From e5c75dbff074ac8c050940aeacfe02ea15726a1a Mon Sep 17 00:00:00 2001
From: Mathias Nyman <mathias.nyman@linux.intel.com>
Date: Fri, 8 Dec 2017 17:59:14 +0200
Subject: [PATCH 0531/1795] 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>
(cherry picked from commit 28c06e58602fe48eb03ec8d4bdd005094fb6a31f)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 drivers/usb/host/xhci-hub.c   | 1 +
 drivers/usb/host/xhci-trace.h | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index a6ac7c5200fe..cb725a2c9529 100644
--- 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 d09a838058ee..3d5b6bde9168 100644
--- a/drivers/usb/host/xhci-trace.h
+++ b/drivers/usb/host/xhci-trace.h
@@ -520,6 +520,11 @@ 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),
-- 
2.19.0