void btd_adapter_unregister_msd_cb(struct btd_adapter *adapter,
							btd_msd_cb_t cb)
{
	adapter->msd_callbacks = g_slist_remove(adapter->msd_callbacks, cb);
}
void btd_adapter_unregister_msd_cb(struct btd_adapter *adapter,
							btd_msd_cb_t cb)
{
	adapter->msd_callbacks = g_slist_remove(adapter->msd_callbacks, cb);
}