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修改led为gpio
hc
2024-10-12
a5969cabbb4660eab42b6ef0412cbbd1200cf14d
[~hc/RK356X_SDK_RELEASE.git]
/
kernel
/
Documentation
/
admin-guide
/
clearing-warn-once.rst
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Clearing WARN_ONCE
------------------
WARN_ONCE / WARN_ON_ONCE / printk_once only emit a message 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.