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Re: power management and pseudo-devices

On Sun, Jul 18, 2010 at 07:14:57AM -0700, Paul Goyette wrote:
> Currently, pseudo-devices are silently attached to the device tree
> without giving the driver any access to the associated device_t
> structure.  As a result, the pseudo-device driver is unable to
> access much of the pmf framework.  In particular, the pseudo-device
> cannot register a suspend/resume/shutdown handler, nor can it
> register to receive pmf event notifications.
> It seems to me that it would be reasonably useful for pseudo-devices
> to be capabile of participating in pmf.  One particular example I've
> run into recently is the swwdog pseudo-device.  Other watchdog
> drivers can prevent a suspend if their timer is armed, but since
> swwdog is only a pseudo-device it cannot register a pmf handler.

Convert it to a defpseudodev then.

Quentin Garnier - -
"See the look on my face from staying too long in one place
[...] every time the morning breaks I know I'm closer to falling"
KT Tunstall, Saving My Face, Drastic Fantastic, 2007.

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