diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c
index b4c84b363507..f91a30432056 100644
--- a/drivers/usb/host/xhci-mtk-sch.c
+++ b/drivers/usb/host/xhci-mtk-sch.c
@@ -465,7 +465,7 @@ static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset)
 		 */
 		for (j = 0; j < sch_ep->num_budget_microframes; j++) {
 			k = XHCI_MTK_BW_INDEX(base + j);
-			tmp = tt->fs_bus_bw[k] + sch_ep->bw_budget_table[j];
+			tmp = tt->fs_bus_bw[k] + sch_ep->bw_cost_per_microframe;
 			if (tmp > FS_PAYLOAD_MAX)
 				return -ESCH_BW_OVERFLOW;
 		}
@@ -539,19 +539,17 @@ static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset)
 static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used)
 {
 	struct mu3h_sch_tt *tt = sch_ep->sch_tt;
+	int bw_updated;
 	u32 base;
-	int i, j, k;
+	int i, j;
+
+	bw_updated = sch_ep->bw_cost_per_microframe * (used ? 1 : -1);
 
 	for (i = 0; i < sch_ep->num_esit; i++) {
 		base = sch_ep->offset + i * sch_ep->esit;
 
-		for (j = 0; j < sch_ep->num_budget_microframes; j++) {
-			k = XHCI_MTK_BW_INDEX(base + j);
-			if (used)
-				tt->fs_bus_bw[k] += sch_ep->bw_budget_table[j];
-			else
-				tt->fs_bus_bw[k] -= sch_ep->bw_budget_table[j];
-		}
+		for (j = 0; j < sch_ep->num_budget_microframes; j++)
+			tt->fs_bus_bw[XHCI_MTK_BW_INDEX(base + j)] += bw_updated;
 	}
 
 	if (used)