From 4b824de9b18b8d1013e9fc9e4b0f855ced8cac2c Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Wed, 19 Nov 2008 03:55:35 +0000 Subject: [PATCH] powerpc: Fix IRQ assignment for some PCIe devices Currently, some PCIe devices on POWER6 machines do not get interrupts assigned correctly. The problem is that OF doesn't create an "interrupt" property for them. The fix is for of_irq_map_pci to fall back to using the value in the PCI interrupt-pin register in config space, as we do when there is no OF device-tree node for the device. I have verified that this works fine with a pair of Squib-E SAS adapter on a P6-570. Acked-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/prom_parse.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c index bc1fb27368a..a11d68976dc 100644 --- a/arch/powerpc/kernel/prom_parse.c +++ b/arch/powerpc/kernel/prom_parse.c @@ -250,8 +250,11 @@ int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq) * parsing */ dn = pci_device_to_OF_node(pdev); - if (dn) - return of_irq_map_one(dn, 0, out_irq); + if (dn) { + rc = of_irq_map_one(dn, 0, out_irq); + if (!rc) + return rc; + } /* Ok, we don't, time to have fun. Let's start by building up an * interrupt spec. we assume #interrupt-cells is 1, which is standard -- 2.41.0