On Sat, Jan 27, 2007 at 02:04:43AM -0500, Len Brown wrote:
> From: John Keller <[email protected]>
>
> Support for dynamic loading and unloading of ACPI SSDT tables upon slot
> hotplugs and unplugs.
>
> On SN platforms, we now represent every populated root bus slot with a single
> ACPI SSDT table containing info for every device and PPB attached to the slot.
> These SSDTs are generated by the prom at initial boot and hotplug time. The
> info in these SSDT tables is used by the SN kernel IO "fixup" code (which is
> called at boot and hotplug time).
>
> On hotplugs (i.e. enable_slot()), if running with an ACPI capable prom,
> attempt to obtain a new ACPI SSDT table for the slot being hotplugged. If
> successful, add the table to the ACPI namespace (acpi_load_table()) and then
> walk the new devices and add them to the ACPI infrastructure (acpi_bus_add()).
>
> On hot unplugs (i.e. disable_slot()), if running with an ACPI capable prom,
> attempt to remove the SSDT table associated with the slot from the ACPI
> namespace (acpi_unload_table_id()) and infastructure (acpi_bus_trim()).
>
> From: John Keller <[email protected]>
>
> A bug was fixed where the sgi hotplug driver was removing
> the slot's SSDT table from the ACPI namespace a bit too early in
> disable_slot(). Also, we now call acpi_bus_start() subsequent
> to acpi_bus_add().
>
> Signed-off-by: Aaron Young <[email protected]>
> Cc: Greg KH <[email protected]>
This should go through Kristen, as she is now the pci hotplug
maintainer, not I.
thanks,
greg k-h
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