PCI hotplug: acpiphp: assume device is in state D0 after powering on a slot.

Devices which do not support PCI configuration space based power
management may not otherwise be enabled.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 2f67e9bc2f96..a70fa89f76fd 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -827,6 +827,13 @@ static int __ref enable_device(struct acpiphp_slot *slot)
         acpiphp_set_hpp_values(bus);
         acpiphp_set_acpi_region(slot);
         pci_enable_bridges(bus);
+
+        list_for_each_entry(dev, &bus->devices, bus_list) {
+                /* Assume that newly added devices are powered on already. */
+                if (!dev->is_added)
+                        dev->current_state = PCI_D0;
+        }
+
         pci_bus_add_devices(bus);
 
         list_for_each_entry(func, &slot->funcs, sibling) {