target/linux/layerscape/patches-5.4/809-jailhouse-0009-ivshmem-net-Fix-stuck-state-machine-during-setup.patch

   1 From 74de99b0e1df634949c45df1c370d458e6a3c98a 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] 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 (cherry picked from commit fceed9d0ab2486589c57c0793fbfbca4832442b9)
  13 ---
  14  drivers/net/ivshmem-net.c | 1 +
  15  1 file changed, 1 insertion(+)
  16
  17 --- a/drivers/net/ivshmem-net.c
  18 +++ b/drivers/net/ivshmem-net.c
  19 @@ -911,6 +911,7 @@ static int ivshm_net_probe(struct pci_de
  20                 writel(IVSHMEM_INTX_ENABLE, &in->ivshm_regs->intxctrl);
  21
  22         writel(IVSHM_NET_STATE_RESET, &in->ivshm_regs->lstate);
  23 +       ivshm_net_check_state(ndev);
  24
  25         return 0;
  26