[DFS] Add lastdata for poll of netsocket
* Date Author Notes
* 2015-02-17 Bernard First version
* 2016-05-07 Bernard Rename dfs_lwip to dfs_net
+ * 2018-03-09 Bernard Fix the last data issue in poll.
*/
#include <rtthread.h>
@@ -104,7 +105,7 @@ static int dfs_net_poll(struct dfs_fd *file, struct rt_pollreq *req)
rt_poll_add(&sock->wait_head, req);
level = rt_hw_interrupt_disable();
- if (sock->rcvevent)
+ if (sock->lastdata || sock->rcvevent)
{
mask |= POLLIN;
}
