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 8F680C433E0 for ; Mon, 1 Mar 2021 18:42:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5EA556146D for ; Mon, 1 Mar 2021 18:42:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232849AbhCASmK (ORCPT ); Mon, 1 Mar 2021 13:42:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:47664 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240103AbhCASgI (ORCPT ); Mon, 1 Mar 2021 13:36:08 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7AE43614A7; Mon, 1 Mar 2021 17:18:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614619086; bh=6jIQRV+WkNsAghoEihlNIcK00XqPFCaCirdF3CdE7QE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wfY0r8eQNI7y9Ve8uibzlgj+WPZMcJUM8VI5bNa0yyBNaXzoP6ewmcAgPXCTGzw7s L2jADYm7aRO22gPOFu5yRLHMO0jR3zVU4wBfqi2KqhvHdXU0+7oIFuiFLMMgK21LY0 4dy7jpa9JThHAphVFtu8KdlclTvP5swFuvtg1/rU= 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 5.10 296/663] dmaengine: idxd: set DMA channel to be private Date: Mon, 1 Mar 2021 17:09:04 +0100 Message-Id: <20210301161156.478538634@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161141.760350206@linuxfoundation.org> References: <20210301161141.760350206@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 8b14ba0bae1cd..ec177a535d6dd 100644 --- a/drivers/dma/idxd/dma.c +++ b/drivers/dma/idxd/dma.c @@ -174,6 +174,7 @@ 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