From patchwork Thu Aug 20 15:08:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robin Murphy X-Patchwork-Id: 11726449 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 ED5AE739 for ; Thu, 20 Aug 2020 15:09:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBF1D20FC3 for ; Thu, 20 Aug 2020 15:09:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728630AbgHTPJO (ORCPT ); Thu, 20 Aug 2020 11:09:14 -0400 Received: from foss.arm.com ([217.140.110.172]:40714 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727920AbgHTPI6 (ORCPT ); Thu, 20 Aug 2020 11:08:58 -0400 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 82CFDD6E; Thu, 20 Aug 2020 08:08:57 -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 E35423F6CF; Thu, 20 Aug 2020 08:08:53 -0700 (PDT) From: Robin Murphy To: hch@lst.de, joro@8bytes.org, linux@armlinux.org.uk Cc: will@kernel.org, inki.dae@samsung.com, sw0312.kim@samsung.com, kyungmin.park@samsung.com, m.szyprowski@samsung.com, agross@kernel.org, bjorn.andersson@linaro.org, thierry.reding@gmail.com, jonathanh@nvidia.com, vdumpa@nvidia.com, digetx@gmail.com, matthias.bgg@gmail.com, yong.wu@mediatek.com, geert+renesas@glider.be, magnus.damm@gmail.com, t-kristo@ti.com, s-anna@ti.com, laurent.pinchart@ideasonboard.com, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 01/18] ARM/dma-mapping: Drop .dma_supported for IOMMU ops Date: Thu, 20 Aug 2020 16:08:20 +0100 Message-Id: <8bcf5f908d23883af00a42c0bb88d44d25c019f5.1597931876.git.robin.murphy@arm.com> X-Mailer: git-send-email 2.28.0.dirty In-Reply-To: References: MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org When an IOMMU is present, we trust that it should be capable of remapping any physical memory, and since the device masks represent the input (virtual) addresses to the IOMMU it makes no sense to validate them against physical PFNs anyway. Signed-off-by: Robin Murphy --- arch/arm/mm/dma-mapping.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 8a8949174b1c..ffa387f343dc 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -1997,8 +1997,6 @@ static const struct dma_map_ops iommu_ops = { .map_resource = arm_iommu_map_resource, .unmap_resource = arm_iommu_unmap_resource, - - .dma_supported = arm_dma_supported, }; static const struct dma_map_ops iommu_coherent_ops = { @@ -2015,8 +2013,6 @@ static const struct dma_map_ops iommu_coherent_ops = { .map_resource = arm_iommu_map_resource, .unmap_resource = arm_iommu_unmap_resource, - - .dma_supported = arm_dma_supported, }; /**