acpi_os_set_prepare_sleep 1791 drivers/acpi/osl.c void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
acpi_os_set_prepare_sleep  917 include/linux/acpi.h #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)