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,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 B3F62C4727C for ; Wed, 30 Sep 2020 05:39:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6C74A20706 for ; Wed, 30 Sep 2020 05:39:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="nBLomMXf" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725809AbgI3Fj4 (ORCPT ); Wed, 30 Sep 2020 01:39:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36144 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725320AbgI3Fj4 (ORCPT ); Wed, 30 Sep 2020 01:39:56 -0400 Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33CECC061755; Tue, 29 Sep 2020 22:39:56 -0700 (PDT) Received: by mail-pl1-x641.google.com with SMTP id bb1so326650plb.2; Tue, 29 Sep 2020 22:39:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to :user-agent; bh=Sfmy7ZZk8UYvhy6RI4/Gpi21fRi4lNKb0jBd0kAjjJg=; b=nBLomMXfzt25vf2Sp3AqO31imNEOWbZcgTQPPOCYTE8aOFY3RPAHFBcs2UwqO3CJzD 47WXkMWRUsgzBxptzv0S/eO2EoljUV58BKgQ241e/Ey66Zf4bh9VUBy8TchAtu8UMcfh tmUkh6/qvB436J9VJBOolQu89lFV7v1BB3kZ0pjbiV/2NN4MRAl45WaaBygyCdNt7zxD xzafK1VUznndfBPTehWmGfPoR6WVZiZVoKz/uw9VwNQYsQybSvnavFU6gLvWbDfImHC8 D+mWmzNOFwaF9QvHktr+deKI9kFNYy9JlmrR7p2TAf7ft60cXbMEwtK0762FndRKX7zC bqFg== 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:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to:user-agent; bh=Sfmy7ZZk8UYvhy6RI4/Gpi21fRi4lNKb0jBd0kAjjJg=; b=SxsuK2zOQFZT2X7y4Ktqb3sx719jSJEPJJv8sBSrlZNfWbm/GBbso6Aw32XH4d+9ve QWImIAvps0P6cndExtNnZ7q30+j8CgUH5WQ6HDsspjcfAFuRFcpoZw5mNCbo5rSA01uP 1GRBZxi8bv5O6Ak1S6eBIDFQr6S8f94g1ZSlxXdFJfahZ5mi5roh0KhMCrVm3P3wIvVK Dyoq4cKdohgL5yZDVRsOJAn6hbkG0gyUMXGjIRYiy2Le1UOD5EpfEhEtv9Zbdy/xYztw 78Rtqcfl3isEVkSFvey5AmoP0n0Ym1UF9hjiVpQAshMYmPOF9hEdgfz2Y4Hg5nBp0EKU MM6g== X-Gm-Message-State: AOAM530fHyza36qR/HgmxmlXR5fBtJD1cylJuACkZGf4zzBgsMwi5bwt AE2IAHw07i2D1WkrCPgVGI4= X-Google-Smtp-Source: ABdhPJyyhjRdMS6ldpAFpjKqaSpdHHXAmWHoyYuuQf3hOBabEmtv2ZkvYbkAJONPEBqd4PWKJ+HmiQ== X-Received: by 2002:a17:90a:1f43:: with SMTP id y3mr1055313pjy.28.1601444395688; Tue, 29 Sep 2020 22:39:55 -0700 (PDT) Received: from Asurada-Nvidia (thunderhill.nvidia.com. [216.228.112.22]) by smtp.gmail.com with ESMTPSA id o11sm687625pgq.36.2020.09.29.22.39.55 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 29 Sep 2020 22:39:55 -0700 (PDT) Date: Tue, 29 Sep 2020 22:34:25 -0700 From: Nicolin Chen To: Dmitry Osipenko Cc: thierry.reding@gmail.com, joro@8bytes.org, krzk@kernel.org, vdumpa@nvidia.com, jonathanh@nvidia.com, linux-tegra@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 3/3] iommu/tegra-smmu: Add PCI support Message-ID: <20200930053425.GC31821@Asurada-Nvidia> References: <20200930003013.31289-1-nicoleotsuka@gmail.com> <20200930003013.31289-4-nicoleotsuka@gmail.com> <5a91f07c-bc27-7607-915c-e98a7a0c4b24@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <5a91f07c-bc27-7607-915c-e98a7a0c4b24@gmail.com> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org On Wed, Sep 30, 2020 at 08:10:35AM +0300, Dmitry Osipenko wrote: > 30.09.2020 03:30, Nicolin Chen пишет: > > void tegra_smmu_remove(struct tegra_smmu *smmu) > > { > > + bus_set_iommu(&platform_bus_type, NULL); > > Why only platform_bus? Is this really needed at all? I see qcom_iommu.c file set to NULL in remove(), Probably should have added pci_bus_type too though. Or are you sure that there's no need at all?