serial: kgdb_nmi: Remove unused knock code

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kgdb_nmi_poll_knock() has been unused since it was added in 2013 in
commit 0c57dfcc6c ("tty/serial: Add kgdb_nmi driver")

Remove it, the static helpers, and module parameters it used.

(The comment explaining why it might be used sounds sensible, but
it's never been wired up, perhaps it's worth doing somewhere?)

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://lore.kernel.org/r/20250112135759.105541-1-linux@treblig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Dr. David Alan Gilbert 2025-01-12 13:57:59 +00:00 • committed by Greg Kroah-Hartman

parent 2f83e38a09

commit 39d0be8743

2 changed files with 0 additions and 103 deletions

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101

drivers/tty/serial/kgdb_nmi.c

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2

include/linux/kgdb.h

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