diff --git a/[refs] b/[refs]
index e256553a11f0..be63068c36ed 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 418aade459f03318defd18ef0b11981a63bd81b0
+refs/heads/master: 21b4da78c941f292f6daf87abb562d6285216e51
diff --git a/trunk/arch/s390/kernel/compat_signal.c b/trunk/arch/s390/kernel/compat_signal.c
index ef706694a0c1..5291b5f8788d 100644
--- a/trunk/arch/s390/kernel/compat_signal.c
+++ b/trunk/arch/s390/kernel/compat_signal.c
@@ -195,9 +195,6 @@ sys32_sigaction(int sig, const struct old_sigaction32 __user *act,
 	return ret;
 }
 
-int
-do_sigaction(int sig, const struct k_sigaction *act, struct k_sigaction *oact);
-
 asmlinkage long
 sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
 	   struct sigaction32 __user *oact,  size_t sigsetsize)