Re: device_suspend() levels [was Re: [patch] ACPI work on aic7xxx]

Benjamin Herrenschmidt
2004-07-28T01:24:18Z

On Mon, 2004-07-26 at 03:32, Andre Hedrick wrote:
> Ben,
>
> Remember to prevent suspend "BRAIN DAMAGE", scsi has host-hba
> dma-queue-rings to manage. I have thought about this for a while and have
> considered a glass of scotch or two ease the pain.
>
> SCSI != IDE
>
> IDE is a simple child by comparison.
>
> SCSI is painful because the hardware specifically prevents raw low-level
> access to the bus-phase.

Hi Andre !

That shouldn't be a problem in our case though, but the scsi layer more
complicated command queuing mecanism is...

Ben.