From 9bcde4b466bb52022aa72889c3e4be07aca815ce Mon Sep 17 00:00:00 2001
From: Ross Owen <ross@xmos.com>
Date: Fri, 15 Jul 2016 15:13:39 +0100
Subject: [PATCH] SPDIF_TX_INDEX not defined warning only emitted when SPDIF_TX
 defined

---
 CHANGELOG.rst                | 1 +
 module_usb_audio/warnings.xc | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 2b0f65b2..ff725aeb 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -3,6 +3,7 @@ sc_usb_audio Change Log
 
 6.19.0
 ------
+    - RESOLVED:  SPDIF_TX_INDEX not defined build warning only emitted when SPDIF_TX defined
 
 6.18.1
 ------
diff --git a/module_usb_audio/warnings.xc b/module_usb_audio/warnings.xc
index 5cbab76f..10b859ac 100644
--- a/module_usb_audio/warnings.xc
+++ b/module_usb_audio/warnings.xc
@@ -19,9 +19,11 @@ Warnings relating to configuration defines located in this XC source file rather
 #warning MAX_FREQ not defined. Using 192000
 #endif
 
+#ifdef SPDIF_TX
 #ifndef SPDIF_TX_INDEX
 #warning SPDIF_TX_INDEX not defined! Using 0
 #endif
+#endif
 
 #ifndef VENDOR_STR
 #warning VENDOR_STR not defined. Using "XMOS"