diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 2f82e63323f3f3147c5a2fba65d372242e176018..79be37a533973153729b0974691b79559f496a0c 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -625,6 +625,7 @@ static int pci_setup_device(struct pci_dev * dev)
 		/* The PCI-to-PCI bridge spec requires that subtractive
 		   decoding (i.e. transparent) bridge must have programming
 		   interface code of 0x01. */ 
+		pci_read_irq(dev);
 		dev->transparent = ((dev->class & 0xff) == 1);
 		pci_read_bases(dev, 2, PCI_ROM_ADDRESS1);
 		break;