[PATCH] eventfd: clean compile when CONFIG_EVENTFD=n

[Randy Dunlap <randy.dunlap@oracle.com>]

From: Randy Dunlap <randy.dunlap@oracle.com>

Fix gcc warning and add parameter checking when CONFIG_EVENTFD=n:

fs/aio.c: In function 'aio_complete':
fs/aio.c:955: warning: statement with no effect

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
---
 include/linux/eventfd.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- linux-2.6.22-rc6.orig/include/linux/eventfd.h
+++ linux-2.6.22-rc6/include/linux/eventfd.h
@@ -19,7 +19,8 @@ int eventfd_signal(struct file *file, in
 #else /* CONFIG_EVENTFD */
 
 #define eventfd_fget(fd) ERR_PTR(-ENOSYS)
-#define eventfd_signal(f, n) 0
+static inline int eventfd_signal(struct file *file, int n)
+{ return 0; }
 
 #endif /* CONFIG_EVENTFD */
 
-
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