diff --git a/arch/sh/kernel/cpu/clock.c b/arch/sh/kernel/cpu/clock.c
index f5eb56e..b7e46d5 100644
--- a/arch/sh/kernel/cpu/clock.c
+++ b/arch/sh/kernel/cpu/clock.c
@@ -294,9 +294,10 @@
 {
 }
 
-void __init __attribute__ ((weak))
+int __init __attribute__ ((weak))
 arch_clk_init(void)
 {
+	return 0;
 }
 
 static int show_clocks(char *buf, char **start, off_t off,
@@ -331,7 +332,7 @@
 		ret |= clk_register(clk);
 	}
 
-	arch_clk_init();
+	ret |= arch_clk_init();
 
 	/* Kick the child clocks.. */
 	propagate_rate(&master_clk);
diff --git a/arch/sh/kernel/io_generic.c b/arch/sh/kernel/io_generic.c
index db76944..f1b214d 100644
--- a/arch/sh/kernel/io_generic.c
+++ b/arch/sh/kernel/io_generic.c
@@ -81,7 +81,7 @@
 	volatile u8 *port_addr;
 	u8 *buf = dst;
 
-	port_addr = (volatile u8 *)__ioport_map(port, 1);
+	port_addr = (volatile u8 __force *)__ioport_map(port, 1);
 	while (count--)
 		*buf++ = *port_addr;
 }
@@ -91,7 +91,7 @@
 	volatile u16 *port_addr;
 	u16 *buf = dst;
 
-	port_addr = (volatile u16 *)__ioport_map(port, 2);
+	port_addr = (volatile u16 __force *)__ioport_map(port, 2);
 	while (count--)
 		*buf++ = *port_addr;
 
@@ -103,7 +103,7 @@
 	volatile u32 *port_addr;
 	u32 *buf = dst;
 
-	port_addr = (volatile u32 *)__ioport_map(port, 4);
+	port_addr = (volatile u32 __force *)__ioport_map(port, 4);
 	while (count--)
 		*buf++ = *port_addr;
 
diff --git a/arch/sh/kernel/machvec.c b/arch/sh/kernel/machvec.c
index 129b2cf..8bfdd27 100644
--- a/arch/sh/kernel/machvec.c
+++ b/arch/sh/kernel/machvec.c
@@ -14,6 +14,7 @@
 #include <linux/string.h>
 #include <asm/machvec.h>
 #include <asm/sections.h>
+#include <asm/setup.h>
 #include <asm/io.h>
 #include <asm/irq.h>
 
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index 7326313..914e543 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -26,6 +26,7 @@
 #include <asm/system.h>
 #include <asm/ubc.h>
 #include <asm/fpu.h>
+#include <asm/syscalls.h>
 
 static int hlt_counter;
 int ubc_usercnt = 0;
diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c
index b9dbd2d..d0dddc4 100644
--- a/arch/sh/kernel/process_64.c
+++ b/arch/sh/kernel/process_64.c
@@ -25,6 +25,7 @@
 #include <linux/module.h>
 #include <linux/proc_fs.h>
 #include <linux/io.h>
+#include <asm/syscalls.h>
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index 035cb30..84bf342 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -27,6 +27,7 @@
 #include <asm/system.h>
 #include <asm/processor.h>
 #include <asm/mmu_context.h>
+#include <asm/syscalls.h>
 
 /*
  * does not yet catch signals sent when the child dies.
@@ -105,6 +106,7 @@
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
 	struct user * dummy = NULL;
+	unsigned long __user *datap = (unsigned long __user *)data;
 	int ret;
 
 	switch (request) {
@@ -133,7 +135,7 @@
 			tmp = !!tsk_used_math(child);
 		else
 			tmp = 0;
-		ret = put_user(tmp, (unsigned long __user *)data);
+		ret = put_user(tmp, datap);
 		break;
 	}
 
@@ -202,7 +204,7 @@
 		}
 
 		ret = 0;
-		if (put_user(tmp, (unsigned long *) data)) {
+		if (put_user(tmp, datap)) {
 			ret = -EFAULT;
 			break;
 		}
diff --git a/arch/sh/kernel/ptrace_64.c b/arch/sh/kernel/ptrace_64.c
index 9c64248..e15b099 100644
--- a/arch/sh/kernel/ptrace_64.c
+++ b/arch/sh/kernel/ptrace_64.c
@@ -35,6 +35,7 @@
 #include <asm/system.h>
 #include <asm/processor.h>
 #include <asm/mmu_context.h>
+#include <asm/syscalls.h>
 #include <asm/fpu.h>
 
 /* This mask defines the bits of the SR which the user is not allowed to
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c
index de83205..6d0899e 100644
--- a/arch/sh/kernel/setup.c
+++ b/arch/sh/kernel/setup.c
@@ -26,6 +26,7 @@
 #include <linux/err.h>
 #include <linux/debugfs.h>
 #include <linux/crash_dump.h>
+#include <linux/mmzone.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/page.h>
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index 51689d2..345de2f 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -30,6 +30,7 @@
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/cacheflush.h>
+#include <asm/syscalls.h>
 #include <asm/fpu.h>
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
@@ -247,7 +248,6 @@
 	struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
 	struct rt_sigframe __user *frame = (struct rt_sigframe __user *)regs->regs[15];
 	sigset_t set;
-	stack_t st;
 	int r0;
 
 	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
@@ -265,11 +265,9 @@
 	if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
 		goto badframe;
 
-	if (__copy_from_user(&st, &frame->uc.uc_stack, sizeof(st)))
+	if (do_sigaltstack(&frame->uc.uc_stack, NULL,
+			   regs->regs[15]) == -EFAULT)
 		goto badframe;
-	/* It is more difficult to avoid calling this function than to
-	   call it and ignore errors.  */
-	do_sigaltstack((const stack_t __user *)&st, NULL, (unsigned long)frame);
 
 	return r0;
 
@@ -429,7 +427,7 @@
 
 	/* Create the ucontext.  */
 	err |= __put_user(0, &frame->uc.uc_flags);
-	err |= __put_user(0, &frame->uc.uc_link);
+	err |= __put_user(NULL, &frame->uc.uc_link);
 	err |= __put_user((void *)current->sas_ss_sp,
 			  &frame->uc.uc_stack.ss_sp);
 	err |= __put_user(sas_ss_flags(regs->regs[15]),
diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c
index 9061b86..0dfb889 100644
--- a/arch/sh/kernel/sys_sh.c
+++ b/arch/sh/kernel/sys_sh.c
@@ -23,6 +23,7 @@
 #include <linux/fs.h>
 #include <linux/ipc.h>
 #include <asm/cacheflush.h>
+#include <asm/syscalls.h>
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
 
@@ -186,7 +187,7 @@
 			union semun fourth;
 			if (!ptr)
 				return -EINVAL;
-			if (get_user(fourth.__pad, (void * __user *) ptr))
+			if (get_user(fourth.__pad, (void __user * __user *) ptr))
 				return -EFAULT;
 			return sys_semctl (first, second, third, fourth);
 			}
@@ -261,13 +262,13 @@
 	return -EINVAL;
 }
 
-asmlinkage int sys_uname(struct old_utsname * name)
+asmlinkage int sys_uname(struct old_utsname __user *name)
 {
 	int err;
 	if (!name)
 		return -EFAULT;
 	down_read(&uts_sem);
-	err = copy_to_user(name, utsname(), sizeof (*name));
+	err = copy_to_user(name, utsname(), sizeof(*name));
 	up_read(&uts_sem);
 	return err?-EFAULT:0;
 }
diff --git a/arch/sh/kernel/sys_sh32.c b/arch/sh/kernel/sys_sh32.c
index f0aa5c3..dbba1e1 100644
--- a/arch/sh/kernel/sys_sh32.c
+++ b/arch/sh/kernel/sys_sh32.c
@@ -16,6 +16,7 @@
 #include <asm/cacheflush.h>
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
+#include <asm/syscalls.h>
 
 /*
  * sys_pipe() is the normal C calling standard for creating
@@ -37,13 +38,13 @@
 	return error;
 }
 
-asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char * buf,
+asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char __user *buf,
 			     size_t count, long dummy, loff_t pos)
 {
 	return sys_pread64(fd, buf, count, pos);
 }
 
-asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char * buf,
+asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char __user *buf,
 			      size_t count, long dummy, loff_t pos)
 {
 	return sys_pwrite64(fd, buf, count, pos);
diff --git a/arch/sh/kernel/time_32.c b/arch/sh/kernel/time_32.c
index e2f74cc..23ca711 100644
--- a/arch/sh/kernel/time_32.c
+++ b/arch/sh/kernel/time_32.c
@@ -16,6 +16,7 @@
 #include <linux/timex.h>
 #include <linux/sched.h>
 #include <linux/clockchips.h>
+#include <linux/mc146818rtc.h>	/* for rtc_lock */
 #include <linux/smp.h>
 #include <asm/clock.h>
 #include <asm/rtc.h>
diff --git a/arch/sh/kernel/timers/timer-cmt.c b/arch/sh/kernel/timers/timer-cmt.c
index d20c8c3..c127293 100644
--- a/arch/sh/kernel/timers/timer-cmt.c
+++ b/arch/sh/kernel/timers/timer-cmt.c
@@ -174,7 +174,7 @@
 	return 0;
 }
 
-struct sys_timer_ops cmt_timer_ops = {
+static struct sys_timer_ops cmt_timer_ops = {
 	.init		= cmt_timer_init,
 	.start		= cmt_timer_start,
 	.stop		= cmt_timer_stop,
diff --git a/arch/sh/kernel/traps_32.c b/arch/sh/kernel/traps_32.c
index 511a942..4901f67 100644
--- a/arch/sh/kernel/traps_32.c
+++ b/arch/sh/kernel/traps_32.c
@@ -192,6 +192,7 @@
 	int ret, index, count;
 	unsigned long *rm, *rn;
 	unsigned char *src, *dst;
+	unsigned char __user *srcu, *dstu;
 
 	index = (instruction>>8)&15;	/* 0x0F00 */
 	rn = &regs->regs[index];
@@ -206,28 +207,28 @@
 	case 0: /* mov.[bwl] to/from memory via r0+rn */
 		if (instruction & 8) {
 			/* from memory */
-			src = (unsigned char*) *rm;
-			src += regs->regs[0];
-			dst = (unsigned char*) rn;
-			*(unsigned long*)dst = 0;
+			srcu = (unsigned char __user *)*rm;
+			srcu += regs->regs[0];
+			dst = (unsigned char *)rn;
+			*(unsigned long *)dst = 0;
 
 #if !defined(__LITTLE_ENDIAN__)
 			dst += 4-count;
 #endif
-			if (ma->from(dst, src, count))
+			if (ma->from(dst, srcu, count))
 				goto fetch_fault;
 
 			sign_extend(count, dst);
 		} else {
 			/* to memory */
-			src = (unsigned char*) rm;
+			src = (unsigned char *)rm;
 #if !defined(__LITTLE_ENDIAN__)
 			src += 4-count;
 #endif
-			dst = (unsigned char*) *rn;
-			dst += regs->regs[0];
+			dstu = (unsigned char __user *)*rn;
+			dstu += regs->regs[0];
 
-			if (ma->to(dst, src, count))
+			if (ma->to(dstu, src, count))
 				goto fetch_fault;
 		}
 		ret = 0;
@@ -235,10 +236,10 @@
 
 	case 1: /* mov.l Rm,@(disp,Rn) */
 		src = (unsigned char*) rm;
-		dst = (unsigned char*) *rn;
-		dst += (instruction&0x000F)<<2;
+		dstu = (unsigned char __user *)*rn;
+		dstu += (instruction&0x000F)<<2;
 
-		if (ma->to(dst, src, 4))
+		if (ma->to(dstu, src, 4))
 			goto fetch_fault;
 		ret = 0;
 		break;
@@ -247,28 +248,28 @@
 		if (instruction & 4)
 			*rn -= count;
 		src = (unsigned char*) rm;
-		dst = (unsigned char*) *rn;
+		dstu = (unsigned char __user *)*rn;
 #if !defined(__LITTLE_ENDIAN__)
 		src += 4-count;
 #endif
-		if (ma->to(dst, src, count))
+		if (ma->to(dstu, src, count))
 			goto fetch_fault;
 		ret = 0;
 		break;
 
 	case 5: /* mov.l @(disp,Rm),Rn */
-		src = (unsigned char*) *rm;
-		src += (instruction&0x000F)<<2;
-		dst = (unsigned char*) rn;
-		*(unsigned long*)dst = 0;
+		srcu = (unsigned char __user *)*rm;
+		srcu += (instruction & 0x000F) << 2;
+		dst = (unsigned char *)rn;
+		*(unsigned long *)dst = 0;
 
-		if (ma->from(dst, src, 4))
+		if (ma->from(dst, srcu, 4))
 			goto fetch_fault;
 		ret = 0;
 		break;
 
 	case 6:	/* mov.[bwl] from memory, possibly with post-increment */
-		src = (unsigned char*) *rm;
+		srcu = (unsigned char __user *)*rm;
 		if (instruction & 4)
 			*rm += count;
 		dst = (unsigned char*) rn;
@@ -277,7 +278,7 @@
 #if !defined(__LITTLE_ENDIAN__)
 		dst += 4-count;
 #endif
-		if (ma->from(dst, src, count))
+		if (ma->from(dst, srcu, count))
 			goto fetch_fault;
 		sign_extend(count, dst);
 		ret = 0;
@@ -286,28 +287,28 @@
 	case 8:
 		switch ((instruction&0xFF00)>>8) {
 		case 0x81: /* mov.w R0,@(disp,Rn) */
-			src = (unsigned char*) &regs->regs[0];
+			src = (unsigned char *) &regs->regs[0];
 #if !defined(__LITTLE_ENDIAN__)
 			src += 2;
 #endif
-			dst = (unsigned char*) *rm; /* called Rn in the spec */
-			dst += (instruction&0x000F)<<1;
+			dstu = (unsigned char __user *)*rm; /* called Rn in the spec */
+			dstu += (instruction & 0x000F) << 1;
 
-			if (ma->to(dst, src, 2))
+			if (ma->to(dstu, src, 2))
 				goto fetch_fault;
 			ret = 0;
 			break;
 
 		case 0x85: /* mov.w @(disp,Rm),R0 */
-			src = (unsigned char*) *rm;
-			src += (instruction&0x000F)<<1;
-			dst = (unsigned char*) &regs->regs[0];
-			*(unsigned long*)dst = 0;
+			srcu = (unsigned char __user *)*rm;
+			srcu += (instruction & 0x000F) << 1;
+			dst = (unsigned char *) &regs->regs[0];
+			*(unsigned long *)dst = 0;
 
 #if !defined(__LITTLE_ENDIAN__)
 			dst += 2;
 #endif
-			if (ma->from(dst, src, 2))
+			if (ma->from(dst, srcu, 2))
 				goto fetch_fault;
 			sign_extend(2, dst);
 			ret = 0;
@@ -333,7 +334,8 @@
 				   struct mem_access *ma)
 {
 	opcode_t instruction;
-	void *addr = (void *)(regs->pc + instruction_size(old_instruction));
+	void __user *addr = (void __user *)(regs->pc +
+		instruction_size(old_instruction));
 
 	if (copy_from_user(&instruction, addr, sizeof(instruction))) {
 		/* the instruction-fetch faulted */
@@ -559,7 +561,7 @@
 		}
 
 		set_fs(USER_DS);
-		if (copy_from_user(&instruction, (void *)(regs->pc),
+		if (copy_from_user(&instruction, (void __user *)(regs->pc),
 				   sizeof(instruction))) {
 			/* Argh. Fault on the instruction itself.
 			   This should never happen non-SMP
@@ -589,7 +591,7 @@
 			die("unaligned program counter", regs, error_code);
 
 		set_fs(KERNEL_DS);
-		if (copy_from_user(&instruction, (void *)(regs->pc),
+		if (copy_from_user(&instruction, (void __user *)(regs->pc),
 				   sizeof(instruction))) {
 			/* Argh. Fault on the instruction itself.
 			   This should never happen non-SMP