meta-agl-jailhouse/recipes-kernel/linux/linux/0021-ivshmem-net-Fix-stuck-state-machine-during-setup.patch

   1 From b8d8821cfa8aa53aa29c0b230330afcd79ee7f60 Mon Sep 17 00:00:00 2001
   2 From: Jan Kiszka <jan.kiszka@siemens.com>
   3 Date: Sun, 1 Jan 2017 15:54:55 +0100
   4 Subject: [PATCH 21/32] ivshmem-net: Fix stuck state machine during setup
   5
   6 If the remote side is already in INIT state (or even higher) and has a
   7 cached rstate of RESET, we won't make progress when signaling RESET
   8 again because the remote side won't send a state update. Fix this by
   9 enforcing a local check after probe completion.
  10
  11 Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
  12 ---
  13  drivers/net/ivshmem-net.c | 1 +
  14  1 file changed, 1 insertion(+)
  15
  16 diff --git a/drivers/net/ivshmem-net.c b/drivers/net/ivshmem-net.c
  17 index c52727ef40c1..9f307ec4d677 100644
  18 --- a/drivers/net/ivshmem-net.c
  19 +++ b/drivers/net/ivshmem-net.c
  20 @@ -911,6 +911,7 @@ static int ivshm_net_probe(struct pci_dev *pdev,
  21                 writel(IVSHMEM_INTX_ENABLE, &in->ivshm_regs->intxctrl);
  22
  23         writel(IVSHM_NET_STATE_RESET, &in->ivshm_regs->lstate);
  24 +       ivshm_net_check_state(ndev);
  25
  26         return 0;
  27
  28 --
  29 2.11.0
  30