--- zzzz-none-000/linux-3.10.107/drivers/usb/host/xhci-ext-caps.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/usb/host/xhci-ext-caps.h	2021-02-04 17:41:59.000000000 +0000
@@ -71,6 +71,7 @@
 
 /* USB 2.0 xHCI 1.0 hardware LMP capability - section 7.2.2.1.3.2 */
 #define XHCI_HLC               (1 << 19)
+#define XHCI_BLC               (1 << 20)
 
 /* command register values to disable interrupts and halt the HC */
 /* start/stop HC execution - do not write unless HC is halted*/