Re: Resume enhancement: restore pci config space

[Greg KH <greg@kroah.com>]

On Wed, May 26, 2004 at 10:35:26PM +0200, Arjan van de Ven wrote:
> Hi,
> 
> The patch below enhances the PCI layer with 2 things
> 1) enable and busmaster state are stored in the pci device struct
> 2) pci config space is stored to the pci device struct
> 
> with that, it is possible to make a generic pci resume method that restores
> config space and reenables the device, including busmaster when appropriate.
> 
> One can rightfully argue that the driver resume method should do this, and
> yes that is right. So the patch only does it for devices that don't have a
> resume method. Like the main PCI bridge on my testbox of which the bios so
> nicely forgets to restore the bus master bit during resume.. With this patch
> my testbox resumes just fine while it, well, wasn't all too happy as you can
> imagine without a busmaster pci bridge.
> 
> Comments?

This looks good to me, I've applied it to my trees, thanks.

Hm, it still doesn't let me resume properly on my laptop when I suspend
to ram, but I'm trying to track that down...

thanks,

greg k-h