Miroslav Lichvar 6dad2c24bf hwclock: drop all samples on reset ...

On some HW it seems it's possible to get an occasional bad reading of
the PHC (with normal delay), or in a worse case the clock can step due
to a HW/driver bug, which triggers reset of the HW clock instance. To
avoid having a bad estimate of the frequency when the next (good) sample
is accumulated, drop also the last sample which triggered the reset.

2017-08-23 15:01:30 +02:00

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