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    Subject[PATCH] PCI: Do not run NVidia quirks related to MSI with MSI disabled
    Date
    From: Rafael J. Wysocki <rjw@sisk.pl>

    There is no reason to run NVidia-specific quirks related to HT MSI
    mappings with MSI disabled via pci=nomsi, so make
    __nv_msi_ht_cap_quirk() return immediately in that case.

    This allows at least one machine to boot 100% of the time with
    pci=nomsi (it still doesn't boot reliably without that).

    Addresses https://bugzilla.kernel.org/show_bug.cgi?id=16443 .

    Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
    ---
    drivers/pci/quirks.c | 3 +++
    1 file changed, 3 insertions(+)

    Index: linux-2.6/drivers/pci/quirks.c
    ===================================================================
    --- linux-2.6.orig/drivers/pci/quirks.c
    +++ linux-2.6/drivers/pci/quirks.c
    @@ -2390,6 +2390,9 @@ static void __devinit __nv_msi_ht_cap_qu
    int pos;
    int found;

    + if (!pci_msi_enabled())
    + return;
    +
    /* check if there is HT MSI cap or enabled on this device */
    found = ht_check_msi_mapping(dev);


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