[NETPOLL]: wrong return for null netpoll_poll_lock()
When netpoll is not being used, the macro that
defines the removed routing netpoll_poll_lock
defines the return as zero, but the real
routine returns a `void *`
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h
index 5ade54a..ca5a873 100644
--- a/include/linux/netpoll.h
+++ b/include/linux/netpoll.h
@@ -86,7 +86,7 @@
#else
#define netpoll_rx(a) 0
-#define netpoll_poll_lock(a) 0
+#define netpoll_poll_lock(a) NULL
#define netpoll_poll_unlock(a)
#endif