kernel_can_power_off
if (kernel_can_power_off()) {
if (kernel_can_power_off()) {
extern bool kernel_can_power_off(void);
if (kernel_can_power_off()) {
EXPORT_SYMBOL_GPL(kernel_can_power_off);
if ((cmd == LINUX_REBOOT_CMD_POWER_OFF) && !kernel_can_power_off()) {