--- zzzz-none-000/linux-4.9.231/drivers/net/ethernet/sfc/tx.c	2020-07-22 07:10:54.000000000 +0000
+++ falcon-5590-729/linux-4.9.231/drivers/net/ethernet/sfc/tx.c	2022-03-30 12:03:34.000000000 +0000
@@ -573,11 +573,13 @@
 	if (ntc->type != TC_SETUP_MQPRIO)
 		return -EINVAL;
 
-	num_tc = ntc->tc;
+	num_tc = ntc->mqprio->num_tc;
 
 	if (efx_nic_rev(efx) < EFX_REV_FALCON_B0 || num_tc > EFX_MAX_TX_TC)
 		return -EINVAL;
 
+	ntc->mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
+
 	if (num_tc == net_dev->num_tc)
 		return 0;