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    SubjectRe: [PATCH] PCI: Add pci shutdown ability
    On Mon, Apr 25, 2005 at 10:42:07PM +0200, Pavel Machek wrote:
    > Hi!
    > > Well it seems that people are starting to want to hook the reboot
    > > notifier, or the device shutdown facility in order to properly shutdown
    > > pci drivers to make kexec work nicer.
    > >
    > > So here's a patch for the PCI core that allows pci drivers to now just
    > > add a "shutdown" notifier function that will be called when the system
    > > is being shutdown. It happens just after the reboot notifier happens,
    > > and it should happen in the proper device tree order, so everyone should
    > > be happy.
    > >
    > > Any objections to this patch?
    > Yes.
    > I believe it should just do suspend(PMSG_SUSPEND) before system
    > shutdown. If you think distintion between shutdown and suspend is
    > important (I am not 100% convinced it is), we can just add flag
    > saying "this is system shutdown".

    So if I understand this correctly, you'd like to manually turn off devices
    during a power off. I believe the ACPI spec recommends this for S4 (but also
    to leave on wake devices), but not necessarily S5. Still it may be a good
    idea. Comments?

    > Actually this patch should be in the queue somewhere... We had it in
    > suse trees for a long time, and IMO it can solve problem easily.

    Yeah, that's what I had in mind when I mentioned PMSG_FREEZE. It seems
    to replace "shutdown" in many ways, is this correct?

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