Merge pull request #1 from RT-Thread/master

sync rtt

1 files changed, 3 insertions, 2 deletions

diff --git a/components/drivers/src/ringbuffer.c b/components/drivers/src/ringbuffer.c
index 2e078ae053..c6a491a7cc 100644
--- a/components/drivers/src/ringbuffer.c
+++ b/components/drivers/src/ringbuffer.c
@@ -332,14 +332,15 @@ struct rt_ringbuffer* rt_ringbuffer_create(rt_uint16_t size)
 
     size = RT_ALIGN_DOWN(size, RT_ALIGN_SIZE);
 
-    rb = rt_malloc(sizeof(struct rt_ringbuffer));
+    rb = (struct rt_ringbuffer *)rt_malloc(sizeof(struct rt_ringbuffer));
     if (rb == RT_NULL)
         goto exit;
 
-    pool = rt_malloc(size);
+    pool = (rt_uint8_t *)rt_malloc(size);
     if (pool == RT_NULL)
     {
         rt_free(rb);
+        rb = RT_NULL;
         goto exit;
     }
     rt_ringbuffer_init(rb, pool, size);