From 94c39caa5016660c13ab09b80f4950b37fca5003 Mon Sep 17 00:00:00 2001
From: Alessio Morale <alessiomorale@gmail.com>
Date: Sun, 7 Sep 2014 16:27:42 +0200
Subject: [PATCH] OP-1275 - Fix PIOS_COM to be used with no
 PIOS_INCLUDE_FREERTOS defined

---
 flight/pios/common/pios_com.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/flight/pios/common/pios_com.c b/flight/pios/common/pios_com.c
index fb6023696..8c9155955 100644
--- a/flight/pios/common/pios_com.c
+++ b/flight/pios/common/pios_com.c
@@ -167,10 +167,11 @@ out_fail:
     return -1;
 }
 
+#if defined(PIOS_INCLUDE_FREERTOS)
 static void PIOS_COM_UnblockRx(struct pios_com_dev *com_dev, bool *need_yield)
 {
-#if defined(PIOS_INCLUDE_FREERTOS)
     static signed portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
+
     xSemaphoreGiveFromISR(com_dev->rx_sem, &xHigherPriorityTaskWoken);
 
     if (xHigherPriorityTaskWoken != pdFALSE) {
@@ -178,15 +179,19 @@ static void PIOS_COM_UnblockRx(struct pios_com_dev *com_dev, bool *need_yield)
     } else {
         *need_yield = false;
     }
-#else
-    *need_yield = false;
-#endif
 }
+#else
+static void PIOS_COM_UnblockRx(__attribute__((unused)) struct pios_com_dev *com_dev, bool *need_yield)
+{
+    *need_yield = false;
+}
+#endif
 
+#if defined(PIOS_INCLUDE_FREERTOS)
 static void PIOS_COM_UnblockTx(struct pios_com_dev *com_dev, bool *need_yield)
 {
-#if defined(PIOS_INCLUDE_FREERTOS)
     static signed portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
+
     xSemaphoreGiveFromISR(com_dev->tx_sem, &xHigherPriorityTaskWoken);
 
     if (xHigherPriorityTaskWoken != pdFALSE) {
@@ -194,10 +199,14 @@ static void PIOS_COM_UnblockTx(struct pios_com_dev *com_dev, bool *need_yield)
     } else {
         *need_yield = false;
     }
-#else
-    *need_yield = false;
-#endif
 }
+#else
+static void PIOS_COM_UnblockTx(__attribute__((unused)) struct pios_com_dev *com_dev, bool *need_yield)
+{
+    *need_yield = false;
+}
+#endif
+
 
 static uint16_t PIOS_COM_RxInCallback(uint32_t context, uint8_t *buf, uint16_t buf_len, uint16_t *headroom, bool *need_yield)
 {