Received: by 2002:a25:b794:0:0:0:0:0 with SMTP id n20csp3890378ybh; Tue, 6 Aug 2019 03:05:56 -0700 (PDT) X-Google-Smtp-Source: APXvYqzSRmne30nl1nTtLHXGRUAAQ7Ax7kDt6ps2PIT3f7nJc+lj1tBRUSDEhz4Qm6hBwkyKBs// X-Received: by 2002:a63:c008:: with SMTP id h8mr2350118pgg.427.1565085956700; Tue, 06 Aug 2019 03:05:56 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1565085956; cv=none; d=google.com; s=arc-20160816; b=YJdK00mKS4AqkouLc42DO5VYUjb4e/+ljTXYEuyKMxyYndjprvJUHD+fg/xlyhWdC7 Dnt0cf6SdNujKxRqTwSJhQwrLI8oqp3Y2V3i9RC2vVpf/43fFOF0JysSzI8r3+Dxyup/ KmjVSBd2xV+eLVzepUy1SrhZEZMJFZ9qBMlYAXoiILCiQGQBWXtM/pBxI9P2hrD2yw0k kslZ5Fw5o38y45Fh2iYOe4jRNBkOzNBx2+EMR97cKtV/8Y7vsWrubm4QBNNkBAu/0zNd pdCh7rEZpOvDHip6ZesegYjmTMsoCih1Avf3k15IeICWPtiNH0RstWqlI951eUZh3mjo L0/Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject:dkim-signature; bh=TwOhMGhMANMXvAFZPihyePA9NbKtnOP/KgFKclRHF+k=; b=EXAR8zNxBRmiAxcsn8DPxrGcFZAzPJ44c8PZDmZecUIvmGJooQAlhsDc3PiMFZRO1x oJH++KKW519bZI8WEVFkV3b+9BEzkQ7D1Ktf3F8fRiVitAzesL7H87uAmLZ4EJ2qT3WM dt1Ay3U50tH5pgIMrpHnrdd5KdM/Oa9SQTXckgiYftaaHUZQzHirDAgu0oQLpXjEKSLL WI+7RW9bVcq0tdds2XbfZNRXfBvBQk5cUoWC6jpIjzZdnxMmOYyXdWY7qARcXGbS7+St CzlKR2Y1FZASiBYE8ob/ji4O9CryBNHPkf/kmJkxGR8zrg73D6nGAyokTnzPuowK98DK iv5A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=BK7oLng4; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p125si45798237pfp.35.2019.08.06.03.05.40; Tue, 06 Aug 2019 03:05:56 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=BK7oLng4; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732570AbfHFKDn (ORCPT + 99 others); Tue, 6 Aug 2019 06:03:43 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:53691 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732543AbfHFKDm (ORCPT ); Tue, 6 Aug 2019 06:03:42 -0400 Received: by mail-wm1-f65.google.com with SMTP id x15so77582657wmj.3 for ; Tue, 06 Aug 2019 03:03:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=TwOhMGhMANMXvAFZPihyePA9NbKtnOP/KgFKclRHF+k=; b=BK7oLng4JJpIrJecvlzh3peO1eFaLtaQYBzGrT0Z6HrqZk0GiczmRg8lC+Kagnlwkk YYCcEqIeJYGpnsLnS83L1/Z3M1C7BsV9/eDAY14XoGJ9o61YKfMEA6bzHxCloqZEbj2K P8Y+ylJ0jAQy7JiP/LFSfjH3ERxZZfl+7Lwew36294Wy8aMg6ib0NyywtP4gHSs8LsOs ItNGmaQHIcOmBwvUDry5Hdctrk6RyoN9fWEYwzaY6qHEwKc7Tu824SqN8a5VaBHCbssk JPMd+2/zJWhft4iSdD9k0ZDTZh4GtHdz+s60ShlwBCGCBXw7ra99lQ2B3YfomOQl253n JUKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=TwOhMGhMANMXvAFZPihyePA9NbKtnOP/KgFKclRHF+k=; b=LcXEVs6qguwdMRiC//4WfzHRHCUObs5oL7j2LVQDWAoBCnA8uyncdePk8DN/4iY/Yn +rcuFTjtuj6vPkOefKqdcsPHVNuqU2zBYQYdu2oknMk6q721Ex1BuomCJXuKrJUUQ8dA luslRSRxW3ntfBH3+vrqVNKalLbOjXKZD7zg6Zc5jB0xIcVZAXIVXoxidEpeS9W9SKYr 4h9NemJVu2b0heyQJbj5nTLsi8QDrxUtBcgw/YhiSqzVb2epvsKBnmCeiOmL02p1gsnw n1VllYBe0heP9LHOaC1CwY0TQTjK4Be0k5jD+24tqk8SibuZ4/qpI+y4ZJIVl1BPTlX2 NHlw== X-Gm-Message-State: APjAAAULDLwNEoXFb3we8zv0at8L6YXosQQxaFpUVlL3stVkV51gjxXi n9p24744/d+YJsc3NDMpuF6P4YAPmgI= X-Received: by 2002:a1c:343:: with SMTP id 64mr4020385wmd.116.1565085820389; Tue, 06 Aug 2019 03:03:40 -0700 (PDT) Received: from [192.168.86.34] (cpc89974-aztw32-2-0-cust43.18-1.cable.virginm.net. [86.30.250.44]) by smtp.googlemail.com with ESMTPSA id a67sm109887567wmh.40.2019.08.06.03.03.39 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 06 Aug 2019 03:03:39 -0700 (PDT) Subject: Re: [PATCH v2] nvmem: meson-mx-efuse: allow reading data smaller than word_size To: Martin Blumenstingl , linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20190727193414.11371-1-martin.blumenstingl@googlemail.com> From: Srinivas Kandagatla Message-ID: <375179fb-7cb6-0ec0-0c1a-b894c5198e15@linaro.org> Date: Tue, 6 Aug 2019 11:03:39 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <20190727193414.11371-1-martin.blumenstingl@googlemail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 27/07/2019 20:34, Martin Blumenstingl wrote: > Some Amlogic boards store the Ethernet MAC address inside the eFuse. The > Ethernet MAC address uses 6 bytes. The existing logic in > meson_mx_efuse_read() would write beyond the end of the data buffer when > trying to read data with a size that is not aligned to word_size (4 > bytes on Meson8, Meson8b and Meson8m2). > > Calculate the remaining data to copy inside meson_mx_efuse_read() so > reading 6 bytes doesn't write beyond the end of the data buffer. > > Signed-off-by: Martin Blumenstingl > --- Applied Thanks, Srini