diff --git a/arch/m32r/kernel/ptrace.c b/arch/m32r/kernel/ptrace.c
index 5e00e0a41fff..20743754f2b2 100644
--- a/arch/m32r/kernel/ptrace.c
+++ b/arch/m32r/kernel/ptrace.c
@@ -626,6 +626,7 @@ arch_ptrace(struct task_struct *child, long request,
 	    unsigned long addr, unsigned long data)
 {
 	int ret;
+	unsigned long __user *datap = (unsigned long __user *) data;
 
 	switch (request) {
 	/*
@@ -640,8 +641,7 @@ arch_ptrace(struct task_struct *child, long request,
 	 * read the word at location addr in the USER area.
 	 */
 	case PTRACE_PEEKUSR:
-		ret = ptrace_read_user(child, addr,
-				       (unsigned long __user *)data);
+		ret = ptrace_read_user(child, addr, datap);
 		break;
 
 	/*
@@ -662,11 +662,11 @@ arch_ptrace(struct task_struct *child, long request,
 		break;
 
 	case PTRACE_GETREGS:
-		ret = ptrace_getregs(child, (void __user *)data);
+		ret = ptrace_getregs(child, datap);
 		break;
 
 	case PTRACE_SETREGS:
-		ret = ptrace_setregs(child, (void __user *)data);
+		ret = ptrace_setregs(child, datap);
 		break;
 
 	default: