From patchwork Thu Aug 20 15:08:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 11726453 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F2590739 for ; Thu, 20 Aug 2020 15:09:23 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DB4CE20FC3 for ; Thu, 20 Aug 2020 15:09:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DB4CE20FC3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0CFA46E95B; Thu, 20 Aug 2020 15:09:23 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by gabe.freedesktop.org (Postfix) with ESMTP id E76DD6E95B for ; Thu, 20 Aug 2020 15:09:20 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 7D16D1424; Thu, 20 Aug 2020 08:09:20 -0700 (PDT) Received: from e121345-lin.cambridge.arm.com (e121345-lin.cambridge.arm.com [10.1.196.37]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id DE4803F6CF; Thu, 20 Aug 2020 08:09:16 -0700 (PDT) From: Robin Murphy To: hch@lst.de, joro@8bytes.org, linux@armlinux.org.uk Subject: [PATCH 07/18] iommu/arm-smmu: Remove arch/arm workaround Date: Thu, 20 Aug 2020 16:08:26 +0100 Message-Id: X-Mailer: git-send-email 2.28.0.dirty In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: geert+renesas@glider.be, dri-devel@lists.freedesktop.org, bjorn.andersson@linaro.org, matthias.bgg@gmail.com, thierry.reding@gmail.com, laurent.pinchart@ideasonboard.com, digetx@gmail.com, s-anna@ti.com, will@kernel.org, m.szyprowski@samsung.com, linux-samsung-soc@vger.kernel.org, magnus.damm@gmail.com, kyungmin.park@samsung.com, jonathanh@nvidia.com, agross@kernel.org, yong.wu@mediatek.com, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, vdumpa@nvidia.com, linux-mediatek@lists.infradead.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, sw0312.kim@samsung.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, iommu@lists.linux-foundation.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Now that arch/arm is wired up for default domains and iommu-dma, remove the add_device workaround. Signed-off-by: Robin Murphy Acked-by: Will Deacon --- drivers/iommu/arm/arm-smmu/arm-smmu.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu.c b/drivers/iommu/arm/arm-smmu/arm-smmu.c index 09c42af9f31e..4e52d8cb67dd 100644 --- a/drivers/iommu/arm/arm-smmu/arm-smmu.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu.c @@ -1164,17 +1164,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev) return -ENXIO; } - /* - * FIXME: The arch/arm DMA API code tries to attach devices to its own - * domains between of_xlate() and probe_device() - we have no way to cope - * with that, so until ARM gets converted to rely on groups and default - * domains, just say no (but more politely than by dereferencing NULL). - * This should be at least a WARN_ON once that's sorted. - */ cfg = dev_iommu_priv_get(dev); - if (!cfg) - return -ENODEV; - smmu = cfg->smmu; ret = arm_smmu_rpm_get(smmu);