On a validation error, my form has no old input data?

My controller has the following validation code:

$validator = Validator::make(
    $request->all(),
    ['photo' => 'photosize'],
    ['photosize' => 'At least one uploaded file exceeds size limit of 5MB']
);
if ($validator->fails()) {
    return redirect('/admin/note/new')
        ->withErrors($validator)
        ->withInput();
}

And in my blade template for the form two of the inputs contain name="foo" value="{{ old('foo') }}". The form however is blank. What am I missing?