From patchwork Thu Sep 11 14:03:33 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Liu X-Patchwork-Id: 4887531 Return-Path: X-Original-To: patchwork-linux-arm@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 510A79F32F for ; Thu, 11 Sep 2014 14:05:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BA77C2025A for ; Thu, 11 Sep 2014 14:05:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 03A362026D for ; Thu, 11 Sep 2014 14:05:42 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XS4yH-0001YS-3m; Thu, 11 Sep 2014 14:03:37 +0000 Received: from mga01.intel.com ([192.55.52.88]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XS4xm-0000pG-Ew for linux-arm-kernel@lists.infradead.org; Thu, 11 Sep 2014 14:03:06 +0000 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga101.fm.intel.com with ESMTP; 11 Sep 2014 07:02:05 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,862,1389772800"; d="scan'208";a="384738816" Received: from gerry-dev.bj.intel.com ([10.238.158.74]) by FMSMGA003.fm.intel.com with ESMTP; 11 Sep 2014 06:56:31 -0700 From: Jiang Liu To: Benjamin Herrenschmidt , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , "Rafael J. Wysocki" , Bjorn Helgaas , Randy Dunlap , Yinghai Lu , Borislav Petkov , Grant Likely , Marc Zyngier Subject: [RFC Part2 v1 06/21] x86, MSI: Use new irqdomain interfaces to allocate/free IRQ Date: Thu, 11 Sep 2014 22:03:33 +0800 Message-Id: <1410444228-3134-7-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1410444228-3134-1-git-send-email-jiang.liu@linux.intel.com> References: <1410444228-3134-1-git-send-email-jiang.liu@linux.intel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140911_070306_550175_FBE29D96 X-CRM114-Status: GOOD ( 12.65 ) X-Spam-Score: -7.5 (-------) Cc: Tony Luck , Konrad Rzeszutek Wilk , Greg Kroah-Hartman , Joerg Roedel , x86@kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, Andrew Morton , Jiang Liu , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, 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 Use new irqdomain interfaces to allocate/free IRQ for MSI, so we could kill GENERIC_IRQ_LEGACY_ALLOC_HWIRQ later. Signed-off-by: Jiang Liu --- arch/x86/kernel/apic/msi.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c index fb45663395ca..2439d383c10c 100644 --- a/arch/x86/kernel/apic/msi.c +++ b/arch/x86/kernel/apic/msi.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -145,23 +146,20 @@ int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) { struct msi_desc *msidesc; - unsigned int irq; - int node, ret; + int irq, ret; /* Multiple MSI vectors only supported with interrupt remapping */ if (type == PCI_CAP_ID_MSI && nvec > 1) return 1; - node = dev_to_node(&dev->dev); - list_for_each_entry(msidesc, &dev->msi_list, list) { - irq = irq_alloc_hwirq(node); - if (!irq) + irq = irq_domain_alloc_irqs(NULL, -1, 1, NUMA_NO_NODE, NULL); + if (irq <= 0) return -ENOSPC; ret = setup_msi_irq(dev, msidesc, irq, 0); if (ret < 0) { - irq_free_hwirq(irq); + irq_domain_free_irqs(irq, 1); return ret; } @@ -171,7 +169,7 @@ int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) void native_teardown_msi_irq(unsigned int irq) { - irq_free_hwirq(irq); + irq_domain_free_irqs(irq, 1); } #ifdef CONFIG_DMAR_TABLE