From c5249157d7b92ed29cee9df440b4a9928e1a4e4f Mon Sep 17 00:00:00 2001
From: shaojinchun <shaojinchun@rt-thread.com>
Date: Fri, 10 May 2019 10:41:03 +0800
Subject: 增加signal的状态位说明及一处代码修改，以防止编译警告
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---
 src/signal.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/signal.c b/src/signal.c
index 0cab6215af..0c0f990f46 100644
--- a/src/signal.c
+++ b/src/signal.c
@@ -56,7 +56,8 @@ static void _signal_entry(void *parameter)
     {
         struct rt_cpu* pcpu = rt_cpu_self();
 
-        if (--pcpu->current_thread->cpus_lock_nest == 0)
+        pcpu->current_thread->cpus_lock_nest--;
+        if (pcpu->current_thread->cpus_lock_nest == 0)
         {
             pcpu->current_thread->scheduler_lock_nest--;
         }
-- 
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