From 232019e8d1569e18cfd564100febe2cb3a23bc0a Mon Sep 17 00:00:00 2001
From: chenyong <1521761801@qq.com>
Date: Thu, 25 Jul 2019 11:20:40 +0800
Subject: [PATCH] [net][sal] Fix not clean event issue after poll get the error
 event in lwIP.

Signed-off-by: chenyong <1521761801@qq.com>
---
 components/net/sal_socket/impl/af_inet_lwip.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/net/sal_socket/impl/af_inet_lwip.c b/components/net/sal_socket/impl/af_inet_lwip.c
index e53aa845cc..56df735ab9 100644
--- a/components/net/sal_socket/impl/af_inet_lwip.c
+++ b/components/net/sal_socket/impl/af_inet_lwip.c
@@ -273,6 +273,8 @@ static int inet_poll(struct dfs_fd *file, struct rt_pollreq *req)
         if (sock->errevent)
         {
             mask |= POLLERR;
+            /* clean error event */
+            sock->errevent = 0;
         }
         rt_hw_interrupt_enable(level);
     }