Subject: Re: pmf(9): shutdown & D1/D2 states
To: None <email@example.com>
From: Joerg Sonnenberger <firstname.lastname@example.org>
Date: 12/25/2007 14:35:07
On Mon, Dec 24, 2007 at 12:58:00AM -0500, Greg Troxel wrote:
> We have 4 states, and thus a key qusetion is if arbitrary transitions
> (12 of them!) are allowed, or only D0<>Dn for n!=0, which is 6. Perhaps
> the resume callback takes it from any of D to D0.
At least for PCI, only D0 -> Dn and Dn -> D0 are allowed. I think in
general that is a fine requirement.