The usb power hook probably needs to save and restore all
controller registers.  The current one doesn't do that;
it assumes the APM BIOS does it.

	-- Lennart

Love wrote:
> Love <lha@stacken.kth.se> writes:
> 
> 
>>Hello
>>
>>With this patch (and some more glue code) suspend no longer faults when
>>suspending, when unsuspending however something gets might upset and usb
>>code complains loadly and then the ata driver makes the machine hang (tells
>>me missed interrupt and then the harddisk light lights up and never goes
>>out).
> 
> 
> wd doesn't have a powerhook, if I add one that reset the channel the t30 no
> longer locks hard when doing resume. usb still sad, and backlight is be on
> after suspend.
> 
> http://people.su.se/~lha/patches/netbsd/acpi-ata-power-hook
> 
> Love
>