From 5b31545970ab395fcada828a71f7b67e5c39e9a3 Mon Sep 17 00:00:00 2001
From: tangyuxin <462747508@qq.com>
Date: Sun, 25 Mar 2018 07:54:25 +0800
Subject: [PATCH] [drivers]Fix put_force bug

---
 components/drivers/src/ringbuffer.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/components/drivers/src/ringbuffer.c b/components/drivers/src/ringbuffer.c
index baeeea0e50..48bf590f8c 100644
--- a/components/drivers/src/ringbuffer.c
+++ b/components/drivers/src/ringbuffer.c
@@ -119,8 +119,11 @@ rt_size_t rt_ringbuffer_put_force(struct rt_ringbuffer *rb,
 
     space_length = rt_ringbuffer_space_len(rb);
 
-    if (length > space_length)
+    if (length > rb->buffer_size)
+    {
+        ptr = &ptr[length - rb->buffer_size];
         length = rb->buffer_size;
+    }
 
     if (rb->buffer_size - rb->write_index > length)
     {
-- 
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