diff -urN a/src/wl/sys/wl_iw.h b/src/wl/sys/wl_iw.h

--- a/src/wl/sys/wl_iw.h    2013-08-01 09:52:22.000000000 +0300

+++ b/src/wl/sys/wl_iw.h    2013-09-27 09:36:07.808067913 +0300

@@ -21,6 +21,7 @@

 #ifndef _wl_iw_h_

 #define _wl_iw_h_

+#include <linux/semaphore.h>

 #include <linux/wireless.h>

 #include <typedefs.h>

​