diff --git a/[refs] b/[refs]
index 65ad97ea9d75..d19641d186cb 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9666dae51013b064e7d77fc36b5cee98dd167ed5
+refs/heads/master: 12dc2fdd3e6067f5137e4a6d8af0b1a994952f52
diff --git a/trunk/drivers/net/slip.c b/trunk/drivers/net/slip.c
index 16363b5c6f56..404ea4297e32 100644
--- a/trunk/drivers/net/slip.c
+++ b/trunk/drivers/net/slip.c
@@ -74,6 +74,7 @@
 #include <linux/rtnetlink.h>
 #include <linux/if_arp.h>
 #include <linux/if_slip.h>
+#include <linux/delay.h>
 #include <linux/init.h>
 #include "slip.h"
 #ifdef CONFIG_INET