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    SubjectRe: [Patch 3/3] Driver core: Per-subsystem multithreaded probing.
    On Mon, 16 Oct 2006 10:59:28 -0400 (EDT),
    Alan Stern <> wrote:

    > That's not quite true. You could acquire dev->parent->sem always, just to
    > be certain.

    But dev->parent->sem wouldn't be taken in the non-multithreaded path,
    so we would change the semantics.

    > However USB shouldn't use this form of multithreaded probing
    > in any case; it should instead use multiple threads for khubd.

    OK, so usb shouldn't request multithreaded probe.

    > > but
    > > that still results in bus->remove being called without a prior ->probe
    > > (but not drv->probe since dev->driver is not set at that time).
    > How so? We shouldn't call bus->remove if a driver isn't bound.

    Eh, yes. I was confused :)

    > Some other things were left out of the patch. Since we can no longer know
    > whether any drivers will get bound at all, device_attach() should now
    > return void.

    But device_bind_driver() may still return an error, if creating the
    links failed.

    Cornelia Huck
    Linux for zSeries Developer
    Tel.: +49-7031-16-4837, Mail:
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      Last update: 2006-10-16 17:29    [W:0.022 / U:8.504 seconds]
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