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[54.225.227.206]) by mx.google.com with ESMTPS id r2si11016173wjy.70.2013.06.19.22.50.13 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 19 Jun 2013 22:50:14 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linaro-mm-sig-bounces@lists.linaro.org designates 54.225.227.206 as permitted sender) client-ip=54.225.227.206; Received: from localhost ([127.0.0.1] helo=ip-10-141-164-156.ec2.internal) by ip-10-141-164-156.ec2.internal with esmtp (Exim 4.76) (envelope-from ) id 1UpXkv-0002Aq-Qx; Thu, 20 Jun 2013 05:50:01 +0000 Received: from hqemgate04.nvidia.com ([216.228.121.35]) by ip-10-141-164-156.ec2.internal with esmtp (Exim 4.76) (envelope-from ) id 1UpXku-0002AU-DR for linaro-mm-sig@lists.linaro.org; Thu, 20 Jun 2013 05:50:00 +0000 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate04.nvidia.com id ; Wed, 19 Jun 2013 22:50:11 -0700 Received: from hqemhub03.nvidia.com ([172.20.12.94]) by hqnvupgp07.nvidia.com (PGP Universal service); Wed, 19 Jun 2013 22:48:18 -0700 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Wed, 19 Jun 2013 22:48:18 -0700 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQEMHUB03.nvidia.com (172.20.150.15) with Microsoft SMTP Server id 8.3.298.1; Wed, 19 Jun 2013 22:49:56 -0700 Received: from thelma.nvidia.com (Not Verified[172.16.212.77]) by hqnvemgw01.nvidia.com with MailMarshal (v7,1,2,5326) id ; Wed, 19 Jun 2013 22:49:55 -0700 Received: from oreo.Nvidia.com (dhcp-10-21-26-134.nvidia.com [10.21.26.134]) by thelma.nvidia.com (8.13.8+Sun/8.8.8) with ESMTP id r5K5nodb013397; Wed, 19 Jun 2013 22:49:54 -0700 (PDT) From: Hiroshi Doyu To: , Date: Thu, 20 Jun 2013 08:49:42 +0300 Message-ID: <1371707384-30037-2-git-send-email-hdoyu@nvidia.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1371707384-30037-1-git-send-email-hdoyu@nvidia.com> References: <1371707384-30037-1-git-send-email-hdoyu@nvidia.com> MIME-Version: 1.0 Cc: linux-tegra@vger.kernel.org, linaro-mm-sig@lists.linaro.org, linux-arm-kernel@lists.infradead.org Subject: [Linaro-mm-sig] [RFC 1/3] common: DMA-mapping: add DMA_ATTR_READ_ONLY attribute X-BeenThere: linaro-mm-sig@lists.linaro.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: , List-Help: , List-Subscribe: , Errors-To: linaro-mm-sig-bounces@lists.linaro.org Sender: linaro-mm-sig-bounces@lists.linaro.org X-Gm-Message-State: ALoCoQnRfAxM/PMx9fV2vLEG6B4Gzpf3ZXhDMnwIbLYdW1wXON3RNEjoiu2P40neMUYWcSrhec+i X-Original-Sender: hdoyu@nvidia.com X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 2607:f8b0:400c:c01::233 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 This patch adds DMA_ATTR_READ_ONLY attribute to the DMA-mapping subsystem. This sets mapping attribute read-only. Signed-off-by: Hiroshi Doyu --- include/linux/dma-attrs.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/dma-attrs.h b/include/linux/dma-attrs.h index f272809..5d7371c 100644 --- a/include/linux/dma-attrs.h +++ b/include/linux/dma-attrs.h @@ -18,6 +18,7 @@ enum dma_attr { DMA_ATTR_NO_KERNEL_MAPPING, DMA_ATTR_SKIP_CPU_SYNC, DMA_ATTR_SKIP_FREE_IOVA, + DMA_ATTR_READ_ONLY, DMA_ATTR_MAX, };