| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #pragma once |
| |
| #include <fbl/type_support.h> |
| |
| namespace ddk { |
| namespace internal { |
| |
| DECLARE_HAS_MEMBER_FN_WITH_SIGNATURE(has_set_usb_mode, UmsSetMode, |
| zx_status_t (C::*)(usb_mode_t)); |
| |
| template <typename D> |
| constexpr void CheckUmsProtocolSubclass() { |
| static_assert(internal::has_set_usb_mode<D>::value, |
| "UmsProtocol subclasses must implement " |
| "UmsSetMode(usb_mode_t mode)"); |
| } |
| |
| } // namespace internal |
| } // namespace ddk |
