Configure the MAX_FL (Maximum Frame Length) register according to the
current MTU value, which ensures that packets exceeding the configured MTU
trigger an RX error.

Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
---
 drivers/net/ethernet/freescale/fec_main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 642e19187128..5b71c4cf86bc 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1147,9 +1147,8 @@ fec_restart(struct net_device *ndev)
 	u32 ecntl = FEC_ECR_ETHEREN;
 
 #ifdef OPT_ARCH_HAS_MAX_FL
-	rcntl |= fep->max_buf_size << 16;
+	rcntl |= (fep->netdev->mtu + ETH_HLEN + ETH_FCS_LEN) << 16;
 #endif
-
 	if (fep->bufdesc_ex)
 		fec_ptp_save_state(fep);
 
-- 
2.43.0