Re: [PATCH 00/51] rtc: stop using rtc deprecated functions

Pavel Machek
2017-06-21T18:08:53Z

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Hi!

> > > Or not, having an RTC set in the past is actually quite common. I'd find
> > > it weird to have a new device boot and be set to a date in the future.
> >
> > ...but still better than board stuck in the past, no?
> >
> > > Also note that the threshold or offset thing may seem like a good idea
> > > but fails with many RTCs because of how they handle leap years.
> >
> > Well, you can still convert time from rtc to unix time, then do adjustment
> > there.
> >
>
> You can only if your machine is running when that happens. If that is
> not the case, then you lost and your time is not correct anymore.

I don't see why that should be a case... as long as you know what RTC
does in event of overflow, and it is not something completely crazy.

> > Anyway, I guess it would be cool for rtc drivers to annotate what limits
> > underlying storage has to the common code, so that we can do fixups once
> > per class, not once per driver.
>
> Yes, I'm in the middle of the whole rework that allows that.
>
> I don't understand the sudden urgency of fixing that and the amount of
> bikeshedding, seeing that the closest cutoff date is actually 31st of
> december 2069 in the rtc subsystem and that anyway the current 32bit
> userspace will explode in february 2038.
>
> My plan from the beginning was to have something for the next stable. I
> know nobody can read my mind but again, I don't think there is currently
> any urgency to change anything.

Yes, mind reading is a problem. I can only read minds of ferungulates,
and only if they are physicaly near me :-).

Best regards,
Pavel

--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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