diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index 8f65ad6..b12cd0c 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -123,7 +123,7 @@ int __devinit __pata_platform_probe(struct device *dev,
 	/*
 	 * And the IRQ
 	 */
-	if (irq_res && irq_res->start > 0) {
+	if (irq_res && irq_res->start != -1) {
 		irq = irq_res->start;
 		irq_flags = irq_res->flags;
 	}