target/linux/layerscape/patches-5.4/701-net-0343-staging-dpaa2-ethsw-move-port-notifier-per-ethsw.patch

   1 From daaa4e77f9bc9e67fa3fd973d4455631d59fb898 Mon Sep 17 00:00:00 2001
   2 From: Ioana Ciornei <ioana.ciornei@nxp.com>
   3 Date: Mon, 11 Nov 2019 18:50:55 +0200
   4 Subject: [PATCH] staging: dpaa2-ethsw: move port notifier per ethsw
   5
   6 Register a different net_device notifier block per ethsw instance.
   7 When probing multiple dpaa2-ethsw instances, without this the register
   8 will fail.
   9
  10 Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
  11 Link: https://lore.kernel.org/r/1573491058-24766-2-git-send-email-ioana.ciornei@nxp.com
  12 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  13 ---
  14  drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 13 ++++++-------
  15  drivers/staging/fsl-dpaa2/ethsw/ethsw.h |  2 ++
  16  2 files changed, 8 insertions(+), 7 deletions(-)
  17
  18 --- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
  19 +++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
  20 @@ -1174,10 +1174,6 @@ static int port_netdevice_event(struct n
  21         return notifier_from_errno(err);
  22  }
  23
  24 -static struct notifier_block port_nb __read_mostly = {
  25 -       .notifier_call = port_netdevice_event,
  26 -};
  27 -
  28  struct ethsw_switchdev_event_work {
  29         struct work_struct work;
  30         struct switchdev_notifier_fdb_info fdb_info;
  31 @@ -1328,9 +1324,11 @@ static struct notifier_block port_switch
  32
  33  static int ethsw_register_notifier(struct device *dev)
  34  {
  35 +       struct ethsw_core *ethsw = dev_get_drvdata(dev);
  36         int err;
  37
  38 -       err = register_netdevice_notifier(&port_nb);
  39 +       ethsw->port_nb.notifier_call = port_netdevice_event;
  40 +       err = register_netdevice_notifier(&ethsw->port_nb);
  41         if (err) {
  42                 dev_err(dev, "Failed to register netdev notifier\n");
  43                 return err;
  44 @@ -1353,7 +1351,7 @@ static int ethsw_register_notifier(struc
  45  err_switchdev_blocking_nb:
  46         unregister_switchdev_notifier(&port_switchdev_nb);
  47  err_switchdev_nb:
  48 -       unregister_netdevice_notifier(&port_nb);
  49 +       unregister_netdevice_notifier(&ethsw->port_nb);
  50         return err;
  51  }
  52
  53 @@ -1491,6 +1489,7 @@ static int ethsw_port_init(struct ethsw_
  54
  55  static void ethsw_unregister_notifier(struct device *dev)
  56  {
  57 +       struct ethsw_core *ethsw = dev_get_drvdata(dev);
  58         struct notifier_block *nb;
  59         int err;
  60
  61 @@ -1505,7 +1504,7 @@ static void ethsw_unregister_notifier(st
  62                 dev_err(dev,
  63                         "Failed to unregister switchdev notifier (%d)\n", err);
  64
  65 -       err = unregister_netdevice_notifier(&port_nb);
  66 +       err = unregister_netdevice_notifier(&ethsw->port_nb);
  67         if (err)
  68                 dev_err(dev,
  69                         "Failed to unregister netdev notifier (%d)\n", err);
  70 --- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
  71 +++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
  72 @@ -66,6 +66,8 @@ struct ethsw_core {
  73
  74         u8                              vlans[VLAN_VID_MASK + 1];
  75         bool                            learning;
  76 +
  77 +       struct notifier_block           port_nb;
  78  };
  79
  80  #endif /* __ETHSW_H */