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[PATCH] lpfc 8.1.3: Fix polling mode panic

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Fix polling mode panic

Cause: Race between interrupt driven and polling path in harvesting iocbs
from
the response ring.

Signed-off-by: Jamie Wellnitz <Jamie.Wellnitz@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Jamie Wellnitz 2006-02-28 22:33:12 -05:00 committed by James Bottomley
parent 66a9ed6600
commit b808608bd7
2 changed files with 16 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -467,6 +467,11 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn,
sdev = cmd->device; sdev = cmd->device;
cmd->scsi_done(cmd); cmd->scsi_done(cmd);
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
lpfc_release_scsi_buf(phba, lpfc_cmd);
return;
}
if (!result && pnode != NULL && if (!result && pnode != NULL &&
((jiffies - pnode->last_ramp_up_time) > ((jiffies - pnode->last_ramp_up_time) >
LPFC_Q_RAMP_UP_INTERVAL * HZ) && LPFC_Q_RAMP_UP_INTERVAL * HZ) &&

17
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -1154,12 +1154,17 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring, cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
&rspiocbq); &rspiocbq);
if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) { if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
spin_unlock_irqrestore( if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
phba->host->host_lock, iflag); (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
(cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &rspiocbq);
&rspiocbq); } else {
spin_lock_irqsave(phba->host->host_lock, spin_unlock_irqrestore(
iflag); phba->host->host_lock, iflag);
(cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
&rspiocbq);
spin_lock_irqsave(phba->host->host_lock,
iflag);
}
} }
break; break;
default: default: