diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c
index 1634aaa..afbfe33 100644
--- a/arch/score/kernel/signal.c
+++ b/arch/score/kernel/signal.c
@@ -42,7 +42,7 @@
 	struct ucontext rs_uc;
 };
 
-int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
+static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
 {
 	int err = 0;
 	unsigned long reg;
@@ -76,7 +76,7 @@
 	return err;
 }
 
-int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
+static int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
 {
 	int err = 0;
 	u32 reg;
@@ -118,8 +118,8 @@
 /*
  * Determine which stack to use..
  */
-void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
-			size_t frame_size)
+static void __user *get_sigframe(struct k_sigaction *ka,
+			struct pt_regs *regs, size_t frame_size)
 {
 	unsigned long sp;
 
@@ -134,7 +134,8 @@
 	return (void __user*)((sp - frame_size) & ~7);
 }
 
-int score_sigaltstack(struct pt_regs *regs)
+asmlinkage long
+score_sigaltstack(struct pt_regs *regs)
 {
 	const stack_t __user *uss = (const stack_t __user *) regs->regs[4];
 	stack_t __user *uoss = (stack_t __user *) regs->regs[5];
@@ -143,7 +144,8 @@
 	return do_sigaltstack(uss, uoss, usp);
 }
 
-void score_rt_sigreturn(struct pt_regs *regs)
+asmlinkage long
+score_rt_sigreturn(struct pt_regs *regs)
 {
 	struct rt_sigframe __user *frame;
 	sigset_t set;
@@ -183,9 +185,11 @@
 
 badframe:
 	force_sig(SIGSEGV, current);
+
+	return 0;
 }
 
-int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
+static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
 		int signr, sigset_t *set, siginfo_t *info)
 {
 	struct rt_sigframe __user *frame;
@@ -238,7 +242,7 @@
 	return -EFAULT;
 }
 
-int handle_signal(unsigned long sig, siginfo_t *info,
+static int handle_signal(unsigned long sig, siginfo_t *info,
 	struct k_sigaction *ka, sigset_t *oldset, struct pt_regs *regs)
 {
 	int ret;
@@ -278,7 +282,7 @@
 	return ret;
 }
 
-void do_signal(struct pt_regs *regs)
+static void do_signal(struct pt_regs *regs)
 {
 	struct k_sigaction ka;
 	sigset_t *oldset;
diff --git a/arch/score/kernel/sys_score.c b/arch/score/kernel/sys_score.c
index 16ace29..5b3cc4e 100644
--- a/arch/score/kernel/sys_score.c
+++ b/arch/score/kernel/sys_score.c
@@ -34,7 +34,7 @@
 unsigned long shm_align_mask = PAGE_SIZE - 1;
 EXPORT_SYMBOL(shm_align_mask);
 
-asmlinkage unsigned long
+asmlinkage unsigned
 sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
 	  unsigned long flags, unsigned long fd, unsigned long pgoff)
 {
@@ -66,7 +66,8 @@
  * Clone a task - this clones the calling program thread.
  * This is called indirectly via a small wrapper
  */
-int score_clone(struct pt_regs *regs)
+asmlinkage long
+score_clone(struct pt_regs *regs)
 {
 	unsigned long clone_flags;
 	unsigned long newsp;
diff --git a/arch/score/kernel/time.c b/arch/score/kernel/time.c
index cd66ba3..f0a43af 100644
--- a/arch/score/kernel/time.c
+++ b/arch/score/kernel/time.c
@@ -28,7 +28,7 @@
 
 #include <asm/scoreregs.h>
 
-irqreturn_t timer_interrupt(int irq, void *dev_id)
+static irqreturn_t timer_interrupt(int irq, void *dev_id)
 {
 	struct clock_event_device *evdev = dev_id;