2 files changed, 6 insertions, 1 deletions

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 35884f279bb8..43a007cbdf65 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -911,7 +911,6 @@ enum pci_obff_signal_type {
 int pci_enable_obff(struct pci_dev *dev, enum pci_obff_signal_type);
 void pci_disable_obff(struct pci_dev *dev);
 
-bool pci_ltr_supported(struct pci_dev *dev);
 int pci_enable_ltr(struct pci_dev *dev);
 void pci_disable_ltr(struct pci_dev *dev);
 int pci_set_ltr(struct pci_dev *dev, int snoop_lat_ns, int nosnoop_lat_ns);
diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h
index 526d2c4bc3a6..80e8605b5f93 100644
--- a/include/linux/pci_regs.h
+++ b/include/linux/pci_regs.h
@@ -521,6 +521,12 @@
 #define PCI_EXP_RTSTA           32      /* Root Status */
 #define PCI_EXP_RTSTA_PME       0x10000 /* PME status */
 #define PCI_EXP_RTSTA_PENDING   0x20000 /* PME pending */
+/*
+ * Note that the following PCI Express 'Capability Structure' registers
+ * were introduced with 'Capability Version' 0x2 (v2).  These registers
+ * do not exist on devices with Capability Version 1.  Use pci_pcie_cap2()
+ * to use these fields safely.
+ */
 #define PCI_EXP_DEVCAP2         36      /* Device Capabilities 2 */
 #define  PCI_EXP_DEVCAP2_ARI    0x20    /* Alternative Routing-ID */
 #define  PCI_EXP_DEVCAP2_LTR    0x800   /* Latency tolerance reporting */