From patchwork Sun Aug 11 02:45:21 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinghai Lu X-Patchwork-Id: 2842664 X-Patchwork-Delegate: rui.zhang@intel.com Return-Path: X-Original-To: patchwork-linux-acpi@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 C08B19F314 for ; Sun, 11 Aug 2013 02:57:02 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EC8C920304 for ; Sun, 11 Aug 2013 02:57:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8946F20300 for ; Sun, 11 Aug 2013 02:57:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752278Ab3HKCrC (ORCPT ); Sat, 10 Aug 2013 22:47:02 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:34518 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751915Ab3HKCqO (ORCPT ); Sat, 10 Aug 2013 22:46:14 -0400 Received: from acsinet21.oracle.com (acsinet21.oracle.com [141.146.126.237]) by aserp1040.oracle.com (Sentrion-MTA-4.3.1/Sentrion-MTA-4.3.1) with ESMTP id r7B2jhGn014464 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Sun, 11 Aug 2013 02:45:44 GMT Received: from aserz7021.oracle.com (aserz7021.oracle.com [141.146.126.230]) by acsinet21.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r7B2jgtH029249 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sun, 11 Aug 2013 02:45:43 GMT Received: from abhmt103.oracle.com (abhmt103.oracle.com [141.146.116.55]) by aserz7021.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id r7B2jfV2029246; Sun, 11 Aug 2013 02:45:42 GMT Received: from linux-siqj.site.site (/75.36.254.102) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sat, 10 Aug 2013 19:45:41 -0700 From: Yinghai Lu To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Tony Luck , Bjorn Helgaas , "Rafael J. Wysocki" Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Yinghai Lu , Joerg Roedel , Donald Dutile , Sebastian Andrzej Siewior , stable@vger.kernel.org Subject: [PATCH 10/28] iommu, irq: Allocate irq_desc for dmar_msi with local node Date: Sat, 10 Aug 2013 19:45:21 -0700 Message-Id: <1376189139-31856-12-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1376189139-31856-1-git-send-email-yinghai@kernel.org> References: <1376189139-31856-1-git-send-email-yinghai@kernel.org> X-Source-IP: acsinet21.oracle.com [141.146.126.237] Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-5.1 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, 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 iommu irq's irq_desc should be on local node ram. Fix the return value checking problem. create_irq() will return -1 when fail to allocate. create_irq_nr() will return 0 when fail to allocate. here only check !irq, so need to change it to use create_irq_nr instead. -v2: According to Sebastian, add cc to stable. Signed-off-by: Yinghai Lu Cc: Joerg Roedel Cc: Donald Dutile Acked-by: Donald Dutile Cc: Sebastian Andrzej Siewior Cc: stable@vger.kernel.org --- 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 785675a..db41e36 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -1277,7 +1277,7 @@ int dmar_set_interrupt(struct intel_iommu *iommu) if (iommu->irq) return 0; - irq = create_irq(); + irq = create_irq_nr(0, iommu->node); if (!irq) { pr_err("IOMMU: no free vectors\n"); return -EINVAL;