From 5376be63ff4ff357d40dbe75c925d7cd5aef19a9 Mon Sep 17 00:00:00 2001
From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Date: Fri, 18 Nov 2016 14:51:05 +0200
Subject: [PATCH] intel_th: Output devices without ports don't need assigning
Git-commit: 5376be63ff4ff357d40dbe75c925d7cd5aef19a9
Patch-mainline: v4.14-rc1
References: FATE#325099

Output subdevices that rely on other output subdevices (or otherwise
don't directly talk to an output port on the switch) don't need to be
assigned an output port either.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/hwtracing/intel_th/intel_th.h |   23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

--- a/drivers/hwtracing/intel_th/intel_th.h
+++ b/drivers/hwtracing/intel_th/intel_th.h
@@ -96,6 +96,16 @@ intel_th_device_get_resource(struct inte
 	return NULL;
 }
 
+/*
+ * GTH, output ports configuration
+ */
+enum {
+	GTH_NONE = 0,
+	GTH_MSU,	/* memory/usb */
+	GTH_CTP,	/* Common Trace Port */
+	GTH_PTI = 4,	/* MIPI-PTI */
+};
+
 /**
  * intel_th_output_assigned() - if an output device is assigned to a switch port
  * @thdev:	the output device
@@ -106,7 +116,8 @@ static inline bool
 intel_th_output_assigned(struct intel_th_device *thdev)
 {
 	return thdev->type == INTEL_TH_OUTPUT &&
-		thdev->output.port >= 0;
+		(thdev->output.port >= 0 ||
+		 thdev->output.type == GTH_NONE);
 }
 
 /**
@@ -250,16 +261,6 @@ enum {
 };
 
 /*
- * GTH, output ports configuration
- */
-enum {
-	GTH_NONE = 0,
-	GTH_MSU,	/* memory/usb */
-	GTH_CTP,	/* Common Trace Port */
-	GTH_PTI = 4,	/* MIPI-PTI */
-};
-
-/*
  * Scratchpad bits: tell firmware and external debuggers
  * what we are up to.
  */