2 files changed, 12 insertions, 0 deletions

diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 7764768b6a0e..89a2f0fa10f9 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/module.h>
+#include <linux/pci-aspm.h>
 #include <acpi/acpi.h>
 #include <acpi/acnamesp.h>
 #include <acpi/acresrc.h>
@@ -372,6 +373,12 @@ static int __init acpi_pci_init(void)
                 printk(KERN_INFO"ACPI FADT declares the system doesn't support MSI, so disable it\n");
                 pci_no_msi();
         }
+
+        if (acpi_gbl_FADT.boot_flags & BAF_PCIE_ASPM_CONTROL) {
+                printk(KERN_INFO"ACPI FADT declares the system doesn't support PCIe ASPM, so disable it\n");
+                pcie_no_aspm();
+        }
+
         ret = register_acpi_bus_type(&acpi_pci_bus);
         if (ret)
                 return 0;
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index f82495583e63..759c51a4e399 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -808,6 +808,11 @@ static int __init pcie_aspm_disable(char *str)
 
 __setup("pcie_noaspm", pcie_aspm_disable);
 
+void pcie_no_aspm(void)
+{
+        aspm_disabled = 1;
+}
+
 #ifdef CONFIG_ACPI
 #include <acpi/acpi_bus.h>
 #include <linux/pci-acpi.h>