1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 222011f6172c..5bf15fed0d9f 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -402,6 +402,7 @@ struct ohci_hcd {
 #define OHCI_QUIRK_FRAME_NO     0x80                    /* no big endian frame_no shift */
 #define OHCI_QUIRK_HUB_POWER    0x100                   /* distrust firmware power/oc setup */
 #define OHCI_QUIRK_AMD_ISO      0x200                   /* ISO transfers*/
+#define OHCI_QUIRK_AMD_PREFETCH 0x400                   /* pre-fetch for ISO transfer */
         // there are also chip quirks/bugs in init logic
 
         struct work_struct      nec_work;       /* Worker for NEC quirk */
@@ -433,6 +434,10 @@ static inline int quirk_amdiso(struct ohci_hcd *ohci)
 {
         return ohci->flags & OHCI_QUIRK_AMD_ISO;
 }
+static inline int quirk_amdprefetch(struct ohci_hcd *ohci)
+{
+        return ohci->flags & OHCI_QUIRK_AMD_PREFETCH;
+}
 #else
 static inline int quirk_nec(struct ohci_hcd *ohci)
 {
@@ -446,6 +451,10 @@ static inline int quirk_amdiso(struct ohci_hcd *ohci)
 {
         return 0;
 }
+static inline int quirk_amdprefetch(struct ohci_hcd *ohci)
+{
+        return 0;
+}
 #endif
 
 /* convert between an hcd pointer and the corresponding ohci_hcd */