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Vadim Fedorenko
f8c8bd159a
The commit in fixes introduced a high cap for delayas U64_MAX value
while ktime_t is actually s64. This is wrong cap as it becomes negative
value and any comparison to a real delay will fail to update delay
value. Use KTIME_MAX constant as correct max cap for PCIe delay.
The issue was hit in production (a negative value is observed):
# cat /sys/class/timecard/ocp0/ts_window_adjust
-3
Fixes: aa05fe67bc ("ptp: ocp: Improve PCIe delay estimation")
Signed-off-by: Vadim Fedorenko <[email protected]>
Reviewed-by: Daniel Machon <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>