On Tue, Mar 10, 2009 at 03:39:33PM -0700, Andrew Morton wrote:
>
> 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,
>
I'm fixing and testing.
> > +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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