1 files changed, 3 insertions, 2 deletions

diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index e0510496596c..963d82bdec06 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -42,10 +42,11 @@ void ptrace_disable(struct task_struct *child)
 extern int peek_user(struct task_struct * child, long addr, long data);
 extern int poke_user(struct task_struct * child, long addr, long data);
 
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+                 unsigned long addr, unsigned long data)
 {
         int i, ret;
-        unsigned long __user *p = (void __user *)(unsigned long)data;
+        unsigned long __user *p = (void __user *)data;
 
         switch (request) {
         /* read word at location addr. */