Re: turning off individual devices

["Keld Jørn Simonsen" <keld-6PR53cSIHaE@public.gmane.org>]

On Fri, Mar 05, 2004 at 11:21:37PM -0500, Dino Klein wrote:
> check kernel/Documentation/power/devices.txt
> the value there indicates in which state to put the device after the driver detaches from it.

Yes, I did read that document before posting. That document says that:
A value of 4 indicates that the device should be shutdown, so
->shutdown() will be called for that device.

But it does not seem to have an effect.
And I do not seem to have a driver running for that device.

But does that matter whether the device is in use or not?
Or should there be an error message if the device is in use?

> ----- Original Message ----- 
> From: "Keld Jørn Simonsen" <keld-6PR53cSIHaE@public.gmane.org>
> To: <acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
> Sent: Friday, March 05, 2004 5:21 PM
> Subject: [ACPI] turning off individual devices
> 
> 
> > I try to turn off individual devices by saying
> >
> >    echo -n 4 >  /sys/devices/pci0000:00/0000:00:1f.6/detach_state
> >
> > But it seems that nothing happens. Am I missing something?
> > Kernel 2.6.3
> >
> > Keld


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