2 files changed, 16 insertions, 4 deletions

diff --git a/arch/m68k/include/asm/ptrace.h b/arch/m68k/include/asm/ptrace.h
index 117adb1e4806..a6ab663bcc2e 100644
--- a/arch/m68k/include/asm/ptrace.h
+++ b/arch/m68k/include/asm/ptrace.h
@@ -90,11 +90,11 @@ extern void show_regs(struct pt_regs *);
  */
 struct task_struct;
 
-#ifdef CONFIG_MMU
 #define arch_has_single_step()  (1)
 extern void user_enable_single_step(struct task_struct *);
 extern void user_disable_single_step(struct task_struct *);
 
+#ifdef CONFIG_MMU
 #define arch_has_block_step()   (1)
 extern void user_enable_block_step(struct task_struct *);
 #endif
diff --git a/arch/m68knommu/kernel/ptrace.c b/arch/m68knommu/kernel/ptrace.c
index ef70ca070ce2..4d3828959fb0 100644
--- a/arch/m68knommu/kernel/ptrace.c
+++ b/arch/m68knommu/kernel/ptrace.c
@@ -86,6 +86,20 @@ static inline int put_reg(struct task_struct *task, int regno,
         return 0;
 }
 
+void user_enable_single_step(struct task_struct *task)
+{
+        unsigned long srflags;
+        srflags = get_reg(task, PT_SR) | (TRACE_BITS << 16);
+        put_reg(task, PT_SR, srflags);
+}
+
+void user_disable_single_step(struct task_struct *task)
+{
+        unsigned long srflags;
+        srflags = get_reg(task, PT_SR) & ~(TRACE_BITS << 16);
+        put_reg(task, PT_SR, srflags);
+}
+
 /*
  * Called by kernel/ptrace.c when detaching..
  *
@@ -93,10 +107,8 @@ static inline int put_reg(struct task_struct *task, int regno,
  */
 void ptrace_disable(struct task_struct *child)
 {
-        unsigned long tmp;
         /* make sure the single step bit is not set. */
-        tmp = get_reg(child, PT_SR) & ~(TRACE_BITS << 16);
-        put_reg(child, PT_SR, tmp);
+        user_disable_single_step(child);
 }
 
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)