nt9856x/BSP/linux-kernel/Documentation/clearing-warn-once.txt
2023-03-28 15:07:53 +08:00

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WARN_ONCE / WARN_ON_ONCE only print a warning once.
echo 1 > /sys/kernel/debug/clear_warn_once
clears the state and allows the warnings to print once again.
This can be useful after test suite runs to reproduce problems.