From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB81AC433B4 for ; Wed, 14 Apr 2021 09:05:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9E5D4613C8 for ; Wed, 14 Apr 2021 09:05:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346913AbhDNJFk (ORCPT ); Wed, 14 Apr 2021 05:05:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47600 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232604AbhDNJFk (ORCPT ); Wed, 14 Apr 2021 05:05:40 -0400 Received: from mail-ej1-x634.google.com (mail-ej1-x634.google.com [IPv6:2a00:1450:4864:20::634]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B362C061574; Wed, 14 Apr 2021 02:05:19 -0700 (PDT) Received: by mail-ej1-x634.google.com with SMTP id r12so30284362ejr.5; Wed, 14 Apr 2021 02:05:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:subject:from:to:cc:date:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=PgIqpwqLBwx03sZU/M1HebUDJK3qyfZFbuDRvP4Asq8=; b=Mz4DQsZ5rnRJguvhv9ECKcSyh1tUic1WgXLUBeEEVOIC2jUB8RhS3SKap/YpsNyf0u SVqrNJmHyJB7ckrW+IGu3Z/nnz8iesO0191oW+XUXi0Tba8y0BtSOEJ8hjEGPZKSip83 EbN6QyLLNpKdwzBohMh3/AQp8Cyxv5yCwSeDO/o2f4nHNWWtPtIJYBNHJvfV/PGsf0N4 0645Jm3cf9XudaCoOZsN6bTEdV3CmkMF0sbc4WFzMMXwnReHPaIMp8Wi+mFeLTqYPNQ5 Ut8FRh4T4T9rwX+qn0ou54kcIR/jdQuwHEKXYQskYB5aDbHFfLsPf53ixNAGg0yArg46 SM1g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=PgIqpwqLBwx03sZU/M1HebUDJK3qyfZFbuDRvP4Asq8=; b=lagTfSKp5dgU74gMU0eeCa0mveoTGOnjCG8W37YTqc9K32AC4GioM0a7NUEjPM0KtZ iTl/OUvmggcrkAowrdbzMkcxAU4csd1/nWxznjtJLbHLa3iM9LMcOWaT5FRv6+JfuLFm rtlzVnJ/HyUMGufcWbTk6BC2gmt7E7RjTxKct2f8Q5kzgomJQsfk9SYhR+YQXqWww+uy KP4w8zAuyWZDdG+RAH9VoUiRDPEblZJytgPgUFbFlN+td1zDlFQ6ORwGEq1jBywm3vfk iTbVDZRRy3uJKiAHuAz+aPi6WVHI2ZqlCggiqmQvJP1yO7j43TJdThiUho2e7UMb/f6C 1gPw== X-Gm-Message-State: AOAM530rkxz673gtCUl248+ENnoLB3ag11tXh7C+5l2KgcF0bgG/nkps R1U0FiV9RV82r2yvcBpVSeI= X-Google-Smtp-Source: ABdhPJy8Gz6g4X+DKOTBByDRkyIdRUE6S00x9p+w1Fn2myDmt8CETDqlSPLrSx4ABk1BLGhbOmObuw== X-Received: by 2002:a17:906:3c45:: with SMTP id i5mr10618233ejg.368.1618391117850; Wed, 14 Apr 2021 02:05:17 -0700 (PDT) Received: from ubuntu-laptop (ip5f5bec5d.dynamic.kabel-deutschland.de. [95.91.236.93]) by smtp.googlemail.com with ESMTPSA id v5sm11698655edx.87.2021.04.14.02.05.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Apr 2021 02:05:17 -0700 (PDT) Message-ID: <10a2094dc66b001658c459471be146b8395cf658.camel@gmail.com> Subject: Re: [PATCH] mmc: add quirk to disable eMMC cache for Micron eMMC v5.0 cards From: Bean Huo To: Scott Branden , BCM Kernel Feedback , Ulf Hansson , linux-mmc@vger.kernel.org, Bean Huo Cc: linux-kernel@vger.kernel.org, Vladimir Olovyannikov Date: Wed, 14 Apr 2021 11:05:16 +0200 In-Reply-To: <20210408175951.22450-1-scott.branden@broadcom.com> References: <20210408175951.22450-1-scott.branden@broadcom.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.4-0ubuntu1 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org On Thu, 2021-04-08 at 10:59 -0700, Scott Branden wrote: > From: Vladimir Olovyannikov > > > > In certain rare combination of operations, Micron eMMC v5.0 cards > > may experience data errors if internal cache is enabled. > > This may lead to eMMC related data errors. > > Introduce a quirk to disable cache on these eMMC cards. Hi, Scott Give me some time, let check and confirm this interanlly. thanks, Bean