In file kernel/sys.c, the function
asmlinkage int sys_reboot(int magic1, int magic2, int cmd, void * arg);
takes the commands LINUX_REBOOT_CMD_HALT and LINUX_REBOOT_CMD_POWER_OFF.
Am I right that the first command code should be passed to sys_reboot() on
system halt with CONFIG_APM_POWER_OFF=y ?
If sys_reboot() calls machine_power_off() instead of machine_halt(),
on my notebook kernel 2.1.39 turns off power like 2.0.30.
case LINUX_REBOOT_CMD_HALT:
notifier_call_chain(&reboot_notifier_list, SYS_HALT, NULL);
printk(KERN_EMERG "System halted.\n");
#if defined(CONFIG_APM) && defined(CONFIG_APM_POWER_OFF)
machine_power_off();
#else
machine_halt();
#endif
do_exit(0);
break;
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Fritz Crusius, h0444vlt@rz.hu-berlin.de