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    Subject[PATCH 3.16 215/370] x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F
    3.16.42-rc1 review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Bjorn Helgaas <bhelgaas@google.com>

    commit 89e9f7bcd8744ea25fcf0ac671b8d72c10d7d790 upstream.

    Martin reported that the Supermicro X8DTH-i/6/iF/6F advertises incorrect
    host bridge windows via _CRS:

    pci_root PNP0A08:00: host bridge window [io 0xf000-0xffff]
    pci_root PNP0A08:01: host bridge window [io 0xf000-0xffff]

    Both bridges advertise the 0xf000-0xffff window, which cannot be correct.

    Work around this by ignoring _CRS on this system. The downside is that we
    may not assign resources correctly to hot-added PCI devices (if they are
    possible on this system).

    Link: https://bugzilla.kernel.org/show_bug.cgi?id=42606
    Reported-by: Martin Burnicki <martin.burnicki@meinberg.de>
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
    ---
    arch/x86/pci/acpi.c | 10 ++++++++++
    1 file changed, 10 insertions(+)

    --- a/arch/x86/pci/acpi.c
    +++ b/arch/x86/pci/acpi.c
    @@ -118,6 +118,16 @@ static const struct dmi_system_id pci_cr
    DMI_MATCH(DMI_BIOS_VERSION, "6JET85WW (1.43 )"),
    },
    },
    + /* https://bugzilla.kernel.org/show_bug.cgi?id=42606 */
    + {
    + .callback = set_nouse_crs,
    + .ident = "Supermicro X8DTH",
    + .matches = {
    + DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
    + DMI_MATCH(DMI_PRODUCT_NAME, "X8DTH-i/6/iF/6F"),
    + DMI_MATCH(DMI_BIOS_VERSION, "2.0a"),
    + },
    + },

    /* https://bugzilla.kernel.org/show_bug.cgi?id=15362 */
    {
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