Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754697AbbKBVet (ORCPT ); Mon, 2 Nov 2015 16:34:49 -0500 Received: from o1.f.az.sendgrid.net ([208.117.55.132]:44000 "EHLO o1.f.az.sendgrid.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754330AbbKBVde (ORCPT ); Mon, 2 Nov 2015 16:33:34 -0500 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: UsLXQ589HNP4HLBydmD9pgHURQozLYm9XliudupI8YuyC0V01AdKnL2CjcH/cBLm6gViF5C7NYqzXT zD5qdCJOxK40pbAZaUbImLB51rOob7Vt2ckOl2JhECOCnvlzQaA99h3aQWSt9lSzMCYXMPQhPsUArU 0uGbtcxVRqX0Vyi23NkduZB/VIJNOJJh12rf Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1302 Lines: 45 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; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/