From patchwork Fri Jan 15 21:53:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 12024219 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 41C0EC433DB for ; Fri, 15 Jan 2021 21:53:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F119423A05 for ; Fri, 15 Jan 2021 21:53:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725933AbhAOVxz (ORCPT ); Fri, 15 Jan 2021 16:53:55 -0500 Received: from mga12.intel.com ([192.55.52.136]:4422 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725918AbhAOVxz (ORCPT ); Fri, 15 Jan 2021 16:53:55 -0500 IronPort-SDR: 2H+zH7thtJkpNSIOe68B9sK7I6MlFJDcZN039CPlus2P0HeA3gYvDhu5Wks92SotGbVKY304ks dBSxI5akSFNA== X-IronPort-AV: E=McAfee;i="6000,8403,9865"; a="157791421" X-IronPort-AV: E=Sophos;i="5.79,350,1602572400"; d="scan'208";a="157791421" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jan 2021 13:53:08 -0800 IronPort-SDR: bvRLnOgoGY2YSAq9g3Ne6KkDXKrajGl5tiTFxx2PLBVkVOdC4CrhH8v1JUnn3FY32x/fOL7B7E /nmg5VFNNzlw== X-IronPort-AV: E=Sophos;i="5.79,350,1602572400"; d="scan'208";a="382812999" Received: from djiang5-desk3.ch.intel.com ([143.182.136.137]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jan 2021 13:53:08 -0800 Subject: [PATCH] dmaengine: idxd: set DMA channel to be private From: Dave Jiang To: vkoul@kernel.org Cc: Srinijia Kambham , Srinijia Kambham , dmaengine@vger.kernel.org Date: Fri, 15 Jan 2021 14:53:07 -0700 Message-ID: <161074758743.2184057.3388557138816350980.stgit@djiang5-desk3.ch.intel.com> User-Agent: StGit/0.23-29-ga622f1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org Add DMA_PRIVATE attribute flag to idxd DMA channels. The dedicated WQs are expected to be used by a single client and not shared. While doing NTB testing this mistake was discovered, which prevented ntb_transport from requesting DSA wqs as DMA channels via dma_request_channel(). Reported-by: Srinijia Kambham Signed-off-by: Dave Jiang Tested-by: Srinijia Kambham Fixes: 8f47d1a5e545 ("dmaengine: idxd: connect idxd to dmaengine subsystem") --- drivers/dma/idxd/dma.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/dma/idxd/dma.c b/drivers/dma/idxd/dma.c index 8ed2773d8285..90d19d06783a 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -165,6 +165,7 @@ int idxd_register_dma_device(struct idxd_device *idxd) INIT_LIST_HEAD(&dma->channels); dma->dev = &idxd->pdev->dev; + dma_cap_set(DMA_PRIVATE, dma->cap_mask); dma_cap_set(DMA_COMPLETION_NO_ORDER, dma->cap_mask); dma->device_release = idxd_dma_release;