start_host
.start_host = ci_otg_start_host,
.start_host = fsl_otg_start_host,
int (*start_host)(struct otg_fsm *fsm, int on);
if (!fsm->ops->start_host)
return fsm->ops->start_host(fsm, on);
ret = pthread_create(&host, NULL, start_host, host_arg);