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Date:   Fri, 18 Dec 2020 09:38:43 -0800
From:   Florian Fainelli <>
        Florian Fainelli <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Murali Krishna Policharla <>,
        Vladimir Oltean <>, (open list:BROADCOM SYSTEMPORT
        ETHERNET DRIVER), (open list)
Subject: [PATCH net] net: systemport: set dev->max_mtu to UMAC_MAX_MTU_SIZE

The driver is already allocating receive buffers of 2KiB and the
Ethernet MAC is configured to accept frames up to UMAC_MAX_MTU_SIZE.

Fixes: bfcb813203e6 ("net: dsa: configure the MTU for switch ports")
Signed-off-by: Florian Fainelli <>
 drivers/net/ethernet/broadcom/bcmsysport.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 0fdd19d99d99..b1ae9eb8f247 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -2577,6 +2577,7 @@ static int bcm_sysport_probe(struct platform_device *pdev)
 	dev->hw_features |= dev->features;
 	dev->vlan_features |= dev->features;
+	dev->max_mtu = UMAC_MAX_MTU_SIZE;
 	/* Request the WOL interrupt and advertise suspend if available */
 	priv->wol_irq_disabled = 1;

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