Re: [PATCH RFC] ahci: implement handoff quirk

[Jeff Garzik <jeff@garzik.org>]

On 06/17/2008 11:37 PM, Tejun Heo wrote:
> ahci 1.2 has an exciting! new feature called BIOS/OS handoff which
> basically is there to allow BIOS to keep tinkering with the controller
> even after OS starts executing.  I have no idea what this is useful
> for but it's there and we need to do it.
>
> This patch implements the handoff as FIXUP_HEADER as the controller
> needs to be claimed before the OS changes any configuration including
> IRQ routing.
>
> I'm yet to see any controller which actually requires this, so it's
> not for inclusion yet.  Maybe keep this in a separate branch?
>
> RFC, DON'T COMMIT
> ---
>   drivers/pci/quirks.c |  109 +++++++++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 109 insertions(+)

Looking through old emails...  did AMD ever confirm the usefulness of 
this patch?  Is it actually needed in the field?  I'm guessing the 
silence implies "No"...  :)

	Jeff