diff --git a/drivers/ata/pata_of_platform.c b/drivers/ata/pata_of_platform.c
index 408da30..1f18ad9 100644
--- a/drivers/ata/pata_of_platform.c
+++ b/drivers/ata/pata_of_platform.c
@@ -52,7 +52,7 @@ static int __devinit pata_of_platform_probe(struct of_device *ofdev,

         ret = of_irq_to_resource(dn, 0, &irq_res);
         if (ret == NO_IRQ)
-               irq_res.start = irq_res.end = -1;
+               irq_res.start = irq_res.end = 0;
         else
                 irq_res.flags = 0;