+#ifdef CONFIG_COMPAT
+static int compat_put_ushort(unsigned long arg, unsigned short val)
+{
+	return put_user(val, (unsigned short __user *)compat_ptr(arg));
+}
+
+static int compat_put_int(unsigned long arg, int val)
+{
+	return put_user(val, (compat_int_t __user *)compat_ptr(arg));
+}
+
+static int compat_put_uint(unsigned long arg, unsigned int val)
+{
+	return put_user(val, (compat_uint_t __user *)compat_ptr(arg));
+}
+
+static int compat_put_long(unsigned long arg, long val)
+{
+	return put_user(val, (compat_long_t __user *)compat_ptr(arg));
+}
+
+static int compat_put_ulong(unsigned long arg, compat_ulong_t val)
+{
+	return put_user(val, (compat_ulong_t __user *)compat_ptr(arg));
+}
+
+static int compat_put_u64(unsigned long arg, u64 val)
+{
+	return put_user(val, (compat_u64 __user *)compat_ptr(arg));
+}
+#endif

Can we lift these helpers to compat.h instead?