From b808608bd7afdf1b0a2eb096ff2b5b93781fdbb6 Mon Sep 17 00:00:00 2001 From: Jamie Wellnitz Date: Tue, 28 Feb 2006 22:33:12 -0500 Subject: [PATCH] [PATCH] lpfc 8.1.3: Fix polling mode panic Fix polling mode panic Cause: Race between interrupt driven and polling path in harvesting iocbs from the response ring. Signed-off-by: Jamie Wellnitz Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc_scsi.c | 5 +++++ drivers/scsi/lpfc/lpfc_sli.c | 17 +++++++++++------ 2 files changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 094f18f..f937998 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -467,6 +467,11 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, sdev = cmd->device; cmd->scsi_done(cmd); + if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { + lpfc_release_scsi_buf(phba, lpfc_cmd); + return; + } + if (!result && pnode != NULL && ((jiffies - pnode->last_ramp_up_time) > LPFC_Q_RAMP_UP_INTERVAL * HZ) && diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index d08fd89..764aadb 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -1154,12 +1154,17 @@ lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba, cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring, &rspiocbq); if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) { - spin_unlock_irqrestore( - phba->host->host_lock, iflag); - (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, - &rspiocbq); - spin_lock_irqsave(phba->host->host_lock, - iflag); + if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { + (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, + &rspiocbq); + } else { + spin_unlock_irqrestore( + phba->host->host_lock, iflag); + (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, + &rspiocbq); + spin_lock_irqsave(phba->host->host_lock, + iflag); + } } break; default: -- 2.7.4