Subject: Re: [PM] Passing suspend level down to drivers
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Pavel Machek <pavel@suse.cz>, mochel@osdl.org, benh@kernel.crashing.org,
       axboe@suse.de, torvalds@osdl.org,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Mer, 2003-09-10 at 07:12, Stephen Rothwell wrote:
> On another note, APM does allow for individual device power management
> (i.e. you can tell the BIOS "suspend the first disk" or "power off
> all displays").  I have been wondering if we want to disable the BIOS's
> device power management now that we are begining to do it ourselves.

APM knows more about the system than we do, certainly for laptops and it
can do stuff we can't do without ACPI. Most BIOSes also don't bother
supporting most of the "suspend first foo", or for that matter always
agree with us what is first.


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