DCP_CHAN_HASH_SHA
sdcp->thread[DCP_CHAN_HASH_SHA] = kthread_run(dcp_chan_thread_sha,
if (IS_ERR(sdcp->thread[DCP_CHAN_HASH_SHA])) {
ret = PTR_ERR(sdcp->thread[DCP_CHAN_HASH_SHA]);
kthread_stop(sdcp->thread[DCP_CHAN_HASH_SHA]);
kthread_stop(sdcp->thread[DCP_CHAN_HASH_SHA]);
const int chan = DCP_CHAN_HASH_SHA;
actx->chan = DCP_CHAN_HASH_SHA;