diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index ada5d2ba297be1353bf60a8f1c5dc3d5199078df..556d0ec0c1f81048044a7b6e51019a5a1d4443e5 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -323,7 +323,7 @@ static int tt_available (
 		 * already scheduled transactions
 		 */
 		if (125 < usecs) {
-			int ufs = (usecs / 125) - 1;
+			int ufs = (usecs / 125);
 			int i;
 			for (i = uframe; i < (uframe + ufs) && i < 8; i++)
 				if (0 < tt_usecs[i]) {