1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 96e68e841539..9fe026b1c9d0 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -347,6 +347,9 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
         /* Indicate support for various _OSC capabilities. */
         if (pci_ext_cfg_avail(root->bus->self))
                 flags |= OSC_EXT_PCI_CONFIG_SUPPORT;
+        if (pcie_aspm_enabled())
+                flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
+                        OSC_CLOCK_PWR_CAPABILITY_SUPPORT;
         if (flags != base_flags)
                 pci_acpi_osc_support(device->handle, flags);