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    SubjectRe: ohci1394 regression in 2.6.19-rc1 (was Re: Merge window closed: v2.6.19-rc1)
    Date
    On Thursday 05 October 2006 19:56, Stefan Richter wrote:
    > Alistair John Strachan wrote:
    > > Booted fine here, but I've got a few strange messages from the firewire
    > > subsystem that weren't present in 2.6.18. I think it marginally slows
    > > down boot up, but I could just be imagining it.
    > >
    > > [alistair] 16:04 [~] dmesg | grep 1394
    > > ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[19]
    > > MMIO=[dffff000-dffff7ff] Max Packet=[2048] IR/IT contexts=[4/8]
    > > ohci1394: fw-host1: OHCI-1394 1.1 (PCI): IRQ=[17]
    > > MMIO=[dfffc000-dfffc7ff] Max Packet=[2048] IR/IT contexts=[4/8]
    > > ohci1394: fw-host0: Running dma failed because Node ID is not valid
    > > ohci1394: fw-host0: AT dma reset ctx=0, aborting transmission
    > > ieee1394: Current remote IRM is not 1394a-2000 compliant, resetting...
    > > ieee1394: Host added: ID:BUS[0-00:1023] GUID[00023c0091023fd7]
    > > ieee1394: Host added: ID:BUS[1-00:1023] GUID[000129200003d023]
    >
    > Thanks for the quick report. Could you please test the following, each
    > one separately?
    >
    > A. Configure PCI_MULTITHREAD_PROBE=n

    Not set.

    > B. Revert patch "Initialize ieee1394 early when built in"
    > http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=comm
    >itdiff_plain;h=8df4083c5291b3647e0381d3c69ab2196f5dd3b7

    Firewire isn't built in. I assume therefore this would have no effect.

    > I don't see how any other ohci1394 patch after 2.6.18 could lead up to
    > that message. I also don't understand what causes this glitch. At least
    > it seems recoverable, according to the "Host added" lines.

    I haven't tried to use it, but I agree that the outcome is similar. I
    recompiled with excessive debug output on 2.6.19-rc1, and uploaded the
    configs for 2.6.19-rc1 and 2.6.18, and the corresponding dmesg outputs. As
    you can see, 2.6.18 does not exhibit any problems.

    --
    Cheers,
    Alistair.

    Final year Computer Science undergraduate.
    1F2 55 South Clerk Street, Edinburgh, UK.
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