On Saturday, 5 May 2007 08:31, Andrew Morton wrote:
> On Fri, 4 May 2007 11:32:31 +0200 "Rafael J. Wysocki" <[email protected]> wrote:
>
> > Separate the hibernation (aka suspend to disk code) from the other suspend code.
> > In particular:
> > * Remove the definitions related to hibernation from include/linux/pm.h
> > * Introduce struct hibernation_ops and a new hibernate() function to hibernate
> > the system, defined in include/linux/suspend.h
> > * Separate suspend code in kernel/power/main.c from hibernation-related code
> > in kernel/power/disk.c and kernel/power/user.c (with the help of
> > hibernation_ops)
> > * Switch ACPI (the only user of pm_ops.pm_disk_mode) to hibernation_ops
>
> This causes the long-suffering Vaio to fail to power off during suspend
> to disk. It says "Please power me down manually".
Hmm, looks like a failure of acpi_hibernation_enter(). Can you please put a
printk() in there, after local_irq_restore()?
> <debugs a bit>
>
> machine_ops.halt(); points at native_machine_halt(), which is a no-op.
>
> However `halt -p' still works OK. How come it is not similarly affected?
'halt -p' probably uses acpi_power_off() (which calls
acpi_enter_sleep_state(ACPI_STATE_S5))
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