From: <gniibe@m17n.org>

There is a missing pop-off after call of acpi_enter_sleep_state.  On
success, acpi_enter_sleep_state never returns, but on failure, it will
cause kernel OOPS.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>