queue-4.4/pci-mark-atheros-ar9462-to-avoid-bus-reset.patch

   1 From 6afb7e26978da5e86e57e540fdce65c8b04f398a Mon Sep 17 00:00:00 2001
   2 From: James Prestwood <james.prestwood@linux.intel.com>
   3 Date: Mon, 7 Jan 2019 13:32:48 -0800
   4 Subject: PCI: Mark Atheros AR9462 to avoid bus reset
   5
   6 From: James Prestwood <james.prestwood@linux.intel.com>
   7
   8 commit 6afb7e26978da5e86e57e540fdce65c8b04f398a upstream.
   9
  10 When using PCI passthrough with this device, the host machine locks up
  11 completely when starting the VM, requiring a hard reboot.  Add a quirk to
  12 avoid bus resets on this device.
  13
  14 Fixes: c3e59ee4e766 ("PCI: Mark Atheros AR93xx to avoid bus reset")
  15 Link: https://lore.kernel.org/linux-pci/20190107213248.3034-1-james.prestwood@linux.intel.com
  16 Signed-off-by: James Prestwood <james.prestwood@linux.intel.com>
  17 Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
  18 CC: stable@vger.kernel.org      # v3.14+
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  20
  21 ---
  22  drivers/pci/quirks.c |    1 +
  23  1 file changed, 1 insertion(+)
  24
  25 --- a/drivers/pci/quirks.c
  26 +++ b/drivers/pci/quirks.c
  27 @@ -3141,6 +3141,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_A
  28  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
  29  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
  30  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
  31 +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);
  32
  33  static void quirk_no_pm_reset(struct pci_dev *dev)
  34  {