EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe

When adding/deleting mdb entries on other net_devices, eg., tap
interfaces, it should not crash.

Signed-off-by: Casper Andersson <redacted>
---
 drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c

b/drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
index 40ef9fad3a77..ec07f7d0528c 100644

--- a/drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c

@@ -397,6 +397,9 @@ static int sparx5_handle_port_mdb_add(struct net_device *dev,

        bool is_host;
        int res, err;

+       if (!sparx5_netdevice_check(dev))
+               return -EOPNOTSUPP;
+
        is_host = netif_is_bridge_master(v->obj.orig_dev);

        /* When VLAN unaware the vlan value is not parsed and we receive vid 0.

@@ -480,6 +483,9 @@ static int sparx5_handle_port_mdb_del(struct net_device *dev,

        u32 mact_entry, res, pgid_entry[3], misc_cfg;
        bool host_ena;

+       if (!sparx5_netdevice_check(dev))
+               return -EOPNOTSUPP;
+
        if (!br_vlan_enabled(spx5->hw_bridge_dev))
                vid = 1;
        else
--
2.30.2