Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755126AbbLJSMu (ORCPT ); Thu, 10 Dec 2015 13:12:50 -0500 Received: from foss.arm.com ([217.140.101.70]:56904 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752567AbbLJSMt (ORCPT ); Thu, 10 Dec 2015 13:12:49 -0500 Message-ID: <5669C09D.2080108@arm.com> Date: Thu, 10 Dec 2015 18:12:45 +0000 From: Marc Zyngier Organization: ARM Ltd User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.7.0 MIME-Version: 1.0 To: jakeo@microsoft.com, gregkh@linuxfoundation.org, kys@microsoft.com, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, tglx@linutronix.de, haiyangz@microsoft.com, bhelgaas@google.com, linux-pci@vger.kernel.org Subject: Re: [PATCH v10 5/7] PCI: irqdomain: Look up IRQ domain by fwnode_handle References: <1449769983-12948-1-git-send-email-jakeo@microsoft.com> <1449769983-12948-6-git-send-email-jakeo@microsoft.com> In-Reply-To: <1449769983-12948-6-git-send-email-jakeo@microsoft.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1515 Lines: 50 On 10/12/15 17:53, jakeo@microsoft.com wrote: > 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 750f907..c6369dd 100644 > --- a/drivers/pci/probe.c > +++ b/drivers/pci/probe.c > @@ -674,6 +674,20 @@ 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; > } > > Reviewed-by: Marc Zyngier M. -- Jazz is not dead. It just smells funny... -- 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/