What is i8042_panic_blink() function?

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Issue

When kernel panics or panic is triggered by "sysrq + c", sometimes call trace will be printed on the console with following message:

BUG: warning at drivers/input/serio/i8042.c:851/i8042_panic_blink() (Tainted: G)

What is i8042_panic_blink() function?

Environment

Red Hat Enterprise Linux 5
kernel-2.6.18-194.el5

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