read_channel_reply
res = aux_engine->funcs->read_channel_reply(aux_engine, size,
bytes_replied = read_channel_reply(engine, reply->length, reply->data,
.read_channel_reply = read_channel_reply,
int (*read_channel_reply)(
bytes_replied = read_channel_reply(engine, reply->length, reply->data,
.read_channel_reply = read_channel_reply,
int (*read_channel_reply)(