[PATCH 4/4] drivers/pci/hotplug: Support surprise hotplug

[Michael Ellerman]

Gavin Shan <gwshan at linux.vnet.ibm.com> writes:

> This supports PCI surprise hotplug. The design is highlighted as
> below:
>
>    * The PCI slot's surprise hotplug capability is exposed through
>      device node property "ibm,slot-surprise-pluggable", meaning
>      PCI surprise hotplug will be disabled if skiboot doesn't support
>      it yet.
>    * The interrupt because of presence or link state change is raised
>      on surprise hotplug event. One event is allocated and queued to
>      the PCI slot for workqueue to pick it up and process in serialized
>      fashion. The code flow for surprise hotplug is same to that for
>      managed hotplug except: the affected PEs are put into frozen state
>      to avoid unexpected EEH error reporting in surprise hot remove path.
>
> Signed-off-by: Gavin Shan <gwshan at linux.vnet.ibm.com>
> ---
>  arch/powerpc/include/asm/pnv-pci.h |   9 ++
>  drivers/pci/hotplug/pnv_php.c      | 219 +++++++++++++++++++++++++++++++++++++

Can you please resend this and Cc linux-pci and Bjorn, thanks.

cheers