DF-CD44-48CD-883A-0ED95B391E89 Received: from ldcmail.amd.com ([147.5.200.40]) by sausexbh1.amd.com with Microsoft SMTPSVC(6.0.3790.2499); Mon, 10 Apr 2006 14:46:32 -0500 Received: from cosmic.amd.com (cosmic.amd.com [147.5.201.206]) by ldcmail.amd.com (Postfix) with ESMTP id 4AB2F2028 for ; Mon, 10 Apr 2006 13:46:32 -0600 (MDT) Received: from cosmic.amd.com (localhost [127.0.0.1]) by cosmic.amd.com (8.13.4/8.13.4) with ESMTP id k3AKRiVM001176 for ; Mon, 10 Apr 2006 14:27:45 -0600 Received: (from jcrouse@localhost) by cosmic.amd.com ( 8.13.4/8.13.4/Submit) id k3AKRibV001175 for rpurdie@rpsys.net; Mon, 10 Apr 2006 14:27:44 -0600 Date: Mon, 10 Apr 2006 14:27:44 -0600 From: "Jordan Crouse" To: rpurdie@rpsys.net Subject: SD large capacity patch Message-ID: <20060410202744.GH7398@cosmic.amd.com> MIME-Version: 1.0 User-Agent: Mutt/1.5.11 X-OriginalArrivalTime: 10 Apr 2006 19:46:32.0699 (UTC) FILETIME=[77F644B0:01C65CD7] X-WSS-ID: 6824699325S615165-02-01 Content-Type: multipart/mixed; boundary=3MwIy2ne0vdjdPXF Content-Disposition: inline X-Virus-Scanned: amavisd-new at rpsys.net X-Evolution-Source: imap://richard@tim.rpsys.net/ --3MwIy2ne0vdjdPXF Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: 8bit Here you go. So far the only hardware I've tested it on is the Alchemy, but it should work for you too. -- Jordan Crouse Senior Linux Engineer AMD - Personal Connectivity Solutions Group --3MwIy2ne0vdjdPXF Content-Type: text/plain; charset=us-ascii Content-Disposition: inline; filename=sd-largecap.patch Content-Transfer-Encoding: 8bit PATCH: Force MMC/SD to 512 byte block sizes. From: Jordan Crouse Angry customers and investigation into USB attached MMC/SD readers have lead us to believe that the SD device block size should be fixed at 512 bytes regardless of the block size reported by the card. This comes into play with >2G cards. After applying this fix, filesystems written with a USB card reader can be read by the MMC subsystem and vice-versa. Signed-off-by: Jordan Crouse --- drivers/mmc/card/block.c | 6 ++++++ 1 file changed, 6 insertions(+) Index: linux-2.6.21/drivers/mmc/card/block.c =================================================================== --- linux-2.6.21.orig/drivers/mmc/card/block.c 2007-07-01 17:02:42.000000000 +0100 +++ linux-2.6.21/drivers/mmc/card/block.c 2007-07-01 17:05:08.000000000 +0100 @@ -403,6 +403,7 @@ static struct mmc_blk_data *mmc_blk_allo { struct mmc_blk_data *md; int devidx, ret; + unsigned long cap; devidx = find_first_zero_bit(dev_use, MMC_NUM_MINORS); if (devidx >= MMC_NUM_MINORS) @@ -467,6 +468,11 @@ static struct mmc_blk_data *mmc_blk_allo sprintf(md->disk->disk_name, "mmcblk%d", devidx); + if (card->csd.read_blkbits > 9) + md->block_bits = 9; + else + md->block_bits = card->csd.read_blkbits; + blk_queue_hardsect_size(md->queue.queue, 1 << md->block_bits); if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) {