[resend][Bionic SRU][Patch 0/1] ipmi: Fix timer race with module unload

[Manoj Iyer]

In my previous request I was missing linux-next in my cherry-picked from 
commit line, fixed that this time around.

Please consider the following patch that fixes a kernel panic on 
removing and inserting the ipmi_ssif module in a loop. This is due to 
mod_timer from arming a timer that was already removed by del_timer during 
module unload.

This fixes bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1799281

The patch was cleanly cherry-picked from linux-next onto latest bionic 
tree and tested by me on a Cavium ThunderX2 system. Please refer to the bug
report for details on testing.