diff --git a/arch/x86_64/kernel/pci-calgary.c b/arch/x86_64/kernel/pci-calgary.c
index f541fb564d92b048f99c2fe2ce733c86e2bcdf7f..caf84e4e4ca99d1bc6eab606ae3b2a7e7f4d41e1 100644
--- a/arch/x86_64/kernel/pci-calgary.c
+++ b/arch/x86_64/kernel/pci-calgary.c
@@ -117,7 +117,7 @@ static int calgary_detected __read_mostly = 0;
 
 struct calgary_bus_info {
 	void *tce_space;
-	int translation_disabled;
+	unsigned char translation_disabled;
 	signed char phbid;
 };