Update ipc.c

程序的分支逻辑出错。
详见修改。

1 files changed, 5 insertions, 0 deletions

diff --git a/src/ipc.c b/src/ipc.c
index e6955bae37..8e8c4db842 100644
--- a/src/ipc.c
+++ b/src/ipc.c
@@ -1186,6 +1186,11 @@ rt_err_t rt_event_recv(rt_event_t   event,
     {
         /* no waiting */
         thread->error = -RT_ETIMEOUT;
+        
+        /* enable interrupt */
+        rt_hw_interrupt_enable(level);
+        
+        return -RT_ETIMEOUT;
     }
     else
     {