Sytse Wielinga <[EMAIL PROTECTED]> writes: > On Wed, Jan 26, 2005 at 07:06:50AM -0700, Eric W. Biederman wrote: > > How does the kernel shutdown fail? > It halts after saying 'acpi_power_off called'. Strangely, it only breaks when > using the Alt-SysRq-O poweroff function. Shutting down normally still powers > off the system (and does print 'acpi_power_off called'). I think it must have > something to do with the IDE devices not having powered down before > acpi_power_off is called, but I haven't seen the code so I have no idea what > really causes it to break.
I am starting to hate the poor factoring of all of this stuff in the kernel. kernel/power/poweroff.c re-implements the wheel it comes to doing poweroff a system. Instead of doing a graceful power off it skips calling the powerdown notifer and calling device_shutdown. Since I moved the acpi prepare for powerdown in device_shutdown it makes sense that code path would now fail. Do you know if there is any deliberate reason Alt-SysRq-O skips doing a normal device shutdown work? If not I think I will just extract a common factor from kernel/sys.c/sys_reboot(CMD_POWER_OFF); And have both code paths call it. Eric - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
