From patchwork Mon Nov 2 21:33:14 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jake Oshins X-Patchwork-Id: 539133 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id C346D1402D6 for ; Tue, 3 Nov 2015 08:36:06 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=sendgrid.me header.i=@sendgrid.me header.b=IWZmFpjq; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754361AbbKBVem (ORCPT ); Mon, 2 Nov 2015 16:34:42 -0500 Received: from o1.f.az.sendgrid.net ([208.117.55.132]:1195 "EHLO o1.f.az.sendgrid.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754333AbbKBVde (ORCPT ); Mon, 2 Nov 2015 16:33:34 -0500 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sendgrid.me; h=from:to:cc:subject:in-reply-to:references; s=smtpapi; bh=wyz4vCrVWFmvc5vMNiTqobfYqU4=; b=IWZmFpjqMnGJeANXMAxZrLdvhyAcC PHWkgoUPO2hUtOusOmD0qmMUWDI6WJdAW4vrzJMhZgnRmVy5m/snQYByPyUmz/lg iciaogrHJNoZFgnpDrgq3bdNpP5afpfLOkukVSS5/t8utEqzYIHEqES1YL3j5RjT IFDGk/F/E+0v8c= Received: by filter-328.sjc1.sendgrid.net with SMTP id filter-328.5093.5637D6AC39 2015-11-02 21:33:32.345655117 +0000 UTC Received: from jakeoshinsu2.jakeoshinsu2.d1.internal.cloudapp.net (unknown [104.210.40.47]) by ismtpd0014p1las1.sendgrid.net (SG) with ESMTP id yx4simy7QuGmR-_vcgsEOA Mon, 02 Nov 2015 21:33:32.160 +0000 (UTC) From: jakeo@microsoft.com To: gregkh@linuxfoundation.org, kys@microsoft.com, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, tglx@redhat.com, haiyangz@microsoft.com, marc.zyngier@arm.com, bhelgaas@google.com, linux-pci@vger.kernel.org Cc: Jake Oshins Subject: [PATCH v6 5/7] PCI: irqdomain: Look up IRQ domain by fwnode_handle Date: Mon, 2 Nov 2015 21:33:14 +0000 Message-Id: <1446499996-1350-6-git-send-email-jakeo@microsoft.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1446499996-1350-1-git-send-email-jakeo@microsoft.com> References: <1446499996-1350-1-git-send-email-jakeo@microsoft.com> X-SG-EID: lfnueJVzSjg1mfuVqqukVH7tZvRy9mfCIcBnfbfzaMMtrkAo39+bcmMHgmvP5aXjZCC8Wxhcor4+sU nUJtaQ/bNgQmhVLsHHvfXbjdV4on42milIEFXjrOrsyy0Fodal9hjpaw8q6JTh2VkmT+tuOTrxx5L9 b4fW14hLC7JpRys= Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Jake Oshins This patch adds a second way of finding an IRQ domain associated with a root PCI bus. After looking to see if one can be found through the OF tree, it attempts to look up the IRQ domain through an fwnode_handle stored in the pci_sysdata struct. Signed-off-by: Jake Oshins --- drivers/pci/probe.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index f441d1b..1bdaa37 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -671,6 +671,20 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) */ d = pci_host_bridge_of_msi_domain(bus); +#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN + /* + * If no IRQ domain was found via the OF tree, try looking it up + * directly through the fwnode_handle. + */ + if (!d) { + struct fwnode_handle *fwnode = pci_root_bus_fwnode(bus); + + if (fwnode) + d = irq_find_matching_fwnode(fwnode, + DOMAIN_BUS_PCI_MSI); + } +#endif + return d; }