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=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 CA45FC35E01 for ; Tue, 25 Feb 2020 17:11:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8D9DA20CC7 for ; Tue, 25 Feb 2020 17:11:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="H8HqWvZ0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730788AbgBYRL4 (ORCPT ); Tue, 25 Feb 2020 12:11:56 -0500 Received: from mail-pg1-f182.google.com ([209.85.215.182]:43073 "EHLO mail-pg1-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730738AbgBYRL4 (ORCPT ); Tue, 25 Feb 2020 12:11:56 -0500 Received: by mail-pg1-f182.google.com with SMTP id u12so7168545pgb.10 for ; Tue, 25 Feb 2020 09:11:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=/JIqNTD58+4uui0yT0NCtGSYIEj70iWMAMmdLmiPtDk=; b=H8HqWvZ0TgFOeZEuPhrXKzEsqI4myYULCVXGDQXrM3h5ynd53zDLT50Uogzfoak1Cl k1cc1awCmqp6CXqhIRJTrybXIKG5C6mkN/uG94+iQKJ/csgQunwNa6Sf2nFXrR5T7ldQ XeIPbxDjzZpd9BTE7gRpYATrk/59bn+fsdHtukWntp5/3HnKyBNZwrmZLYEO6+yMjmD0 bJ9qT7s88xykEyW3r9HZaBkgmZ+PpkrLTohG7OIsBKkDNzWiPfTtmVrk7GNho/zNZnJD Dfh4PcIiAf3zMFiguV6orc20clJ+HPTydYH7cMZVgMpyJp+uZlrIsc4vAe1UQqayqqnM HWyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=/JIqNTD58+4uui0yT0NCtGSYIEj70iWMAMmdLmiPtDk=; b=PF8yWBRUxsG7bW+r4mjasVo1MgPvq7d9Zqr2ZZ4zqa15X03zM1RKgd8bqF0atAz2Tl 53+fcT5XHIm1yXajQm4UbJBTyqVNi5EoSk/O6SoJ4vAiWO8RNvF5rPdTonbn/X5UY/Aw 7UQhlVIPoAdOB9r2QdZWfXIIdkJrAYlzb2yZNTQQjW/8c8wHDAQVZIX5Ewsk7KGhULC0 m1gK8lJDG9oTSTHDHxX/G2UxUBmF/NTO5cm+rl1Qm0LawyZrPt9IkBohnRcktDpywGeR 0tUSGxpm5mNffIX/kIWUKLKc5VTaU23Fko30dB/jVlNCLCdrSzYRfvL/Gyrjo7ZmyGnH KhJQ== X-Gm-Message-State: APjAAAXoY/cjabec/jsejBzsXMmDHi+YGmdhTdUxDARdMwUdJAZ/TBpe GA9hkBYj+xmd9jYKyt+mtgDKxhDYqks= X-Google-Smtp-Source: APXvYqzvFV9qNSHVChzmBhRIgvB9Rya6Hvi0yeT8ybWwdLe3wI1fLxT+9BucXOKwJe3La3l0oKEIVA== X-Received: by 2002:a63:5a11:: with SMTP id o17mr59696872pgb.60.1582650715104; Tue, 25 Feb 2020 09:11:55 -0800 (PST) Received: from SARKAR ([49.207.57.206]) by smtp.gmail.com with ESMTPSA id j125sm17871572pfg.160.2020.02.25.09.11.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Feb 2020 09:11:54 -0800 (PST) Date: Tue, 25 Feb 2020 22:41:50 +0530 From: Rohit Sarkar To: linux-iio@vger.kernel.org Cc: rohitsarkar5398@gmail.com Subject: query about locking in IIO Message-ID: <20200225171150.GD24663@SARKAR> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Hi, Could someone explain why using indio_dev->mlock directly is a bad idea? Further examples of cases where it cannot be replaced will be helpful Thanks, Rohit