From: Adhemerval Zanella Date: Wed, 19 Nov 2008 03:55:35 +0000 (+0000) Subject: powerpc: Fix IRQ assignment for some PCIe devices X-Git-Tag: v2.6.28-rc7~37^2~5 X-Git-Url: http://pilppa.org/gitweb/?a=commitdiff_plain;h=4b824de9b18b8d1013e9fc9e4b0f855ced8cac2c;p=linux-2.6-omap-h63xx.git 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 --- 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