Re: O2 hangs on reboot and powerdown

["Jared D. McNeill" <jmcneill%invisible.ca@localhost>]

On 9-Jan-08, at 7:52 PM, Michael Lorenz wrote:
> I've found the problem. What happens is that ahc's shutdown hook is  
> called, in turn calls ahc_shutdown(), after that pmf_system_shutdown  
> calls sd's suspend handler which tries to flush caches but the  
> command times out since ahc is already shut down.
> So, this is not sgimips specific and will likely affect other scsi  
> drivers as well.
> I worked around if by removing the shutdown hook and adding suspend  
> and resume handlers to ahc_pci which simply call ahc_suspend and  
> ahc_resume. Since I'm not at all familiar with scsipi or the ahc  
> driver - is there anything wrong with this approach? On my O2 at  
> least it works.

This is correct -- shutdown hooks need to nuked in favour of pmf  
handlers for dependencies to work properly. Good find!

Cheers,
Jared