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    SubjectRe: [SoftwareSuspend-devel] 2.6 Suspend PM issues
    Hi!

    > > > > By what was discussed wrt ALSA issue I gather that you still resume
    > > > > _all_ drivers after doing the atomic copy?
    > > > >
    > > > > As explained earlier this year, if this is the case, it is firstly
    > > > > unacceptable as it will result in loss of data in many applications and
    > > > > secondly very clumsy.
    > > > >
    > > > > Example With 2.4 OK, with 2.6 It would fail:
    > > > > A datalogger connected to a seral port of a notebook in the field. Data
    > > > > transfer in progress which can be put on hold bo lowering RTS (HW
    > > > > handshake) but _cannot_ be restarted. Battery low, must suspend to
    > > > > change battery, upon resume transfer can continue.
    > > > >
    > > > > Will this be taken care of?
    > >
    > > Driver will get enough info in its resume routine ("hey, it is resume,
    > > but it is only resume after atomic copy"), so it can ignore the resume
    > > if it really needs to.
    >
    > Each driver has to make the decision when to ignore resume? that would add a
    > lot of bloat as well as lots of work to implement and test the changes for
    > 100s of drivers...

    No, only those drivers where extra resume does some damage. So far I
    know about one, and that's your data logging device.
    Pavel
    --
    People were complaining that M$ turns users into beta-testers...
    ...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
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