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=-2.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 7EB0DC6778F for ; Thu, 26 Jul 2018 23:22:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 372F420862 for ; Thu, 26 Jul 2018 23:22:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BZJevzBw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 372F420862 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732108AbeG0Alh (ORCPT ); Thu, 26 Jul 2018 20:41:37 -0400 Received: from mail-lf1-f65.google.com ([209.85.167.65]:37326 "EHLO mail-lf1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731405AbeG0Alh (ORCPT ); Thu, 26 Jul 2018 20:41:37 -0400 Received: by mail-lf1-f65.google.com with SMTP id j8-v6so2327266lfb.4; Thu, 26 Jul 2018 16:22:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=jpJjsYXIvl23bc0ZxhI6uH2ME068VxWOkU6fnQDiSwM=; b=BZJevzBwqvxM8P5rK8hcJmOkDuRLFR9lK9YXf+rnN9kFKbUvZKHEM2uduxVPtBQP9S F2h0lTNvdGbjHHR/o8EDPVj/rGMrYCMPK1NH2cdh3BTzzXcBaIEZei4jN/uQyXYqWFHl r/9BbuWumRQJchf0ZhM9DQ5oCKqyFYGSEEsFkQvoFSkrFazVPxfLHIHd38J4Qx86gTXY AmDLTrdFu8Ztwppcv+8aPxHtPt9tCwgWkdGBRsA79OU4JIK+/HujT5CjRrrmT++Rutzw 7oZDHKtA0vD9PBxvMwd4D4vVM4P2PcVBKEt69yFsRo8+/mZkUgyHcRbVsDbZwbxXIn6I JVWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=jpJjsYXIvl23bc0ZxhI6uH2ME068VxWOkU6fnQDiSwM=; b=W46wov2CrgpdHHowCsxl1ef02HjIJZ4ohx/jeAmGU7uuPmcWDppUIp3lZXRYztfBLN RCa1wGLym+QjRVaucNnB0GsskDSKPUMJ3RsyNzCndLS5pPaGZC471w6mlWR2lM7ZwUpE Cweghs4FHD38ay6u5AMYHajYXPAVK3uF1D3Q1UkqCCrDvZ1UzSN8wZrmbnT0/66B0LkE JhdNHbWxM6HVn+qt+5hiotxccEHQVcDW+hu1ncCWnwo1Slbrz2mtRnXq4NJAdjwnQLJ0 5hXDAxxdik3xul+AFx0537Y01oS2W7Rlv1tetmGFW7AaHLcs5IwyKh9PdGKgWE8ouk46 mHsg== X-Gm-Message-State: AOUpUlFMJooPnqT6+v+SURgEEftaEM6bCanNfddBE82EqjxYg22mMos5 NHnDxymbpYr7WVcUC8Lcj0k= X-Google-Smtp-Source: AAOMgpcsBbd+MaQyBLzVEe83DBbkinhMexhJe9u+Bx9P7RrJyyzwBvqtqnGJ2nS4uArkAk5ITFdW+Q== X-Received: by 2002:a19:a5c5:: with SMTP id o188-v6mr2651924lfe.149.1532647354626; Thu, 26 Jul 2018 16:22:34 -0700 (PDT) Received: from localhost.localdomain (109-252-90-13.nat.spd-mgts.ru. [109.252.90.13]) by smtp.gmail.com with ESMTPSA id q15-v6sm411541ljg.62.2018.07.26.16.22.33 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 26 Jul 2018 16:22:34 -0700 (PDT) From: Dmitry Osipenko To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Thierry Reding , Jonathan Hunter , Mikko Perttunen , Rob Herring , Frank Rowand , Ben Skeggs , Russell King , Catalin Marinas , Will Deacon , Joerg Roedel , Nicolas Chauvet Cc: devicetree@vger.kernel.org, nouveau@lists.freedesktop.org, iommu@lists.linux-foundation.org, dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v1 4/6] gpu: host1x: Avoid implicit DMA backing with IOMMU Date: Fri, 27 Jul 2018 02:16:22 +0300 Message-Id: <20180726231624.21084-5-digetx@gmail.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180726231624.21084-1-digetx@gmail.com> References: <20180726231624.21084-1-digetx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Host1x driver manages IOMMU by itself, backing DMA with IOMMU by the drivers core breaks the Host1x driver. Signed-off-by: Dmitry Osipenko --- drivers/gpu/host1x/dev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index afabd33a48d9..0966415d4ccd 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -361,6 +361,7 @@ static int host1x_remove(struct platform_device *pdev) static struct platform_driver tegra_host1x_driver = { .driver = { .name = "tegra-host1x", + .no_implicit_iommu = true, .of_match_table = host1x_of_match, }, .probe = host1x_probe, -- 2.18.0