microblaze: fix copy_from_user()

static inline long copy_from_user(void *to,

		const void __user *from, unsigned long n)

{

	unsigned long res = n;

	might_fault();

	if (access_ok(VERIFY_READ, from, n))

		return __copy_from_user(to, from, n);

	return n;

	if (likely(access_ok(VERIFY_READ, from, n)))

		res = __copy_from_user(to, from, n);

	if (unlikely(res))

		memset(to + (n - res), 0, res);

	return res;

}

#define __copy_to_user(to, from, n)	\