diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index 4878798..a7323d2 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -338,7 +338,6 @@
 static unsigned int sl82c105_bridge_revision(struct pci_dev *dev)
 {
 	struct pci_dev *bridge;
-	u8 rev;
 
 	/*
 	 * The bridge should be part of the same device, but function 0.
@@ -360,10 +359,9 @@
 	/*
 	 * We need to find function 0's revision, not function 1
 	 */
-	pci_read_config_byte(bridge, PCI_REVISION_ID, &rev);
 	pci_dev_put(bridge);
 
-	return rev;
+	return bridge->revision;
 }
 
 /*