From f2c31eebb5306046c44227b72178e5b9490af7c4 Mon Sep 17 00:00:00 2001
From: armink <armink.ztl@gmail.com>
Date: Wed, 19 Oct 2016 10:49:42 +0800
Subject: [PATCH] [DeviceDrivers]Fix dataqueue's bug when push data is timeout
 the lwm flag isn't reset.

---
 components/drivers/src/dataqueue.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/components/drivers/src/dataqueue.c b/components/drivers/src/dataqueue.c
index 1702d20710..f3247f6d30 100644
--- a/components/drivers/src/dataqueue.c
+++ b/components/drivers/src/dataqueue.c
@@ -119,7 +119,11 @@ rt_err_t rt_data_queue_push(struct rt_data_queue *queue,
         /* thread is waked up */
         result = thread->error;
         level = rt_hw_interrupt_disable();
-        if (result != RT_EOK) goto __exit;
+        if (result != RT_EOK)
+        {
+            queue->waiting_lwm = RT_FALSE;
+            goto __exit;
+        }
     }
 
     queue->queue[queue->put_index & mask].data_ptr  = data_ptr;
-- 
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