diff --git a/[refs] b/[refs]
index e70c6d38df1a..03ee7e433454 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3f579c340fe6d6bdd8c6f9f144e7c3b85d4174ec
+refs/heads/master: 852972acff8f10f3a15679be2059bb94916cba5d
diff --git a/trunk/drivers/acpi/pci_root.c b/trunk/drivers/acpi/pci_root.c
index 4eac59393edc..1f67057af2a5 100644
--- a/trunk/drivers/acpi/pci_root.c
+++ b/trunk/drivers/acpi/pci_root.c
@@ -33,6 +33,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/pci.h>
 #include <linux/pci-acpi.h>
+#include <linux/pci-aspm.h>
 #include <linux/acpi.h>
 #include <linux/slab.h>
 #include <acpi/acpi_bus.h>
@@ -543,6 +544,14 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
 	if (flags != base_flags)
 		acpi_pci_osc_support(root, flags);
 
+	status = acpi_pci_osc_control_set(root->device->handle,
+					  OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL);
+
+	if (ACPI_FAILURE(status)) {
+		printk(KERN_INFO "Unable to assume PCIe control: Disabling ASPM\n");
+		pcie_no_aspm();
+	}
+
 	pci_acpi_add_bus_pm_notifier(device, root->bus);
 	if (device->wakeup.flags.run_wake)
 		device_set_run_wake(root->bus->bridge, true);