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    SubjectRe: [PATCH] pci: don't enable too much HT MSI mapping -v5 -resend
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    On Freitag 27 März 2009 00:10:01 Jesse Barnes wrote:
    > On Fri, 20 Mar 2009 19:29:41 -0700
    >
    > Yinghai Lu <yinghai@kernel.org> wrote:
    > > Impact: fix bug
    > >
    > > Prakash reported that his c51-mcp51 system ondie sound card doesn't
    > > work MSI but if he hack out the HT-MSI on mcp51, the MSI will work
    > > well with sound card.
    > >
    > > this patch rework the nv_msi_ht_cap_quirk()
    > > and will only try to avoid to enable ht_msi on device following that
    > > root dev, and don't touch that root dev
    > >
    > > v3: will enable c51...
    > > v4: will enable c51 kind of without leaf too.
    > > v5: update to mainline
    > >
    > > Reported-by: Prakash Punnoor <prakash@punnoor.de>
    > > Signed-off-by: Yinghai Lu <yinghai@kernel.org>
    >
    > Applied, thanks. Prakash if you get a chance can you try testing my
    > linux-next branch (or just linux-next in general tomorrow) to make sure
    > this is still ok for you?
    >
    > Thanks,

    Finally I am able to test the linux-next branch of pci tree after Jesse gave
    some help with git.(Is it correct that the kernel calls itself 2.6.28-rc8? I
    looked into quirks.c and it seems to be correctly patched.) Unfortunately it
    doesn't seem to work for me (and I am wondering why as the old v4 version
    seemed to work ontop of one of the 2.6.29-rc versions):

    dmesg|grep HT
    pci 0000:00:00.0: Found disabled HT MSI Mapping
    pci 0000:00:03.0: Enabling HT MSI Mapping
    pci 0000:00:09.0: Found disabled HT MSI Mapping
    pci 0000:00:0e.0: Enabling HT MSI Mapping
    pci 0000:00:09.0: Found disabled HT MSI Mapping
    pci 0000:00:0f.0: Enabling HT MSI Mapping
    pci 0000:00:09.0: Found disabled HT MSI Mapping
    pci 0000:00:10.0: Enabling HT MSI Mapping
    pci 0000:00:09.0: Found disabled HT MSI Mapping
    pci 0000:00:10.1: Enabling HT MSI Mapping

    Device 09.0 doesn't get enabled (good) but 00.0 also not (bad). Then my Intel
    HDA cannot use MSI.

    Regards,

    Prakash

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