From 285a175d79067bc8ac09583169f8d6befd69fe14 Mon Sep 17 00:00:00 2001
From: Olivier Matz <zer0@droids-corp.org>
Date: Tue, 6 Aug 2013 21:57:03 +0200
Subject: [PATCH] uart: fix return value of send functions

the return value is 0 on success
---
 modules/comm/uart/uart_send.c         | 2 +-
 modules/comm/uart/uart_send9.c        | 2 +-
 modules/comm/uart/uart_send9_nowait.c | 6 +++---
 modules/comm/uart/uart_send_nowait.c  | 4 ++--
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/modules/comm/uart/uart_send.c b/modules/comm/uart/uart_send.c
index 26bb2a3..e2faed1 100644
--- a/modules/comm/uart/uart_send.c
+++ b/modules/comm/uart/uart_send.c
@@ -44,5 +44,5 @@ int uart_send(uint8_t num, char c)
 			while(uart_send_nowait(num, c) == -1);
 		}
 	}
-	return c;
+	return 0;
 }
diff --git a/modules/comm/uart/uart_send9.c b/modules/comm/uart/uart_send9.c
index ba5b898..7967b12 100644
--- a/modules/comm/uart/uart_send9.c
+++ b/modules/comm/uart/uart_send9.c
@@ -44,5 +44,5 @@ int uart_send_9bits(uint8_t num, int c)
 			while(uart_send_9bits_nowait(num, c) == -1);
 		}
 	}
-	return c;
+	return 0;
 }
diff --git a/modules/comm/uart/uart_send9_nowait.c b/modules/comm/uart/uart_send9_nowait.c
index d22ef7b..86bed9c 100644
--- a/modules/comm/uart/uart_send9_nowait.c
+++ b/modules/comm/uart/uart_send9_nowait.c
@@ -25,7 +25,7 @@
 #include <uart_defs.h>
 #include <uart_private.h>
 
-int uart_send_9bits_nowait(int c)
+int uart_send_9bits_nowait(uint8_t num, int c)
 {
 	uint8_t flags;
 	IRQ_LOCK(flags);
@@ -36,7 +36,7 @@ int uart_send_9bits_nowait(int c)
 		if (*uart_regs[num].ucsra & (1<<UDRE)) {
 			uart_set_udr_9bits(c);
 			IRQ_UNLOCK(flags);
-			return c;
+			return 0;
 		}
 		else {
 			IRQ_UNLOCK(flags);
@@ -61,5 +61,5 @@ int uart_send_9bits_nowait(int c)
 	}
 
 	IRQ_UNLOCK(flags);
-	return (int)c;
+	return 0;
 }
diff --git a/modules/comm/uart/uart_send_nowait.c b/modules/comm/uart/uart_send_nowait.c
index 6a0a008..0aad843 100644
--- a/modules/comm/uart/uart_send_nowait.c
+++ b/modules/comm/uart/uart_send_nowait.c
@@ -41,7 +41,7 @@ int uart_send_nowait(uint8_t num, char c)
 		if (*uart_regs[num].ucsra & (1<<UDRE)) {
 			uart_set_udr(num, c);
 			IRQ_UNLOCK(flags);
-			return (int)c;
+			return 0;
 		}
 		else {
 			IRQ_UNLOCK(flags);
@@ -65,5 +65,5 @@ int uart_send_nowait(uint8_t num, char c)
 	}
 
 	IRQ_UNLOCK(flags);
-	return (int)c;
+	return 0;
 }
-- 
2.20.1