Re: CVS commit: src/sys/kern

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Thu, Feb 21, 2008 at 11:19:15AM -0600, David Young wrote:
>         * avoid "emergency shutdown" of hard disk drives

Still has to distinguish between reboot/halt and powerdown :-(

> Finally, if the active console device does not detach, but returns EBUSY,
> then the console and all of its ancestors in the device tree will remain
> attached, which satisfies the purpose that
> 
>         * the console remains active for 'press any key to reboot'

I don't think it has to or should return EBUSY. The "functional" state
would include that the child devices can be polled, but the device
should not initiate bus DMA access etc or interrupts.

Joerg