LINUX_REBOOT_CMD_HALT
common_shutdown(LINUX_REBOOT_CMD_HALT, NULL);
case LINUX_REBOOT_CMD_HALT:
case LINUX_REBOOT_CMD_HALT:
case LINUX_REBOOT_CMD_HALT:
cmd = LINUX_REBOOT_CMD_HALT;
case LINUX_REBOOT_CMD_HALT:
#define RB_HALT_SYSTEM LINUX_REBOOT_CMD_HALT