From dfcefb0be1231982784df2152213103ad33c1cfd Mon Sep 17 00:00:00 2001
From: Cong Wang <amwang@redhat.com>
Date: Thu, 1 Aug 2013 11:10:24 +0800
Subject: [PATCH] net: fix a compile error when CONFIG_NET_LL_RX_POLL is not
 set
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When CONFIG_NET_LL_RX_POLL is not set, I got:

net/socket.c: In function ‘sock_poll’:
net/socket.c:1165:4: error: implicit declaration of function ‘sk_busy_loop’ [-Werror=implicit-function-declaration]

Fix this by adding a nop when !CONFIG_NET_LL_RX_POLL.

Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/net/busy_poll.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/net/busy_poll.h b/include/net/busy_poll.h
index a14339c2985f..6cd8848fec68 100644
--- a/include/net/busy_poll.h
+++ b/include/net/busy_poll.h
@@ -181,5 +181,10 @@ static inline bool busy_loop_timeout(unsigned long end_time)
 	return true;
 }
 
+static inline bool sk_busy_loop(struct sock *sk, int nonblock)
+{
+	return false;
+}
+
 #endif /* CONFIG_NET_LL_RX_POLL */
 #endif /* _LINUX_NET_BUSY_POLL_H */
-- 
2.39.2