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From:   Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To:     linux-kernel@vger.kernel.org
Cc:     Luc Van Oostenryck <luc.vanoostenryck@gmail.com>,
        =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= <bjorn.topel@intel.com>,
        Magnus Karlsson <magnus.karlsson@intel.com>,
        Jonathan Lemon <jonathan.lemon@gmail.com>,
        netdev@vger.kernel.org
Subject: [PATCH] xsk: fix xsk_poll()'s return type
Date:   Wed, 20 Nov 2019 01:10:42 +0100
Message-Id: <20191120001042.30830-1-luc.vanoostenryck@gmail.com>
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Sender: linux-kernel-owner@vger.kernel.org
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xsk_poll() is defined as returning 'unsigned int' but the
.poll method is declared as returning '__poll_t', a bitwise type.

Fix this by using the proper return type and using the EPOLL
constants instead of the POLL ones, as required for __poll_t.

CC: Björn Töpel <bjorn.topel@intel.com>
CC: Magnus Karlsson <magnus.karlsson@intel.com>
CC: Jonathan Lemon <jonathan.lemon@gmail.com>
CC: netdev@vger.kernel.org
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
 net/xdp/xsk.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index 9044073fbf22..7b59f36eec0d 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -418,10 +418,10 @@ static int xsk_sendmsg(struct socket *sock, struct msghdr *m, size_t total_len)
 	return __xsk_sendmsg(sk);
 }
 
-static unsigned int xsk_poll(struct file *file, struct socket *sock,
+static __poll_t xsk_poll(struct file *file, struct socket *sock,
 			     struct poll_table_struct *wait)
 {
-	unsigned int mask = datagram_poll(file, sock, wait);
+	__poll_t mask = datagram_poll(file, sock, wait);
 	struct sock *sk = sock->sk;
 	struct xdp_sock *xs = xdp_sk(sk);
 	struct net_device *dev;
@@ -443,9 +443,9 @@ static unsigned int xsk_poll(struct file *file, struct socket *sock,
 	}
 
 	if (xs->rx && !xskq_empty_desc(xs->rx))
-		mask |= POLLIN | POLLRDNORM;
+		mask |= EPOLLIN | EPOLLRDNORM;
 	if (xs->tx && !xskq_full_desc(xs->tx))
-		mask |= POLLOUT | POLLWRNORM;
+		mask |= EPOLLOUT | EPOLLWRNORM;
 
 	return mask;
 }
-- 
2.24.0