1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index ffe1625d4e1b..79ea627e8b8a 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1058,6 +1058,8 @@ struct xhci_hcd {
         int                     noops_submitted;
         int                     noops_handled;
         int                     error_bitmask;
+        unsigned int            quirks;
+#define XHCI_LINK_TRB_QUIRK     (1 << 0)
 };
 
 /* For testing purposes */
@@ -1136,6 +1138,13 @@ static inline void xhci_write_64(struct xhci_hcd *xhci,
         writel(val_hi, ptr + 1);
 }
 
+static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
+{
+        u32 temp = xhci_readl(xhci, &xhci->cap_regs->hc_capbase);
+        return ((HC_VERSION(temp) == 0x95) &&
+                        (xhci->quirks & XHCI_LINK_TRB_QUIRK));
+}
+
 /* xHCI debugging */
 void xhci_print_ir_set(struct xhci_hcd *xhci, struct xhci_intr_reg *ir_set, int set_num);
 void xhci_print_registers(struct xhci_hcd *xhci);