• Bjorn Helgaas's avatar
    PCI hotplug: move IOAPIC support from acpiphp to ioapic driver · 204d49a5
    Bjorn Helgaas authored
    This patch moves PCI I/O APIC support from acpiphp to a separate driver.
    Like pciehp and shpchp, acpiphp handles PCI hotplug, i.e., addition and
    removal of PCI adapters.  But in addition, acpiphp handles some ACPI
    hotplug, such as the addition of new host bridges, and the I/O APIC
    support was tangled up with that.
    I don't think the I/O APIC support needs to be in acpiphp; PCI I/O APICs
    usually appear as a function on a PCI host bridge, and we'll enumerate the
    APIC before any of the devices behind the bridge that use it.
    As far as I know, nobody actually uses I/O APIC hotplug.  It depends on
    acpi_register_ioapic(), which is only implemented for ia64, and I don't
    think any vendors have supported I/O chassis hotplug yet.
    Signed-off-by: default avatarBjorn Helgaas <bjorn.helgaas@hp.com>
    Reviewed-by: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
    CC: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
    CC: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com>
    Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>