xhci: Set SCT field for Set TR dequeue on streams

Nec XHCI controllers don't seem to care, but without this Intel XHCI
controllers reject Set TR dequeue commands with a COMP_TRB_ERR, leading
to the following warning:

WARN Set TR Deq Ptr cmd invalid because of stream ID configuration

And very shortly after this the system completely freezes.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index a6aa98f19a1f..2c77bf7ab9e5 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1118,9 +1118,10 @@ enum xhci_setup_dev {
 #define TRB_TO_SUSPEND_PORT(p)          (((p) & (1 << 23)) >> 23)
 #define LAST_EP_INDEX                   30
 
-/* Set TR Dequeue Pointer command TRB fields */
+/* Set TR Dequeue Pointer command TRB fields, 6.4.3.9 */
 #define TRB_TO_STREAM_ID(p)             ((((p) & (0xffff << 16)) >> 16))
 #define STREAM_ID_FOR_TRB(p)            ((((p)) & 0xffff) << 16)
+#define SCT_FOR_TRB(p)                  (((p) << 1) & 0x7)
 
 
 /* Port Status Change Event TRB fields */