target/linux/layerscape/patches-5.4/809-jailhouse-0007-ivshmem-net-Switch-to-reset-state-on-each-net-stop-a.patch

   1 From 869dce4a7f48b0642e4c902c5d142503dbd37dda Mon Sep 17 00:00:00 2001
   2 From: Jan Kiszka <jan.kiszka@siemens.com>
   3 Date: Sun, 1 Jan 2017 15:43:37 +0100
   4 Subject: [PATCH] ivshmem-net: Switch to reset state on each net stop and on
   5  driver removal
   6
   7 Improves the state signaling to the remote side after ifconfig down and
   8 driver removal.
   9
  10 Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
  11 (cherry picked from commit d0f632b2830146d9892a2b1ab93f866f072412bb)
  12 ---
  13  drivers/net/ivshmem-net.c | 5 ++++-
  14  1 file changed, 4 insertions(+), 1 deletion(-)
  15
  16 --- a/drivers/net/ivshmem-net.c
  17 +++ b/drivers/net/ivshmem-net.c
  18 @@ -554,6 +554,8 @@ static void ivshm_net_do_stop(struct net
  19  {
  20         struct ivshm_net *in = netdev_priv(ndev);
  21
  22 +       ivshm_net_set_state(in, IVSHM_NET_STATE_RESET);
  23 +
  24         if (!test_and_clear_bit(IVSHM_NET_FLAG_RUN, &in->flags))
  25                 return;
  26
  27 @@ -593,7 +595,6 @@ static void ivshm_net_state_change(struc
  28                 } else {
  29                         netif_carrier_off(ndev);
  30                         ivshm_net_do_stop(ndev);
  31 -                       ivshm_net_set_state(in, IVSHM_NET_STATE_RESET);
  32                 }
  33                 break;
  34         }
  35 @@ -899,6 +900,8 @@ static void ivshm_net_remove(struct pci_
  36         struct net_device *ndev = pci_get_drvdata(pdev);
  37         struct ivshm_net *in = netdev_priv(ndev);
  38
  39 +       writel(IVSHM_NET_STATE_RESET, &in->ivshm_regs->lstate);
  40 +
  41         if (in->using_msix)  {
  42                 free_irq(in->msix.vector, ndev);
  43                 pci_disable_msix(pdev);