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    SubjectRe: [PATCH] [RFC] Advanced TCA SCSI Disk Hotswap
    On Thu, 24 Oct 2002, Greg KH wrote:

    > On Thu, Oct 24, 2002 at 07:00:23PM -0400, Scott Murray wrote:
    > >
    > > I've not implemented it yet, but I'm pretty sure I can detect surprise
    > > extractions in my cPCI driver. The only thing holding me back at the
    > > moment is that there's no clear way to report this status change via
    > > pcihpfs without doing something a bit funky like reporting "-1" in the
    > > "adapter" node.
    > Why would you need to report anything other than if the card is present
    > or not? What would a "supprise" removal cause you to do differently?

    Thinking about it a bit more, my idea to use -1 is indeed unnecessary,
    since userspace code can check if the adapter node changes to 0 before
    it itself writes a 0 to it. If multiple users/software play around with
    the nodes at the same time, they'll get what's coming to them...

    > Hm, well I guess we should be extra careful in trying to shut down any
    > driver bound to that card...

    Yeah, as Steven mentions in his reply, Linux drivers don't handle this
    well at the moment.


    Scott Murray
    SOMA Networks, Inc.
    Toronto, Ontario

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