COMPLETION_CODE_SIZE
info->out_buffer = kzalloc(COMPLETION_CODE_SIZE, req->may_sleep ? GFP_KERNEL : GFP_ATOMIC);
COMPLETION_CODE_SIZE,
COMPLETION_CODE_SIZE);
COMPLETION_CODE_SIZE, DMA_BIDIRECTIONAL);
total_mem_len = align_dlen + info_len + rlen + COMPLETION_CODE_SIZE;