diff --git a/[refs] b/[refs]
index 7ffb9497a8cb..cfe6bd109abb 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 63a59fa7a74fccff64dbf7d9230bd9d91bddead4
+refs/heads/master: 4933d07531711e399d8d578036aa9fc1be2f9b20
diff --git a/trunk/drivers/input/serio/hp_sdc.c b/trunk/drivers/input/serio/hp_sdc.c
index 02b3ad8c0826..edfedd9a166c 100644
--- a/trunk/drivers/input/serio/hp_sdc.c
+++ b/trunk/drivers/input/serio/hp_sdc.c
@@ -69,6 +69,7 @@
 #include <linux/time.h>
 #include <linux/slab.h>
 #include <linux/hil.h>
+#include <linux/semaphore.h>
 #include <asm/io.h>
 #include <asm/system.h>