acpiphp: do not initialize existing ioapics

Currently acpiphp initializes all ioapics under the bus on which
hot-add event occured. It also initializes already working ioapics.
This patch fixes this bug.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com>
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 7cc782fec70a..c1001ad81ad4 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -841,6 +841,7 @@ ioapic_add(acpi_handle handle, u32 lvl, void *context, void **rv)
 
 static int acpiphp_configure_ioapics(acpi_handle handle)
 {
+        ioapic_add(handle, 0, NULL, NULL);
         acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
                             ACPI_UINT32_MAX, ioapic_add, NULL, NULL);
         return 0;
@@ -1075,7 +1076,8 @@ static int enable_device(struct acpiphp_slot *slot)
         pci_bus_assign_resources(bus);
         acpiphp_sanitize_bus(bus);
         acpiphp_set_hpp_values(slot->bridge->handle, bus);
-        acpiphp_configure_ioapics(slot->bridge->handle);
+        list_for_each_entry(func, &slot->funcs, sibling)
+                acpiphp_configure_ioapics(func->handle);
         pci_enable_bridges(bus);
         pci_bus_add_devices(bus);