xhci: add TSP bitflag to TRB tracing

Software can set a Transfer State Preserve (TSP) flag to maintain
data toggle and sequence number when issuing a reset endpoint
command.

xhci driver is using TSP for soft retry, we want to show TSP usage
in tracing as well

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/1567172356-12915-4-git-send-email-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index f5c4144..f9f8862 100644 (file)
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -2337,12 +2337,13 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2,
                break;
        case TRB_RESET_EP:
                sprintf(str,
-                       "%s: ctx %08x%08x slot %d ep %d flags %c",
+                       "%s: ctx %08x%08x slot %d ep %d flags %c:%c",
                        xhci_trb_type_string(type),
                        field1, field0,
                        TRB_TO_SLOT_ID(field3),
                        /* Macro decrements 1, maybe it shouldn't?!? */
                        TRB_TO_EP_INDEX(field3) + 1,
+                       field3 & TRB_TSP ? 'T' : 't',
                        field3 & TRB_CYCLE ? 'C' : 'c');
                break;
        case TRB_STOP_RING: