diff options
| -rw-r--r-- | drivers/acpi/pci_root.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 4eac59393edc..1f67057af2a5 100644 --- a/drivers/acpi/pci_root.c +++ b/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); |