From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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, jiang.liu@linux.intel.com, bhelgaas@google.com, linux-pci@vger.kernel.org Cc: Jake Oshins Subject: [PATCH v4 5/7] PCI: irqdomain: Look up IRQ domain by fwnode_handle Date: Thu, 29 Oct 2015 23:46:14 +0000 Message-Id: <1446162376-43419-6-git-send-email-jakeo@microsoft.com> In-Reply-To: <1446162376-43419-1-git-send-email-jakeo@microsoft.com> References: <1446162376-43419-1-git-send-email-jakeo@microsoft.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: 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 | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index f441d1b..3d5d7d6 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -671,6 +671,19 @@ 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) { + if (pci_fwnode(bus)) { + d = irq_find_matching_fwnode(pci_fwnode(bus), + DOMAIN_BUS_PCI_MSI); + } + } +#endif + return d; } -- 1.9.1