On Wed, Jun 21, 2017 at 10:39:07AM +0200, Alexandre Belloni wrote:

On 21/06/2017 at 09:51:52 +0200, Pavel Machek wrote:

quoted

If someone uses different threshold, well, there will be
confusion. But only for users that have their rtc set to the past,
which is quite unusual.

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.

... and that basically means you can't use hardware that stores RTC
time as a 32-bit number of seconds past 2106.

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.

Not for the case being discussed.  A 32-bit counter of seconds knows
nothing about leap years - all that is handled by the conversion
functions.

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