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    Subject[PATCH 5.1 095/122] PCI: Mark Atheros AR9462 to avoid bus reset
    Date
    From: James Prestwood <james.prestwood@linux.intel.com>

    commit 6afb7e26978da5e86e57e540fdce65c8b04f398a upstream.

    When using PCI passthrough with this device, the host machine locks up
    completely when starting the VM, requiring a hard reboot. Add a quirk to
    avoid bus resets on this device.

    Fixes: c3e59ee4e766 ("PCI: Mark Atheros AR93xx to avoid bus reset")
    Link: https://lore.kernel.org/linux-pci/20190107213248.3034-1-james.prestwood@linux.intel.com
    Signed-off-by: James Prestwood <james.prestwood@linux.intel.com>
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    CC: stable@vger.kernel.org # v3.14+
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/pci/quirks.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/pci/quirks.c
    +++ b/drivers/pci/quirks.c
    @@ -3408,6 +3408,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_A
    DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset);
    DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset);
    DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset);
    +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset);

    /*
    * Root port on some Cavium CN8xxx chips do not successfully complete a bus

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