timekeeping: Fix cross-timestamp interpolation on counter wrap

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cycle_between() decides whether get_device_system_crosststamp() will
interpolate for older counter readings.

cycle_between() yields wrong results for a counter wrap-around where after
< before < test, and for the case after < test < before.

Fix the comparison logic.

Fixes: 2c756feb18 ("time: Add history to cross timestamp interface supporting slower devices")
Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: John Stultz <jstultz@google.com>
Link: https://lore.kernel.org/r/20231218073849.35294-2-peter.hilber@opensynergy.com

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Peter Hilber 2023-12-18 08:38:39 +01:00 • committed by Thomas Gleixner

parent c92a7eb6c6

commit 84dccadd3e

1 changed files with 1 additions and 1 deletions

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kernel/time/timekeeping.c

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