4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Aaron Conole <acon...@bytheb.org>

[ Upstream commit 4613012db1d911f80897f9446a49de817b2c4c47 ]

As suggested by Eric Dumazet this change replaces the
#define with a static inline function to enjoy
complaints by the compiler when misusing the API.

Signed-off-by: Aaron Conole <acon...@bytheb.org>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 include/net/af_unix.h |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -64,7 +64,11 @@ struct unix_sock {
 #define UNIX_GC_MAYBE_CYCLE    1
        struct socket_wq        peer_wq;
 };
-#define unix_sk(__sk) ((struct unix_sock *)__sk)
+
+static inline struct unix_sock *unix_sk(struct sock *sk)
+{
+       return (struct unix_sock *)sk;
+}
 
 #define peer_wait peer_wq.wait
 


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