There is only one place in the other hooks / scripts where we have a specific handling for the PS3, in the global hook-functions (dep additions)
if [ -e /sys/bus/ps3_system_bus/ ]; then
for x in ps3disk ps3rom ps3-gelic ps3_sys_manager; do
Would it make sense to push a patch to the thermal hook using this check inside the powerpc case?
I'll try to do that tomorrow (unless someone shouts that this is wrong).