net: systemport: set dev->max_mtu to UMAC_MAX_MTU_SIZE

[ Upstream commit 54ddbdb024882e226055cc4c3c246592ddde2ee5 ]

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 <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20201218173843.141046-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
index 0fdd19d..b1ae9eb 100644 (file)
--- 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)
                         NETIF_F_HW_VLAN_CTAG_TX;
        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;