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authorAdhemerval Zanella <azanella@linux.vnet.ibm.com>2008-11-19 03:55:35 +0000
committerPaul Mackerras <paulus@samba.org>2008-12-01 09:40:18 +1100
commit4b824de9b18b8d1013e9fc9e4b0f855ced8cac2c (patch)
tree8f09d7d8d9dd534e2987146fe39ec49537bf1a39 /arch/powerpc
parent3f9b5d4dda6d85aab33fef32e8351ddc34c81fb4 (diff)
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 <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/prom_parse.c7
1 files 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