Update ethernetif.c

if device->eth_rx is NULL ,rx thread will hard fault...
2016-09-23 17:00:31 +08:00 · 2016-09-23 17:00:31 +08:00 · 8979d70a69
parent 6d14e1390c
commit 8979d70a69
1 changed files with 2 additions and 0 deletions
--- a/components/net/lwip-1.4.1/src/netif/ethernetif.c
+++ b/components/net/lwip-1.4.1/src/netif/ethernetif.c
@ -367,6 +367,8 @@ static void eth_rx_thread_entry(void* parameter)
            /* receive all of buffer */
            while (1)
            {
+            	if(device->eth_rx == RT_NULL) break;
+            	
                p = device->eth_rx(&(device->parent));
                if (p != RT_NULL)
                {