Re: Subtle semantic issue with sleep callbacks in drivers

From: Jeff Garzik (
Date: Thu Apr 17 2003 - 10:09:26 EST

On Thu, Apr 17, 2003 at 04:09:25PM +0100, John Bradford wrote:
> > 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.


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