From c802d5276bb2512dde18db5f8a1946b22558598d Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Sun, 28 Dec 2014 16:55:47 -0600
Subject: [PATCH] Tiva SSI: Fix some recent breakage to the Tiva SSI driver for
 the case where only one SSI modules is enabled

---
 arch/arm/src/tiva/tiva_ssi.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/src/tiva/tiva_ssi.c b/arch/arm/src/tiva/tiva_ssi.c
index df023982208..8cd858290d0 100644
--- a/arch/arm/src/tiva/tiva_ssi.c
+++ b/arch/arm/src/tiva/tiva_ssi.c
@@ -137,6 +137,26 @@
 
 #if NSSI_ENABLED > 0
 
+/* Some special definitions if there is exactly one interface enabled */
+
+#if NSSI_ENABLED < 2
+#  if defined(CONFIG_TIVA_SSI0)
+#    define SSI_BASE TIVA_SSI0_BASE
+#    define SSI_IRQ  TIVA_IRQ_SSI0
+#  elif defined(CONFIG_TIVA_SSI0)
+#    define SSI_BASE TIVA_SSI1_BASE
+#    define SSI_IRQ  TIVA_IRQ_SSI1
+#  elif defined(CONFIG_TIVA_SSI0)
+#    define SSI_BASE TIVA_SSI2_BASE
+#    define SSI_IRQ  TIVA_IRQ_SSI2
+#  elif defined(CONFIG_TIVA_SSI0)
+#    define SSI_BASE TIVA_SSI3_BASE
+#    define SSI_IRQ  TIVA_IRQ_SSI3
+#  else
+#    error Help me... I am confused
+#  endif
+#endif
+
 /* The number of (16-bit) words that will fit in the Tx FIFO */
 
 #define TIVA_TXFIFO_WORDS 8