diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index e2fc412..83ca454 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -419,10 +419,11 @@
 
 	/* two bitmaps:  ports removable, and usb 1.0 legacy PortPwrCtrlMask */
 	rh = roothub_b (ohci);
+	memset(desc->bitmap, 0xff, sizeof(desc->bitmap));
 	desc->bitmap [0] = rh & RH_B_DR;
 	if (ports > 7) {
 		desc->bitmap [1] = (rh & RH_B_DR) >> 8;
-		desc->bitmap [2] = desc->bitmap [3] = 0xff;
+		desc->bitmap [2] = 0xff;
 	} else
 		desc->bitmap [1] = 0xff;
 }