[PATCH] POLLRDHUP/EPOLLRDHUP handling for half-closed devices notifications

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / core / datagram.c

diff --git a/net/core/datagram.c b/net/core/datagram.c
index b8ce6bf81188943a1ac91f3b80b361d03ce3c955..aecddcc304012d48769e9f98b91157aa946cd60d 100644 (file)
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -500,6 +500,8 @@ unsigned int datagram_poll(struct file *file, struct socket *sock,
        /* exceptional events? */
        if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
                mask |= POLLERR;
+       if (sk->sk_shutdown & RCV_SHUTDOWN)
+               mask |= POLLRDHUP;
        if (sk->sk_shutdown == SHUTDOWN_MASK)
                mask |= POLLHUP;