Re: [ACPI] Information regarding C3 cpu state and bus mastering activity

[Marco C. <mar...@gm...>]

Hi again,

> 2. Disable the busmaster. The kernel looks at the current busmaster
> activity and then chooses if it wants to disable busmaster and enter C3.

Maybe i'm completely out of target but what about, as said here by
Nate Lawson http://lists.freebsd.org/pipermail/freebsd-acpi/2004-November/0=
00835.html
, to "power down the USB host controller when idle"?

Regards,
Marco Calviani