1 files changed, 32 insertions, 0 deletions

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 6099facecd79..a790b1771f9f 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -670,6 +670,25 @@ static void __devinit quirk_vt8235_acpi(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA,     PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi);
 
+/*
+ * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast back-to-back:
+ *      Disable fast back-to-back on the secondary bus segment
+ */
+static void __devinit quirk_xio2000a(struct pci_dev *dev)
+{
+        struct pci_dev *pdev;
+        u16 command;
+
+        dev_warn(&dev->dev, "TI XIO2000a quirk detected; "
+                "secondary bus fast back-to-back transfers disabled\n");
+        list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) {
+                pci_read_config_word(pdev, PCI_COMMAND, &command);
+                if (command & PCI_COMMAND_FAST_BACK)
+                        pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK);
+        }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A,
+                        quirk_xio2000a);
 
 #ifdef CONFIG_X86_IO_APIC 
 
@@ -2572,6 +2591,19 @@ void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev)
         }
         pci_do_fixups(dev, start, end);
 }
+
+static int __init pci_apply_final_quirks(void)
+{
+        struct pci_dev *dev = NULL;
+
+        while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+                pci_fixup_device(pci_fixup_final, dev);
+        }
+
+        return 0;
+}
+
+fs_initcall_sync(pci_apply_final_quirks);
 #else
 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) {}
 #endif