From 3bfe93e36597553c2a781aa4a65e348df8d53bfa Mon Sep 17 00:00:00 2001
From: "bernard.xiong" <bernard.xiong@gmail.com>
Date: Thu, 10 Sep 2009 12:29:15 +0000
Subject: [PATCH] fix mutex release bug

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@45 bbd45198-f89e-11dd-88c7-29a3b14d5316
---
 src/ipc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/ipc.c b/src/ipc.c
index 26e39692b..8b54cabbd 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -764,6 +764,9 @@ rt_err_t rt_mutex_release(rt_mutex_t mutex)
 				&(mutex->owner->init_priority));
 		}
 
+		/* increase value */
+		mutex->value ++;
+
 		/* wakeup suspended thread */
 		if (mutex->value <= 0 && mutex->parent.suspend_thread_count > 0)
 		{
@@ -783,8 +786,9 @@ rt_err_t rt_mutex_release(rt_mutex_t mutex)
 		}
 		else
 		{
-			/* increase value */
-			mutex->value ++;
+			/* clear owner */
+			mutex->owner = RT_NULL;
+			mutex->original_priority = 0;
 		}
 
 		/* enable interrupt */
-- 
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