On Thu, Sep 01, 2005 at 01:59:32PM -0700, Nguyen, Tom L wrote:
> On Thursday, September 01, 2005 1:10 PM Andrew Morton wrote:
> > Is it not possible to do this in some single centralized place?
> Existing pci_save_state(dev)/pci_restore_state(dev) covers only 64 bytes
> of PCI header. One solution is to extend these APIs to cover up to 256
> bytes. What do you think?
>
No, we can't have these generic functions blindly save/restore
device specific parts of the config space (offset 64+). I know
of several chipset devices which have read-clear or write-clear
bits where reading/writing would have bad side effects. If at
all the pci core does this, it needs to explicitly walk the
capability list and save/restore the well known capability
registers only.
Rajesh
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