PCI: Rework ASPM disable code

[pandora-kernel.git] / drivers / acpi / pci_root.c

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 2672c79..7aff631 100644 (file)
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -596,6 +596,13 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device)
                if (ACPI_SUCCESS(status)) {
                        dev_info(root->bus->bridge,
                                "ACPI _OSC control (0x%02x) granted\n", flags);
+                       if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) {
+                               /*
+                                * We have ASPM control, but the FADT indicates
+                                * that it's unsupported. Clear it.
+                                */
+                               pcie_clear_aspm(root->bus);
+                       }
                } else {
                        dev_info(root->bus->bridge,
                                "ACPI _OSC request failed (%s), "