target/linux/layerscape/patches-5.4/701-net-0246-net-mscc-ocelot-limit-vlan-ingress-filtering-to-actu.patch

   1 From acc105226493e7cfdb6e72d130c36f21e951fc1f Mon Sep 17 00:00:00 2001
   2 From: Vladimir Oltean <vladimir.oltean@nxp.com>
   3 Date: Sat, 9 Nov 2019 15:02:55 +0200
   4 Subject: [PATCH] net: mscc: ocelot: limit vlan ingress filtering to actual
   5  number of ports
   6
   7 The VSC7514 switch (Ocelot) is a 10-port device, while VSC9959 (Felix)
   8 is 6-port. Therefore the VLAN filtering mask would be out of bounds when
   9 calling for this new switch. Fix that.
  10
  11 Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
  12 Signed-off-by: David S. Miller <davem@davemloft.net>
  13 ---
  14  drivers/net/ethernet/mscc/ocelot.c | 3 ++-
  15  1 file changed, 2 insertions(+), 1 deletion(-)
  16
  17 --- a/drivers/net/ethernet/mscc/ocelot.c
  18 +++ b/drivers/net/ethernet/mscc/ocelot.c
  19 @@ -389,7 +389,8 @@ static void ocelot_vlan_init(struct ocel
  20         /* Set vlan ingress filter mask to all ports but the CPU port by
  21          * default.
  22          */
  23 -       ocelot_write(ocelot, GENMASK(9, 0), ANA_VLANMASK);
  24 +       ocelot_write(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0),
  25 +                    ANA_VLANMASK);
  26
  27         for (port = 0; port < ocelot->num_phys_ports; port++) {
  28                 ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port);