From patchwork Thu Sep 28 08:04:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avri Altman X-Patchwork-Id: 13402244 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11469CE7B0D for ; Thu, 28 Sep 2023 08:07:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231229AbjI1IHD (ORCPT ); Thu, 28 Sep 2023 04:07:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33944 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231417AbjI1IGx (ORCPT ); Thu, 28 Sep 2023 04:06:53 -0400 Received: from esa1.hgst.iphmx.com (esa1.hgst.iphmx.com [68.232.141.245]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D8EACC4 for ; Thu, 28 Sep 2023 01:06:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1695888383; x=1727424383; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OSy2jWIH1FKLfuVo2iY+TSVFyzlzcjgVPwfIJcUsmn8=; b=GaqV9vsdyoNG5cmLgoO3H8fB+SNyLbRTha81KQAlsRgyKdG0A3wenhY6 H7r15XdaVc/fh4K8/DFNop/ISndONqHvH1VwLAiS91mBpOiakzdo2L561 5FeQNF5xYzps+j96B44qtHWPcpzZfBv62MQvwi8aK6D+eeJ++BZgi6QlG dapoeKHmigkPamztzBZUsZ2gzezstgC0DkIMRB3rEC+/tOPwLvU0FfX9p 2vgBxxy0tZ4F3Z+jfSI9UjLfZgOt1VEHVRO/Fn2rZALL9ClC51FJUMNNw KZ6NJzZsVlBc9cZvqhKMN1Lj8DfxRK5JwAoyitDbJfX1G4cIvHcoJS+0K Q==; X-CSE-ConnectionGUID: WXJjhHUlRgCIpUdqHA0Awg== X-CSE-MsgGUID: t8He9CdQQh2oyLD7K4bpRw== X-IronPort-AV: E=Sophos;i="6.03,183,1694707200"; d="scan'208";a="357259067" Received: from uls-op-cesaip02.wdc.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 28 Sep 2023 16:06:23 +0800 IronPort-SDR: ddsvt3unVKtoTxV8E0YxTt7Lp+bOI5Ucm8M/CmpZKwF+nTlUL8kqTMg0m61mzFrM7IX9lHalzt tE001/1VXDaH84L+s0Ui5vkYKMitHq2qW4dnXkSUu+nEBmcbb4680kSBgwnSH7VfecvMHiO5+x 63Dhnk67TGMINlDwa7kYSRFLN7PRLnV8i6LqzsiRsSYRdNousSD755vvl7SPm+0SQOq13PWvhd NWXZAj0VQKm6H/8ksUwt8pOKMUtgnuILSSdyLW7wzqcvn5WLxBzdiAvhpizzD5M1BcJ7GZNpsd KbA= Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 28 Sep 2023 00:13:08 -0700 IronPort-SDR: RIkdldSD36W8dh2yHvIcAmoxD/PMGYO/88OsJHDM7MnC1N0R3/D4TcJptR2SffU6LkSx9sjDK3 B7qHfmxnCQq7d/wxZsoZ+qfsb6aGrAsRj8hsgl9uRCKOH0qVsPZk4FkRSv88btiJnNxr3vlrF+ MIgi3jDIC0ogaVn/rpzZE4cQ69wWMHFn1jdGpV6+hcMDXB0U4bmC3Vtvqa/evW0syVX1uo1M66 oa4avu6e0vNj08L8nJewekyqXsizRkCxyDXYgp0glk1d9YBR26oYpf5ckY+zsHJuVA6ZNLwJYi ttw= WDCIronportException: Internal Received: from avri-office.ad.shared (HELO avri-office.sdcorp.global.sandisk.com) ([10.45.31.142]) by uls-op-cesaip02.wdc.com with ESMTP; 28 Sep 2023 01:06:22 -0700 From: Avri Altman To: Ulf Hansson , linux-mmc@vger.kernel.org Cc: wanggang26 Subject: [PATCH v2 4/4] mmc-utils: lsmmc: Fix emmc capacity calculation Date: Thu, 28 Sep 2023 11:04:41 +0300 Message-Id: <20230928080441.1793898-5-avri.altman@wdc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230928080441.1793898-1-avri.altman@wdc.com> References: <20230928080441.1793898-1-avri.altman@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: wanggang26 When the device capacity is larger than 2GB, it shouldn't use c_size but instead it follows a different calculation using the SEC_COUNT field of the ext-csd[215:212] - see eMMC spec JESD84-B51 paragraph 7.3.12. This bug was already in lsmmc when it got merged into mmc-utils, hence the fixes tag. Fixes: 4af1749d2350 (mmc-utils: Merge the lsmmc tool into mmc-utils) Signed-off-by: wanggang26 --- lsmmc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lsmmc.c b/lsmmc.c index c984d9a..9596722 100644 --- a/lsmmc.c +++ b/lsmmc.c @@ -1826,6 +1826,9 @@ static void print_mmc_csd_capacity(unsigned int c_size, unsigned int c_size_mult int block_len = 1 << read_bl_len; unsigned long long memory_capacity; + if (c_size == 0xfff) + return; + printf("\tC_SIZE: 0x%03x\n", c_size); printf("\tC_SIZE_MULT: 0x%01x\n", c_size_mult);