Re: [PATCH] SCSI midlayer power management

James Bottomley
2004-08-12T20:48:05Z

On Thu, 2004-08-12 at 16:37, Pavel Machek wrote:
> Can't you simply reuse bootup code? It will no longer be __init,
> but it should make suspend/resume functions quite simple.

Unfortunately, no that simply.

Bootup is all about allocating these areas and initialising the card.
Resume will be about initialising the card knowing the existing areas
(and the data about the existing areas will have to be part of our
persistent data on suspend).

So, modifying the bootup to do something like

if (in_resume)
addr = read from suspend image
else
addr = dma_alloc_coherent(...)

may work.

> > to pick three drivers to do this for, that would be aic7xxx, aic79xx and
> > sym_2?
>
> No idea, only SCSI host I owned was some 8-bit isa thing....

Well, someone who's interested needs to pick a driver. It's usually
easier to persuade everyone to add the feature if there's an example to
copy...

James