Manish Ahuja writes:

During power outages, the ups notifies the system for a shutdown. In the 
current setup, it isn't possible to power on when power is restored. 
This patch fixes the issue by calling the right ibm,power-off-ups token 
during such events. It also adds a proc interface so that rc.powerfail 
can parse the epow events and modify the power-off behavior accordingly 
to enable the right token to be called.

With this patch, the kernel won't build if CONFIG_PPC_RTAS=y and
CONFIG_RTAS_PROC=n.  Please move the definition of rtas_poweron_auto
from rtas-proc.c to rtas.c so that this (admittedly somewhat strange)
config will build.

Thanks,
Paul.