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, haiyangz@microsoft.com, marc.zyngier@arm.com, bhelgaas@google.com, linux-pci@vger.kernel.org Cc: Jake Oshins Subject: [PATCH RESEND 2/3] PCI: irqdomain: Look up IRQ domain by fwnode_handle Date: Tue, 2 Feb 2016 17:41:42 +0000 Message-Id: <1454434903-1680-3-git-send-email-jakeo@microsoft.com> In-Reply-To: <1454434903-1680-1-git-send-email-jakeo@microsoft.com> References: <1454434903-1680-1-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 | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index b207e74..1e34d21 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -676,6 +676,20 @@ static struct irq_domain *pci_host_bridge_msi_domain(struct pci_bus *bus) if (!d) d = pci_host_bridge_acpi_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