Tested on mainline kernel, seems ok:
$ uname -r 3.5.0-030500rc2-generic $ ls /sys/devices/platform/samsung/ battery_life_extender modalias power subsystem usb_charge leds performance_level rfkill uevent
Tested on mainline kernel, seems ok:
$ uname -r -generic platform/ samsung/ life_extender modalias power subsystem usb_charge
3.5.0-030500rc2
$ ls /sys/devices/
battery_
leds performance_level rfkill uevent