diff --git a/drivers/ssb/scan.c b/drivers/ssb/scan.c
index 45e5bab..8047f9a 100644
--- a/drivers/ssb/scan.c
+++ b/drivers/ssb/scan.c
@@ -310,8 +310,7 @@
 	} else {
 		if (bus->bustype == SSB_BUSTYPE_PCI) {
 			bus->chip_id = pcidev_to_chipid(bus->host_pci);
-			pci_read_config_byte(bus->host_pci, PCI_REVISION_ID,
-					     &bus->chip_rev);
+			bus->chip_rev = bus->host_pci->revision;
 			bus->chip_package = 0;
 		} else {
 			bus->chip_id = 0x4710;