3 files changed, 11 insertions, 5 deletions

diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 85249395623b..c7358dd68b31 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -564,7 +564,7 @@ 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())
+        if (pcie_aspm_support_enabled())
                 flags |= OSC_ACTIVE_STATE_PWR_SUPPORT |
                         OSC_CLOCK_PWR_CAPABILITY_SUPPORT;
         if (pci_msi_enabled())
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index 3188cd96b338..bbdb4fd85b9c 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -69,6 +69,7 @@ struct pcie_link_state {
 };
 
 static int aspm_disabled, aspm_force, aspm_clear_state;
+static bool aspm_support_enabled = true;
 static DEFINE_MUTEX(aspm_lock);
 static LIST_HEAD(link_list);
 
@@ -896,6 +897,7 @@ static int __init pcie_aspm_disable(char *str)
 {
         if (!strcmp(str, "off")) {
                 aspm_disabled = 1;
+                aspm_support_enabled = false;
                 printk(KERN_INFO "PCIe ASPM is disabled\n");
         } else if (!strcmp(str, "force")) {
                 aspm_force = 1;
@@ -930,3 +932,8 @@ int pcie_aspm_enabled(void)
 }
 EXPORT_SYMBOL(pcie_aspm_enabled);
 
+bool pcie_aspm_support_enabled(void)
+{
+        return aspm_support_enabled;
+}
+EXPORT_SYMBOL(pcie_aspm_support_enabled);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 16c9f2e61977..96f70d7e058d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1002,12 +1002,11 @@ extern bool pcie_ports_auto;
 #endif
 
 #ifndef CONFIG_PCIEASPM
-static inline int pcie_aspm_enabled(void)
-{
-        return 0;
-}
+static inline int pcie_aspm_enabled(void) { return 0; }
+static inline bool pcie_aspm_support_enabled(void) { return false; }
 #else
 extern int pcie_aspm_enabled(void);
+extern bool pcie_aspm_support_enabled(void);
 #endif
 
 #ifdef CONFIG_PCIEAER