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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,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 EFA89C433DB for ; Mon, 1 Mar 2021 18:18:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1AAF64E38 for ; Mon, 1 Mar 2021 18:18:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239369AbhCASR2 (ORCPT ); Mon, 1 Mar 2021 13:17:28 -0500 Received: from mail.kernel.org ([198.145.29.99]:58728 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239126AbhCASJW (ORCPT ); Mon, 1 Mar 2021 13:09:22 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 862A764F5F; Mon, 1 Mar 2021 17:49:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614620982; bh=f6XiO+rjKURiODyXIrwbLuCa/meTOdqUQrT5FFv+Hps=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u6bhrA5roEKeOFZdP938grjFKtexbb8oFtr//ZYFsDF+ekbAXlZuQM4vzv/FfWhxC WxuS/t5vErr8kjr4pgoOPSZwD+in6OX9stHTLYtxMIqSp5PUsjFN6/3yc3aWa7KkLQ AfXDcXpaxM/55xoOGIueD4as50wnRk9XJUMBtAls= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Srinijia Kambham , Dave Jiang , Vinod Koul , Sasha Levin Subject: [PATCH 5.11 350/775] dmaengine: idxd: set DMA channel to be private Date: Mon, 1 Mar 2021 17:08:38 +0100 Message-Id: <20210301161218.918694337@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161201.679371205@linuxfoundation.org> References: <20210301161201.679371205@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dave Jiang [ Upstream commit c06e424be5f5184468c5f761c0d2cf1ed0a4e0fc ] 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") Link: https://lore.kernel.org/r/161074758743.2184057.3388557138816350980.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- 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 71fd6e4c42cd7..a15e50126434e 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; -- 2.27.0