up(shost->eh_wait);
wake_up_process(shost->ehandler);
void scsi_eh_wakeup(struct Scsi_Host *shost){	if (shost->host_busy == shost->host_failed) {		up(shost->eh_wait);		SCSI_LOG_ERROR_RECOVERY(5,				printk("Waking error handler thread\n"));	}}