From patchwork Fri Dec 6 03:21:10 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Liu X-Patchwork-Id: 3292441 Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 72D009F386 for ; Fri, 6 Dec 2013 03:21:15 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A83CE203E5 for ; Fri, 6 Dec 2013 03:21:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B0089200D7 for ; Fri, 6 Dec 2013 03:21:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754876Ab3LFDU5 (ORCPT ); Thu, 5 Dec 2013 22:20:57 -0500 Received: from mga03.intel.com ([143.182.124.21]:56623 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751749Ab3LFDUx (ORCPT ); Thu, 5 Dec 2013 22:20:53 -0500 Received: from azsmga002.ch.intel.com ([10.2.17.35]) by azsmga101.ch.intel.com with ESMTP; 05 Dec 2013 19:20:53 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.93,838,1378882800"; d="scan'208";a="325986909" Received: from gerry-dev.bj.intel.com ([10.238.158.74]) by AZSMGA002.ch.intel.com with ESMTP; 05 Dec 2013 19:20:49 -0800 From: Jiang Liu To: Joerg Roedel , David Woodhouse , Dan Williams , Vinod Koul , Ashok Raj , Yijing Wang , Jiri Kosina , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Cc: Jiang Liu , Tony Luck , Yinghai Lu , linux-pci@vger.kernel.org, dmaengine@vger.kernel.org Subject: [Patch Part1 V2 07/20] iommu/vt-d, trivial: check suitable flag in function detect_intel_iommu() Date: Fri, 6 Dec 2013 11:21:10 +0800 Message-Id: <1386300083-6882-8-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1386300083-6882-1-git-send-email-jiang.liu@linux.intel.com> References: <1386300083-6882-1-git-send-email-jiang.liu@linux.intel.com> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Flag irq_remapping_enabled is only set by intel_enable_irq_remapping(), which is called after detect_intel_iommu(). So we should check flag disable_irq_remap instead of irq_remapping_enabled in function detect_intel_iommu(). Reviewed-by: Yijing Wang Signed-off-by: Jiang Liu --- drivers/iommu/dmar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index c17dbf7..70612a9 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -560,7 +560,7 @@ int __init detect_intel_iommu(void) dmar = (struct acpi_table_dmar *) dmar_tbl; - if (ret && irq_remapping_enabled && cpu_has_x2apic && + if (ret && !disable_irq_remap && cpu_has_x2apic && dmar->flags & 0x1) pr_info("Queued invalidation will be enabled to support x2apic and Intr-remapping.\n");