xhci: add port status tracing for Get Port Status hub requests

Add tracing showing the port status register content each time
the xhci roothub receives a Get Port Status request.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 64e1b9b..1a1856b 100644 (file)
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -1076,6 +1076,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
                        retval = -ENODEV;
                        break;
                }
+               trace_xhci_get_port_status(wIndex, temp);
                status = xhci_get_port_status(hcd, bus_state, port_array,
                                wIndex, temp, flags);
                if (status == 0xffffffff)

diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h
index 67ff314..6c093db 100644 (file)
--- a/drivers/usb/host/xhci-trace.h
+++ b/drivers/usb/host/xhci-trace.h
@@ -494,6 +494,11 @@ DEFINE_EVENT(xhci_log_portsc, xhci_handle_port_status,
             TP_ARGS(portnum, portsc)
 );
 
+DEFINE_EVENT(xhci_log_portsc, xhci_get_port_status,
+            TP_PROTO(u32 portnum, u32 portsc),
+            TP_ARGS(portnum, portsc)
+);
+
 DECLARE_EVENT_CLASS(xhci_dbc_log_request,
        TP_PROTO(struct dbc_request *req),
        TP_ARGS(req),