Comment 5 for bug 1619552

------- Comment From <email address hidden> 2016-09-28 14:42 EDT-------
Before the patch::
===========

root@p8wookie:~# ps -ef | grep opal
root 782 2 0 13:39 ? 00:00:00 [kopald]
root 783 2 0 13:39 ? 00:00:00 [irq/29-opal-elo]
root 784 2 0 13:39 ? 00:00:00 [irq/30-opal-dum]
root 4089 1 0 13:40 ? 00:00:00 /usr/sbin/opal_errd
root 4733 4648 0 13:42 pts/0 00:00:00 grep --color=auto opal

root@p8wookie:~# ls /sys/firmware/opal/elog/
0x50007844

root@p8wookie:~# vi /var/log/syslog
Sep 28 13:42:56 p8wookie ELOG[4089]: LID[50007844]::SRC[B1763435]::Other Subsystems::Informational Event::No service action required
Sep 28 13:42:56 p8wookie ELOG[4089]: Failed to acknowledge elog: /sys/firmware/opal/elog/0x50007844/acknowledge (2:No such file or directory)
Sep 28 13:42:57 p8wookie ELOG[4089]: LID[50007844]::SRC[B1763435]::Other Subsystems::Informational Event::No service action required
Sep 28 13:42:57 p8wookie ELOG[4089]: Failed to acknowledge elog: /sys/firmware/opal/elog/0x50007844/acknowledge (2:No such file or directory)
Sep 28 13:42:58 p8wookie ELOG[4089]: LID[50007844]::SRC[B1763435]::Other Subsystems::Informational Event::No service action required
Sep 28 13:42:58 p8wookie ELOG[4089]: Failed to acknowledge elog: /sys/firmware/opal/elog/0x50007844/acknowledge (2:No such file or directory)
Sep 28 13:42:59 p8wookie ELOG[4089]: LID[50007844]::SRC[B1763435]::Other Subsystems::Informational Event::No service action required
Sep 28 13:42:59 p8wookie ELOG[4089]: Failed to acknowledge elog: /sys/firmware/opal/elog/0x50007844/acknowledge (2:No such file or directory)
Sep 28 13:43:00 p8wookie ELOG[4089]: LID[50007844]::SRC[B1763435]::Other Subsystems::Informational Event::No service action required
Sep 28 13:43:00 p8wookie ELOG[4089]: Failed to acknowledge elog: /sys/firmware/opal/elog/0x50007844/acknowledge (2:No such file or directory)
Sep 28 13:43:01 p8wookie ELOG[4089]: LID[50007844]::SRC[B1763435]::Other Subsystems::Informational Event::No service action required
Sep 28 13:43:01 p8wookie ELOG[4089]: Failed to acknowledge elog: /sys/firmware/opal/elog/0x50007844/acknowledge (2:No such file or directory)
Sep 28 13:43:02 p8wookie ELOG[4089]: LID[50007844]::SRC[B1763435]::Other Subsystems::Informational Event::No service action required
Sep 28 13:43:02 p8wookie ELOG[4089]: Failed to acknowledge elog: /sys/firmware/opal/elog/0x50007844/acknowledge (2:No such file or directory)
Sep 28 13:43:03 p8wookie ELOG[4089]: LID[50007844]::SRC[B1763435]::Other Subsystems::Informational Event::No service action required
Sep 28 13:43:03 p8wookie ELOG[4089]: Failed to acknowledge elog: /sys/firmware/opal/elog/0x50007844/acknowledge (2:No such file or directory)

After the patch:
==========

root@p8wookie:~# uname -a
Linux p8wookie 4.8.0-rc6mukesh+ #2 SMP Wed Sep 28 14:09:57 EDT 2016 ppc64le ppc64le ppc64le GNU/Linux
root@p8wookie:~# cat /etc/os-release
NAME="Ubuntu"
VERSION="16.10 (Yakkety Yak)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.10"
VERSION_ID="16.10"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="http://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=yakkety
UBUNTU_CODENAME=yakkety
root@p8wookie:~#

root@p8wookie:~# ps -ef | grep opal
root 782 2 0 14:35 ? 00:00:00 [kopald]
root 783 2 0 14:35 ? 00:00:00 [irq/29-opal-elo]
root 784 2 0 14:35 ? 00:00:00 [irq/30-opal-dum]
root 4141 1 0 14:36 ? 00:00:00 /usr/sbin/opal_errd
root 5011 4965 0 14:36 pts/0 00:00:00 grep --color=auto opal
root@p8wookie:~# ls /sys/firmware/opal/elog/
root@p8wookie:~# dmesg |less
root@p8wookie:~#
root@p8wookie:~# dmesg | grep Duplicate
[ 1.620962] ELOG: Duplicate logid =50007e6d
root@p8wookie:~#

It works as expected.

-Mukesh