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net: ibm: emac: remove unused sysrq handler for 'c' key

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Since commit d6580a9f15 ("kexec: sysrq: simplify sysrq-c handler"),
the sysrq handler for the 'c' key has been sysrq_crash_op.  Debugging
code in the ibm_emac driver also tries to register a handler for the 'c'
key, but this has no effect because register_sysrq_key() doesn't replace
existing handlers.  Since evidently no one has cared enough to fix this
in the last 8 years, and it's very rare for drivers to register sysrq
handlers (for good reason), just remove the dead code.

Signed-off-by: Eric Biggers <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Biggers 2017-04-03 22:50:20 -07:00 • committed by David S. Miller
commit 5e35141066
6 changed files with 1 additions and 306 deletions
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2
drivers/tty/sysrq.c
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@ -446,7 +446,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
*/
NULL, /* a */
&sysrq_reboot_op, /* b */
&sysrq_crash_op, /* c & ibm_emac driver debug */
&sysrq_crash_op, /* c */
&sysrq_showlocks_op, /* d */
&sysrq_term_op, /* e */
&sysrq_moom_op, /* f */