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=-5.2 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,NICE_REPLY_A,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 B7CF1C2D0A8 for ; Wed, 30 Sep 2020 05:11:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 493AC2074A for ; Wed, 30 Sep 2020 05:11:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="m5GCeSEp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725771AbgI3FL4 (ORCPT ); Wed, 30 Sep 2020 01:11:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725320AbgI3FLz (ORCPT ); Wed, 30 Sep 2020 01:11:55 -0400 Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C3A2C061755; Tue, 29 Sep 2020 22:11:55 -0700 (PDT) Received: by mail-lj1-x241.google.com with SMTP id y4so452612ljk.8; Tue, 29 Sep 2020 22:11:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=rLwBsch1+w3pmAWJFs5DtFDJyLpowZ0+c2NUgy8bnXs=; b=m5GCeSEprGiDpHfi1VS3q22QiyOE2gFVXY3X32Hm2ec83A0n6RZ00T7c+/qFGIMHwY x+Puym/28gNgogutmTqBX4rkB4UjmJzUVIXE15Sbrn2sqTD+URXqGHKDRpJgF61y2ppg 041DnlHDm90GsKWEBv4kYAlbaIHy581CdsGbgx2g1TTA027Ic4WwXaakvEoQsL5Qqian amomBfKWeKKRr5oj84PKUryv3ZTNWo9LnopBpeW596Vfp+7Y6KHApGZ/T9XqT4uh8D69 XUtQChvpjIThUM04sA+tJ6HLWfsa844JL2KEeq+GkjD3WtBKNQohQsfbc4aBCjOPrJYy VnCQ== 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=rLwBsch1+w3pmAWJFs5DtFDJyLpowZ0+c2NUgy8bnXs=; b=FoQRxq9lZrIFG27/8Xy1HV6EVfiishA5GcMIATOWNOBYBIvdWSE6lEyeHRifzMLasA N8wz6i8B2sCgXuHlJmjZ+lAdwOmkmSNp8P6tTz/2evlSLZ1JbQI4Uj6SX5l6CQXpUSr3 fuck6Eaj/ymBFdKflVIGmAxvdwfBnE4WMz2Pf7HK2CiYR5J71NGC7kQy40Ndivxk6VNs UW7uhAzhvo8NFKIIlyIL+Te/WMHix/YEjmyDUrKOvR6BbOmcb073exQcamS5VkytMzVn K3C+dlsMep+xAIAe0LI++QRax7G/mZJDxFOeJLVlkGwXsoMxpRrzJHn02/uGcNBRvSgy B1oQ== X-Gm-Message-State: AOAM53399LevYnguD/qBhbgPFNMnNQ0vERtn22R3eOPFINi84+q0D3Cc GOOCUY3rk2Sn9EqOECo0rpn1dU0unwM= X-Google-Smtp-Source: ABdhPJxWyMn8thmjGkZ8EmMO0wqHrJQj8NxdwNWM0AxXfLfuVFFIm63GXwGeOiyAEd98d86t10qEng== X-Received: by 2002:a05:651c:1397:: with SMTP id k23mr341636ljb.263.1601442713758; Tue, 29 Sep 2020 22:11:53 -0700 (PDT) Received: from [192.168.2.145] (109-252-170-211.dynamic.spd-mgts.ru. [109.252.170.211]) by smtp.googlemail.com with ESMTPSA id u23sm48284ljl.86.2020.09.29.22.11.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 29 Sep 2020 22:11:53 -0700 (PDT) Subject: Re: [PATCH v2 2/3] iommu/tegra-smmu: Rework .probe_device and .attach_dev To: Nicolin Chen , thierry.reding@gmail.com, joro@8bytes.org, krzk@kernel.org Cc: vdumpa@nvidia.com, jonathanh@nvidia.com, linux-tegra@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org References: <20200930003013.31289-1-nicoleotsuka@gmail.com> <20200930003013.31289-3-nicoleotsuka@gmail.com> From: Dmitry Osipenko Message-ID: <75514da5-e63a-9e51-8376-abbd12c324d1@gmail.com> Date: Wed, 30 Sep 2020 08:11:52 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200930003013.31289-3-nicoleotsuka@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org 30.09.2020 03:30, Nicolin Chen пишет: > + /* An invalid mc pointer means mc and smmu drivers are not ready */ > + if (IS_ERR_OR_NULL(mc)) tegra_get_memory_controller() doesn't return NULL. > + return ERR_PTR(-EPROBE_DEFER);