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SubjectRe: Subtle semantic issue with sleep callbacks in drivers
Date
> > > The video BIOS on a card often contains information that is found
> > > -nowhere- else. Not in the chip docs. Not in a device driver.
> > > Such information can and does vary from board-to-board, such as RAM
> > > timings, while the chip remains unchanged.
> >
> > Incidently, what happens if we:
> >
> > * Suspend
> > * Swap VGA card with another one
> > * Restore
>
> When it breaks, you get to keep both pieces.
>
> That's a "Don't Do That" issue for any hardware between suspend
> and resume.

Hmm, well what about with a PCI hotswap capable board - presumably
then we could have the situation where a new VGA card appears that we
_have_ to POST?

John.
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