Re: Add NULL power handler to x86/ipmi(4)

[David Young <dyoung%pobox.com@localhost>]

On Sat, Jul 17, 2010 at 05:29:19AM -0700, Paul Goyette wrote:
> On Sat, 17 Jul 2010, David Young wrote:
> >3 Watchdog prevents suspension
> 
> As I indicated, this is fairly easy to do, simply check if the w-dog
> is armed or not.
> 
> The attached patch provides an ipmi_suspend() method to implement
> #3. But I suspect that this is really a more generic watchdog
> capability, and it should be implemented for the entire class of
> watchdogs rather than only for ipmi(4)?

It is a generic capability.  ISTM watchdog timers should eventually be
refactored in this way: each watchdog timer in the system should have a
corresponding pseudo-device, an instance of wdog(4). wdog(4) provides
its own suspension/resumption/detachment routines.  Let wdog_suspend()
return false if the watchdog is active (for now). ipmi0 should attach
wdog0 using a wdogbus interface attribute.  Let struct sysmon_wdog
become the watchdog attachment arguments, wdog_attach_args.

Your patch looks fine.

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933