Confused.
> +static int scan_thread(ctlr_info_t *h)
> +{
> + int rc;
> + DECLARE_COMPLETION_ONSTACK(wait);
> + h->rescan_wait = &wait;
> +
> + while (!kthread_should_stop()) {
> + rc = wait_for_completion_interruptible(&wait);
> + if (!rc)
> + continue;
> + else
> + rebuild_lun_table(h, 0);
> + }
> + return 0;
> +}
afacit this thread won't ever do anything,
> +static int check_for_unit_attention(ctlr_info_t *h, CommandList_struct *c)
> +{
> + if (c->err_info->SenseInfo[2] != UNIT_ATTENTION)
> + return 0;
> +
> + switch (c->err_info->SenseInfo[12]) {
> + case STATE_CHANGED:
> + printk(KERN_WARNING "cciss%d: a state change "
> + "detected, command retried\n", h->ctlr);
> + return 1;
> + break;
> + case LUN_FAILED:
> + printk(KERN_WARNING "cciss%d: LUN failure "
> + "detected, action required\n", h->ctlr);
> + return 1;
> + break;
> + case REPORT_LUNS_CHANGED:
> + printk(KERN_WARNING "cciss%d: report LUN data "
> + "changed\n", h->ctlr);
> + if (h->rescan_wait)
> + complete(h->rescan_wait);
because this will cause the wait_for_completion_interruptible() to return 0.
> + return 1;
> + break;
> + case POWER_OR_RESET:
> + printk(KERN_WARNING "cciss%d: a power on "
> + "or device reset detected\n", h->ctlr);
> + return 1;
> + break;
> + case UNIT_ATTENTION_CLEARED:
> + printk(KERN_WARNING "cciss%d: unit attention "
> + "cleared by another initiator\n", h->ctlr);
> + return 1;
> + break;
> + default:
> + printk(KERN_WARNING "cciss%d: unknown "
> + "unit attention detected\n", h->ctlr);
> + return 1;
> + }
> +}
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