Use an array to show memory block state from '/sys/devices/system/
memory/memoryX/state', to simplify the code. Besides, WARN_ON()
is removed since the warning can be caught by the return value,
which is "ERROR-UNKNOWN-%ld\n". A system reboot caused by WARN_ON()
is definitely unexpected as Greg mentioned.
No functional change intended.
Signed-off-by: Gavin Shan <gshan@xxxxxxxxxx>
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